media_switches.cc revision 5821806d5e7f356e8fa4b058a389a808ea183019
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/base/media_switches.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace switches { 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_SOLARIS) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The Alsa device to use when opening an audio stream. 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kAlsaOutputDevice[] = "alsa-output-device"; 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The Alsa device to use when opening an audio input stream. 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kAlsaInputDevice[] = "alsa-input-device"; 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_CRAS) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use CRAS, the ChromeOS audio server. 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kUseCras[] = "use-cras"; 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_PULSEAUDIO) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use PulseAudio on platforms that support it. 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kUsePulseAudio[] = "use-pulseaudio"; 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use exclusive mode audio streaming for Windows Vista and higher. 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Leads to lower latencies for audio streams which uses the 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// AudioParameters::AUDIO_PCM_LOW_LATENCY audio path. 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// See http://msdn.microsoft.com/en-us/library/windows/desktop/dd370844(v=vs.85).aspx 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// for details. 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kEnableExclusiveAudio[] = "enable-exclusive-audio"; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Disable automatic fallback from low latency to high latency path. 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kDisableAudioFallback[] = "disable-audio-fallback"; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Disable AudioOutputResampler for automatic audio resampling and rebuffering. 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kDisableAudioOutputResampler[] = "disable-audio-output-resampler"; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Controls renderer side mixing and low latency audio path for media elements. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) || defined(OS_MAC) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kDisableRendererSideMixing[] = "disable-renderer-side-mixing"; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kEnableRendererSideMixing[] = "enable-renderer-side-mixing"; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Enable browser-side audio mixer. 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kEnableAudioMixer[] = "enable-audio-mixer"; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Enable live audio input with getUserMedia() and the Web Audio API. 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kEnableWebAudioInput[] = "enable-webaudio-input"; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Set number of threads to use for video decoding. 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char kVideoThreads[] = "video-threads"; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace switches 58