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authorMagnus Auvinen <magnus.auvinen@gmail.com>2007-08-22 07:52:33 +0000
committerMagnus Auvinen <magnus.auvinen@gmail.com>2007-08-22 07:52:33 +0000
commit8b3c16e6152a527f9aec1a88a9eed74119de7000 (patch)
treef0bde5cea15e696e42cade06a3b12ff6b13acc57 /src/wavpack
parent9899666a7ce6679a3b9667ab09f615f4d0769c16 (diff)
downloadzcatch-8b3c16e6152a527f9aec1a88a9eed74119de7000.tar.gz
zcatch-8b3c16e6152a527f9aec1a88a9eed74119de7000.zip
major engine cleanup. dependency on baselib removed. engine is now C code (not ansi tho). some other cruft removed aswell
Diffstat (limited to 'src/wavpack')
-rw-r--r--src/wavpack/arm.S461
-rw-r--r--src/wavpack/arml.S491
-rw-r--r--src/wavpack/bits.c140
-rw-r--r--src/wavpack/coldfire.S525
-rw-r--r--src/wavpack/float.c50
-rw-r--r--src/wavpack/license.txt25
-rw-r--r--src/wavpack/metadata.c105
-rw-r--r--src/wavpack/readme.txt68
-rw-r--r--src/wavpack/unpack.c785
-rw-r--r--src/wavpack/wavpack.h384
-rw-r--r--src/wavpack/words.c560
-rw-r--r--src/wavpack/wputils.c351
-rw-r--r--src/wavpack/wvfilter.c.no_compile200
13 files changed, 0 insertions, 4145 deletions
diff --git a/src/wavpack/arm.S b/src/wavpack/arm.S
deleted file mode 100644
index ab882181..00000000
--- a/src/wavpack/arm.S
+++ /dev/null
@@ -1,461 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-/* This is an assembly optimized version of the following WavPack function:

- *

- * void decorr_stereo_pass_cont (struct decorr_pass *dpp,

- *                               long *buffer, long sample_count);

- *

- * It performs a single pass of stereo decorrelation on the provided buffer.

- * Note that this version of the function requires that the 8 previous stereo

- * samples are visible and correct. In other words, it ignores the "samples_*"

- * fields in the decorr_pass structure and gets the history data directly

- * from the buffer. It does, however, return the appropriate history samples

- * to the decorr_pass structure before returning.

- *

- * This is written to work on a ARM7TDMI processor. This version only uses the

- * 32-bit multiply-accumulate instruction and so will overflow with 24-bit

- * WavPack files.

- */

-        .text

-        .align

-        .global         decorr_stereo_pass_cont_arm

-

-/*

- * on entry:

- *

- * r0 = struct decorr_pass *dpp

- * r1 = long *buffer

- * r2 = long sample_count

- */

-

-decorr_stereo_pass_cont_arm:

-

-        stmfd   sp!, {r4 - r8, r10, r11, lr}

-        mov     r5, r0                  @ r5 = dpp

-        mov     r11, #512               @ r11 = 512 for rounding

-        ldrsh   r6, [r0, #2]            @ r6 = dpp->delta

-        ldrsh   r4, [r0, #4]            @ r4 = dpp->weight_A

-        ldrsh   r0, [r0, #6]            @ r0 = dpp->weight_B

-        cmp     r2, #0                  @ exit if no samples to process

-        beq     common_exit

-

-        add     r7, r1, r2, asl #3      @ r7 = buffer ending position

-        ldrsh   r2, [r5, #0]            @ r2 = dpp->term

-        cmp     r2, #0

-        bmi     minus_term

-

-        ldr     lr, [r1, #-16]          @ load 2 sample history from buffer

-        ldr     r10, [r1, #-12]         @  for terms 2, 17, and 18

-        ldr     r8, [r1, #-8]

-        ldr     r3, [r1, #-4]

-        cmp     r2, #17

-        beq     term_17_loop

-        cmp     r2, #18

-        beq     term_18_loop

-        cmp     r2, #2

-        beq     term_2_loop

-        b       term_default_loop       @ else handle default (1-8, except 2)

-

-minus_term:

-        mov     r10, #1024              @ r10 = -1024 for weight clipping

-        rsb     r10, r10, #0            @  (only used for negative terms)

-        cmn     r2, #1

-        beq     term_minus_1

-        cmn     r2, #2

-        beq     term_minus_2

-        cmn     r2, #3

-        beq     term_minus_3

-        b       common_exit

-

-/*

- ******************************************************************************

- * Loop to handle term = 17 condition

- *

- * r0 = dpp->weight_B           r8 = previous left sample

- * r1 = bptr                    r9 = 

- * r2 = current sample          r10 = second previous left sample

- * r3 = previous right sample   r11 = 512 (for rounding)

- * r4 = dpp->weight_A           ip = current decorrelation value

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = second previous right sample

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_17_loop:

-        rsbs    ip, lr, r8, asl #1      @ decorr value = (2 * prev) - 2nd prev

-        mov     lr, r8                  @ previous becomes 2nd previous

-        ldr     r2, [r1], #4            @ get sample & update pointer

-        mla     r8, ip, r4, r11         @ mult decorr value by weight, round,

-        add     r8, r2, r8, asr #10     @  shift, and add to new sample

-        strne   r8, [r1, #-4]           @ if change possible, store sample back

-        cmpne   r2, #0

-        beq     .L325

-        teq     ip, r2                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-

-.L325:  rsbs    ip, r10, r3, asl #1     @ do same thing for right channel

-        mov     r10, r3

-        ldr     r2, [r1], #4

-        mla     r3, ip, r0, r11

-        add     r3, r2, r3, asr #10

-        strne   r3, [r1, #-4]

-        cmpne   r2, #0

-        beq     .L329

-        teq     ip, r2

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-

-.L329:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_17_loop

-        b       store_1718              @ common exit for terms 17 & 18

-

-/*

- ******************************************************************************

- * Loop to handle term = 18 condition

- *

- * r0 = dpp->weight_B           r8 = previous left sample

- * r1 = bptr                    r9 = 

- * r2 = current sample          r10 = second previous left sample

- * r3 = previous right sample   r11 = 512 (for rounding)

- * r4 = dpp->weight_A           ip = decorrelation value

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = second previous right sample

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_18_loop:

-        sub     ip, r8, lr              @ decorr value =

-        mov     lr, r8                  @  ((3 * prev) - 2nd prev) >> 1

-        adds    ip, r8, ip, asr #1

-        ldr     r2, [r1], #4            @ get sample & update pointer

-        mla     r8, ip, r4, r11         @ mult decorr value by weight, round,

-        add     r8, r2, r8, asr #10     @  shift, and add to new sample

-        strne   r8, [r1, #-4]           @ if change possible, store sample back

-        cmpne   r2, #0

-        beq     .L337

-        teq     ip, r2                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-

-.L337:  sub     ip, r3, r10             @ do same thing for right channel

-        mov     r10, r3

-        adds    ip, r3, ip, asr #1

-        ldr     r2, [r1], #4

-        mla     r3, ip, r0, r11

-        add     r3, r2, r3, asr #10

-        strne   r3, [r1, #-4]

-        cmpne   r2, #0

-        beq     .L341

-        teq     ip, r2

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-

-.L341:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_18_loop

-

-/* common exit for terms 17 & 18 */

-

-store_1718:

-        str     r3, [r5, #40]           @ store sample history into struct

-        str     r8, [r5, #8]

-        str     r10, [r5, #44]

-        str     lr, [r5, #12]

-        b       common_exit             @ and return

-

-/*

- ******************************************************************************

- * Loop to handle term = 2 condition

- * (note that this case can be handled by the default term handler (1-8), but

- * this special case is faster because it doesn't have to read memory twice)

- *

- * r0 = dpp->weight_B           r8 = previous left sample

- * r1 = bptr                    r9 = 

- * r2 = current sample          r10 = second previous left sample

- * r3 = previous right sample   r11 = 512 (for rounding)

- * r4 = dpp->weight_A           ip = decorrelation value

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = second previous right sample

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_2_loop:

-        movs    ip, lr                  @ get decorrelation value & test

-        mov     lr, r8                  @ previous becomes 2nd previous

-        ldr     r2, [r1], #4            @ get sample & update pointer

-        mla     r8, ip, r4, r11         @ mult decorr value by weight, round,

-        add     r8, r2, r8, asr #10     @  shift, and add to new sample

-        strne   r8, [r1, #-4]           @ if change possible, store sample back

-        cmpne   r2, #0

-        beq     .L225

-        teq     ip, r2                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-

-.L225:  movs    ip, r10                 @ do same thing for right channel

-        mov     r10, r3

-        ldr     r2, [r1], #4

-        mla     r3, ip, r0, r11

-        add     r3, r2, r3, asr #10

-        strne   r3, [r1, #-4]

-        cmpne   r2, #0

-        beq     .L229

-        teq     ip, r2

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-

-.L229:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_2_loop

-        b       default_term_exit       @ this exit updates all dpp->samples

-

-/*

- ******************************************************************************

- * Loop to handle default term condition

- *

- * r0 = dpp->weight_B           r8 = result accumulator

- * r1 = bptr                    r9 = 

- * r2 = dpp->term               r10 =

- * r3 = decorrelation value     r11 = 512 (for rounding)

- * r4 = dpp->weight_A           ip = current sample

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr =

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_default_loop:

-        ldr     ip, [r1]                @ get original sample

-        ldr     r3, [r1, -r2, asl #3]   @ get decorrelation value based on term

-        mla     r8, r3, r4, r11         @ mult decorr value by weight, round,

-        add     r8, ip, r8, asr #10     @  shift and add to new sample

-        str     r8, [r1], #4            @ store update sample

-        cmp     r3, #0

-        cmpne   ip, #0

-        beq     .L350

-        teq     ip, r3                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-

-.L350:  ldr     ip, [r1]                @ do the same thing for right channel

-        ldr     r3, [r1, -r2, asl #3]

-        mla     r8, r3, r0, r11

-        add     r8, ip, r8, asr #10

-        str     r8, [r1], #4

-        cmp     r3, #0

-        cmpne   ip, #0

-        beq     .L354

-        teq     ip, r3

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-

-.L354:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_default_loop

-

-/*

- * This exit is used by terms 1-8 to store the previous 8 samples into the decorr

- * structure (even if they are not all used for the given term)

- */

-

-default_term_exit:

-        ldrsh   r3, [r5, #0]

-        sub     ip, r3, #1

-        mov     lr, #7

-

-.L358:  and     r3, ip, #7

-        add     r3, r5, r3, asl #2

-        ldr     r2, [r1, #-4]

-        str     r2, [r3, #40]

-        ldr     r2, [r1, #-8]!

-        str     r2, [r3, #8]

-        sub     ip, ip, #1

-        sub     lr, lr, #1

-        cmn     lr, #1

-        bne     .L358

-        b       common_exit

-

-/*

- ******************************************************************************

- * Loop to handle term = -1 condition

- *

- * r0 = dpp->weight_B           r8 =

- * r1 = bptr                    r9 = 

- * r2 = intermediate result     r10 = -1024 (for clipping)

- * r3 = previous right sample   r11 = 512 (for rounding)

- * r4 = dpp->weight_A           ip = current sample

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = updated left sample

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_minus_1:

-        ldr     r3, [r1, #-4]

-

-term_minus_1_loop:

-        ldr     ip, [r1]                @ for left channel the decorrelation value

-        mla     r2, r3, r4, r11         @  is the previous right sample (in r3)

-        add     lr, ip, r2, asr #10

-        str     lr, [r1], #8

-        cmp     r3, #0

-        cmpne   ip, #0

-        beq     .L361

-        teq     ip, r3                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-        cmp     r4, #1024

-        movgt   r4, #1024

-        cmp     r4, r10

-        movlt   r4, r10

-

-.L361:  ldr     r2, [r1, #-4]           @ for right channel the decorrelation value

-        mla     r3, lr, r0, r11         @  is the just updated right sample (in lr)

-        add     r3, r2, r3, asr #10

-        str     r3, [r1, #-4]

-        cmp     lr, #0

-        cmpne   r2, #0

-        beq     .L369

-        teq     r2, lr

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-        cmp     r0, #1024               @ then clip weight to +/-1024

-        movgt   r0, #1024

-        cmp     r0, r10

-        movlt   r0, r10

-

-.L369:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_minus_1_loop

-

-        str     r3, [r5, #8]            @ else store right sample and exit

-        b       common_exit

-

-/*

- ******************************************************************************

- * Loop to handle term = -2 condition

- * (note that the channels are processed in the reverse order here)

- *

- * r0 = dpp->weight_B           r8 =

- * r1 = bptr                    r9 = 

- * r2 = intermediate result     r10 = -1024 (for clipping)

- * r3 = previous left sample    r11 = 512 (for rounding)

- * r4 = dpp->weight_A           ip = current sample

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = updated right sample

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_minus_2:

-        ldr     r3, [r1, #-8]

-

-term_minus_2_loop:

-        ldr     ip, [r1, #4]            @ for right channel the decorrelation value

-        mla     r2, r3, r0, r11         @  is the previous left sample (in r3)

-        add     lr, ip, r2, asr #10

-        str     lr, [r1, #4]

-        cmp     r3, #0

-        cmpne   ip, #0

-        beq     .L380

-        teq     ip, r3                  @ update weight based on signs

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-        cmp     r0, #1024               @ then clip weight to +/-1024

-        movgt   r0, #1024

-        cmp     r0, r10

-        movlt   r0, r10

-

-.L380:  ldr     r2, [r1, #0]            @ for left channel the decorrelation value

-        mla     r3, lr, r4, r11         @  is the just updated left sample (in lr)

-        add     r3, r2, r3, asr #10

-        str     r3, [r1], #8

-        cmp     lr, #0

-        cmpne   r2, #0

-        beq     .L388

-        teq     r2, lr

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-        cmp     r4, #1024

-        movgt   r4, #1024

-        cmp     r4, r10

-        movlt   r4, r10

-

-.L388:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_minus_2_loop

-

-        str     r3, [r5, #40]           @ else store left channel and exit

-        b       common_exit

-

-/*

- ******************************************************************************

- * Loop to handle term = -3 condition

- *

- * r0 = dpp->weight_B           r8 = previous left sample

- * r1 = bptr                    r9 = 

- * r2 = current left sample     r10 = -1024 (for clipping)

- * r3 = previous right sample   r11 = 512 (for rounding)

- * r4 = dpp->weight_A           ip = intermediate result

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr =

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_minus_3:

-        ldr     r3, [r1, #-4]           @ load previous samples

-        ldr     r8, [r1, #-8]

-

-term_minus_3_loop:

-        ldr     ip, [r1]

-        mla     r2, r3, r4, r11

-        add     r2, ip, r2, asr #10

-        str     r2, [r1], #4

-        cmp     r3, #0

-        cmpne   ip, #0

-        beq     .L399

-        teq     ip, r3                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-        cmp     r4, #1024               @ then clip weight to +/-1024

-        movgt   r4, #1024

-        cmp     r4, r10

-        movlt   r4, r10

-

-.L399:  movs    ip, r8                  @ ip = previous left we use now

-        mov     r8, r2                  @ r8 = current left we use next time

-        ldr     r2, [r1], #4

-        mla     r3, ip, r0, r11

-        add     r3, r2, r3, asr #10

-        strne   r3, [r1, #-4]

-        cmpne   r2, #0

-        beq     .L407

-        teq     ip, r2

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-        cmp     r0, #1024

-        movgt   r0, #1024

-        cmp     r0, r10

-        movlt   r0, r10

-

-.L407:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_minus_3_loop

-

-        str     r3, [r5, #8]            @ else store previous samples & exit

-        str     r8, [r5, #40]

-

-/*

- * Before finally exiting we must store weights back for next time

- */

-

-common_exit:

-        strh    r4, [r5, #4]

-        strh    r0, [r5, #6]

-        ldmfd   sp!, {r4 - r8, r10, r11, pc}

-

diff --git a/src/wavpack/arml.S b/src/wavpack/arml.S
deleted file mode 100644
index 39de5383..00000000
--- a/src/wavpack/arml.S
+++ /dev/null
@@ -1,491 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-/* This is an assembly optimized version of the following WavPack function:

- *

- * void decorr_stereo_pass_cont (struct decorr_pass *dpp,

- *                               long *buffer, long sample_count);

- *

- * It performs a single pass of stereo decorrelation on the provided buffer.

- * Note that this version of the function requires that the 8 previous stereo

- * samples are visible and correct. In other words, it ignores the "samples_*"

- * fields in the decorr_pass structure and gets the history data directly

- * from the buffer. It does, however, return the appropriate history samples

- * to the decorr_pass structure before returning.

- *

- * This is written to work on a ARM7TDMI processor. This version uses the

- * 64-bit multiply-accumulate instruction and so can be used with all

- * WavPack files. However, for optimum performance with 16-bit WavPack

- * files, there is a faster version that only uses the 32-bit MLA

- * instruction.

