mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
144 lines
4.1 KiB
144 lines
4.1 KiB
/* |
|
* Atrac 3 compatible decoder data |
|
* Copyright (c) 2006-2007 Maxim Poliakovski |
|
* Copyright (c) 2006-2007 Benjamin Larsson |
|
* |
|
* 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/atrac3data.h |
|
* Atrac 3 AKA RealAudio 8 compatible decoder data |
|
*/ |
|
|
|
#ifndef AVCODEC_ATRAC3DATA_H |
|
#define AVCODEC_ATRAC3DATA_H |
|
|
|
#include <stdint.h> |
|
|
|
/* VLC tables */ |
|
|
|
static const uint8_t huffcode1[9] = { |
|
0x0,0x4,0x5,0xC,0xD,0x1C,0x1D,0x1E,0x1F, |
|
}; |
|
|
|
static const uint8_t huffbits1[9] = { |
|
1,3,3,4,4,5,5,5,5, |
|
}; |
|
|
|
static const uint8_t huffcode2[5] = { |
|
0x0,0x4,0x5,0x6,0x7, |
|
}; |
|
|
|
static const uint8_t huffbits2[5] = { |
|
1,3,3,3,3, |
|
}; |
|
|
|
static const uint8_t huffcode3[7] = { |
|
0x0,0x4,0x5,0xC,0xD,0xE,0xF, |
|
}; |
|
|
|
static const uint8_t huffbits3[7] = { |
|
1,3,3,4,4,4,4, |
|
}; |
|
|
|
static const uint8_t huffcode4[9] = { |
|
0x0,0x4,0x5,0xC,0xD,0x1C,0x1D,0x1E,0x1F, |
|
}; |
|
|
|
static const uint8_t huffbits4[9] = { |
|
1,3,3,4,4,5,5,5,5, |
|
}; |
|
|
|
static const uint8_t huffcode5[15] = { |
|
0x0,0x2,0x3,0x8,0x9,0xA,0xB,0x1C,0x1D,0x3C,0x3D,0x3E,0x3F,0xC,0xD, |
|
}; |
|
|
|
static const uint8_t huffbits5[15] = { |
|
2,3,3,4,4,4,4,5,5,6,6,6,6,4,4 |
|
}; |
|
|
|
static const uint8_t huffcode6[31] = { |
|
0x0,0x2,0x3,0x4,0x5,0x6,0x7,0x14,0x15,0x16,0x17,0x18,0x19,0x34,0x35, |
|
0x36,0x37,0x38,0x39,0x3A,0x3B,0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F,0x8,0x9, |
|
}; |
|
|
|
static const uint8_t huffbits6[31] = { |
|
3,4,4,4,4,4,4,5,5,5,5,5,5,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,4,4 |
|
}; |
|
|
|
static const uint8_t huffcode7[63] = { |
|
0x0,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF,0x10,0x11,0x24,0x25,0x26,0x27,0x28, |
|
0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x68,0x69,0x6A,0x6B,0x6C, |
|
0x6D,0x6E,0x6F,0x70,0x71,0x72,0x73,0x74,0x75,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2, |
|
0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,0x2,0x3, |
|
}; |
|
|
|
static const uint8_t huffbits7[63] = { |
|
3,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7, |
|
7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,4,4 |
|
}; |
|
|
|
static const uint8_t huff_tab_sizes[7] = { |
|
9, 5, 7, 9, 15, 31, 63, |
|
}; |
|
|
|
static const uint8_t* const huff_codes[7] = { |
|
huffcode1,huffcode2,huffcode3,huffcode4,huffcode5,huffcode6,huffcode7, |
|
}; |
|
|
|
static const uint8_t* const huff_bits[7] = { |
|
huffbits1,huffbits2,huffbits3,huffbits4,huffbits5,huffbits6,huffbits7, |
|
}; |
|
|
|
static const uint16_t atrac3_vlc_offs[] = { |
|
0,512,1024,1536,2048,2560,3072,3584,4096 |
|
}; |
|
|
|
/* selector tables */ |
|
|
|
static const uint8_t CLCLengthTab[8] = {0, 4, 3, 3, 4, 4, 5, 6}; |
|
static const int8_t seTab_0[4] = {0, 1, -2, -1}; |
|
static const int8_t decTable1[18] = {0,0, 0,1, 0,-1, 1,0, -1,0, 1,1, 1,-1, -1,1, -1,-1}; |
|
|
|
|
|
/* tables for the scalefactor decoding */ |
|
|
|
static const float iMaxQuant[8] = { |
|
0.0, 1.0/1.5, 1.0/2.5, 1.0/3.5, 1.0/4.5, 1.0/7.5, 1.0/15.5, 1.0/31.5 |
|
}; |
|
|
|
static const uint16_t subbandTab[33] = { |
|
0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, |
|
256, 288, 320, 352, 384, 416, 448, 480, 512, 576, 640, 704, 768, 896, 1024 |
|
}; |
|
|
|
/* transform data */ |
|
|
|
static const float qmf_48tap_half[24] = { |
|
-0.00001461907, -0.00009205479, -0.000056157569, 0.00030117269, |
|
0.0002422519,-0.00085293897, -0.0005205574, 0.0020340169, |
|
0.00078333891, -0.0042153862, -0.00075614988, 0.0078402944, |
|
-0.000061169922, -0.01344162, 0.0024626821, 0.021736089, |
|
-0.007801671, -0.034090221, 0.01880949, 0.054326009, |
|
-0.043596379, -0.099384367, 0.13207909, 0.46424159 |
|
}; |
|
|
|
/* joint stereo related tables */ |
|
static const float matrixCoeffs[8] = {0.0, 2.0, 2.0, 2.0, 0.0, 0.0, 1.0, 1.0}; |
|
|
|
#endif /* AVCODEC_ATRAC3DATA_H */
|
|
|