diff options
Diffstat (limited to 'media/ffvpx/libavcodec/mpegaudiodec_common.c')
| -rw-r--r-- | media/ffvpx/libavcodec/mpegaudiodec_common.c | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/mpegaudiodec_common.c b/media/ffvpx/libavcodec/mpegaudiodec_common.c new file mode 100644 index 0000000000..5fcb39b325 --- /dev/null +++ b/media/ffvpx/libavcodec/mpegaudiodec_common.c @@ -0,0 +1,483 @@ +/* + * MPEG Audio decoder + * copyright (c) 2002 Fabrice Bellard + * + * 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 + * mpeg audio layer decoder tables. + */ + +#include <stddef.h> +#include <stdint.h> + +#include "libavutil/avassert.h" +#include "libavutil/libm.h" +#include "libavutil/thread.h" + +#include "mpegaudiodata.h" + +#include "mpegaudiodec_common_tablegen.h" + +uint16_t ff_scale_factor_modshift[64]; + +static int16_t division_tab3[1 << 6 ]; +static int16_t division_tab5[1 << 8 ]; +static int16_t division_tab9[1 << 11]; + +int16_t *const ff_division_tabs[4] = { + division_tab3, division_tab5, NULL, division_tab9 +}; + + +/*******************************************************/ +/* layer 3 tables */ + +const uint8_t ff_slen_table[2][16] = { + { 0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4 }, + { 0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3 }, +}; + +const uint8_t ff_lsf_nsf_table[6][3][4] = { + { { 6, 5, 5, 5 }, { 9, 9, 9, 9 }, { 6, 9, 9, 9 } }, + { { 6, 5, 7, 3 }, { 9, 9, 12, 6 }, { 6, 9, 12, 6 } }, + { { 11, 10, 0, 0 }, { 18, 18, 0, 0 }, { 15, 18, 0, 0 } }, + { { 7, 7, 7, 0 }, { 12, 12, 12, 0 }, { 6, 15, 12, 0 } }, + { { 6, 6, 6, 3 }, { 12, 9, 9, 6 }, { 6, 12, 9, 6 } }, + { { 8, 8, 5, 0 }, { 15, 12, 9, 0 }, { 6, 18, 9, 0 } }, +}; + +/* mpegaudio layer 3 huffman tables */ +VLC ff_huff_vlc[16]; +static VLCElem huff_vlc_tables[128 + 128 + 128 + 130 + 128 + 154 + 166 + 142 + + 204 + 190 + 170 + 542 + 460 + 662 + 414]; +VLC ff_huff_quad_vlc[2]; +static VLCElem huff_quad_vlc_tables[64 + 16]; + +static const uint8_t mpa_hufflens[] = { + /* Huffman table 1 - 4 entries */ + 3, 3, 2, 1, + /* Huffman table 2 - 9 entries */ + 6, 6, 5, 5, 5, 3, 3, 3, 1, + /* Huffman table 3 - 9 entries */ + 6, 6, 5, 5, 5, 3, 2, 2, 2, + /* Huffman table 5 - 16 entries */ + 8, 8, 7, 6, 7, 7, 7, 7, 6, 6, 6, 6, 3, 3, 3, 1, + /* Huffman table 6 - 16 entries */ + 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 2, 3, 3, + /* Huffman table 7 - 36 entries */ + 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 9, 9, 8, 9, 9, 8, 8, 7, 7, + 7, 8, 8, 8, 8, 7, 7, 7, 7, 6, 5, 6, 6, 4, 3, 3, 1, + /* Huffman table 8 - 36 entries */ + 11, 11, 10, 9, 10, 10, 9, 9, 9, 8, 8, 9, 9, 9, 9, 8, 8, 8, 7, + 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 4, 4, 2, 3, 3, 2, + /* Huffman table 