mirror of
https://github.com/librempeg/librempeg
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207 lines
10 KiB
C
207 lines
10 KiB
C
/*
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* Musepack decoder
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* Copyright (c) 2006 Konstantin Shishkov
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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static const int8_t mpc_idx30[] = { -1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1,-1, 0, 1};
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static const int8_t mpc_idx31[] = { -1,-1,-1, 0, 0, 0, 1, 1, 1,-1,-1,-1, 0, 0, 0, 1, 1, 1,-1,-1,-1, 0, 0, 0, 1, 1, 1};
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static const int8_t mpc_idx32[] = { -1,-1,-1,-1,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1};
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static const int8_t mpc_idx50[] = { -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2};
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static const int8_t mpc_idx51[] = { -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2};
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static const float mpc_CC[18] = {
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65536.0000, 21845.3333, 13107.2000, 9362.2857, 7281.7778, 4369.0667, 2114.0645,
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1040.2539, 516.0315, 257.0039, 128.2505, 64.0626, 32.0156, 16.0039, 8.0010,
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4.0002, 2.0001, 1.0000
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};
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#define MPC7_SCFI_SIZE 4
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#define MPC7_SCFI_BITS 3
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static const uint8_t mpc7_scfi[MPC7_SCFI_SIZE * 2] = {
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0x2, 3, 0x1, 1, 0x3, 3, 0x0, 2
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};
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#define MPC7_DSCF_SIZE 16
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#define MPC7_DSCF_BITS 6
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static const uint8_t mpc7_dscf[MPC7_DSCF_SIZE * 2] = {
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0x20, 6, 0x04, 5, 0x11, 5, 0x1E, 5, 0x0D, 4, 0x00, 3, 0x03, 3, 0x09, 4,
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0x05, 3, 0x02, 3, 0x0E, 4, 0x03, 4, 0x1F, 5, 0x05, 5, 0x21, 6, 0x0C, 4
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};
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#define MPC7_HDR_SIZE 10
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#define MPC7_HDR_BITS 9
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static const uint8_t mpc7_hdr[MPC7_HDR_SIZE * 2] = {
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0x5C, 8, 0x2F, 7, 0x0A, 5, 0x04, 4, 0x00, 2,
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0x01, 1, 0x03, 3, 0x16, 6, 0xBB, 9, 0xBA, 9
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};
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#define MPC7_QUANT_VLC_TABLES 7
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static const uint8_t mpc7_quant_vlc_sizes[MPC7_QUANT_VLC_TABLES * 2] = {
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27, 25, 7, 9, 15, 31, 63
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};
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static const uint8_t mpc7_quant_vlc_off[MPC7_QUANT_VLC_TABLES] = {
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0, 0, 3, 4, 7, 15, 31
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};
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static const uint16_t mpc7_quant_vlc[MPC7_QUANT_VLC_TABLES][2][64 * 2] = {
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{
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{
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0x0036, 6, 0x0009, 5, 0x0020, 6, 0x0005, 5, 0x000A, 4, 0x0007, 5,
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0x0034, 6, 0x0000, 5, 0x0023, 6, 0x000A, 5, 0x0006, 4, 0x0004, 5,
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0x000B, 4, 0x0007, 3, 0x000C, 4, 0x0003, 5, 0x0007, 4, 0x000B, 5,
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0x0022, 6, 0x0001, 5, 0x0035, 6, 0x0006, 5, 0x0009, 4, 0x0002, 5,
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0x0021, 6, 0x0008, 5, 0x0037, 6
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},
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{
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0x0067, 8, 0x003E, 7, 0x00E1, 9, 0x0037, 7, 0x0003, 4, 0x0034, 7,
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0x0065, 8, 0x003C, 7, 0x00E3, 9, 0x0018, 6, 0x0000, 4, 0x003D, 7,
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0x0004, 4, 0x0001, 1, 0x0005, 4, 0x003F, 7, 0x0001, 4, 0x003B, 7,
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0x00E2, 9, 0x0039, 7, 0x0064, 8, 0x0035, 7, 0x0002, 4, 0x0036, 7,
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0x00E0, 9, 0x003A, 7, 0x0066, 8
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}
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},
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{
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{
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0x0059, 7, 0x002F, 6, 0x000F, 5, 0x0000, 5, 0x005B, 7, 0x0004, 5,
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0x0006, 4, 0x000D, 4, 0x0004, 4, 0x0005, 5, 0x0014, 5, 0x000C, 4,
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0x0004, 3, 0x000F, 4, 0x000E, 5, 0x0003, 5, 0x0003, 4, 0x000E, 4,
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0x0005, 4, 0x0001, 5, 0x005A, 7, 0x0002, 5, 0x0015, 5, 0x002E, 6,
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0x0058, 7
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},
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{
