X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fadpcm.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Fadpcm.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=a9b3195d274a8f97dbd7cfc376449e48112f1128;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/adpcm.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/adpcm.c deleted file mode 100644 index a9b3195..0000000 --- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/adpcm.c +++ /dev/null @@ -1,698 +0,0 @@ -/* - * ADPCM codecs - * Copyright (c) 2001-2003 The ffmpeg Project - * - * This library 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 of the License, or (at your option) any later version. - * - * This library 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 this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include "avcodec.h" - -/** - * @file adpcm.c - * ADPCM codecs. - * First version by Francois Revol revol@free.fr - * Fringe ADPCM codecs (e.g., DK3 and DK4) - * by Mike Melanson (melanson@pcisys.net) - * - * Features and limitations: - * - * Reference documents: - * http://www.pcisys.net/~melanson/codecs/simpleaudio.html - * http://www.geocities.com/SiliconValley/8682/aud3.txt - * http://openquicktime.sourceforge.net/plugins.htm - * XAnim sources (xa_codec.c) http://www.rasnaimaging.com/people/lapus/download.html - * http://www.cs.ucla.edu/~leec/mediabench/applications.html - * SoX source code http://home.sprynet.com/~cbagwell/sox.html - */ - -#define BLKSIZE 1024 - -#define CLAMP_TO_SHORT(value) \ -if (value > 32767) \ - value = 32767; \ -else if (value < -32768) \ - value = -32768; \ - -/* step_table[] and index_table[] are from the ADPCM reference source */ -/* This is the index table: */ -static const int index_table[16] = { - -1, -1, -1, -1, 2, 4, 6, 8, - -1, -1, -1, -1, 2, 4, 6, 8, -}; - -/** - * This is the step table. Note that many programs use slight deviations from - * this table, but such deviations are negligible: - */ -static const int step_table[89] = { - 7, 8, 9, 10, 11, 12, 13, 14, 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, 1707, 1878, 2066, - 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, - 5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899, - 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 -}; - -/* Those are for MS-ADPCM */ -/* AdaptationTable[], AdaptCoeff1[], and AdaptCoeff2[] are from libsndfile */ -static const int AdaptationTable[] = { - 230, 230, 230, 230, 307, 409, 512, 614, - 768, 614, 512, 409, 307, 230, 230, 230 -}; - -static const int AdaptCoeff1[] = { - 256, 512, 0, 192, 240, 460, 392 -}; - -static const int AdaptCoeff2[] = { - 0, -256, 0, 64, 0, -208, -232 -}; - -/* end of tables */ - -typedef struct ADPCMChannelStatus { - int predictor; - short int step_index; - int step; - /* for encoding */ - int prev_sample; - - /* MS version */ - short sample1; - short sample2; - int coeff1; - int coeff2; - int idelta; -} ADPCMChannelStatus; - -typedef struct ADPCMContext { - int channel; /* for stereo MOVs, decode left, then decode right, then tell it's decoded */ - ADPCMChannelStatus status[2]; - short sample_buffer[32]; /* hold left samples while waiting for right samples */ -} ADPCMContext; - -/* XXX: implement encoding */ - -static int adpcm_encode_init(AVCodecContext *avctx) -{ - if (avctx->channels > 2) - return -1; /* only stereo or mono =) */ - switch(avctx->codec->id) { - case CODEC_ID_ADPCM_IMA_QT: - fprintf(stderr, "ADPCM: codec admcp_ima_qt unsupported for encoding !\n"); - avctx->frame_size = 64; /* XXX: can multiple of avctx->channels * 64 (left and right blocks are interleaved) */ - return -1; - break; - case CODEC_ID_ADPCM_IMA_WAV: - avctx->frame_size = (BLKSIZE - 4 * avctx->channels) * 8 / (4 * avctx->channels) + 1; /* each 16 bits sample gives one nibble */ - /* and we have 4 bytes per channel overhead */ - avctx->block_align = BLKSIZE; - /* seems frame_size isn't taken into account... have to buffer the samples :-( */ - break; - case CODEC_ID_ADPCM_MS: - fprintf(stderr, "ADPCM: codec admcp_ms unsupported for encoding !