src/media/lib/ffmpeg/ffmpeg_args.gni

# Copyright 2026 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

declare_args() {
  # Use a prebuilt ffmpeg binary rather than building it locally.  See
  # //src/media/lib/ffmpeg/README.md for details.  This is ignored when
  # building in variant builds for which there is no prebuilt.  In that case,
  # ffmpeg is always built from source so as to be built with the selected
  # variant's config.  When this is false (either explicitly or in a variant
  # build) then //third_party/ffmpeg must be in the source tree, which
  # requires:
  #
  # ```
  # jiri import -name third_party/ffmpeg -revision HEAD third_party/ffmpeg http://fuchsia.googlesource.com/integration
  # ```
  # TODO(https://fxbug.dev/42068172): This isn't currently working. Use the method below.
  #
  # Or, if already importing a different manifest from there, resulting in
  # errors from jiri update, it can work to just git clone (but jiri update
  # won't manage third_party/ffmpeg in this case):
  #
  # ```
  # mkdir build/secondary/third_party/ffmpeg
  # git clone https://fuchsia.googlesource.com/third_party/ffmpeg build/secondary/third_party/ffmpeg
  # mkdir third_party/yasm
  # git clone https://fuchsia.googlesource.com/third_party/yasm third_party/yasm
  # mkdir third_party/ffmpeg/src
  # git clone https://chromium.googlesource.com/chromium/third_party/ffmpeg third_party/ffmpeg/src
  # ```
  use_prebuilt_ffmpeg = true
}

if (use_prebuilt_ffmpeg) {
  # When use_prebuilt_ffmpeg is false, this is declared in //third_party/ffmpeg.
  declare_args() {
    ffmpeg_profile = "default"
  }
}