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avformat: Avoid allocation for AVFormatInternal

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Do this by allocating AVFormatContext together with the data that is
currently in AVFormatInternal; or rather: Put AVFormatContext at the
beginning of a new structure called FFFormatContext (which encompasses
more than just the internal fields and is a proper context in its own
right, hence the name) and remove AVFormatInternal altogether.

The biggest simplifications occured in avformat_alloc_context(), where
one can now simply call avformat_free_context() in case of errors.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2021-08-24 14:58:07 +02:00
parent dfbf41775c
commit fed0282508
32 changed files with 135 additions and 138 deletions
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libavformat/mpegts.c
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@@ -3070,7 +3070,7 @@ static int mpegts_read_header(AVFormatContext *s)
int64_t pos, probesize = s->probesize;
int64_t seekback = FFMAX(s->probesize, (int64_t)ts->resync_size + PROBE_PACKET_MAX_BUF);
s->internal->prefer_codec_framerate = 1;
ffformatcontext(s)->prefer_codec_framerate = 1;
if (ffio_ensure_seekback(pb, seekback) < 0)
av_log(s, AV_LOG_WARNING, "Failed to allocate buffers for seekback\n");