#
#  Static Audio/Video libs (ffmpeg version) build
#  Copyright (C) 2014 Jaroslav Kysela
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

DIR :=  $(dir $(lastword $(MAKEFILE_LIST)))
include $(DIR)/.config.mk

ifneq (,$(filter i386 i486 i586 i686 pentium,$(ARCH)))
FFMPEG_HOST   := $(ARCH)-linux-gnu
FFMPEG_TARGET := x86-linux-gcc
endif

unexport CFLAGS
unexport LDFLAGS


# ##############################################################################
# Upstream Packages
# ##############################################################################

EXTLIBS        =
COMPONENTS     = avutil avcodec avformat swscale avresample swresample avfilter
PROTOCOLS      = file http https hls mmsh mmst rtmp rtmpe rtmps rtmpt rtmpte rtmpts \
                 ffrtmpcrypt ffrtmphttp rtp srtp tcp udp udplite unix crypto
DECODERS       = mpeg2video mp2 aac vorbis ac3 eac3 aac_latm opus h264 hevc theora flac
ENCODERS       = mpeg2video mp2 aac vorbis flac
MUXERS         = mpegts matroska mp4
DEMUXERS       = mpegts matroska hls flv live_flv
BSFS           = h264_mp4toannexb hevc_mp4toannexb
FILTERS        = yadif format hwupload hwdownload scale null aresample anull
HWACCELS       =

NASM_VER       = 2.15.05
NASM           = nasm-$(NASM_VER)
NASM_TB        = $(NASM).tar.gz
NASM_URL       = https://www.nasm.us/pub/nasm/releasebuilds/$(NASM_VER)/$(NASM_TB)
NASM_SHA1      = 8a2a60b01d563c32dd216f94a99a20e6e31fd8aa
NASM_DIFFS     = remove-invalid-pure_func-qualifiers.diff

LIBX264_VER    = d2907f67227cbf38ac957efed84c532b12ce19cc
LIBX264        = x264-$(LIBX264_VER)
LIBX264_TB     = $(LIBX264).tar.bz2
LIBX264_URL    = https://code.videolan.org/videolan/x264/-/archive/$(LIBX264_VER)/$(LIBX264_TB)
LIBX264_SHA1   = 6b69f9af34ddfb9bc0bbfedb0b41a0b8b6c2771a

LIBX265_VER    = 3.5
LIBX265        = x265_$(LIBX265_VER)
LIBX265_TB     = $(LIBX265).tar.gz
LIBX265_URL    = https://bitbucket.org/multicoreware/x265_git/downloads/$(LIBX265_TB)
LIBX265_SHA1   = dc8e70f441991289a9a34fd37e1649d59435bfae
ifeq ($(CONFIG_PIE),yes)
LIBX265_DIFFS  = libx265.pie.diff
else
LIBX265_DIFFS  = libx265.pic.diff
endif
LIBX265_DIFFS  += libx265-silence.patch

LIBVPX_VER     = 1.9.0
LIBVPX         = libvpx-$(LIBVPX_VER)
LIBVPX_TB      = $(LIBVPX).tar.gz
LIBVPX_URL     = https://github.com/webmproject/libvpx/archive/v$(LIBVPX_VER)/$(LIBVPX_TB)
LIBVPX_SHA1    = 2ab8203ad8922bdf3256e4a197d1348fa8db9a62

LIBOGG         = libogg-1.3.4
LIBOGG_TB      = $(LIBOGG).tar.gz
LIBOGG_URL     = https://ftp.osuosl.org/pub/xiph/releases/ogg/$(LIBOGG_TB)
LIBOGG_SHA1    = 851cef020b346d44893e5d1c3dab83c675d479d9

LIBTHEORA      = libtheora-1.2.0alpha1
LIBTHEORA_TB   = $(LIBTHEORA).tar.gz
LIBTHEORA_URL  = https://ftp.osuosl.org/pub/xiph/releases/theora/$(LIBTHEORA_TB)
LIBTHEORA_SHA1 = f03e6b1648b7574a249ee19cd386ff3d5c9deb84

LIBVORBIS      = libvorbis-1.3.7
LIBVORBIS_TB   = $(LIBVORBIS).tar.gz
LIBVORBIS_URL  = https://ftp.osuosl.org/pub/xiph/releases/vorbis/$(LIBVORBIS_TB)
LIBVORBIS_SHA1 = 2b415495f89b103138a23da5017a2a00837c6c94


