1 # Copyright 2014 The Chromium Authors
2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file.
5 import("//build/config/chrome_build.gni")
6 import("//build/config/chromecast_build.gni")
7 import("//build/config/chromeos/args.gni")
8 import("//build/config/chromeos/ui_mode.gni")
9 import("//build/config/features.gni")
10 import("//build/config/ui.gni")
11 import("//media/gpu/args.gni")
12 import("//testing/libfuzzer/fuzzer_test.gni")
13 import("//third_party/libaom/options.gni")
14 import("//third_party/libgav1/options.gni")
16 # This flag sets defaults for the current generation of cast devices.
17 is_cast_media_device = is_castos || is_cast_android
20 # Allows distributions to link pulseaudio directly (DT_NEEDED) instead of
21 # using dlopen. This helps with automated detection of ABI mismatches and
22 # prevents silent errors.
23 link_pulseaudio = false
25 # Enable usage of FFmpeg within the media library. Used for most software
26 # based decoding, demuxing, and sometimes optimized FFTs. If disabled,
27 # implementors must provide their own demuxers and decoders.
28 media_use_ffmpeg = true && tizen_multimedia
30 # Enable usage of libvpx within the media library. Used for software based
31 # decoding of VP9 and VP8A type content.
32 media_use_libvpx = true
34 # iOS doesn't use ffmpeg, libvpx.
36 media_use_ffmpeg = false
37 media_use_libvpx = false
40 # Enable usage of OpenH264 within the media library. Used for software based
41 # encoding of H264 content.
42 media_use_openh264 = true
43 if (is_ios || is_android || !proprietary_codecs) {
44 media_use_openh264 = false
47 # Override to dynamically link the cras (ChromeOS audio) library.
48 use_cras = is_chromeos_device
50 # Enables AC3/EAC3 audio demuxing. This is enabled only on Chromecast, since
51 # it only provides demuxing, and is only useful for AC3/EAC3 audio
52 # pass-through to HDMI sink on Chromecast.
53 enable_platform_ac3_eac3_audio = proprietary_codecs && is_cast_media_device
55 enable_platform_mpeg_h_audio = proprietary_codecs && is_cast_media_device
57 # Enables DTS/DTSX audio handling in chromium. This includes demuxing,
58 # on-device decoding and bitstream passthrough as supported by device.
59 enable_platform_dts_audio = false
61 # TODO(crbug.com/1329657): Remove the `is_fuchsia` condition once fuchsia
62 # builds set enable_cast_receiver.
63 enable_mse_mpeg2ts_stream_parser =
65 (enable_cast_receiver || is_fuchsia || use_fuzzing_engine)
67 # Enable Dolby Vision demuxing. Enable by default for Chromecast. Actual
68 # decoding must be provided by the platform. Note some Dolby Vision profiles
69 # which are encoded using HEVC require `enable_platform_hevc` to be enabled.
71 # TODO(crbug.com/1336055): Revisit the default value for this setting as it
72 # applies to video-capable devices.
73 enable_platform_dolby_vision = proprietary_codecs && is_cast_media_device
75 # Enable platform support of encrypted Dolby Vision. Clear Dolby Vision is
76 # still not supported. The actual support depends on platform capability.
77 enable_platform_encrypted_dolby_vision = false
79 # Enable HLS with SAMPLE-AES decryption.
81 # TODO(crbug.com/1329657): Remove the `is_fuchsia` condition once fuchsia
82 # builds set enable_cast_receiver.
83 enable_hls_sample_aes =
84 proprietary_codecs && (enable_cast_receiver || is_fuchsia)
86 # Enable logging override, e.g. enable DVLOGs through level 2 at build time.
87 # On Chromecast, these are logged as INFO.
88 # On Fuchsia, these are logged as VLOGs.
89 enable_logging_override = is_cast_media_device || is_fuchsia
91 enable_dav1d_decoder = !is_ios
93 # Enable browser managed persistent metadata storage for EME persistent
94 # session and persistent usage record session.
95 enable_media_drm_storage = is_android || is_castos
97 # Enable HLS manifest parser and demuxer.
98 enable_hls_demuxer = false
100 # Enable inclusion of the HEVC/H265 parser and also enable HEVC/H265 decoding
101 # with hardware acceleration assist. Enabled by default for fuzzer builds,
102 # ChromeOS builds with protected content support, Windows, Mac, and Android.
103 enable_hevc_parser_and_hw_decoder =
104 proprietary_codecs &&
105 (use_fuzzing_engine || use_chromeos_protected_media || is_win || is_mac ||
106 is_android || is_linux)
109 # Use another declare_args() to allow dependence on
110 # |enable_hevc_parser_and_hw_decoder|.
112 # If overriding this to false, possibly via its component values,
113 # `enable_libaom` should likely also be overriddent to false.
114 enable_av1_decoder = enable_dav1d_decoder || enable_libgav1_decoder
116 # Enable HEVC/H265 demuxing. Actual decoding must be provided by the
118 # TODO(b/194429120): Enable this for Lacros builds.
119 # TODO(crbug.com/1336055): Revisit the default value for this setting as it
120 # applies to video-capable devices.
121 enable_platform_hevc =
122 proprietary_codecs &&
123 (enable_hevc_parser_and_hw_decoder || is_cast_media_device)
127 !enable_platform_ac3_eac3_audio || proprietary_codecs,
128 "proprietary_codecs=true is required for enable_platform_ac3_eac3_audio=true.")
130 !enable_platform_mpeg_h_audio || proprietary_codecs,
131 "proprietary_codecs=true is required for enable_platform_mpeg_h_audio=true.")
133 !enable_mse_mpeg2ts_stream_parser || proprietary_codecs,
134 "proprietary_codecs=true is required for enable_mse_mpeg2ts_stream_parser=true.")
136 !enable_platform_dolby_vision || proprietary_codecs,
137 "proprietary_codecs=true is required for enable_platform_dolby_vision=true.")
139 !enable_platform_encrypted_dolby_vision || enable_platform_dolby_vision,
140 "enable_platform_dolby_vision=true is required for enable_platform_encrypted_dolby_vision=true.")
141 assert(!enable_hls_sample_aes || proprietary_codecs,
142 "proprietary_codecs=true is required for enable_hls_sample_aes=true.")
144 !enable_platform_dts_audio || proprietary_codecs,
145 "proprietary_codecs=true is required for enable_platform_dts_audio=true.")
148 !enable_hls_sample_aes || enable_mse_mpeg2ts_stream_parser,
149 "enable_mse_mpeg2ts_stream_parser=true is required for enable_hls_sample_aes=true.")
152 !enable_hls_demuxer || enable_mse_mpeg2ts_stream_parser,
153 "enable_mse_mpeg2ts_stream_parser=true is required for enable_hls_demuxer=true.")
155 assert(!enable_platform_hevc || proprietary_codecs,
156 "proprietary_codecs=true is required for enable_platform_hevc=true.")
159 !enable_hevc_parser_and_hw_decoder || enable_platform_hevc,
160 "enable_platform_hevc=true is required for enable_hevc_parser_and_hw_decoder=true.")
162 # Use another declare_args() to pick up possible overrides of |use_cras|.
164 # Enables runtime selection of PulseAudio library.
165 use_pulseaudio = false
167 # Enables runtime selection of ALSA library for audio.
170 # Alsa should be used on all non-Android, non-Mac POSIX systems - with the
171 # exception of CastOS desktop builds.
173 # TODO(crbug.com/1336055): Remove legacy target_cpu hack used for targeting
174 # desktop Chromecast builds.
175 if (is_posix && !is_android && !is_mac &&
176 (!is_castos || (target_cpu == "x86" || target_cpu == "x64") ||
177 is_cast_audio_only)) {
180 # Pulse is not supported on Chromecast platforms.
182 # ASAN and TSAN will occasionally hang during pa_context_connect(), so we
183 # disable PulseAudio when these configurations are enabled.
185 # TODO(crbug.com/986021): We shouldn't have to do this, but it's unclear why
186 # our test bots are hanging and all of the ones that don't hang just fall
187 # back to ALSA after a connection error anyways.
188 if (!use_cras && !is_castos && !is_asan && !is_tsan && !is_tizen) {
189 use_pulseaudio = true
194 # Use another declare_args() to include possible overrides of media_use_ffmpeg
195 # from --args command line flags in the evaluation. See "gn help declare_args".
197 # On Android, FFMpeg is built without video decoders by default.
198 # This flag gives the option to override that decision in case there are no
199 # hardware decoders. To do so, you will also need to update ffmpeg build files
200 # in order to define which decoders to build in.
201 enable_ffmpeg_video_decoders = media_use_ffmpeg && !is_android
205 # Enables the use of library CDMs that implements the interface defined at
206 # media/cdm/api/content_decryption_module.h. If true, the actually library CDM
207 # will be hosted in the mojo CDM service running in the CDM (utility) process.
208 # Used for all desktop platforms except Fuchsia (crbug.com/1265618).
209 enable_library_cdms = toolkit_views && !is_fuchsia && !is_castos
213 # Enables host verification for CDMs.