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0x0399, 10, 0x0071, 7, 0x0033, 6, 0x00E7, 8, 0x039A, 10, 0x0068, 7,
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0x001E, 5, 0x0000, 3, 0x001D, 5, 0x0069, 7, 0x0032, 6, 0x0001, 3,
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0x0002, 2, 0x0003, 3, 0x0031, 6, 0x006B, 7, 0x001B, 5, 0x0002, 3,
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0x001F, 5, 0x0070, 7, 0x0398, 10, 0x006A, 7, 0x0030, 6, 0x0072, 7,
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0x039B, 10
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}
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},
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{
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{
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0x000C, 4, 0x0004, 3, 0x0000, 2, 0x0001, 2, 0x0007, 3, 0x0005, 3, 0x000D, 4
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},
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{
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0x0004, 5, 0x0003, 4, 0x0002, 2, 0x0003, 2, 0x0001, 2, 0x0000, 3, 0x0005, 5
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}
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},
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{
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{
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0x0005, 4, 0x0000, 3, 0x0004, 3, 0x0006, 3, 0x0007, 3, 0x0005, 3, 0x0003, 3, 0x0001, 3, 0x0004, 4
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},
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{
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0x0009, 5, 0x000C, 4, 0x0003, 3, 0x0000, 2, 0x0002, 2, 0x0007, 3, 0x000D, 4, 0x0005, 4, 0x0008, 5
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}
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},
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{
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{
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0x0039, 6, 0x0017, 5, 0x0008, 4, 0x000A, 4, 0x000D, 4, 0x0000, 3,
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0x0002, 3, 0x0003, 3, 0x0001, 3, 0x000F, 4, 0x000C, 4, 0x0009, 4,
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0x001D, 5, 0x0016, 5, 0x0038, 6,
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},
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{
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0x00E5, 8, 0x0038, 6, 0x0007, 5, 0x0002, 4, 0x0000, 3, 0x0003, 3,
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0x0005, 3, 0x0006, 3, 0x0004, 3, 0x0002, 3, 0x000F, 4, 0x001D, 5,
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0x0006, 5, 0x0073, 7, 0x00E4, 8,
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},
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},
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{
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{
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0x0041, 7, 0x0006, 6, 0x002C, 6, 0x002D, 6, 0x003B, 6, 0x000D, 5,
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0x0011, 5, 0x0013, 5, 0x0017, 5, 0x0015, 5, 0x001A, 5, 0x001E, 5,
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0x0000, 4, 0x0002, 4, 0x0005, 4, 0x0007, 4, 0x0003, 4, 0x0004, 4,
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0x001F, 5, 0x001C, 5, 0x0019, 5, 0x001B, 5, 0x0018, 5, 0x0014, 5,
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0x0012, 5, 0x000C, 5, 0x0002, 5, 0x003A, 6, 0x0021, 6, 0x0007, 6,
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0x0040, 7
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},
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{
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0x1948, 13, 0x194A, 13, 0x0328, 10, 0x0195, 9, 0x00CB, 8, 0x0066, 7,
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0x0031, 6, 0x0009, 5, 0x000F, 5, 0x001F, 5, 0x0002, 4, 0x0006, 4,
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0x0008, 4, 0x000B, 4, 0x000D, 4, 0x0000, 3, 0x000E, 4, 0x000A, 4,
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0x0009, 4, 0x0005, 4, 0x0003, 4, 0x001E, 5, 0x000E, 5, 0x0008, 5,
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0x0030, 6, 0x0067, 7, 0x00C9, 8, 0x00C8, 8, 0x0653, 11, 0x1949, 13,
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0x194B, 13
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}
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},
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{
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{
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0x0067, 8, 0x0099, 8, 0x00B5, 8, 0x00E9, 8, 0x0040, 7, 0x0041, 7,
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0x004D, 7, 0x0051, 7, 0x005B, 7, 0x0071, 7, 0x0070, 7, 0x0018, 6,
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0x001D, 6, 0x0023, 6, 0x0025, 6, 0x0029, 6, 0x002C, 6, 0x002E, 6,
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0x0033, 6, 0x0031, 6, 0x0036, 6, 0x0037, 6, 0x0039, 6, 0x003C, 6,
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0x0000, 5, 0x0002, 5, 0x000A, 5, 0x0005, 5, 0x0009, 5, 0x0006, 5,
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0x000D, 5, 0x0007, 5, 0x000B, 5, 0x000F, 5, 0x0008, 5, 0x0004, 5,
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0x0003, 5, 0x0001, 5, 0x003F, 6, 0x003E, 6, 0x003D, 6, 0x0035, 6,
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0x003B, 6, 0x0034, 6, 0x0030, 6, 0x002F, 6, 0x002B, 6, 0x002A, 6,
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0x0027, 6, 0x0024, 6, 0x0021, 6, 0x001C, 6, 0x0075, 7, 0x0065, 7,
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0x0064, 7, 0x0050, 7, 0x0045, 7, 0x0044, 7, 0x0032, 7, 0x00E8, 8,
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0x00B4, 8, 0x0098, 8, 0x0066, 8
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},
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{
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0x37A4, 14, 0x37AD, 14, 0x37A6, 14, 0x37AE, 14, 0x0DEA, 12, 0x02F0, 10,