- */

-

-        .text

-        .align

-        .global         decorr_stereo_pass_cont_arml

-

-/*

- * on entry:

- *

- * r0 = struct decorr_pass *dpp

- * r1 = long *buffer

- * r2 = long sample_count

- */

-

-decorr_stereo_pass_cont_arml:

-

-        stmfd   sp!, {r4 - r8, r10, r11, lr}

-        mov     r5, r0                  @ r5 = dpp

-        mov     r11, #512               @ r11 = 512 for rounding

-        ldrsh   r6, [r0, #2]            @ r6 = dpp->delta

-        ldrsh   r4, [r0, #4]            @ r4 = dpp->weight_A

-        ldrsh   r0, [r0, #6]            @ r0 = dpp->weight_B

-        cmp     r2, #0                  @ exit if no samples to process

-        beq     common_exit

-

-        mov     r0, r0, asl #18         @ for 64-bit math we use weights << 18

-        mov     r4, r4, asl #18

-        mov     r6, r6, asl #18

-        add     r7, r1, r2, asl #3      @ r7 = buffer ending position

-        ldrsh   r2, [r5, #0]            @ r2 = dpp->term

-        cmp     r2, #0

-        blt     minus_term

-

-        ldr     lr, [r1, #-16]          @ load 2 sample history from buffer

-        ldr     r10, [r1, #-12]         @  for terms 2, 17, and 18

-        ldr     r8, [r1, #-8]

-        ldr     r3, [r1, #-4]

-

-        cmp     r2, #18

-        beq     term_18_loop

-        mov     lr, lr, asl #4

-        mov     r10, r10, asl #4

-        cmp     r2, #2

-        beq     term_2_loop

-        cmp     r2, #17

-        beq     term_17_loop

-        b       term_default_loop

-

-minus_term:

-        mov     r10, #(1024 << 18)      @ r10 = -1024 << 18 for weight clipping

-        rsb     r10, r10, #0            @  (only used for negative terms)

-        cmn     r2, #1

-        beq     term_minus_1

-        cmn     r2, #2

-        beq     term_minus_2

-        cmn     r2, #3

-        beq     term_minus_3

-        b       common_exit

-

-/*

- ******************************************************************************

- * Loop to handle term = 17 condition

- *

- * r0 = dpp->weight_B           r8 = previous left sample

- * r1 = bptr                    r9 = 

- * r2 = current sample          r10 = second previous left sample << 4

- * r3 = previous right sample   r11 = lo accumulator (for rounding)

- * r4 = dpp->weight_A           ip = current decorrelation value

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = second previous right sample << 4

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_17_loop:

-        rsbs    ip, lr, r8, asl #5      @ decorr value = (2 * prev) - 2nd prev

-        mov     lr, r8, asl #4          @ previous becomes 2nd previous

-        ldr     r2, [r1], #4            @ get sample & update pointer

-        mov     r11, #0x80000000

-        mov     r8, r2

-        smlalne r11, r8, r4, ip

-        strne   r8, [r1, #-4]           @ if change possible, store sample back

-        cmpne   r2, #0

-        beq     .L325

-        teq     ip, r2                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-

-.L325:  rsbs    ip, r10, r3, asl #5     @ do same thing for right channel

-        mov     r10, r3, asl #4

-        ldr     r2, [r1], #4

-        mov     r11, #0x80000000

-        mov     r3, r2

-        smlalne r11, r3, r0, ip

-        strne   r3, [r1, #-4]

-        cmpne   r2, #0

-        beq     .L329

-        teq     ip, r2

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-

-.L329:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_17_loop

-        mov     lr, lr, asr #4

-        mov     r10, r10, asr #4

-        b       store_1718              @ common exit for terms 17 & 18

-

-/*

- ******************************************************************************

- * Loop to handle term = 18 condition

- *

- * r0 = dpp->weight_B           r8 = previous left sample

- * r1 = bptr                    r9 = 

- * r2 = current sample          r10 = second previous left sample

- * r3 = previous right sample   r11 = lo accumulator (for rounding)

- * r4 = dpp->weight_A           ip = decorrelation value

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = second previous right sample

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_18_loop:

-        rsb     ip, lr, r8              @ decorr value =

-        mov     lr, r8                  @  ((3 * prev) - 2nd prev) >> 1

-        add     ip, lr, ip, asr #1

-        movs    ip, ip, asl #4

-        ldr     r2, [r1], #4            @ get sample & update pointer

-        mov     r11, #0x80000000

-        mov     r8, r2

-        smlalne r11, r8, r4, ip

-        strne   r8, [r1, #-4]           @ if change possible, store sample back

-        cmpne   r2, #0

-        beq     .L337

-        teq     ip, r2                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-

-.L337:  rsb     ip, r10, r3             @ do same thing for right channel

-        mov     r10, r3

-        add     ip, r10, ip, asr #1

-        movs    ip, ip, asl #4

-        ldr     r2, [r1], #4

-        mov     r11, #0x80000000

-        mov     r3, r2

-        smlalne r11, r3, r0, ip

-        strne   r3, [r1, #-4]

-        cmpne   r2, #0

-        beq     .L341

-        teq     ip, r2

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-

-.L341:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_18_loop

-

-/* common exit for terms 17 & 18 */

-

-store_1718:

-        str     r3, [r5, #40]           @ store sample history into struct

-        str     r8, [r5, #8]

-        str     r10, [r5, #44]

-        str     lr, [r5, #12]

-        b       common_exit             @ and return

-

-/*

- ******************************************************************************

- * Loop to handle term = 2 condition

- * (note that this case can be handled by the default term handler (1-8), but

- * this special case is faster because it doesn't have to read memory twice)

- *

- * r0 = dpp->weight_B           r8 = previous left sample

- * r1 = bptr                    r9 = 

- * r2 = current sample          r10 = second previous left sample << 4

- * r3 = previous right sample   r11 = lo accumulator (for rounding)

- * r4 = dpp->weight_A           ip = decorrelation value

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = second previous right sample << 4

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_2_loop:

-        movs    ip, lr                  @ get decorrelation value & test

-        ldr     r2, [r1], #4            @ get sample & update pointer

-        mov     lr, r8, asl #4          @ previous becomes 2nd previous

-        mov     r11, #0x80000000

-        mov     r8, r2

-        smlalne r11, r8, r4, ip

-        strne   r8, [r1, #-4]           @ if change possible, store sample back

-        cmpne   r2, #0

-        beq     .L225

-        teq     ip, r2                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-

-.L225:  movs    ip, r10                 @ do same thing for right channel

-        ldr     r2, [r1], #4

-        mov     r10, r3, asl #4

-        mov     r11, #0x80000000

-        mov     r3, r2

-        smlalne r11, r3, r0, ip

-        strne   r3, [r1, #-4]

-        cmpne   r2, #0

-        beq     .L229

-        teq     ip, r2

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-

-.L229:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_2_loop

-

-        b       default_term_exit       @ this exit updates all dpp->samples

-

-/*

- ******************************************************************************

- * Loop to handle default term condition

- *

- * r0 = dpp->weight_B           r8 = result accumulator

- * r1 = bptr                    r9 = 

- * r2 = dpp->term               r10 =

- * r3 = decorrelation value     r11 = lo accumulator (for rounding)

- * r4 = dpp->weight_A           ip = current sample

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr =

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_default_loop:

-        ldr     r3, [r1, -r2, asl #3]   @ get decorrelation value based on term

-        ldr     ip, [r1], #4            @ get original sample and bump ptr

-        movs    r3, r3, asl #4

-        mov     r11, #0x80000000

-        mov     r8, ip

-        smlalne r11, r8, r4, r3

-        strne   r8, [r1, #-4]           @ if possibly changed, store updated sample

-        cmpne   ip, #0

-        beq     .L350

-        teq     ip, r3                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-

-.L350:  ldr     r3, [r1, -r2, asl #3]   @ do the same thing for right channel

-        ldr     ip, [r1], #4

-        movs    r3, r3, asl #4

-        mov     r11, #0x80000000

-        mov     r8, ip

-        smlalne r11, r8, r0, r3

-        strne   r8, [r1, #-4]

-        cmpne   ip, #0

-        beq     .L354

-        teq     ip, r3

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-

-.L354:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_default_loop

-

-/*

- * This exit is used by terms 1-8 to store the previous 8 samples into the decorr

- * structure (even if they are not all used for the given term)

- */

-

-default_term_exit:

-        ldrsh   r3, [r5, #0]

-        sub     ip, r3, #1

-        mov     lr, #7

-

-.L358:  and     r3, ip, #7

-        add     r3, r5, r3, asl #2

-        ldr     r2, [r1, #-4]

-        str     r2, [r3, #40]

-        ldr     r2, [r1, #-8]!

-        str     r2, [r3, #8]

-        sub     ip, ip, #1

-        sub     lr, lr, #1

-        cmn     lr, #1

-        bne     .L358

-        b       common_exit

-

-/*

- ******************************************************************************

- * Loop to handle term = -1 condition

- *

- * r0 = dpp->weight_B           r8 =

- * r1 = bptr                    r9 = 

- * r2 = intermediate result     r10 = -1024 (for clipping)

- * r3 = previous right sample   r11 = lo accumulator (for rounding)

- * r4 = dpp->weight_A           ip = current sample

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = updated left sample

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_minus_1:

-        ldr     r3, [r1, #-4]

-

-term_minus_1_loop:

-        ldr     ip, [r1], #8            @ for left channel the decorrelation value

-        movs    r3, r3, asl #4          @  is the previous right sample (in r3)

-        mov     r11, #0x80000000

-        mov     lr, ip

-        smlalne r11, lr, r4, r3

-        strne   lr, [r1, #-8]

-        cmpne   ip, #0

-        beq     .L361

-        teq     ip, r3                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-        cmp     r4, #(1024 << 18)

-        movgt   r4, #(1024 << 18)

-        cmp     r4, r10

-        movlt   r4, r10

-

-.L361:  ldr     r2, [r1, #-4]           @ for right channel the decorrelation value

-        movs    lr, lr, asl #4

-        mov     r11, #0x80000000

-        mov     r3, r2

-        smlalne r11, r3, r0, lr

-        strne   r3, [r1, #-4]

-        cmpne   r2, #0

-        beq     .L369

-        teq     r2, lr

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-        cmp     r0, #(1024 << 18)               @ then clip weight to +/-1024

-        movgt   r0, #(1024 << 18)

-        cmp     r0, r10

-        movlt   r0, r10

-

-.L369:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_minus_1_loop

-

-        str     r3, [r5, #8]            @ else store right sample and exit

-        b       common_exit

-

-/*

- ******************************************************************************

- * Loop to handle term = -2 condition

- * (note that the channels are processed in the reverse order here)

- *

- * r0 = dpp->weight_B           r8 =

- * r1 = bptr                    r9 = 

- * r2 = intermediate result     r10 = -1024 (for clipping)

- * r3 = previous left sample    r11 = lo accumulator (for rounding)

- * r4 = dpp->weight_A           ip = current sample

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr = updated right sample

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_minus_2:

-        ldr     r3, [r1, #-8]

-

-term_minus_2_loop:

-        ldr     ip, [r1, #4]            @ for right channel the decorrelation value

-        movs    r3, r3, asl #4          @  is the previous left sample (in r3)

-        mov     r11, #0x80000000

-        mov     lr, ip

-        smlalne r11, lr, r0, r3

-        strne   lr, [r1, #4]

-        cmpne   ip, #0

-        beq     .L380

-        teq     ip, r3                  @ update weight based on signs

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-        cmp     r0, #(1024 << 18)               @ then clip weight to +/-1024

-        movgt   r0, #(1024 << 18)

-        cmp     r0, r10

-        movlt   r0, r10

-

-.L380:  ldr     r2, [r1], #8            @ for left channel the decorrelation value

-        movs    lr, lr, asl #4

-        mov     r11, #0x80000000

-        mov     r3, r2

-        smlalne r11, r3, r4, lr

-        strne   r3, [r1, #-8]

-        cmpne   r2, #0

-        beq     .L388

-        teq     r2, lr

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-        cmp     r4, #(1024 << 18)

-        movgt   r4, #(1024 << 18)

-        cmp     r4, r10

-        movlt   r4, r10

-

-.L388:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_minus_2_loop

-

-        str     r3, [r5, #40]           @ else store left channel and exit

-        b       common_exit

-

-/*

- ******************************************************************************

- * Loop to handle term = -3 condition

- *

- * r0 = dpp->weight_B           r8 = previous left sample

- * r1 = bptr                    r9 = 

- * r2 = current left sample     r10 = -1024 (for clipping)

- * r3 = previous right sample   r11 = lo accumulator (for rounding)

- * r4 = dpp->weight_A           ip = intermediate result

- * r5 = dpp                     sp =

- * r6 = dpp->delta              lr =

- * r7 = eptr                    pc =

- *******************************************************************************

- */

-

-term_minus_3:

-        ldr     r3, [r1, #-4]           @ load previous samples

-        ldr     r8, [r1, #-8]

-

-term_minus_3_loop:

-        ldr     ip, [r1], #4

-        movs    r3, r3, asl #4

-        mov     r11, #0x80000000

-        mov     r2, ip

-        smlalne r11, r2, r4, r3

-        strne   r2, [r1, #-4]

-        cmpne   ip, #0

-        beq     .L399

-        teq     ip, r3                  @ update weight based on signs

-        submi   r4, r4, r6

-        addpl   r4, r4, r6

-        cmp     r4, #(1024 << 18)       @ then clip weight to +/-1024

-        movgt   r4, #(1024 << 18)

-        cmp     r4, r10

-        movlt   r4, r10

-

-.L399:  movs    ip, r8, asl #4          @ ip = previous left we use now

-        mov     r8, r2                  @ r8 = current left we use next time

-        ldr     r2, [r1], #4

-        mov     r11, #0x80000000

-        mov     r3, r2

-        smlalne r11, r3, r0, ip

-        strne   r3, [r1, #-4]

-        cmpne   r2, #0

-        beq     .L407

-        teq     ip, r2

-        submi   r0, r0, r6

-        addpl   r0, r0, r6

-        cmp     r0, #(1024 << 18)

-        movgt   r0, #(1024 << 18)

-        cmp     r0, r10

-        movlt   r0, r10

-

-.L407:  cmp     r7, r1                  @ loop back if more samples to do

-        bhi     term_minus_3_loop

-

-        str     r3, [r5, #8]            @ else store previous samples & exit

-        str     r8, [r5, #40]

-

-/*

- * Before finally exiting we must store weights back for next time

- */

-

-common_exit:

-        mov     r0, r0, asr #18         @ restore weights to real magnitude

-        mov     r4, r4, asr #18

-        strh    r4, [r5, #4]

-        strh    r0, [r5, #6]

-        ldmfd   sp!, {r4 - r8, r10, r11, pc}

-

diff --git a/src/wavpack/bits.c b/src/wavpack/bits.c
deleted file mode 100644
index dbfa0cae..00000000
--- a/src/wavpack/bits.c
+++ /dev/null
@@ -1,140 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-// bits.c

-

-// This module provides utilities to support the BitStream structure which is

-// used to read and write all WavPack audio data streams. It also contains a

-// wrapper for the stream I/O functions and a set of functions dealing with

-// endian-ness, both for enhancing portability. Finally, a debug wrapper for

-// the malloc() system is provided.

-

-#include "wavpack.h"

-

-#include <string.h>

-#include <ctype.h>

-

-////////////////////////// Bitstream functions ////////////////////////////////

-

-// Open the specified BitStream and associate with the specified buffer.

-

-static void bs_read (Bitstream *bs);

-

-void bs_open_read (Bitstream *bs, uchar *buffer_start, uchar *buffer_end, read_stream file, uint32_t file_bytes)

-{

-    CLEAR (*bs);

-    bs->buf = buffer_start;

-    bs->end = buffer_end;

-

-    if (file) {

-        bs->ptr = bs->end - 1;

-        bs->file_bytes = file_bytes;

-        bs->file = file;

-    }

-    else

-        bs->ptr = bs->buf - 1;

-

-    bs->wrap = bs_read;

-}

-

-// This function is only called from the getbit() and getbits() macros when

-// the BitStream has been exhausted and more data is required. Sinve these

-// bistreams no longer access files, this function simple sets an error and

-// resets the buffer.

-

-static void bs_read (Bitstream *bs)

-{

-    if (bs->file && bs->file_bytes) {

-        uint32_t bytes_read, bytes_to_read = bs->end - bs->buf;

-

-        if (bytes_to_read > bs->file_bytes)

-            bytes_to_read = bs->file_bytes;

-

-        bytes_read = bs->file (bs->buf, bytes_to_read);

-

-        if (bytes_read) {

-            bs->end = bs->buf + bytes_read;

-            bs->file_bytes -= bytes_read;

-        }

-        else {

-            memset (bs->buf, -1, bs->end - bs->buf);

-            bs->error = 1;

-        }

-    }

-    else

-        bs->error = 1;

-

-    if (bs->error)

-        memset (bs->buf, -1, bs->end - bs->buf);

-

-    bs->ptr = bs->buf;

-}

-

-/////////////////////// Endian Correction Routines ////////////////////////////

-

-void little_endian_to_native (void *data, char *format)

-{

-    uchar *cp = (uchar *) data;

-    int32_t temp;

-

-    while (*format) {

-        switch (*format) {

-            case 'L':

-                temp = cp [0] + ((int32_t) cp [1] << 8) + ((int32_t) cp [2] << 16) + ((int32_t) cp [3] << 24);

-                * (int32_t *) cp = temp;

-                cp += 4;

-                break;

-

-            case 'S':

-                temp = cp [0] + (cp [1] << 8);

-                * (short *) cp = (short) temp;

-                cp += 2;

-                break;

-

-            default:

-                if (isdigit (*format))

-                    cp += *format - '0';

-

-                break;

-        }

-

-        format++;

-    }

-}

-

-void native_to_little_endian (void *data, char *format)

-{

-    uchar *cp = (uchar *) data;

-    int32_t temp;

-

-    while (*format) {

-        switch (*format) {

-            case 'L':

-                temp = * (int32_t *) cp;

-                *cp++ = (uchar) temp;

-                *cp++ = (uchar) (temp >> 8);

-                *cp++ = (uchar) (temp >> 16);

-                *cp++ = (uchar) (temp >> 24);

-                break;

-

-            case 'S':

-                temp = * (short *) cp;

-                *cp++ = (uchar) temp;

-                *cp++ = (uchar) (temp >> 8);

-                break;

-

-            default:

-                if (isdigit (*format))

-                    cp += *format - '0';

-

-                break;

-        }

-

-        format++;

-    }

-}

diff --git a/src/wavpack/coldfire.S b/src/wavpack/coldfire.S
deleted file mode 100644
index 93df9d82..00000000
--- a/src/wavpack/coldfire.S
+++ /dev/null
@@ -1,525 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-/* This is an assembly optimized version of the following WavPack function:

- *

- * void decorr_stereo_pass_cont (struct decorr_pass *dpp,

- *                               long *buffer, long sample_count);

- *

- * It performs a single pass of stereo decorrelation on the provided buffer.

- * Note that this version of the function requires that the 8 previous stereo

- * samples are visible and correct. In other words, it ignores the "samples_*"

- * fields in the decorr_pass structure and gets the history data directly

- * from the buffer. It does, however, return the appropriate history samples

- * to the decorr_pass structure before returning.

- *

- * This is written to work on a MCF5249 processor, or any processor based on

- * the ColdFire V2 core with an EMAC unit. The EMAC is perfectly suited for

- * the "apply_weight" function of WavPack decorrelation because it provides

- * the requires 40-bit product. The fractional rounding mode of the EMAC is not

- * configurable and uses "round to even" while WavPack uses "round to larger",

- * so the rounding has to be done manually.