215 enable_cdm_host_verification =
216 enable_library_cdms && (is_mac || is_win) && is_chrome_branded
218 # Enable Storage ID which is used by CDMs. This is only available with chrome
219 # branding, but may be overridden by other embedders.
220 enable_cdm_storage_id = enable_library_cdms && is_chrome_branded &&
221 (is_win || is_mac || is_chromeos)
223 # If |enable_cdm_storage_id| is set, then an implementation specific key
224 # must also be provided. It can be provided by defining CDM_STORAGE_ID_KEY
225 # (which takes precedence), or by setting |alternate_cdm_storage_id_key|.
226 # The key must be a string of at least 32 characters.
227 alternate_cdm_storage_id_key = ""
230 assert(!enable_cdm_host_verification || is_mac || is_win,
231 "CDM host verification is only supported on Mac and Windows.")
233 # Default |mojo_media_services| and |mojo_media_host| on various platforms. See
234 # comments below for valid values. Can be overridden by gn build arguments from
235 # the --args command line flag.
236 _default_mojo_media_services = []
237 _default_mojo_media_host = ""
239 if (is_cast_media_device) {
240 _default_mojo_media_services = cast_mojo_media_services
241 _default_mojo_media_host = cast_mojo_media_host
242 } else if (is_android) {
243 _default_mojo_media_services = [
248 _default_mojo_media_host = "gpu"
249 } else if (is_mac || (is_win && enable_platform_dts_audio)) {
250 _default_mojo_media_services = [
255 _default_mojo_media_host = "gpu"
257 _default_mojo_media_services = [
261 _default_mojo_media_host = "gpu"
262 } else if (is_chromeos_ash || ((is_linux || is_chromeos_lacros) &&
263 (use_vaapi || use_v4l2_codec))) {
264 _default_mojo_media_services = [ "video_decoder" ]
265 _default_mojo_media_host = "gpu"
268 # When |enable_library_cdms| is true, the "cdm" service will run in a separate
269 # CdmService in the CDM (utility) process. Therefore there's no need to specify
270 # |_default_mojo_media_host| which controls where the MediaService runs in.
271 if (enable_library_cdms) {
272 _default_mojo_media_services += [ "cdm" ]
276 # A list of mojo media services that should be used in the media pipeline.
277 # Valid entries in the list are:
278 # - "renderer": Use mojo-based media Renderer service.
279 # - "cdm": Use mojo-based Content Decryption Module.
280 # - "audio_decoder": Use mojo-based audio decoder in the default media
281 # Renderer. Cannot be used with the mojo Renderer above.
282 # - "video_decoder": Use mojo-based video decoder in the default media
283 # Renderer. Cannot be used with the mojo Renderer above.
284 mojo_media_services = _default_mojo_media_services
286 # The process that the mojo MediaService runs in. By default, all services
287 # registered in |mojo_media_services| are hosted in the MediaService, with the
288 # exception that when |enable_library_cdms| is true, the "cdm" service will
289 # run in a separate CdmService in the CDM (utility) process, while other
290 # |mojo_media_services| still run in the MediaService in the process specified
291 # by "mojo_media_host".
293 # - "browser": Use mojo media service hosted in the browser process.
294 # - "gpu": Use mojo media service hosted in the gpu process.
295 # - "": Do not use mojo media service.
296 mojo_media_host = _default_mojo_media_host
300 # This switch defines whether the Media Remoting implementation will be built.
301 # When enabled, media is allowed to be renderer and played back on remote
302 # devices when the tab is being casted and other conditions are met.
303 enable_media_remoting = !is_cast_media_device && !is_ios
307 # Media Remoting RPC is disabled on Android since it's unused but increases
308 # the native binary size by ~70Kb.
309 enable_media_remoting_rpc = enable_media_remoting && !is_android
313 # Currently it is available on Win, Mac and Linux, since it requires the audio
314 # service to run in a separate process.
315 chrome_wide_echo_cancellation_supported = is_win || is_mac || is_linux
318 # Do not expand this list without double-checking with OWNERS, this is a list of
319 # all targets which roll up into the //media component. It controls visibility
320 # of subcomponent targets and public_deps for //media.
321 media_subcomponent_deps = [
325 # TODO(crbug.com/583067): These files should not be in //media/base.
326 "//media/base/android",
327 "//media/capabilities",
329 "//media/device_monitors",
338 media_subcomponent_deps += [
339 "//media/fuchsia/cdm",
340 "//media/fuchsia/common",
344 if (media_use_ffmpeg) {
345 media_subcomponent_deps += [ "//media/ffmpeg" ]
348 if (enable_library_cdms || is_win) {
349 media_subcomponent_deps += [ "//media/cdm:cdm_type_conversion" ]