[Bf-blender-cvs] [2fdbe4d0501] master: CMake/Find packages: add FindFFmpeg.cmake module.
Ankit Meel
noreply at git.blender.org
Mon Sep 28 21:04:25 CEST 2020
Commit: 2fdbe4d0501114c716fd12bc3354b50ab2bd41eb
Author: Ankit Meel
Date: Mon Sep 28 16:05:08 2020 +0530
Branches: master
https://developer.blender.org/rB2fdbe4d0501114c716fd12bc3354b50ab2bd41eb
CMake/Find packages: add FindFFmpeg.cmake module.
The behaviour is a bit different from other find modules:
`FFMPEG_FIND_COMPONENTS` should contain the
list of required libraries before calling `find_package(FFmpeg)`.
If not set, a default set of most common libraries is searched for:
`avcodec avdevice avfilter avformat avutil`
http://ffmpeg.org/download.html
Ref D8855
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D8918
===================================================================
A build_files/cmake/Modules/FindFFmpeg.cmake
===================================================================
diff --git a/build_files/cmake/Modules/FindFFmpeg.cmake b/build_files/cmake/Modules/FindFFmpeg.cmake
new file mode 100644
index 00000000000..844132f5337
--- /dev/null
+++ b/build_files/cmake/Modules/FindFFmpeg.cmake
@@ -0,0 +1,83 @@
+# - Find FFmpeg library and includes.
+# Set FFMPEG_FIND_COMPONENTS to the canonical names of the libraries
+# before using the package.
+# This module defines
+# FFMPEG_INCLUDE_DIRS, where to find libavcodec/ac3_parser.h.
+# FFMPEG_LIBRARIES, libraries to link against to use FFmpeg.
+# FFMPEG_ROOT_DIR, The base directory to search for FFmpeg.
+# This can also be an environment variable.
+# FFMPEG_FOUND, If false, do not try to use FFmpeg.
+# FFMPEG_<COMPONENT>_LIBRARY, the given individual component libraries.
+#=============================================================================
+# Copyright 2020 Blender Foundation.
+#
+# Distributed under the OSI-approved BSD 3-Clause License,
+# see accompanying file BSD-3-Clause-license.txt for details.
+#=============================================================================
+
+# If FFMPEG_ROOT_DIR was defined in the environment, use it.
+if(NOT FFMPEG_ROOT_DIR AND NOT $ENV{FFMPEG_ROOT_DIR} STREQUAL "")
+ set(FFMPEG_ROOT_DIR $ENV{FFMPEG_ROOT_DIR})
+endif()
+
+set(_ffmpeg_SEARCH_DIRS
+ ${FFMPEG_ROOT_DIR}
+ /opt/lib/ffmpeg
+)
+
+if(NOT FFMPEG_FIND_COMPONENTS)
+ set(FFMPEG_FIND_COMPONENTS
+ # List taken from http://ffmpeg.org/download.html#build-mac
+ avcodec
+ avdevice
+ avfilter
+ avformat
+ avutil
+ )
+endif()
+
+find_path(_ffmpeg_INCLUDE_DIR
+ NAMES
+ libavcodec/ac3_parser.h
+ HINTS
+ ${_ffmpeg_SEARCH_DIRS}
+ PATH_SUFFIXES
+ include
+)
+
+set(_ffmpeg_LIBRARIES)
+foreach(_component ${FFMPEG_FIND_COMPONENTS})
+ string(TOUPPER ${_component} _upper_COMPONENT)
+ find_library(FFMPEG_${_upper_COMPONENT}_LIBRARY
+ NAMES
+ ${_upper_COMPONENT}
+ HINTS
+ ${LIBDIR}/ffmpeg
+ PATH_SUFFIXES
+ lib64 lib
+ )
+ if(NOT FFMPEG_${_upper_COMPONENT}_LIBRARY)
+ message(WARNING "Could not find FFpeg ${_upper_COMPONENT}.")
+ endif()
+ list(APPEND _ffmpeg_LIBRARIES ${FFMPEG_${_upper_COMPONENT}_LIBRARY})
+ mark_as_advanced(FFMPEG_${_upper_COMPONENT}_LIBRARY)
+endforeach()
+
+# handle the QUIETLY and REQUIRED arguments and set FFMPEG_FOUND to TRUE if
+# all listed variables are TRUE
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(FFmpeg DEFAULT_MSG
+ _ffmpeg_LIBRARIES _ffmpeg_INCLUDE_DIR)
+
+IF(FFMPEG_FOUND)
+ set(FFMPEG_LIBRARIES ${_ffmpeg_LIBRARIES})
+ set(FFMPEG_INCLUDE_DIRS ${_ffmpeg_INCLUDE_DIR})
+ENDIF(FFMPEG_FOUND)
+
+mark_as_advanced(
+ FFMPEG_INCLUDE_DIR
+)
+
+unset(_ffmpeg_SEARCH_DIRS)
+unset(_ffmpeg_LIBRARIES)
+unset(_ffmpeg_INCLUDE_DIR)
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