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• aacpsy : Add energy spread for each band

  26 juin 2015, par Rostislav Pehlivanov

  aacpsy : Add energy spread for each band
  This commit adds the energy spread to the struct for each band and removes 2 unused fields.
  
  distortion and perceptual_weight were not referenced in any file nor were they set to any value,
  
  so it was safe to remove them. The energy spread is currently only used in the aac psy model.
  
  It’s defined as being proportional to the tonality of each band.
  Reviewed-by : Claudio Freire <klaussfreire@gmail.com>
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/aacpsy.c
  • [DH] libavcodec/psymodel.h

• Segmentation Fault when running ffmpeg+sdl program

  23 juin 2015, par user2270995

  I started with Dranger’s tutorials on building a video player using FFMPEG and SDL. The code tutorial4 compiles fine but when i run it i get a segmentation fault error. here’s the code for tutorial4.

  I am using gcc

  Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
  
  Target: x86_64-apple-darwin14.3.0
  
  Thread model: posix 

  on Mac 10.10.3.

  Here’s GDB Backtrace :

   Program received signal SIGSEGV, Segmentation fault.
  
  [Switching to Thread 0x1813 of process 84136]
  
  0x00007fff955d4432 in stack_not_16_byte_aligned_error ()
  
  from /usr/lib/system/libdyld.dylib
  
  (gdb) backtrace 
  
  #0  0x00007fff955d4432 in stack_not_16_byte_aligned_error ()
  
  from /usr/lib/system/libdyld.dylib
  
  #1  0x000000010a2f1ee0 in ?? ()
  
  #2  0x0000000101341008 in ?? () from /usr/local/lib/libSDL-1.2.0.dylib
  
  #3  0x00000000000005d0 in ?? ()
  
  #4  0x00000001013362e9 in RunThread () from /usr/local/lib/libSDL-1.2.0.dylib
  
  #5  0x00000001013362e2 in RunThread () from /usr/local/lib/libSDL-1.2.0.dylib
  
  #6  0x00007fff8d1d4268 in ?? () from /usr/lib/system/libsystem_pthread.dylib
  
  #7  0x0000000000006f23 in ?? ()
  
  #8  0x000000010a2f2000 in ?? ()
  
  #9  0x000000010a2f1f50 in ?? ()  
  
  #10 0x00007fff8d1d41e5 in ?? () from /usr/lib/system/libsystem_pthread.dylib
  
  #11 0x0000000000000000 in ?? ()
  
  (gdb) 

  Backtrace for another SIGSEGV :

  Program received signal SIGSEGV, Segmentation fault.
  
  [Switching to Thread 0x15eb of process 11453]
  
  0x00000001012c9475 in av_log_format_line ()
  
  from /usr/local/lib/libavutil.54.dylib
  
  (gdb) bt
  
  #0  0x00000001012c9475 in av_log_format_line ()
  
  from /usr/local/lib/libavutil.54.dylib
  
  #1  0x00000001012f7338 in av_pix_fmt_descriptors ()
  
  from /usr/local/lib/libavutil.54.dylib
  
  #2  0x00000018012f7358 in ?? ()
  
  #3  0x000000010a2f3010 in ?? ()
  
  #4  0x000000010a2f2c10 in ?? ()
  
  #5  0x000000010011d65a in ?? () from  /usr/local/lib/libavformat.56.dylib
  
  #6  0x000000010a2f3900 in ?? ()
  
  #7  0x0000000000000018 in ?? ()
  
  #8  0x0000000000000018 in ?? ()
  
  #9  0x000000010011d65a in ?? () from /usr/local/lib/libavformat.56.dylib
  
  #10 0x000000010a2f3900 in ?? ()
  
  #11 0x910016d093cdc267 in ?? ()
  
  #12 0x000000010a2f3eb0 in ?? ()
  
  #13 0x00000001012c96e8 in av_log_default_callback ()
  
  from /usr/local/lib/libavutil.54.dylib
  
  #14 0x0000000000000000 in ?? ()
  
  (gdb) 

  The call to SDL_WaitEvent in main method is where these errors occur in my debugging.

  for(;;) {
  
  SDL_WaitEvent(&event);
  
  switch(event.type) {
  
  case FF_QUIT_EVENT:
  
  case SDL_QUIT:
  
    is->quit = 1;
  
    SDL_Quit();
  
    return 0;
  
    break;
  
  case FF_REFRESH_EVENT:
  
    video_refresh_timer(event.user.data1);
  
    break;
  
  default:
  
    break;
  
   }
  
  }

  is this related to pthread library or sdl And how do i resolve it ?

• ffmpeg armv7s compile segmentation fault

  13 mai 2015, par Sergey92zp

  I use https://github.com/kewlbear/FFmpeg-iOS-build-script to compile ffmpeg,
  but when i try to compile, for armv7s architecture i have next error

  all other archs compile fine

  clang : error : unable to execute command : Segmentation fault : 11 clang :
  error : clang frontend command failed due to signal (use -v to see
  invocation) Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM
  3.6.0svn) Target : arm-apple-darwin14.3.0 Thread model : posix clang : note : diagnostic msg : PLEASE submit a bug report to
  http://developer.apple.com/bugreporter/ and include the crash
  backtrace, preprocessed source, and associated run script. clang :
  note : diagnostic msg :

  ---

  PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT : Preprocessed
  source(s) and associated run script(s) are located at : clang : note :
  diagnostic msg :
  /var/folders/zk/wj2cn08s26x64nlzk3_kjnv80000gn/T/vp8-c6ec27.c clang :
  note : diagnostic msg :
  /var/folders/zk/wj2cn08s26x64nlzk3_kjnv80000gn/T/vp8-c6ec27.sh clang :
  note : diagnostic msg :

  ******************** make : * [libavcodec/vp8.o] Error 254 make : * Waiting for unfinished jobs.... CC libavcodec/wmv2enc.o

  Couple months ago all compiled without any errors.
  Tried on couple versions of ffmpeg

  Here is Clang -v

  Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
  Target : x86_64-apple-darwin14.3.0 Thread model : posix

  and xcode version is Version 6.3.1 (6D1002)