- */

-

-        .text

-        .align  2

-        .global decorr_stereo_pass_cont_mcf5249

-

-decorr_stereo_pass_cont_mcf5249:

-

-        lea     (-44, %sp), %sp

-        movem.l %d2-%d7/%a2-%a6, (%sp)

-        move.l  44+4(%sp), %a2          | a2 = dpp->

-        move.l  44+8(%sp), %a1          | a1 = bptr

-        move.w  2(%a2), %a3             | a3 = dpp->delta

-        move.w  4(%a2), %d3             | d3 = dpp->weight_A (sign extended)

-        ext.l   %d3

-        move.w  6(%a2), %d4             | d4 = dpp->weight_B (sign extended)

-        ext.l   %d4

-        move.l 44+12(%sp), %d0          | d0 = sample_count

-        jbeq    return_only             | if zero, nothing to do

-

-        lsl.l   #3, %d0                 | d5 = bptr + (sample_count * 8)

-        move.l  %d0, %d5

-        add.l   %a1, %d5

-

-        moveq.l #17, %d0                | left shift weights & delta 17 places

-        asl.l   %d0, %d3

-        asl.l   %d0, %d4

-        move.l  %a3, %d1

-        asl.l   %d0, %d1

-        move.l  %d1, %a3

-

-        moveq.l #0x20, %d6

-        move.l  %d6, %macsr             | set fractional mode for MAC

-        move.l  #0, %acc1               | acc1 = 0x00 0000 80 (for rounding)

-        move.l  #0x800000, %accext01

-        

-        move.l  #1024<<17, %d6          | d6 & d7 are weight clipping limits

-        move.l  #-1024<<17, %d7         | (only used by negative terms)

-

-        move.w  (%a2), %d0              | d0 = term

-        ext.l   %d0

-        cmp.l   #17, %d0

-        jbeq    term_17                 | term = 17

-        cmp.l   #18, %d0

-        jbeq    term_18                 | term = 18

-        addq.l  #1, %d0

-        jbeq    term_minus_1            | term = -1

-        addq.l  #1, %d0

-        jbeq    term_minus_2            | term = -2

-        addq.l  #1, %d0

-        jbeq    term_minus_3            | term = -3

-        jbra    term_default            | default term = 1 - 8

-

-|------------------------------------------------------------------------------

-| Loop to handle term = 17 condition

-|

-| a0 =                          d0 = (2 * bptr [-1]) - bptr [-2]

-| a1 = bptr                     d1 = initial bptr [0]

-| a2 = dpp->                    d2 = updated bptr [0]

-| a3 = dpp->delta << 17         d3 = dpp->weight_A << 17

-| a4 =                          d4 = dpp->weight_B << 17

-| a5 =                          d5 = eptr

-| macsr = 0x20                  acc1 = 0x00 0000 80

-|------------------------------------------------------------------------------

-

-term_17:

-        move.l  -8(%a1), %d0            | d0 = 2 * bptr [-1] - bptr [-2]

-        add.l   %d0, %d0

-        sub.l   -16(%a1), %d0

-        beq     .L251                   | if zero, skip calculation

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + (d0 << 4) * weight_A

-        mac.l   %d0, %d3, %acc0

-        move.l  (%a1), %d1

-        beq     .L255

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L256                   | if same, add delta to weight

-        sub.l   %a3, %d3                | else subtract delta from weight

-        sub.l   %a3, %d3                | subtract again instead of branch

-.L256:  add.l   %a3, %d3                | add delta to weight

-

-.L255:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | update bptr [0] and store

-        move.l  %d2, (%a1)+

-

-.L253:  move.l  -8(%a1), %d0            | d0 = 2 * bptr [-1] - bptr [-2]

-        add.l   %d0, %d0

-        sub.l   -16(%a1), %d0

-        beq     .L257                   | if zero, skip calculations

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + (d0 << 4) * weight_B

-        mac.l   %d0, %d4, %acc0

-        move.l  (%a1), %d1

-        beq     .L254

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L259                   | if same, add delta to weight

-        sub.l   %a3, %d4                | else subtract delta from weight

-        sub.l   %a3, %d4                | subtract again instead of branch

-.L259:  add.l   %a3, %d4                | add delta to weight

-

-.L254:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | update bptr [0] and store

-        move.l  %d2, (%a1)+

-

-.L252:  cmp.l   %a1, %d5                | loop if bptr < eptr

-        jbhi    term_17

-        bra     term_17_18_finish       | exit through common path

-

-.L251:  addq.l  #4, %a1                 | update point and jump back into loop

-        bra     .L253

-

-.L257:  addq.l  #4, %a1                 | update point and jump back into loop

-        bra     .L252

-

-|------------------------------------------------------------------------------

-| Loop to handle term = 18 condition

-|

-| a0 =                          d0 = ((3 * bptr [-1]) - bptr [-2]) >> 1

-| a1 = bptr                     d1 = initial bptr [0]

-| a2 = dpp->                    d2 = updated bptr [0]

-| a3 = dpp->delta << 17         d3 = dpp->weight_A << 17

-| a4 =                          d4 = dpp->weight_B << 17

-| a5 =                          d5 = eptr

-| macsr = 0x20                  acc1 = 0x00 0000 80

-|------------------------------------------------------------------------------

-

-term_18:

-        move.l  -8(%a1), %a0            | d0 = (3 * bptr [-1] - bptr [-2]) >> 1

-        lea     (%a0,%a0.l*2), %a0

-        move.l  %a0, %d0

-        sub.l   -16(%a1), %d0

-        asr.l   #1, %d0

-        beq     .L260

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + (d0 << 4) * weight_A

-        mac.l   %d0, %d3, %acc0

-        move.l  (%a1), %d1

-        beq     .L266

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L267                   | if same, add delta to weight

-        sub.l   %a3, %d3                | else subtract delta from weight

-        sub.l   %a3, %d3                | subtract again instead of branch

-.L267:  add.l   %a3, %d3                | add delta to weight

-

-.L266:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | add applied weight to bptr [0], store

-        move.l  %d2, (%a1)+

-

-.L268:  move.l  -8(%a1), %a0            | d0 = (3 * bptr [-1] - bptr [-2]) >> 1

-        lea     (%a0,%a0.l*2), %a0

-        move.l  %a0, %d0

-        sub.l   -16(%a1), %d0

-        asr.l   #1, %d0

-        beq     .L261

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + (d0 << 4) * weight_B

-        mac.l   %d0, %d4, %acc0

-        move.l  (%a1), %d1

-        beq     .L265

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L270                   | if same, add delta to weight

-        sub.l   %a3, %d4                | else subtract delta from weight

-        sub.l   %a3, %d4                | subtract again instead of branch

-.L270:  add.l   %a3, %d4                | add delta to weight

-

-.L265:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | add applied weight to bptr [0], store

-        move.l  %d2, (%a1)+

-

-.L269:  cmp.l   %a1, %d5                | loop if bptr < eptr

-        jbhi    term_18

-        bra     term_17_18_finish       | exit through common path

-

-.L260:  addq.l  #4, %a1                 | bump pointer and jump back into loop

-        bra     .L268

-

-.L261:  addq.l  #4, %a1                 | bump pointer and jump back into loop

-        bra     .L269

-

-term_17_18_finish:

-        move.l  -4(%a1), 40(%a2)        | restore dpp->samples_A [0-1], B [0-1]

-        move.l  -8(%a1), 8(%a2)

-        move.l  -12(%a1), 44(%a2)

-        move.l  -16(%a1), 12(%a2)

-        jbra    finish_up

-

-|------------------------------------------------------------------------------

-| Loop to handle default terms (i.e. 1 - 8)

-|

-| a0 = tptr                     d0 = tptr [0]

-| a1 = bptr                     d1 = initial bptr [0]

-| a2 = dpp->                    d2 = updated bptr [0]

-| a3 = dpp->delta << 17         d3 = dpp->weight_A << 17

-| a4 =                          d4 = dpp->weight_B << 17

-| a5 =                          d5 = eptr

-| macsr = 0x20                  acc1 = 0x00 0000 80

-|------------------------------------------------------------------------------

-

-term_default:

-        move.w  (%a2), %d0              | a0 = a1 - (dpp->term * 8)

-        ext.l   %d0

-        lsl.l   #3, %d0

-        move.l  %a1, %a0

-        sub.l   %d0, %a0

-

-term_default_loop:

-        move.l  (%a0)+, %d0             | d0 = tptr [0], skip ahead if zero

-        beq     .L271

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + (d0 << 4) * weight_A

-        mac.l   %d0, %d3, %acc0

-        move.l  (%a1), %d1

-        beq     .L277

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L278                   | if same, add delta to weight

-        sub.l   %a3, %d3                | else subtract delta from weight

-        sub.l   %a3, %d3                | subtract again instead of branch

-.L278:  add.l   %a3, %d3                | add delta to weight

-

-.L277:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | add applied weight to bptr [0], store

-        move.l  %d2, (%a1)+

-

-.L275:  move.l  (%a0)+, %d0             | d0 = tptr [0], skip ahead if zero

-        beq     .L272

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + (d0 << 4) * weight_B

-        mac.l   %d0, %d4, %acc0

-        move.l  (%a1), %d1

-        beq     .L276

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L281                   | if same, add delta to weight

-        sub.l   %a3, %d4                | else subtract delta from weight

-        sub.l   %a3, %d4                | subtract again instead of branch

-.L281:  add.l   %a3, %d4                | add delta to weight

-

-.L276:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | add applied weight to bptr [0], store

-        move.l  %d2, (%a1)+

-

-.L274:  cmp.l   %a1, %d5                | loop back if bptr < eptr

-        jbhi    term_default_loop

-        move.w  (%a2), %d0              | d0 = term - 1

-        moveq.l #8, %d1                 | d1 = loop counter

-

-.L323:  subq.l  #1, %d0                 | back up & mask index

-        and.l   #7, %d0

-        move.l  -(%a1), 40(%a2,%d0.l*4) | store dpp->samples_B [d0]

-        move.l  -(%a1), 8(%a2,%d0.l*4)  | store dpp->samples_A [d0]

-        subq.l  #1, %d1                 | loop on count

-        jbne    .L323

-        jbra    finish_up

-

-.L271:  addq.l  #4, %a1                 | bump pointer and jump back into loop

-        bra     .L275

-

-.L272:  addq.l  #4, %a1                 | bump pointer and jump back into loop

-        bra     .L274

-

-

-|------------------------------------------------------------------------------

-| Loop to handle term = -1 condition

-|

-| a0 =                          d0 = decorrelation sample

-| a1 = bptr                     d1 = initial bptr [0]

-| a2 = dpp->                    d2 = updated bptr [0]

-| a3 = dpp->delta << 17         d3 = dpp->weight_A << 17

-| a4 =                          d4 = dpp->weight_B << 17

-| a5 =                          d5 = eptr

-| a6 =                          d6 = 1024 << 17

-| a7 =                          d7 = -1024 << 17

-| macsr = 0x20                  acc1 = 0x00 0000 80

-|------------------------------------------------------------------------------

-

-term_minus_1:

-        move.l  -4(%a1), %d0            | d0 = bptr [-1]

-        beq     .L402

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + ((d0 << 4) * weight_A)

-        mac.l   %d0, %d3, %acc0

-        move.l  (%a1), %d1

-        beq     .L405

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L404                   | if same, add delta to weight

-        sub.l   %a3, %d3                | else subtract delta from weight

-        cmp.l   %d7, %d3                | check for negative clip limit

-        bge     .L405

-        move.l  %d7, %d3

-        bra     .L405

-

-.L404:  add.l   %a3, %d3                | add delta to weight

-        cmp.l   %d6, %d3                | check for positive clip limit

-        ble     .L405

-        move.l  %d6, %d3

-

-.L405:  move.l  %acc0, %d0              | d2 = rounded product

-        add.l   %d1, %d0                | add applied weight to bptr [0], store

-        move.l  %d0, (%a1)+

-        beq     .L401

-

-.L410:  move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + ((d0 << 4) * weight_B)

-        mac.l   %d0, %d4, %acc0

-        move.l  (%a1), %d1

-        beq     .L403

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L407                   | if same, add delta to weight

-        sub.l   %a3, %d4                | else subtract delta from weight

-        cmp.l   %d7, %d4                | check for negative clip limit

-        bge     .L403

-        move.l  %d7, %d4

-        bra     .L403

-

-.L407:  add.l   %a3, %d4                | add delta to weight

-        cmp.l   %d6, %d4                | check for positive clip limit

-        ble     .L403

-        move.l  %d6, %d4

-

-.L403:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | add applied weight to bptr [1], store

-        move.l  %d2, (%a1)+

-

-.L411:  cmp.l   %a1, %d5                | loop back if bptr < eptr

-        jbhi    term_minus_1

-        move.l  -4(%a1), 8(%a2)         | dpp->samples_A [0] = bptr [-1]

-        jbra    finish_up

-

-.L402:  move.l  (%a1)+, %d0

-        bne     .L410

-

-.L401:  addq.l  #4, %a1

-        bra     .L411

-

-

-|------------------------------------------------------------------------------

-| Loop to handle term = -2 condition

-|

-| a0 =                          d0 = decorrelation sample

-| a1 = bptr                     d1 = initial bptr [0]

-| a2 = dpp->                    d2 = updated bptr [0]

-| a3 = dpp->delta << 17         d3 = dpp->weight_A << 17

-| a4 =                          d4 = dpp->weight_B << 17

-| a5 =                          d5 = eptr

-| a6 =                          d6 = 1024 << 17

-| a7 =                          d7 = -1024 << 17

-| macsr = 0x20                  acc1 = 0x00 0000 80

-|------------------------------------------------------------------------------

-

-term_minus_2:

-        move.l  -8(%a1), %d0            | d0 = bptr [-2]

-        beq     .L511

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + ((d0 << 4) * weight_B)

-        mac.l   %d0, %d4, %acc0

-        move.l  4(%a1), %d1

-        beq     .L505

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L504                   | if same, add delta to weight

-        sub.l   %a3, %d4                | else subtract delta from weight

-        cmp.l   %d7, %d4                | ckeck for negative clip limit

-        bge     .L505

-        move.l  %d7, %d4

-        bra     .L505

-

-.L504:  add.l   %a3, %d4                | add delta to weight

-        cmp.l   %d6, %d4                | check for positive clip limit

-        ble     .L505

-        move.l  %d6, %d4

-

-.L505:  move.l  %acc0, %d0              | d2 = rounded product

-        add.l   %d1, %d0                | add applied weight to bptr [0], store

-        move.l  %d0, 4(%a1)

-        beq     .L512

-

-.L510:  move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + ((d0 << 4) * weight_A)

-        mac.l   %d0, %d3, %acc0

-        move.l  (%a1), %d1

-        beq     .L503

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L507                   | if same, add delta to weight

-        sub.l   %a3, %d3                | else subtract delta from weight

-        cmp.l   %d7, %d3                | check for negative clip limit

-        bge     .L503

-        move.l  %d7, %d3

-        bra     .L503

-

-.L507:  add.l   %a3, %d3                | add delta to weight

-        cmp.l   %d6, %d3                | check for negative clip limit

-        ble     .L503

-        move.l  %d6, %d3

-

-.L503:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | add applied weight to bptr [1], store

-        move.l  %d2, (%a1)

-

-.L512:  addq.l  #8, %a1

-        cmp.l   %a1, %d5                | loop if bptr < eptr

-        jbhi    term_minus_2

-        move.l  -8(%a1), 40(%a2)        | dpp->samples_B [0] = bptr [-4]

-        jbra    finish_up

-

-.L511:  move.l  4(%a1), %d0

-        beq     .L512

-        bra     .L510

-

-

-|------------------------------------------------------------------------------

-| Loop to handle term = -3 condition

-|

-| a0 =                          d0 = decorrelation sample

-| a1 = bptr                     d1 = initial bptr [0]

-| a2 = dpp->                    d2 = updated bptr [0]

-| a3 = dpp->delta << 17         d3 = dpp->weight_A << 17

-| a4 =                          d4 = dpp->weight_B << 17

-| a5 =                          d5 = eptr

-| a6 =                          d6 = 1024 << 17

-| a7 =                          d7 = -1024 << 17

-| macsr = 0x20                  acc1 = 0x00 0000 80

-|------------------------------------------------------------------------------

-

-term_minus_3:

-        move.l  -4(%a1), %d0            | d0 = bptr [-1]

-        beq     .L301

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + ((d0 << 4) * weight_A)

-        mac.l   %d0, %d3, %acc0

-        move.l  (%a1), %d1

-        beq     .L320

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L319                   | if same, add delta to weight

-        sub.l   %a3, %d3                | else subtract delta from weight

-        cmp.l   %d7, %d3                | check for negative clip limit

-        bge     .L320

-        move.l  %d7, %d3

-        bra     .L320

-

-.L319:  add.l   %a3, %d3                | add delta to weight

-        cmp.l   %d6, %d3                | check for positive clip limit

-        ble     .L320

-        move.l  %d6, %d3

-

-.L320:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | add applied weight to bptr [0], store

-        move.l  %d2, (%a1)+

-

-.L330:  move.l  -12(%a1), %d0           | d0 = bptr [-2]

-        beq     .L302

-        move.l  %acc1, %acc0

-        asl.l   #4, %d0                 | acc0 = acc1 + ((d0 << 4) * weight_B)

-        mac.l   %d0, %d4, %acc0

-        move.l  (%a1), %d1

-        beq     .L318

-        eor.l   %d1, %d0                | else compare signs

-        bge     .L322                   | if same, add delta to weight

-        sub.l   %a3, %d4                | else subtract delta from weight

-        cmp.l   %d7, %d4                | check for negative clip limit

-        bge     .L318

-        move.l  %d7, %d4

-        bra     .L318

-

-.L322:  add.l   %a3, %d4                | add delta to weight

-        cmp.l   %d6, %d4                | check for positive clip limit

-        ble     .L318

-        move.l  %d6, %d4

-

-.L318:  move.l  %acc0, %d2              | d2 = rounded product

-        add.l   %d1, %d2                | add applied weight to bptr [1], store

-        move.l  %d2, (%a1)+

-

-.L331:  cmp.l   %a1, %d5                | bptr, eptr

-        jbhi    term_minus_3

-        move.l  -4(%a1), 8(%a2)         | dpp->samples_A [0] = bptr [-1]

-        move.l  -8(%a1), 40(%a2)        | dpp->samples_B [0] = bptr [-2]

-        jbra    finish_up

-

-.L301:  addq.l  #4, %a1

-        bra     .L330

-

-.L302:  addq.l  #4, %a1

-        bra     .L331

-

-| finish and return

-

-finish_up:

-        moveq.l #17, %d0

-        asr.l   %d0, %d3

-        asr.l   %d0, %d4

-        move.w  %d3, 4(%a2)     | weight_A, dpp->weight_A

-        move.w  %d4, 6(%a2)     | weight_B, dpp->weight_B

-

-        clr.l   %d0             | clear up EMAC

-        move.l  %d0, %acc0

-        move.l  %d0, %acc1

-

-return_only:

-        movem.l (%sp), %d2-%d7/%a2-%a6

-        lea     (44,%sp), %sp

-        rts

diff --git a/src/wavpack/float.c b/src/wavpack/float.c
deleted file mode 100644
index 4b9b44ee..00000000
--- a/src/wavpack/float.c
+++ /dev/null
@@ -1,50 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-// float.c

-

-#include "wavpack.h"

-

-int read_float_info (WavpackStream *wps, WavpackMetadata *wpmd)

-{

-    int bytecnt = wpmd->byte_length;

-    char *byteptr = wpmd->data;

-

-    if (bytecnt != 4)

-        return FALSE;

-

-    wps->float_flags = *byteptr++;

-    wps->float_shift = *byteptr++;

-    wps->float_max_exp = *byteptr++;

-    wps->float_norm_exp = *byteptr;

-    return TRUE;

-}

-

-void float_values (WavpackStream *wps, int32_t *values, int32_t num_values)

-{

-    int shift = wps->float_max_exp - wps->float_norm_exp + wps->float_shift;

-

-    if (shift > 32)

-        shift = 32;

-    else if (shift < -32)

-        shift = -32;

-

-    while (num_values--) {

-        if (shift > 0)

-            *values <<= shift;

-        else if (shift < 0)

-            *values >>= -shift;

-

-        if (*values > 8388607L)

-            *values = 8388607L;

-        else if (*values < -8388608L)

-            *values = -8388608L;

-

-        values++;

-    }

-}

diff --git a/src/wavpack/license.txt b/src/wavpack/license.txt
deleted file mode 100644
index 98f6e6b1..00000000
--- a/src/wavpack/license.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-               Copyright (c) 1998 - 2006 Conifer Software

-                          All rights reserved.

-

-Redistribution and use in source and binary forms, with or without

-modification, are permitted provided that the following conditions are met:

-

-    * Redistributions of source code must retain the above copyright notice,

-      this list of conditions and the following disclaimer.

-    * Redistributions in binary form must reproduce the above copyright notice,

-      this list of conditions and the following disclaimer in the

-      documentation and/or other materials provided with the distribution.

-    * Neither the name of Conifer Software nor the names of its contributors

-      may be used to endorse or promote products derived from this software

-      without specific prior written permission.

