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ffmpeg-mt
Commit 07bbedbe authored by faust3's avatar faust3
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add approved hunks of the wmapro decoder 

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@19563 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b
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...@@ -201,6 +201,7 @@ Codecs: ...@@ -201,6 +201,7 @@ Codecs:
vp6 Aurelien Jacobs vp6 Aurelien Jacobs
vqavideo.c Mike Melanson vqavideo.c Mike Melanson
wavpack.c Kostya Shishkov wavpack.c Kostya Shishkov
wmaprodec.c Sascha Sommer
wmv2.c Michael Niedermayer wmv2.c Michael Niedermayer
wnv1.c Kostya Shishkov wnv1.c Kostya Shishkov
xan.c Mike Melanson xan.c Mike Melanson
......
libavcodec/wmaprodata.h 0 → 100644
View file @ 07bbedbe
/*
* WMA 9/3/PRO compatible decoder
* Copyright (c) 2007 Baptiste Coudurier, Benjamin Larsson, Ulion
* Copyright (c) 2008 - 2009 Sascha Sommer
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file libavcodec/wmaprodata.h
* @brief tables for wmapro decoding
*/
#ifndef AVCODEC_WMAPRODATA_H
#define AVCODEC_WMAPRODATA_H
/**
* @brief frequencies to divide the frequency spectrum into scale factor bands
*/
static const uint16_t critical_freq[] = {
100, 200, 300, 400, 510, 630, 770,
920, 1080, 1270, 1480, 1720, 2000, 2320,
2700, 3150, 3700, 4400, 5300, 6400, 7700,
9500, 12000, 15500, 20675, 28575, 41375, 63875,
};
/**
* @name huffman tables for DPCM-coded scale factors
* @{
*/
#define HUFF_SCALE_SIZE 121
#define HUFF_SCALE_MAXBITS 19
static const uint16_t scale_huffcodes[HUFF_SCALE_SIZE] = {
0xE639, 0xE6C2, 0xE6C1, 0xE6C0, 0xE63F, 0xE63E, 0xE63D, 0xE63C,
0xE63B, 0xE63A, 0xE638, 0xE637, 0xE636, 0xE635, 0xE634, 0xE632,
0xE633, 0xE620, 0x737B, 0xE610, 0xE611, 0xE612, 0xE613, 0xE614,
0xE615, 0xE616, 0xE617, 0xE618, 0xE619, 0xE61A, 0xE61B, 0xE61C,
0xE61D, 0xE61E, 0xE61F, 0xE6C3, 0xE621, 0xE622, 0xE623, 0xE624,
0xE625, 0xE626, 0xE627, 0xE628, 0xE629, 0xE62A, 0xE62B, 0xE62C,
0xE62D, 0xE62E, 0xE62F, 0xE630, 0xE631, 0x1CDF, 0x0E60, 0x0399,
0x00E7, 0x001D, 0x0000, 0x0001, 0x0001, 0x0001, 0x0002, 0x0006,
0x0002, 0x0007, 0x0006, 0x000F, 0x0038, 0x0072, 0x039A, 0xE6C4,
0xE6C5, 0xE6C6, 0xE6C7, 0xE6C8, 0xE6C9, 0xE6CA, 0xE6CB, 0xE6CC,
0xE6CD, 0xE6CE, 0xE6CF, 0xE6D0, 0xE6D1, 0xE6D2, 0xE6D3, 0xE6D4,
0xE6D5, 0xE6D6, 0xE6D7, 0xE6D8, 0xE6D9, 0xE6DA, 0xE6DB, 0xE6DC,
0xE6DD, 0xE6DE, 0xE6DF, 0xE6E0, 0xE6E1, 0xE6E2, 0xE6E3, 0xE6E4,
0xE6E5, 0xE6E6, 0xE6E7, 0xE6E8, 0xE6E9, 0xE6EA, 0xE6EB, 0xE6EC,
0xE6ED, 0xE6EE, 0xE6EF, 0xE6F0, 0xE6F1, 0xE6F2, 0xE6F3, 0xE6F4,
0xE6F5,
};
static const uint8_t scale_huffbits[HUFF_SCALE_SIZE] = {
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 18, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 16, 15, 13,
11, 8, 5, 2, 1, 3, 5, 6,
6, 7, 7, 7, 9, 10, 13, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 19, 19, 19,
19,
};
/** @} */
/**
* @name huffman, run and level tables for run level coded scale factors
* @{
*/
#define HUFF_SCALE_RL_SIZE 120
#define HUFF_SCALE_RL_MAXBITS 21
static const uint32_t scale_rl_huffcodes[HUFF_SCALE_RL_SIZE] = {
