#!/bin/bash
ulimit -s unlimited
shopt -s extglob

# ffmpeg.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter for Slackware ARM.
#
# Copyright 2010-2024  Heinz Wiesinger, Amsterdam, The Netherlands
# Copyright 2017, 2018, 2022, 2024  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
slackset_var_cwds

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# If PulseAudio is not found, disable it in the build:
if [ ! -r /usr/lib${LIBDIRSUFFIX}/pkgconfig/libpulse.pc ]; then
   PULSEAUDIO=no
fi

# Configure ffmpeg features not autodetected by default.
# You can enable a lot of optional (not-autodetected) features by
# passing variables to the script (VAR=yes/no ./ffmpeg.SlackBuild).
# Unfortunately ffmpeg's configure doesn't support --enable-feature=yes
# syntax, so we have to do it the complicated way :/
# Additional optional (autodetected) dependencies are:
# - bzip2
# - libva
# - libvdpau
# - libX11
# - libxcb
# - nvdec/nvenc
# - sdl2
# - xz
# - zlib

# Select one of these for HTTPS support
ssl=""          ; [ "${OPENSSL:-no}" != "no" ]  && \
  { ssl="--enable-openssl" ; non_free="--enable-nonfree" ; }
gnutls=""     ; [ "${GNUTLS:-yes}" != "no" ]      && gnutls="--enable-gnutls"

# Select one of these for RTMP[E] support
librtmp=""    ; [ "${RTMP:-no}" != "no" ]         && librtmp="--enable-librtmp"
gmp=""        ; [ "${GMP:-no}" != "no" ]          && gmp="--enable-gmp"
libgcrypt=""  ; [ "${GCRYPT:-yes}" != "no" ]      && libgcrypt="--enable-gcrypt"

# Select one of these for GLSL->SPIRV compilation (Required for Vulkan support)
libglslang="" ; [ "${GLSLANG:-no}" != "no" ]      && libglslang="--enable-libglslang"
shaderc=""    ; [ "${SHADERC:-yes}" != "no" ]     && libshaderc="--enable-libshaderc"

libx264=""    ; [ "${X264:-no}" != "no" ]         && libx264="--enable-libx264"
libcelt=""    ; [ "${CELT:-no}" != "no" ]         && libcelt="--enable-libcelt"
libdc1394=""  ; [ "${DC1394:-no}" != "no" ]       && libdc1394="--enable-libdc1394"
libgsm=""     ; [ "${GSM:-no}" != "no" ]          && libgsm="--enable-libgsm"
libxvid=""    ; [ "${XVID:-no}" != "no" ]         && libxvid="--enable-libxvid"
libiec61883=""; [ "${IEC61883:-no}" != "no" ]     && libiec61883="--enable-libiec61883"
libilbc=""    ; [ "${ILBC:-no}" != "no" ]         && libilbc="--enable-libilbc"
libmodplug="" ; [ "${MODPLUG:-no}" != "no" ]      && libmodplug="--enable-libmodplug"
libtwolame="" ; [ "${TWOLAME:-no}" != "no" ]      && libtwolame="--enable-libtwolame"
ladspa=""     ; [ "${LADSPA:-no}" != "no" ]       && ladspa="--enable-ladspa"
libflite=""   ; [ "${FLITE:-no}" != "no" ]        && libflite="--enable-libflite"
libx265=""    ; [ "${X265:-no}" != "no" ]         && libx265="--enable-libx265"
libzvbi=""    ; [ "${ZVBI:-no}" != "no" ]         && libzvbi="--enable-libzvbi"
libgme=""     ; [ "${GME:-no}" != "no" ]          && libgme="--enable-libgme"
libsnappy=""  ; [ "${SNAPPY:-no}" != "no" ]       && libsnappy="--enable-libsnappy"
libzmq=""     ; [ "${ZMQ:-no}" != "no" ]          && libzmq="--enable-libzmq"
libbs2b=""    ; [ "${BS2B:-no}" != "no" ]         && libbs2b="--enable-libbs2b"
rubberband="" ; [ "${RUBBERBAND:-no}" != "no" ]   && rubberband="--enable-librubberband"
tesseract=""  ; [ "${TESSERACT:-no}" != "no" ]    && tesseract="--enable-libtesseract"
libjack=""    ; [ "${JACK:-no}" != "no" ]         && libjack="--enable-libjack"
lv2=""        ; [ "${LV2:-no}" != "no" ]          && lv2="--enable-lv2"
libdav1d=""   ; [ "${DAV1D:-no}" != "no" ]        && libdav1d="--enable-libdav1d"
rabbitmq=""   ; [ "${RABBITMQ:-no}" != "no" ]     && rabbitmq="--enable-librabbitmq"
libcodec2=""  ; [ "${CODEC2:-no}" != "no" ]       && libcodec2="--enable-libcodec2"
libsoxr=""    ; [ "${SOXR:-no}" != "no" ]         && libsoxr="--enable-libsoxr"
libsrt=""     ; [ "${SRT:-no}" != "no" ]          && libsrt="--enable-libsrt"
libzimg=""    ; [ "${ZIMG:-no}" != "no" ]         && libzimg="--enable-libzimg"
chromaprint=""  ; [ "${CHROMAPRINT:-no}" != "no" ] && chromaprint="--enable-chromaprint"
vapoursynth=""  ; [ "${VAPOURSYNTH:-no}" != "no" ] && vapoursynth="--enable-vapoursynth"
opencore_amr="" ; [ "${OPENCORE:-no}" != "no" ] && \
  opencore_amr="--enable-libopencore-amrnb --enable-libopencore-amrwb"
fdk=""          ; [ "${FDK_AAC:-no}" != "no" ]  && \
  { fdk="--enable-libfdk-aac"; non_free="--enable-nonfree" ; }
decklink=""   ; [ "${DECKLINK:-no}" != "no" ]   && \
  { decklink="--enable-decklink" ; \
    SLKCFLAGS="$SLKCFLAGS -I/usr/include/decklink" ; }
libaribb24="" ; [ "${ARIBB24:-no}" != "no" ]     && libaribb24="--enable-libaribb24"
libjxl=""     ; [ "${JXL:-no}" != "no" ]         && libjxl="--enable-libjxl"
librist=""    ; [ "${RIST:-no}" != "no" ]        && librist="--enable-librist"
libshine=""   ; [ "${SHINE:-no}" != "no" ]       && libshine="--enable-libshine"
svtav1=""     ; [ "${SVTAV1:-no}" != "no" ]      && svtav1="--enable-libsvtav1"
libmysofa=""  ; [ "${MYSOFA:-no}" != "no" ]      && libmysofa="--enable-libmysofa"
libxavs2=""   ; [ "${XAVS2:-no}" != "no" ]       && libxavs2="--enable-libxavs2"
libvmaf=""    ; [ "${VMAF:-no}" != "no" ]         && libvmaf="--enable-libvmaf"

