__deps__ := YASM BZIP2 ZLIB FDKAAC LIBVPX LAME LIBOPUS
ifeq (1-mingw,$(BUILD.cross)-$(BUILD.system))
__deps__ += PTHREADW32
endif
ifeq (1,$(FEATURE.qsv))
__deps__ += LIBMFX
endif

$(eval $(call import.MODULE.defs,FFMPEG,ffmpeg,$(__deps__)))
$(eval $(call import.CONTRIB.defs,FFMPEG))

FFMPEG.FETCH.url     = https://download.handbrake.fr/handbrake/contrib/libav-11.3.tar.gz
FFMPEG.FETCH.url    += https://libav.org/releases/libav-11.3.tar.gz
FFMPEG.FETCH.sha256  = 5a6f6d5529d2074a5a9665bd3e048cbaefbfd88d57f0b59604baa0ce3602967e

# TODO: libav >= 11.4
#FFMPEG.FETCH.url    = https://libav.org/releases/libav-11.4.tar.gz
#FFMPEG.FETCH.sha256 = 5a6f6d5529d2074a5a9665bd3e048cbaefbfd88d57f0b59604baa0ce3602967e

FFMPEG.CONFIGURE.deps  =
FFMPEG.CONFIGURE.host  =
FFMPEG.CONFIGURE.build =
FFMPEG.CONFIGURE.env.LOCAL_PATH = PATH="$(call fn.ABSOLUTE,$(CONTRIB.build/)bin):$(PATH)"
FFMPEG.BUILD.env                = PATH="$(call fn.ABSOLUTE,$(CONTRIB.build/)bin):$(PATH)"

FFMPEG.CONFIGURE.extra = \
    --enable-gpl \
    --disable-doc \
    --disable-bsfs \
    --enable-bsf=aac_adtstoasc \
    --disable-avconv \
    --disable-avplay \
    --disable-avprobe \
    --disable-avdevice \
    --disable-muxers \
    --disable-network \
    --disable-hwaccels \
    --disable-encoders \
    --enable-libmp3lame \
    --enable-encoder=aac \
    --enable-encoder=ac3 \
    --enable-encoder=eac3 \
    --enable-encoder=flac \
    --enable-encoder=mpeg2video \
    --enable-encoder=mpeg4 \
    --enable-encoder=libmp3lame \
    --enable-libopus \
    --enable-encoder=libopus \
    --enable-libvpx \
    --enable-encoder=libvpx_vp8 \
    --disable-decoder=libvpx_vp8 \
    --enable-encoder=libvpx_vp9 \
    --disable-decoder=libvpx_vp9 \
    --enable-zlib \
    --enable-bzlib \
    --enable-pthreads \
    --cc="$(FFMPEG.GCC.gcc)" \
    --extra-ldflags="$(call fn.ARGS,FFMPEG.GCC,*archs *sysroot *minver ?extra) -L$(call fn.ABSOLUTE,$(CONTRIB.build/)lib)"

ifeq (1,$(FEATURE.fdk_aac))
FFMPEG.CONFIGURE.extra += \
    --enable-nonfree \
    --enable-libfdk-aac \
    --enable-encoder=libfdk_aac
endif

FFMPEG.CONFIGURE.extra += \
    --enable-muxer=matroska \
    --enable-muxer=webm \
    --enable-muxer=mov \
    --enable-muxer=mp4 \
    --enable-muxer=psp \
    --enable-muxer=ipod

## check against tuple: B-SYSTEM where B is { 0 | 1 } for cross-compiling flag
ifeq (0-cygwin,$(BUILD.cross)-$(BUILD.system))
    FFMPEG.GCC.args.extra += -fno-common
else ifeq (darwin,$(BUILD.system))
    ## section for darwin-archs
    FFMPEG.CONFIGURE.extra += --enable-cross-compile --arch=$(BUILD.machine) --target-os=darwin
else ifeq (1-mingw,$(BUILD.cross)-$(BUILD.system))
    FFMPEG.CONFIGURE.extra += \
        --target-os=mingw32 \
        --arch=$(BUILD.machine) \
        --enable-cross-compile --cross-prefix=$(BUILD.cross.prefix)
    FFMPEG.GCC.args.extra += -fno-common
    ifeq (1,$(FEATURE.local_pkgconfig))
        FFMPEG.CONFIGURE.extra += --pkg-config="$(call fn.ABSOLUTE,$(CONTRIB.build/)bin/$(PKGCONFIG.exe))"
    else
        FFMPEG.CONFIGURE.extra += --pkg-config=$(PKGCONFIG.exe)
    endif
endif

ifneq (none,$(FFMPEG.GCC.g))
    FFMPEG.CONFIGURE.extra += --enable-debug
    ifeq (max,$(FFMPEG.GCC.g))
        FFMPEG.CONFIGURE.extra += --extra-cflags="$(call fn.ARGS,FFMPEG.GCC,*archs *sysroot *minver ?extra) -I$(call fn.ABSOLUTE,$(CONTRIB.build/)include) -DDEBUG"
    else
        FFMPEG.CONFIGURE.extra += --extra-cflags="$(call fn.ARGS,FFMPEG.GCC,*archs *sysroot *minver ?extra) -I$(call fn.ABSOLUTE,$(CONTRIB.build/)include) -DNDEBUG"
    endif
else
    FFMPEG.CONFIGURE.extra += --disable-debug
    FFMPEG.CONFIGURE.extra += --extra-cflags="$(call fn.ARGS,FFMPEG.GCC,*archs *sysroot *minver ?extra) -I$(call fn.ABSOLUTE,$(CONTRIB.build/)include) -DNDEBUG"
endif

ifeq (none,$(FFMPEG.GCC.O))
    FFMPEG.CONFIGURE.extra += --disable-optimizations
endif

## not supported in release/11 branch without our patch
## ifeq (1,$(FEATURE.qsv))
##   FFMPEG.CONFIGURE.extra += --enable-qsv
## endif

## enable compile verbosity
FFMPEG.BUILD.extra = V=1

##
## llvm inline assembler (used in llvm-gcc and clang) runs out of registers
## on darwin i386 - unclear if it is a source code or llvm bug.
##
ifeq (darwin-i386,$(BUILD.system)-$(BUILD.machine))
    ## optimize mode hack: use clang
    ifneq (none,$(FFMPEG.GCC.O))
        FFMPEG.GCC.gcc = clang
    endif

    ## debug mode hack: omit frame pointer
    ifneq (none,$(FFMPEG.GCC.g))
        FFMPEG.GCC.args.extra += -fomit-frame-pointer
    endif
endif

## For POSIX.1-2001
ifeq (solaris,$(BUILD.system))
    FFMPEG.CONFIGURE.extra += --extra-libs=/usr/lib/values-xpg6.o
endif

## MPC8 Doesn't compile on SPARC
ifeq (solaris-sparc,$(BUILD.system)-$(BUILD.machine))
    FFMPEG.CONFIGURE.extra += --disable-demuxer=mpc8
endif