LIBFDKAAC_VER  = 2.0.2
LIBFDKAAC      = fdk-aac-$(LIBFDKAAC_VER)
LIBFDKAAC_TB   = v$(LIBFDKAAC_VER).tar.gz
LIBFDKAAC_URL  = https://github.com/mstorsjo/fdk-aac/archive/refs/tags/$(LIBFDKAAC_TB)
LIBFDKAAC_SHA1 = 8d711c298d1a562f8e5bedb0ca8dc39365efe93b

LIBOPUS        = opus-1.3.1
LIBOPUS_TB     = $(LIBOPUS).tar.gz
LIBOPUS_URL    = https://archive.mozilla.org/pub/opus/$(LIBOPUS_TB)
LIBOPUS_SHA1   = ed226536537861c9f0f1ef7ca79dffc225bc181b

FFNVCODEC_VER  = 11.1.5.0
FFNVCODEC      = nv-codec-headers-$(FFNVCODEC_VER)
FFNVCODEC_TB   = $(FFNVCODEC).tar.gz
FFNVCODEC_URL  = https://github.com/FFmpeg/nv-codec-headers/releases/download/n$(FFNVCODEC_VER)/nv-codec-headers-$(FFNVCODEC_VER).tar.gz
FFNVCODEC_SHA1 = 89bee0d3025b813c513084ad8546b0261623fbb0

FFMPEG         = ffmpeg-4.4.1
FFMPEG_TB      = $(FFMPEG).tar.bz2
FFMPEG_URL     = https://ffmpeg.org/releases/$(FFMPEG_TB)
FFMPEG_SHA1    = 49306f284475014b8e68bff886aaeeaf0723810c


# ##############################################################################
# Library Config
# ##############################################################################

LIB_NAME  := ffmpeg
LIB_ROOT  := $(BUILDDIR)/$(LIB_NAME)
EBUILDIR  := $(LIB_ROOT)/build
EPREFIX0  := ffmpeg
EPREFIX   := $(EBUILDIR)/$(EPREFIX0)
LIB_FILES := \
		$(LIB_ROOT)/$(NASM)/.tvh_download \
		$(LIB_ROOT)/$(NASM)/.tvh_build \
		$(LIB_ROOT)/$(LIBX264)/.tvh_download \
		$(LIB_ROOT)/$(LIBX264)/.tvh_build \
		$(LIB_ROOT)/$(LIBX265)/.tvh_download \
		$(LIB_ROOT)/$(LIBX265)/.tvh_build \
		$(LIB_ROOT)/$(LIBVPX)/.tvh_download \
		$(LIB_ROOT)/$(LIBVPX)/.tvh_build \
		$(LIB_ROOT)/$(LIBTHEORA)/.tvh_download \
		$(LIB_ROOT)/$(LIBTHEORA)/.tvh_build \
		$(LIB_ROOT)/$(LIBOGG)/.tvh_download \
		$(LIB_ROOT)/$(LIBOGG)/.tvh_build \
		$(LIB_ROOT)/$(LIBVORBIS)/.tvh_download \
		$(LIB_ROOT)/$(LIBVORBIS)/.tvh_build \
		$(LIB_ROOT)/$(LIBFDKAAC)/.tvh_download \
		$(LIB_ROOT)/$(LIBFDKAAC)/.tvh_build \
		$(LIB_ROOT)/$(LIBOPUS)/.tvh_download \
		$(LIB_ROOT)/$(LIBOPUS)/.tvh_build \
		$(LIB_ROOT)/$(FFNVCODEC)/.tvh_download \
		$(LIB_ROOT)/$(FFNVCODEC)/.tvh_build \
		$(LIB_ROOT)/$(FFMPEG)/.tvh_download \
		$(LIB_ROOT)/$(FFMPEG)/.tvh_build \
		$(EPREFIX)

include $(DIR)/Makefile.static

.PHONY: build $(PHONY)
build: $(LIB_ROOT)/$(FFMPEG)/.tvh_build
	$(call LIBCACHEGET_TIMESTAMP)


