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• Revision 9b5df3fabe : Fix libvpx VP9 decoder dr memory errors Fixed dr memory errors reported in Issu

  21 mars 2014, par Yunqing Wang

  Changed Paths :
   Modify /vp9/common/vp9_reconintra.c

  
  
  Fix libvpx VP9 decoder dr memory errors

  Fixed dr memory errors reported in Issue 736 :
  https://code.google.com/p/webm/issues/detail?id=736

  All elements in left_col buffer need to be initialized to ensure
  the correctness of SIMD operations in x86 optimized code.

  Change-Id : I8e7f26ab45cca8099c1f9342bcf852f828bda7e4

• FFMPEG Decoding - Memory Leak

  1er mai 2013, par Spamdark

  Developing an application for a test, I encountered an error. Meanwhile the packets were proccessed, I got a very horrible problem, a memory leak.

  The av_free_packet is applied correctly, I think (See the code). When I run the app, the memory grows up to 500MB meanwhile it's playing the audio file, that's not normal. VLC or WMplayer (Windows Media Player) just wastes 30/20mb reading that file.

  Here is the code :

  static AVPacket pkt;
  
  static uint8_t *audio_pkt_data = NULL;
  
  static int audio_pkt_size = 0;
  
  static AVFrame frame;
  
  static bool first_time = true;
  
  
  
  if(first_time){
  
      first_time=false;
  
  }
  
  
  
  int len1, data_size = 0;
  
  
  
  for(;;){
  
      bool do_rt = false;
  
  
  
      while(audio_pkt_size > 0){
  
          int obt_frame = 0;
  
  
  
          len1 = avcodec_decode_audio4(_audio_ccontext,&frame,&obt_frame,&pkt);
  
          if(len1 < 0){
  
              audio_pkt_size = 0;
  
              break;
  
          }
  
          audio_pkt_data+=len1;
  
          audio_pkt_size-=len1;
  
          if(obt_frame){
  
              data_size = av_samples_get_buffer_size(NULL,channel_count,sample_fr,_audio_ccontext->sample_fmt,1);
  
              memcpy((int16_t*)audio_buf,frame.data[0],data_size);
  
  
  
          }
  
          if(data_size <= 0){
  
              continue;
  
          }
  
          do_rt = true;
  
      }
  
  
  
      if(pkt.data){
  
          //MessageBox(0,"hi","Hi",MB_OK); // This is only for test if the app si reaching this av_free_packet
  
          av_free_packet(&pkt);
  
      }
  
  
  
      if(do_rt){
  
          return data_size;
  
      }
  
  
  
      // Try to get a new packet
  
      if(!audio_packets.empty()){
  
          WaitForSingleObject(Queue_Audio_Mutex,INFINITE);
  
              pkt = *audio_packets.front();
  
              audio_packets.pop();
  
          ReleaseMutex(Queue_Audio_Mutex);
  
  
  
          audio_pkt_size = pkt.size;
  
          audio_pkt_data = pkt.data;
  
      }else{
  
          return -1;
  
      }
  
  }
  
  return 0;
  
  }

  I would appreciate your help. Thank you very much.

• avfilter/vf_pullup : zero freed memory for saftey

  26 mars 2014, par Michael Niedermayer

  avfilter/vf_pullup : zero freed memory for saftey
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavfilter/vf_pullup.c