9 - 36 entries */ + 9, 9, 8, 8, 9, 9, 8, 8, 8, 8, 7, 7, 7, 8, 8, 7, 7, 7, 7, + 6, 6, 6, 6, 5, 5, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, + /* Huffman table 10 - 64 entries */ + 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 11, 11, 10, 9, 9, 10, + 10, 9, 9, 10, 10, 9, 10, 10, 8, 8, 9, 9, 10, 10, 9, 9, 10, 10, 8, + 8, 8, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, + 6, 6, 6, 4, 3, 3, 1, + /* Huffman table 11 - 64 entries */ + 10, 10, 10, 10, 10, 10, 10, 11, 11, 10, 10, 9, 9, 9, 10, 10, 10, 10, 8, + 8, 9, 9, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 8, 7, 8, 8, 7, 7, + 8, 8, 8, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 7, 7, 6, 5, + 4, 5, 5, 3, 3, 3, 2, + /* Huffman table 12 - 64 entries */ + 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 9, 9, 8, 8, 8, 8, 8, 8, + 9, 9, 8, 8, 8, 8, 8, 9, 9, 7, 7, 7, 8, 8, 8, 8, 8, 8, 7, + 7, 7, 7, 8, 8, 7, 7, 7, 6, 6, 6, 6, 7, 7, 6, 5, 5, 5, 4, + 4, 5, 5, 4, 3, 3, 3, + /* Huffman table 13 - 256 entries */ + 19, 19, 18, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 15, 15, 16, + 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 15, 16, 16, 14, 14, 15, + 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 14, 13, 14, + 14, 13, 13, 14, 14, 13, 14, 14, 13, 14, 14, 13, 14, 14, 13, 13, 14, 14, 12, + 12, 12, 13, 13, 13, 13, 13, 13, 12, 13, 13, 12, 12, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 12, 12, 13, 13, 12, 12, 12, 12, 13, 13, 13, 13, 12, + 13, 13, 12, 11, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 12, 12, 11, + 11, 12, 12, 11, 12, 12, 12, 12, 11, 11, 12, 12, 11, 12, 12, 11, 12, 12, 11, + 12, 12, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 11, 11, + 10, 11, 11, 10, 11, 11, 11, 11, 10, 10, 11, 11, 10, 10, 11, 11, 11, 11, 11, + 11, 9, 9, 10, 10, 10, 10, 10, 11, 11, 9, 9, 9, 10, 10, 9, 9, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 8, 9, 9, 9, 9, 9, 9, 10, 10, 9, 9, + 9, 8, 8, 9, 9, 9, 9, 9, 9, 8, 7, 8, 8, 8, 8, 7, 7, 7, 7, + 7, 6, 6, 6, 6, 4, 4, 3, 1, + /* Huffman table 15 - 256 entries */ + 13, 13, 13, 13, 12, 13, 13, 13, 13, 13, 13, 12, 13, 13, 12, 12, 12, 12, 12, + 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, + 13, 11, 11, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 12, 12, 11, 11, 11, 11, + 11, 11, 11, 11, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, + 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 11, 11, 11, 11, 11, + 11, 10, 11, 11, 11, 11, 11, 11, 10, 10, 11, 11, 10, 10, 10, 10, 11, 11, 10, + 10, 10, 10, 10, 10, 10, 11, 11, 10, 10, 10, 10, 10, 11, 11, 9, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 10, 10, 10, 10, 9, 10, 10, 9, 10, + 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 10, 10, 9, 9, 