# syntax=docker/dockerfile-upstream:master-labs

# Base emsdk image with environment variables.
FROM emscripten/emsdk:3.1.40 AS emsdk-base
ARG EXTRA_CFLAGS
ARG EXTRA_LDFLAGS
ARG FFMPEG_ST
ARG FFMPEG_MT
ENV INSTALL_DIR=/opt
# We cannot upgrade to n6.0 as ffmpeg bin only supports multithread at the moment.
ENV FFMPEG_VERSION=n5.1.3
ENV CFLAGS="-I$INSTALL_DIR/include $CFLAGS $EXTRA_CFLAGS"
ENV CXXFLAGS="$CFLAGS"
ENV LDFLAGS="-L$INSTALL_DIR/lib $LDFLAGS $CFLAGS $EXTRA_LDFLAGS"
ENV EM_PKG_CONFIG_PATH=$EM_PKG_CONFIG_PATH:$INSTALL_DIR/lib/pkgconfig:/emsdk/upstream/emscripten/system/lib/pkgconfig
ENV EM_TOOLCHAIN_FILE=$EMSDK/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake
ENV PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$EM_PKG_CONFIG_PATH
ENV FFMPEG_ST=$FFMPEG_ST
ENV FFMPEG_MT=$FFMPEG_MT
RUN apt-get update && \
      apt-get install -y pkg-config autoconf automake libtool ragel

# Build zimg
FROM emsdk-base AS zimg-builder
ENV ZIMG_BRANCH=release-3.0.5
RUN apt-get update && apt-get install -y git
RUN git clone --recursive -b $ZIMG_BRANCH https://github.com/sekrit-twc/zimg.git /src
COPY build/zimg.sh /src/build.sh
RUN bash -x /src/build.sh

# Build x264
FROM emsdk-base AS x264-builder
ENV X264_BRANCH=4-cores
ADD https://github.com/ffmpegwasm/x264.git#$X264_BRANCH /src
COPY build/x264.sh /src/build.sh
RUN bash -x /src/build.sh

# Build x265
FROM emsdk-base AS x265-builder
ENV X265_BRANCH=3.4
ADD https://github.com/ffmpegwasm/x265.git#$X265_BRANCH /src
COPY build/x265.sh /src/build.sh
RUN bash -x /src/build.sh

# Build libvpx
FROM emsdk-base AS libvpx-builder
ENV LIBVPX_BRANCH=v1.9.0
ADD https://github.com/ffmpegwasm/libvpx.git#$LIBVPX_BRANCH /src
COPY build/libvpx.sh /src/build.sh
RUN bash -x /src/build.sh

# Build lame
FROM emsdk-base AS lame-builder
ENV LAME_BRANCH=master
ADD https://github.com/ffmpegwasm/lame.git#$LAME_BRANCH /src
COPY build/lame.sh /src/build.sh
RUN bash -x /src/build.sh

# Build ogg
FROM emsdk-base AS ogg-builder
ENV OGG_BRANCH=v1.3.4
ADD https://github.com/ffmpegwasm/Ogg.git#$OGG_BRANCH /src
COPY build/ogg.sh /src/build.sh
RUN bash -x /src/build.sh

# Build theora
FROM emsdk-base AS theora-builder
COPY --from=ogg-builder $INSTALL_DIR $INSTALL_DIR
ENV THEORA_BRANCH=v1.1.1
ADD https://github.com/ffmpegwasm/theora.git#$THEORA_BRANCH /src
COPY build/theora.sh /src/build.sh
RUN bash -x /src/build.sh

# Build opus
FROM emsdk-base AS opus-builder
ENV OPUS_BRANCH=v1.3.1
ADD https://github.com/ffmpegwasm/opus.git#$OPUS_BRANCH /src
COPY build/opus.sh /src/build.sh
RUN bash -x /src/build.sh

# Build vorbis
FROM emsdk-base AS vorbis-builder
COPY --from=ogg-builder $INSTALL_DIR $INSTALL_DIR
ENV VORBIS_BRANCH=v1.3.3
ADD https://github.com/ffmpegwasm/vorbis.git#$VORBIS_BRANCH /src
COPY build/vorbis.sh /src/build.sh
RUN bash -x /src/build.sh

