|  | # Copyright 2015 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. | 
|  |  | 
|  | # The args declared in this file should be referenced by components outside of | 
|  | # //chromecast. Args needed only in //chromecast should be declared in | 
|  | # //chromecast/chromecast.gni. | 
|  | declare_args() { | 
|  | # Set this true for a Chromecast build. Chromecast builds are supported on | 
|  | # Linux and Android. | 
|  | is_chromecast = false | 
|  |  | 
|  | # Set this true for an audio-only Chromecast build. | 
|  | is_cast_audio_only = false | 
|  | } | 
|  |  | 
|  | # Note(slan): This arg depends on the value of is_chromecast, and thus must be | 
|  | # declared in a separate block. These blocks can be combined when/if | 
|  | # crbug.com/542846 is resolved. | 
|  | declare_args() { | 
|  | # True if Chromecast build is targeted for linux desktop. This type of build | 
|  | # is useful for testing and development, but currently supports only a subset | 
|  | # of Cast functionality. Though this defaults to true for x86 Linux devices, | 
|  | # this should be overriden manually for an embedded x86 build. | 
|  | # TODO(slan): Remove instances of this when x86 is a fully supported platform. | 
|  | is_cast_desktop_build = is_chromecast && target_os == "linux" && | 
|  | (target_cpu == "x86" || target_cpu == "x64") | 
|  | } | 
|  |  | 
|  | # Assert that Chromecast is being built for a supported platform. | 
|  | assert(is_linux || is_android || is_fuchsia || !is_chromecast, | 
|  | "Chromecast builds are not supported on $target_os") | 
|  |  | 
|  | # Assert that is_cast_audio_only and is_cast_desktop_build are both false on a | 
|  | # non-Chromecast build. | 
|  | assert(is_chromecast || (!is_cast_audio_only && !is_cast_desktop_build)) |