Add ffmpeg build for android

support/android/ffmpeg.makefile

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+.PHONY: all
+all: ffmpeg
+	@:  # No-op to silence the "make: Nothing to be done for 'all'." message.
+
+.PHONY: ffmpeg
+ffmpeg: ffmpeg-libs
+
+ffmpeg-libs: ffmpeg-libs/Configure
+	./ffmpeg.sh ${ANDROID_NDK}
+
+ffmpeg-libs/Configure:
+	wget https://www.guillaume-gomez.fr/ffmpeg-android.tar.gz
+	tar -zxf ffmpeg-android.tar.gz

support/android/ffmpeg.sh

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+#!/bin/bash
+# Wrote by Guillaume Gomez <guillaume1.gomez@gmail.com> for ffmpeg
+# build for android build server
+
+#####################################################################
+
+# Set ANDROID_NDK_ROOT to you NDK location. For example,
+# /opt/android-ndk-r8e or /opt/android-ndk-r9. This can be done in a
+# login script. If ANDROID_NDK_ROOT is not specified, the script will
+# try to pick it up with the value of _ANDROID_NDK_ROOT below. If
+# ANDROID_NDK_ROOT is set, then the value is ignored.
+# _ANDROID_NDK="android-ndk-r8e"
+_ANDROID_NDK="android-ndk-r9"
+# _ANDROID_NDK="android-ndk-r10"
+
+# Set _ANDROID_EABI to the EABI you want to use. You can find the
+# list in $ANDROID_NDK_ROOT/toolchains. This value is always used.
+# _ANDROID_EABI="x86-4.6"
+# _ANDROID_EABI="arm-linux-androideabi-4.6"
+_ANDROID_EABI="arm-linux-androideabi-4.8"
+
+# Set _ANDROID_ARCH to the architecture you are building for.
+# This value is always used.
+# _ANDROID_ARCH=arch-x86
+_ANDROID_ARCH=arch-arm
+
+# Set _ANDROID_API to the API you want to use. You should set it
+# to one of: android-14, android-9, android-8, android-14, android-5
+# android-4, or android-3. You can't set it to the latest (for
+# example, API-17) because the NDK does not supply the platform. At
+# Android 5.0, there will likely be another platform added (android-22?).
+# This value is always used.
+# _ANDROID_API="android-14"
+_ANDROID_API="$ANDROID_PLATFORM"
+# _ANDROID_API="android-19"
+
+#####################################################################
+
+# If the user did not specify the NDK location, try and pick it up.
+# We expect something like ANDROID_NDK_ROOT=/opt/android-ndk-r8e
+# or ANDROID_NDK_ROOT=/usr/local/android-ndk-r8e.
+export ANDROID_NDK_ROOT=$1
+echo $ANDROID_NDK_ROOT
+# Error checking
+# ANDROID_NDK_ROOT should always be set by the user (even when not running this script)
+# http://groups.google.com/group/android-ndk/browse_thread/thread/a998e139aca71d77
+if [ -z "$ANDROID_NDK_ROOT" ] || [ ! -d "$ANDROID_NDK_ROOT" ]; then
+  echo "Error: ANDROID_NDK_ROOT is not a valid path. Please edit this script."
+  # echo "$ANDROID_NDK_ROOT"
+  # exit 1
+fi
+
+# Error checking
+if [ ! -d "$ANDROID_NDK_ROOT/toolchains" ]; then
+  echo "Error: ANDROID_NDK_ROOT/toolchains is not a valid path. Please edit this script."
+  # echo "$ANDROID_NDK_ROOT/toolchains"
+  # exit 1
+fi
+
+# Error checking
+if [ ! -d "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI" ]; then
+  echo "Error: ANDROID_EABI is not a valid path. Please edit this script."
+  # echo "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI"
+  # exit 1
+fi
+
+#####################################################################
+
+# Based on ANDROID_NDK_ROOT, try and pick up the required toolchain. We expect something like:
+# /opt/android-ndk-r83/toolchains/arm-linux-androideabi-4.7/prebuilt/linux-x86_64/bin
+# Once we locate the toolchain, we add it to the PATH. Note: this is the 'hard way' of
+# doing things according to the NDK documentation for Ice Cream Sandwich.
+# https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html
+
+ANDROID_TOOLCHAIN=""
+for host in "linux-x86_64" "linux-x86" "darwin-x86_64" "darwin-x86"
+do
+  if [ -d "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/bin" ]; then