-

-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

-ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR

-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

-DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

-SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

-CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

-OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

diff --git a/src/wavpack/metadata.c b/src/wavpack/metadata.c
deleted file mode 100644
index 578b17f9..00000000
--- a/src/wavpack/metadata.c
+++ /dev/null
@@ -1,105 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-// metadata.c

-

-// This module handles the metadata structure introduced in WavPack 4.0

-

-#include "wavpack.h"

-

-int read_metadata_buff (WavpackContext *wpc, WavpackMetadata *wpmd)

-{

-    uchar tchar;

-

-    if (!wpc->infile (&wpmd->id, 1) || !wpc->infile (&tchar, 1))

-        return FALSE;

-

-    wpmd->byte_length = tchar << 1;

-

-    if (wpmd->id & ID_LARGE) {

-        wpmd->id &= ~ID_LARGE;

-

-        if (!wpc->infile (&tchar, 1))

-            return FALSE;

-

-        wpmd->byte_length += (int32_t) tchar << 9; 

-

-        if (!wpc->infile (&tchar, 1))

-            return FALSE;

-

-        wpmd->byte_length += (int32_t) tchar << 17;

-    }

-

-    if (wpmd->id & ID_ODD_SIZE) {

-        wpmd->id &= ~ID_ODD_SIZE;

-        wpmd->byte_length--;

-    }

-

-    if (wpmd->byte_length && wpmd->byte_length <= sizeof (wpc->read_buffer)) {

-        uint32_t bytes_to_read = wpmd->byte_length + (wpmd->byte_length & 1);

-

-        if (wpc->infile (wpc->read_buffer, bytes_to_read) != (int32_t) bytes_to_read) {

-            wpmd->data = NULL;

-            return FALSE;

-        }

-

-        wpmd->data = wpc->read_buffer;

-    }

-    else

-        wpmd->data = NULL;

-

-    return TRUE;

-}

-

-int process_metadata (WavpackContext *wpc, WavpackMetadata *wpmd)

-{

-    WavpackStream *wps = &wpc->stream;

-

-    switch (wpmd->id) {

-        case ID_DUMMY:

-            return TRUE;

-

-        case ID_DECORR_TERMS:

-            return read_decorr_terms (wps, wpmd);

-

-        case ID_DECORR_WEIGHTS:

-            return read_decorr_weights (wps, wpmd);

-

-        case ID_DECORR_SAMPLES:

-            return read_decorr_samples (wps, wpmd);

-

-        case ID_ENTROPY_VARS:

-            return read_entropy_vars (wps, wpmd);

-

-        case ID_HYBRID_PROFILE:

-            return read_hybrid_profile (wps, wpmd);

-

-        case ID_FLOAT_INFO:

-            return read_float_info (wps, wpmd);

-

-        case ID_INT32_INFO:

-            return read_int32_info (wps, wpmd);

-

-        case ID_CHANNEL_INFO:

-            return read_channel_info (wpc, wpmd);

-

-        case ID_CONFIG_BLOCK:

-            return read_config_info (wpc, wpmd);

-

-        case ID_WV_BITSTREAM:

-            return init_wv_bitstream (wpc, wpmd);

-

-        case ID_SHAPING_WEIGHTS:

-        case ID_WVC_BITSTREAM:

-        case ID_WVX_BITSTREAM:

-            return TRUE;

-

-        default:

-            return (wpmd->id & ID_OPTIONAL_DATA) ? TRUE : FALSE;

-    }

-}

diff --git a/src/wavpack/readme.txt b/src/wavpack/readme.txt
deleted file mode 100644
index 4ccbdf42..00000000
--- a/src/wavpack/readme.txt
+++ /dev/null
@@ -1,68 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-This package contains a tiny version of the WavPack 4.40 decoder that might

-be used in a "resource limited" CPU environment or form the basis for a

-hardware decoding implementation. It is packaged with a demo command-line

-program that accepts a WavPack audio file on stdin and outputs a RIFF wav

-file to stdout. The program is standard C, and a win32 executable is

-included which was compiled under MS Visual C++ 6.0 using this command:

-

-cl /O1 /DWIN32 wvfilter.c wputils.c unpack.c float.c metadata.c words.c bits.c

-

-WavPack data is read with a stream reading callback. No direct seeking is

-provided for, but it is possible to start decoding anywhere in a WavPack

-stream. In this case, WavPack will be able to provide the sample-accurate

-position when it synchs with the data and begins decoding. The WIN32 macro

-is used for Windows to force the stdin and stdout streams to be binary mode.

-

-Compared to the previous version, this library has been optimized somewhat

-for improved performance in exchange for slightly larger code size. The

-library also now includes hand-optimized assembly language versions of the

-decorrelation functions for both the ColdFire (w/EMAC) and ARM processors.

-

-For demonstration purposes this uses a single static copy of the

-WavpackContext structure, so obviously it cannot be used for more than one

-file at a time. Also, this decoder will not handle "correction" files, plays

-only the first two channels of multi-channel files, and is limited in

-resolution in some large integer or floating point files (but always

-provides at least 24 bits of resolution). It also will not accept WavPack

-files from before version 4.0.

-

-The previous version of this library would handle float files by returning

-32-bit floating-point data (even though no floating point math was used).

-Because this library would normally be used for simply playing WavPack

-files where lossless performance (beyond 24-bits) is not relevant, I have

-changed this behavior. Now, these files will generate clipped 24-bit data.

-The MODE_FLOAT flag will still be returned by WavpackGetMode(), but the

-BitsPerSample and BytesPerSample queries will be 24 and 3, respectfully.

-What this means is that an application that can handle 24-bit data will

-now be able to handle floating point data (assuming that the MODE_FLOAT

-flag is ignored).

-

-To make this code viable on the greatest number of hardware platforms, the

-following are true:

-

-   speed is about 5x realtime on an AMD K6 300 MHz

-      ("high" mode 16/44 stereo; normal mode is about twice that fast)

-

-   no floating-point math required; just 32b * 32b = 32b int multiply

-

-   large data areas are static and less than 4K total

-   executable code and tables are less than 40K

-   no malloc / free usage

-

-To maintain compatibility on various platforms, the following conventions

-are used:

-

-   a "char" must be exactly 8-bits

-   a "short" must be exactly 16-bits

-   an "int" must be at least 16-bits, but may be larger

-   the "long" type is not used to avoid problems with 64-bit compilers

-

-Questions or comments should be directed to david@wavpack.com

diff --git a/src/wavpack/unpack.c b/src/wavpack/unpack.c
deleted file mode 100644
index 2bed5a0c..00000000
--- a/src/wavpack/unpack.c
+++ /dev/null
@@ -1,785 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-// unpack.c

-

-// This module actually handles the decompression of the audio data, except

-// for the entropy decoding which is handled by the words.c module. For

-// maximum efficiency, the conversion is isolated to tight loops that handle

-// an entire buffer.

-

-#include "wavpack.h"

-

-#include <stdlib.h>

-#include <string.h>

-

-#define LOSSY_MUTE

-

-///////////////////////////// executable code ////////////////////////////////

-

-// This function initializes everything required to unpack a WavPack block

-// and must be called before unpack_samples() is called to obtain audio data.

-// It is assumed that the WavpackHeader has been read into the wps->wphdr

-// (in the current WavpackStream). This is where all the metadata blocks are

-// scanned up to the one containing the audio bitstream.

-

-int unpack_init (WavpackContext *wpc)

-{

-    WavpackStream *wps = &wpc->stream;

-    WavpackMetadata wpmd;

-

-    if (wps->wphdr.block_samples && wps->wphdr.block_index != (uint32_t) -1)

-        wps->sample_index = wps->wphdr.block_index;

-

-    wps->mute_error = FALSE;

-    wps->crc = 0xffffffff;

-    CLEAR (wps->wvbits);

-    CLEAR (wps->decorr_passes);

-    CLEAR (wps->w);

-

-    while (read_metadata_buff (wpc, &wpmd)) {

-        if (!process_metadata (wpc, &wpmd)) {

-            strcpy (wpc->error_message, "invalid metadata!");

-            return FALSE;

-        }

-

-        if (wpmd.id == ID_WV_BITSTREAM)

-            break;

-    }

-

-    if (wps->wphdr.block_samples && !bs_is_open (&wps->wvbits)) {

-        strcpy (wpc->error_message, "invalid WavPack file!");

-        return FALSE;

-    }

-

-    if (wps->wphdr.block_samples) {

-        if ((wps->wphdr.flags & INT32_DATA) && wps->int32_sent_bits)

-            wpc->lossy_blocks = TRUE;

-

-        if ((wps->wphdr.flags & FLOAT_DATA) &&

-            wps->float_flags & (FLOAT_EXCEPTIONS | FLOAT_ZEROS_SENT | FLOAT_SHIFT_SENT | FLOAT_SHIFT_SAME))

-                wpc->lossy_blocks = TRUE;

-    }

-

-    return TRUE;

-}

-

-// This function initialzes the main bitstream for audio samples, which must

-// be in the "wv" file.

-

-int init_wv_bitstream (WavpackContext *wpc, WavpackMetadata *wpmd)

-{

-    WavpackStream *wps = &wpc->stream;

-

-    if (wpmd->data)

-        bs_open_read (&wps->wvbits, wpmd->data, (unsigned char *) wpmd->data + wpmd->byte_length, NULL, 0);

-    else if (wpmd->byte_length)

-        bs_open_read (&wps->wvbits, wpc->read_buffer, wpc->read_buffer + sizeof (wpc->read_buffer),

-            wpc->infile, wpmd->byte_length + (wpmd->byte_length & 1));

-

-    return TRUE;

-}

-

-// Read decorrelation terms from specified metadata block into the

-// decorr_passes array. The terms range from -3 to 8, plus 17 & 18;

-// other values are reserved and generate errors for now. The delta

-// ranges from 0 to 7 with all values valid. Note that the terms are

-// stored in the opposite order in the decorr_passes array compared

-// to packing.

-

-int read_decorr_terms (WavpackStream *wps, WavpackMetadata *wpmd)

-{

-    int termcnt = wpmd->byte_length;

-    uchar *byteptr = wpmd->data;

-    struct decorr_pass *dpp;

-

-    if (termcnt > MAX_NTERMS)

-        return FALSE;

-

-    wps->num_terms = termcnt;

-

-    for (dpp = wps->decorr_passes + termcnt - 1; termcnt--; dpp--) {

-        dpp->term = (int)(*byteptr & 0x1f) - 5;

-        dpp->delta = (*byteptr++ >> 5) & 0x7;

-

-        if (!dpp->term || dpp->term < -3 || (dpp->term > MAX_TERM && dpp->term < 17) || dpp->term > 18)

-            return FALSE;

-    }

-

-    return TRUE;

-}

-

-// Read decorrelation weights from specified metadata block into the

-// decorr_passes array. The weights range +/-1024, but are rounded and

-// truncated to fit in signed chars for metadata storage. Weights are

-// separate for the two channels and are specified from the "last" term

-// (first during encode). Unspecified weights are set to zero.

-

-int read_decorr_weights (WavpackStream *wps, WavpackMetadata *wpmd)

-{

-    int termcnt = wpmd->byte_length, tcount;

-    signed char *byteptr = wpmd->data;

-    struct decorr_pass *dpp;

-

-    if (!(wps->wphdr.flags & MONO_DATA))

-        termcnt /= 2;

-

-    if (termcnt > wps->num_terms)

-        return FALSE;

-

-    for (tcount = wps->num_terms, dpp = wps->decorr_passes; tcount--; dpp++)

-        dpp->weight_A = dpp->weight_B = 0;

-

-    while (--dpp >= wps->decorr_passes && termcnt--) {

-        dpp->weight_A = restore_weight (*byteptr++);

-

-        if (!(wps->wphdr.flags & MONO_DATA))

-            dpp->weight_B = restore_weight (*byteptr++);

-    }

-

-    return TRUE;

-}

-

-// Read decorrelation samples from specified metadata block into the

-// decorr_passes array. The samples are signed 32-bit values, but are

-// converted to signed log2 values for storage in metadata. Values are

-// stored for both channels and are specified from the "last" term

-// (first during encode) with unspecified samples set to zero. The

-// number of samples stored varies with the actual term value, so

-// those must obviously come first in the metadata.

-

-int read_decorr_samples (WavpackStream *wps, WavpackMetadata *wpmd)

-{

-    uchar *byteptr = wpmd->data;

-    uchar *endptr = byteptr + wpmd->byte_length;

-    struct decorr_pass *dpp;

-    int tcount;

-

-    for (tcount = wps->num_terms, dpp = wps->decorr_passes; tcount--; dpp++) {

-        CLEAR (dpp->samples_A);

-        CLEAR (dpp->samples_B);

-    }

-

-    if (wps->wphdr.version == 0x402 && (wps->wphdr.flags & HYBRID_FLAG)) {

-        byteptr += 2;

-

-        if (!(wps->wphdr.flags & MONO_DATA))

-            byteptr += 2;

-    }

-

-    while (dpp-- > wps->decorr_passes && byteptr < endptr)

-        if (dpp->term > MAX_TERM) {

-            dpp->samples_A [0] = exp2s ((short)(byteptr [0] + (byteptr [1] << 8)));

-            dpp->samples_A [1] = exp2s ((short)(byteptr [2] + (byteptr [3] << 8)));

-            byteptr += 4;

-

-            if (!(wps->wphdr.flags & MONO_DATA)) {

-                dpp->samples_B [0] = exp2s ((short)(byteptr [0] + (byteptr [1] << 8)));

-                dpp->samples_B [1] = exp2s ((short)(byteptr [2] + (byteptr [3] << 8)));

-                byteptr += 4;

-            }

-        }

-        else if (dpp->term < 0) {

-            dpp->samples_A [0] = exp2s ((short)(byteptr [0] + (byteptr [1] << 8)));

-            dpp->samples_B [0] = exp2s ((short)(byteptr [2] + (byteptr [3] << 8)));

-            byteptr += 4;

-        }

-        else {

-            int m = 0, cnt = dpp->term;

-

-            while (cnt--) {

-                dpp->samples_A [m] = exp2s ((short)(byteptr [0] + (byteptr [1] << 8)));

-                byteptr += 2;

-

-                if (!(wps->wphdr.flags & MONO_DATA)) {

-                    dpp->samples_B [m] = exp2s ((short)(byteptr [0] + (byteptr [1] << 8)));

-                    byteptr += 2;

-                }

-

-                m++;

-            }

-        }

-

-    return byteptr == endptr;

-}

-

-// Read the int32 data from the specified metadata into the specified stream.

-// This data is used for integer data that has more than 24 bits of magnitude

-// or, in some cases, used to eliminate redundant bits from any audio stream.

-

-int read_int32_info (WavpackStream *wps, WavpackMetadata *wpmd)

-{

-    int bytecnt = wpmd->byte_length;

-    char *byteptr = wpmd->data;

-

-    if (bytecnt != 4)

-        return FALSE;

-

-    wps->int32_sent_bits = *byteptr++;

-    wps->int32_zeros = *byteptr++;

-    wps->int32_ones = *byteptr++;

-    wps->int32_dups = *byteptr;

-    return TRUE;

-}

-

-// Read multichannel information from metadata. The first byte is the total

-// number of channels and the following bytes represent the channel_mask

-// as described for Microsoft WAVEFORMATEX.

-

-int read_channel_info (WavpackContext *wpc, WavpackMetadata *wpmd)

-{

-    int bytecnt = wpmd->byte_length, shift = 0;

-    char *byteptr = wpmd->data;

-    uint32_t mask = 0;

-

-    if (!bytecnt || bytecnt > 5)

-        return FALSE;

-

-    wpc->config.num_channels = *byteptr++;

-

-    while (--bytecnt) {

-        mask |= (uint32_t) *byteptr++ << shift;

-        shift += 8;

-    }

-

-    wpc->config.channel_mask = mask;

-    return TRUE;

-}

-

-// Read configuration information from metadata.

-

-int read_config_info (WavpackContext *wpc, WavpackMetadata *wpmd)

-{

-    int bytecnt = wpmd->byte_length;

-    uchar *byteptr = wpmd->data;

-

-    if (bytecnt >= 3) {

-        wpc->config.flags &= 0xff;

-        wpc->config.flags |= (int32_t) *byteptr++ << 8;

-        wpc->config.flags |= (int32_t) *byteptr++ << 16;

-        wpc->config.flags |= (int32_t) *byteptr << 24;

-    }

-

-    return TRUE;

-}

-

-// This monster actually unpacks the WavPack bitstream(s) into the specified

-// buffer as 32-bit integers or floats (depending on orignal data). Lossy

-// samples will be clipped to their original limits (i.e. 8-bit samples are

-// clipped to -128/+127) but are still returned in int32_ts. It is up to the

-// caller to potentially reformat this for the final output including any

-// multichannel distribution, block alignment or endian compensation. The

-// function unpack_init() must have been called and the entire WavPack block

-// must still be visible (although wps->blockbuff will not be accessed again).

-// For maximum clarity, the function is broken up into segments that handle

-// various modes. This makes for a few extra infrequent flag checks, but

-// makes the code easier to follow because the nesting does not become so

-// deep. For maximum efficiency, the conversion is isolated to tight loops

-// that handle an entire buffer. The function returns the total number of

-// samples unpacked, which can be less than the number requested if an error

-// occurs or the end of the block is reached.

