#!/bin/bash
echo "Building Raspberry Pi 2 - ARMv7 ffmpeg"
echo "For right build u must have installed CrossTool-ng tools"
echo "WARNING! CrossTool must be compiled for hard float!!!"
ARCH=$(uname -m)

set -e

if [ "$ARCH" == "armv7l" ]; then
	echo "U cant compile FFMPEG on Raspberry! I must compile on any Linux distr."
	exit
fi

GENERAL="\
   --enable-cross-compile \
   --extra-libs="-lgcc" \
   --arch=arm \
   --cc=/opt/cross/x-tools/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc \
   --cross-prefix=/opt/cross/x-tools/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi- \
   --nm=/opt/cross/x-tools/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-nm"
MODULES="\
   --disable-avdevice \
   --disable-filters \
   --disable-programs \
   --disable-network \
   --disable-avfilter \
   --disable-postproc \
   --disable-encoders \
   --disable-protocols \
   --disable-hwaccels \
   --disable-doc"

VIDEO_DECODERS="\
   --enable-decoder=h264 \
   --enable-decoder=mpeg4 \
   --enable-decoder=mpeg2video \
   --enable-decoder=mjpeg \
   --enable-decoder=mjpegb"

AUDIO_DECODERS="\
    --enable-decoder=aac \
    --enable-decoder=aac_latm \
    --enable-decoder=atrac3 \
    --enable-decoder=atrac3p \
    --enable-decoder=mp3 \
    --enable-decoder=pcm_s16le \
    --enable-decoder=pcm_s8"
  
DEMUXERS="\
    --enable-demuxer=h264 \
    --enable-demuxer=m4v \
    --enable-demuxer=mpegvideo \
    --enable-demuxer=mpegps \
    --enable-demuxer=mp3 \
    --enable-demuxer=avi \
    --enable-demuxer=aac \
    --enable-demuxer=pmp \
    --enable-demuxer=oma \
    --enable-demuxer=pcm_s16le \
    --enable-demuxer=pcm_s8 \
    --enable-demuxer=wav"

VIDEO_ENCODERS="\
	  --enable-encoder=huffyuv \
	  --enable-encoder=ffv1 \
	  --enable-encoder=mjpeg"

AUDIO_ENCODERS="\
	  --enable-encoder=pcm_s16le"

MUXERS="\
  	  --enable-muxer=avi"


PARSERS="\
    --enable-parser=h264 \
    --enable-parser=mpeg4video \
    --enable-parser=mpegaudio \
    --enable-parser=mpegvideo \
    --enable-parser=aac \
    --enable-parser=aac_latm"

function build_ARMv7
{
./configure --target-os=linux \
    --prefix=./linux/armv7 \
    ${GENERAL} \
    --extra-cflags=" -O3 -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300 -mfpu=neon -marm -march=armv7-a" \
    --disable-shared \
    --enable-static \
    --enable-zlib \
    --disable-everything \
    ${MODULES} \
    ${VIDEO_DECODERS} \
    ${AUDIO_DECODERS} \
    ${VIDEO_ENCODERS} \
    ${AUDIO_ENCODERS} \
    ${DEMUXERS} \
    ${MUXERS} \
    ${PARSERS}
make clean
make install
}

build_ARMv7
echo Linux RPI builds finished