diff options
Diffstat (limited to 'libavcodec/adpcm_data.c')
| -rw-r--r-- | libavcodec/adpcm_data.c | 46 |
1 files changed, 40 insertions, 6 deletions
diff --git a/libavcodec/adpcm_data.c b/libavcodec/adpcm_data.c index 3bc5de2..9c38360 100644 --- a/libavcodec/adpcm_data.c +++ b/libavcodec/adpcm_data.c @@ -1,20 +1,20 @@ /* - * Copyright (c) 2001-2003 The ffmpeg Project + * Copyright (c) 2001-2003 The FFmpeg Project * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -27,12 +27,33 @@ /* ff_adpcm_step_table[] and ff_adpcm_index_table[] are from the ADPCM reference source */ -/* This is the index table: */ +static const int8_t adpcm_index_table2[4] = { + -1, 2, + -1, 2, +}; + +static const int8_t adpcm_index_table3[8] = { + -1, -1, 1, 2, + -1, -1, 1, 2, +}; + const int8_t ff_adpcm_index_table[16] = { -1, -1, -1, -1, 2, 4, 6, 8, -1, -1, -1, -1, 2, 4, 6, 8, }; +static const int8_t adpcm_index_table5[32] = { + -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16, + -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16, +}; + +const int8_t * const ff_adpcm_index_tables[4] = { + &adpcm_index_table2[0], + &adpcm_index_table3[0], + &ff_adpcm_index_table[0], + &adpcm_index_table5[0], +}; + /** * This is the step table. Note that many programs use slight deviations from * this table, but such deviations are negligible: @@ -49,6 +70,14 @@ const int16_t ff_adpcm_step_table[89] = { 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 }; +const int16_t ff_adpcm_oki_step_table[49] = { + 16, 17, 19, 21, 23, 25, 28, 31, 34, 37, + 41, 45, 50, 55, 60, 66, 73, 80, 88, 97, + 107, 118, 130, 143, 157, 173, 190, 209, 230, 253, + 279, 307, 337, 371, 408, 449, 494, 544, 598, 658, + 724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552 +}; + /* These are for MS-ADPCM */ /* ff_adpcm_AdaptationTable[], ff_adpcm_AdaptCoeff1[], and ff_adpcm_AdaptCoeff2[] are from libsndfile */ @@ -76,3 +105,8 @@ const int8_t ff_adpcm_yamaha_difflookup[] = { 1, 3, 5, 7, 9, 11, 13, 15, -1, -3, -5, -7, -9, -11, -13, -15 }; + +const int16_t ff_adpcm_afc_coeffs[2][16] = { + { 0, 2048, 0, 1024, 4096, 3584, 3072, 4608, 4200, 4800, 5120, 2048, 1024, 64512, 64512, 63488 }, + { 0, 0, 2048, 1024, 63488, 64000, 64512, 62976, 63288, 63236, 62464, 63488, 64512, 1024, 0, 0 } +}; |