# Needs older opencv than we ship. See https://trac.ffmpeg.org/ticket/7059
libopencv=""  ; [ "${OPENCV:-no}" != "no" ]       && libopencv="--enable-libopencv"

# Needs newer lensfun than we ship. See https://trac.ffmpeg.org/ticket/9112
liblensfun="" ; [ "${LENSFUN:-no}" != "no" ]     && liblensfun="--enable-liblensfun"

# Default enabled features:
fontconfig="" ; [ "${FONTCONFIG:-yes}" != "no" ]  && fontconfig="--enable-libfontconfig"
freetype=""   ; [ "${FREETYPE:-yes}" != "no" ]    && freetype="--enable-libfreetype"
fribidi=""    ; [ "${FRIBIDI:-yes}" != "no" ]     && fribidi="--enable-libfribidi"
libaom=""     ; [ "${AOM:-yes}" != "no" ]          && libaom="--enable-libaom"
libbluray=""  ; [ "${BLURAY:-yes}" != "no" ]      && libbluray="--enable-libbluray"
libcaca=""    ; [ "${CACA:-yes}" != "no" ]        && libcaca="--enable-libcaca"
libcdio=""    ; [ "${LIBCDIO:-yes}" != "no" ]     && libcdio="--enable-libcdio"
libdav1d=""   ; [ "${DAV1D:-yes}" != "no" ]        && libdav1d="--enable-libdav1d"
libssh=""     ; [ "${LIBSSH:-yes}" != "no" ]      && libssh="--enable-libssh"
libtheora=""  ; [ "${THEORA:-yes}" != "no" ]      && libtheora="--enable-libtheora"
libv4l2=""    ; [ "${V4L2:-yes}" != "no" ]        && libv4l2="--enable-libv4l2"
libvorbis=""  ; [ "${VORBIS:-yes}" != "no" ]      && libvorbis="--enable-libvorbis"
libvpx=""     ; [ "${VPX:-yes}" != "no" ]         && libvpx="--enable-libvpx"
libwebp=""    ; [ "${WEBP:-yes}" != "no" ]        && libwebp="--enable-libwebp"
mp3lame=""    ; [ "${LAME:-yes}" != "no" ]        && mp3lame="--enable-libmp3lame"
opencl=""     ; [ "${OPENCL:-yes}" != "no" ]      && opencl="--enable-opencl"
opengl=""     ; [ "${OPENGL:-yes}" != "no" ]      && opengl="--enable-opengl"
openjpeg=""   ; [ "${JP2:-yes}" != "no" ]         && openjpeg="--enable-libopenjpeg"
pulse=""      ; [ "${PULSEAUDIO:-yes}" != "no" ]  && pulse="--enable-libpulse"
samba=""      ; [ "${SAMBA:-yes}" != "no" ]       && samba="--enable-libsmbclient"
libfrei0r=""  ; [ "${FREI0R:-yes}" != "no" ]      && libfrei0r="--enable-frei0r"
libspeex=""   ; [ "${SPEEX:-yes}" != "no" ]       && libspeex="--enable-libspeex"
libopenal=""  ; [ "${OPENAL:-yes}" != "no" ]      && libopenal="--enable-openal"
libopus=""    ; [ "${OPUS:-yes}" != "no" ]        && libopus="--enable-libopus"
libvidstab="" ; [ "${VIDSTAB:-yes}" != "no" ]     && libvidstab="--enable-libvidstab"
libxml2=""    ; [ "${LIBXML2:-yes}" != "no" ]     && libxml2="--enable-libxml2"
librsvg=""    ; [ "${LIBRSVG:-yes}" != "no" ]     && librsvg="--enable-librsvg"
libdrm=""     ; [ "${LIBDRM:-yes}" != "no" ]      && libdrm="--enable-libdrm"
vulkan=""     ; [ "${VULKAN:-yes}" != "no" ]      && vulkan="--enable-vulkan"
libass=""     ; [ "${ASS:-yes}" != "no" ]         && libass="--enable-libass"
libplacebo="" ; [ "${PLACEBO:-yes}" != "no" ]     && libplacebo="--enable-libplacebo"
lcms2=""      ; [ "${LCMS2:-yes}" != "no" ]       && lcms2="--enable-lcms2"