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0x02F1, 10, 0x00A0, 9, 0x00A2, 9, 0x01BC, 9, 0x007A, 8, 0x00DF, 8,
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0x003C, 7, 0x0049, 7, 0x006E, 7, 0x000E, 6, 0x0018, 6, 0x0019, 6,
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0x0022, 6, 0x0025, 6, 0x0036, 6, 0x0003, 5, 0x0009, 5, 0x000B, 5,
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0x0010, 5, 0x0013, 5, 0x0015, 5, 0x0018, 5, 0x001A, 5, 0x001D, 5,
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0x001F, 5, 0x0002, 4, 0x0000, 4, 0x001E, 5, 0x001C, 5, 0x0019, 5,
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0x0016, 5, 0x0014, 5, 0x000E, 5, 0x000D, 5, 0x0008, 5, 0x0006, 5,
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0x0002, 5, 0x002E, 6, 0x0023, 6, 0x001F, 6, 0x0015, 6, 0x000F, 6,
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0x005F, 7, 0x0048, 7, 0x0029, 7, 0x00BD, 8, 0x007B, 8, 0x0179, 9,
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0x00A1, 9, 0x037B, 10, 0x0147, 10, 0x0146, 10, 0x0DE8, 12, 0x37AF, 14,
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0x37A7, 14, 0x37AC, 14, 0x37A5, 14
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}
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}
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};
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static const float mpc7_SCF[128] = {
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307.330047607421875000, 255.999984741210937500, 213.243041992187500000, 177.627334594726562500,
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147.960128784179687500, 123.247924804687500000, 102.663139343261718750, 85.516410827636718750,
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71.233520507812500000, 59.336143493652343750, 49.425861358642578125, 41.170787811279296875,
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34.294471740722656250, 28.566631317138671875, 23.795452117919921875, 19.821151733398437500,
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16.510635375976562500, 13.753040313720703125, 11.456016540527343750, 9.542640686035156250,
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7.948835372924804688, 6.621226310729980469, 5.515353679656982422, 4.594182968139648438,
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3.826865673065185547, 3.187705039978027344, 2.655296564102172852, 2.211810588836669922,
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1.842395424842834473, 1.534679770469665527, 1.278358578681945801, 1.064847946166992188,
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0.886997759342193604, 0.738851964473724365, 0.615449428558349609, 0.512657463550567627,
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0.427033752202987671, 0.355710864067077637, 0.296300262212753296, 0.246812388300895691,
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0.205589950084686279, 0.171252459287643433, 0.142649993300437927, 0.118824683129787445,
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0.098978661000728607, 0.082447312772274017, 0.068677015602588654, 0.057206626981496811,
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0.047652013599872589, 0.039693206548690796, 0.033063672482967377, 0.027541399002075195,
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0.022941453382372856, 0.019109787419438362, 0.015918083488941193, 0.013259455561637878,
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0.011044870130717754, 0.009200163185596466, 0.007663558237254620, 0.006383595988154411,
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0.005317411851137877, 0.004429301247000694, 0.003689522389322519, 0.003073300700634718,
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0.002560000168159604, 0.002132430672645569, 0.001776273478753865, 0.001479601487517357,
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0.001232479466125369, 0.001026631565764546, 0.000855164253152907, 0.000712335284333676,
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0.000593361502978951, 0.000494258652906865, 0.000411707907915115, 0.000342944724252447,
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0.000285666319541633, 0.000237954518524930, 0.000198211506358348, 0.000165106350323185,
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0.000137530398205854, 0.000114560163638089, 0.000095426403277088, 0.000079488345363643,
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0.000066212254751008, 0.000055153526773211, 0.000045941822463647, 0.000038268648495432,
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0.000031877043511486, 0.000026552961571724, 0.000022118103515822, 0.000018423952496960,
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0.000015346795407822, 0.000012783583770215, 0.000010648477655195, 0.000008869976227288,
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0.000007388518497464, 0.000006154492893984, 0.000005126573796588, 0.000004270336830814,
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0.000003557107902452, 0.000002963002089018, 0.000002468123511790, 0.000002055899130937,
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0.000001712524181130, 0.000001426499579793, 0.000001188246528727, 0.000000989786371974,
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0.000000824472920158, 0.000000686770022185, 0.000000572066142013, 0.000000476520028769,
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0.000000396931966407, 0.000000330636652279, 0.000000275413924555, 0.000000229414467867,
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0.000000191097811353, 0.000000159180785886, 0.000000132594522029, 0.000000110448674207,
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0.000000092001613439, 0.000000076635565449, 0.000000063835940978, 0.000000053174105119,
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0.000000044293003043, 0.000000036895215771, 0.000000030733001921, 0.000000025599996789
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};
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