0x00010C, 0x000001, 0x10FE2A, 0x000003, 0x000003, 0x000001, 0x000013,
0x000020, 0x000029, 0x000014, 0x000016, 0x000045, 0x000049, 0x00002F,
0x000042, 0x00008E, 0x00008F, 0x000129, 0x000009, 0x00000D, 0x0004AC,
0x00002C, 0x000561, 0x0002E6, 0x00087C, 0x0002E2, 0x00095C, 0x000018,
0x000001, 0x000016, 0x000044, 0x00002A, 0x000007, 0x000159, 0x000143,
0x000128, 0x00015A, 0x00012D, 0x00002B, 0x0000A0, 0x000142, 0x00012A,
0x0002EF, 0x0004AF, 0x00087D, 0x004AE9, 0x0043F9, 0x000067, 0x000199,
0x002B05, 0x001583, 0x0021FE, 0x10FE2C, 0x000004, 0x00002E, 0x00010D,
0x00000A, 0x000244, 0x000017, 0x000245, 0x000011, 0x00010E, 0x00012C,
0x00002A, 0x00002F, 0x000121, 0x000046, 0x00087E, 0x0000BA, 0x000032,
0x0087F0, 0x0056DC, 0x0002EC, 0x0043FA, 0x002B6F, 0x004AE8, 0x0002B7,
0x10FE2B, 0x000001, 0x000051, 0x000010, 0x0002EE, 0x000B9C, 0x002576,
0x000198, 0x0056DD, 0x0000CD, 0x000AC0, 0x000170, 0x004AEF, 0x00002D,
0x0004AD, 0x0021FF, 0x0005CF, 0x002B04, 0x10FE29, 0x10FE28, 0x0002ED,
0x002E74, 0x021FC4, 0x004AEE, 0x010FE3, 0x087F17, 0x000000, 0x000097,
0x0002E3, 0x000ADA, 0x002575, 0x00173B, 0x0043FB, 0x002E75, 0x10FE2D,
0x0015B6, 0x00056C, 0x000057, 0x000123, 0x000120, 0x00021E, 0x000172,
0x0002B1,
};
static const uint8_t scale_rl_huffbits[HUFF_SCALE_RL_SIZE] = {
9, 2, 21, 2, 4, 5, 5,
6, 6, 7, 7, 7, 7, 6,
7, 8, 8, 9, 10, 10, 11,
12, 11, 12, 12, 12, 12, 11,
4, 5, 7, 8, 9, 9, 9,
9, 9, 9, 8, 8, 9, 9,
12, 11, 12, 15, 15, 13, 15,
14, 13, 14, 21, 5, 6, 9,
10, 10, 11, 10, 11, 9, 9,
6, 8, 9, 7, 12, 10, 12,
16, 15, 12, 15, 14, 15, 10,
21, 6, 7, 11, 12, 14, 14,
15, 15, 14, 12, 11, 15, 12,
11, 14, 13, 14, 21, 21, 12,
16, 18, 15, 17, 20, 7, 8,
12, 12, 14, 15, 15, 16, 21,
13, 11, 7, 9, 9, 10, 11,
10,
};
static const uint8_t scale_rl_run[HUFF_SCALE_RL_SIZE] = {
0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 0, 1, 2, 3,
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
0, 1, 0, 1, 0, 1,
};
static const uint8_t scale_rl_level[HUFF_SCALE_RL_SIZE] = {
0, 0, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 8, 8, 9, 9,
};
/** @} */
/**
* @name huffman, run and level codes for run level coded coefficients
* @{
*/
#define HUFF_COEF0_SIZE 272
#define HUFF_COEF0_MAXBITS 21
static const uint32_t coef0_huffcodes[HUFF_COEF0_SIZE] = {
0x00004A, 0x00002B, 0x000000, 0x000003, 0x000006, 0x000009, 0x00000F,
0x000010, 0x000016, 0x000011, 0x000016, 0x000028, 0x00002F, 0x000026,
0x000029, 0x000045, 0x000055, 0x00005D, 0x000042, 0x00004E, 0x000051,
0x00005E, 0x00008D, 0x0000A8, 0x0000AD, 0x000080, 0x000096, 0x00009F,
0x0000AA, 0x0000BE, 0x00011C, 0x000153, 0x000158, 0x000170, 0x000104,
0x00010D, 0x000105, 0x000103, 0x00012F, 0x000177, 0x000175, 0x000157,
0x000174, 0x000225, 0x00023B, 0x00020D, 0x00021F, 0x000281, 0x00027B,
0x000282, 0x0002AC, 0x0002FD, 0x00044F, 0x000478, 0x00044D, 0x0002EC,
0x00044E, 0x000564, 0x000409, 0x00040B, 0x000501, 0x000545, 0x0004F3,
0x000541, 0x00043B, 0x0004F1, 0x0004F4, 0x0008FD, 0x000A94, 0x000811,
0x000B88, 0x000B91, 0x000B93, 0x0008EA, 0x000899, 0x000B8A, 0x000972,
0x0009E5, 0x000A8F, 0x000A84, 0x000A8E, 0x000A00, 0x000830, 0x0008E8,
0x000B95, 0x000871, 0x00083A, 0x000814, 0x000873, 0x000BFE, 0x001728,
