#!/bin/sh

# Slackware build script for ffmpeg

# Written by core (eroc@linuxmail.org)
# Modified by Robby Workman <rworkman@slackbuilds.org>
# Modified by Heinz Wiesinger <pprkut@liwjatan.org>

PRGNAM=ffmpeg
VERSION=${VERSION:-0.8.7}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

# environment sanity checks
TEXI2HTML=$(which texi2html 2>/dev/null)

if [ "$TEXI2HTML" = "" ]; then
  echo "Could not find texi2html! Please make sure to have tetex or texlive installed"
  echo "and that texi2html is in PATH."
  exit 1
fi

# --enable-runtime-cpu is meant for libswscale only and
# has no influence on the other parts of ffmpeg so there's
# not really a point in bothering
PKGARCH=$(uname -m)_custom

# Configure ffmpeg features not autodetected by default
# Unfortunately ffmpeg's configure doesn't support --enable-feature=yes
# syntax, so we have to do it the complicated way :/

libcelt=""    ; [ "${CELT:-no}" != "no" ]         && libcelt="--enable-libcelt"
libdc1394=""  ; [ "${DC1394:-no}" != "no" ]       && libdc1394="--enable-libdc1394"
dirac_slow="" ; [ "${DIRAC:-no}" != "no" ]        && dirac_slow="--enable-libdirac"
libfrei0r=""  ; [ "${FREI0R:-no}" != "no" ]       && libfrei0r="--enable-frei0r"
libgsm=""     ; [ "${GSM:-no}" != "no" ]          && libgsm="--enable-libgsm"
libopencv=""  ; [ "${OPENCV:-no}" != "no" ]       && libopencv="--enable-libopencv"
librtmp=""    ; [ "${RTMP:-no}" != "no" ]         && librtmp="--enable-librtmp"
dirac_fast="" ; [ "${SCHROEDINGER:-no}" != "no" ] && dirac_fast="--enable-libschroedinger"
libspeex=""   ; [ "${SPEEX:-no}" != "no" ]        && libspeex="--enable-libspeex"
libvpx=""     ; [ "${VPX:-no}" != "no" ]          && libvpx="--enable-libvpx"
libxvid=""    ; [ "${XVID:-no}" != "no" ]         && libxvid="--enable-libxvid"

opencore_amr="" ; [ "${OPENCORE:-no}" != "no" ] && \
  opencore_amr="--enable-libopencore-amrnb --enable-libopencore-amrwb"
libfaac=""      ; [ "${FAAC:-no}" != "no" ]     && \
  { libfaac="--enable-libfaac" ; non_free="--enable-nonfree" ; }
openjpeg=""     ; [ "${JP2:-no}" != "no" ]      && \
  { openjpeg="--enable-libopenjpeg" ; \
    SLKCFLAGS="$SLKCFLAGS -I/usr/include/openjpeg-1.4" ; }

mp3lame="--enable-libmp3lame" ; [ "${LAME:-yes}" != "yes" ] && mp3lame=""
libx264="--enable-libx264"    ; [ "${X264:-yes}" != "yes" ] && libx264=""

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.bz2
cd $PRGNAM-$VERSION
chown -R root:root .
chmod -R u+w,go+r-w,a-s .

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --shlibdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --disable-debug \
  --enable-shared \
  --disable-static \
  --enable-pthreads \
  --enable-libtheora \
  --enable-libvorbis \
  --enable-gpl \
  --enable-version3 \
  --enable-postproc \
  --enable-swscale \
  --enable-x11grab \
  --enable-avfilter \
  --arch=$ARCH \
  $openjpeg \
  $libdc1394 \
  $mp3lame \
  $libfaac \
  $libxvid \
  $libx264 \
  $libspeex \
  $dirac_slow \
  $dirac_fast \
  $non_free \
  $libgsm \
  $libvpx \
  $librtmp \
  $opencore_amr \
  $libopencv \
  $libfrei0r \
  $libcelt

make
make install DESTDIR=$PKG
make install-man DESTDIR=$PKG

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | \
  grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG/usr/man -type f -exec gzip -9 {} \;

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a COPYING* CREDITS INSTALL LICENSE MAINTAINERS README RELEASE \
  VERSION doc/TODO* doc/*.txt $PKG/usr/doc/$PRGNAM-$VERSION
cp -a doc/*.html $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$PKGARCH-$BUILD$TAG.${PKGTYPE:-tgz}