ffmpeg-android-maker/scripts/parse-arguments.sh

# This script parses arguments that were passed to ffmpeg-android-maker.sh
# and exports a bunch of varables that are used elsewhere.

# Local variables with default values. Can be overridden with specific arguments
# See the end of this file for more description
EXTERNAL_LIBRARIES=()
SOURCE_TYPE=TAR
SOURCE_VALUE="4.2.1"
API_LEVEL=16

for artument in "$@"
do
  case $artument in
    # Use this value as Android platform version during compilation.
    --android-api-level=*)
      API_LEVEL="${artument#*=}"
      shift
    ;;
    # Checkout the particular tag in the FFmpeg's git repository
    --source-git-tag=*)
      SOURCE_TYPE=GIT_TAG
      SOURCE_VALUE="${artument#*=}"
      shift
    ;;
    # Checkout the particular branch in the FFmpeg's git repository
    --source-git-branch=*)
      SOURCE_TYPE=GIT_BRANCH
      SOURCE_VALUE="${artument#*=}"
      shift
    ;;
    # Download the particular tar archive by its version
    --source-tar=*)
      SOURCE_TYPE=TAR
      SOURCE_VALUE="${artument#*=}"
      shift
    ;;
    # Arguments below enable certain external libraries to build into FFmpeg
    --enable-libaom)
      EXTERNAL_LIBRARIES+=( "libaom" )
      shift
    ;;
    --enable-libdav1d)
      EXTERNAL_LIBRARIES+=( "libdav1d" )
      shift
    ;;
    --enable-libmp3lame)
      EXTERNAL_LIBRARIES+=( "libmp3lame" )
      shift
    ;;
    *)
      echo "Unknown argument $artument"
    ;;
  esac
done

# Saving the information FFmpeg's source code downloading
export FFMPEG_SOURCE_TYPE=$SOURCE_TYPE
export FFMPEG_SOURCE_VALUE=$SOURCE_VALUE

# A list of external libraries to build into the FFMpeg
# Elements from this list are used for strings substitution
export FFMPEG_EXTERNAL_LIBRARIES=${EXTERNAL_LIBRARIES[@]}

# Desired Android API level to use during compilation
# Will be replaced with 21 for 64bit ABIs if the value is less than 21
export DESIRED_ANDROID_API_LEVEL=${API_LEVEL}

# Essential directories

# The root of the project
export BASE_DIR="$( cd "$( dirname "$0" )" && pwd )"
# Directory that contains source code for FFmpeg and its dependencies
# Each library has its own subdirectory
# Multiple versions of the same library can be stored inside librarie's directory
export SOURCES_DIR=${BASE_DIR}/sources
# Directory to place some statistics about the build.
# Currently - the info about Text Relocations
export STATS_DIR=${BASE_DIR}/stats
# Directory that contains helper scripts and
# scripts to download and build FFmpeg and each dependency separated by subdirectories
export SCRIPTS_DIR=${BASE_DIR}/scripts
# The directory to use by Android project
# All FFmpeg's libraries and headers are copied there
export OUTPUT_DIR=${BASE_DIR}/output

# Directory to use as a place to build/install FFmpeg and its dependencies
BUILD_DIR=${BASE_DIR}/build
# Separate directory to build FFmpeg to
export BUILD_DIR_FFMPEG=$BUILD_DIR/ffmpeg
# All external libraries are installed to a single root
# to make easier referencing them when FFmpeg is being built.
export BUILD_DIR_EXTERNAL=$BUILD_DIR/external