cmake_modules/FindFFmpeg.cmake

   1 # Locate ffmpeg
   2 # This module defines
   3 # FFMPEG_LIBRARIES
   4 # FFMPEG_FOUND, if false, do not try to link to ffmpeg
   5 # FFMPEG_INCLUDE_DIR, where to find the headers
   6 #
   7 # $FFMPEG_DIR is an environment variable that would
   8 # correspond to the ./configure --prefix=$FFMPEG_DIR
   9 #
  10 # Created by Robert Osfield.
  11
  12
  13 #In ffmpeg code, old version use "#include <header.h>" and newer use "#include <libname/header.h>"
  14 #In OSG ffmpeg plugin, we use "#include <header.h>" for compatibility with old version of ffmpeg
  15
  16 #We have to search the path which contain the header.h (usefull for old version)
  17 #and search the path which contain the libname/header.h (usefull for new version)
  18
  19 #Then we need to include ${FFMPEG_libname_INCLUDE_DIRS} (in old version case, use by ffmpeg header and osg plugin code)
  20 #                                                       (in new version case, use by ffmpeg header)
  21 #and ${FFMPEG_libname_INCLUDE_DIRS/libname}             (in new version case, use by osg plugin code)
  22
  23
  24 # Macro to find header and lib directories
  25 # example: FFMPEG_FIND(AVFORMAT avformat avformat.h)
  26 MACRO(FFMPEG_FIND varname shortname headername)
  27     # old version of ffmpeg put header in $prefix/include/[ffmpeg]
  28     # so try to find header in include directory
  29     FIND_PATH(FFMPEG_${varname}_INCLUDE_DIRS ${headername}
  30         PATHS
  31         ${FFMPEG_ROOT}/include
  32         $ENV{FFMPEG_DIR}/include
  33         $ENV{OSGDIR}/include
  34         $ENV{OSG_ROOT}/include
  35         ~/Library/Frameworks
  36         /Library/Frameworks
  37         /usr/local/include
  38         /usr/include
  39         /sw/include # Fink
  40         /opt/local/include # DarwinPorts
  41         /opt/csw/include # Blastwave
  42         /opt/include
  43         /usr/freeware/include
  44         PATH_SUFFIXES ffmpeg
  45         DOC "Location of FFMPEG Headers"
  46     )
  47
  48     # newer version of ffmpeg put header in $prefix/include/[ffmpeg/]lib${shortname}
  49     # so try to find lib${shortname}/header in include directory
  50     IF(NOT FFMPEG_${varname}_INCLUDE_DIRS)
  51         FIND_PATH(FFMPEG_${varname}_INCLUDE_DIRS lib${shortname}/${headername}
  52             ${FFMPEG_ROOT}/include
  53             $ENV{FFMPEG_DIR}/include
  54             $ENV{OSGDIR}/include
  55             $ENV{OSG_ROOT}/include
  56             ~/Library/Frameworks
  57             /Library/Frameworks
  58             /usr/local/include
  59             /usr/include/
  60             /sw/include # Fink
  61             /opt/local/include # DarwinPorts
  62             /opt/csw/include # Blastwave
  63             /opt/include
  64             /usr/freeware/include
  65             PATH_SUFFIXES ffmpeg
  66             DOC "Location of FFMPEG Headers"
  67         )
  68     ENDIF(NOT FFMPEG_${varname}_INCLUDE_DIRS)
  69
  70     FIND_LIBRARY(FFMPEG_${varname}_LIBRARIES
  71         NAMES ${shortname}
  72         PATHS
  73         ${FFMPEG_ROOT}/lib
  74         $ENV{FFMPEG_DIR}/lib
  75         $ENV{OSGDIR}/lib
  76         $ENV{OSG_ROOT}/lib
  77         ~/Library/Frameworks
  78         /Library/Frameworks
  79         /usr/local/lib
  80         /usr/local/lib64
  81         /usr/lib
  82         /usr/lib64
  83         /sw/lib
  84         /opt/local/lib
  85         /opt/csw/lib
  86         /opt/lib
  87         /usr/freeware/lib64
  88         DOC "Location of FFMPEG Libraries"
  89     )
  90
  91     IF (FFMPEG_${varname}_LIBRARIES AND FFMPEG_${varname}_INCLUDE_DIRS)
  92         SET(FFMPEG_${varname}_FOUND 1)
  93     ENDIF(FFMPEG_${varname}_LIBRARIES AND FFMPEG_${varname}_INCLUDE_DIRS)
  94
  95 ENDMACRO(FFMPEG_FIND)
  96
  97 SET(FFMPEG_ROOT "$ENV{FFMPEG_DIR}" CACHE PATH "Location of FFMPEG")
  98
  99 FFMPEG_FIND(LIBAVFORMAT avformat avformat.h)
 100 FFMPEG_FIND(LIBAVDEVICE avdevice avdevice.h)
 101 FFMPEG_FIND(LIBAVCODEC  avcodec  avcodec.h)
 102 FFMPEG_FIND(LIBAVUTIL   avutil   avutil.h)
 103 FFMPEG_FIND(LIBSWSCALE  swscale  swscale.h)  # not sure about the header to look for here.
 104
 105 SET(FFMPEG_FOUND "NO")
 106 # Note we don't check FFMPEG_LIBSWSCALE_FOUND here, it's optional.
 107 IF   (FFMPEG_LIBAVFORMAT_FOUND AND FFMPEG_LIBAVDEVICE_FOUND AND FFMPEG_LIBAVCODEC_FOUND AND FFMPEG_LIBAVUTIL_FOUND)
 108
 109     SET(FFMPEG_FOUND "YES")
 110
 111     SET(FFMPEG_INCLUDE_DIRS ${FFMPEG_LIBAVFORMAT_INCLUDE_DIRS})
 112
 113     SET(FFMPEG_LIBRARY_DIRS ${FFMPEG_LIBAVFORMAT_LIBRARY_DIRS})
 114
 115     # Note we don't add FFMPEG_LIBSWSCALE_LIBRARIES here, it will be added if found later.
 116     SET(FFMPEG_LIBRARIES
 117         ${FFMPEG_LIBAVFORMAT_LIBRARIES}
 118         ${FFMPEG_LIBAVDEVICE_LIBRARIES}
 119         ${FFMPEG_LIBAVCODEC_LIBRARIES}
 120         ${FFMPEG_LIBAVUTIL_LIBRARIES})
 121
 122 ELSE (FFMPEG_LIBAVFORMAT_FOUND AND FFMPEG_LIBAVDEVICE_FOUND AND FFMPEG_LIBAVCODEC_FOUND AND FFMPEG_LIBAVUTIL_FOUND)
 123
 124 #    MESSAGE(STATUS "Could not find FFMPEG")
 125
 126 ENDIF(FFMPEG_LIBAVFORMAT_FOUND AND FFMPEG_LIBAVDEVICE_FOUND AND FFMPEG_LIBAVCODEC_FOUND AND FFMPEG_LIBAVUTIL_FOUND)