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Code Issues Releases Activity

avcodec/crystalhd: Another attempt at using mpeg4_unpack_bframes bsf

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I tried doing this before, but it resulted in weird behaviour with
certain samples. I want to say I think I've got it sorted out now,
and the new autobsf stuff makes it trivial to turn on.

The native support for packed bframes is buggy and I think buggy
in ways beyond what I already try to account for, so this should be
a net improvements.
This commit is contained in:
Philip Langdale 2017-04-23 15:31:55 -07:00
parent 181aa1be49
commit dd49eff930
1 changed files with 1 additions and 27 deletions
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28
libavcodec/crystalhd.c
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@ -101,7 +101,6 @@ typedef struct {
/* Options */
uint32_t sWidth;
uint8_t bframe_bug;
} CHDContext;
static const AVOption options[] = {
@ -631,16 +630,6 @@ static inline CopyRet receive_frame(AVCodecContext *avctx,
} else if (ret == BC_STS_SUCCESS) {
int copy_ret = -1;
if (output.PoutFlags & BC_POUT_FLAGS_PIB_VALID) {
if (avctx->codec->id == AV_CODEC_ID_MPEG4 &&
output.PicInfo.timeStamp == 0 && priv->bframe_bug) {
if (!priv->bframe_bug) {
av_log(avctx, AV_LOG_VERBOSE,
"CrystalHD: Not returning packed frame twice.\n");
}
DtsReleaseOutputBuffs(dev, NULL, FALSE);
return RET_COPY_AGAIN;
}
print_frame_info(priv, &output);
copy_ret = copy_frame(avctx, &output, frame, got_frame);
@ -675,21 +664,6 @@ static int crystalhd_decode_packet(AVCodecContext *avctx, const AVPacket *avpkt)
if (avpkt && avpkt->size) {
uint64_t pts;
if (!priv->bframe_bug && (avpkt->size == 6 || avpkt->size == 7)) {
/*
* Drop frames trigger the bug
*/
av_log(avctx, AV_LOG_WARNING,
"CrystalHD: Enabling work-around for packed b-frame bug\n");
priv->bframe_bug = 1;
} else if (priv->bframe_bug && avpkt->size == 8) {
/*
* Delay frames don't trigger the bug
*/
av_log(avctx, AV_LOG_WARNING,
"CrystalHD: Disabling work-around for packed b-frame bug\n");
priv->bframe_bug = 0;
}
/*
* Despite being notionally opaque, either libcrystalhd or
@ -825,7 +799,7 @@ DEFINE_CRYSTALHD_DECODER(mpeg2, MPEG2VIDEO, NULL)
#endif
#if CONFIG_MPEG4_CRYSTALHD_DECODER
DEFINE_CRYSTALHD_DECODER(mpeg4, MPEG4, NULL)
DEFINE_CRYSTALHD_DECODER(mpeg4, MPEG4, "mpeg4_unpack_bframes")
#endif
#if CONFIG_MSMPEG4_CRYSTALHD_DECODER