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lavc/mjpegdec: properly set pts and duration for smvjpeg 

A single smvjpeg packet decodes into one large mjpeg frame, slices of
which are then returned as output frames. Packet duration covers all of
these slices.
This commit is contained in:
Anton Khirnov 2023-04-14 18:06:29 +02:00
parent 7ec4881f3e
commit b088d59347
1 changed files with 5 additions and 0 deletions
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5
libavcodec/mjpegdec.c
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@ -3013,6 +3013,8 @@ static void smv_process_frame(AVCodecContext *avctx, AVFrame *frame)
frame->crop_top = FFMIN(s->smv_next_frame * avctx->height, frame->height);
frame->crop_bottom = frame->height - (s->smv_next_frame + 1) * avctx->height;
if (s->smv_frame->pts != AV_NOPTS_VALUE)
s->smv_frame->pts += s->smv_frame->duration;
s->smv_next_frame = (s->smv_next_frame + 1) % s->smv_frames_per_jpeg;
if (s->smv_next_frame == 0)
@ -3044,6 +3046,9 @@ static int smvjpeg_receive_frame(AVCodecContext *avctx, AVFrame *frame)
if (!got_frame)
return AVERROR(EAGAIN);
// packet duration covers all the frames in the packet
s->smv_frame->duration /= s->smv_frames_per_jpeg;
return_frame:
av_assert0(s->smv_frame->buf[0]);
ret = av_frame_ref(frame, s->smv_frame);