9, + 9, 9, 9, 10, 10, 9, 9, 9, 9, 9, 9, 8, 9, 9, 9, 9, 9, 9, 9, + 9, 9, 9, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, + 8, 8, 9, 9, 8, 8, 8, 8, 8, 8, 8, 9, 9, 8, 7, 8, 8, 7, 7, + 7, 7, 8, 8, 7, 7, 7, 7, 7, 6, 7, 7, 6, 6, 7, 7, 6, 6, 6, + 5, 5, 5, 5, 5, 3, 4, 4, 3, + /* Huffman table 16 - 256 entries */ + 11, 11, 11, 11, 11, 11, 11, 11, 10, 11, 11, 11, 11, 10, 10, 10, 10, 10, 8, + 10, 10, 9, 9, 9, 9, 10, 16, 17, 17, 15, 15, 16, 16, 14, 15, 15, 14, 14, + 15, 15, 14, 14, 15, 15, 15, 15, 14, 15, 15, 14, 13, 8, 9, 9, 8, 8, 13, + 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 14, 14, 14, 14, 13, 14, 14, + 13, 13, 13, 14, 14, 14, 14, 13, 13, 14, 14, 13, 14, 14, 12, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 13, 13, 13, 13, 13, 13, 12, 13, + 13, 12, 12, 13, 13, 11, 12, 12, 12, 12, 12, 12, 12, 13, 13, 11, 12, 12, 12, + 12, 11, 12, 12, 12, 12, 12, 12, 12, 12, 11, 12, 12, 11, 11, 11, 11, 12, 12, + 12, 12, 12, 12, 12, 12, 11, 12, 12, 11, 12, 12, 11, 12, 12, 11, 12, 12, 11, + 10, 10, 11, 11, 11, 11, 11, 11, 10, 10, 11, 11, 10, 10, 11, 11, 11, 11, 11, + 11, 11, 11, 10, 11, 11, 10, 10, 10, 11, 11, 10, 10, 11, 11, 10, 10, 11, 11, + 10, 9, 9, 10, 10, 10, 10, 10, 10, 9, 9, 9, 10, 10, 9, 10, 10, 9, 9, + 8, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 9, 9, 8, 8, 7, 7, 8, 8, + 7, 6, 6, 6, 6, 4, 4, 3, 1, + /* Huffman table 24 - 256 entries */ + 8, 8, 8, 8, 8, 8, 8, 8, 7, 8, 8, 7, 7, 8, 8, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 9, 11, 11, 11, 11, 11, 11, 11, 11, + 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, + 11, 4, 11, 11, 11, 11, 12, 12, 11, 10, 11, 11, 10, 10, 10, 10, 11, 11, 10, + 10, 10, 10, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 11, 11, 10, 11, 11, 10, 9, 10, 10, 10, 10, 11, 11, 10, 9, 9, 10, + 10, 9, 10, 10, 10, 10, 9, 9, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, + 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, + 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 9, 9, 9, 10, 10, 8, 9, 9, 8, + 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 8, 8, 8, 8, 8, + 8, 9, 9, 7, 8, 8, 7, 7, 7, 7, 7, 8, 8, 7, 7, 6, 6, 7, 7, + 6, 5, 5, 6, 6, 4, 4, 4, 4, +}; + +static const uint8_t mpa_huffsymbols[] = { + /* Huffman table 1 - 4 entries */ + 0x11, 0x01, 0x10, 0x00, + /* Huffman table 2 - 9 entries */ + 0x22, 0x02, 0x12, 0x21, 0x20, 0x11, 0x01, 0x10, 0x00, + /* Huffman table 3 - 9 entries */ + 0x22, 0x02, 0x12, 0x21, 0x20, 0x10, 0x11, 0x01, 0x00, + /* Huffman table 5 - 16 entries */ + 0x33, 0x23, 0x32, 0x31, 0x13, 0x03, 0x30, 0x22, 0x12, 0x21, 0x02, 0x20, + 0x11, 0x01, 0x10, 0x00, + /* Huffman table 6 - 16 entries */ + 0x33, 0x03, 0x23, 0x32, 0x30, 0x13, 0x31, 0x22, 0x02, 0x12, 0x21, 0x20, + 0x01, 0x11, 0x10, 