\n"); - return -1; - break; - default: - return -1; - break; - } - - avctx->coded_frame= avcodec_alloc_frame(); - avctx->coded_frame->key_frame= 1; - - return 0; -} - -static int adpcm_encode_close(AVCodecContext *avctx) -{ - av_freep(&avctx->coded_frame); - - return 0; -} - - -static inline unsigned char adpcm_ima_compress_sample(ADPCMChannelStatus *c, short sample) -{ - int step_index; - unsigned char nibble; - - int sign = 0; /* sign bit of the nibble (MSB) */ - int delta, predicted_delta; - - delta = sample - c->prev_sample; - - if (delta < 0) { - sign = 1; - delta = -delta; - } - - step_index = c->step_index; - - /* nibble = 4 * delta / step_table[step_index]; */ - nibble = (delta << 2) / step_table[step_index]; - - if (nibble > 7) - nibble = 7; - - step_index += index_table[nibble]; - if (step_index < 0) - step_index = 0; - if (step_index > 88) - step_index = 88; - - /* what the decoder will find */ - predicted_delta = ((step_table[step_index] * nibble) / 4) + (step_table[step_index] / 8); - - if (sign) - c->prev_sample -= predicted_delta; - else - c->prev_sample += predicted_delta; - - CLAMP_TO_SHORT(c->prev_sample); - - - nibble += sign << 3; /* sign * 8 */ - - /* save back */ - c->step_index = step_index; - - return nibble; -} - -static int adpcm_encode_frame(AVCodecContext *avctx, - unsigned char *frame, int buf_size, void *data) -{ - int n; - short *samples; - unsigned char *dst; - ADPCMContext *c = avctx->priv_data; - - dst = frame; - samples = (short *)data; -/* n = (BLKSIZE - 4 * avctx->channels) / (2 * 8 * avctx->channels); */ - - switch(avctx->codec->id) { - case CODEC_ID_ADPCM_IMA_QT: /* XXX: can't test until we get .mov writer */ - break; - case CODEC_ID_ADPCM_IMA_WAV: - n = avctx->frame_size / 8; - c->status[0].prev_sample = (signed short)samples[0]; /* XXX */ -/* c->status[0].step_index = 0; *//* XXX: not sure how to init the state machine */ - *dst++ = (c->status[0].prev_sample) & 0xFF; /* little endian */ - *dst++ = (c->status[0].prev_sample >> 8) & 0xFF; - *dst++ = (unsigned char)c->status[0].step_index; - *dst++ = 0; /* unknown */ - samples++; - if (avctx->channels == 2) { - c->status[1].prev_sample = (signed short)samples[0]; -/* c->status[1].step_index = 0; */ - *dst++ = (c->status[1].prev_sample) & 0xFF; - *dst++ = (c->status[1].prev_sample >> 8) & 0xFF; - *dst++ = (unsigned char)c->status[1].step_index; - *dst++ = 0; - samples++; - } - - /* stereo: 4 bytes (8 samples) for left, 4 bytes for right, 4 bytes left, ... */ - for (; n>0; n--) { - *dst = adpcm_ima_compress_sample(&c->status[0], samples[0]) & 0x0F; - *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels]) << 4) & 0xF0; - dst++; - *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 2]) & 0x0F; - *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 3]) << 4) & 0xF0; - dst++; - *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 4]) & 0x0F; - *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 5]) << 4) & 0xF0; - dst++; - *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 6]) & 0x0F; - *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 7]) << 4) & 0xF0; - dst++; - /* right channel */ - if (avctx->channels == 2) { - *dst = adpcm_ima_compress_sample(&c->status[1], samples[1]); - *dst |= adpcm_ima_compress_sample(&c->status[1], samples[3]) << 4; - dst++; - *dst = adpcm_ima_compress_sample(&c->status[1], samples[5]); - *dst |= adpcm_ima_compress_sample(&c->status[1], samples[7]) << 4; - dst++; - *dst = adpcm_ima_compress_sample(&c->status[1], samples[9]); - *dst |= adpcm_ima_compress_sample(&c->status[1], samples[11]) << 4; - dst++; - *dst = adpcm_ima_compress_sample(&c->status[1], samples[13]); - *dst |= adpcm_ima_compress_sample(&c->status[1], samples[15]) << 4; - dst++; - } - samples += 8 * avctx->channels; - } - break; - default: - return -1; - } - return dst - frame; -} - -static int adpcm_decode_init(AVCodecContext * avctx) -{ - ADPCMContext *c = avctx->priv_data; - - c->channel = 0; - c->status[0].predictor = c->status[1].predictor = 0; - c->status[0].step_index = c->status[1].step_index = 0; - c->status[0].step = c->status[1].step = 0; - - switch(avctx->codec->id) { - default: - break; - } - return 0; -} - -static inline short adpcm_ima_expand_nibble(ADPCMChannelStatus *c, char nibble) -{ - int step_index; - int predictor; - int sign, delta, diff, step; - - step = step_table[c->step_index]; - step_index = c->step_index + index_table[(unsigned)nibble]; - if (step_index < 0) step_index = 0; - else if (step_index > 88) step_index = 88; - - sign = nibble & 8; - delta = nibble & 7; - /* perform direct multiplication instead of series of jumps proposed by - * the reference ADPCM implementation since modern CPUs can do the mults - * quickly enough */ - diff = ((2 * delta + 1) * step) >> 3; - predictor = c->predictor; - if (sign) predictor -= diff; - else predictor += diff; - - CLAMP_TO_SHORT(predictor); - c->predictor = predictor; - c->step_index = step_index; - - return (short)predictor; -} - -static inline short adpcm_4xa_expand_nibble(ADPCMChannelStatus *c, char nibble) -{ - int step_index; - int predictor; - int sign, delta, diff, step; - - step = step_table[c->step_index]; - step_index = c->step_index + index_table[(unsigned)nibble]; - if (step_index < 0) step_index = 0; - else if (step_index > 88) step_index = 88; - - sign = nibble & 8; - delta = nibble & 7; - - diff = (delta*step + (step>>1))>>3; // difference to code above - - predictor = c->predictor; - if (sign) predictor -= diff; - else predictor += diff; - - CLAMP_TO_SHORT(predictor); - c->predictor = predictor; - c->step_index = step_index; - - return (short)predictor; -} - -static inline short adpcm_ms_expand_nibble(ADPCMChannelStatus *c, char nibble) -{ - int predictor; - - predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 256; - predictor += (signed)((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta; - CLAMP_TO_SHORT(predictor); - - c->sample2 = c->sample1; - c->sample1 = predictor; - c->idelta = (AdaptationTable[(int)nibble] * c->idelta) / 256; - if (c->idelta < 16) c->idelta = 16; - - return (short)predictor; -} - -/* DK3 ADPCM support macro */ -#define DK3_GET_NEXT_NIBBLE() \ - if (decode_top_nibble_next) \ - { \ - nibble = (last_byte >> 4) & 0x0F; \ - decode_top_nibble_next = 0; \ - } \ - else \ - { \ - last_byte = *src++; \ - if (src >= buf + buf_size) break; \ - nibble = last_byte & 0x0F; \ - decode_top_nibble_next = 1; \ - } - -static int adpcm_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - uint8_t *buf, int buf_size) -{ - ADPCMContext *c = avctx->priv_data; - ADPCMChannelStatus *cs; - int n, m, channel, i; - int block_predictor[2]; - short *samples; - uint8_t *src; - int st; /* stereo */ - - /* DK3 ADPCM accounting variables */ - unsigned char last_byte = 0; - unsigned char nibble; - int decode_top_nibble_next = 0; - int diff_channel; - - samples = data; - src = buf; - - st = avctx->channels == 2; - - switch(avctx->codec->id) { - case CODEC_ID_ADPCM_IMA_QT: - n = (buf_size - 2);/* >> 2*avctx->channels;*/ - channel = c->channel; - cs = &(c->status[channel]); - /* (pppppp) (piiiiiii) */ - - /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */ - cs->predictor = (*src++) << 8; - cs->predictor |= (*src & 0x80); - cs->predictor &= 0xFF80; - - /* sign extension */ - if(cs->predictor & 0x8000) - cs->predictor -= 0x10000; - - CLAMP_TO_SHORT(cs->predictor); - - cs->step_index = (*src++) & 0x7F; - - if (cs->step_index > 88) fprintf(stderr, "ERROR: step_index = %i\n", cs->step_index); - if (cs->step_index > 88) cs->step_index = 88; - - cs->step = step_table[cs->step_index]; - - if (st && channel) - samples++; - - *samples++ = cs->predictor; - samples += st; - - for(m=32; n>0 && m>0; n--, m--) { /* in QuickTime, IMA is encoded by chuncks of 34 bytes (=64 samples) */ - *samples = adpcm_ima_expand_nibble(cs, src[0] & 0x0F); - samples += avctx->channels; - *samples = adpcm_ima_expand_nibble(cs, (src[0] >> 4) & 0x0F); - samples += avctx->channels; - src ++; - } - - if(st) { /* handle stereo interlacing */ - c->channel = (channel + 1) % 2; /* we get