# No default patent encumbered features:
aac=""        ; [ "${AAC:-no}" = "no" ]           && aac="--disable-encoder=aac"

# Extract source:
tar xf $CWD/$PKGNAM-$VERSION.tar.!(*sign|*asc|*sig)
cd $PKGNAM-*/ || failextract
slackhousekeeping

# Apply patches:
# Restore missing function needed by Chromium and qt-webengine:
zcat $CWD/add-av_stream_get_first_dts-for-chromium.patch.gz | patch -p1 --verbose || exit 1

# GCC 14 "fix":
SLKCFLAGS="$SLKCFLAGS -Wno-error=int-conversion -Wno-error=incompatible-pointer-types"

# Configure:
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
   --prefix=/usr \
   --libdir=/usr/lib${LIBDIRSUFFIX} \
   --shlibdir=/usr/lib${LIBDIRSUFFIX} \
   --docdir=/usr/doc/$PKGNAM-$VERSION/html \
   --mandir=/usr/man \
   --disable-debug \
   --enable-shared \
   --disable-static \
   --enable-gpl \
   --enable-version3 \
   --arch=$ARCH \
   $non_free \
   $aac \
   $chromaprint \
   $decklink \
   $fdk \
   $fontconfig \
   $freetype \
   $fribidi \
   $gnutls \
   $ladspa \
   $libass \
   $libbluray \
   $libbs2b \
   $libcaca \
   $libcdio \
   $libcelt \
   $libdc1394 \
   $libflite \
   $libfrei0r \
   $libgme \
   $libgsm \
   $libiec61883 \
   $libilbc \
   $libmodplug \
   $libopenal \
   $libopencv \
   $libopus \
   $librtmp \
   $libsnappy \
   $libspeex \
   $libssh \
   $libtheora \
   $libtwolame \
   $libv4l2 \
   $libvidstab \
   $libvorbis \
   $libvpx \
   $libwebp \
   $libx264 \
   $libx265 \
   $libxvid \
   $libzmq \
   $libzvbi \
   $mp3lame \
   $opencl \
   $opencore_amr \
   $opengl \
   $openjpeg \
   $pulse \
   $rubberband \
   $samba \
   $ssl \
   $tesseract \
   $liblensfun \
   $libxml2 \
   $librsvg \
   $vulkan \
   $libjack \
   $libglslang \
   $libdrm \
   $libaom \
   $lv2 \
   $libdav1d \
   $rabbitmq \
   $libcodec2 \
   $libsoxr \
   $libsrt \
   $libzimg \
   $vapoursynth \
   $libshaderc \
   $libgcrypt \
   $libplacebo \
   $lcms2 \
   $gmp \
   $libaribb24 \
   $libjxl \
   $librist \
   $libshine \
   $svtav1 \
   $libmysofa \
   $libxavs2 \
   $libvmaf || failconfig

# Build:
make $NUMJOBS || make || failmake

# Install into package framework:
make install DESTDIR=$PKG || failinstall
make install-man DESTDIR=$PKG || failinstall

# Add documentation:
mkdir -vpm755 $PKG/usr/doc/$PKGNAM-$VERSION
cp -fav \
  Changelog COPYING* CREDITS INSTALL* LICENSE* MAINTAINERS README* \
  RELEASE VERSION \
  $PKG/usr/doc/$PKGNAM-$VERSION
cp -a doc/*.txt $PKG/usr/doc/$PKGNAM-$VERSION/txt/
find . -name "RELEASE_NOTES" -exec cp -a {} $PKG/usr/doc/$PKGNAM-$VERSION/ \;
changelogliposuction ChangeLog $PKGNAM $VERSION # Trim down a "ChangeLog" file

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall   # strip all .a archives and all ELFs
slack_delete_lafiles # delete usr/lib{,64}/*.la
slackgzpages -i # compress man & info pages and delete usr/info/dir
slackslack      # set standard Slackware file/dir permissions and ownerships
slackdesc       # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links