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@ -165,6 +165,10 @@ static int adpcm_encode_init(AVCodecContext *avctx) |
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avctx->block_align = BLKSIZE; |
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/* seems frame_size isn't taken into account... have to buffer the samples :-( */ |
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break; |
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case CODEC_ID_ADPCM_IMA_QT: |
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avctx->frame_size = 64; |
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avctx->block_align = 34 * avctx->channels; |
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break; |
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case CODEC_ID_ADPCM_MS: |
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avctx->frame_size = (BLKSIZE - 7 * avctx->channels) * 2 / avctx->channels + 2; /* each 16 bits sample gives one nibble */ |
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/* and we have 7 bytes per channel overhead */ |
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@ -295,7 +299,7 @@ static void adpcm_compress_trellis(AVCodecContext *avctx, const short *samples, |
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nodes[0]->step = c->step_index; |
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nodes[0]->sample1 = c->sample1; |
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nodes[0]->sample2 = c->sample2; |
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if((version == CODEC_ID_ADPCM_IMA_WAV) || (version == CODEC_ID_ADPCM_SWF)) |
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if((version == CODEC_ID_ADPCM_IMA_WAV) || (version == CODEC_ID_ADPCM_IMA_QT) || (version == CODEC_ID_ADPCM_SWF)) |
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nodes[0]->sample1 = c->prev_sample; |
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if(version == CODEC_ID_ADPCM_MS) |
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nodes[0]->step = c->idelta; |
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@ -366,7 +370,7 @@ static void adpcm_compress_trellis(AVCodecContext *avctx, const short *samples, |
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next_##NAME:; |
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STORE_NODE(ms, FFMAX(16, (AdaptationTable[nibble] * step) >> 8)); |
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} |
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} else if((version == CODEC_ID_ADPCM_IMA_WAV)|| (version == CODEC_ID_ADPCM_SWF)) { |
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} else if((version == CODEC_ID_ADPCM_IMA_WAV)|| (version == CODEC_ID_ADPCM_IMA_QT)|| (version == CODEC_ID_ADPCM_SWF)) { |
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#define LOOP_NODES(NAME, STEP_TABLE, STEP_INDEX)\ |
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const int predictor = nodes[j]->sample1;\
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const int div = (sample - predictor) * 4 / STEP_TABLE;\
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@ -509,6 +513,36 @@ static int adpcm_encode_frame(AVCodecContext *avctx, |
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samples += 8 * avctx->channels; |
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} |
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break; |
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case CODEC_ID_ADPCM_IMA_QT: |
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{ |
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int ch, i; |
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PutBitContext pb; |
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init_put_bits(&pb, dst, buf_size*8); |
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for(ch=0; ch<avctx->channels; ch++){ |
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put_bits(&pb, 9, (c->status[ch].prev_sample + 0x10000) >> 7); |
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put_bits(&pb, 7, c->status[ch].step_index); |
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if(avctx->trellis > 0) { |
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uint8_t buf[64]; |
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adpcm_compress_trellis(avctx, samples+ch, buf, &c->status[ch], 64); |
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for(i=0; i<64; i++) |
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put_bits(&pb, 4, buf[i^1]); |
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c->status[ch].prev_sample = c->status[ch].predictor & ~0x7F; |
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} else { |
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for (i=0; i<64; i+=2){ |
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int t1, t2; |
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t1 = adpcm_ima_compress_sample(&c->status[ch], samples[avctx->channels*(i+0)+ch]); |
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t2 = adpcm_ima_compress_sample(&c->status[ch], samples[avctx->channels*(i+1)+ch]); |
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put_bits(&pb, 4, t2); |
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put_bits(&pb, 4, t1); |
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} |
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c->status[ch].prev_sample &= ~0x7F; |
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} |
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} |
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dst += put_bits_count(&pb)>>3; |
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break; |
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} |
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case CODEC_ID_ADPCM_SWF: |
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{ |
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int i; |
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@ -1588,7 +1622,7 @@ ADPCM_DECODER(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3); |
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ADPCM_DECODER(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4); |
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ADPCM_DECODER(CODEC_ID_ADPCM_IMA_EA_EACS, adpcm_ima_ea_eacs); |
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ADPCM_DECODER(CODEC_ID_ADPCM_IMA_EA_SEAD, adpcm_ima_ea_sead); |
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ADPCM_DECODER(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt); |
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ADPCM_CODEC (CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt); |
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ADPCM_DECODER(CODEC_ID_ADPCM_IMA_SMJPEG, adpcm_ima_smjpeg); |
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ADPCM_CODEC (CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav); |
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ADPCM_DECODER(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws); |
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Kostya Shishkov
17 years ago