[ffmpeg] Some libraries in ffmpeg can be optional (#12843)

* Make sub libraries of FFmpeg optional

avdevice
avfilter
swresample
swscale

* Also adding avcodec and avformat

* This should have been avcodec obviously

3 files changed, 119 insertions, 17 deletions

diff --git a/ports/ffmpeg/CONTROL b/ports/ffmpeg/CONTROL
index c318866af..a2a905b2c 100644
--- a/ports/ffmpeg/CONTROL
+++ b/ports/ffmpeg/CONTROL
@@ -1,11 +1,11 @@
 Source: ffmpeg
 Version: 4.2
-Port-Version: 17
+Port-Version: 18
 Build-Depends: zlib
 Homepage: https://ffmpeg.org
 Description: a library to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created.
   FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge. No matter if they were designed by some standards committee, the community or a corporation. It is also highly portable: FFmpeg compiles, runs, and passes our testing infrastructure FATE across Linux, Mac OS X, Microsoft Windows, the BSDs, Solaris, etc. under a wide variety of build environments, machine architectures, and configurations.
-Default-Features: avresample
+Default-Features: avresample, avcodec, avformat, avdevice, avfilter, swresample, swscale
 
 Feature: ffmpeg
 Description: build the ffmpeg.exe application
@@ -55,6 +55,24 @@ Description: upgrade (L)GPL to version 3
 Feature: avresample
 Description: Libav audio resampling library support in ffmpeg
 
+Feature: avcodec
+Description: Codec support in ffmpeg
+
+Feature: avformat
+Description: Format support in ffmpeg
+
+Feature: avdevice
+Description: Device support in ffmpeg
+
+Feature: avfilter
+Description: Filter support in ffmpeg
+
+Feature: swresample
+Description: Swresample support in ffmpeg
+
+Feature: swscale
+Description: Swscale support in ffmpeg
+
 Feature: nvcodec
 Build-Depends: ffnvcodec, cuda
 Description: Hardware accelerated codecs
diff --git a/ports/ffmpeg/FindFFMPEG.cmake.in b/ports/ffmpeg/FindFFMPEG.cmake.in
index 7333e6083..5fbd9963d 100644
--- a/ports/ffmpeg/FindFFMPEG.cmake.in
+++ b/ports/ffmpeg/FindFFMPEG.cmake.in
@@ -131,32 +131,68 @@ if(APPLE)
   list(APPEND FFMPEG_PLATFORM_DEPENDENT_LIBS ${VT_UNIT} ${AT_UNIT} ${SEC_UNIT} ${CF_UNIT} ${CM_UNIT} ${CV_UNIT} ${Iconv_LIBRARIES})
 endif()
 
-FFMPEG_FIND(libavcodec    avcodec    avcodec.h)
-FFMPEG_FIND(libavdevice   avdevice   avdevice.h)
-FFMPEG_FIND(libavfilter   avfilter   avfilter.h)
-FFMPEG_FIND(libavformat   avformat   avformat.h)
+if(@ENABLE_AVCODEC@)
+  FFMPEG_FIND(libavcodec    avcodec    avcodec.h)
+endif()
+if(@ENABLE_AVDEVICE@)
+  FFMPEG_FIND(libavdevice   avdevice   avdevice.h)
+endif()
+if(@ENABLE_AVFILTER@)
+  FFMPEG_FIND(libavfilter   avfilter   avfilter.h)
+endif()
+if(@ENABLE_AVFORMAT@)
+  FFMPEG_FIND(libavformat   avformat   avformat.h)
+endif()
 if(@ENABLE_AVRESAMPLE@)
   FFMPEG_FIND(libavresample avresample avresample.h)
 endif()
 FFMPEG_FIND(libavutil     avutil     avutil.h)
-FFMPEG_FIND(libswresample swresample swresample.h)
-FFMPEG_FIND(libswscale    swscale    swscale.h)
-
-if (FFMPEG_libavcodec_FOUND AND FFMPEG_libavdevice_FOUND AND FFMPEG_libavfilter_FOUND AND FFMPEG_libavformat_FOUND AND FFMPEG_libavutil_FOUND AND FFMPEG_libswresample_FOUND AND FFMPEG_libswscale_FOUND AND FFMPEG_libzlib_FOUND)
-  list(APPEND FFMPEG_INCLUDE_DIRS ${FFMPEG_libavformat_INCLUDE_DIRS} ${FFMPEG_libavdevice_INCLUDE_DIRS} ${FFMPEG_libavcodec_INCLUDE_DIRS} ${FFMPEG_libavutil_INCLUDE_DIRS} ${FFMPEG_libswscale_INCLUDE_DIRS})
+if(@ENABLE_SWRESAMPLE@)
+  FFMPEG_FIND(libswresample swresample swresample.h)
+endif()
+if(@ENABLE_SWSCALE@)
+  FFMPEG_FIND(libswscale    swscale    swscale.h)
+endif(@ENABLE_SWSCALE@)
+
+if (FFMPEG_libavutil_FOUND AND FFMPEG_libzlib_FOUND)
+  list(APPEND FFMPEG_INCLUDE_DIRS ${FFMPEG_libavutil_INCLUDE_DIRS})
+  if(FFMPEG_libavcodec_FOUND)
+    list(APPEND FFMPEG_INCLUDE_DIRS ${FFMPEG_libavcodec_INCLUDE_DIRS})
+  endif()
+  if(FFMPEG_libavdevice_FOUND)
+    list(APPEND FFMPEG_INCLUDE_DIRS ${FFMPEG_libavdevice_INCLUDE_DIRS})
+  endif()
+  if(FFMPEG_libavformat_FOUND)
+    list(APPEND FFMPEG_INCLUDE_DIRS ${FFMPEG_libavformat_INCLUDE_DIRS})
+  endif()
+  if(FFMPEG_libswscale_FOUND)
+    list(APPEND FFMPEG_INCLUDE_DIRS ${FFMPEG_libswscale_INCLUDE_DIRS})
+  endif()
   list(REMOVE_DUPLICATES FFMPEG_INCLUDE_DIRS)
   list(REMOVE_DUPLICATES FFMPEG_LIBRARY_DIRS)
 