-

-#if defined(CPU_COLDFIRE) && !defined(SIMULATOR)

-extern void decorr_stereo_pass_cont_mcf5249 (struct decorr_pass *dpp, int32_t *buffer, int32_t sample_count);

-#elif defined(CPU_ARM) && !defined(SIMULATOR)

-extern void decorr_stereo_pass_cont_arm (struct decorr_pass *dpp, int32_t *buffer, int32_t sample_count);

-extern void decorr_stereo_pass_cont_arml (struct decorr_pass *dpp, int32_t *buffer, int32_t sample_count);

-#else

-static void decorr_stereo_pass_cont (struct decorr_pass *dpp, int32_t *buffer, int32_t sample_count);

-#endif

-

-static void decorr_mono_pass (struct decorr_pass *dpp, int32_t *buffer, int32_t sample_count);

-static void decorr_stereo_pass (struct decorr_pass *dpp, int32_t *buffer, int32_t sample_count);

-static void fixup_samples (WavpackStream *wps, int32_t *buffer, uint32_t sample_count);

-

-int32_t unpack_samples (WavpackContext *wpc, int32_t *buffer, uint32_t sample_count)

-{

-    WavpackStream *wps = &wpc->stream;

-    uint32_t flags = wps->wphdr.flags, crc = wps->crc, i;

-    int32_t mute_limit = (1L << ((flags & MAG_MASK) >> MAG_LSB)) + 2;

-    struct decorr_pass *dpp;

-    int32_t *bptr, *eptr;

-    int tcount;

-

-    if (wps->sample_index + sample_count > wps->wphdr.block_index + wps->wphdr.block_samples)

-        sample_count = wps->wphdr.block_index + wps->wphdr.block_samples - wps->sample_index;

-

-    if (wps->mute_error) {

-        memset (buffer, 0, sample_count * (flags & MONO_FLAG ? 4 : 8));

-        wps->sample_index += sample_count;

-        return sample_count;

-    }

-

-    if (flags & HYBRID_FLAG)

-        mute_limit *= 2;

-

-    ///////////////////// handle version 4 mono data /////////////////////////

-

-    if (flags & MONO_DATA) {

-        eptr = buffer + sample_count;

-        i = get_words (buffer, sample_count, flags, &wps->w, &wps->wvbits);

-

-        for (tcount = wps->num_terms, dpp = wps->decorr_passes; tcount--; dpp++)

-            decorr_mono_pass (dpp, buffer, sample_count);

-

-        for (bptr = buffer; bptr < eptr; ++bptr) {

-            if (labs (bptr [0]) > mute_limit) {

-                i = bptr - buffer;

-                break;

-            }

-

-            crc = crc * 3 + bptr [0];

-        }

-    }

-

-    //////////////////// handle version 4 stereo data ////////////////////////

-

-    else {

-        eptr = buffer + (sample_count * 2);

-        i = get_words (buffer, sample_count, flags, &wps->w, &wps->wvbits);

-

-        if (sample_count < 16)

-            for (tcount = wps->num_terms, dpp = wps->decorr_passes; tcount--; dpp++)

-                decorr_stereo_pass (dpp, buffer, sample_count);

-        else

-            for (tcount = wps->num_terms, dpp = wps->decorr_passes; tcount--; dpp++) {

-                decorr_stereo_pass (dpp, buffer, 8);

-#if defined(CPU_COLDFIRE) && !defined(SIMULATOR)

-                decorr_stereo_pass_cont_mcf5249 (dpp, buffer + 16, sample_count - 8);

-#elif defined(CPU_ARM) && !defined(SIMULATOR)

-                if (((flags & MAG_MASK) >> MAG_LSB) > 15)

-                    decorr_stereo_pass_cont_arml (dpp, buffer + 16, sample_count - 8);

-                else

-                    decorr_stereo_pass_cont_arm (dpp, buffer + 16, sample_count - 8);

-#else

-                decorr_stereo_pass_cont (dpp, buffer + 16, sample_count - 8);

-#endif

-            }

-

-        if (flags & JOINT_STEREO)

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                bptr [0] += (bptr [1] -= (bptr [0] >> 1));

-

-                if (labs (bptr [0]) > mute_limit || labs (bptr [1]) > mute_limit) {

-                    i = (bptr - buffer) / 2;

-                    break;

-                }

-

-                crc = (crc * 3 + bptr [0]) * 3 + bptr [1];

-            }

-        else

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                if (labs (bptr [0]) > mute_limit || labs (bptr [1]) > mute_limit) {

-                    i = (bptr - buffer) / 2;

-                    break;

-                }

-

-                crc = (crc * 3 + bptr [0]) * 3 + bptr [1];

-            }

-    }

-

-    if (i != sample_count) {

-        memset (buffer, 0, sample_count * (flags & MONO_FLAG ? 4 : 8));

-        wps->mute_error = TRUE;

-        i = sample_count;

-    }

-

-    fixup_samples (wps, buffer, i);

-

-    if (flags & FALSE_STEREO) {

-        int32_t *dptr = buffer + i * 2;

-        int32_t *sptr = buffer + i;

-        int32_t c = i;

-

-        while (c--) {

-            *--dptr = *--sptr;

-            *--dptr = *sptr;

-        }

-    }

-

-    wps->sample_index += i;

-    wps->crc = crc;

-

-    return i;

-}

-

-static void decorr_stereo_pass (struct decorr_pass *dpp, int32_t *buffer, int32_t sample_count)

-{

-    int32_t delta = dpp->delta, weight_A = dpp->weight_A, weight_B = dpp->weight_B;

-    int32_t *bptr, *eptr = buffer + (sample_count * 2), sam_A, sam_B;

-    int m, k;

-

-    switch (dpp->term) {

-

-        case 17:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                sam_A = 2 * dpp->samples_A [0] - dpp->samples_A [1];

-                dpp->samples_A [1] = dpp->samples_A [0];

-                dpp->samples_A [0] = apply_weight (weight_A, sam_A) + bptr [0];

-                update_weight (weight_A, delta, sam_A, bptr [0]);

-                bptr [0] = dpp->samples_A [0];

-

-                sam_A = 2 * dpp->samples_B [0] - dpp->samples_B [1];

-                dpp->samples_B [1] = dpp->samples_B [0];

-                dpp->samples_B [0] = apply_weight (weight_B, sam_A) + bptr [1];

-                update_weight (weight_B, delta, sam_A, bptr [1]);

-                bptr [1] = dpp->samples_B [0];

-            }

-

-            break;

-

-        case 18:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                sam_A = (3 * dpp->samples_A [0] - dpp->samples_A [1]) >> 1;

-                dpp->samples_A [1] = dpp->samples_A [0];

-                dpp->samples_A [0] = apply_weight (weight_A, sam_A) + bptr [0];

-                update_weight (weight_A, delta, sam_A, bptr [0]);

-                bptr [0] = dpp->samples_A [0];

-

-                sam_A = (3 * dpp->samples_B [0] - dpp->samples_B [1]) >> 1;

-                dpp->samples_B [1] = dpp->samples_B [0];

-                dpp->samples_B [0] = apply_weight (weight_B, sam_A) + bptr [1];

-                update_weight (weight_B, delta, sam_A, bptr [1]);

-                bptr [1] = dpp->samples_B [0];

-            }

-

-            break;

-

-        default:

-            for (m = 0, k = dpp->term & (MAX_TERM - 1), bptr = buffer; bptr < eptr; bptr += 2) {

-                sam_A = dpp->samples_A [m];

-                dpp->samples_A [k] = apply_weight (weight_A, sam_A) + bptr [0];

-                update_weight (weight_A, delta, sam_A, bptr [0]);

-                bptr [0] = dpp->samples_A [k];

-

-                sam_A = dpp->samples_B [m];

-                dpp->samples_B [k] = apply_weight (weight_B, sam_A) + bptr [1];

-                update_weight (weight_B, delta, sam_A, bptr [1]);

-                bptr [1] = dpp->samples_B [k];

-

-                m = (m + 1) & (MAX_TERM - 1);

-                k = (k + 1) & (MAX_TERM - 1);

-            }

-

-            if (m) {

-                int32_t temp_samples [MAX_TERM];

-

-                memcpy (temp_samples, dpp->samples_A, sizeof (dpp->samples_A));

-

-                for (k = 0; k < MAX_TERM; k++, m++)

-                    dpp->samples_A [k] = temp_samples [m & (MAX_TERM - 1)];

-

-                memcpy (temp_samples, dpp->samples_B, sizeof (dpp->samples_B));

-

-                for (k = 0; k < MAX_TERM; k++, m++)

-                    dpp->samples_B [k] = temp_samples [m & (MAX_TERM - 1)];

-            }

-

-            break;

-

-        case -1:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                sam_A = bptr [0] + apply_weight (weight_A, dpp->samples_A [0]);

-                update_weight_clip (weight_A, delta, dpp->samples_A [0], bptr [0]);

-                bptr [0] = sam_A;

-                dpp->samples_A [0] = bptr [1] + apply_weight (weight_B, sam_A);

-                update_weight_clip (weight_B, delta, sam_A, bptr [1]);

-                bptr [1] = dpp->samples_A [0];

-            }

-

-            break;

-

-        case -2:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                sam_B = bptr [1] + apply_weight (weight_B, dpp->samples_B [0]);

-                update_weight_clip (weight_B, delta, dpp->samples_B [0], bptr [1]);

-                bptr [1] = sam_B;

-                dpp->samples_B [0] = bptr [0] + apply_weight (weight_A, sam_B);

-                update_weight_clip (weight_A, delta, sam_B, bptr [0]);

-                bptr [0] = dpp->samples_B [0];

-            }

-

-            break;

-

-        case -3:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                sam_A = bptr [0] + apply_weight (weight_A, dpp->samples_A [0]);

-                update_weight_clip (weight_A, delta, dpp->samples_A [0], bptr [0]);

-                sam_B = bptr [1] + apply_weight (weight_B, dpp->samples_B [0]);

-                update_weight_clip (weight_B, delta, dpp->samples_B [0], bptr [1]);

-                bptr [0] = dpp->samples_B [0] = sam_A;

-                bptr [1] = dpp->samples_A [0] = sam_B;

-            }

-

-            break;

-    }

-

-    dpp->weight_A = weight_A;

-    dpp->weight_B = weight_B;

-}

-

-#if (!defined(CPU_COLDFIRE) && !defined(CPU_ARM)) || defined(SIMULATOR)

-

-static void decorr_stereo_pass_cont (struct decorr_pass *dpp, int32_t *buffer, int32_t sample_count)

-{

-    int32_t delta = dpp->delta, weight_A = dpp->weight_A, weight_B = dpp->weight_B;

-    int32_t *bptr, *tptr, *eptr = buffer + (sample_count * 2), sam_A, sam_B;

-    int k, i;

-

-    switch (dpp->term) {

-

-        case 17:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                sam_A = 2 * bptr [-2] - bptr [-4];

-                bptr [0] = apply_weight (weight_A, sam_A) + (sam_B = bptr [0]);

-                update_weight (weight_A, delta, sam_A, sam_B);

-

-                sam_A = 2 * bptr [-1] - bptr [-3];

-                bptr [1] = apply_weight (weight_B, sam_A) + (sam_B = bptr [1]);

-                update_weight (weight_B, delta, sam_A, sam_B);

-            }

-

-            dpp->samples_B [0] = bptr [-1];

-            dpp->samples_A [0] = bptr [-2];

-            dpp->samples_B [1] = bptr [-3];

-            dpp->samples_A [1] = bptr [-4];

-            break;

-

-        case 18:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                sam_A = (3 * bptr [-2] - bptr [-4]) >> 1;

-                bptr [0] = apply_weight (weight_A, sam_A) + (sam_B = bptr [0]);

-                update_weight (weight_A, delta, sam_A, sam_B);

-

-                sam_A = (3 * bptr [-1] - bptr [-3]) >> 1;

-                bptr [1] = apply_weight (weight_B, sam_A) + (sam_B = bptr [1]);

-                update_weight (weight_B, delta, sam_A, sam_B);

-            }

-

-            dpp->samples_B [0] = bptr [-1];

-            dpp->samples_A [0] = bptr [-2];

-            dpp->samples_B [1] = bptr [-3];

-            dpp->samples_A [1] = bptr [-4];

-            break;

-

-        default:

-            for (bptr = buffer, tptr = buffer - (dpp->term * 2); bptr < eptr; bptr += 2, tptr += 2) {

-                bptr [0] = apply_weight (weight_A, tptr [0]) + (sam_A = bptr [0]);

-                update_weight (weight_A, delta, tptr [0], sam_A);

-

-                bptr [1] = apply_weight (weight_B, tptr [1]) + (sam_A = bptr [1]);

-                update_weight (weight_B, delta, tptr [1], sam_A);

-            }

-

-            for (k = dpp->term - 1, i = 8; i--; k--) {

-                dpp->samples_B [k & (MAX_TERM - 1)] = *--bptr;

-                dpp->samples_A [k & (MAX_TERM - 1)] = *--bptr;

-            }

-

-            break;

-

-        case -1:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                bptr [0] = apply_weight (weight_A, bptr [-1]) + (sam_A = bptr [0]);

-                update_weight_clip (weight_A, delta, bptr [-1], sam_A);

-                bptr [1] = apply_weight (weight_B, bptr [0]) + (sam_A = bptr [1]);

-                update_weight_clip (weight_B, delta, bptr [0], sam_A);

-            }

-

-            dpp->samples_A [0] = bptr [-1];

-            break;

-

-        case -2:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                bptr [1] = apply_weight (weight_B, bptr [-2]) + (sam_A = bptr [1]);

-                update_weight_clip (weight_B, delta, bptr [-2], sam_A);

-                bptr [0] = apply_weight (weight_A, bptr [1]) + (sam_A = bptr [0]);

-                update_weight_clip (weight_A, delta, bptr [1], sam_A);

-            }

-

-            dpp->samples_B [0] = bptr [-2];

-            break;

-

-        case -3:

-            for (bptr = buffer; bptr < eptr; bptr += 2) {

-                bptr [0] = apply_weight (weight_A, bptr [-1]) + (sam_A = bptr [0]);

-                update_weight_clip (weight_A, delta, bptr [-1], sam_A);

-                bptr [1] = apply_weight (weight_B, bptr [-2]) + (sam_A = bptr [1]);

-                update_weight_clip (weight_B, delta, bptr [-2], sam_A);

-            }

-

-            dpp->samples_A [0] = bptr [-1];

-            dpp->samples_B [0] = bptr [-2];

-            break;

-    }

-

-    dpp->weight_A = weight_A;

-    dpp->weight_B = weight_B;

-}

-

-#endif

-

-static void decorr_mono_pass (struct decorr_pass *dpp, int32_t *buffer, int32_t sample_count)

-{

-    int32_t delta = dpp->delta, weight_A = dpp->weight_A;

-    int32_t *bptr, *eptr = buffer + sample_count, sam_A;

-    int m, k;

-

-    switch (dpp->term) {

-

-        case 17:

-            for (bptr = buffer; bptr < eptr; bptr++) {

-                sam_A = 2 * dpp->samples_A [0] - dpp->samples_A [1];

-                dpp->samples_A [1] = dpp->samples_A [0];

-                dpp->samples_A [0] = apply_weight (weight_A, sam_A) + bptr [0];

-                update_weight (weight_A, delta, sam_A, bptr [0]);

-                bptr [0] = dpp->samples_A [0];

-            }

-

-            break;

-

-        case 18:

-            for (bptr = buffer; bptr < eptr; bptr++) {

-                sam_A = (3 * dpp->samples_A [0] - dpp->samples_A [1]) >> 1;

-                dpp->samples_A [1] = dpp->samples_A [0];

-                dpp->samples_A [0] = apply_weight (weight_A, sam_A) + bptr [0];

-                update_weight (weight_A, delta, sam_A, bptr [0]);

-                bptr [0] = dpp->samples_A [0];

-            }

-

-            break;

-

-        default:

-            for (m = 0, k = dpp->term & (MAX_TERM - 1), bptr = buffer; bptr < eptr; bptr++) {

-                sam_A = dpp->samples_A [m];

-                dpp->samples_A [k] = apply_weight (weight_A, sam_A) + bptr [0];

-                update_weight (weight_A, delta, sam_A, bptr [0]);

-                bptr [0] = dpp->samples_A [k];

-                m = (m + 1) & (MAX_TERM - 1);

-                k = (k + 1) & (MAX_TERM - 1);

-            }

-

-            if (m) {

-                int32_t temp_samples [MAX_TERM];

-

-                memcpy (temp_samples, dpp->samples_A, sizeof (dpp->samples_A));

-

-                for (k = 0; k < MAX_TERM; k++, m++)

-                    dpp->samples_A [k] = temp_samples [m & (MAX_TERM - 1)];

-            }

-

-            break;

-    }

-

-    dpp->weight_A = weight_A;

-}

-

-

-// This is a helper function for unpack_samples() that applies several final

-// operations. First, if the data is 32-bit float data, then that conversion

-// is done in the float.c module (whether lossy or lossless) and we return.

-// Otherwise, if the extended integer data applies, then that operation is

-// executed first. If the unpacked data is lossy (and not corrected) then

-// it is clipped and shifted in a single operation. Otherwise, if it's

-// lossless then the last step is to apply the final shift (if any).

-

-static void fixup_samples (WavpackStream *wps, int32_t *buffer, uint32_t sample_count)

-{

-    uint32_t flags = wps->wphdr.flags;

-    int shift = (flags & SHIFT_MASK) >> SHIFT_LSB;

-

-    if (flags & FLOAT_DATA) {

-        float_values (wps, buffer, (flags & MONO_FLAG) ? sample_count : sample_count * 2);

-        return;

-    }

-

-    if (flags & INT32_DATA) {

-        uint32_t count = (flags & MONO_FLAG) ? sample_count : sample_count * 2;

-        int sent_bits = wps->int32_sent_bits, zeros = wps->int32_zeros;

-        int ones = wps->int32_ones, dups = wps->int32_dups;

-        int32_t *dptr = buffer;

-

-        if (!(flags & HYBRID_FLAG) && !sent_bits && (zeros + ones + dups))

-            while (count--) {

-                if (zeros)

-                    *dptr <<= zeros;

-                else if (ones)

-                    *dptr = ((*dptr + 1) << ones) - 1;

-                else if (dups)

-                    *dptr = ((*dptr + (*dptr & 1)) << dups) - (*dptr & 1);

-

-                dptr++;

-            }

-        else

-            shift += zeros + sent_bits + ones + dups;

-    }

-

-    if (flags & HYBRID_FLAG) {

-        int32_t min_value, max_value, min_shifted, max_shifted;

-

-        switch (flags & BYTES_STORED) {

-            case 0:

-                min_shifted = (min_value = -128 >> shift) << shift;

-                max_shifted = (max_value = 127 >> shift) << shift;

-                break;

-

-            case 1:

-                min_shifted = (min_value = -32768 >> shift) << shift;

-                max_shifted = (max_value = 32767 >> shift) << shift;

-                break;

-

-            case 2:

-                min_shifted = (min_value = -8388608 >> shift) << shift;

-                max_shifted = (max_value = 8388607 >> shift) << shift;

-                break;

-

-            case 3:

-            default:

-                min_shifted = (min_value = (int32_t) 0x80000000 >> shift) << shift;

-                max_shifted = (max_value = (int32_t) 0x7FFFFFFF >> shift) << shift;

-                break;

-        }

-

-        if (!(flags & MONO_FLAG))

-            sample_count *= 2;

-

-        while (sample_count--) {

-            if (*buffer < min_value)

-                *buffer++ = min_shifted;

-            else if (*buffer > max_value)

-                *buffer++ = max_shifted;

-            else

-                *buffer++ <<= shift;

-        }

-    }

-    else if (shift) {

-        if (!(flags & MONO_FLAG))

-            sample_count *= 2;

-

-        while (sample_count--)

-            *buffer++ <<= shift;

-    }

-}

-

-// This function checks the crc value(s) for an unpacked block, returning the

-// number of actual crc errors detected for the block. The block must be

-// completely unpacked before this test is valid. For losslessly unpacked

-// blocks of float or extended integer data the extended crc is also checked.

-// Note that WavPack's crc is not a CCITT approved polynomial algorithm, but

-// is a much simpler method that is virtually as robust for real world data.

-

-int check_crc_error (WavpackContext *wpc)

-{

-    WavpackStream *wps = &wpc->stream;

-    int result = 0;

-

-    if (wps->crc != wps->wphdr.crc)

-        ++result;

-

-    return result;

-}

diff --git a/src/wavpack/wavpack.h b/src/wavpack/wavpack.h
deleted file mode 100644
index 7c260586..00000000
--- a/src/wavpack/wavpack.h
+++ /dev/null
@@ -1,384 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2004 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-// wavpack.h

-

-#include <sys/types.h>

-

-// This header file contains all the definitions required by WavPack.

-

-#ifdef __BORLANDC__

-typedef unsigned long uint32_t;

-typedef long int32_t;

-#elif defined(_WIN32) && !defined(__MINGW32__)

-#include <stdlib.h>

-typedef unsigned __int64 uint64_t;

-typedef unsigned __int32 uint32_t;

-typedef __int64 int64_t;

-typedef __int32 int32_t;

-#else

-#include <inttypes.h>

-#endif

-

-typedef unsigned char   uchar;

-

-#if !defined(__GNUC__) || defined(WIN32)

-typedef unsigned short  ushort;

-typedef unsigned int    uint;

-#endif

-

-#include <stdio.h>

-

-#define FALSE 0

-#define TRUE 1

-

-////////////////////////////// WavPack Header /////////////////////////////////

-

-// Note that this is the ONLY structure that is written to (or read from)

-// WavPack 4.0 files, and is the preamble to every block in both the .wv

-// and .wvc files.

