Re: [FFmpeg-devel] [PATCH v2] avcodec/av1dec: convert to receive_frame()

[James Almer <jamrial@gmail.com>]

On 5/20/2023 2:23 PM, Michael Niedermayer wrote:
> On Fri, May 19, 2023 at 10:50:57PM -0300, James Almer wrote:
>> Signed-off-by: James Almer <jamrial@gmail.com>
>> ---
>>   libavcodec/av1dec.c | 75 +++++++++++++++++++++++++++++++++------------
>>   libavcodec/av1dec.h |  4 +++
>>   2 files changed, 60 insertions(+), 19 deletions(-)
> 
> Crashes intermittently (so maybe its not this one)
> 
> [av1 @ 0x562d7e65db40] No sequence header available.
> [av1 @ 0x562d7e65db40] Invalid OBU length: 1071323, but only 768 bytes remaining in fragment.
> [av1 @ 0x562d7e65db40] Failed to parse temporal unit.
> [av1 @ 0x562d7e65db40] Invalid OBU length: 1071323, but only 768 bytes remaining in fragment.
> [av1 @ 0x562d7e65db40] Failed to read packet.
> Assertion i <= s->current_obu.nb_units failed at libavcodec/av1dec.c:1415
> Aborted (core dumped)
> 
> #0  0x00007fffed2e2e87 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
> #1  0x00007fffed2e47f1 in __GI_abort () at abort.c:79
> #2  0x0000555555bfcf4a in av1_receive_frame ()
> #3  0x0000555555c7d814 in decode_receive_frame_internal ()
> #4  0x0000555555c7e4c0 in avcodec_send_packet ()
> #5  0x0000555555a5d633 in try_decode_frame ()
> #6  0x0000555555a628ff in avformat_find_stream_info ()
> #7  0x000055555574578e in ifile_open ()
> #8  0x000055555575c99c in open_files.isra ()
> #9  0x000055555575ddb5 in ffmpeg_parse_options ()
> #10 0x000055555573df61 in main ()
> 
> if i build with full debug symbols it doesnt crash :)
> ill mail you the file

"i" was uninitialized because the for loop was never reached. Fixed locally.

> 
> 
> [...]
> 
> 
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