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avcodec/wmaprodec: do not force extradata presence for XMA

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Mainly useful for supporting decoding of headerless files.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2017-01-11 11:38:56 +01:00
parent 45cd50e5e2
commit 107b3064d8
1 changed files with 3 additions and 3 deletions
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6
libavcodec/wmaprodec.c
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@ -322,12 +322,12 @@ static av_cold int decode_init(AVCodecContext *avctx)
for (i = 0; i < avctx->extradata_size; i++)
av_log(avctx, AV_LOG_DEBUG, "[%x] ", avctx->extradata[i]);
av_log(avctx, AV_LOG_DEBUG, "\n");
if (avctx->codec_id == AV_CODEC_ID_XMA2 && avctx->extradata_size >= 34) {
if (avctx->codec_id == AV_CODEC_ID_XMA2 && (!avctx->extradata || avctx->extradata_size >= 6)) {
s->decode_flags = 0x10d6;
channel_mask = AV_RL32(edata_ptr+2);
channel_mask = avctx->extradata ? AV_RL32(edata_ptr+2) : 0;
s->bits_per_sample = 16;
} else if (avctx->codec_id == AV_CODEC_ID_XMA1 && avctx->extradata_size >= 28) {
} else if (avctx->codec_id == AV_CODEC_ID_XMA1) {
s->decode_flags = 0x10d6;
s->bits_per_sample = 16;
channel_mask = 0;