0x001595, 0x001712, 0x00102A, 0x001021, 0x001729, 0x00152E, 0x0013C3,
0x001721, 0x001597, 0x00151B, 0x0010F2, 0x001403, 0x001703, 0x001503,
0x001708, 0x0013C1, 0x00170E, 0x00170C, 0x0010E1, 0x0011EA, 0x001020,
0x001500, 0x0017FA, 0x001704, 0x001705, 0x0017F0, 0x0017FB, 0x0021E6,
0x002B2D, 0x0020C6, 0x002B29, 0x002E4A, 0x0023AC, 0x001519, 0x0023F3,
0x002B2C, 0x0021C0, 0x0017FE, 0x0023D7, 0x0017F9, 0x0012E7, 0x0013C0,
0x002261, 0x0023D3, 0x002057, 0x002056, 0x0021D2, 0x0020C7, 0x0023D2,
0x0020EC, 0x0044C0, 0x002FE2, 0x00475B, 0x002A03, 0x002FE3, 0x0021E2,
0x0021D0, 0x002A31, 0x002E13, 0x002E05, 0x0047E5, 0x00000E, 0x000024,
0x000088, 0x0000B9, 0x00010C, 0x000224, 0x0002B3, 0x000283, 0x0002ED,
0x00047B, 0x00041E, 0x00043D, 0x0004F5, 0x0005FD, 0x000A92, 0x000B96,
0x000838, 0x000971, 0x000B83, 0x000B80, 0x000BF9, 0x0011D3, 0x0011E8,
0x0011D7, 0x001527, 0x0011F8, 0x001073, 0x0010F0, 0x0010E4, 0x0017F8,
0x001062, 0x001402, 0x0017E3, 0x00151A, 0x001077, 0x00152B, 0x00170D,
0x0021D3, 0x002E41, 0x0013C2, 0x000029, 0x0000A9, 0x00025D, 0x000419,
0x000544, 0x000B8B, 0x0009E4, 0x0011D2, 0x001526, 0x001724, 0x0012E6,
0x00150B, 0x0017FF, 0x002E26, 0x002E4B, 0x002B28, 0x0021E3, 0x002A14,
0x00475A, 0x002E12, 0x000057, 0x00023E, 0x000A90, 0x000BF0, 0x001072,
0x001502, 0x0023D6, 0x0020ED, 0x002A30, 0x0044C7, 0x00008C, 0x00047F,
0x00152A, 0x002262, 0x002E04, 0x0000A1, 0x0005F9, 0x000173, 0x000875,
0x000171, 0x00152D, 0x0002E3, 0x0017E2, 0x0002AD, 0x0021C1, 0x000479,
0x0021E7, 0x00041F, 0x005C4E, 0x000543, 0x005C4F, 0x000A91, 0x00898D,
0x000B97, 0x008746, 0x000970, 0x008745, 0x000B85, 0x00A856, 0x00152F,
0x010E8E, 0x0010E5, 0x00A857, 0x00170F, 0x021D11, 0x002A58, 0x010E8F,
0x002E40, 0x021D13, 0x002A59, 0x043A25, 0x002A02, 0x043A21, 0x0044C1,
0x087448, 0x0047E4, 0x043A20, 0x00542A, 0x087449, 0x00898C,
};
static const uint8_t coef0_huffbits[HUFF_COEF0_SIZE] = {
8, 7, 2, 3, 3, 4, 4,
5, 5, 6, 6, 6, 6, 7,
7, 7, 7, 7, 8, 8, 8,
8, 8, 8, 8, 9, 9, 9,
9, 9, 9, 9, 9, 9, 10,
10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 11, 11, 11, 11,
11, 11, 11, 11, 11, 11, 11,
11, 11, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 13,
12, 12, 12, 12, 12, 12, 13,
13, 13, 13, 13, 13, 13, 12,
12, 13, 13, 13, 13, 13, 13,
13, 13, 14, 14, 13, 13, 14,
13, 13, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 13, 14,
14, 14, 14, 14, 14, 14, 15,
14, 15, 14, 14, 14, 14, 14,
14, 15, 14, 14, 14, 14, 14,
14, 14, 15, 15, 15, 15, 14,
15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 4, 7,
8, 9, 10, 10, 10, 11, 11,
11, 12, 12, 12, 12, 12, 12,
13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 14, 14, 14, 14,
14, 14, 14, 14, 14, 13, 14,
15, 14, 14, 6, 9, 11, 12,
12, 12, 13, 13, 13, 13, 14,
14, 14, 14, 14, 14, 15, 15,
15, 15, 7, 10, 12, 13, 14,
14, 14, 15, 15, 15, 8, 11,
13, 14, 15, 9, 12, 9, 13,
10, 13, 10, 14, 11, 15, 11,
15, 12, 15, 12, 15, 12, 16,
12, 17, 13, 17, 13, 17, 13,
18, 14, 17, 14, 19, 14, 18,
14, 19, 14, 20, 15, 20, 15,
21, 15, 20, 16, 21, 16,
};
#define HUFF_COEF1_SIZE 244
#define HUFF_COEF1_MAXBITS 22
static const uint32_t coef1_huffcodes[HUFF_COEF1_SIZE] = {
0x0001E2, 0x00007F, 0x000000, 0x000002, 0x000008, 0x00000E, 0x000019,
0x00002F, 0x000037, 0x000060, 0x00006C, 0x000095, 0x0000C6, 0x0000F0,
0x00012E, 0x000189, 0x0001A5, 0x0001F8, 0x000253, 0x00030A, 0x000344,
0x00034D, 0x0003F2, 0x0004BD, 0x0005D7, 0x00062A, 0x00068B, 0x000693,
0x000797, 0x00097D, 0x000BAB, 0x000C52, 0x000C5E, 0x000D21, 0x000D20,
0x000F1A, 0x000FCE, 0x000FD1, 0x0012F1, 0x001759, 0x0018AC, 0x0018A7,
0x0018BF, 0x001A2B, 0x001E52, 0x001E50, 0x001E31, 0x001FB8, 0x0025E6,
0x0025E7, 0x002EB4, 0x002EB7, 0x003169, 0x00315B, 0x00317C, 0x00316C,
0x0034CA, 0x00348D, 0x003F40, 0x003CA2, 0x003F76, 0x004BC3, 0x004BE5,
0x003F73, 0x004BF8, 0x004BF9, 0x006131, 0x00628B, 0x006289, 0x0062DA,
0x00628A, 0x0062D4, 0x006997, 0x0062B4, 0x006918, 0x00794D, 0x007E7B,
0x007E87, 0x007EEA, 0x00794E, 0x00699D, 0x007967, 0x00699F, 0x0062DB,
0x007E7A, 0x007EEB, 0x00BAC0, 0x0097C9, 0x00C537, 0x00C5AB, 0x00D233,
0x00D338, 0x00BAC1, 0x00D23D, 0x012F91, 0x00D339, 0x00FDC8, 0x00D23C,
0x00FDDC, 0x00FDC9, 0x00FDDD, 0x00D33C, 0x000003, 0x000016, 0x00003E,
0x0000C3, 0x0001A1, 0x000347, 0x00062E, 0x000BAA, 0x000F2D, 0x001A2A,
0x001E58, 0x00309B, 0x003CA3, 0x005D6A, 0x00629A, 0x006996, 0x00794F,
0x007EE5, 0x00BAD7, 0x00C5AA, 0x00C5F4, 0x00FDDF, 0x00FDDE, 0x018A20,
0x018A6D, 0x01A67B, 0x01A464, 0x025F21, 0x01F9E2, 0x01F9E3, 0x00000A,
0x00003D, 0x000128, 0x0003C7, 0x000C24, 0x0018A3, 0x002EB1, 0x003CB2,
0x00691F, 0x007E79, 0x000013, 0x0000BB, 0x00034E, 0x000D14, 0x0025FD,
0x004BE7, 0x000024, 0x000188, 0x0007EF, 0x000035, 0x000308, 0x0012F2,
0x00005C, 0x0003F6, 0x0025E0, 0x00006D, 0x000698, 0x000096, 0x000C25,
0x0000C7, 0x000F1B, 0x0000F3, 0x0012FF, 0x000174, 0x001A66, 0x0001A0,
0x003099, 0x0001E4, 0x00316B, 0x000252, 0x003F31, 0x00030B, 0x004BE6,
0x000346, 0x0062FB, 0x00034F, 0x007966, 0x0003F5, 0x007E86, 0x0005D4,
0x00C511, 0x00062C, 0x00C5F5, 0x000692, 0x00F299, 0x000795, 0x00F298,
0x0007E9, 0x018A21, 0x00097E, 0x0175AD, 0x000C27, 0x01A67A, 0x000C57,
0x02EB59, 0x000D22, 0x0314D9, 0x000F19, 0x03F3C2, 0x000FCD, 0x0348CB,
0x0012F8, 0x04BE41, 0x0018A0, 0x03F3C1, 0x0018A1, 0x04BE40, 0x0018B7,
0x0629B0, 0x001A64, 0x0D2329, 0x001E30, 0x03F3C3, 0x001F9F, 0x0BAD62,
0x001F99, 0x0FCF00, 0x00309A, 0x0629B1, 0x002EB6, 0x175AC3, 0x00314C,
0x069195, 0x003168, 0x0BAD63, 0x00348E, 0x175AC1, 0x003F30, 0x07E781,
0x003F41, 0x0D2328, 0x003F42, 0x1F9E03, 0x004BC2, 0x175AC2, 0x003F74,
0x175AC0, 0x005D61, 0x3F3C05, 0x006130, 0x3F3C04, 0x0062B5,
};
static const uint8_t coef1_huffbits[HUFF_COEF1_SIZE] = {
9, 7, 2, 3, 4, 4, 5,
6, 6, 7, 7, 8, 8, 8,
9, 9, 9, 9, 10, 10, 10,
10, 10, 11, 11, 11, 11, 11,
11, 12, 12, 12, 12, 12, 12,
12, 12, 12, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 14,
14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 15, 15,
14, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15,
15, 15, 16, 16, 16, 16, 16,
16, 16, 16, 17, 16, 16, 16,
16, 16, 16, 16, 3, 5, 6,
8, 9, 10, 11, 12, 12, 13,
13, 14, 14, 15, 15, 15, 15,
15, 16, 16, 16, 16, 16, 17,
17, 17, 17, 18, 17, 17, 4,
6, 9, 10, 12, 13, 14, 14,
15, 15, 5, 8, 10, 12, 14,
15, 6, 9, 11, 6, 10, 13,
7, 10, 14, 7, 11, 8, 12,
8, 12, 8, 13, 9, 13, 9,
14, 9, 14, 10, 14, 10, 15,