0x00, + /* Huffman table 7 - 36 entries */ + 0x55, 0x45, 0x54, 0x53, 0x35, 0x44, 0x25, 0x52, 0x15, 0x51, 0x05, 0x34, + 0x50, 0x43, 0x33, 0x24, 0x42, 0x14, 0x41, 0x40, 0x04, 0x23, 0x32, 0x03, + 0x13, 0x31, 0x30, 0x22, 0x12, 0x21, 0x02, 0x20, 0x11, 0x01, 0x10, 0x00, + /* Huffman table 8 - 36 entries */ + 0x55, 0x54, 0x45, 0x53, 0x35, 0x44, 0x25, 0x52, 0x05, 0x15, 0x51, 0x34, + 0x43, 0x50, 0x33, 0x24, 0x42, 0x14, 0x41, 0x04, 0x40, 0x23, 0x32, 0x13, + 0x31, 0x03, 0x30, 0x22, 0x02, 0x20, 0x12, 0x21, 0x11, 0x01, 0x10, 0x00, + /* Huffman table 9 - 36 entries */ + 0x55, 0x45, 0x35, 0x53, 0x54, 0x05, 0x44, 0x25, 0x52, 0x15, 0x51, 0x34, + 0x43, 0x50, 0x04, 0x24, 0x42, 0x33, 0x40, 0x14, 0x41, 0x23, 0x32, 0x13, + 0x31, 0x03, 0x30, 0x22, 0x02, 0x12, 0x21, 0x20, 0x11, 0x01, 0x10, 0x00, + /* Huffman table 10 - 64 entries */ + 0x77, 0x67, 0x76, 0x57, 0x75, 0x66, 0x47, 0x74, 0x56, 0x65, 0x37, 0x73, + 0x46, 0x55, 0x54, 0x63, 0x27, 0x72, 0x64, 0x07, 0x70, 0x62, 0x45, 0x35, + 0x06, 0x53, 0x44, 0x17, 0x71, 0x36, 0x26, 0x25, 0x52, 0x15, 0x51, 0x34, + 0x43, 0x16, 0x61, 0x60, 0x05, 0x50, 0x24, 0x42, 0x33, 0x04, 0x14, 0x41, + 0x40, 0x23, 0x32, 0x03, 0x13, 0x31, 0x30, 0x22, 0x12, 0x21, 0x02, 0x20, + 0x11, 0x01, 0x10, 0x00, + /* Huffman table 11 - 64 entries */ + 0x77, 0x67, 0x76, 0x75, 0x66, 0x47, 0x74, 0x57, 0x55, 0x56, 0x65, 0x37, + 0x73, 0x46, 0x45, 0x54, 0x35, 0x53, 0x27, 0x72, 0x64, 0x07, 0x71, 0x17, + 0x70, 0x36, 0x63, 0x60, 0x44, 0x25, 0x52, 0x05, 0x15, 0x62, 0x26, 0x06, + 0x16, 0x61, 0x51, 0x34, 0x50, 0x43, 0x33, 0x24, 0x42, 0x14, 0x41, 0x04, + 0x40, 0x23, 0x32, 0x13, 0x31, 0x03, 0x30, 0x22, 0x21, 0x12, 0x02, 0x20, + 0x11, 0x01, 0x10, 0x00, + /* Huffman table 12 - 64 entries */ + 0x77, 0x67, 0x76, 0x57, 0x75, 0x66, 0x47, 0x74, 0x65, 0x56, 0x37, 0x73, + 0x55, 0x27, 0x72, 0x46, 0x64, 0x17, 0x71, 0x07, 0x70, 0x36, 0x63, 0x45, + 0x54, 0x44, 0x06, 0x05, 0x26, 0x62, 0x61, 0x16, 0x60, 0x35, 0x53, 0x25, + 0x52, 0x15, 0x51, 0x34, 0x43, 0x50, 0x04, 0x24, 0x42, 0x14, 0x33, 0x41, + 0x23, 0x32, 0x40, 0x03, 0x30, 0x13, 0x31, 0x22, 0x12, 0x21, 0x02, 0x20, + 0x00, 0x11, 0x01, 0x10, + /* Huffman table 13 - 256 entries */ + 0xFE, 0xFC, 0xFD, 0xED, 0xFF, 0xEF, 0xDF, 0xEE, 0xCF, 0xDE, 0xBF, 0xFB, + 0xCE, 0xDC, 0xAF, 0xE9, 0xEC, 0xDD, 0xFA, 0xCD, 0xBE, 0xEB, 0x9F, 0xF9, + 0xEA, 0xBD, 0xDB, 0x8F, 0xF8, 0xCC, 0xAE, 0x9E, 0x8E, 0x7F, 0x7E, 0xF7, + 0xDA, 0xAD, 0xBC, 0xCB, 0xF6, 0x6F, 0xE8, 0x5F, 0x9D, 0xD9, 0xF5, 0xE7, + 0xAC, 0xBB, 0x4F, 0xF4, 0xCA, 0xE6, 0xF3, 0x3F, 0x8D, 0xD8, 0x2F, 0xF2, + 0x6E, 0x9C, 0x0F, 0xC9, 0x5E, 0xAB, 0x7D, 0xD7, 0x4E, 0xC8, 0xD6, 0x3E, + 0xB9, 0x9B, 0xAA, 0x1F, 0xF1, 0xF0, 0xBA, 0xE5, 0xE4, 0x8C, 0x6D, 0xE3, + 0xE2, 0x2E, 0x0E, 0x1E, 0xE1, 0xE0, 0x5D, 0xD5, 0x7C, 0xC7, 0x4D, 0x8B, + 0xB8, 0xD4, 0x9A, 