#!/bin/bash
sourcedir="$HOME/.local/src/"
mkdir "$sourcedir"
export CFLAGS='-march=native -O3 -pipe -fstack-protector -Wall'
export CXXFLAGS='-march=native -O3 -pipe -fstack-protector -Wall'

## Installs the build tools and VDPAU drivers for mesa
function installDependencies() {
	sudo apt-fast install -y cmake yasm autoconf build-essential mesa-vdpau-drivers \
		libvdpau-va-gl1
	
	# Remove Conflicts
	sudo apt-get autoremove libass{5,-dev} libx265{-43,-dev} -y
	
	# These packages are removed for some reason when removing libass from Ubuntu.
	sudo apt-fast install -y freepats gstreamer1.0-plugins-bad-faad \
		gstreamer1.0-plugins-bad-videoparsers libcdaudio1 libdca0 \
		libdirac-encoder0 libdirectfb-1.2-9 libfluidsynth1 libgme0 \
		libgstreamer-plugins-bad0.10-0 libgstreamer-plugins-bad1.0-0 libkate1 libmimic0 \
		libmms0 libmpg123-0 libofa0 libopencv-calib3d2.4 libopencv-contrib2.4 \
		libopencv-features2d2.4 libopencv-flann2.4 libopencv-legacy2.4 \
		libopencv-ml2.4 libopencv-objdetect2.4 libopencv-video2.4 libslv2-9 \
		libsoundtouch0 libspandsp2 libsrtp0 libwildmidi-config libwildmidi1 libzbar0 \
		libzvbi-common libzvbi0
	
	# Development Libraries
	sudo apt-fast install -y lib{pulse,asound2,jack}-dev \ # Audio
		lib{x264,vpx,theora,opus,vorbis,fdk-aac,x11}-dev \ # Video
		lib{freetype6,fribidi,fontconfig1,harfbuzz,enca}-dev \ # Subtitles
		lib{dvdread,dvdnav,bluray,cdio,cdio-cdda,cdio-paranoia}-dev \ # Media
		lib{va,vdpau}-dev # Hardware Accel
		
	## Bomi Development Libraries
	sudo apt-fast install qt5-default qttools5-dev-tools qtquick1-5-dev \
		lib{qt5svg5,qt5x11extras5,systemd,smbclient,glib2.0}-dev \
		lib{xv,bz2,xcb-icccm4,xcb-screensaver0,xcb-randr0,xcb-xtest0}-dev \
		qtdeclarative5-dev -y
		
	# Bomi Dependencies
	sudo apt-fast install qtdeclarative5-controls-plugin -y
}

## Compiles the source code, packages it into a deb and cleans up compiled files
## from the source tree.
function packageDeb() {
	make -j9
	sudo checkinstall --pkgname "$1" --pkgversion "$2" --provides "$3" -y
	make distclean; make clean
}

## Functions for downloading the latest git of each respective project.
function downloadX265() {
	git clone https://github.com/videolan/x265
}

function downloadFfmpeg() {
	git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg
}

function downloadLibass() {
	git clone https://github.com/libass/libass/
}

function downloadBomi() {
	git clone https://github.com/xylosper/bomi
}

## Builds the latest version of the libass subtitle library, which is needed by bomi.
function buildLibass() {
	cd "${sourcedir}/libass"
	./autogen.sh; ./configure prefix=/usr
	packageDeb "libass-git" "$(git rev-list --count HEAD)" "libass5, libass-dev"
}

## Bulds the latest version of x265 compiled with 10-bit encode support.
## If another package relies upon the stock libx265-43 package, that package might break.
## If there is breakage, I'll work for a solution in the immediate future.
function buildX265() {
	cd "${sourcedir}x265/build/linux"
	sudo apt-fast autoremove libx265{-43,-dev} -y # Conflicts with ffmpeg
	[[ $(arch) == x86_64 ]] && LDFLAGS+=',-z,noexecstack'
	cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX=/usr ../../source -DHIGH_BIT_DEPTH=1
	packageDeb "x265-10bit" "1.6" "x265"
}	

## Builds the latest version of ffmpeg with libass-git and x265-10bit-git support.
function buildFfmpeg() {
	cd ${sourcedir}ffmpeg
	./configure --prefix=/usr \
		--enable-gpl \
		--enable-nonfree \
		--enable-libass \
		--enable-libfreetype \
		--enable-libopus \
		--enable-libvorbis \
		--enable-libfdk-aac \
		--enable-libx265 \
		--enable-libx264 \
		--enable-libvpx \
		--enable-libtheora \
		--enable-libbluray \
		--enable-libcdio \
		--enable-libfreetype \
		--enable-libfribidi \
		--enable-libsmbclient \
			--enable-version3 \
		--enable-x11grab \
		--extra-cflags="-march=native -O3" \
		--extra-cxxflags="-march=native -O3"
	packageDeb "ffmpeg-git" "$(git rev-list --count HEAD)" "ffmpeg"
}

## Builds the latest git of Bomi using the version of ffmpeg that we compiled earlier,
## and with all features enabled. Please report missing features.
function buildBomi() {
	cd "${sourcedir}bomi"
	./download-libchardet
	./build-libchardet
	./configure --prefix=/usr/local
	packageDeb "bomi-git" "$(git rev-list --count HEAD)" "bomi"
}

function main() {
	cd "$sourcedir"
	installDependencies
	downloadX265; downloadFfmpeg; downloadLibass
	buildLibass; buildX265; buildFfmpeg
	downloadBomi; buildBomi ## Optional
}

main