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fftools/ffmpeg: Avoid allocating+freeing frame, check allocations 

Fixes a potential crash upon av_frame_alloc() failure.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-12-03 20:30:33 +01:00
parent 2d0bfbd0fa
commit b886512ef2
2 changed files with 8 additions and 7 deletions
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11
fftools/ffmpeg.c
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@ -1291,7 +1291,7 @@ static void do_video_out(OutputFile *of,
int forced_keyframe = 0;
double pts_time;
if (i < nb0_frames && ost->last_frame) {
if (i < nb0_frames && ost->last_frame->buf[0]) {
in_picture = ost->last_frame;
} else
in_picture = next_picture;
@ -1419,13 +1419,10 @@ static void do_video_out(OutputFile *of,
do_video_stats(ost, frame_size);
}
if (!ost->last_frame)
ost->last_frame = av_frame_alloc();
av_frame_unref(ost->last_frame);
if (next_picture && ost->last_frame)
av_frame_ref(ost->last_frame, next_picture);
else
av_frame_free(&ost->last_frame);
if (next_picture)
if (av_frame_ref(ost->last_frame, next_picture) < 0)
goto error;
return;
error:

4
fftools/ffmpeg_opt.c
View File

@ -1905,6 +1905,10 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc, in
ost->avfilter = get_ost_filters(o, oc, ost);
if (!ost->avfilter)
exit_program(1);
ost->last_frame = av_frame_alloc();
if (!ost->last_frame)
exit_program(1);
} else {
MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
}