0xA9, 0x6C, 0xC6, 0x3D, 0xD3, 0x7B, 0x2D, 0xD2, 0x1D, + 0xB7, 0x5C, 0xC5, 0x99, 0x7A, 0xC3, 0xA7, 0x97, 0x4B, 0xD1, 0x0D, 0xD0, + 0x8A, 0xA8, 0x4C, 0xC4, 0x6B, 0xB6, 0x3C, 0x2C, 0xC2, 0x5B, 0xB5, 0x89, + 0x1C, 0xC1, 0x98, 0x0C, 0xC0, 0xB4, 0x6A, 0xA6, 0x79, 0x3B, 0xB3, 0x88, + 0x5A, 0x2B, 0xA5, 0x69, 0xA4, 0x78, 0x87, 0x94, 0x77, 0x76, 0xB2, 0x1B, + 0xB1, 0x0B, 0xB0, 0x96, 0x4A, 0x3A, 0xA3, 0x59, 0x95, 0x2A, 0xA2, 0x1A, + 0xA1, 0x0A, 0x68, 0xA0, 0x86, 0x49, 0x93, 0x39, 0x58, 0x85, 0x67, 0x29, + 0x92, 0x57, 0x75, 0x38, 0x83, 0x66, 0x47, 0x74, 0x56, 0x65, 0x73, 0x19, + 0x91, 0x09, 0x90, 0x48, 0x84, 0x72, 0x46, 0x64, 0x28, 0x82, 0x18, 0x37, + 0x27, 0x17, 0x71, 0x55, 0x07, 0x70, 0x36, 0x63, 0x45, 0x54, 0x26, 0x62, + 0x35, 0x81, 0x08, 0x80, 0x16, 0x61, 0x06, 0x60, 0x53, 0x44, 0x25, 0x52, + 0x05, 0x15, 0x51, 0x34, 0x43, 0x50, 0x24, 0x42, 0x33, 0x14, 0x41, 0x04, + 0x40, 0x23, 0x32, 0x13, 0x31, 0x03, 0x30, 0x22, 0x12, 0x21, 0x02, 0x20, + 0x11, 0x01, 0x10, 0x00, + /* Huffman table 15 - 256 entries */ + 0xFF, 0xEF, 0xFE, 0xDF, 0xEE, 0xFD, 0xCF, 0xFC, 0xDE, 0xED, 0xBF, 0xFB, + 0xCE, 0xEC, 0xDD, 0xAF, 0xFA, 0xBE, 0xEB, 0xCD, 0xDC, 0x9F, 0xF9, 0xEA, + 0xBD, 0xDB, 0x8F, 0xF8, 0xCC, 0x9E, 0xE9, 0x7F, 0xF7, 0xAD, 0xDA, 0xBC, + 0x6F, 0xAE, 0x0F, 0xCB, 0xF6, 0x8E, 0xE8, 0x5F, 0x9D, 0xF5, 0x7E, 0xE7, + 0xAC, 0xCA, 0xBB, 0xD9, 0x8D, 0x4F, 0xF4, 0x3F, 0xF3, 0xD8, 0xE6, 0x2F, + 0xF2, 0x6E, 0xF0, 0x1F, 0xF1, 0x9C, 0xC9, 0x5E, 0xAB, 0xBA, 0xE5, 0x7D, + 0xD7, 0x4E, 0xE4, 0x8C, 0xC8, 0x3E, 0x6D, 0xD6, 0xE3, 0x9B, 0xB9, 0x2E, + 0xAA, 0xE2, 0x1E, 0xE1, 0x0E, 0xE0, 0x5D, 0xD5, 0x7C, 0xC7, 0x4D, 0x8B, + 0xD4, 0xB8, 0x9A, 0xA9, 0x6C, 0xC6, 0x3D, 0xD3, 0xD2, 0x2D, 0x0D, 0x1D, + 0x7B, 0xB7, 0xD1, 0x5C, 0xD0, 0xC5, 0x8A, 0xA8, 0x4C, 0xC4, 0x6B, 0xB6, + 0x99, 0x0C, 0x3C, 0xC3, 0x7A, 0xA7, 0xA6, 0xC0, 0x0B, 0xC2, 0x2C, 0x5B, + 0xB5, 0x1C, 0x89, 0x98, 0xC1, 0x4B, 0xB4, 0x6A, 0x3B, 0x79, 0xB3, 0x97, + 0x88, 0x2B, 0x5A, 0xB2, 0xA5, 0x1B, 0xB1, 0xB0, 0x69, 0x96, 0x4A, 0xA4, + 0x78, 0x87, 0x3A, 0xA3, 0x59, 0x95, 0x2A, 0xA2, 0x1A, 0xA1, 0x0A, 0xA0, + 0x68, 0x86, 0x49, 0x94, 0x39, 0x93, 0x77, 0x09, 0x58, 0x85, 0x29, 0x67, + 0x76, 0x92, 0x91, 0x19, 0x90, 0x48, 0x84, 0x57, 0x75, 0x38, 0x83, 0x66, + 0x47, 0x28, 0x82, 0x18, 0x81, 0x74, 0x08, 0x80, 0x56, 0x65, 0x37, 0x73, + 0x46, 0x27, 0x72, 0x64, 0x17, 0x55, 0x71, 0x07, 0x70, 0x36, 0x63, 0x45, + 0x54, 0x26, 0x62, 0x16, 0x06, 0x60, 0x35, 0x61, 0x53, 0x44, 0x25, 0x52, + 0x15, 0x51, 0x05, 0x50, 0x34, 0x43, 0x24, 0x42, 0x33, 0x41, 0x14, 0x04, + 0x23, 0x32, 0x40, 0x03, 0x13, 0x31, 0x30, 0x22, 0x12, 0x21, 0x02, 0x20, + 0x11, 0x01, 0x10, 0x00, + /* Huffman table 16 - 256 entries */ + 0xEF, 0xFE, 0xDF, 0xFD, 0xCF, 0xFC, 0xBF, 0xFB, 0xAF, 0xFA, 0x9F, 0xF9, + 0xF8, 0x8F, 0x7F, 0xF7, 0x6F, 0xF6, 