Okay, so final mail (sorry!)
I finally solved my problem, after some hours of research: for audio
files with pictures embedded in tags, they were indeed detected and set
into the first frame, but it was not an audioStream (of course!) so I
had to add an « else » clause to my decode loop, like this:
while(av_read_frame(pFormatCtx, &avpkt) >= 0) {
if(avpkt.stream_index == audioStream)
(...)
else
av_free_packet(&avpkt); /* Dropping the damn album cover */
So, thanks very much for the help!
Le 30/08/2015 17:55, Polochon Street a écrit :
Sorry for answering my own mail, but I've been finally able to obtain
a full trace, thanks to --disable-stripping and some options of a
PKGBUILD:
==3250== 4,793 (24 direct, 4,769 indirect) bytes in 1 blocks are
definitely lost in loss record 235 of 237
==3250== at 0x4C2AED6: memalign (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3250== by 0x4C2AFF1: posix_memalign (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3250== by 0x554442F: av_malloc (mem.c:97)
==3250== by 0x55445FD: av_mallocz (mem.c:254)
==3250== by 0x5533DED: av_buffer_ref (buffer.c:94)
==3250== by 0x5281FF2: avformat_queue_attached_pictures (utils.c:395)
==3250== by 0x528C767: avformat_open_input (utils.c:486)
==3250== by 0x4021DD: audio_decode (decode.c:23)
==3250== by 0x4019F7: analyze (analyze.c:30)
==3250== by 0x401865: main (gui_dummy.c:24)
It seems that I'm not freeing all of my AVFormatCtx streams properly,
but I'm using avformat_close_input(&pFormatCtx) and
avformat_free_context(pFormatCtx), am I missing something?
Le 29/08/2015 20:40, Polochon Street a écrit :
Okay, so I compiled ffmpeg with those flags:
/configure \
--prefix=/usr \
--shlibdir=/usr/lib \
--disable-static \
--enable-debug=3 \
--disable-optimizations \
--disable-stripping \
--enable-gpl \
--enable-gnutls \
--enable-libass \
--enable-libfdk-aac \
--enable-libfreetype \
--enable-libmp3lame \
--enable-libopus \
--enable-libtheora \
--enable-libvorbis \
--enable-libvpx \
--enable-libx264 \
--enable-libx265 \
--enable-nonfree \
--enable-shared \
--enable-x11grab \
And I cmake'd my program with -DCMAKE_BUILD_TYPE=Debug
-DCMAKE_C_FLAGS=-fsanitize=address, but I still only have this debug
trace:
==17320==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 664 byte(s) in 2 object(s) allocated from:
#0 0x7f5aaf43e386 in __interceptor_posix_memalign
/build/gcc-multilib/src/gcc-5.2.0/libsanitizer/asan/asan_malloc_linux.cc:105
#1 0x7f5aaea93b0f in av_malloc (/usr/lib/libavutil.so.54+0x1db0f)
Indirect leak of 4769 byte(s) in 2 object(s) allocated from:
#0 0x7f5aaf43e386 in __interceptor_posix_memalign
/build/gcc-multilib/src/gcc-5.2.0/libsanitizer/asan/asan_malloc_linux.cc:105
#1 0x7f5aaea93b0f in av_malloc (/usr/lib/libavutil.so.54+0x1db0f)
SUMMARY: AddressSanitizer: 5433 byte(s) leaked in 4 allocation(s).
The 29/08/2015 17:10, Carl Eugen Hoyos wrote:
//First step (that is practically always sufficient)
is to find out where exactly (!) the memory was
allocated: We all know that it was inside mem.c
but the important question is what called
av_malloc().
Either use a static binary or use
--disable-stripping for a useful debug build.
Carl Eugen
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