CMake refactoring

1 files changed, 141 insertions, 0 deletions

diff --git a/cmake/FindFFMPEG.cmake b/cmake/FindFFMPEG.cmake
new file mode 100644
index 000000000..9065fed64
--- /dev/null
+++ b/cmake/FindFFMPEG.cmake
@@ -0,0 +1,141 @@
+# - Try to find FFMPEG
+# Once done this will define
+#  FFMPEG_FOUND - System has FFMPEG
+#  FFMPEG_INCLUDE_DIRS - The FFMPEG include directories
+#  FFMPEG_LIBRARIES - The libraries needed to use FFMPEG
+#  FFMPEG_LIBRARY_DIRS - The directory to find FFMPEG libraries
+#
+# written by Roy Shilkrot 2013 http://www.morethantechnical.com/
+#
+
+find_package(PkgConfig)
+
+
+MACRO(FFMPEG_FIND varname shortname headername)
+
+  IF(NOT WIN32)
+        PKG_CHECK_MODULES(PC_${varname} ${shortname})
+
+        FIND_PATH(${varname}_INCLUDE_DIR "${shortname}/${headername}" 
+            HINTS ${PC_${varname}_INCLUDEDIR} ${PC_${varname}_INCLUDE_DIRS}
+            NO_DEFAULT_PATH
+            )
+    ELSE()
+        FIND_PATH(${varname}_INCLUDE_DIR "${shortname}/${headername}")
+    ENDIF()
+        
+    IF(${varname}_INCLUDE_DIR STREQUAL "${varname}_INCLUDE_DIR-NOTFOUND")
+        message(STATUS "Look for newer structure")
+        IF(NOT WIN32)
+            PKG_CHECK_MODULES(PC_${varname} "lib${shortname}")
+
+            FIND_PATH(${varname}_INCLUDE_DIR "lib${shortname}/${headername}"
+                HINTS ${PC_${varname}_INCLUDEDIR} ${PC_${varname}_INCLUDE_DIRS}
+                NO_DEFAULT_PATH
+                )
+        ELSE()
+            FIND_PATH(${varname}_INCLUDE_DIR "lib${shortname}/${headername}")
+            IF(${${varname}_INCLUDE_DIR} STREQUAL "${varname}_INCLUDE_DIR-NOTFOUND")
+                #Desperate times call for desperate measures
+                MESSAGE(STATUS "globbing...")
+                FILE(GLOB_RECURSE ${varname}_INCLUDE_DIR "/ffmpeg*/${headername}")
+                MESSAGE(STATUS "found: ${${varname}_INCLUDE_DIR}")
+                IF(${varname}_INCLUDE_DIR)
+                    GET_FILENAME_COMPONENT(${varname}_INCLUDE_DIR "${${varname}_INCLUDE_DIR}" PATH)
+                    GET_FILENAME_COMPONENT(${varname}_INCLUDE_DIR "${${varname}_INCLUDE_DIR}" PATH)
+                ELSE()
+                    SET(${varname}_INCLUDE_DIR "${varname}_INCLUDE_DIR-NOTFOUND")
+                ENDIF()
+            ENDIF()
+        ENDIF()
+    ENDIF()
+
+
+    IF(${${varname}_INCLUDE_DIR} STREQUAL "${varname}_INCLUDE_DIR-NOTFOUND")
+        MESSAGE(STATUS "Can't find includes for ${shortname}...")
