| # Copyright 2014 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/chromecast_build.gni") |
| import("//build/config/features.gni") |
| |
| declare_args() { |
| # Allows distributions to link pulseaudio directly (DT_NEEDED) instead of |
| # using dlopen. This helps with automated detection of ABI mismatches and |
| # prevents silent errors. |
| link_pulseaudio = false |
| |
| # Enable usage of FFmpeg within the media library. Used for most software |
| # based decoding, demuxing, and sometimes optimized FFTs. If disabled, |
| # implementors must provide their own demuxers and decoders. |
| media_use_ffmpeg = true |
| |
| # Enable usage of libvpx within the media library. Used for software based |
| # decoding of VP9 and VP8A type content. |
| media_use_libvpx = true |
| |
| # iOS doesn't use ffmpeg, libvpx. |
| if (is_ios) { |
| media_use_ffmpeg = false |
| media_use_libvpx = false |
| } |
| |
| # Override to dynamically link the cras (ChromeOS audio) library. |
| use_cras = false |
| |
| # Use low-memory buffers on non-Android builds of Chromecast. |
| use_low_memory_buffer = is_chromecast && !is_android |
| |
| # Enables AC3/EAC3 audio demuxing. This is enabled only on Chromecast, since |
| # it only provides demuxing, and is only useful for AC3/EAC3 audio |
| # pass-through to HDMI sink on Chromecast. |
| enable_ac3_eac3_audio_demuxing = proprietary_codecs && is_chromecast |
| |
| enable_mse_mpeg2ts_stream_parser = proprietary_codecs && is_chromecast |
| |
| # Enable HEVC/H265 demuxing. Actual decoding must be provided by the |
| # platform. Enable by default for Chromecast. |
| enable_hevc_demuxing = proprietary_codecs && is_chromecast |
| |
| # TODO(GYP): This should be a platform define. |
| is_openbsd = false |
| } |
| |
| # Use a second declare_args() to pick up possible overrides of |use_cras|. |
| declare_args() { |
| # Enables runtime selection of PulseAudio library. |
| use_pulseaudio = false |
| |
| # Enables runtime selection of ALSA library for audio. |
| use_alsa = false |
| |
| # Alsa should be used on non-Android, non-Mac POSIX systems. |
| if (is_posix && !is_android && !is_mac) { |
| use_alsa = true |
| |
| # Pulse is not supported on Chromecast platforms. |
| if (!use_cras && !is_chromecast) { |
| use_pulseaudio = true |
| } |
| } |
| } |
| |
| declare_args() { |
| # Experiment to enable mojo media services (e.g. "renderer", "cdm", see |
| # |mojo_media_services|). When enabled, selected mojo paths will be enabled in |
| # the media pipeline and corresponding services will hosted in the selected |
| # remote process (e.g. "utility" process, see |mojo_media_host|). |
| enable_mojo_media = is_android |
| |
| # Enable the TestMojoMediaClient to be used in MojoMediaApplication. This is |
| # for testing only and will override the default platform MojoMediaClient. |
| enable_test_mojo_media_client = false |
| } |
| |
| # Use a second declare_args() to pick up possible overrides of enable_mojo_media |
| # from --args command line flags. See "gn help declare_args". |
| declare_args() { |
| # A list of mojo media services that should be used in the media pipeline. |
| # Must not be empty if |enable_mojo_media| is true. |
| # Valid entries in the list are: |
| # - "renderer": Use mojo-based media Renderer service. |
| # - "cdm": Use mojo-based Content Decryption Module. |
| # - "audio_decoder": Use mojo-based audio decoder in the default media |
| # Renderer. Cannot be used with the mojo Renderer above. |
| # - "video_decoder": Use mojo-based video decoder in the default media |
| # Renderer. Cannot be used with the mojo Renderer above. |
| mojo_media_services = [] |
| |
| # The process to host the mojo media application. |
| # Valid options are: |
| # - "none": Do not use mojo media application. |
| # - "browser": Use mojo media application hosted in the browser process. |
| # - "gpu": Use mojo media application hosted in the gpu process. |
| # - "utility": Use mojo media application hosted in the utility process. |
| mojo_media_host = "none" |
| |
| # Default mojo_media_services and mojo_media_host on various platforms. |
| # Can be overridden by gn build arguments from the --args command line flag |
| # for local testing. |
| if (enable_mojo_media) { |
| if (is_android) { |
| mojo_media_services = [ |
| "cdm", |
| "audio_decoder", |
| ] |
| mojo_media_host = "gpu" |
| } else if (is_chromecast) { |
| mojo_media_services = [ |
| "cdm", |
| "renderer", |
| ] |
| mojo_media_host = "browser" |
| } else { |
| mojo_media_services = [ "cdm" ] |
| mojo_media_host = "utility" |
| } |
| } |
| } |