10, 15, 10, 15, 10, 15, 11,
16, 11, 16, 11, 16, 11, 16,
11, 17, 12, 17, 12, 17, 12,
18, 12, 18, 12, 18, 12, 18,
13, 19, 13, 18, 13, 19, 13,
19, 13, 20, 13, 18, 13, 20,
13, 20, 14, 19, 14, 21, 14,
19, 14, 20, 14, 21, 14, 19,
14, 20, 14, 21, 15, 21, 14,
21, 15, 22, 15, 22, 15,
};
static const uint16_t coef0_run[HUFF_COEF0_SIZE] = {
0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67,
68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81,
82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123,
124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137,
138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 0, 1,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 0, 1, 2, 3,
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
18, 19, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1,
2, 3, 4, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
1, 0, 1, 0, 1, 0,
};
static const uint16_t coef0_level[HUFF_COEF0_SIZE] = {
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5,
5, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11,
11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18,
18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25,
25, 26, 26, 27, 27, 28,
};
static const uint16_t coef1_run[HUFF_COEF1_SIZE] = {
0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69,
70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87,
88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 0, 1, 2, 3, 4, 5,
6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1,
2, 3, 4, 5, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 0, 1, 0,
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
1, 0, 1, 0, 1, 0, 1, 0, 0, 0,
};
static const uint16_t coef1_level[HUFF_COEF1_SIZE] = {
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4,
4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 9, 9, 10,
10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19,
19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28,
28, 29, 29, 30, 30, 31, 31, 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37,
37, 38, 38, 39, 39, 40, 40, 41, 41, 42, 42, 43, 43, 44, 44, 45, 45, 46,
46, 47, 47, 48, 48, 49, 49, 50, 51, 52,
};
/** @} */
/**
* @name huffman and vector lookup tables for vector-coded coefficients
* @{
*/
#define HUFF_VEC4_SIZE 127
#define HUFF_VEC4_MAXBITS 14
static const uint16_t vec4_huffcodes[HUFF_VEC4_SIZE] = {
0x0019, 0x0027, 0x00F2, 0x03BA, 0x0930, 0x1267, 0x0031, 0x0030,
0x0097, 0x0221, 0x058B, 0x0124, 0x00EB, 0x01D4, 0x03D8, 0x0584,
0x0364, 0x045F, 0x0F66, 0x0931, 0x24CD, 0x002F, 0x0039, 0x00E8,
0x02C3, 0x078A, 0x0037, 0x0029, 0x0084, 0x01B1, 0x00ED, 0x0086,
0x00F9, 0x03AB, 0x01EB, 0x08BC, 0x011E, 0x00F3, 0x0220, 0x058A,
0x00EC, 0x008E, 0x012B, 0x01EA, 0x0119, 0x04B0, 0x04B1, 0x03B8,
0x0691, 0x0365, 0x01ED, 0x049A, 0x0EA9, 0x0EA8, 0x08BD, 0x24CC,
0x0026, 0x0035, 0x00DB, 0x02C4, 0x07B2, 0x0038, 0x002B, 0x007F,
0x01B3, 0x00F4, 0x0091, 0x0116, 0x03BB, 0x0215, 0x0932, 0x002D,
0x002A, 0x008A, 0x01DE, 0x0028, 0x0020, 0x005C, 0x0090, 0x0068,
0x01EE, 0x00E9, 0x008D, 0x012A, 0x0087, 0x005D, 0x0118, 0x0349,
0x01EF, 0x01E3, 0x08B9, 0x00F0, 0x00D3, 0x0214, 0x049B, 0x00DA,
