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avcodec/adpcm_ima_apm: support new extradata format

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Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Zane van Iperen 2020-06-20 10:59:14 +00:00 committed by Michael Niedermayer
parent a705bcd763
commit b35968e060
1 changed files with 12 additions and 5 deletions
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17
libavcodec/adpcm.c
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@ -162,11 +162,18 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx)
}
break;
case AV_CODEC_ID_ADPCM_IMA_APM:
if (avctx->extradata && avctx->extradata_size >= 16) {
c->status[0].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 0), 18);
c->status[0].step_index = av_clip(AV_RL32(avctx->extradata + 4), 0, 88);
c->status[1].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 8), 18);
c->status[1].step_index = av_clip(AV_RL32(avctx->extradata + 12), 0, 88);
if (avctx->extradata) {
if (avctx->extradata_size >= 28) {
c->status[0].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 16), 18);
c->status[0].step_index = av_clip(AV_RL32(avctx->extradata + 20), 0, 88);
c->status[1].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 4), 18);
c->status[1].step_index = av_clip(AV_RL32(avctx->extradata + 8), 0, 88);
} else if (avctx->extradata_size >= 16) {
c->status[0].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 0), 18);
c->status[0].step_index = av_clip(AV_RL32(avctx->extradata + 4), 0, 88);
c->status[1].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 8), 18);
c->status[1].step_index = av_clip(AV_RL32(avctx->extradata + 12), 0, 88);
}
}
break;
case AV_CODEC_ID_ADPCM_IMA_WS: