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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "build/build_config.h" | 5 #include "build/build_config.h" |
6 #include "media/base/media_switches.h" | 6 #include "media/base/media_switches.h" |
7 #include "ppapi/features/features.h" | 7 #include "ppapi/features/features.h" |
8 | 8 |
9 namespace switches { | 9 namespace switches { |
10 | 10 |
11 // Allow users to specify a custom buffer size for debugging purpose. | 11 // Allow users to specify a custom buffer size for debugging purpose. |
12 const char kAudioBufferSize[] = "audio-buffer-size"; | 12 const char kAudioBufferSize[] = "audio-buffer-size"; |
13 | 13 |
| 14 // Command line flag name to set the autoplay policy. |
| 15 const char kAutoplayPolicy[] = "autoplay-policy"; |
| 16 |
14 // Set number of threads to use for video decoding. | 17 // Set number of threads to use for video decoding. |
15 const char kVideoThreads[] = "video-threads"; | 18 const char kVideoThreads[] = "video-threads"; |
16 | 19 |
17 // Suspend media pipeline on background tabs. | 20 // Suspend media pipeline on background tabs. |
18 const char kEnableMediaSuspend[] = "enable-media-suspend"; | 21 const char kEnableMediaSuspend[] = "enable-media-suspend"; |
19 const char kDisableMediaSuspend[] = "disable-media-suspend"; | 22 const char kDisableMediaSuspend[] = "disable-media-suspend"; |
20 | 23 |
21 // Force to report VP9 as an unsupported MIME type. | 24 // Force to report VP9 as an unsupported MIME type. |
22 const char kReportVp9AsAnUnsupportedMimeType[] = | 25 const char kReportVp9AsAnUnsupportedMimeType[] = |
23 "report-vp9-as-an-unsupported-mime-type"; | 26 "report-vp9-as-an-unsupported-mime-type"; |
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128 const char kEnableVp9InMp4[] = "enable-vp9-in-mp4"; | 131 const char kEnableVp9InMp4[] = "enable-vp9-in-mp4"; |
129 | 132 |
130 // Force media player using SurfaceView instead of SurfaceTexture on Android. | 133 // Force media player using SurfaceView instead of SurfaceTexture on Android. |
131 const char kForceVideoOverlays[] = "force-video-overlays"; | 134 const char kForceVideoOverlays[] = "force-video-overlays"; |
132 | 135 |
133 // Allows explicitly specifying MSE audio/video buffer sizes. | 136 // Allows explicitly specifying MSE audio/video buffer sizes. |
134 // Default values are 150M for video and 12M for audio. | 137 // Default values are 150M for video and 12M for audio. |
135 const char kMSEAudioBufferSizeLimit[] = "mse-audio-buffer-size-limit"; | 138 const char kMSEAudioBufferSizeLimit[] = "mse-audio-buffer-size-limit"; |
136 const char kMSEVideoBufferSizeLimit[] = "mse-video-buffer-size-limit"; | 139 const char kMSEVideoBufferSizeLimit[] = "mse-video-buffer-size-limit"; |
137 | 140 |
| 141 namespace autoplay { |
| 142 |
| 143 // Autoplay policy to require a user gesture in ordor to play for cross origin |
| 144 // iframes. |
| 145 const char kCrossOriginUserGestureRequiredPolicy[] = |
| 146 "cross-origin-user-gesture-required"; |
| 147 |
| 148 // Autoplay policy that does not require any user gesture. |
| 149 const char kNoUserGestureRequiredPolicy[] = "no-user-gesture-required"; |
| 150 |
| 151 // Autoplay policy to require a user gesture in order to play. |
| 152 const char kUserGestureRequiredPolicy[] = "user-gesture-required"; |
| 153 |
| 154 } // namespace autoplay |
| 155 |
138 } // namespace switches | 156 } // namespace switches |
139 | 157 |
140 namespace media { | 158 namespace media { |
141 | 159 |
142 #if defined(OS_WIN) | |
143 // Enables video decode acceleration using the D3D11 video decoder api. | |
144 // This is completely insecure - DO NOT USE except for testing. | |
145 const base::Feature kD3D11VideoDecoding{"D3D11VideoDecoding", | |
146 base::FEATURE_DISABLED_BY_DEFAULT}; | |
147 | |
148 // Enables H264 HW encode acceleration using Media Foundation for Windows. | |
149 const base::Feature kMediaFoundationH264Encoding{ | |
150 "MediaFoundationH264Encoding", base::FEATURE_ENABLED_BY_DEFAULT}; | |
151 #endif // defined(OS_WIN) | |
152 | |
153 // Use new audio rendering mixer. | 160 // Use new audio rendering mixer. |
154 const base::Feature kNewAudioRenderingMixingStrategy{ | 161 const base::Feature kNewAudioRenderingMixingStrategy{ |
155 "NewAudioRenderingMixingStrategy", base::FEATURE_DISABLED_BY_DEFAULT}; | 162 "NewAudioRenderingMixingStrategy", base::FEATURE_DISABLED_BY_DEFAULT}; |
156 | 163 |
157 // Only used for disabling overlay fullscreen (aka SurfaceView) in Clank. | 164 // Only used for disabling overlay fullscreen (aka SurfaceView) in Clank. |
158 const base::Feature kOverlayFullscreenVideo{"overlay-fullscreen-video", | 165 const base::Feature kOverlayFullscreenVideo{"overlay-fullscreen-video", |
159 base::FEATURE_ENABLED_BY_DEFAULT}; | 166 base::FEATURE_ENABLED_BY_DEFAULT}; |
160 | 167 |
161 // Let videos be resumed via remote controls (for example, the notification) | 168 // Let videos be resumed via remote controls (for example, the notification) |
162 // when in background. | 169 // when in background. |
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207 "VideoFullscreenOrientationLock", base::FEATURE_ENABLED_BY_DEFAULT}; | 214 "VideoFullscreenOrientationLock", base::FEATURE_ENABLED_BY_DEFAULT}; |
208 | 215 |
209 // An experimental feature to enable persistent-license type support in MediaDrm | 216 // An experimental feature to enable persistent-license type support in MediaDrm |
210 // when using Encrypted Media Extensions (EME) API. | 217 // when using Encrypted Media Extensions (EME) API. |
211 // TODO(xhwang): Remove this after feature launch. See http://crbug.com/493521 | 218 // TODO(xhwang): Remove this after feature launch. See http://crbug.com/493521 |
212 const base::Feature kMediaDrmPersistentLicense{ | 219 const base::Feature kMediaDrmPersistentLicense{ |
213 "MediaDrmPersistentLicense", base::FEATURE_DISABLED_BY_DEFAULT}; | 220 "MediaDrmPersistentLicense", base::FEATURE_DISABLED_BY_DEFAULT}; |
214 | 221 |
215 #endif | 222 #endif |
216 | 223 |
| 224 #if defined(OS_WIN) |
| 225 // Enables video decode acceleration using the D3D11 video decoder api. |
| 226 // This is completely insecure - DO NOT USE except for testing. |
| 227 const base::Feature kD3D11VideoDecoding{"D3D11VideoDecoding", |
| 228 base::FEATURE_DISABLED_BY_DEFAULT}; |
| 229 |
| 230 // Enables H264 HW encode acceleration using Media Foundation for Windows. |
| 231 const base::Feature kMediaFoundationH264Encoding{ |
| 232 "MediaFoundationH264Encoding", base::FEATURE_ENABLED_BY_DEFAULT}; |
| 233 #endif // defined(OS_WIN) |
| 234 |
217 } // namespace media | 235 } // namespace media |
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