0x0089, 0x0125, 0x0217, 0x012D, 0x0690, 0x0094, 0x007D, 0x011F,
0x007E, 0x0059, 0x0127, 0x01A5, 0x0111, 0x00F8, 0x045D, 0x03B9,
0x0259, 0x0580, 0x02C1, 0x01DF, 0x0585, 0x0216, 0x0163, 0x01B0,
0x03C4, 0x08B8, 0x078B, 0x0755, 0x0581, 0x0F67, 0x0000,
};
static const uint8_t vec4_huffbits[HUFF_VEC4_SIZE] = {
5, 6, 8, 10, 12, 13, 6, 6,
8, 10, 11, 9, 8, 9, 10, 11,
10, 11, 12, 12, 14, 6, 6, 8,
10, 11, 6, 6, 8, 9, 8, 8,
8, 10, 9, 12, 9, 8, 10, 11,
8, 8, 9, 9, 9, 11, 11, 10,
11, 10, 9, 11, 12, 12, 12, 14,
6, 6, 8, 10, 11, 6, 6, 7,
9, 8, 8, 9, 10, 10, 12, 6,
6, 8, 9, 6, 6, 7, 8, 7,
9, 8, 8, 9, 8, 7, 9, 10,
9, 9, 12, 8, 8, 10, 11, 8,
8, 9, 10, 9, 11, 8, 7, 9,
7, 7, 9, 9, 9, 8, 11, 10,
10, 11, 10, 9, 11, 10, 9, 9,
10, 12, 11, 11, 11, 12, 1,
};
#define HUFF_VEC2_SIZE 137
#define HUFF_VEC2_MAXBITS 12
static const uint16_t vec2_huffcodes[HUFF_VEC2_SIZE] = {
0x055, 0x01C, 0x01A, 0x02B, 0x028, 0x067, 0x08B, 0x039,
0x170, 0x10D, 0x2A5, 0x047, 0x464, 0x697, 0x523, 0x8CB,
0x01B, 0x00E, 0x000, 0x010, 0x012, 0x036, 0x048, 0x04C,
0x0C2, 0x09B, 0x171, 0x03B, 0x224, 0x34A, 0x2D6, 0x019,
0x00F, 0x002, 0x014, 0x017, 0x006, 0x05D, 0x054, 0x0C7,
0x0B4, 0x192, 0x10E, 0x233, 0x043, 0x02C, 0x00F, 0x013,
0x006, 0x02F, 0x02C, 0x068, 0x077, 0x0DF, 0x111, 0x1A4,
0x16A, 0x2A4, 0x027, 0x011, 0x018, 0x02D, 0x00F, 0x04A,
0x040, 0x097, 0x01F, 0x11B, 0x022, 0x16D, 0x066, 0x035,
0x005, 0x02B, 0x049, 0x009, 0x075, 0x0CB, 0x0AA, 0x187,
0x106, 0x08A, 0x047, 0x060, 0x06E, 0x01D, 0x074, 0x0C4,
0x01E, 0x118, 0x1A7, 0x038, 0x042, 0x053, 0x076, 0x0A8,
0x0CA, 0x082, 0x110, 0x18D, 0x12D, 0x0B9, 0x0C8, 0x0DE,
0x01C, 0x0AB, 0x113, 0x18C, 0x10F, 0x09A, 0x0A5, 0x0B7,
0x11A, 0x186, 0x1A6, 0x259, 0x153, 0x18A, 0x193, 0x020,
0x10C, 0x046, 0x03A, 0x107, 0x149, 0x16C, 0x2D7, 0x225,
0x258, 0x316, 0x696, 0x317, 0x042, 0x522, 0x290, 0x8CA,
0x001,
};
static const uint8_t vec2_huffbits[HUFF_VEC2_SIZE] = {
7, 6, 6, 6, 7, 7, 8, 9,
9, 10, 10, 11, 11, 11, 12, 12,
6, 4, 5, 5, 6, 6, 7, 8,
8, 9, 9, 10, 10, 10, 11, 6,
4, 5, 5, 6, 7, 7, 8, 8,
9, 9, 10, 10, 11, 6, 5, 5,
6, 6, 7, 7, 8, 8, 9, 9,
10, 10, 7, 6, 6, 6, 7, 7,
8, 8, 9, 9, 10, 10, 7, 6,
7, 7, 7, 8, 8, 8, 9, 9,
10, 8, 7, 7, 7, 8, 8, 8,
9, 9, 9, 9, 8, 8, 8, 8,
8, 9, 9, 9, 9, 8, 8, 8,
9, 9, 9, 9, 10, 9, 9, 9,
9, 9, 9, 10, 9, 9, 9, 10,
10, 11, 10, 10, 10, 10, 11, 10,
10, 10, 11, 10, 11, 12, 11, 12,
3,
};
#define HUFF_VEC1_SIZE 101
#define HUFF_VEC1_MAXBITS 11
static const uint16_t vec1_huffcodes[HUFF_VEC1_SIZE] = {
0x01A, 0x003, 0x017, 0x010, 0x00C, 0x009, 0x005, 0x000,
0x00D, 0x00A, 0x009, 0x00C, 0x00F, 0x002, 0x004, 0x007,
0x00B, 0x00F, 0x01C, 0x006, 0x010, 0x015, 0x01C, 0x022,
0x03B, 0x00E, 0x019, 0x023, 0x034, 0x036, 0x03A, 0x047,
0x008, 0x00A, 0x01E, 0x031, 0x037, 0x050, 0x053, 0x06B,
0x06F, 0x08C, 0x0E8, 0x0EA, 0x0EB, 0x016, 0x03E, 0x03F,
0x06C, 0x089, 0x08A, 0x0A3, 0x0A4, 0x0D4, 0x0DD, 0x0EC,
0x0EE, 0x11A, 0x1D2, 0x024, 0x025, 0x02E, 0x027, 0x0C2,
0x0C0, 0x0DA, 0x0DB, 0x111, 0x144, 0x116, 0x14A, 0x145,
0x1B8, 0x1AB, 0x1DA, 0x1DE, 0x1DB, 0x1DF, 0x236, 0x237,
0x3A6, 0x3A7, 0x04D, 0x04C, 0x05E, 0x05F, 0x183, 0x182,
0x186, 0x221, 0x187, 0x220, 0x22E, 0x22F, 0x296, 0x354,