# ##############################################################################
# Build Rules
# ##############################################################################

export PATH := $(LIB_ROOT)/build/ffmpeg/bin:$(PATH)

ifeq ($(CONFIG_PIE),yes)
CFLAGS_PI = -fPIE
else
CFLAGS_PI = -fPIC
endif

ECFLAGS   := -I$(EPREFIX)/include $(CFLAGS_PI)
ELIBS     := -L$(EPREFIX)/lib -ldl

AUTOGEN   := ./autogen.sh

CONFIGURE := FFMPEG_PREFIX=$(EPREFIX) \
             PKG_CONFIG=$(ROOTDIR)/support/pkg-config.ffmpeg \
             ./configure --prefix=/ffmpeg --enable-static --disable-shared
CONFIGURE_PI := CC="$(COMPILER) $(CFLAGS_PI)" $(CONFIGURE)
CONFIGURE_FFMPEG := $(CONFIGURE)

# ##############################################################################
# NASM
#

$(LIB_ROOT)/$(NASM)/.tvh_download:
	$(call DOWNLOAD,$(NASM_URL),$(LIB_ROOT)/$(NASM_TB),$(NASM_SHA1))
	$(call UNTAR,$(NASM_TB),z)
	$(call PATCH,$(NASM),$(NASM_DIFFS))
	@touch $@

$(LIB_ROOT)/$(NASM)/.tvh_build: \
		$(LIB_ROOT)/$(NASM)/.tvh_download
	cd $(LIB_ROOT)/$(NASM) && $(CONFIGURE_PI) \
		--libdir=/$(EPREFIX0)/lib
	DESTDIR=$(EBUILDIR) \
		$(MAKE) -C $(LIB_ROOT)/$(NASM) install
	@touch $@


# ##############################################################################
# LIBX264
#

ifeq (yes,$(CONFIG_LIBX264))

EXTLIBS  += libx264
ENCODERS += libx264
FFMPEG_DIFFS += ffmpeg.libx264.diff

endif


ifeq (yes,$(CONFIG_LIBX264_STATIC))

ifneq (,$(DEB_BUILD_GNU_TYPE))
LIBX264_HOST := --host=$(DEB_BUILD_GNU_TYPE)
endif

ifeq (,$(LIBX264_HOST))
ifneq (,$(FFMPEG_HOST))
LIBX264_HOST := --host=$(FFMPEG_HOST)
endif
endif

$(LIB_ROOT)/$(LIBX264)/.tvh_download:
	$(call DOWNLOAD,$(LIBX264_URL),$(LIB_ROOT)/$(LIBX264_TB),$(LIBX264_SHA1))
	$(call UNTAR,$(LIBX264_TB),j)
	@touch $@

$(LIB_ROOT)/$(LIBX264)/.tvh_build: \
		$(LIB_ROOT)/$(NASM)/.tvh_build \
		$(LIB_ROOT)/$(LIBX264)/.tvh_download
	cd $(LIB_ROOT)/$(LIBX264) && $(CONFIGURE) \
		--extra-asflags="-DPIC" \
		--extra-cflags="$(CFLAGS_PI)" \
		--disable-cli \
		--disable-swscale \
		--disable-lavf \
		--disable-avs \
		--disable-ffms \
		--disable-gpac \
		--disable-lsmash \
		$(LIBX264_HOST)
	DESTDIR=$(EBUILDIR) \
		$(MAKE) -C $(LIB_ROOT)/$(LIBX264) install
	@touch $@

else

$(LIB_ROOT)/$(LIBX264)/.tvh_download:
	@mkdir -p $(LIB_ROOT)/$(LIBX264)
	@touch $@

$(LIB_ROOT)/$(LIBX264)/.tvh_build: \
	$(LIB_ROOT)/$(LIBX264)/.tvh_download
	@touch $@

endif


# ##############################################################################
# LIBX265
#

ifeq (yes,$(CONFIG_LIBX265))

EXTLIBS  += libx265
ENCODERS += libx265

endif


ifeq (yes,$(CONFIG_LIBX265_STATIC))

$(LIB_ROOT)/$(LIBX265)/.tvh_download:
	$(call DOWNLOAD,$(LIBX265_URL),$(LIB_ROOT)/$(LIBX265_TB),$(LIBX265_SHA1))
	$(call UNTAR,$(LIBX265_TB),z)
	$(call PATCH,$(LIBX265),$(LIBX265_DIFFS))
	@touch $@

