Build own FFMPEG

.gitignore

@@ -5,3 +5,4 @@ cmake-build-*
 .DS_store
 *.AppImage
 appdir
+/ffmpeg*

.travis.yml

@@ -19,10 +19,9 @@ matrix:
             - qt512gamepad
             - qt512svg
             - libgl1-mesa-dev
-            - libavcodec-dev
+            - nasm
-            - libavcodec-extra
       env:
-        - CMAKE_PREFIX_PATH="/opt/qt512"
+        - CMAKE_PREFIX_PATH="$TRAVIS_BUILD_DIR/ffmpeg-prefix;/opt/qt512"
         - CMAKE_EXTRA_ARGS="-DCMAKE_INSTALL_PREFIX=/usr"
         - DEPLOY_FILE="Chiaki-x86_64.AppImage"
       after_success:
@@ -42,12 +41,15 @@ matrix:
             - qt
             - opus
             - openssl@1.1
-            - ffmpeg
+            - nasm
       env:
         - CMAKE_PREFIX_PATH="/usr/local/opt/openssl@1.1;/usr/local/opt/qt"
         - CMAKE_EXTRA_ARGS=""
         - DEPLOY_FILE="""
 
+install:
+  - scripts/build-ffmpeg.sh
+
 script:
   - mkdir build && cd build
   - cmake

cmake/FindFFMPEG.cmake

@@ -29,7 +29,19 @@ Note that only components requested with `COMPONENTS` or `OPTIONAL_COMPONENTS`
 are guaranteed to set these variables or provide targets.
 #]==]
 
+find_package(PkgConfig)
+
 function (_ffmpeg_find component headername)
+  # Try pkg-config first
+  if(PKG_CONFIG_FOUND)
+    pkg_check_modules(FFMPEG_${component} lib${component} IMPORTED_TARGET)
+    if(FFMPEG_${component}_FOUND)
+      set_target_properties(PkgConfig::FFMPEG_${component} PROPERTIES IMPORTED_GLOBAL TRUE)
+      add_library(FFMPEG::${component} ALIAS PkgConfig::FFMPEG_${component})
+      return()
+    endif()
+  endif()
+
   find_path("FFMPEG_${component}_INCLUDE_DIR"
     NAMES
       "lib${component}/${headername}"
@@ -130,23 +142,28 @@ function (_ffmpeg_find component headername)
   endif ()
 endfunction ()
 
+unset(_pkg_config_extra_arg)
+
 _ffmpeg_find(avutil     avutil.h)
-_ffmpeg_find(avresample avresample.h
+#_ffmpeg_find(avresample avresample.h
-  avutil)
+#  avutil)
 _ffmpeg_find(swresample swresample.h
   avutil)
 _ffmpeg_find(swscale    swscale.h
   avutil)
 _ffmpeg_find(avcodec    avcodec.h
   avutil)
-_ffmpeg_find(avformat   avformat.h
+#_ffmpeg_find(avformat   avformat.h
-  avcodec avutil)
+#  avcodec avutil)
-_ffmpeg_find(avfilter   avfilter.h
+#_ffmpeg_find(avfilter   avfilter.h
-  avutil)
+#  avutil)
-_ffmpeg_find(avdevice   avdevice.h
+#_ffmpeg_find(avdevice   avdevice.h
-  avformat avutil)
+#  avformat avutil)
 
 if (TARGET FFMPEG::avutil)
+  if(TARGET PkgConfig::FFMPEG_avutil)
+    set(FFMPEG_VERSION ${FFMPEG_avutil_VERSION})
+  else()
     set(_ffmpeg_version_header_path "${FFMPEG_avutil_INCLUDE_DIR}/libavutil/ffversion.h")
     if (EXISTS "${_ffmpeg_version_header_path}")
       file(STRINGS "${_ffmpeg_version_header_path}" _ffmpeg_version
@@ -158,12 +175,19 @@ if (TARGET FFMPEG::avutil)
     endif ()
     unset(_ffmpeg_version_header_path)
   endif()
+endif ()
 
 set(FFMPEG_INCLUDE_DIRS)
 set(FFMPEG_LIBRARIES)
 set(_ffmpeg_required_vars)
 foreach (_ffmpeg_component IN LISTS FFMPEG_FIND_COMPONENTS)
   if (TARGET "FFMPEG::${_ffmpeg_component}")
+    if(TARGET PkgConfig::FFMPEG_${_ffmpeg_component})
+      list(APPEND FFMPEG_INCLUDE_DIRS ${FFMPEG_${_ffmpeg_component}_INCLUDE_DIRS})
+      list(APPEND FFMPEG_LIBRARIES ${FFMPEG_${_ffmpeg_component}_LIBRARIES})
+      list(APPEND _ffmpeg_required_vars
+              "FFMPEG_${_ffmpeg_component}_LIBRARIES")
+    else()
       set(FFMPEG_${_ffmpeg_component}_INCLUDE_DIRS
         "${FFMPEG_${_ffmpeg_component}_INCLUDE_DIR}")
       set(FFMPEG_${_ffmpeg_component}_LIBRARIES
@@ -174,8 +198,9 @@ foreach (_ffmpeg_component IN LISTS FFMPEG_FIND_COMPONENTS)
         "${FFMPEG_${_ffmpeg_component}_LIBRARIES}")
       if (FFMEG_FIND_REQUIRED_${_ffmpeg_component})
         list(APPEND _ffmpeg_required_vars
-        "FFMPEG_${_ffmpeg_required_vars}_INCLUDE_DIRS"
+          "FFMPEG_${_ffmpeg_component}_INCLUDE_DIRS"
-        "FFMPEG_${_ffmpeg_required_vars}_LIBRARIES")
+          "FFMPEG_${_ffmpeg_component}_LIBRARIES")
+      endif()
     endif ()
   endif ()
 endforeach ()
@@ -187,7 +212,7 @@ endif ()
 
 include(FindPackageHandleStandardArgs)
 find_package_handle_standard_args(FFMPEG
-  REQUIRED_VARS FFMPEG_INCLUDE_DIRS FFMPEG_LIBRARIES ${_ffmpeg_required_vars}
+  REQUIRED_VARS ${_ffmpeg_required_vars}
   VERSION_VAR FFMPEG_VERSION
   HANDLE_COMPONENTS)
 unset(_ffmpeg_required_vars)

scripts/build-ffmpeg.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+cd $(dirname "${BASH_SOURCE[0]}")/..
+ROOT="`pwd`"
+
+TAG=n4.2
+
+git clone https://git.ffmpeg.org/ffmpeg.git --depth 1 -b $TAG && cd ffmpeg || exit 1
+
+./configure --disable-all --enable-avcodec --enable-decoder=h264 --prefix="$ROOT/ffmpeg-prefix" || exit 1
+make -j4 || exit 1
+make install || exit 1