+    ANDROID_TOOLCHAIN="$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/bin"
+    break
+  fi
+done
+
+# Error checking
+if [ -z "$ANDROID_TOOLCHAIN" ] || [ ! -d "$ANDROID_TOOLCHAIN" ]; then
+  echo "Error: ANDROID_TOOLCHAIN is not valid. Please edit this script."
+  # echo "$ANDROID_TOOLCHAIN"
+  # exit 1
+fi
+
+case $_ANDROID_ARCH in
+    arch-arm)
+      ANDROID_TOOLS="arm-linux-androideabi-gcc arm-linux-androideabi-ranlib arm-linux-androideabi-ld"
+      ;;
+    arch-x86)
+      ANDROID_TOOLS="i686-linux-android-gcc i686-linux-android-ranlib i686-linux-android-ld"
+      ;;
+    *)
+      echo "ERROR ERROR ERROR"
+      ;;
+esac
+
+for tool in $ANDROID_TOOLS
+do
+  # Error checking
+  if [ ! -e "$ANDROID_TOOLCHAIN/$tool" ]; then
+    echo "Error: Failed to find $tool. Please edit this script."
+    # echo "$ANDROID_TOOLCHAIN/$tool"
+    # exit 1
+  fi
+done
+
+# Only modify/export PATH if ANDROID_TOOLCHAIN good
+if [ ! -z "$ANDROID_TOOLCHAIN" ]; then
+  export ANDROID_TOOLCHAIN="$ANDROID_TOOLCHAIN"
+  export PATH="$ANDROID_TOOLCHAIN":"$PATH"
+fi
+
+#####################################################################
+
+# For the Android SYSROOT. Can be used on the command line with --sysroot
+# https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html
+export ANDROID_SYSROOT="$ANDROID_NDK_ROOT/platforms/$_ANDROID_API/$_ANDROID_ARCH"
+export SYSROOT="$ANDROID_SYSROOT"
+export NDK_SYSROOT="$ANDROID_SYSROOT"
+
+# Error checking
+if [ -z "$ANDROID_SYSROOT" ] || [ ! -d "$ANDROID_SYSROOT" ]; then
+  echo "Error: ANDROID_SYSROOT is not valid. Please edit this script."
+  # echo "$ANDROID_SYSROOT"
+  # exit 1
+fi
+
+#####################################################################
+
+#####################################################################
+
+# Most of these should be OK (MACHINE, SYSTEM, ARCH). RELEASE is ignored.
+export MACHINE=armv7
+export RELEASE=2.6.37
+export SYSTEM=android
+export ARCH=arm
+export CROSS_COMPILE="arm-linux-androideabi-"
+
+if [ "$_ANDROID_ARCH" == "arch-x86" ]; then
+    export MACHINE=i686
+    export RELEASE=2.6.37
+    export SYSTEM=android
+    export ARCH=x86
+    export CROSS_COMPILE="i686-linux-android-"
+fi
+
+# For the Android toolchain
+# https://android.googlesource.com/platform/ndk/+/ics-mr0/docs/STANDALONE-TOOLCHAIN.html
+export ANDROID_SYSROOT="$ANDROID_NDK_ROOT/platforms/$_ANDROID_API/$_ANDROID_ARCH"
+export SYSROOT="$ANDROID_SYSROOT"
+export NDK_SYSROOT="$ANDROID_SYSROOT"
+export ANDROID_NDK_SYSROOT="$ANDROID_SYSROOT"
+export ANDROID_API="$_ANDROID_API"
+
+export HOSTCC=gcc
+
+VERBOSE=1
+if [ ! -z "$VERBOSE" ] && [ "$VERBOSE" != "0" ]; then
+  echo "ANDROID_NDK_ROOT: $ANDROID_NDK_ROOT"
+  echo "ANDROID_ARCH: $_ANDROID_ARCH"
+  echo "ANDROID_EABI: $_ANDROID_EABI"
+  echo "ANDROID_API: $ANDROID_API"
+  echo "ANDROID_SYSROOT: $ANDROID_SYSROOT"
+  echo "ANDROID_TOOLCHAIN: $ANDROID_TOOLCHAIN"
+  echo "FIPS_SIG: $FIPS_SIG"
+  echo "CROSS_COMPILE: $CROSS_COMPILE"
+  echo "ANDROID_DEV: $ANDROID_DEV"
+fi
+
+cd ffmpeg-HEAD-aa86ccc.android
+make distclean
+./configure --enable-shared --disable-static --disable-programs
+make 2>&1
+# We give access to header files.
+ln -s `pwd`/libavcodec/ "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/include/"
+ln -s `pwd`/libavformat/ "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/include/"
+ln -s `pwd`/libavutil/ "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/include/"
+# We give access to dynamic libraries.
+ln -s `pwd`/libavcodec/libavcodec.so "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/"
+ln -s `pwd`/libavcodec/libavutil.so "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/"
+ln -s `pwd`/libavcodec/libavformat.so "$ANDROID_NDK_ROOT/toolchains/$_ANDROID_EABI/prebuilt/$host/"