$(LIB_ROOT)/$(LIBX265)/.tvh_build: \
		$(LIB_ROOT)/$(NASM)/.tvh_build \
		$(LIB_ROOT)/$(LIBX265)/.tvh_download
	cd $(LIB_ROOT)/$(LIBX265)/build/linux && cmake -G "Unix Makefiles" \
		-DCMAKE_INSTALL_PREFIX="/ffmpeg" \
		-DENABLE_SHARED:BOOL=OFF \
		../../source
	DESTDIR=$(EBUILDIR) \
		$(MAKE) -C $(LIB_ROOT)/$(LIBX265)/build/linux install
	mv $(EPREFIX)/lib/pkgconfig/x265.pc $(EPREFIX)/lib/pkgconfig/x265.pc.old
	sed -e 's,-ldl,-ldl -lpthread,g' \
		< $(EPREFIX)/lib/pkgconfig/x265.pc.old \
		> $(EPREFIX)/lib/pkgconfig/x265.pc
	@touch $@

else

$(LIB_ROOT)/$(LIBX265)/.tvh_download:
	@mkdir -p $(LIB_ROOT)/$(LIBX265)
	@touch $@

$(LIB_ROOT)/$(LIBX265)/.tvh_build: \
	$(LIB_ROOT)/$(LIBX265)/.tvh_download
	@touch $@

endif


# ##############################################################################
# LIBVPX
#

ifeq (yes,$(CONFIG_LIBVPX))

EXTLIBS  += libvpx
ENCODERS += libvpx_vp8 libvpx_vp9

endif


ifeq (yes,$(CONFIG_LIBVPX_STATIC))

ifneq (,$(FFMPEG_TARGET))
LIBVPX_TARGET := --target=$(FFMPEG_TARGET)
endif

$(LIB_ROOT)/$(LIBVPX)/.tvh_download:
	$(call DOWNLOAD,$(LIBVPX_URL),$(LIB_ROOT)/$(LIBVPX_TB),$(LIBVPX_SHA1))
	$(call UNTAR,$(LIBVPX_TB),z)
	@touch $@

$(LIB_ROOT)/$(LIBVPX)/.tvh_build: \
		$(LIB_ROOT)/$(NASM)/.tvh_build \
		$(LIB_ROOT)/$(LIBVPX)/.tvh_download
	cd $(LIB_ROOT)/$(LIBVPX) && \
		$(CONFIGURE) \
		--extra-cflags="$(CFLAGS_PI)" \
		--disable-examples \
		--disable-docs \
		--disable-unit-tests \
		$(LIBVPX_TARGET)
	DIST_DIR=$(EPREFIX) \
		$(MAKE) -C $(LIB_ROOT)/$(LIBVPX) install
	@touch $@

else

$(LIB_ROOT)/$(LIBVPX)/.tvh_download:
	@mkdir -p $(LIB_ROOT)/$(LIBVPX)
	@touch $@

$(LIB_ROOT)/$(LIBVPX)/.tvh_build: \
	$(LIB_ROOT)/$(LIBVPX)/.tvh_download
	@touch $@

endif


# ##############################################################################
# LIBOGG
#

ifeq (yes,$(CONFIG_LIBOGG_STATIC))

$(LIB_ROOT)/$(LIBOGG)/.tvh_download:
	$(call DOWNLOAD,$(LIBOGG_URL),$(LIB_ROOT)/$(LIBOGG_TB),$(LIBOGG_SHA1))
	$(call UNTAR,$(LIBOGG_TB),z)
	@touch $@

$(LIB_ROOT)/$(LIBOGG)/.tvh_build: \
		$(LIB_ROOT)/$(NASM)/.tvh_build \
		$(LIB_ROOT)/$(LIBOGG)/.tvh_download
	cd $(LIB_ROOT)/$(LIBOGG) && \
		$(CONFIGURE_PI) \
		--libdir=/$(EPREFIX0)/lib
	DESTDIR=$(EBUILDIR) \
		$(MAKE) -C $(LIB_ROOT)/$(LIBOGG) install
	@touch $@

endif


# ##############################################################################
# LIBTHEORA
#

ifeq (yes,$(CONFIG_LIBTHEORA))

EXTLIBS  += libtheora
ENCODERS += libtheora

endif


ifeq (yes,$(CONFIG_LIBTHEORA_STATIC))

ifeq (,$(LIBTHEORA_HOST))
ifneq (,$(FFMPEG_HOST))
LIBTHEORA_HOST := --host=$(FFMPEG_HOST)
endif
endif