-

-typedef struct {

-    char ckID [4];

-    uint32_t ckSize;

-    short version;

-    uchar track_no, index_no;

-    uint32_t total_samples, block_index, block_samples, flags, crc;

-} WavpackHeader;

-

-#define WavpackHeaderFormat "4LS2LLLLL"

-

-// or-values for "flags"

-

-#define BYTES_STORED    3       // 1-4 bytes/sample

-#define MONO_FLAG       4       // not stereo

-#define HYBRID_FLAG     8       // hybrid mode

-#define JOINT_STEREO    0x10    // joint stereo

-#define CROSS_DECORR    0x20    // no-delay cross decorrelation

-#define HYBRID_SHAPE    0x40    // noise shape (hybrid mode only)

-#define FLOAT_DATA      0x80    // ieee 32-bit floating point data

-

-#define INT32_DATA      0x100   // special extended int handling

-#define HYBRID_BITRATE  0x200   // bitrate noise (hybrid mode only)

-#define HYBRID_BALANCE  0x400   // balance noise (hybrid stereo mode only)

-

-#define INITIAL_BLOCK   0x800   // initial block of multichannel segment

-#define FINAL_BLOCK     0x1000  // final block of multichannel segment

-

-#define SHIFT_LSB       13

-#define SHIFT_MASK      (0x1fL << SHIFT_LSB)

-

-#define MAG_LSB         18

-#define MAG_MASK        (0x1fL << MAG_LSB)

-

-#define SRATE_LSB       23

-#define SRATE_MASK      (0xfL << SRATE_LSB)

-

-#define FALSE_STEREO    0x40000000      // block is stereo, but data is mono

-

-#define IGNORED_FLAGS   0x18000000      // reserved, but ignore if encountered

-#define NEW_SHAPING     0x20000000      // use IIR filter for negative shaping

-#define UNKNOWN_FLAGS   0x80000000      // also reserved, but refuse decode if

-                                        //  encountered

-

-#define MONO_DATA (MONO_FLAG | FALSE_STEREO)

-

-#define MIN_STREAM_VERS     0x402       // lowest stream version we'll decode

-#define MAX_STREAM_VERS     0x410       // highest stream version we'll decode

-

-//////////////////////////// WavPack Metadata /////////////////////////////////

-

-// This is an internal representation of metadata.

-

-typedef struct {

-    int32_t byte_length;

-    void *data;

-    uchar id;

-} WavpackMetadata;

-

-#define ID_OPTIONAL_DATA        0x20

-#define ID_ODD_SIZE             0x40

-#define ID_LARGE                0x80

-

-#define ID_DUMMY                0x0

-#define ID_ENCODER_INFO         0x1

-#define ID_DECORR_TERMS         0x2

-#define ID_DECORR_WEIGHTS       0x3

-#define ID_DECORR_SAMPLES       0x4

-#define ID_ENTROPY_VARS         0x5

-#define ID_HYBRID_PROFILE       0x6

-#define ID_SHAPING_WEIGHTS      0x7

-#define ID_FLOAT_INFO           0x8

-#define ID_INT32_INFO           0x9

-#define ID_WV_BITSTREAM         0xa

-#define ID_WVC_BITSTREAM        0xb

-#define ID_WVX_BITSTREAM        0xc

-#define ID_CHANNEL_INFO         0xd

-

-#define ID_RIFF_HEADER          (ID_OPTIONAL_DATA | 0x1)

-#define ID_RIFF_TRAILER         (ID_OPTIONAL_DATA | 0x2)

-#define ID_REPLAY_GAIN          (ID_OPTIONAL_DATA | 0x3)

-#define ID_CUESHEET             (ID_OPTIONAL_DATA | 0x4)

-#define ID_CONFIG_BLOCK         (ID_OPTIONAL_DATA | 0x5)

-#define ID_MD5_CHECKSUM         (ID_OPTIONAL_DATA | 0x6)

-

-///////////////////////// WavPack Configuration ///////////////////////////////

-

-// This internal structure is used during encode to provide configuration to

-// the encoding engine and during decoding to provide fle information back to

-// the higher level functions. Not all fields are used in both modes.

-

-typedef struct {

-    int bits_per_sample, bytes_per_sample;

-    int num_channels, float_norm_exp;

-    uint32_t flags, sample_rate, channel_mask;

-} WavpackConfig;

-

-#define CONFIG_BYTES_STORED     3       // 1-4 bytes/sample

-#define CONFIG_MONO_FLAG        4       // not stereo

-#define CONFIG_HYBRID_FLAG      8       // hybrid mode

-#define CONFIG_JOINT_STEREO     0x10    // joint stereo

-#define CONFIG_CROSS_DECORR     0x20    // no-delay cross decorrelation

-#define CONFIG_HYBRID_SHAPE     0x40    // noise shape (hybrid mode only)

-#define CONFIG_FLOAT_DATA       0x80    // ieee 32-bit floating point data

-

-#define CONFIG_FAST_FLAG        0x200   // fast mode

-#define CONFIG_HIGH_FLAG        0x800   // high quality mode

-#define CONFIG_VERY_HIGH_FLAG   0x1000  // very high

-#define CONFIG_BITRATE_KBPS     0x2000  // bitrate is kbps, not bits / sample

-#define CONFIG_AUTO_SHAPING     0x4000  // automatic noise shaping

-#define CONFIG_SHAPE_OVERRIDE   0x8000  // shaping mode specified

-#define CONFIG_JOINT_OVERRIDE   0x10000 // joint-stereo mode specified

-#define CONFIG_CREATE_EXE       0x40000 // create executable

-#define CONFIG_CREATE_WVC       0x80000 // create correction file

-#define CONFIG_OPTIMIZE_WVC     0x100000 // maximize bybrid compression

-#define CONFIG_CALC_NOISE       0x800000 // calc noise in hybrid mode

-#define CONFIG_LOSSY_MODE       0x1000000 // obsolete (for information)

-#define CONFIG_EXTRA_MODE       0x2000000 // extra processing mode

-#define CONFIG_SKIP_WVX         0x4000000 // no wvx stream w/ floats & big ints

-#define CONFIG_MD5_CHECKSUM     0x8000000 // compute & store MD5 signature

-#define CONFIG_OPTIMIZE_MONO    0x80000000 // optimize for mono streams posing as stereo

-

-//////////////////////////////// WavPack Stream ///////////////////////////////

-

-// This internal structure contains everything required to handle a WavPack

-// "stream", which is defined as a stereo or mono stream of audio samples. For

-// multichannel audio several of these would be required. Each stream contains

-// pointers to hold a complete allocated block of WavPack data, although it's

-// possible to decode WavPack blocks without buffering an entire block.

-

-typedef int32_t (*read_stream)(void *, int32_t);

-

-typedef struct bs {

-    uchar *buf, *end, *ptr;

-    void (*wrap)(struct bs *bs);

-    uint32_t file_bytes, sr;

-    int error, bc;

-    read_stream file;

-} Bitstream;

-

-#define MAX_NTERMS 16

-#define MAX_TERM 8

-

-struct decorr_pass {

-    short term, delta, weight_A, weight_B;

-    int32_t samples_A [MAX_TERM], samples_B [MAX_TERM];

-};

-

-struct entropy_data {

-    uint32_t median [3], slow_level, error_limit;

-};

-

-struct words_data {

-    uint32_t bitrate_delta [2], bitrate_acc [2];

-    uint32_t pend_data, holding_one, zeros_acc;

-    int holding_zero, pend_count;

-    struct entropy_data c [2];

-};

-

-typedef struct {

-    WavpackHeader wphdr;

-    Bitstream wvbits;

-

-    struct words_data w;

-

-    int num_terms, mute_error;

-    uint32_t sample_index, crc;

-

-    uchar int32_sent_bits, int32_zeros, int32_ones, int32_dups;

-    uchar float_flags, float_shift, float_max_exp, float_norm_exp;

- 

-    struct decorr_pass decorr_passes [MAX_NTERMS];

-

-} WavpackStream;

-

-// flags for float_flags:

-

-#define FLOAT_SHIFT_ONES 1      // bits left-shifted into float = '1'

-#define FLOAT_SHIFT_SAME 2      // bits left-shifted into float are the same

-#define FLOAT_SHIFT_SENT 4      // bits shifted into float are sent literally

-#define FLOAT_ZEROS_SENT 8      // "zeros" are not all real zeros

-#define FLOAT_NEG_ZEROS  0x10   // contains negative zeros

-#define FLOAT_EXCEPTIONS 0x20   // contains exceptions (inf, nan, etc.)

-

-/////////////////////////////// WavPack Context ///////////////////////////////

-

-// This internal structure holds everything required to encode or decode WavPack

-// files. It is recommended that direct access to this structure be minimized

-// and the provided utilities used instead.

-

-typedef struct {

-    WavpackConfig config;

-    WavpackStream stream;

-

-    uchar read_buffer [1024];

-    char error_message [80];

-

-    read_stream infile;

-    uint32_t total_samples, crc_errors, first_flags;

-    int open_flags, norm_offset, reduced_channels, lossy_blocks;

-

-} WavpackContext;

-

-//////////////////////// function prototypes and macros //////////////////////

-

-#define CLEAR(destin) memset (&destin, 0, sizeof (destin));

-

-// bits.c

-

-void bs_open_read (Bitstream *bs, uchar *buffer_start, uchar *buffer_end, read_stream file, uint32_t file_bytes);

-

-#define bs_is_open(bs) ((bs)->ptr != NULL)

-

-#define getbit(bs) ( \

-    (((bs)->bc) ? \

-        ((bs)->bc--, (bs)->sr & 1) : \

-            (((++((bs)->ptr) != (bs)->end) ? (void) 0 : (bs)->wrap (bs)), (bs)->bc = 7, ((bs)->sr = *((bs)->ptr)) & 1) \

-    ) ? \

-        ((bs)->sr >>= 1, 1) : \

-        ((bs)->sr >>= 1, 0) \

-)

-

-#define getbits(value, nbits, bs) { \

-    while ((nbits) > (bs)->bc) { \

-        if (++((bs)->ptr) == (bs)->end) (bs)->wrap (bs); \

-        (bs)->sr |= (int32_t)*((bs)->ptr) << (bs)->bc; \

-        (bs)->bc += 8; \

-    } \

-    *(value) = (bs)->sr; \

-    if ((bs)->bc > 32) { \

-        (bs)->bc -= (nbits); \

-        (bs)->sr = *((bs)->ptr) >> (8 - (bs)->bc); \

-    } \

-    else { \

-        (bs)->bc -= (nbits); \

-        (bs)->sr >>= (nbits); \

-    } \

-}

-

-void little_endian_to_native (void *data, char *format);

-void native_to_little_endian (void *data, char *format);

-

-// These macros implement the weight application and update operations

-// that are at the heart of the decorrelation loops. Note that when there

-// are several alternative versions of the same macro (marked with PERFCOND)

-// then the versions are functionally equivalent with respect to WavPack

-// decoding and the user should choose the one that provides the best

-// performance. This may be easier to check when NOT using the assembly

-// language optimizations.

-

-#if 1   // PERFCOND

-#define apply_weight_i(weight, sample) ((weight * sample + 512) >> 10)

-#else

-#define apply_weight_i(weight, sample) ((((weight * sample) >> 8) + 2) >> 2)

-#endif

-

-#define apply_weight_f(weight, sample) (((((sample & 0xffffL) * weight) >> 9) + \

-    (((sample & ~0xffffL) >> 9) * weight) + 1) >> 1)

-

-#if 1   // PERFCOND

-#define apply_weight(weight, sample) (sample != (short) sample ? \

-    apply_weight_f (weight, sample) : apply_weight_i (weight, sample))

-#else

-#define apply_weight(weight, sample) ((int32_t)((weight * (int64_t) sample + 512) >> 10))

-#endif

-

-#if 0   // PERFCOND

-#define update_weight(weight, delta, source, result) \

-    if (source && result) { int32_t s = (int32_t) (source ^ result) >> 31; weight = (delta ^ s) + (weight - s); }

-#elif 1

-#define update_weight(weight, delta, source, result) \

-    if (source && result) weight += (((source ^ result) >> 30) | 1) * delta

-#else

-#define update_weight(weight, delta, source, result) \

-    if (source && result) (source ^ result) < 0 ? (weight -= delta) : (weight += delta)

-#endif

-

-#define update_weight_clip(weight, delta, source, result) \

-    if (source && result && ((source ^ result) < 0 ? (weight -= delta) < -1024 : (weight += delta) > 1024)) \

-        weight = weight < 0 ? -1024 : 1024

-

-// unpack.c

-

-int unpack_init (WavpackContext *wpc);

-int init_wv_bitstream (WavpackContext *wpc, WavpackMetadata *wpmd);

-int read_decorr_terms (WavpackStream *wps, WavpackMetadata *wpmd);

-int read_decorr_weights (WavpackStream *wps, WavpackMetadata *wpmd);

-int read_decorr_samples (WavpackStream *wps, WavpackMetadata *wpmd);

-int read_float_info (WavpackStream *wps, WavpackMetadata *wpmd);

-int read_int32_info (WavpackStream *wps, WavpackMetadata *wpmd);

-int read_channel_info (WavpackContext *wpc, WavpackMetadata *wpmd);

-int read_config_info (WavpackContext *wpc, WavpackMetadata *wpmd);

-int32_t unpack_samples (WavpackContext *wpc, int32_t *buffer, uint32_t sample_count);

-int check_crc_error (WavpackContext *wpc);

-

-// metadata.c stuff

-

-int read_metadata_buff (WavpackContext *wpc, WavpackMetadata *wpmd);

-int process_metadata (WavpackContext *wpc, WavpackMetadata *wpmd);

-

-// words.c stuff

-

-int read_entropy_vars (WavpackStream *wps, WavpackMetadata *wpmd);

-int read_hybrid_profile (WavpackStream *wps, WavpackMetadata *wpmd);

-int32_t get_words (int32_t *buffer, int nsamples, uint32_t flags,

-                struct words_data *w, Bitstream *bs);

-int32_t exp2s (int log);

-int restore_weight (signed char weight);

-

-#define WORD_EOF (1L << 31)

-

-// float.c

-

-int read_float_info (WavpackStream *wps, WavpackMetadata *wpmd);

-void float_values (WavpackStream *wps, int32_t *values, int32_t num_values);

-

-// wputils.c

-

-WavpackContext *WavpackOpenFileInput (read_stream infile, char *error);

-

-int WavpackGetMode (WavpackContext *wpc);

-

-#define MODE_WVC        0x1

-#define MODE_LOSSLESS   0x2

-#define MODE_HYBRID     0x4

-#define MODE_FLOAT      0x8

-#define MODE_VALID_TAG  0x10

-#define MODE_HIGH       0x20

-#define MODE_FAST       0x40

-

-uint32_t WavpackUnpackSamples (WavpackContext *wpc, int32_t *buffer, uint32_t samples);

-uint32_t WavpackGetNumSamples (WavpackContext *wpc);

-uint32_t WavpackGetSampleIndex (WavpackContext *wpc);

-int WavpackGetNumErrors (WavpackContext *wpc);

-int WavpackLossyBlocks (WavpackContext *wpc);

-uint32_t WavpackGetSampleRate (WavpackContext *wpc);

-int WavpackGetBitsPerSample (WavpackContext *wpc);

-int WavpackGetBytesPerSample (WavpackContext *wpc);

-int WavpackGetNumChannels (WavpackContext *wpc);

-int WavpackGetReducedChannels (WavpackContext *wpc);

diff --git a/src/wavpack/words.c b/src/wavpack/words.c
deleted file mode 100644
index 0e5a3db7..00000000
--- a/src/wavpack/words.c
+++ /dev/null
@@ -1,560 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-// words.c

-

-// This module provides entropy word encoding and decoding functions using

-// a variation on the Rice method.  This was introduced in version 3.93

-// because it allows splitting the data into a "lossy" stream and a

-// "correction" stream in a very efficient manner and is therefore ideal

-// for the "hybrid" mode.  For 4.0, the efficiency of this method was

-// significantly improved by moving away from the normal Rice restriction of

-// using powers of two for the modulus divisions and now the method can be

-// used for both hybrid and pure lossless encoding.

-

-// Samples are divided by median probabilities at 5/7 (71.43%), 10/49 (20.41%),

-// and 20/343 (5.83%). Each zone has 3.5 times fewer samples than the

-// previous. Using standard Rice coding on this data would result in 1.4

-// bits per sample average (not counting sign bit). However, there is a

-// very simple encoding that is over 99% efficient with this data and

-// results in about 1.22 bits per sample.

-

-#include "wavpack.h"

-

-#include <string.h>

-

-//////////////////////////////// local macros /////////////////////////////////

-

-#define LIMIT_ONES 16   // maximum consecutive 1s sent for "div" data

-

-// these control the time constant "slow_level" which is used for hybrid mode

-// that controls bitrate as a function of residual level (HYBRID_BITRATE).

-#define SLS 8

-#define SLO ((1 << (SLS - 1)))

-

-// these control the time constant of the 3 median level breakpoints

-#define DIV0 128        // 5/7 of samples

-#define DIV1 64         // 10/49 of samples

-#define DIV2 32         // 20/343 of samples

-

-// this macro retrieves the specified median breakpoint (without frac; min = 1)

-#define GET_MED(med) (((c->median [med]) >> 4) + 1)

-

-// These macros update the specified median breakpoints. Note that the median

-// is incremented when the sample is higher than the median, else decremented.

-// They are designed so that the median will never drop below 1 and the value

-// is essentially stationary if there are 2 increments for every 5 decrements.