-  set(FFMPEG_libavcodec_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
-  set(FFMPEG_libavdevice_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
-  set(FFMPEG_libavfilter_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
-  set(FFMPEG_libavformat_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
+  if(FFMPEG_libavcodec_FOUND)
+    set(FFMPEG_libavcodec_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
+  endif()
+  if(FFMPEG_libavdevice_FOUND)
+    set(FFMPEG_libavdevice_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
+  endif()
+  if(FFMPEG_libavfilter_FOUND)
+    set(FFMPEG_libavfilter_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
+  endif()
+  if(FFMPEG_libavformat_FOUND)
+    set(FFMPEG_libavformat_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
+  endif()
   if(FFMPEG_libavresample_FOUND)
     set(FFMPEG_libavresample_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
   endif()
   set(FFMPEG_libavutil_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
-  set(FFMPEG_libswresample_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
-  set(FFMPEG_libswscale_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
+  if(FFMPEG_libswresample_FOUND)
+    set(FFMPEG_libswresample_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
+  endif()
+  if(FFMPEG_libswscale_FOUND)
+    set(FFMPEG_libswscale_VERSION "${FFMPEG_VERSION}" CACHE STRING "")
+  endif()
 
   list(APPEND FFMPEG_LIBRARIES
     ${FFMPEG_libavdevice_LIBRARY}
diff --git a/ports/ffmpeg/portfile.cmake b/ports/ffmpeg/portfile.cmake
index 6fd6bc988..86fd3e5d9 100644
--- a/ports/ffmpeg/portfile.cmake
+++ b/ports/ffmpeg/portfile.cmake
@@ -133,6 +133,54 @@ if("avresample" IN_LIST FEATURES)
     set(ENABLE_AVRESAMPLE ON) #necessary for configuring FFMPEG CMake Module
 endif()
 
+if("avcodec" IN_LIST FEATURES)
+    set(OPTIONS "${OPTIONS} --enable-avcodec")
+    set(ENABLE_AVCODEC ON)
+else()
+    set(OPTIONS "${OPTIONS} --disable-avcodec")
+    set(ENABLE_AVCODEC OFF)
+endif()
+
+if("avdevice" IN_LIST FEATURES)
+    set(OPTIONS "${OPTIONS} --enable-avdevice")
+    set(ENABLE_AVDEVICE ON)
+else()
+    set(OPTIONS "${OPTIONS} --disable-avdevice")
+    set(ENABLE_AVDEVICE OFF)
+endif()
+
+if("avformat" IN_LIST FEATURES)
+    set(OPTIONS "${OPTIONS} --enable-avformat")
+    set(ENABLE_AVFORMAT ON)
+else()
+    set(OPTIONS "${OPTIONS} --disable-avformat")
+    set(ENABLE_AVFORMAT OFF)
+endif()
+
+if("avfilter" IN_LIST FEATURES)
+    set(OPTIONS "${OPTIONS} --enable-avfilter")
+    set(ENABLE_AVFILTER ON)
+else()
+    set(OPTIONS "${OPTIONS} --disable-avfilter")
+    set(ENABLE_AVFILTER OFF)
+endif()
+
+if("swresample" IN_LIST FEATURES)
+    set(OPTIONS "${OPTIONS} --enable-swresample")
+    set(ENABLE_SWRESAMPLE ON)
+else()
+    set(OPTIONS "${OPTIONS} --disable-swresample")
+    set(ENABLE_SWRESAMPLE OFF)
+endif()
+
+if("swscale" IN_LIST FEATURES)
+    set(OPTIONS "${OPTIONS} --enable-swscale")
+    set(ENABLE_SWSCALE ON)
+else()
+    set(OPTIONS "${OPTIONS} --disable-swscale")
+    set(ENABLE_SWSCALE OFF)
+endif()
+
 if (VCPKG_TARGET_IS_OSX)
     set(OPTIONS "${OPTIONS} --disable-vdpau") # disable vdpau in OSX
 endif()