0x297, 0x355, 0x372, 0x373, 0x016,
};
static const uint8_t vec1_huffbits[HUFF_VEC1_SIZE] = {
7, 6, 5, 5, 5, 5, 5, 5,
4, 4, 4, 4, 4, 5, 5, 5,
5, 5, 5, 6, 6, 6, 6, 6,
6, 7, 7, 7, 7, 7, 7, 7,
8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 11, 11, 11, 11, 11, 11,
11, 11, 11, 11, 11, 11, 11, 11,
11, 11, 11, 11, 5,
};
static const uint16_t symbol_to_vec4[HUFF_VEC4_SIZE] = {
0, 1, 2, 3, 4, 5, 16, 17, 18, 19,
20, 32, 33, 34, 35, 48, 49, 50, 64, 65,
80, 256, 257, 258, 259, 260, 272, 273, 274, 275,
288, 289, 290, 304, 305, 320, 512, 513, 514, 515,
528, 529, 530, 544, 545, 560, 768, 769, 770, 784,
785, 800, 1024, 1025, 1040, 1280, 4096, 4097, 4098, 4099,
4100, 4112, 4113, 4114, 4115, 4128, 4129, 4130, 4144, 4145,
4160, 4352, 4353, 4354, 4355, 4368, 4369, 4370, 4384, 4385,
4400, 4608, 4609, 4610, 4624, 4625, 4640, 4864, 4865, 4880,
5120, 8192, 8193, 8194, 8195, 8208, 8209, 8210, 8224, 8225,
8240, 8448, 8449, 8450, 8464, 8465, 8480, 8704, 8705, 8720,
8960, 12288, 12289, 12290, 12304, 12305, 12320, 12544, 12545, 12560,
12800, 16384, 16385, 16400, 16640, 20480, 0,
};
static const uint8_t symbol_to_vec2[HUFF_VEC2_SIZE] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 64, 65,
66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 80, 81, 82, 83, 84,
85, 86, 87, 88, 89, 90, 96, 97, 98, 99, 100, 101, 102, 103, 104,
105, 112, 113, 114, 115, 116, 117, 118, 119, 120, 128, 129, 130, 131, 132,
133, 134, 135, 144, 145, 146, 147, 148, 149, 150, 160, 161, 162, 163, 164,
165, 176, 177, 178, 179, 180, 192, 193, 194, 195, 208, 209, 210, 224, 225,
240, 0,
};
/** @} */
/**
* @brief decorrelation matrix for multichannel streams
**/
static const float default_decorrelation_matrices[] = {
1.000000, 0.707031, -0.707031, 0.707031, 0.707031, 0.578125, 0.707031,
0.410156, 0.578125, -0.707031, 0.410156, 0.578125, 0.000000, -0.816406,
0.500000, 0.652344, 0.500000, 0.269531, 0.500000, 0.269531, -0.500000,
-0.652344, 0.500000, -0.269531, -0.500000, 0.652344, 0.500000, -0.652344,
0.500000, -0.269531, 0.445312, 0.601562, 0.511719, 0.371094, 0.195312,
0.445312, 0.371094, -0.195312, -0.601562, -0.511719, 0.445312, 0.000000,
-0.632812, 0.000000, 0.632812, 0.445312, -0.371094, -0.195312, 0.601562,
-0.511719, 0.445312, -0.601562, 0.511719, -0.371094, 0.195312, 0.410156,
0.558594, 0.500000, 0.410156, 0.289062, 0.148438, 0.410156, 0.410156,
0.000000, -0.410156, -0.578125, -0.410156, 0.410156, 0.148438, -0.500000,
-0.410156, 0.289062, 0.558594, 0.410156, -0.148438, -0.500000, 0.410156,
0.289062, -0.558594, 0.410156, -0.410156, 0.000000, 0.410156, -0.578125,
0.410156, 0.410156, -0.558594, 0.500000, -0.410156, 0.289062, -0.148438,
};
/**
* @brief default decorrelation matrix offsets
*/
static const float *default_decorrelation[] = {
NULL,
&default_decorrelation_matrices[0],
&default_decorrelation_matrices[1],
&default_decorrelation_matrices[5],
&default_decorrelation_matrices[14],
&default_decorrelation_matrices[30],
&default_decorrelation_matrices[55]
};
#endif /* AVCODEC_WMAPRODATA_H */
libavcodec/wmaprodec.c 0 → 100644
View file @ 07bbedbe
/**
*@brief Uninitialize the decoder and free all resources.
