FFmpeg to WASM build setup + Vue app.

Dockerfile

@@ -0,0 +1,77 @@
+FROM emscripten/emsdk as build
+
+ARG FFMPEG_VERSION=4.3.1
+ARG X264_VERSION=master
+
+ARG PREFIX=/opt/ffmpeg
+ARG MAKEFLAGS="-j4"
+
+RUN apt-get update && apt-get install -y autoconf libtool build-essential
+
+# libx264
+RUN cd /tmp/ && \
+  wget https://code.videolan.org/videolan/x264/-/archive/master/x264-master.tar.gz && \
+  tar zxf x264-${X264_VERSION}.tar.gz
+
+RUN cd /tmp/x264-${X264_VERSION} && \
+  emconfigure ./configure \
+  --prefix=${PREFIX} \
+  --host=i686-gnu \
+  --enable-static \
+  --disable-cli \
+  --disable-asm \
+  --extra-cflags="-s USE_PTHREADS=1"
+
+RUN cd /tmp/x264-${X264_VERSION} && \
+  emmake make install-lib-static -j4
+
+# Get ffmpeg source.
+RUN cd /tmp/ && \
+  wget http://ffmpeg.org/releases/ffmpeg-${FFMPEG_VERSION}.tar.gz && \
+  tar zxf ffmpeg-${FFMPEG_VERSION}.tar.gz && rm ffmpeg-${FFMPEG_VERSION}.tar.gz
+
+ARG CFLAGS="-s USE_PTHREADS -O3 -I${PREFIX}/include"
+ARG LDFLAGS="$CFLAGS -L${PREFIX}/lib -s INITIAL_MEMORY=33554432"
+
+# Compile ffmpeg.
+RUN cd /tmp/ffmpeg-${FFMPEG_VERSION} && \
+  emconfigure ./configure \
+  --prefix=${PREFIX} \
+  --target-os=none \
+  --arch=x86_32 \
+  --enable-cross-compile \
+  --disable-x86asm \
+  --disable-inline-asm \
+  --disable-stripping \
+  --disable-programs \
+  --disable-doc \
+  --enable-gpl \
+  --enable-libx264 \
+  --extra-cflags="$CFLAGS" \
+  --extra-cxxflags="$CFLAGS" \
+  --extra-ldflags="$LDFLAGS" \
+  --nm="llvm-nm -g" \
+  --ar=emar \
+  --as=llvm-as \
+  --ranlib=llvm-ranlib \
+  --cc=emcc \
+  --cxx=em++ \
+  --objcc=emcc \
+  --dep-cc=emcc
+
+RUN cd /tmp/ffmpeg-${FFMPEG_VERSION} && \
+  emmake make -j4 && \
+  emmake make install
+
+# RUN	cd /build && \
+#   emcc -L/opt/ffmpeg/lib -I/opt/ffmpeg/include/ src/main.c \
+# 	-s EXPORTED_FUNCTIONS='["_version", "_openfile"]' \
+# 	-s EXTRA_EXPORTED_RUNTIME_METHODS="[FS, cwrap, ccall, setValue, writeAsciiToMemory]" \
+# 	-s INITIAL_MEMORY=268435456 \
+# 	-lavcodec -lavformat -lavfilter -lavdevice -lswresample -lswscale -lavutil -lm -lx264 -pthread \
+# 	-o ffmpeg-webtools.js
+
+WORKDIR /build
+COPY ./src/main.c /build/src/main.c
+COPY ./Makefile /build/Makefile
+# RUN make