+    ELSE()
+        MESSAGE(STATUS "Found ${shortname} include dirs: ${${varname}_INCLUDE_DIR}")
+
+#        GET_DIRECTORY_PROPERTY(FFMPEG_PARENT DIRECTORY ${${varname}_INCLUDE_DIR} PARENT_DIRECTORY)
+        GET_FILENAME_COMPONENT(FFMPEG_PARENT ${${varname}_INCLUDE_DIR} PATH)
+        MESSAGE(STATUS "Using FFMpeg dir parent as hint: ${FFMPEG_PARENT}")
+
+        IF(NOT WIN32)
+            FIND_LIBRARY(${varname}_LIBRARIES NAMES ${shortname}
+                HINTS ${PC_${varname}_LIBDIR} ${PC_${varname}_LIBRARY_DIR} ${FFMPEG_PARENT})
+        ELSE()
+#            FIND_PATH(${varname}_LIBRARIES "${shortname}.dll.a" HINTS ${FFMPEG_PARENT})
+            FILE(GLOB_RECURSE ${varname}_LIBRARIES "${FFMPEG_PARENT}/*${shortname}.lib") 
+            # GLOBing is very bad... but windows sux, this is the only thing that works
+        ENDIF()
+
+        IF(${varname}_LIBRARIES STREQUAL "${varname}_LIBRARIES-NOTFOUND")
+            MESSAGE(STATUS "look for newer structure for library")
+            FIND_LIBRARY(${varname}_LIBRARIES NAMES lib${shortname}
+                HINTS ${PC_${varname}_LIBDIR} ${PC_${varname}_LIBRARY_DIR} ${FFMPEG_PARENT})
+        ENDIF()
+
+
+        IF(${varname}_LIBRARIES STREQUAL "${varname}_LIBRARIES-NOTFOUND")
+            MESSAGE(STATUS "Can't find lib for ${shortname}...")
+        ELSE()
+            MESSAGE(STATUS "Found ${shortname} libs: ${${varname}_LIBRARIES}")
+        ENDIF()
+
+
+        IF(NOT ${varname}_INCLUDE_DIR STREQUAL "${varname}_INCLUDE_DIR-NOTFOUND"
+            AND NOT ${varname}_LIBRARIES STREQUAL ${varname}_LIBRARIES-NOTFOUND)
+
+            MESSAGE(STATUS "found ${shortname}: include ${${varname}_INCLUDE_DIR} lib ${${varname}_LIBRARIES}")
+            SET(FFMPEG_${varname}_FOUND 1)
+            SET(FFMPEG_${varname}_INCLUDE_DIRS ${${varname}_INCLUDE_DIR})
+            SET(FFMPEG_${varname}_LIBS ${${varname}_LIBRARIES})
+        ELSE()
+            MESSAGE(STATUS "Can't find ${shortname}")
+        ENDIF()
+
+    ENDIF()
+
+ENDMACRO(FFMPEG_FIND)
+
+FFMPEG_FIND(LIBAVFORMAT avformat avformat.h)
+FFMPEG_FIND(LIBAVCODEC  avcodec  avcodec.h)
+FFMPEG_FIND(LIBAVUTIL   avutil   avutil.h)
+FFMPEG_FIND(LIBSWRESAMPLE  swresample  swresample.h)
+
+SET(FFMPEG_FOUND "NO")
+IF (FFMPEG_LIBAVFORMAT_FOUND AND 
+     FFMPEG_LIBAVCODEC_FOUND AND 
+     FFMPEG_LIBAVUTIL_FOUND AND
+     FFMPEG_LIBSWRESAMPLE_FOUND
+)
+
+
+    SET(FFMPEG_FOUND "YES")
+
+    SET(FFMPEG_INCLUDE_DIRS ${FFMPEG_LIBAVFORMAT_INCLUDE_DIRS})
+
+    SET(FFMPEG_LIBRARY_DIRS ${FFMPEG_LIBAVFORMAT_LIBRARY_DIRS})
+
+    SET(FFMPEG_LIBRARIES
+        ${FFMPEG_LIBAVFORMAT_LIBS}
+        ${FFMPEG_LIBAVCODEC_LIBS}
+        ${FFMPEG_LIBAVUTIL_LIBS}
+        ${FFMPEG_LIBSWRESAMPLE_LIBS}
+    )
+
+ELSE ()
+
+   MESSAGE(STATUS "Could not find FFMPEG")
+
+ENDIF()
+
+message(STATUS ${FFMPEG_LIBRARIES} ${FFMPEG_LIBAVFORMAT_LIBRARIES})
+
+include(FindPackageHandleStandardArgs)
+# handle the QUIETLY and REQUIRED arguments and set FFMPEG_FOUND to TRUE
+# if all listed variables are TRUE
+find_package_handle_standard_args(FFMPEG DEFAULT_MSG
+                                  FFMPEG_LIBRARIES FFMPEG_INCLUDE_DIRS)
+
+mark_as_advanced(FFMPEG_INCLUDE_DIRS FFMPEG_LIBRARY_DIRS FFMPEG_LIBRARIES)