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Suspend decoding of video in background tabs once timer fires. The timer is trigger on switch to invisible and reset each time becomes visible. Default timer is set at 10 seconds and is controlled via pref media.suspend-bkgnd-video.delay-ms. MozReview-Commit-ID: IPIQ1g7Hkpw --HG-- extra : rebase_source : d3610dced708ea79611beeed40fc8c8a07ee2d1b
151 lines
7.0 KiB
C++
151 lines
7.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MEDIA_PREFS_H
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#define MEDIA_PREFS_H
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// First time MediaPrefs::GetSingleton() needs to be called on the main thread,
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// before any of the methods accessing the values are used, but after
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// the Preferences system has been initialized.
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// The static methods to access the preference value are safe to call
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// from any thread after that first call.
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// To register a preference, you need to add a line in this file using
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// the DECL_MEDIA_PREF macro.
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//
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// For example this line in the .h:
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// DECL_MEDIA_PREF("media.resampling.enabled",AudioSinkResampling,bool,false);
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// means that you can call
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// const bool& var = MediaPrefs::AudioSinkResampling();
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// from any thread, you will get the most up to date preference value of
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// "media.resampling.enabled". If the value is not set, the default would be
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// false.
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#define DECL_MEDIA_PREF(Pref, Name, Type, Default) \
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public: \
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static const Type& Name() { MOZ_ASSERT(SingletonExists()); return GetSingleton().mPref##Name.mValue; } \
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private: \
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static const char* Get##Name##PrefName() { return Pref; } \
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static Type Get##Name##PrefDefault() { return Default; } \
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PrefTemplate<Type, Get##Name##PrefDefault, Get##Name##PrefName> mPref##Name
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// Custom Definitions.
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#define GMP_DEFAULT_ASYNC_SHUTDOWN_TIMEOUT 3000
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#define SUSPEND_BACKGROUND_VIDEO_DELAY_MS 10000
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#define TEST_PREFERENCE_FAKE_RECOGNITION_SERVICE "media.webspeech.test.fake_recognition_service"
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namespace mozilla {
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template<class T> class StaticAutoPtr;
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class MediaPrefs final
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{
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private:
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// Since we cannot use const char*, use a function that returns it.
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template <class T, T Default(), const char* Pref()>
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class PrefTemplate
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{
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public:
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PrefTemplate()
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: mValue(Default())
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{
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Register(Pref());
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}
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T mValue;
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private:
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void Register(const char* aPreference)
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{
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AssertMainThread();
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PrefAddVarCache(&mValue, aPreference, mValue);
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}
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};
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// This is where DECL_MEDIA_PREF for each of the preferences should go.
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// AudioSink
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DECL_MEDIA_PREF("accessibility.monoaudio.enable", MonoAudio, bool, false);
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DECL_MEDIA_PREF("media.resampling.enabled", AudioSinkResampling, bool, false);
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DECL_MEDIA_PREF("media.resampling.rate", AudioSinkResampleRate, uint32_t, 48000);
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DECL_MEDIA_PREF("media.forcestereo.enabled", AudioSinkForceStereo, bool, true);
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// PlatformDecoderModule
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DECL_MEDIA_PREF("media.apple.forcevda", AppleForceVDA, bool, false);
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DECL_MEDIA_PREF("media.gmp.insecure.allow", GMPAllowInsecure, bool, false);
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DECL_MEDIA_PREF("media.gmp.async-shutdown-timeout", GMPAsyncShutdownTimeout, uint32_t, GMP_DEFAULT_ASYNC_SHUTDOWN_TIMEOUT);
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DECL_MEDIA_PREF("media.eme.enabled", EMEEnabled, bool, false);
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DECL_MEDIA_PREF("media.use-blank-decoder", PDMUseBlankDecoder, bool, false);
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#ifdef MOZ_GONK_MEDIACODEC