-

-#define INC_MED0() (c->median [0] += ((c->median [0] + DIV0) / DIV0) * 5)

-#define DEC_MED0() (c->median [0] -= ((c->median [0] + (DIV0-2)) / DIV0) * 2)

-#define INC_MED1() (c->median [1] += ((c->median [1] + DIV1) / DIV1) * 5)

-#define DEC_MED1() (c->median [1] -= ((c->median [1] + (DIV1-2)) / DIV1) * 2)

-#define INC_MED2() (c->median [2] += ((c->median [2] + DIV2) / DIV2) * 5)

-#define DEC_MED2() (c->median [2] -= ((c->median [2] + (DIV2-2)) / DIV2) * 2)

-

-#define count_bits(av) ( \

- (av) < (1 << 8) ? nbits_table [av] : \

-  ( \

-   (av) < (1L << 16) ? nbits_table [(av) >> 8] + 8 : \

-   ((av) < (1L << 24) ? nbits_table [(av) >> 16] + 16 : nbits_table [(av) >> 24] + 24) \

-  ) \

-)

-

-///////////////////////////// local table storage ////////////////////////////

-

-const char nbits_table [] = {

-    0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,     // 0 - 15

-    5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,     // 16 - 31

-    6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,     // 32 - 47

-    6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,     // 48 - 63

-    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,     // 64 - 79

-    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,     // 80 - 95

-    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,     // 96 - 111

-    7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,     // 112 - 127

-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,     // 128 - 143

-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,     // 144 - 159

-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,     // 160 - 175

-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,     // 176 - 191

-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,     // 192 - 207

-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,     // 208 - 223

-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,     // 224 - 239

-    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8      // 240 - 255

-};

-

-static const uchar log2_table [] = {

-    0x00, 0x01, 0x03, 0x04, 0x06, 0x07, 0x09, 0x0a, 0x0b, 0x0d, 0x0e, 0x10, 0x11, 0x12, 0x14, 0x15,

-    0x16, 0x18, 0x19, 0x1a, 0x1c, 0x1d, 0x1e, 0x20, 0x21, 0x22, 0x24, 0x25, 0x26, 0x28, 0x29, 0x2a,

-    0x2c, 0x2d, 0x2e, 0x2f, 0x31, 0x32, 0x33, 0x34, 0x36, 0x37, 0x38, 0x39, 0x3b, 0x3c, 0x3d, 0x3e,

-    0x3f, 0x41, 0x42, 0x43, 0x44, 0x45, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4d, 0x4e, 0x4f, 0x50, 0x51,

-    0x52, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63,

-    0x64, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x74, 0x75,

-    0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85,

-    0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95,

-    0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4,

-    0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb2,

-    0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc0,

-    0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcb, 0xcc, 0xcd, 0xce,

-    0xcf, 0xd0, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd8, 0xd9, 0xda, 0xdb,

-    0xdc, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe4, 0xe5, 0xe6, 0xe7, 0xe7,

-    0xe8, 0xe9, 0xea, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xee, 0xef, 0xf0, 0xf1, 0xf1, 0xf2, 0xf3, 0xf4,

-    0xf4, 0xf5, 0xf6, 0xf7, 0xf7, 0xf8, 0xf9, 0xf9, 0xfa, 0xfb, 0xfc, 0xfc, 0xfd, 0xfe, 0xff, 0xff

-};

-

-static const uchar exp2_table [] = {

-    0x00, 0x01, 0x01, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x06, 0x07, 0x08, 0x08, 0x09, 0x0a, 0x0b,

-    0x0b, 0x0c, 0x0d, 0x0e, 0x0e, 0x0f, 0x10, 0x10, 0x11, 0x12, 0x13, 0x13, 0x14, 0x15, 0x16, 0x16,

-    0x17, 0x18, 0x19, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1d, 0x1e, 0x1f, 0x20, 0x20, 0x21, 0x22, 0x23,

-    0x24, 0x24, 0x25, 0x26, 0x27, 0x28, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,

-    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3a, 0x3b, 0x3c, 0x3d,

-    0x3e, 0x3f, 0x40, 0x41, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x48, 0x49, 0x4a, 0x4b,

-    0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a,

-    0x5b, 0x5c, 0x5d, 0x5e, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,

-    0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,

-    0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x87, 0x88, 0x89, 0x8a,

-    0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b,

-    0x9c, 0x9d, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad,

-    0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0,

-    0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc8, 0xc9, 0xca, 0xcb, 0xcd, 0xce, 0xcf, 0xd0, 0xd2, 0xd3, 0xd4,

-    0xd6, 0xd7, 0xd8, 0xd9, 0xdb, 0xdc, 0xdd, 0xde, 0xe0, 0xe1, 0xe2, 0xe4, 0xe5, 0xe6, 0xe8, 0xe9,

-    0xea, 0xec, 0xed, 0xee, 0xf0, 0xf1, 0xf2, 0xf4, 0xf5, 0xf6, 0xf8, 0xf9, 0xfa, 0xfc, 0xfd, 0xff

-};

-

-static const char ones_count_table [] = {

-    0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5,

-    0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6,

-    0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5,

-    0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,7,

-    0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5,

-    0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6,

-    0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5,

-    0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,8

-};

-

-///////////////////////////// executable code ////////////////////////////////

-

-void init_words (WavpackStream *wps)

-{

-    CLEAR (wps->w);

-}

-

-static int mylog2 (uint32_t avalue);

-

-// Read the median log2 values from the specifed metadata structure, convert

-// them back to 32-bit unsigned values and store them. If length is not

-// exactly correct then we flag and return an error.

-

-int read_entropy_vars (WavpackStream *wps, WavpackMetadata *wpmd)

-{

-    uchar *byteptr = wpmd->data;

-

-    if (wpmd->byte_length != ((wps->wphdr.flags & MONO_DATA) ? 6 : 12))

-        return FALSE;

-

-    wps->w.c [0].median [0] = exp2s (byteptr [0] + (byteptr [1] << 8));

-    wps->w.c [0].median [1] = exp2s (byteptr [2] + (byteptr [3] << 8));

-    wps->w.c [0].median [2] = exp2s (byteptr [4] + (byteptr [5] << 8));

-

-    if (!(wps->wphdr.flags & MONO_DATA)) {

-        wps->w.c [1].median [0] = exp2s (byteptr [6] + (byteptr [7] << 8));

-        wps->w.c [1].median [1] = exp2s (byteptr [8] + (byteptr [9] << 8));

-        wps->w.c [1].median [2] = exp2s (byteptr [10] + (byteptr [11] << 8));

-    }

-

-    return TRUE;

-}

-

-// Read the hybrid related values from the specifed metadata structure, convert

-// them back to their internal formats and store them. The extended profile

-// stuff is not implemented yet, so return an error if we get more data than

-// we know what to do with.

-

-int read_hybrid_profile (WavpackStream *wps, WavpackMetadata *wpmd)

-{

-    uchar *byteptr = wpmd->data;

-    uchar *endptr = byteptr + wpmd->byte_length;

-

-    if (wps->wphdr.flags & HYBRID_BITRATE) {

-        wps->w.c [0].slow_level = exp2s (byteptr [0] + (byteptr [1] << 8));

-        byteptr += 2;

-

-        if (!(wps->wphdr.flags & MONO_DATA)) {

-            wps->w.c [1].slow_level = exp2s (byteptr [0] + (byteptr [1] << 8));

-            byteptr += 2;

-        }

-    }

-

-    wps->w.bitrate_acc [0] = (int32_t)(byteptr [0] + (byteptr [1] << 8)) << 16;

-    byteptr += 2;

-

-    if (!(wps->wphdr.flags & MONO_DATA)) {

-        wps->w.bitrate_acc [1] = (int32_t)(byteptr [0] + (byteptr [1] << 8)) << 16;

-        byteptr += 2;

-    }

-

-    if (byteptr < endptr) {

-        wps->w.bitrate_delta [0] = exp2s ((short)(byteptr [0] + (byteptr [1] << 8)));

-        byteptr += 2;

-

-        if (!(wps->wphdr.flags & MONO_DATA)) {

-            wps->w.bitrate_delta [1] = exp2s ((short)(byteptr [0] + (byteptr [1] << 8)));

-            byteptr += 2;

-        }

-

-        if (byteptr < endptr)

-            return FALSE;

-    }

-    else

-        wps->w.bitrate_delta [0] = wps->w.bitrate_delta [1] = 0;

-

-    return TRUE;

-}

-

-// This function is called during both encoding and decoding of hybrid data to

-// update the "error_limit" variable which determines the maximum sample error

-// allowed in the main bitstream. In the HYBRID_BITRATE mode (which is the only

-// currently implemented) this is calculated from the slow_level values and the

-// bitrate accumulators. Note that the bitrate accumulators can be changing.

-

-void update_error_limit (struct words_data *w, uint32_t flags)

-{

-    int bitrate_0 = (w->bitrate_acc [0] += w->bitrate_delta [0]) >> 16;

-

-    if (flags & MONO_DATA) {

-        if (flags & HYBRID_BITRATE) {

-            int slow_log_0 = (w->c [0].slow_level + SLO) >> SLS;

-

-            if (slow_log_0 - bitrate_0 > -0x100)

-                w->c [0].error_limit = exp2s (slow_log_0 - bitrate_0 + 0x100);

-            else

-                w->c [0].error_limit = 0;

-        }

-        else

-            w->c [0].error_limit = exp2s (bitrate_0);

-    }

-    else {

-        int bitrate_1 = (w->bitrate_acc [1] += w->bitrate_delta [1]) >> 16;

-

-        if (flags & HYBRID_BITRATE) {

-            int slow_log_0 = (w->c [0].slow_level + SLO) >> SLS;

-            int slow_log_1 = (w->c [1].slow_level + SLO) >> SLS;

-

-            if (flags & HYBRID_BALANCE) {

-                int balance = (slow_log_1 - slow_log_0 + bitrate_1 + 1) >> 1;

-

-                if (balance > bitrate_0) {

-                    bitrate_1 = bitrate_0 * 2;

-                    bitrate_0 = 0;

-                }

-                else if (-balance > bitrate_0) {

-                    bitrate_0 = bitrate_0 * 2;

-                    bitrate_1 = 0;

-                }

-                else {

-                    bitrate_1 = bitrate_0 + balance;

-                    bitrate_0 = bitrate_0 - balance;

-                }

-            }

-

-            if (slow_log_0 - bitrate_0 > -0x100)

-                w->c [0].error_limit = exp2s (slow_log_0 - bitrate_0 + 0x100);

-            else

-                w->c [0].error_limit = 0;

-

-            if (slow_log_1 - bitrate_1 > -0x100)

-                w->c [1].error_limit = exp2s (slow_log_1 - bitrate_1 + 0x100);

-            else

-                w->c [1].error_limit = 0;

-        }

-        else {

-            w->c [0].error_limit = exp2s (bitrate_0);

-            w->c [1].error_limit = exp2s (bitrate_1);

-        }

-    }

-}

-

-static uint32_t read_code (Bitstream *bs, uint32_t maxcode);

-

-// Read the next word from the bitstream "wvbits" and return the value. This

-// function can be used for hybrid or lossless streams, but since an

-// optimized version is available for lossless this function would normally

-// be used for hybrid only. If a hybrid lossless stream is being read then

-// the "correction" offset is written at the specified pointer. A return value

-// of WORD_EOF indicates that the end of the bitstream was reached (all 1s) or

-// some other error occurred.

-

-int32_t get_words (int32_t *buffer, int nsamples, uint32_t flags,

-                struct words_data *w, Bitstream *bs)

-{

-    register struct entropy_data *c = w->c;

-    int csamples;

-

-    if (!(flags & MONO_DATA))

-        nsamples *= 2;

-

-    for (csamples = 0; csamples < nsamples; ++csamples) {

-        uint32_t ones_count, low, mid, high;

-

-        if (!(flags & MONO_DATA))

-            c = w->c + (csamples & 1);

-

-        if (!(w->c [0].median [0] & ~1) && !w->holding_zero && !w->holding_one && !(w->c [1].median [0] & ~1)) {

-            uint32_t mask;

-            int cbits;

-

-            if (w->zeros_acc) {

-                if (--w->zeros_acc) {

-                    c->slow_level -= (c->slow_level + SLO) >> SLS;

-                    *buffer++ = 0;

-                    continue;

-                }

-            }

-            else {

-                for (cbits = 0; cbits < 33 && getbit (bs); ++cbits);

-

-                if (cbits == 33)

-                    break;

-

-                if (cbits < 2)

-                    w->zeros_acc = cbits;

-                else {

-                    for (mask = 1, w->zeros_acc = 0; --cbits; mask <<= 1)

-                        if (getbit (bs))

-                            w->zeros_acc |= mask;

-

-                    w->zeros_acc |= mask;

-                }

-

-                if (w->zeros_acc) {

-                    c->slow_level -= (c->slow_level + SLO) >> SLS;

-                    CLEAR (w->c [0].median);

-                    CLEAR (w->c [1].median);

-                    *buffer++ = 0;

-                    continue;

-                }

-            }

-        }

-

-        if (w->holding_zero)

-            ones_count = w->holding_zero = 0;

-        else {

-            int next8;

-

-            if (bs->bc < 8) {

-                if (++(bs->ptr) == bs->end)

-                    bs->wrap (bs);

-

-                next8 = (bs->sr |= *(bs->ptr) << bs->bc) & 0xff;

-                bs->bc += 8;

-            }

-            else

-                next8 = bs->sr & 0xff;

-

-            if (next8 == 0xff) {

-                bs->bc -= 8;

-                bs->sr >>= 8;

-

-                for (ones_count = 8; ones_count < (LIMIT_ONES + 1) && getbit (bs); ++ones_count);

-

-                if (ones_count == (LIMIT_ONES + 1))

-                    break;

-

-                if (ones_count == LIMIT_ONES) {

-                    uint32_t mask;

-                    int cbits;

-

-                    for (cbits = 0; cbits < 33 && getbit (bs); ++cbits);

-

-                    if (cbits == 33)

-                        break;

-

-                    if (cbits < 2)

-                        ones_count = cbits;

-                    else {

-                        for (mask = 1, ones_count = 0; --cbits; mask <<= 1)

-                            if (getbit (bs))

-                                ones_count |= mask;

-

-                        ones_count |= mask;

-                    }

-

-                    ones_count += LIMIT_ONES;

-                }

-            }

-            else {

-                bs->bc -= (ones_count = ones_count_table [next8]) + 1;

-                bs->sr >>= ones_count + 1;

-            }

-

-            if (w->holding_one) {

-                w->holding_one = ones_count & 1;

-                ones_count = (ones_count >> 1) + 1;

-            }

-            else {

-                w->holding_one = ones_count & 1;

-                ones_count >>= 1;

-            }

-

-            w->holding_zero = ~w->holding_one & 1;

-        }

-

-        if ((flags & HYBRID_FLAG) && ((flags & MONO_DATA) || !(csamples & 1)))

-            update_error_limit (w, flags);

-

-        if (ones_count == 0) {

-            low = 0;

-            high = GET_MED (0) - 1;

-            DEC_MED0 ();

-        }

-        else {

-            low = GET_MED (0);

-            INC_MED0 ();

-

-            if (ones_count == 1) {

-                high = low + GET_MED (1) - 1;

-                DEC_MED1 ();

-            }

-            else {

-                low += GET_MED (1);

-                INC_MED1 ();

-

-                if (ones_count == 2) {

-                    high = low + GET_MED (2) - 1;

-                    DEC_MED2 ();

-                }

-                else {

-                    low += (ones_count - 2) * GET_MED (2);

-                    high = low + GET_MED (2) - 1;

-                    INC_MED2 ();

-                }

-            }

-        }

-

-        mid = (high + low + 1) >> 1;

-

-        if (!c->error_limit)

-            mid = read_code (bs, high - low) + low;

-        else while (high - low > c->error_limit) {

-            if (getbit (bs))

-                mid = (high + (low = mid) + 1) >> 1;

-            else

-                mid = ((high = mid - 1) + low + 1) >> 1;

-        }

-

-        *buffer++ = getbit (bs) ? ~mid : mid;

-

-        if (flags & HYBRID_BITRATE)

-            c->slow_level = c->slow_level - ((c->slow_level + SLO) >> SLS) + mylog2 (mid);

-    }

-

-    return (flags & MONO_DATA) ? csamples : (csamples / 2);

-}

-

-// Read a single unsigned value from the specified bitstream with a value

-// from 0 to maxcode. If there are exactly a power of two number of possible

-// codes then this will read a fixed number of bits; otherwise it reads the

-// minimum number of bits and then determines whether another bit is needed

-// to define the code.

-

-static uint32_t read_code (Bitstream *bs, uint32_t maxcode)

-{

-    int bitcount = count_bits (maxcode);

-    uint32_t extras = (1L << bitcount) - maxcode - 1, code;

-

-    if (!bitcount)

-        return 0;

-

-    getbits (&code, bitcount - 1, bs);

-    code &= (1L << (bitcount - 1)) - 1;

-

-    if (code >= extras) {

-        code = (code << 1) - extras;

-

-        if (getbit (bs))

-            ++code;

-    }

-

-    return code;

-}

-

-// The concept of a base 2 logarithm is used in many parts of WavPack. It is

-// a way of sufficiently accurately representing 32-bit signed and unsigned

-// values storing only 16 bits (actually fewer). It is also used in the hybrid

-// mode for quickly comparing the relative magnitude of large values (i.e.

-// division) and providing smooth exponentials using only addition.

-

-// These are not strict logarithms in that they become linear around zero and

-// can therefore represent both zero and negative values. They have 8 bits

-// of precision and in "roundtrip" conversions the total error never exceeds 1

-// part in 225 except for the cases of +/-115 and +/-195 (which error by 1).

-

-

-// This function returns the log2 for the specified 32-bit unsigned value.

-// The maximum value allowed is about 0xff800000 and returns 8447.

-

-static int mylog2 (uint32_t avalue)

-{

-    int dbits;

-

-    if ((avalue += avalue >> 9) < (1 << 8)) {

-        dbits = nbits_table [avalue];

-        return (dbits << 8) + log2_table [(avalue << (9 - dbits)) & 0xff];

-    }

-    else {

-        if (avalue < (1L << 16))

-            dbits = nbits_table [avalue >> 8] + 8;

-        else if (avalue < (1L << 24))

-            dbits = nbits_table [avalue >> 16] + 16;

-        else

-            dbits = nbits_table [avalue >> 24] + 24;

-

-        return (dbits << 8) + log2_table [(avalue >> (dbits - 9)) & 0xff];

-    }

-}

-

-// This function returns the log2 for the specified 32-bit signed value.

-// All input values are valid and the return values are in the range of

-// +/- 8192.

-

-int log2s (int32_t value)

-{

-    return (value < 0) ? -mylog2 (-value) : mylog2 (value);

-}

-

-// This function returns the original integer represented by the supplied

-// logarithm (at least within the provided accuracy). The log is signed,

-// but since a full 32-bit value is returned this can be used for unsigned

-// conversions as well (i.e. the input range is -8192 to +8447).

-

-int32_t exp2s (int log)

-{

-    uint32_t value;

-

-    if (log < 0)

-        return -exp2s (-log);

-

-    value = exp2_table [log & 0xff] | 0x100;

-

-    if ((log >>= 8) <= 9)

-        return value >> (9 - log);

-    else

-        return value << (log - 9);

-}

-

-// These two functions convert internal weights (which are normally +/-1024)

-// to and from an 8-bit signed character version for storage in metadata. The

-// weights are clipped here in the case that they are outside that range.

-

-int restore_weight (signed char weight)

-{

-    int result;

-

-    if ((result = (int) weight << 3) > 0)

-        result += (result + 64) >> 7;

-

-    return result;

-}

diff --git a/src/wavpack/wputils.c b/src/wavpack/wputils.c
deleted file mode 100644
index 0d71af53..00000000
--- a/src/wavpack/wputils.c
+++ /dev/null
@@ -1,351 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-// wputils.c

-

-// This module provides a high-level interface for decoding WavPack 4.0 audio

-// streams and files. WavPack data is read with a stream reading callback. No

-// direct seeking is provided for, but it is possible to start decoding

-// anywhere in a WavPack stream. In this case, WavPack will be able to provide

-// the sample-accurate position when it synchs with the data and begins

-// decoding.

-

-#include "wavpack.h"

-

-#include <string.h>

-

-///////////////////////////// local table storage ////////////////////////////

-

-const uint32_t sample_rates [] = { 6000, 8000, 9600, 11025, 12000, 16000, 22050,

-    24000, 32000, 44100, 48000, 64000, 88200, 96000, 192000 };

-

-///////////////////////////// executable code ////////////////////////////////

-

-static uint32_t read_next_header (read_stream infile, WavpackHeader *wphdr);

-        

-// This function reads data from the specified stream in search of a valid

-// WavPack 4.0 audio block. If this fails in 1 megabyte (or an invalid or

-// unsupported WavPack block is encountered) then an appropriate message is

-// copied to "error" and NULL is returned, otherwise a pointer to a

-// WavpackContext structure is returned (which is used to call all other

-// functions in this module). This can be initiated at the beginning of a

-// WavPack file, or anywhere inside a WavPack file. To determine the exact

-// position within the file use WavpackGetSampleIndex(). For demonstration

-// purposes this uses a single static copy of the WavpackContext structure,

-// so obviously it cannot be used for more than one file at a time. Also,

-// this function will not handle "correction" files, plays only the first

-// two channels of multi-channel files, and is limited in resolution in some

-// large integer or floating point files (but always provides at least 24 bits

-// of resolution).

