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• Fix missing used attribute for inline assembly variables

  12 novembre 2017, par Thomas Köppe

  Fix missing used attribute for inline assembly variables
  Variables used in inline assembly need to be marked with attribute((used)).
  
  Static constants already were, via the define of DECLARE_ASM_CONST.
  
  But DECLARE_ALIGNED does not add this attribute, and some of the variables
  
  defined with it are const only used in inline assembly, and therefore
  
  appeared dead. This change adds a macro DECLARE_ASM_ALIGNED that marks
  
  variables as used.
  This change makes FFMPEG work with Clang's ThinLTO.
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/cabac.c
  • [DH] libavcodec/x86/constants.c
  • [DH] libavutil/mem.h
  • [DH] libswscale/x86/swscale.c

• looking for the right regex expression to pick some specific sentences from a file using java regex

  26 novembre 2014, par sachh_ke_nasdiik

  I am writing a program in java that records the screen.
  it is actually something that uses the ffmpeg tool
  with a simple GUI.
  what I actually need is a way to grab from the following file :

  1. ffmpeg version N-57367-g2f31b73 Copyright (c) 2000-2013 the FFmpeg developers

  2. built on Oct 23 2013 20:22:19 with gcc 4.8.2 (GCC)

  3. configuration : —enable-gpl —enable-version3 —disable-w32threads —enable-avisynth
     — enable->bzlib —enable-fontconfig —enable-frei0r —enable-gnutls —enable-iconv —enable-
     libass —enable-libbluray —enable-libcaca —enable-libfreetype —enable-libgsm —enable-libilbc —enable-
     libmodplug —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-
     libopenjpeg —enable-libopus —enable-librtmp —enable-libschroedinger —enable-libsoxr —enable-
     libspeex —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvo-aacenc —enable-
     libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libx264 —enable-
     libxavs —enable-libxvid —enable-zlib

  4. libavutil 52. 47.101 / 52. 47.101
  5. libavcodec 55. 38.101 / 55. 38.101
  6. libavformat 55. 19.104 / 55. 19.104
  7. libavdevice 55. 4.100 / 55. 4.100
  8. libavfilter 3. 89.100 / 3. 89.100
  9. libswscale 2. 5.101 / 2. 5.101
  10. libswresample 0. 17.104 / 0. 17.104
  11. libpostproc 52. 3.100 / 52. 3.100
  12. [dshow @ 02482700] DirectShow video devices
  13. [dshow @ 02482700] "screen-capture-recorder"
  14. [dshow @ 02482700] DirectShow audio devices
  15. [dshow @ 02482700] "Microphone (ASUS Xonar DGX Audio Device)"
  16. [dshow @ 02482700] "virtual-audio-capturer"
  17. [dshow @ 02482700] "Line In (ASUS Xonar DGX Audio Device)"
  18. [dshow @ 02482700] "Stereo Mix (ASUS Xonar DGX Audio Device)"
  19. [dshow @ 02482700] "Aux (ASUS Xonar DGX Audio Device)"
  20. [dshow @ 02482700] "Wave (ASUS Xonar DGX Audio Device)"
  21. dummy : Immediate exit requested

  only the sentences between the quotation marks,
  those that describes the different devices,
  that shows up at the end of the file,
  ignoring of course the line numbering, that does not appear in the
  output file, but inserted here for better fluency.
  does anyone have any ideas how to work it out using java regex ?
  assuming I am using an enhanced for loop over a string array
  checking each line for its contents.

• Require compilers to support C11.

  3 février 2024, par Anton Khirnov

  Require compilers to support C11.
  It should be available in all relevant modern compilers and will allow
  
  us to use features like anonymous unions.
  Note that stdatomic.h is still emulated on MSVC, as current versions
  
  require the /experimental:c11atomics, and do not support
  
  ATOMIC_VAR_INIT() anyway.
  

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