$(LIB_ROOT)/$(LIBTHEORA)/.tvh_download:
	$(call DOWNLOAD,$(LIBTHEORA_URL),$(LIB_ROOT)/$(LIBTHEORA_TB),$(LIBTHEORA_SHA1))
	$(call UNTAR,$(LIBTHEORA_TB),z)
	@touch $@

$(LIB_ROOT)/$(LIBTHEORA)/.tvh_build: \
		$(LIB_ROOT)/$(NASM)/.tvh_build \
		$(LIB_ROOT)/$(LIBOGG)/.tvh_build \
		$(LIB_ROOT)/$(LIBTHEORA)/.tvh_download
	cd $(LIB_ROOT)/$(LIBTHEORA) && \
		$(CONFIGURE_PI) \
		--libdir=/$(EPREFIX0)/lib \
		--with-ogg=$(EPREFIX) \
		--disable-examples \
		--disable-spec \
		$(LIBTHEORA_HOST)
	DESTDIR=$(EBUILDIR) \
		$(MAKE) -C $(LIB_ROOT)/$(LIBTHEORA) install
	@touch $@

else

$(LIB_ROOT)/$(LIBTHEORA)/.tvh_download:
	@mkdir -p $(LIB_ROOT)/$(LIBTHEORA)
	@touch $@

$(LIB_ROOT)/$(LIBTHEORA)/.tvh_build: \
	$(LIB_ROOT)/$(LIBTHEORA)/.tvh_download
	@touch $@

endif


# ##############################################################################
# LIBVORBIS
#

ifeq (yes,$(CONFIG_LIBVORBIS))

EXTLIBS  += libvorbis
DECODERS += libvorbis
ENCODERS += libvorbis

endif


ifeq (yes,$(CONFIG_LIBVORBIS_STATIC))

$(LIB_ROOT)/$(LIBVORBIS)/.tvh_download:
	$(call DOWNLOAD,$(LIBVORBIS_URL),$(LIB_ROOT)/$(LIBVORBIS_TB),$(LIBVORBIS_SHA1))
	$(call UNTAR,$(LIBVORBIS_TB),z)
	@touch $@

$(LIB_ROOT)/$(LIBVORBIS)/.tvh_build: \
		$(LIB_ROOT)/$(NASM)/.tvh_build \
		$(LIB_ROOT)/$(LIBOGG)/.tvh_build \
		$(LIB_ROOT)/$(LIBVORBIS)/.tvh_download
	cd $(LIB_ROOT)/$(LIBVORBIS) && \
		$(CONFIGURE_PI) \
		--libdir=/$(EPREFIX0)/lib \
		--with-ogg=$(EPREFIX)
	DESTDIR=$(EBUILDIR) \
		$(MAKE) -C $(LIB_ROOT)/$(LIBVORBIS) install
	@touch $@

else

$(LIB_ROOT)/$(LIBVORBIS)/.tvh_download:
	@mkdir -p $(LIB_ROOT)/$(LIBVORBIS)
	@touch $@

$(LIB_ROOT)/$(LIBVORBIS)/.tvh_build: \
	$(LIB_ROOT)/$(LIBVORBIS)/.tvh_download
	@touch $@

endif


# ##############################################################################
# LIBFDKAAC
#

ifeq (yes,$(CONFIG_LIBFDKAAC))

EXTLIBS  += libfdk-aac
ENCODERS += libfdk_aac

endif


ifeq (yes,$(CONFIG_LIBFDKAAC_STATIC))

$(LIB_ROOT)/$(LIBFDKAAC)/.tvh_download:
	$(call DOWNLOAD,$(LIBFDKAAC_URL),$(LIB_ROOT)/$(LIBFDKAAC_TB),$(LIBFDKAAC_SHA1))
	$(call UNTAR,$(LIBFDKAAC_TB),z)
	@touch $@