-

-static WavpackContext wpc;

-

-WavpackContext *WavpackOpenFileInput (read_stream infile, char *error)

-{

-    WavpackStream *wps = &wpc.stream;

-    uint32_t bcount;

-

-    CLEAR (wpc);

-    wpc.infile = infile;

-    wpc.total_samples = (uint32_t) -1;

-    wpc.norm_offset = 0;

-    wpc.open_flags = 0;

-

-    // open the source file for reading and store the size

-

-    while (!wps->wphdr.block_samples) {

-

-        bcount = read_next_header (wpc.infile, &wps->wphdr);

-

-        if (bcount == (uint32_t) -1) {

-            strcpy (error, "not compatible with this version of WavPack file!");

-            return NULL;

-        }

-

-        if (wps->wphdr.block_samples && wps->wphdr.total_samples != (uint32_t) -1)

-            wpc.total_samples = wps->wphdr.total_samples;

-

-        if (!unpack_init (&wpc)) {

-            strcpy (error, wpc.error_message [0] ? wpc.error_message :

-                "not compatible with this version of WavPack file!");

-

-            return NULL;

-        }

-    }

-

-    wpc.config.flags &= ~0xff;

-    wpc.config.flags |= wps->wphdr.flags & 0xff;

-    wpc.config.bytes_per_sample = (wps->wphdr.flags & BYTES_STORED) + 1;

-    wpc.config.float_norm_exp = wps->float_norm_exp;

-

-    wpc.config.bits_per_sample = (wpc.config.bytes_per_sample * 8) - 

-        ((wps->wphdr.flags & SHIFT_MASK) >> SHIFT_LSB);

-

-    if (wpc.config.flags & FLOAT_DATA) {

-        wpc.config.bytes_per_sample = 3;

-        wpc.config.bits_per_sample = 24;

-    }

-

-    if (!wpc.config.sample_rate) {

-        if (!wps || !wps->wphdr.block_samples || (wps->wphdr.flags & SRATE_MASK) == SRATE_MASK)

-            wpc.config.sample_rate = 44100;

-        else

-            wpc.config.sample_rate = sample_rates [(wps->wphdr.flags & SRATE_MASK) >> SRATE_LSB];

-    }

-

-    if (!wpc.config.num_channels) {

-        wpc.config.num_channels = (wps->wphdr.flags & MONO_FLAG) ? 1 : 2;

-        wpc.config.channel_mask = 0x5 - wpc.config.num_channels;

-    }

-

-    if (!(wps->wphdr.flags & FINAL_BLOCK))

-        wpc.reduced_channels = (wps->wphdr.flags & MONO_FLAG) ? 1 : 2;

-

-    return &wpc;

-}

-

-// This function obtains general information about an open file and returns

-// a mask with the following bit values:

-

-// MODE_LOSSLESS:  file is lossless (pure lossless only)

-// MODE_HYBRID:  file is hybrid mode (lossy part only)

-// MODE_FLOAT:  audio data is 32-bit ieee floating point (but will provided

-//               in 24-bit integers for convenience)

-// MODE_HIGH:  file was created in "high" mode (information only)

-// MODE_FAST:  file was created in "fast" mode (information only)

-

-int WavpackGetMode (WavpackContext *wpc)

-{

-    int mode = 0;

-

-    if (wpc) {

-        if (wpc->config.flags & CONFIG_HYBRID_FLAG)

-            mode |= MODE_HYBRID;

-        else if (!(wpc->config.flags & CONFIG_LOSSY_MODE))

-            mode |= MODE_LOSSLESS;

-

-        if (wpc->lossy_blocks)

-            mode &= ~MODE_LOSSLESS;

-

-        if (wpc->config.flags & CONFIG_FLOAT_DATA)

-            mode |= MODE_FLOAT;

-

-        if (wpc->config.flags & CONFIG_HIGH_FLAG)

-            mode |= MODE_HIGH;

-

-        if (wpc->config.flags & CONFIG_FAST_FLAG)

-            mode |= MODE_FAST;

-    }

-

-    return mode;

-}

-

-// Unpack the specified number of samples from the current file position.

-// Note that "samples" here refers to "complete" samples, which would be

-// 2 longs for stereo files. The audio data is returned right-justified in

-// 32-bit longs in the endian mode native to the executing processor. So,

-// if the original data was 16-bit, then the values returned would be

-// +/-32k. Floating point data will be returned as 24-bit integers (and may

-// also be clipped). The actual number of samples unpacked is returned,

-// which should be equal to the number requested unless the end of fle is

-// encountered or an error occurs.

-

-uint32_t WavpackUnpackSamples (WavpackContext *wpc, int32_t *buffer, uint32_t samples)

-{

-    WavpackStream *wps = &wpc->stream;

-    uint32_t bcount, samples_unpacked = 0, samples_to_unpack;

-    int num_channels = wpc->config.num_channels;

-

-    while (samples) {

-        if (!wps->wphdr.block_samples || !(wps->wphdr.flags & INITIAL_BLOCK) ||

-            wps->sample_index >= wps->wphdr.block_index + wps->wphdr.block_samples) {

-                bcount = read_next_header (wpc->infile, &wps->wphdr);

-

-                if (bcount == (uint32_t) -1)

-                    break;

-

-                if (!wps->wphdr.block_samples || wps->sample_index == wps->wphdr.block_index)

-                    if (!unpack_init (wpc))

-                        break;

-        }

-

-        if (!wps->wphdr.block_samples || !(wps->wphdr.flags & INITIAL_BLOCK) ||

-            wps->sample_index >= wps->wphdr.block_index + wps->wphdr.block_samples)

-                continue;

-

-        if (wps->sample_index < wps->wphdr.block_index) {

-            samples_to_unpack = wps->wphdr.block_index - wps->sample_index;

-

-            if (samples_to_unpack > samples)

-                samples_to_unpack = samples;

-

-            wps->sample_index += samples_to_unpack;

-            samples_unpacked += samples_to_unpack;

-            samples -= samples_to_unpack;

-

-            if (wpc->reduced_channels)

-                samples_to_unpack *= wpc->reduced_channels;

-            else

-                samples_to_unpack *= num_channels;

-

-            while (samples_to_unpack--)

-                *buffer++ = 0;

-

-            continue;

-        }

-

-        samples_to_unpack = wps->wphdr.block_index + wps->wphdr.block_samples - wps->sample_index;

-

-        if (samples_to_unpack > samples)

-            samples_to_unpack = samples;

-

-        unpack_samples (wpc, buffer, samples_to_unpack);

-

-        if (wpc->reduced_channels)

-            buffer += samples_to_unpack * wpc->reduced_channels;

-        else

-            buffer += samples_to_unpack * num_channels;

-

-        samples_unpacked += samples_to_unpack;

-        samples -= samples_to_unpack;

-

-        if (wps->sample_index == wps->wphdr.block_index + wps->wphdr.block_samples) {

-            if (check_crc_error (wpc))

-                wpc->crc_errors++;

-        }

-

-        if (wps->sample_index == wpc->total_samples)

-            break;

-    }

-

-    return samples_unpacked;

-}

-

-// Get total number of samples contained in the WavPack file, or -1 if unknown

-

-uint32_t WavpackGetNumSamples (WavpackContext *wpc)

-{

-    return wpc ? wpc->total_samples : (uint32_t) -1;

-}

-

-// Get the current sample index position, or -1 if unknown

-

-uint32_t WavpackGetSampleIndex (WavpackContext *wpc)

-{

-    if (wpc)

-        return wpc->stream.sample_index;

-

-    return (uint32_t) -1;

-}

-

-// Get the number of errors encountered so far

-

-int WavpackGetNumErrors (WavpackContext *wpc)

-{

-    return wpc ? wpc->crc_errors : 0;

-}

-

-// return TRUE if any uncorrected lossy blocks were actually written or read

-

-int WavpackLossyBlocks (WavpackContext *wpc)

-{

-    return wpc ? wpc->lossy_blocks : 0;

-}

-

-// Returns the sample rate of the specified WavPack file

-

-uint32_t WavpackGetSampleRate (WavpackContext *wpc)

-{

-    return wpc ? wpc->config.sample_rate : 44100;

-}

-

-// Returns the number of channels of the specified WavPack file. Note that

-// this is the actual number of channels contained in the file, but this

-// version can only decode the first two.

-

-int WavpackGetNumChannels (WavpackContext *wpc)

-{

-    return wpc ? wpc->config.num_channels : 2;

-}

-

-// Returns the actual number of valid bits per sample contained in the

-// original file, which may or may not be a multiple of 8. Floating data

-// always has 32 bits, integers may be from 1 to 32 bits each. When this

-// value is not a multiple of 8, then the "extra" bits are located in the

-// LSBs of the results. That is, values are right justified when unpacked

-// into longs, but are left justified in the number of bytes used by the

-// original data.

-

-int WavpackGetBitsPerSample (WavpackContext *wpc)

-{

-    return wpc ? wpc->config.bits_per_sample : 16;

-}

-

-// Returns the number of bytes used for each sample (1 to 4) in the original

-// file. This is required information for the user of this module because the

-// audio data is returned in the LOWER bytes of the long buffer and must be

-// left-shifted 8, 16, or 24 bits if normalized longs are required.

-

-int WavpackGetBytesPerSample (WavpackContext *wpc)

-{

-    return wpc ? wpc->config.bytes_per_sample : 2;

-}

-

-// This function will return the actual number of channels decoded from the

-// file (which may or may not be less than the actual number of channels, but

-// will always be 1 or 2). Normally, this will be the front left and right

-// channels of a multi-channel file.

-

-int WavpackGetReducedChannels (WavpackContext *wpc)

-{

-    if (wpc)

-        return wpc->reduced_channels ? wpc->reduced_channels : wpc->config.num_channels;

-    else

-        return 2;

-}

-

-// Read from current file position until a valid 32-byte WavPack 4.0 header is

-// found and read into the specified pointer. The number of bytes skipped is

-// returned. If no WavPack header is found within 1 meg, then a -1 is returned

-// to indicate the error. No additional bytes are read past the header and it

-// is returned in the processor's native endian mode. Seeking is not required.

-

-static uint32_t read_next_header (read_stream infile, WavpackHeader *wphdr)

-{

-    char buffer [sizeof (*wphdr)], *sp = buffer + sizeof (*wphdr), *ep = sp;

-    uint32_t bytes_skipped = 0;

-    int bleft;

-

-    while (1) {

-        if (sp < ep) {

-            bleft = ep - sp;

-            memcpy (buffer, sp, bleft);

-        }

-        else

-            bleft = 0;

-

-        if (infile (buffer + bleft, sizeof (*wphdr) - bleft) != (int32_t) sizeof (*wphdr) - bleft)

-            return -1;

-

-        sp = buffer;

-

-        if (*sp++ == 'w' && *sp == 'v' && *++sp == 'p' && *++sp == 'k' &&

-            !(*++sp & 1) && sp [2] < 16 && !sp [3] && sp [5] == 4 &&

-            sp [4] >= (MIN_STREAM_VERS & 0xff) && sp [4] <= (MAX_STREAM_VERS & 0xff)) {

-                memcpy (wphdr, buffer, sizeof (*wphdr));

-                little_endian_to_native (wphdr, WavpackHeaderFormat);

-                return bytes_skipped;

-            }

-

-        while (sp < ep && *sp != 'w')

-            sp++;

-

-        if ((bytes_skipped += sp - buffer) > 1048576L)

-            return -1;

-    }

-}

diff --git a/src/wavpack/wvfilter.c.no_compile b/src/wavpack/wvfilter.c.no_compile
deleted file mode 100644
index f80d73dd..00000000
--- a/src/wavpack/wvfilter.c.no_compile
+++ /dev/null
@@ -1,200 +0,0 @@
-////////////////////////////////////////////////////////////////////////////

-//                           **** WAVPACK ****                            //

-//                  Hybrid Lossless Wavefile Compressor                   //

-//              Copyright (c) 1998 - 2006 Conifer Software.               //

-//                          All Rights Reserved.                          //

-//      Distributed under the BSD Software License (see license.txt)      //

-////////////////////////////////////////////////////////////////////////////

-

-// wv_filter.c

-

-// This is the main module for the demonstration WavPack command-line

-// decoder filter. It uses the tiny "hardware" version of the decoder and

-// accepts WavPack files on stdin and outputs a standard MS wav file to

-// stdout. Note that this involves converting the data to little-endian

-// (if the executing processor is not), possibly packing the data into

-// fewer bytes per sample, and generating an appropriate riff wav header.

-// Note that this is NOT the copy of the RIFF header that might be stored

-// in the file, and any additional RIFF information and tags are lost.

-// See wputils.c for further limitations.

-

-#include "wavpack.h"

-

-#if defined(WIN32)

-#include <io.h>

-#include <fcntl.h>

-#endif

-

-#include <string.h>

-

-// These structures are used to place a wav riff header at the beginning of

-// the output.

-

-typedef struct {

-    char ckID [4];

-    uint32_t ckSize;

-    char formType [4];

-} RiffChunkHeader;

-

-typedef struct {

-    char ckID [4];

-    uint32_t ckSize;

-} ChunkHeader;

-

-#define ChunkHeaderFormat "4L"

-

-typedef struct {

-    ushort FormatTag, NumChannels;

-    uint32_t SampleRate, BytesPerSecond;

-    ushort BlockAlign, BitsPerSample;

-} WaveHeader;

-

-#define WaveHeaderFormat "SSLLSS"

-

-static uchar *format_samples (int bps, uchar *dst, int32_t *src, uint32_t samcnt);

-static int32_t read_bytes (void *buff, int32_t bcount);

-static int32_t temp_buffer [256];

-

-int main ()

-{

-    ChunkHeader FormatChunkHeader, DataChunkHeader;

-    RiffChunkHeader RiffChunkHeader;

-    WaveHeader WaveHeader;

-

-    uint32_t total_unpacked_samples = 0, total_samples;

-    int num_channels, bps;

-    WavpackContext *wpc;

-    char error [80];

-

-#if defined(WIN32)

-    setmode (fileno (stdin), O_BINARY);

-    setmode (fileno (stdout), O_BINARY);

-#endif

-

-    wpc = WavpackOpenFileInput (read_bytes, error);

-

-    if (!wpc) {

-        fputs (error, stderr);

-        fputs ("\n", stderr);

-        return 1;

-    }

-

-    num_channels = WavpackGetReducedChannels (wpc);

-    total_samples = WavpackGetNumSamples (wpc);

-    bps = WavpackGetBytesPerSample (wpc);

-

-    strncpy (RiffChunkHeader.ckID, "RIFF", sizeof (RiffChunkHeader.ckID));

-    RiffChunkHeader.ckSize = total_samples * num_channels * bps + sizeof (ChunkHeader) * 2 + sizeof (WaveHeader) + 4;

-    strncpy (RiffChunkHeader.formType, "WAVE", sizeof (RiffChunkHeader.formType));

-

-    strncpy (FormatChunkHeader.ckID, "fmt ", sizeof (FormatChunkHeader.ckID));

-    FormatChunkHeader.ckSize = sizeof (WaveHeader);

-

-    WaveHeader.FormatTag = 1;

-    WaveHeader.NumChannels = num_channels;

-    WaveHeader.SampleRate = WavpackGetSampleRate (wpc);

-    WaveHeader.BlockAlign = num_channels * bps;

-    WaveHeader.BytesPerSecond = WaveHeader.SampleRate * WaveHeader.BlockAlign;

-    WaveHeader.BitsPerSample = WavpackGetBitsPerSample (wpc);

-

-    strncpy (DataChunkHeader.ckID, "data", sizeof (DataChunkHeader.ckID));

-    DataChunkHeader.ckSize = total_samples * num_channels * bps;

-

-    native_to_little_endian (&RiffChunkHeader, ChunkHeaderFormat);

-    native_to_little_endian (&FormatChunkHeader, ChunkHeaderFormat);

-    native_to_little_endian (&WaveHeader, WaveHeaderFormat);

-    native_to_little_endian (&DataChunkHeader, ChunkHeaderFormat);

-

-    if (!fwrite (&RiffChunkHeader, sizeof (RiffChunkHeader), 1, stdout) ||

-        !fwrite (&FormatChunkHeader, sizeof (FormatChunkHeader), 1, stdout) ||

-        !fwrite (&WaveHeader, sizeof (WaveHeader), 1, stdout) ||

-        !fwrite (&DataChunkHeader, sizeof (DataChunkHeader), 1, stdout)) {

-            fputs ("can't write .WAV data, disk probably full!\n", stderr);

-            return 1;

-        }

-

-    while (1) {

-        uint32_t samples_unpacked;

-

-        samples_unpacked = WavpackUnpackSamples (wpc, temp_buffer, 256 / num_channels);

-        total_unpacked_samples += samples_unpacked;

-

-        if (samples_unpacked) {

-            format_samples (bps, (uchar *) temp_buffer, temp_buffer, samples_unpacked *= num_channels);

-

-            if (fwrite (temp_buffer, bps, samples_unpacked, stdout) != samples_unpacked) {

-                fputs ("can't write .WAV data, disk probably full!\n", stderr);

-                return 1;

-            }

-        }

-

-        if (!samples_unpacked)

-            break;

-    }

-

-    fflush (stdout);

-

-    if (WavpackGetNumSamples (wpc) != (uint32_t) -1 &&

-        total_unpacked_samples != WavpackGetNumSamples (wpc)) {

-            fputs ("incorrect number of samples!\n", stderr);

-            return 1;

-    }

-

-    if (WavpackGetNumErrors (wpc)) {

-        fputs ("crc errors detected!\n", stderr);

-        return 1;

-    }

-

-    return 0;

-}

-

-static int32_t read_bytes (void *buff, int32_t bcount)

-{

-    return fread (buff, 1, bcount, stdin);

-}

-

-// Reformat samples from longs in processor's native endian mode to

-// little-endian data with (possibly) less than 4 bytes / sample.

-

-static uchar *format_samples (int bps, uchar *dst, int32_t *src, uint32_t samcnt)

-{

-    int32_t temp;

-

-    switch (bps) {

-

-        case 1:

-            while (samcnt--)

-                *dst++ = *src++ + 128;

-

-            break;

-

-        case 2:

-            while (samcnt--) {

-                *dst++ = (uchar)(temp = *src++);

-                *dst++ = (uchar)(temp >> 8);

-            }

-

-            break;

-

-        case 3:

-            while (samcnt--) {

-                *dst++ = (uchar)(temp = *src++);

-                *dst++ = (uchar)(temp >> 8);

-                *dst++ = (uchar)(temp >> 16);

-            }

-

-            break;

-

-        case 4:

-            while (samcnt--) {

-                *dst++ = (uchar)(temp = *src++);

-                *dst++ = (uchar)(temp >> 8);

-                *dst++ = (uchar)(temp >> 16);

-                *dst++ = (uchar)(temp >> 24);

-            }

-

-            break;

-    }

-

-    return dst;

-}