mirror of
https://github.com/mpv-player/mpv.git
synced 2026-10-29 15:11:09 +08:00
Uoti Urpala
2ba8b91a97
The player can read codec mapping (codecs.conf) from an external file or use embedded defaults. Before, the defaults were stored in the player binary in the form of final already-parsed data structures. Simplify things by storing the text of the codecs.conf file instead, and parse that at runtime the same way an external file would be parsed. To create the previous parsed form, the build system first compiled a separate binary named "codec-cfg", which parsed etc/codecs.conf and then wrote the results as a C data structure that could be compiled into the program. The new simple conversion of codecs.conf into a C string is handled by the new script TOOLS/file2string.py. After removing the codec-cfg binary, HOST_CC is no longer used for anything. Remove the --host-cc configure option and associated logic. Also remove the codec2html and codec-cfg-test functionality. Building those was already broken and nobody cared. There was a broken 3-character-long "fourcc" entry in etc/codecs.conf. This happened to be accepted before but triggered a parse error after the changes. Remove the broken entry and make the parsing functions explicitly test for this error.
Compiling with full features requires development files for several external libraries. Below is a list of some important requirements. For more information see the output of './configure --help' for a list of options, or look at the list of enabled and disabled features printed after running './configure'. If you think you have support for some feature installed but configure fails to detect it, the file config.log may contain information about the reasons for the failure. Libraries specific to particular video output methods (you'll want at least one of VDPAU, GL or Xv): - libvdpau (for VDPAU output, best choice for NVIDIA cards) - libGL (OpenGL output) - libXv (XVideo output) general: - libasound (ALSA audio output) - various general X development libraries - libfreetype - libfontconfig - libass - FFmpeg libraries (libavutil libavcodec libavformat libswscale libpostproc) Most of the above libraries are available in suitable versions on normal Linux distributions. However FFmpeg is an exception (distro versions may be too old to work at all or work well). For that reason you may want to use the separately available build wrapper that first compiles FFmpeg libraries and libass, and then compiles the player statically linked against those.