Add FFmpeg

.github/workflows/build.yml

@@ -36,6 +36,9 @@ jobs:
             ccache-${{ github.job }}-${{ github.ref }}-
             ccache-${{ github.job }}-
           path: ~/.ccache
+      - name: Install FFmpeg
+        run: |
+          apt-get --yes install libavcodec-dev libavformat-dev libavutil-dev libavdevice-dev libswresample-dev
       - name: Configure
         run: |
           source /opt/qt5*/bin/qt5*-env.sh || true
@@ -92,7 +95,7 @@ jobs:
         run: |
           brew install ccache fftw pkg-config libogg libvorbis lame libsndfile \
                        libsamplerate jack sdl libgig libsoundio lilv lv2 stk \
-                       fluid-synth portaudio fltk qt@5 carla
+                       fluid-synth portaudio fltk qt@5 carla ffmpeg
           npm install --location=global appdmg
       - name: Configure
         run: |
@@ -160,6 +163,29 @@ jobs:
             ccache-${{ github.job }}-${{ matrix.arch }}-${{ github.ref }}-
             ccache-${{ github.job }}-${{ matrix.arch }}-
           path: ~/.ccache
+      - name: Cross Compile FFmpeg
+        run: |
+          apt-get --yes install yasm
+          git clone -c http.sslVerify=false https://git.ffmpeg.org/ffmpeg.git ffmpeg
+
+          if [ ${{ matrix.arch }} == 32 ]; then
+            FFMPEG_CROSS_PREFIX=i686-w64-mingw32
+          elif [ ${{ matrix.arch }} == 64 ]; then
+            FFMPEG_CROSS_PREFIX=x86_64-w64-mingw32
+          fi
+
+          cd ffmpeg
+          ./configure \
+            --arch=x86 \
+            --target-os=mingw32 \
+            --enable-cross-compile \
+            --prefix=/usr/$FFMPEG_CROSS_PREFIX \
+            --cross-prefix=$FFMPEG_CROSS_PREFIX- \
+            --x86asmexe=yasm \
+            --disable-programs \
+            --disable-doc
+          make && make install
+        shell: bash
       - name: Configure
         run: |
           mkdir build && cd build
@@ -223,7 +249,7 @@ jobs:
       - name: Install dependencies
         run: |
           vcpkg install --triplet ${{ matrix.arch }}-windows --recurse `
-            fftw3 libsamplerate libsndfile lilv lv2 sdl2
+            fftw3 libsamplerate libsndfile lilv lv2 sdl2 ffmpeg[core,avcodec,avformat,avdevice,swresample]
       - name: Set up build environment
         uses: ilammy/msvc-dev-cmd@d8610e2b41c6d0f0c3b4c46dad8df0fd826c68e1
         with:

CMakeLists.txt

@@ -194,6 +194,10 @@ FIND_PACKAGE(SndFile REQUIRED)
 IF(NOT SNDFILE_FOUND)
 	MESSAGE(FATAL_ERROR "LMMS requires libsndfile1 and libsndfile1-dev >= 1.0.18 - please install, remove CMakeCache.txt and try again!")
 ENDIF()
+
+# check for FFmpeg
+FIND_PACKAGE(FFMPEG REQUIRED COMPONENTS avcodec avformat avutil avdevice swresample)
+
 # check if we can use SFC_SET_COMPRESSION_LEVEL
 INCLUDE(CheckCXXSourceCompiles)
 CHECK_CXX_SOURCE_COMPILES(

cmake/modules/FindFFMPEG.cmake

@@ -0,0 +1,88 @@
+# Distributed under the MIT License.
+# Copyright (c) 2022 sakertooth <[email protected]>
+
+#[=======================================================================[.rst:
+FindFFMPEG
+-------
+
+Finds the FFmpeg library.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This will define the following variables:
+
+``FFMPEG_FOUND``
+  True if the system has found the required FFmpeg components.
+
+``FFMPEG_INCLUDE_DIRS``
+  The include directories of the required FFmpeg components.
+
+``FFMPEG_LIBRARIES``
+  The libraries of the required FFmpeg components.
+
+
+Cache Variables
+^^^^^^^^^^^^^^^
+
+For each FFmpeg component:
+  avcodec,
+  avformat,
+  avutil,
+  avfilter,
+  avdevice,
+  swresample,
+  swscale
+
+The following cache variables may also be set:
+
+``FFMPEG_<component>_INCLUDE_DIR``
+  The include directory for the FFmpeg component.
+
+``FFMPEG_<component>_LIBRARY``
+  The library for the FFmpeg component.
+
+#]=======================================================================]
+
+find_package(PkgConfig)
+set(_possibleComponents avcodec avformat avutil avfilter avdevice swresample swscale)
+
+foreach(component ${FFMPEG_FIND_COMPONENTS})
+  string(TOUPPER ${component} _upperComponent)
+  pkg_check_modules(PC_${_upperComponent} lib${component})
+
+  LIST(FIND _possibleComponents ${component} _componentIndex)
+  if(${_componentIndex} EQUAL -1)
+    message(FATAL_ERROR "Unknown FFmpeg component: ${component}")
+  endif()
+
+  find_path(FFMPEG_${_upperComponent}_INCLUDE_DIR
+    NAMES lib${component}/${component}.h
+    PATHS ${PC_${_upperComponent}_INCLUDE_DIRS}
+  )
+
+  find_library(FFMPEG_${_upperComponent}_LIBRARY
+    NAMES ${component}
+    PATHS ${PC_${_upperComponent}_LIBRARY_DIR}
+  )
+
+  if (FFMPEG_${_upperComponent}_INCLUDE_DIR AND FFMPEG_${_upperComponent}_LIBRARY)
+    set(FFMPEG_${_upperComponent}_FOUND TRUE)
+    set(FFMPEG_${_upperComponent}_VERSION ${PC_${_upperComponent}_VERSION})
+    set(FFMPEG_INCLUDE_DIRS ${FFMPEG_INCLUDE_DIRS} ${FFMPEG_${_upperComponent}_INCLUDE_DIR})
+    set(FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES} ${FFMPEG_${_upperComponent}_LIBRARY})
+
+    mark_as_advanced(
+      FFMPEG_${_upperComponent}_INCLUDE_DIR
+      FFMPEG_${_upperComponent}_LIBRARY
+    )
+  endif()
+
+  set(FFMPEG_REQUIRED_VARS ${FFMPEG_REQUIRED_VARS}
+      FFMPEG_${_upperComponent}_INCLUDE_DIR
+      FFMPEG_${_upperComponent}_LIBRARY
+  )
+endforeach()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(FFMPEG DEFAULT_MSG ${FFMPEG_REQUIRED_VARS})

src/CMakeLists.txt

@@ -62,6 +62,7 @@ INCLUDE_DIRECTORIES(
 	${SNDFILE_INCLUDE_DIRS}
 	${SNDIO_INCLUDE_DIRS}
 	${FFTW3F_INCLUDE_DIRS}
+	${FFMPEG_INCLUDE_DIRS}
 )
 
 IF(NOT LMMS_HAVE_SDL2 AND NOT ("${SDL_INCLUDE_DIR}" STREQUAL ""))
@@ -189,6 +190,7 @@ SET(LMMS_REQUIRED_LIBS ${LMMS_REQUIRED_LIBS}
 	${SAMPLERATE_LIBRARIES}
 	${SNDFILE_LIBRARIES}
 	${FFTW3F_LIBRARIES}
+	${FFMPEG_LIBRARIES}
 	${EXTRA_LIBRARIES}
 	rpmalloc
 )