New submission from Vladimir Eremeev <[EMAIL PROTECTED]>:
Below is the simple code, reading from a file and dropping
read data. The file contains a dump of the MPEG2 Transport
Stream.
Unfortunately, I cannot upload a file with the transport stream, as the
host upload.mplayer.hu cannot be resolved.
However, this is the same file as I've uploaded in relation to the
issue 430.
The C source is also the same.
Valgrind output:
$ valgrind --tool=memcheck --leak-check=full --show-reachable=yes --
leak-resolution=high ./
mf_read
==4768== Memcheck, a memory error
detector.
==4768== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et
al.
==4768== Using LibVEX rev 1804, a library for dynamic binary
translation.
==4768== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks
LLP.
==4768== Using valgrind-3.3.0-Debian, a dynamic binary instrumentation
framework.
==4768== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et
al.
==4768== For more details, rerun with: -
v
==4768==
input format: mpegts
(0x476ef20)
av_open_input_stream,
ret=0
av_find_stream_info,
ret=0
packets read:
1000
finished
==4768==
==4768== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 27 from
1)
==4768== malloc/free: in use at exit: 32,320 bytes in 101
blocks.
==4768== malloc/free: 41,589 allocs, 41,488 frees, 22,349,336 bytes
allocated.
==4768== For counts of detected errors, rerun with: -
v
==4768== searching for pointers to 101 not-freed
blocks.
==4768== checked 2,882,520
bytes.
==4768==
==4768== 960 bytes in 3 blocks are definitely lost in loss record 1 of
3
==4768== at 0x4021A92: memalign
(vg_replace_malloc.c:460)
==4768== by 0x477753A: av_malloc
(mem.c:61)
==4768== by 0x47775C8: av_mallocz
(mem.c:134)
==4768== by 0x47246D5: add_pes_stream
(mpegts.c:1015)
==4768== by 0x4723B35: pmt_cb
(mpegts.c:640)
==4768== by 0x4722F61: write_section_data
(mpegts.c:272)
==4768== by 0x47249F8: handle_packet
(mpegts.c:1095)
==4768== by 0x4724C21: handle_packets
(mpegts.c:1169)
==4768== by 0x472500F: mpegts_read_header
(mpegts.c:1269)
==4768== by 0x46D876F: av_open_input_stream
(utils.c:469)
==4768== by 0x46D8A95: av_open_input_file
(utils.c:565)
==4768== by 0x8048878: main
(mf_read.c:31)
==4768==
==4768==
==4768== 10,880 bytes in 34 blocks are definitely lost in loss record 2
of 3
==4768== at 0x4021A92: memalign (vg_replace_malloc.c:460)
==4768== by 0x477753A: av_malloc (mem.c:61)
==4768== by 0x47775C8: av_mallocz (mem.c:134)
==4768== by 0x47246D5: add_pes_stream (mpegts.c:1015)
==4768== by 0x4723B35: pmt_cb (mpegts.c:640)
==4768== by 0x4722F61: write_section_data (mpegts.c:272)
==4768== by 0x47249BF: handle_packet (mpegts.c:1090)
==4768== by 0x4724C21: handle_packets (mpegts.c:1169)
==4768== by 0x472500F: mpegts_read_header (mpegts.c:1269)
==4768== by 0x46D876F: av_open_input_stream (utils.c:469)
==4768== by 0x46D8A95: av_open_input_file (utils.c:565)
==4768== by 0x8048878: main (mf_read.c:31)
==4768==
==4768==
==4768== 20,480 bytes in 64 blocks are definitely lost in loss record 3
of 3
==4768== at 0x4021A92: memalign (vg_replace_malloc.c:460)
==4768== by 0x477753A: av_malloc (mem.c:61)
==4768== by 0x47775C8: av_mallocz (mem.c:134)
==4768== by 0x47246D5: add_pes_stream (mpegts.c:1015)
==4768== by 0x47247FC: handle_packet (mpegts.c:1045)
==4768== by 0x4724C21: handle_packets (mpegts.c:1169)
==4768== by 0x4725668: mpegts_read_packet (mpegts.c:1386)
==4768== by 0x46D8C57: av_read_packet (utils.c:615)
==4768== by 0x46DA1AA: av_read_frame_internal (utils.c:984)
==4768== by 0x46DD9CD: av_find_stream_info (utils.c:2060)
==4768== by 0x8048899: main (mf_read.c:33)
==4768==
==4768== LEAK SUMMARY:
==4768== definitely lost: 32,320 bytes in 101 blocks.
==4768== possibly lost: 0 bytes in 0 blocks.
==4768== still reachable: 0 bytes in 0 blocks.
==4768== suppressed: 0 bytes in 0 blocks.
$ ffmpeg
FFmpeg version SVN-r14775, Copyright (c) 2000-2008 Fabrice Bellard, et
al.
configuration: --disable-optimizations --disable-static --enable-
shared --disable-stripping --disable-mmx --disable-mmx2 --disable-ssse3
--enable-debug=3 --cpu=i686 --extra-cflags=-O0 -fno-inline --prefix=/
home/wl
libavutil 49. 9. 0 / 49. 9.
0
libavcodec 51.64. 0 / 51.64.
0
libavformat 52.20. 0 / 52.20.
0
libavdevice 52. 1. 0 / 52. 1.
0
built on Aug 15 2008 18:29:38, gcc: 4.2.3 (Ubuntu 4.2.3-2ubuntu7)
file mf_read.c
#include <stdio.h>
#include <string.h>
#include "libavcodec/avcodec.h"
#include "libavutil/avutil.h"
#include "libavformat/avformat.h"
int main(void)
{AVFormatContext *input=NULL;
AVFormatParameters ap;
AVPacket pkt;
int bqsize=0,r;
unsigned long pread=0;
av_register_all();
av_log_level=AV_LOG_DEBUG;
input=av_alloc_format_context();
input->iformat=av_find_input_format("mpegts");
printf("input format: %s (%p)\n",input->iformat->name,input-
>iformat);
input->flags|=AVFMT_FLAG_IGNIDX;
//input->flags&=~AVFMT_FLAG_GENPTS;
input->max_index_size=1024*50;
input->max_picture_buffer=1024*100;
memset(&ap, 0, sizeof(ap));
ap.prealloced_context=1;
r=av_open_input_file(&input,"issue430_wl2776_dump.ts",input-
>iformat,0,&ap);
printf("av_open_input_stream, ret=%d\n",r);
r=av_find_stream_info(input);
printf("av_find_stream_info, ret=%d\n",r);
input->pb->is_streamed=1;
r=0;
av_init_packet(&pkt);
while(r==0){
r = av_read_frame(input,&pkt);
pread++;
if(!(pread%1000)) printf("packets read: %lu \r",pread);
av_free_packet(&pkt);
//av_destruct_packet(&pkt);
}
puts("\nfinished");
av_close_input_file(input);
return 0;
}
----------
messages: 2795
nosy: wl2776
priority: normal
status: new
substatus: new
title: memory leak in MPEG TS demuxer
type: bug
______________________________________________________
FFmpeg issue tracker <[EMAIL PROTECTED]>
<https://roundup.mplayerhq.hu/roundup/ffmpeg/issue584>
______________________________________________________