# Build zlib
FROM emsdk-base AS zlib-builder
ENV ZLIB_BRANCH=v1.2.11
ADD https://github.com/ffmpegwasm/zlib.git#$ZLIB_BRANCH /src
COPY build/zlib.sh /src/build.sh
RUN bash -x /src/build.sh

# Build libwebp
FROM emsdk-base AS libwebp-builder
COPY --from=zlib-builder $INSTALL_DIR $INSTALL_DIR
ENV LIBWEBP_BRANCH=v1.1.0
ADD https://github.com/ffmpegwasm/libwebp.git#$LIBWEBP_BRANCH /src
COPY build/libwebp.sh /src/build.sh
RUN bash -x /src/build.sh

# Build freetype2
FROM emsdk-base AS freetype2-builder
ENV FREETYPE2_BRANCH=VER-2-10-4
ADD https://github.com/ffmpegwasm/freetype2.git#$FREETYPE2_BRANCH /src
COPY build/freetype2.sh /src/build.sh
RUN bash -x /src/build.sh

# Build fribidi
FROM emsdk-base AS fribidi-builder
ENV FRIBIDI_BRANCH=v1.0.9
ADD https://github.com/fribidi/fribidi.git#$FRIBIDI_BRANCH /src
COPY build/fribidi.sh /src/build.sh
RUN bash -x /src/build.sh

# Build harfbuzz
FROM emsdk-base AS harfbuzz-builder
ENV HARFBUZZ_BRANCH=5.2.0
ADD https://github.com/harfbuzz/harfbuzz.git#$HARFBUZZ_BRANCH /src
COPY build/harfbuzz.sh /src/build.sh
RUN bash -x /src/build.sh

# Build libass
FROM emsdk-base AS libass-builder
COPY --from=freetype2-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=fribidi-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=harfbuzz-builder $INSTALL_DIR $INSTALL_DIR
ENV LIBASS_BRANCH=0.15.0
ADD https://github.com/libass/libass.git#$LIBASS_BRANCH /src
COPY build/libass.sh /src/build.sh
RUN bash -x /src/build.sh

# Base ffmpeg image with dependencies and source code populated.
FROM emsdk-base AS ffmpeg-base
RUN embuilder build sdl2 sdl2-mt
ADD https://github.com/FFmpeg/FFmpeg.git#$FFMPEG_VERSION /src
COPY --from=x264-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=x265-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=libvpx-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=lame-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=opus-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=theora-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=vorbis-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=libwebp-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=libass-builder $INSTALL_DIR $INSTALL_DIR
COPY --from=zimg-builder $INSTALL_DIR $INSTALL_DIR

# Build ffmpeg with --enable-libzimg
FROM ffmpeg-base AS ffmpeg-builder
COPY build/ffmpeg.sh /src/build.sh
RUN bash -x /src/build.sh \
      --enable-gpl \
      --enable-libx264 \
      --enable-libx265 \
      --enable-libvpx \
      --enable-libmp3lame \
      --enable-libtheora \
      --enable-libvorbis \
      --enable-libopus \
      --enable-zlib \
      --enable-libwebp \
      --enable-libfreetype \
      --enable-libfribidi \
      --enable-libass \
      --enable-libzimg 

# Build ffmpeg.wasm
FROM ffmpeg-builder AS ffmpeg-wasm-builder
COPY src/bind /src/src/bind
COPY src/fftools /src/src/fftools
COPY build/ffmpeg-wasm.sh build.sh
# libraries to link
ENV FFMPEG_LIBS \
      -lx264 \
      -lx265 \
      -lvpx \
      -lmp3lame \
      -logg \
      -ltheora \
      -lvorbis \
      -lvorbisenc \
      -lvorbisfile \
      -lopus \
      -lz \
      -lwebp \
      -lfreetype \
      -lfribidi \
      -lharfbuzz \
      -lass \
      -lzimg
RUN mkdir -p /src/dist/umd && bash -x /src/build.sh \
      ${FFMPEG_LIBS} \
      -o dist/umd/ffmpeg-core.js
RUN mkdir -p /src/dist/esm && bash -x /src/build.sh \
      ${FFMPEG_LIBS} \
      -sEXPORT_ES6 \
      -o dist/esm/ffmpeg-core.js

# Export ffmpeg-core.wasm to dist/, use `docker buildx build -o . .` to get assets
FROM scratch AS exportor
COPY --from=ffmpeg-wasm-builder /src/dist /dist