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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2012-08-28 23:58:08 -0400 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2012-10-09 09:03:52 -0400 |
| commit | 1b9ac7290868a24b651f9143c4b6181e998a95f5 (patch) | |
| tree | a73598718039471ea5f700bb68fc223fb1af2db3 /libavcodec/adpcm.c | |
| parent | 176db0b8928a1f1099a072604d512bf44de01404 (diff) | |
| download | ffmpeg-1b9ac7290868a24b651f9143c4b6181e998a95f5.tar.gz | |
adpcmdec: use planar sample format for adpcm_ima_wav
Diffstat (limited to 'libavcodec/adpcm.c')
| -rw-r--r-- | libavcodec/adpcm.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index 2137c309a1..35be5d07a5 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -137,6 +137,7 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx) switch(avctx->codec->id) { case AV_CODEC_ID_ADPCM_IMA_QT: + case AV_CODEC_ID_ADPCM_IMA_WAV: avctx->sample_fmt = AV_SAMPLE_FMT_S16P; break; default: @@ -657,7 +658,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data, case AV_CODEC_ID_ADPCM_IMA_WAV: for(i=0; i<avctx->channels; i++){ cs = &(c->status[i]); - cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16); + cs->predictor = samples_p[i][0] = sign_extend(bytestream2_get_le16u(&gb), 16); cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16); if (cs->step_index > 88u){ @@ -667,19 +668,16 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data, } } - for (n = (nb_samples - 1) / 8; n > 0; n--) { + for (n = 0; n < (nb_samples - 1) / 8; n++) { for (i = 0; i < avctx->channels; i++) { cs = &c->status[i]; - for (m = 0; m < 4; m++) { + samples = &samples_p[i][1 + n * 8]; + for (m = 0; m < 8; m += 2) { int v = bytestream2_get_byteu(&gb); - *samples = adpcm_ima_expand_nibble(cs, v & 0x0F, 3); - samples += avctx->channels; - *samples = adpcm_ima_expand_nibble(cs, v >> 4 , 3); - samples += avctx->channels; + samples[m ] = adpcm_ima_expand_nibble(cs, v & 0x0F, 3); + samples[m + 1] = adpcm_ima_expand_nibble(cs, v >> 4 , 3); } - samples -= 8 * avctx->channels - 1; } - samples += 7 * avctx->channels; } break; case AV_CODEC_ID_ADPCM_4XM: @@ -1308,7 +1306,7 @@ ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_SEAD, sample_fmts_s16, adpcm_ima_ea_sead ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ISS, sample_fmts_s16, adpcm_ima_iss, "ADPCM IMA Funcom ISS"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16p, adpcm_ima_qt, "ADPCM IMA QuickTime"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG"); -ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, sample_fmts_s16, adpcm_ima_wav, "ADPCM IMA WAV"); +ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, sample_fmts_s16p, adpcm_ima_wav, "ADPCM IMA WAV"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WS, sample_fmts_s16, adpcm_ima_ws, "ADPCM IMA Westwood"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_MS, sample_fmts_s16, adpcm_ms, "ADPCM Microsoft"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_2, sample_fmts_s16, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit"); |