devops: support ffmpeg MacOS arm64 builds (#11075)

Drive-by's:
- support ffmpeg build on MacOS 12
- rename ffmpeg executable for Ubuntu arm64 to `ffmpeg-linux`

browser_patches/checkout_build_archive_upload.sh

@@ -60,6 +60,13 @@ elif [[ "$BUILD_FLAVOR" == "ffmpeg-mac" ]]; then
   EXPECTED_HOST_OS="Darwin"
   EXPECTED_HOST_OS_VERSION="11.6"
   BUILD_BLOB_NAME="ffmpeg-mac.zip"
+elif [[ "$BUILD_FLAVOR" == "ffmpeg-mac-arm64" ]]; then
+  BROWSER_NAME="ffmpeg"
+  EXTRA_BUILD_ARGS="--mac"
+  EXPECTED_HOST_OS="Darwin"
+  EXPECTED_HOST_OS_VERSION="11.6"
+  EXPECTED_ARCH="arm64"
+  BUILD_BLOB_NAME="ffmpeg-mac-arm64.zip"
 elif [[ "$BUILD_FLAVOR" == "ffmpeg-linux" ]]; then
   BROWSER_NAME="ffmpeg"
   EXTRA_BUILD_ARGS="--linux"

browser_patches/ffmpeg/BUILD_NUMBER

@@ -1 +1 @@
-1006
+1007

browser_patches/ffmpeg/EXPECTED_BUILDS

@@ -1,4 +1,5 @@
 ffmpeg-mac.zip
+ffmpeg-mac-arm64.zip
 ffmpeg-linux.zip
 ffmpeg-linux-arm64.zip
 ffmpeg-win64.zip

browser_patches/ffmpeg/build-mac.sh

@@ -29,11 +29,11 @@ source "${SCRIPT_FOLDER}/../utils.sh"
 
 CURRENT_HOST_OS_VERSION=$(getMacVersion)
 # As of Oct 2021, we build FFMPEG for Mac with Xcode 13 to align toolchains.
-if [[ "${CURRENT_HOST_OS_VERSION}" == "11."* ]]; then
-  selectXcodeVersionOrDie "13"
-else
+if [[ "${CURRENT_HOST_OS_VERSION}" == "10."* ]]; then
   echo "ERROR: ${CURRENT_HOST_OS_VERSION} is not supported"
   exit 1
+else
+  selectXcodeVersionOrDie "13"
 fi
 
 source ./CONFIG.sh

browser_patches/ffmpeg/build.sh

@@ -69,8 +69,8 @@ elif [[ "$1" == --cross-compile-win64 ]]; then
 elif [[ "$1" == "--cross-compile-linux-arm64" ]]; then
   ensure_docker_or_die
 
-  time docker run --init --rm -v"${PWD}":/host ${dockerflags} ubuntu:18.04 bash /host/crosscompile-from-linux.sh --linux-arm64 /host/output/ffmpeg-linux-arm64
-  cd output && zip ffmpeg.zip ffmpeg-linux-arm64 "${LICENSE_FILE}"
+  time docker run --init --rm -v"${PWD}":/host ${dockerflags} ubuntu:18.04 bash /host/crosscompile-from-linux.sh --linux-arm64 /host/output/ffmpeg-linux
+  cd output && zip ffmpeg.zip ffmpeg-linux "${LICENSE_FILE}"
 else
   echo "ERROR: unsupported platform - $1"
   exit 1