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DECL_MEDIA_PREF("media.gonk.enabled", PDMGonkDecoderEnabled, bool, true);
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#endif
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#ifdef MOZ_WIDGET_ANDROID
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DECL_MEDIA_PREF("media.android-media-codec.enabled", PDMAndroidMediaCodecEnabled, bool, false);
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DECL_MEDIA_PREF("media.android-media-codec.preferred", PDMAndroidMediaCodecPreferred, bool, false);
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#endif
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#ifdef MOZ_FFMPEG
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DECL_MEDIA_PREF("media.ffmpeg.enabled", PDMFFmpegEnabled, bool, true);
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#endif
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#ifdef MOZ_FFVPX
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DECL_MEDIA_PREF("media.ffvpx.enabled", PDMFFVPXEnabled, bool, true);
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#endif
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#ifdef XP_WIN
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DECL_MEDIA_PREF("media.wmf.enabled", PDMWMFEnabled, bool, true);
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DECL_MEDIA_PREF("media.webm.intel_decoder.enabled", PDMWMFIntelDecoderEnabled, bool, false);
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DECL_MEDIA_PREF("media.wmf.low-latency.enabled", PDMWMFLowLatencyEnabled, bool, false);
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DECL_MEDIA_PREF("media.wmf.decoder.thread-count", PDMWMFThreadCount, int32_t, -1);
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DECL_MEDIA_PREF("media.wmf.skip-blacklist", PDMWMFSkipBlacklist, bool, false);
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DECL_MEDIA_PREF("media.windows-media-foundation.max-dxva-videos", PDMWMFMaxDXVAVideos, uint32_t, 8);
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DECL_MEDIA_PREF("media.windows-media-foundation.allow-d3d11-dxva", PDMWMFAllowD3D11, bool, true);
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#endif
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DECL_MEDIA_PREF("media.decoder.fuzzing.enabled", PDMFuzzingEnabled, bool, false);
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DECL_MEDIA_PREF("media.decoder.fuzzing.video-output-minimum-interval-ms", PDMFuzzingInterval, uint32_t, 0);
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DECL_MEDIA_PREF("media.decoder.fuzzing.dont-delay-inputexhausted", PDMFuzzingDelayInputExhausted, bool, true);
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DECL_MEDIA_PREF("media.gmp.decoder.enabled", PDMGMPEnabled, bool, true);
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DECL_MEDIA_PREF("media.gmp.decoder.aac", GMPAACPreferred, uint32_t, 0);
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DECL_MEDIA_PREF("media.gmp.decoder.h264", GMPH264Preferred, uint32_t, 0);
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// MediaDecoderStateMachine
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DECL_MEDIA_PREF("media.suspend-bkgnd-video.enabled", MDSMSuspendBackgroundVideoEnabled, bool, false);
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DECL_MEDIA_PREF("media.suspend-bkgnd-video.delay-ms", MDSMSuspendBackgroundVideoDelay, uint32_t, SUSPEND_BACKGROUND_VIDEO_DELAY_MS);
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// WebSpeech
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DECL_MEDIA_PREF("media.webspeech.synth.force_global_queue", WebSpeechForceGlobal, bool, false);
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DECL_MEDIA_PREF("media.webspeech.test.enable", WebSpeechTestEnabled, bool, false);
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DECL_MEDIA_PREF("media.webspeech.test.fake_fsm_events", WebSpeechFakeFSMEvents, bool, false);
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DECL_MEDIA_PREF(TEST_PREFERENCE_FAKE_RECOGNITION_SERVICE, WebSpeechFakeRecognitionService, bool, false);
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DECL_MEDIA_PREF("media.webspeech.recognition.enable", WebSpeechRecognitionEnabled, bool, false);
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DECL_MEDIA_PREF("media.webspeech.recognition.force_enable", WebSpeechRecognitionForceEnabled, bool, false);
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DECL_MEDIA_PREF("media.num-decode-threads", MediaThreadPoolDefaultCount, uint32_t, 4);
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public:
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// Manage the singleton:
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static MediaPrefs& GetSingleton();
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static bool SingletonExists();
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private:
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template<class T> friend class StaticAutoPtr;
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static StaticAutoPtr<MediaPrefs> sInstance;
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// Creating these to avoid having to include Preferences.h in the .h
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static void PrefAddVarCache(bool*, const char*, bool);
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static void PrefAddVarCache(int32_t*, const char*, int32_t);
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static void PrefAddVarCache(uint32_t*, const char*, uint32_t);
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static void PrefAddVarCache(float*, const char*, float);
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static void AssertMainThread();
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MediaPrefs();
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MediaPrefs(const MediaPrefs&) = delete;
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MediaPrefs& operator=(const MediaPrefs&) = delete;
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};
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#undef DECL_MEDIA_PREF /* Don't need it outside of this file */
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} // namespace mozilla
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#endif /* MEDIA_PREFS_H */
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