build.sh

CC=emcc
CCFLAGS="-O3 -ffast-math -Iinclude"

TARGET_DIR=dist
TARGET_DIR_JS=$TARGET_DIR/js
TARGET_DIR_TS=$TARGET_DIR/ts

LIBOGG_SRCDIR=libogg/src
LIBOGG_INCLUDES="-I$LIBOGG_SRCDIR -Ilibogg/include"
LIBOGG_SRCS="bitwise.c framing.c"
LIBOGG_OUTDIR=build/libogg

LIBVORBIS_SRCDIR=libvorbis/lib
LIBVORBIS_INCLUDES="$LIBOGG_INCLUDES -I$LIBVORBIS_SRCDIR -Ilibvorbis/include"
LIBVORBIS_SRCS="analysis.c bitrate.c block.c codebook.c envelope.c floor0.c floor1.c info.c lookup.c lpc.c lsp.c mapping0.c mdct.c psy.c registry.c res0.c sharedbook.c smallft.c synthesis.c vorbisenc.c window.c"
LIBVORBIS_OUTDIR=build/libvorbis

WRAPPER_SRCDIR=src/native
WRAPPER_INCLUDES="$LIBVORBIS_INCLUDES"
WRAPPER_SRCS="ogg_vbr_encoder.c"
WRAPPER_OUTDIR=build/wrapper

LIBRARY_SRCDIR=src
LIBRARY_OUTDIR=build/lib

COMPILE_PREJS=src/libvorbis.asmjs.pre
COMPILE_POSTJS=src/libvorbis.asmjs.post
COMPILE_TARGET=libvorbis.asmjs.js
COMPILE_TARGET_OPT=libvorbis.asmjs.min.js
COMPILE_OUTDIR=$TARGET_DIR_JS
COMPILE_FLAGS="-s ALLOW_MEMORY_GROWTH=0 -s ASM_JS=1 -s EXPORTED_FUNCTIONS=@exported_functions.json"
COMPILE_FLAGS="$COMPILE_FLAGS --pre-js $COMPILE_PREJS --post-js $COMPILE_POSTJS"
COMPILE_FLAGS_OPT="-O3 $COMPILE_FLAGS"
COMPILE_FLAGS="-O1 $COMPILE_FLAGS"

build_module() {
  set -e
  
  ### libogg
  
  echo ":: Compiling libogg..."
  
  mkdir -p $LIBOGG_OUTDIR
  
  for srcfile in $LIBOGG_SRCS; do
    buildcmd="$CC $CCFLAGS $LIBOGG_INCLUDES $LIBOGG_SRCDIR/$srcfile -o $LIBOGG_OUTDIR/${srcfile%.*}.bc"
    echo $buildcmd
    $buildcmd
  done
  
  ### libvorbis
  
  echo ":: Compiling libvorbis..."
  
  mkdir -p $LIBVORBIS_OUTDIR
  
  for srcfile in $LIBVORBIS_SRCS; do
    buildcmd="$CC $CCFLAGS $LIBVORBIS_INCLUDES $LIBVORBIS_SRCDIR/$srcfile -o $LIBVORBIS_OUTDIR/${srcfile%.*}.bc"
    echo $buildcmd
    $buildcmd
  done
  
  ### wrapper
  
  echo ":: Compiling native helpers..."
  
  mkdir -p $WRAPPER_OUTDIR
  
  for srcfile in $WRAPPER_SRCS; do
    buildcmd="$CC $CCFLAGS $WRAPPER_INCLUDES $WRAPPER_SRCDIR/$srcfile -o $WRAPPER_OUTDIR/${srcfile%.*}.bc"
    echo $buildcmd
    $buildcmd
  done
  
  ### compile
  
  LIBOGG_BCS=$LIBOGG_OUTDIR/*.bc
  LIBVORBIS_BCS=$LIBVORBIS_OUTDIR/*.bc
  WRAPPER_BCS=$WRAPPER_OUTDIR/*.bc
  
  mkdir -p $COMPILE_OUTDIR
  
  echo ":: Compiling native module..."
  
  buildcmd="$CC $COMPILE_FLAGS $LIBOGG_BCS $LIBVORBIS_BCS $WRAPPER_BCS -o $COMPILE_OUTDIR/$COMPILE_TARGET"
  echo $buildcmd
  $buildcmd
  
  echo ":: Compiling native module (minified)..."
  
  buildcmd="$CC $COMPILE_FLAGS_OPT $LIBOGG_BCS $LIBVORBIS_BCS $WRAPPER_BCS -o $COMPILE_OUTDIR/$COMPILE_TARGET_OPT"
  echo $buildcmd
  $buildcmd
}

build_library() {
  set -e
  
  echo ":: Building library files..."
  
  mkdir -p $LIBRARY_OUTDIR
  
  libbuild() {
    tsc --out $LIBRARY_OUTDIR/$2.js $LIBRARY_SRCDIR/$1.ts
    uglifyjs -o $LIBRARY_OUTDIR/$2.min.js $LIBRARY_OUTDIR/$2.js
  }
  
  libbuild OggVbrEncoder libvorbis.oggvbr.encoder
  libbuild OggVbrAsyncEncoder libvorbis.oggvbr.asyncencoder
  libbuild OggVbrAsyncEncoderWorker libvorbis.oggvbr.asyncencoder.worker
  
  mkdir -p $TARGET_DIR_JS
  mkdir -p $TARGET_DIR_TS
  
  cp $LIBRARY_OUTDIR/* $TARGET_DIR_JS
  
  find $LIBRARY_SRCDIR -name \*.ts -exec cp {} $TARGET_DIR_TS \;
  cp -r typings $TARGET_DIR
}

build_all() {
  build_module
  build_library
}

case $1 in
  ""|"all")
  build_all
  ;;
  "module")
  build_module
  ;;
  "library")
  build_library
  ;;
  *)
  echo "unknown option." > /dev/stderr
  exit 1
  ;;
esac