0xFF, 0x5F, 0xF5, 0x4F, 0xF4, 0xF3, + 0xF0, 0x3F, 0xCE, 0xEC, 0xDD, 0xDE, 0xE9, 0xEA, 0xD9, 0xEE, 0xED, 0xEB, + 0xBE, 0xCD, 0xDC, 0xDB, 0xAE, 0xCC, 0xAD, 0xDA, 0x7E, 0xAC, 0xCA, 0xC9, + 0x7D, 0x5E, 0xBD, 0xF2, 0x2F, 0x0F, 0x1F, 0xF1, 0x9E, 0xBC, 0xCB, 0x8E, + 0xE8, 0x9D, 0xE7, 0xBB, 0x8D, 0xD8, 0x6E, 0xE6, 0x9C, 0xAB, 0xBA, 0xE5, + 0xD7, 0x4E, 0xE4, 0x8C, 0xC8, 0x3E, 0x6D, 0xD6, 0x9B, 0xB9, 0xAA, 0xE1, + 0xD4, 0xB8, 0xA9, 0x7B, 0xB7, 0xD0, 0xE3, 0x0E, 0xE0, 0x5D, 0xD5, 0x7C, + 0xC7, 0x4D, 0x8B, 0x9A, 0x6C, 0xC6, 0x3D, 0x5C, 0xC5, 0x0D, 0x8A, 0xA8, + 0x99, 0x4C, 0xB6, 0x7A, 0x3C, 0x5B, 0x89, 0x1C, 0xC0, 0x98, 0x79, 0xE2, + 0x2E, 0x1E, 0xD3, 0x2D, 0xD2, 0xD1, 0x3B, 0x97, 0x88, 0x1D, 0xC4, 0x6B, + 0xC3, 0xA7, 0x2C, 0xC2, 0xB5, 0xC1, 0x0C, 0x4B, 0xB4, 0x6A, 0xA6, 0xB3, + 0x5A, 0xA5, 0x2B, 0xB2, 0x1B, 0xB1, 0x0B, 0xB0, 0x69, 0x96, 0x4A, 0xA4, + 0x78, 0x87, 0xA3, 0x3A, 0x59, 0x2A, 0x95, 0x68, 0xA1, 0x86, 0x77, 0x94, + 0x49, 0x57, 0x67, 0xA2, 0x1A, 0x0A, 0xA0, 0x39, 0x93, 0x58, 0x85, 0x29, + 0x92, 0x76, 0x09, 0x19, 0x91, 0x90, 0x48, 0x84, 0x75, 0x38, 0x83, 0x66, + 0x28, 0x82, 0x47, 0x74, 0x18, 0x81, 0x80, 0x08, 0x56, 0x37, 0x73, 0x65, + 0x46, 0x27, 0x72, 0x64, 0x55, 0x07, 0x17, 0x71, 0x70, 0x36, 0x63, 0x45, + 0x54, 0x26, 0x62, 0x16, 0x61, 0x06, 0x60, 0x53, 0x35, 0x44, 0x25, 0x52, + 0x51, 0x15, 0x05, 0x34, 0x43, 0x50, 0x24, 0x42, 0x33, 0x14, 0x41, 0x04, + 0x40, 0x23, 0x32, 0x13, 0x31, 0x03, 0x30, 0x22, 0x12, 0x21, 0x02, 0x20, + 0x11, 0x01, 0x10, 0x00, + /* Huffman table 24 - 256 entries */ + 0xEF, 0xFE, 0xDF, 0xFD, 0xCF, 0xFC, 0xBF, 0xFB, 0xFA, 0xAF, 0x9F, 0xF9, + 0xF8, 0x8F, 0x7F, 0xF7, 0x6F, 0xF6, 0x5F, 0xF5, 0x4F, 0xF4, 0x3F, 0xF3, + 0x2F, 0xF2, 0xF1, 0x1F, 0xF0, 0x0F, 0xEE, 0xDE, 0xED, 0xCE, 0xEC, 0xDD, + 0xBE, 0xEB, 0xCD, 0xDC, 0xAE, 0xEA, 0xBD, 0xDB, 0xCC, 0x9E, 0xE9, 0xAD, + 0xDA, 0xBC, 0xCB, 0x8E, 0xE8, 0x9D, 0xD9, 0x7E, 0xE7, 0xAC, 0xFF, 0xCA, + 0xBB, 0x8D, 0xD8, 0x0E, 0xE0, 0x0D, 0xE6, 0x6E, 0x9C, 0xC9, 0x5E, 0xBA, + 0xE5, 0xAB, 0x7D, 0xD7, 0xE4, 0x8C, 0xC8, 0x4E, 0x2E, 0x3E, 0x6D, 0xD6, + 0xE3, 0x9B, 0xB9, 0xAA, 0xE2, 0x1E, 0xE1, 0x5D, 0xD5, 0x7C, 0xC7, 0x4D, + 0x8B, 0xB8, 0xD4, 0x9A, 0xA9, 0x6C, 0xC6, 0x3D, 0xD3, 0x2D, 0xD2, 0x1D, + 0x7B, 0xB7, 0xD1, 0x5C, 0xC5, 0x8A, 0xA8, 0x99, 0x4C, 0xC4, 0x6B, 0xB6, + 0xD0, 0x0C, 0x3C, 0xC3, 0x7A, 0xA7, 0x2C, 0xC2, 0x5B, 0xB5, 0x1C, 0x89, + 0x98, 0xC1, 0x4B, 0xC0, 0x0B, 0x3B, 0xB0, 0x0A, 0x1A, 0xB4, 0x6A, 0xA6, + 0x79, 0x97, 0xA0, 0x09, 0x90, 0xB3, 0x88, 0x2B, 0x5A, 0xB2, 0xA5, 0x1B, + 0xB1, 0x69, 0x96, 0xA4, 0x4A, 0x78, 0x87, 0x3A, 0xA3, 0x59, 0x95, 0x2A, + 0xA2, 0xA1, 0x68, 0x86, 0x77, 0x49, 0x94, 0x39, 0x93, 0x58, 0x85, 0x29, + 0x67, 0x76, 0x92, 0x19, 0x91, 0x48, 0x84, 0x57, 0x75, 0x38, 0x83, 0x66, + 0x28, 0x82, 0x18, 0x47, 0x74, 0x81, 0x08, 