*@param avctx codec context
*@return 0 on success, < 0 otherwise
*/
static av_cold int decode_end(AVCodecContext *avctx)
{
WMA3DecodeContext *s = avctx->priv_data;
int i;
av_freep(&s->num_sfb);
av_freep(&s->sfb_offsets);
av_freep(&s->subwoofer_cutoffs);
av_freep(&s->sf_offsets);
for (i=0 ; i<WMAPRO_BLOCK_SIZES ; i++)
ff_mdct_end(&s->mdct_ctx[i]);
return 0;
}
/**
*@brief Calculate a decorrelation matrix from the bitstream parameters.
*@param s codec context
*@param chgroup channel group for which the matrix needs to be calculated
*/
static void decode_decorrelation_matrix(WMA3DecodeContext* s,
WMA3ChannelGroup* chgroup)
{
int i;
int offset = 0;
int8_t rotation_offset[WMAPRO_MAX_CHANNELS * WMAPRO_MAX_CHANNELS];
memset(chgroup->decorrelation_matrix,0,
sizeof(float) *s->num_channels * s->num_channels);
for (i=0;i<chgroup->num_channels * (chgroup->num_channels - 1) >> 1;i++)
rotation_offset[i] = get_bits(&s->gb,6);
for (i=0;i<chgroup->num_channels;i++)
chgroup->decorrelation_matrix[chgroup->num_channels * i + i] =
get_bits1(&s->gb) ? 1.0 : -1.0;
for (i=1;i<chgroup->num_channels;i++) {
int x;
for (x=0;x<i;x++) {
int y;
for (y=0;y < i + 1 ; y++) {
float v1 = chgroup->decorrelation_matrix[x * chgroup->num_channels + y];
float v2 = chgroup->decorrelation_matrix[i * chgroup->num_channels + y];
int n = rotation_offset[offset + x];
float sinv;
float cosv;
if (n<32) {
sinv = sin64[n];
cosv = sin64[32-n];
} else {
sinv = sin64[64-n];
cosv = -sin64[n-32];
}
chgroup->decorrelation_matrix[y + x * chgroup->num_channels] =
(v1 * sinv) - (v2 * cosv);
chgroup->decorrelation_matrix[y + i * chgroup->num_channels] =
(v1 * cosv) + (v2 * sinv);
}
}
offset += i;
}
}
/**
*@brief Reconstruct the individual channel data.
*@param s codec context
*/
static void inverse_channel_transform(WMA3DecodeContext *s)
{
int i;
for (i=0;i<s->num_chgroups;i++) {
if (s->chgroup[i].transform == 1) {
/** M/S stereo decoding */
int16_t* sfb_offsets = s->cur_sfb_offsets;
float* ch0 = *sfb_offsets + s->channel[0].coeffs;
float* ch1 = *sfb_offsets++ + s->channel[1].coeffs;
const char* tb = s->chgroup[i].transform_band;
const char* tb_end = tb + s->num_bands;
while (tb < tb_end) {
const float* ch0_end = s->channel[0].coeffs +
FFMIN(*sfb_offsets,s->subframe_len);
if (*tb++ == 1) {
while (ch0 < ch0_end) {
const float v1 = *ch0;
const float v2 = *ch1;
*ch0++ = v1 - v2;
*ch1++ = v1 + v2;
}
} else {
while (ch0 < ch0_end) {
*ch0++ *= 181.0 / 128;
*ch1++ *= 181.0 / 128;
}
}
++sfb_offsets;
}
} else if (s->chgroup[i].transform) {
float data[WMAPRO_MAX_CHANNELS];
const int num_channels = s->chgroup[i].num_channels;
float** ch_data = s->chgroup[i].channel_data;
float** ch_end = ch_data + num_channels;
const int8_t* tb = s->chgroup[i].transform_band;
int16_t* sfb;
/** multichannel decorrelation */
for (sfb = s->cur_sfb_offsets ;
sfb < s->cur_sfb_offsets + s->num_bands;sfb++) {
if (*tb++ == 1) {
int y;
/** multiply values with the decorrelation_matrix */
for (y=sfb[0];y<FFMIN(sfb[1], s->subframe_len);y++) {
const float* mat = s->chgroup[i].decorrelation_matrix;
const float* data_end= data + num_channels;
float* data_ptr= data;
float** ch;
for (ch = ch_data;ch < ch_end; ch++)
*data_ptr++ = (*ch)[y];
for (ch = ch_data; ch < ch_end; ch++) {
float sum = 0;
data_ptr = data;
while (data_ptr < data_end)
sum += *data_ptr++ * *mat++;
(*ch)[y] = sum;
}
}
}
}
}
}
}
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