# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/config/chromeos/ui_mode.gni")
import("//build/config/ozone.gni")

declare_args() {
  # Indicates if X11 VA-API-based hardware acceleration is to be used.
  # See also the comment near the |use_vaapi| arg.
  use_vaapi_x11 =
      is_linux && ozone_platform_x11 && !is_chromecast && !is_chromeos_lacros &&
      (target_cpu == "x86" || target_cpu == "x64")
}

declare_args() {
  # Indicates if V4L plugin is used.
  use_v4lplugin = false

  # Indicates if Video4Linux2 codec is used. This is used for all CrOS
  # platforms which have v4l2 hardware encoder / decoder.
  use_v4l2_codec = false

  # Indicates if Video4Linux2 AML encoder is used. This is used for AML
  # platforms which have v4l2 hardware encoder
  use_v4l2_codec_aml = false

  # Indicates if VA-API-based hardware acceleration is to be used. This
  # is typically the case on x86-based ChromeOS devices.
  # VA-API should also be compiled by default on x11-using linux devices
  # using x86/x64.
  use_vaapi = use_vaapi_x11

  # Indicates if ChromeOS protected media support exists. This is used
  # to enable the CDM daemon in Chrome OS as well as support for
  # encrypted content with HW video decoders.
  # TODO(jkardatzke): Enable this for Lacros always, it is determined at runtime
  # in that configuration.
  use_chromeos_protected_media = false

  # Indicates if ChromeOS protected media supports the AV1 codec. By default
  # H.264, VP9 and HEVC are enabled if protected media is enabled; AV1 is
  # optional.
  use_chromeos_protected_av1 = false
}

if (use_chromeos_protected_av1) {
  assert(
      use_chromeos_protected_media,
      "use_chromeos_protected_media must be set if use_chromeos_protected_av1 is")
}

# GN requires args that depend on other args to be declared in successive
# declare_args() blocks.
declare_args() {
  # VA-API also allows decoding of images, but we don't want to use this
  # outside of chromeos, even if video decoding is enabled.
  use_vaapi_image_codecs = use_vaapi && is_chromeos_ash
}