Hey Lu
I've managed to get the output bit working by setting a lock around:
lock
av_guess_format
avformat_alloc_context
av_new_stream
avio_open
avformat_write_header
unlock
However I have been unable to resolve issues regarding the following setup:
1 thread av_open_file, while (av_read_frame){
avcodec_decode_video,avcoded_decode_audio);
Multiple threads swscale
Multiple threads audio_resample
Multiple threads x264_encode (accessed directly, not via libav)
Multiple threads faacEncode (accessed directly, not via libav)
It seems that if I use a non libav based input (i.e. fake raw frames from a
test module) that everything works, where as if I use libav I get segfaults
(which occur in the x264_encoder). However I can still use libav to read a
file/mpeg stream if I dont have any x264 encoder threads running at the
same time.
I've spent about a week on this, inserting random locks all over the place,
with no luck, additionally from this scenario the valgrind output has been
unusable referencing many memory issues both within x264 and libav ,
generaly of the nature - Uninitialised read/write. Unfortunately it looks
like I'm going to have to "fork" my input rather then "thread" it.
Evgeny
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