$(LIB_ROOT)/$(LIBFDKAAC)/.tvh_build: \
		$(LIB_ROOT)/$(LIBFDKAAC)/.tvh_download
	cd $(LIB_ROOT)/$(LIBFDKAAC) && $(AUTOGEN) && CXXFLAGS="-std=c++98 -fPIC" $(CONFIGURE_PI) \
		--libdir=/$(EPREFIX0)/lib
	DESTDIR=$(EBUILDIR) \
		$(MAKE) -C $(LIB_ROOT)/$(LIBFDKAAC) install
	@touch $@

else

$(LIB_ROOT)/$(LIBFDKAAC)/.tvh_download:
	@mkdir -p $(LIB_ROOT)/$(LIBFDKAAC)
	@touch $@

$(LIB_ROOT)/$(LIBFDKAAC)/.tvh_build: \
	$(LIB_ROOT)/$(LIBFDKAAC)/.tvh_download
	@touch $@

endif


# ##############################################################################
# LIBOPUS
#

ifeq (yes,$(CONFIG_LIBOPUS))

EXTLIBS  += libopus
ENCODERS += libopus

endif


ifeq (yes,$(CONFIG_LIBOPUS_STATIC))

$(LIB_ROOT)/$(LIBOPUS)/.tvh_download:
	$(call DOWNLOAD,$(LIBOPUS_URL),$(LIB_ROOT)/$(LIBOPUS_TB),$(LIBOPUS_SHA1))
	$(call UNTAR,$(LIBOPUS_TB),z)
	@touch $@

$(LIB_ROOT)/$(LIBOPUS)/.tvh_build: \
		$(LIB_ROOT)/$(NASM)/.tvh_build \
		$(LIB_ROOT)/$(LIBOPUS)/.tvh_download
	cd $(LIB_ROOT)/$(LIBOPUS) && $(CONFIGURE_PI) \
		--disable-doc \
		--disable-extra-programs
	DESTDIR=$(EBUILDIR) \
		$(MAKE) -C $(LIB_ROOT)/$(LIBOPUS) install
	@touch $@

else

$(LIB_ROOT)/$(LIBOPUS)/.tvh_download:
	@mkdir -p $(LIB_ROOT)/$(LIBOPUS)
	@touch $@

$(LIB_ROOT)/$(LIBOPUS)/.tvh_build: \
	$(LIB_ROOT)/$(LIBOPUS)/.tvh_download
	@touch $@

endif


# ##############################################################################
# NVENC
#

ifeq (yes,$(CONFIG_NVENC))

## YOU MUST INSTALL CUDA from NVIDIA for "libnpp" 
EXTLIBS   += nvenc cuvid libnpp
ENCODERS  += h264_nvenc hevc_nvenc
DECODERS  += h264_cuvid hevc_cuvid
HWACCELS  += h264_nvdec hevc_nvdec vp8_nvdec vp9_nvdec mjpeg_nvdec mpeg1_nvdec mpeg2_nvdec mpeg4_nvdec
ECFLAGS   += -I/usr/local/cuda/include

## NVIDIA LIB for "libnpp" 
CONFIGURE_FFMPEG += --extra-ldflags=-L/usr/local/cuda/lib64

$(LIB_ROOT)/$(FFNVCODEC)/.tvh_download:
	$(call DOWNLOAD,$(FFNVCODEC_URL),$(LIB_ROOT)/$(FFNVCODEC_TB),$(FFNVCODEC_SHA1))
	$(call UNTAR,$(FFNVCODEC_TB),z)
	@touch $@

$(LIB_ROOT)/$(FFNVCODEC)/.tvh_build: \
		$(LIB_ROOT)/$(FFNVCODEC)/.tvh_download
	mv $(LIB_ROOT)/$(FFNVCODEC)/Makefile $(LIB_ROOT)/$(FFNVCODEC)/Makefile.old
	sed -e 's,PREFIX = /usr/local,PREFIX ?= /usr/local,g' \
		< $(LIB_ROOT)/$(FFNVCODEC)/Makefile.old \
		> $(LIB_ROOT)/$(FFNVCODEC)/Makefile
	DESTDIR=$(EBUILDIR) PREFIX=/ffmpeg \
		$(MAKE) -C $(LIB_ROOT)/$(FFNVCODEC) install
	@touch $@

else

$(LIB_ROOT)/$(FFNVCODEC)/.tvh_download:
	@mkdir $(LIB_ROOT)/$(FFNVCODEC)
	@touch $@

$(LIB_ROOT)/$(FFNVCODEC)/.tvh_build: \
		$(LIB_ROOT)/$(FFNVCODEC)/.tvh_download
	@touch $@

endif


# ##############################################################################
# VAAPI
#

ifeq (yes,$(CONFIG_VAAPI))