one packet for left, then one for right data */ - if(channel == 0) { /* wait for the other packet before outputing anything */ - *data_size = 0; - return src - buf; - } - } - break; - case CODEC_ID_ADPCM_IMA_WAV: - if (buf_size > BLKSIZE) { - if (avctx->block_align != 0) - buf_size = avctx->block_align; - else - buf_size = BLKSIZE; - } - // XXX: do as per-channel loop - cs = &(c->status[0]); - cs->predictor = (*src++) & 0x0FF; - cs->predictor |= ((*src++) << 8) & 0x0FF00; - if(cs->predictor & 0x8000) - cs->predictor -= 0x10000; - CLAMP_TO_SHORT(cs->predictor); - - // XXX: is this correct ??: *samples++ = cs->predictor; - - cs->step_index = *src++; - if (cs->step_index < 0) cs->step_index = 0; - if (cs->step_index > 88) cs->step_index = 88; - if (*src++) fprintf(stderr, "unused byte should be null !!\n"); /* unused */ - - if (st) { - cs = &(c->status[1]); - cs->predictor = (*src++) & 0x0FF; - cs->predictor |= ((*src++) << 8) & 0x0FF00; - if(cs->predictor & 0x8000) - cs->predictor -= 0x10000; - CLAMP_TO_SHORT(cs->predictor); - - // XXX: is this correct ??: *samples++ = cs->predictor; - - cs->step_index = *src++; - if (cs->step_index < 0) cs->step_index = 0; - if (cs->step_index > 88) cs->step_index = 88; - src++; /* if != 0 -> out-of-sync */ - } - - for(m=4; src < (buf + buf_size);) { - *samples++ = adpcm_ima_expand_nibble(&c->status[0], src[0] & 0x0F); - if (st) - *samples++ = adpcm_ima_expand_nibble(&c->status[1], src[4] & 0x0F); - *samples++ = adpcm_ima_expand_nibble(&c->status[0], (src[0] >> 4) & 0x0F); - if (st) { - *samples++ = adpcm_ima_expand_nibble(&c->status[1], (src[4] >> 4) & 0x0F); - if (!--m) { - m=4; - src+=4; - } - } - src++; - } - break; - case CODEC_ID_ADPCM_4XM: - cs = &(c->status[0]); - c->status[0].predictor= (int16_t)(src[0] + (src[1]<<8)); src+=2; - if(st){ - c->status[1].predictor= (int16_t)(src[0] + (src[1]<<8)); src+=2; - } - c->status[0].step_index= (int16_t)(src[0] + (src[1]<<8)); src+=2; - if(st){ - c->status[1].step_index= (int16_t)(src[0] + (src[1]<<8)); src+=2; - } -// if (cs->step_index < 0) cs->step_index = 0; -// if (cs->step_index > 88) cs->step_index = 88; - - m= (buf_size - (src - buf))>>st; -//printf("%d %d %d %d\n", st, m, c->status[0].predictor, c->status[0].step_index); - //FIXME / XXX decode chanels individual & interleave samples - for(i=0; istatus[0], src[i] & 0x0F); - if (st) - *samples++ = adpcm_4xa_expand_nibble(&c->status[1], src[i+m] & 0x0F); - *samples++ = adpcm_4xa_expand_nibble(&c->status[0], src[i] >> 4); - if (st) - *samples++ = adpcm_4xa_expand_nibble(&c->status[1], src[i+m] >> 4); - } - - src += m< BLKSIZE) { - if (avctx->block_align != 0) - buf_size = avctx->block_align; - else - buf_size = BLKSIZE; - } - n = buf_size - 7 * avctx->channels; - if (n < 0) - return -1; - block_predictor[0] = (*src++); /* should be bound */ - block_predictor[0] = (block_predictor[0] < 0)?(0):((block_predictor[0] > 7)?(7):(block_predictor[0])); - block_predictor[1] = 0; - if (st) - block_predictor[1] = (*src++); - block_predictor[1] = (block_predictor[1] < 0)?(0):((block_predictor[1] > 7)?(7):(block_predictor[1])); - c->status[0].idelta = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00)); - if (c->status[0].idelta & 0x08000) - c->status[0].idelta -= 0x10000; - src+=2; - if (st) - c->status[1].idelta = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00)); - if (st && c->status[1].idelta & 0x08000) - c->status[1].idelta |= 0xFFFF0000; - if (st) - src+=2; - c->status[0].coeff1 = AdaptCoeff1[block_predictor[0]]; - c->status[0].coeff2 = AdaptCoeff2[block_predictor[0]]; - c->status[1].coeff1 = AdaptCoeff1[block_predictor[1]]; - c->status[1].coeff2 = AdaptCoeff2[block_predictor[1]]; - - c->status[0].sample1 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00)); - src+=2; - if (st) c->status[1].sample1 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00)); - if (st) src+=2; - c->status[0].sample2 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00)); - src+=2; - if (st) c->status[1].sample2 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00)); - if (st) src+=2; - - *samples++ = c->status[0].sample1; - if (st) *samples++ = c->status[1].sample1; - *samples++ = c->status[0].sample2; - if (st) *samples++ = c->status[1].sample2; - for(;n>0;n--) { - *samples++ = adpcm_ms_expand_nibble(&c->status[0], (src[0] >> 4) & 0x0F); - *samples++ = adpcm_ms_expand_nibble(&c->status[st], src[0] & 0x0F); - src ++; - } - break; - case CODEC_ID_ADPCM_IMA_DK4: - if (buf_size > BLKSIZE) { - if (avctx->block_align != 0) - buf_size = avctx->block_align; - else - buf_size = BLKSIZE; - } - c->status[0].predictor = (src[0] | (src[1] << 8)); - c->status[0].step_index = src[2]; - src += 4; - if(c->status[0].predictor & 0x8000) - c->status[0].predictor -= 0x10000; - *samples++ = c->status[0].predictor; - if (st) { - c->status[1].predictor = (src[0] | (src[1] << 8)); - c->status[1].step_index = src[2]; - src += 4; - if(c->status[1].predictor & 0x8000) - c->status[1].predictor -= 0x10000; - *samples++ = c->status[1].predictor; - } - while (src < buf + buf_size) { - - /* take care of the top nibble (always left or mono channel) */ - *samples++ = adpcm_ima_expand_nibble(&c->status[0], - (src[0] >> 4) & 0x0F); - - /* take care of the bottom nibble, which is right sample for - * stereo, or another mono sample */ - if (st) - *samples++ = adpcm_ima_expand_nibble(&c->status[1], - src[0] & 0x0F); - else - *samples++ = adpcm_ima_expand_nibble(&c->status[0], - src[0] & 0x0F); - - src++; - } - break; - case CODEC_ID_ADPCM_IMA_DK3: - if (buf_size > BLKSIZE) { - if (avctx->block_align != 0) - buf_size = avctx->block_align; - else - buf_size = BLKSIZE; - } - c->status[0].predictor = (src[10] | (src[11] << 8)); - c->status[1].predictor = (src[12] | (src[13] << 8)); - c->status[0].step_index = src[14]; - c->status[1].step_index = src[15]; - /* sign extend the predictors */ - if(c->status[0].predictor & 0x8000) - c->status[0].predictor -= 0x10000; - if(c->status[1].predictor & 0x8000) - c->status[1].predictor -= 0x10000; - src += 16; - diff_channel = c->status[1].predictor; - - /* the DK3_GET_NEXT_NIBBLE macro issues the break statement when - * the buffer is consumed */ - while (1) { - - /* for this algorithm, c->status[0] is the sum channel and - * c->status[1] is the diff channel */ - - /* process the first predictor of the sum channel */ - DK3_GET_NEXT_NIBBLE(); - adpcm_ima_expand_nibble(&c->status[0], nibble); - - /* process the diff channel predictor */ - DK3_GET_NEXT_NIBBLE(); - adpcm_ima_expand_nibble(&c->status[1], nibble); - - /* process the first pair of stereo PCM samples */ - diff_channel = (diff_channel + c->status[1].predictor) / 2; - *samples++ = c->status[0].predictor + c->status[1].predictor; - *samples++ = c->status[0].predictor - c->status[1].predictor; - - /* process the second predictor of the sum channel */ - DK3_GET_NEXT_NIBBLE(); - adpcm_ima_expand_nibble(&c->status[0], nibble); - - /* process the second pair of stereo PCM samples */ - diff_channel = (diff_channel + c->status[1].predictor) / 2; - *samples++ = c->status[0].predictor + c->status[1].predictor; - *samples++ = c->status[0].predictor - c->status[1].predictor; - } - break; - default: - *data_size = 0; - return -1; - } - *data_size = (uint8_t *)samples - (uint8_t *)data; - return src - buf; -} - -#define ADPCM_CODEC(id, name) \ -AVCodec name ## _encoder = { \ - #name, \ - CODEC_TYPE_AUDIO, \ - id, \ - sizeof(ADPCMContext), \ - adpcm_encode_init, \ - adpcm_encode_frame, \ - adpcm_encode_close, \ - NULL, \ -}; \ -AVCodec name ## _decoder = { \ - #name, \ - CODEC_TYPE_AUDIO, \ - id, \ - sizeof(ADPCMContext), \ - adpcm_decode_init, \ - NULL, \ - NULL, \ - adpcm_decode_frame, \ -}; - -ADPCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt); -ADPCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav); -ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3); -ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4); -ADPCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms); -ADPCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm); - -#undef ADPCM_CODEC