0x80, 0x56, 0x65, 0x17, 0x07, + 0x70, 0x73, 0x37, 0x27, 0x72, 0x46, 0x64, 0x55, 0x71, 0x36, 0x63, 0x45, + 0x54, 0x26, 0x62, 0x16, 0x61, 0x06, 0x60, 0x35, 0x53, 0x44, 0x25, 0x52, + 0x15, 0x05, 0x50, 0x51, 0x34, 0x43, 0x24, 0x42, 0x33, 0x14, 0x41, 0x04, + 0x40, 0x23, 0x32, 0x13, 0x31, 0x03, 0x30, 0x22, 0x12, 0x21, 0x02, 0x20, + 0x11, 0x01, 0x10, 0x00, +}; + +static const uint8_t mpa_huff_sizes_minus_one[] = +{ + 3, 8, 8, 15, 15, 35, 35, 35, 63, 63, 63, 255, 255, 255, 255 +}; + +const uint8_t ff_mpa_huff_data[32][2] = { +{ 0, 0 }, +{ 1, 0 }, +{ 2, 0 }, +{ 3, 0 }, +{ 0, 0 }, +{ 4, 0 }, +{ 5, 0 }, +{ 6, 0 }, +{ 7, 0 }, +{ 8, 0 }, +{ 9, 0 }, +{ 10, 0 }, +{ 11, 0 }, +{ 12, 0 }, +{ 0, 0 }, +{ 13, 0 }, +{ 14, 1 }, +{ 14, 2 }, +{ 14, 3 }, +{ 14, 4 }, +{ 14, 6 }, +{ 14, 8 }, +{ 14, 10 }, +{ 14, 13 }, +{ 15, 4 }, +{ 15, 5 }, +{ 15, 6 }, +{ 15, 7 }, +{ 15, 8 }, +{ 15, 9 }, +{ 15, 11 }, +{ 15, 13 }, +}; + + +/* huffman tables for quadrules */ +static const uint8_t mpa_quad_codes[2][16] = { + { 1, 5, 4, 5, 6, 5, 4, 4, 7, 3, 6, 0, 7, 2, 3, 1, }, + { 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, }, +}; + +static const uint8_t mpa_quad_bits[2][16] = { + { 1, 4, 4, 5, 4, 6, 5, 6, 4, 5, 5, 6, 5, 6, 6, 6, }, + { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, }, +}; + +const uint8_t ff_band_size_long[9][22] = { +{ 4, 4, 4, 4, 4, 4, 6, 6, 8, 8, 10, + 12, 16, 20, 24, 28, 34, 42, 50, 54, 76, 158, }, /* 44100 */ +{ 4, 4, 4, 4, 4, 4, 6, 6, 6, 8, 10, + 12, 16, 18, 22, 28, 34, 40, 46, 54, 54, 192, }, /* 48000 */ +{ 4, 4, 4, 4, 4, 4, 6, 6, 8, 10, 12, + 16, 20, 24, 30, 38, 46, 56, 68, 84, 102, 26, }, /* 32000 */ +{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16, + 20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, /* 22050 */ +{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16, + 18, 22, 26, 32, 38, 46, 54, 62, 70, 76, 36, }, /* 24000 */ +{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16, + 20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, /* 16000 */ +{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16, + 20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, /* 11025 */ +{ 6, 6, 6, 6, 6, 6, 8, 10, 12, 14, 16, + 20, 24, 28, 32, 38, 46, 52, 60, 68, 58, 54, }, /* 12000 */ +{ 12, 12, 12, 12, 12, 12, 16, 20, 24, 28, 32, + 40, 48, 56, 64, 76, 90, 2, 2, 2, 2, 2, }, /* 8000 */ +}; + +const uint8_t ff_band_size_short[9][13] = { +{ 4, 4, 4, 4, 6, 8, 10, 12, 14, 18, 22, 30, 56, }, /* 44100 */ +{ 4, 4, 4, 4, 6, 6, 10, 12, 14, 16, 20, 26, 66, }, /* 48000 */ +{ 4, 4, 4, 4, 6, 8, 12, 16, 20, 26, 34, 42, 12, }, /* 32000 */ +{ 4, 4, 4, 6, 6, 8, 10, 14, 18, 26, 32, 42, 18, }, /* 22050 */ +{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 32, 44, 12, }, /* 24000 */ +{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 30, 40, 18, }, /* 16000 */ +{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 30, 40, 18, }, /* 11025 */ +{ 4, 4, 4, 6, 8, 10, 12, 14, 18, 24, 30, 40, 18, }, /* 12000 */ +{ 8, 8, 8, 12, 16, 20, 24, 28, 36, 2, 2, 2, 26, }, /* 8000 */ +}; + +uint16_t ff_band_index_long[9][23]; + +const uint8_t ff_mpa_pretab[2][22] = { + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 2, 0 }, +}; + +static av_cold void mpegaudiodec_common_init_static(void) +{ + const uint8_t *huff_sym = mpa_huffsymbols, *huff_lens = mpa_hufflens; + int offset; + + /* scale factors table for layer 1/2 */ + for (int i = 0; i < 64; i++) { + int shift, mod; + /* 1.0 (i = 3) is normalized to 2 ^ FRAC_BITS */ + shift = i / 3; + mod = i % 3; + ff_scale_factor_modshift[i] = mod | (shift << 2); + } + + /* huffman decode tables */ + offset = 0; + for (int i = 0; i < 15;) { + uint16_t tmp_symbols[256]; + int nb_codes_minus_one = mpa_huff_sizes_minus_one[i]; + int j; + + for (j = 0; j <= nb_codes_minus_one; j++) { + uint8_t high = huff_sym[j] & 0xF0, low = huff_sym[j] & 0xF; + + tmp_symbols[j] = high << 1 | ((high && low) << 4) | low; + } + + ff_huff_vlc[++i].table = huff_vlc_tables + offset; + ff_huff_vlc[i].table_allocated = FF_ARRAY_ELEMS(huff_vlc_tables) - offset; + ff_init_vlc_from_lengths(&ff_huff_vlc[i], 7, j, + huff_lens, 1, tmp_symbols, 2, 2, + 0, INIT_VLC_STATIC_OVERLONG, NULL); + offset += ff_huff_vlc[i].table_size; + huff_lens += j; + huff_sym += j; + } + av_assert0(offset == FF_ARRAY_ELEMS(huff_vlc_tables)); + + offset = 0; + for (int i = 0; i < 2; i++) { + int bits = i == 0 ? 6 : 4; + ff_huff_quad_vlc[i].table = huff_quad_vlc_tables + offset; + ff_huff_quad_vlc[i].table_allocated = 1 << bits; + offset += 1 << bits; + init_vlc(&ff_huff_quad_vlc[i], bits, 16, + mpa_quad_bits[i], 1, 1, mpa_quad_codes[i], 1, 1, + INIT_VLC_USE_NEW_STATIC); + } + av_assert0(offset == FF_ARRAY_ELEMS(huff_quad_vlc_tables)); + + for (int i = 0; i < 9; i++) { + int k = 0; + for (int j = 0; j < 22; j++) { + ff_band_index_long[i][j] = k; + k += ff_band_size_long[i][j] >> 1; + } + ff_band_index_long[i][22] = k; + } + + for (int i = 0; i < 4; i++) { + if (ff_mpa_quant_bits[i] < 0) { + for (int j = 0; j < (1 << (-ff_mpa_quant_bits[i] + 1)); j++) { + int val1, val2, val3, steps; + int val = j; + steps = ff_mpa_quant_steps[i]; + val1 = val % steps; + val /= steps; + val2 = val % steps; + val3 = val / steps; + ff_division_tabs[i][j] = val1 + (val2 << 4) + (val3 << 8); + } + } + } + mpegaudiodec_common_tableinit(); +} + +av_cold void ff_mpegaudiodec_common_init_static(void) +{ + static AVOnce init_static_once = AV_ONCE_INIT; + + ff_thread_once(&init_static_once, mpegaudiodec_common_init_static); +} |