EXTLIBS  += vaapi
ENCODERS += h264_vaapi hevc_vaapi vp8_vaapi vp9_vaapi
HWACCELS += mpeg2_vaapi h264_vaapi hevc_vaapi vp9_vaapi
FILTERS  += deinterlace_vaapi scale_vaapi
FFMPEG_DIFFS += ffmpeg.vaapi_encode.diff

endif


# ##############################################################################
# MMAL
#

ifeq (yes,$(CONFIG_MMAL))

EXTLIBS  += mmal
HWACCELS += h264_mmal mpeg2_mmal
DECODERS += h264_mmal

endif


# ##############################################################################
# OMX
#

ifeq (yes,$(CONFIG_OMX))

EXTLIBS  += omx
ENCODERS += h264_omx

endif

ifeq (yes,$(CONFIG_OMX_RPI))

EXTLIBS  += omx_rpi

endif


# ##############################################################################
# Misc.
#

ifneq (,$(filter yes,$(CONFIG_LIBVORBIS) $(CONFIG_LIBTHEORA)))

MUXERS += ogg

endif


ifneq (,$(filter yes,$(CONFIG_NVENC) $(CONFIG_LIBFDKAAC)))

EXTLIBS += nonfree

endif


# ##############################################################################
# FFMPEG
#

$(LIB_ROOT)/$(FFMPEG)/.tvh_download:
	@mkdir -p $(EBUILDIR)
	$(call DOWNLOAD,$(FFMPEG_URL),$(LIB_ROOT)/$(FFMPEG_TB),$(FFMPEG_SHA1))
	$(call UNTAR,$(FFMPEG_TB),j)
	$(call PATCH,$(FFMPEG),$(FFMPEG_DIFFS))
	@touch $@

$(LIB_ROOT)/$(FFMPEG)/.tvh_build: \
		$(LIB_ROOT)/$(NASM)/.tvh_build \
		$(LIB_ROOT)/$(LIBX264)/.tvh_build \
		$(LIB_ROOT)/$(LIBX265)/.tvh_build \
		$(LIB_ROOT)/$(LIBVPX)/.tvh_build \
		$(LIB_ROOT)/$(LIBTHEORA)/.tvh_build \
		$(LIB_ROOT)/$(LIBVORBIS)/.tvh_build \
		$(LIB_ROOT)/$(LIBFDKAAC)/.tvh_build \
		$(LIB_ROOT)/$(LIBOPUS)/.tvh_build \
		$(LIB_ROOT)/$(FFNVCODEC)/.tvh_build \
		$(LIB_ROOT)/$(FFMPEG)/.tvh_download
	cd $(LIB_ROOT)/$(FFMPEG) && $(CONFIGURE_FFMPEG) \
		--disable-all \
		--enable-gpl \
		--enable-nonfree \
		--extra-cflags="$(ECFLAGS)" \
		--extra-libs="$(ELIBS)" \
		--pkg-config="$(ROOTDIR)/support/pkg-config.ffmpeg" \
		--enable-openssl \
		$(foreach component,$(COMPONENTS),--enable-$(component)) \
		$(foreach extlib,$(EXTLIBS),--enable-$(extlib)) \
		$(foreach protocol,$(PROTOCOLS),--enable-protocol=$(protocol)) \
		$(foreach decoder,$(DECODERS),--enable-decoder=$(decoder)) \
		$(foreach encoder,$(ENCODERS),--enable-encoder=$(encoder)) \
		$(foreach demuxer,$(DEMUXERS),--enable-demuxer=$(demuxer)) \
		$(foreach muxer,$(MUXERS),--enable-muxer=$(muxer)) \
		$(foreach bsf,$(BSFS),--enable-bsf=$(bsf)) \
		$(foreach filter,$(FILTERS),--enable-filter=$(filter)) \
		$(foreach hwaccel,$(HWACCELS),--enable-hwaccel=$(hwaccel)) \
                --disable-programs \
                --disable-doc \
                --disable-htmlpages \
                --disable-manpages \
                --disable-podpages \
                --disable-txtpages
	DESTDIR=$(EBUILDIR) \
		$(MAKE) -C $(LIB_ROOT)/$(FFMPEG) install
	@touch $@