Add ffmpeg library.

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "external/skia"]
 	path = external/skia
 	url = https://skia.googlesource.com/skia.git
+[submodule "external/ffmpeg"]
+	path = external/ffmpeg
+	url = https://github.com/FFmpeg/FFmpeg.git

BUILDS/BUILD.ffmpeg

+
+cc_import(
+    name = "avcodec",
+    hdrs = glob(["include/**/*.h"]),
+    static_library = "lib/libavcodec.a",
+    visibility = ["//visibility:public"]
+)
+
+cc_import(
+    name = "avdevice",
+    hdrs = glob(["include/**/*.h"]),
+    static_library = "lib/libavdevice.a",
+    visibility = ["//visibility:public"]
+)
+
+cc_import(
+    name = "avfilter",
+    hdrs = glob(["include/**/*.h"]),
+    static_library = "lib/libavfilter.a",
+    visibility = ["//visibility:public"]
+)
+
+cc_import(
+    name = "avformat",
+    hdrs = glob(["include/**/*.h"]),
+    static_library = "lib/libavformat.a",
+    visibility = ["//visibility:public"]
+)
+
+cc_import(
+    name = "avutil",
+    hdrs = glob(["include/**/*.h"]),
+    static_library = "lib/libavutil.a",
+    visibility = ["//visibility:public"]
+)
+
+cc_import(
+    name = "swresample",
+    hdrs = glob(["include/**/*.h"]),
+    static_library = "lib/libswresample.a",
+    visibility = ["//visibility:public"]
+)
+
+cc_import(
+    name = "swscale",
+    hdrs = glob(["include/**/*.h"]),
+    static_library = "lib/libswscale.a",
+    visibility = ["//visibility:public"]
+)

BUILDS/BUILD.theft

@@ -2,6 +2,5 @@ cc_library(
     name = "theft",
     srcs = glob(["src/*.c"]),
     hdrs = glob(["inc/*.h", "src/*.h"]),
-    copts = ["-Iexternal/theft/inc", "-ltheft"],
     visibility = ["//visibility:public"],
 )

WORKSPACE.bazel

@@ -19,3 +19,10 @@ new_local_repository(
     path = "./external/build/skia",
     build_file = "BUILDS/BUILD.skia"
 )
+
+# FFmpeg
+new_local_repository(
+    name = "ffmpeg",
+    path = "./external/build/ffmpeg",
+    build_file = "BUILDS/BUILD.ffmpeg"
+)

ffmpeg @ 81ebf40e

+Subproject commit 81ebf40efa47b7d11be060c551411dd5efd11a05

prepare.sh

@@ -39,3 +39,20 @@ builds=$(find . | grep bazel | xargs)
 if [ ! -z "$builds" ]; then
    rm $builds
 fi
+
+# Build ffmpeg
+FFMPEG_BUILD_DIR=${EXTERNAL_BUILD_DIR}/ffmpeg
+FFMPEG_DIR=${EXTERNAL_DIR}/ffmpeg
+
+cd $FFMPEG_DIR
+./configure --disable-programs --enable-shared
+make -j install prefix=${FFMPEG_BUILD_DIR}/dist
+
+if [ ! -d "${FFMPEG_BUILD_DIR}" ]; then
+    mkdir ${FFMPEG_BUILD_DIR}
+else
+    rm -rf ${FFMPEG_BUILD_DIR}/*
+fi
+
+cp -r ${FFMPEG_DIR}/dist/include ${FFMPEG_BUILD_DIR}/
+cp -r ${FFMPEG_DIR}/dist/lib     ${FFMPEG_BUILD_DIR}/

src/BUILD.bazel

@@ -3,8 +3,21 @@ cc_library(
     name = "render",
     srcs = ["canvas.cc"],
     hdrs = ["canvas.h"],
-    deps = ["@skia//:skia_public"],
-    copts = ["-I./external/build/skia/", "-std=c++2a"],
+    deps = [
+        "@ffmpeg//:avformat",
+        "@skia//:skia_public",
+        "@ffmpeg//:avcodec",
+        "@ffmpeg//:avdevice",
+        "@ffmpeg//:avfilter",
+        "@ffmpeg//:avutil",
+        "@ffmpeg//:swresample",
+        "@ffmpeg//:swscale",
+    ],
+    copts = [
+        "-I./external/ffmpeg/include",
+        "-I./external/skia/include",
+        "-std=c++2a"
+    ],
     visibility = [
       "//app:__pkg__",
       "//tests:__pkg__"

src/canvas.cc

 #include <stdio.h>
-#include "include/core/SkCanvas.h"
+#include "core/SkCanvas.h"
+
+extern "C" {
+    #include "libavformat/avformat.h"
+}
+
 
 int say(void) {
     SkCanvas canvas = SkCanvas();
+    AVFormatContext *ctx = avformat_alloc_context();
     return 0;
 }

tests/BUILD.bazel

@@ -6,6 +6,7 @@ cc_test(
     srcs = ["check.cc"],
     args = ["/home"],
     copts = ["-I./src"],
+    linkopts = ["-lz", "-llzma"],
     deps = [
         "//src:render",
         "@theft//:theft",