15976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org/* 25976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * libjingle 35976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * Copyright 2004--2010, Google Inc. 45976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 55976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * Redistribution and use in source and binary forms, with or without 65976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * modification, are permitted provided that the following conditions are met: 75976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 85976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 1. Redistributions of source code must retain the above copyright notice, 95976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * this list of conditions and the following disclaimer. 105976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 2. Redistributions in binary form must reproduce the above copyright notice, 115976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * this list of conditions and the following disclaimer in the documentation 125976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * and/or other materials provided with the distribution. 135976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 3. The name of the author may not be used to endorse or promote products 145976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * derived from this software without specific prior written permission. 155976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * 165976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 175976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 185976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 195976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 205976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 215976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 225976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 235976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 245976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 255976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 265976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org */ 275976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 285976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#include "talk/sound/nullsoundsystem.h" 295976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 305976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#include "talk/base/logging.h" 315976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#include "talk/sound/sounddevicelocator.h" 325976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#include "talk/sound/soundinputstreaminterface.h" 335976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org#include "talk/sound/soundoutputstreaminterface.h" 345976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 355976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgnamespace talk_base { 365976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 375976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgclass Thread; 385976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 395976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 405976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 415976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgnamespace cricket { 425976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 435976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org// Name used for the single device and the sound system itself. 445976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgstatic const char kNullName[] = "null"; 455976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 465976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgclass NullSoundDeviceLocator : public SoundDeviceLocator { 475976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org public: 485976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org NullSoundDeviceLocator() : SoundDeviceLocator(kNullName, kNullName) {} 495976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 505976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual SoundDeviceLocator *Copy() const { 515976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return new NullSoundDeviceLocator(); 525976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 535976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org}; 545976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 555976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgclass NullSoundInputStream : public SoundInputStreamInterface { 565976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org public: 575976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool StartReading() { 585976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 595976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 605976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 615976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool StopReading() { 625976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 635976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 645976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 655976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool GetVolume(int *volume) { 665976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org *volume = SoundSystemInterface::kMinVolume; 675976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 685976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 695976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 705976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool SetVolume(int volume) { 715976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return false; 725976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 735976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 745976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool Close() { 755976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 765976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 775976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 785976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual int LatencyUsecs() { 795976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return 0; 805976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 815976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org}; 825976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 835976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgclass NullSoundOutputStream : public SoundOutputStreamInterface { 845976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org public: 855976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool EnableBufferMonitoring() { 865976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 875976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 885976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 895976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool DisableBufferMonitoring() { 905976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 915976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 925976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 935976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool WriteSamples(const void *sample_data, 945976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org size_t size) { 955976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org LOG(LS_VERBOSE) << "Got " << size << " bytes of playback samples"; 965976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 975976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 985976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 995976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool GetVolume(int *volume) { 1005976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org *volume = SoundSystemInterface::kMinVolume; 1015976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 1025976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 1035976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1045976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool SetVolume(int volume) { 1055976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return false; 1065976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 1075976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1085976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual bool Close() { 1095976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 1105976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 1115976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1125976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org virtual int LatencyUsecs() { 1135976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return 0; 1145976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org } 1155976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org}; 1165976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1175976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgNullSoundSystem::~NullSoundSystem() { 1185976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1195976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1205976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgbool NullSoundSystem::Init() { 1215976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 1225976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1235976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1245976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgvoid NullSoundSystem::Terminate() { 1255976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org // Nothing to do. 1265976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1275976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1285976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgbool NullSoundSystem::EnumeratePlaybackDevices( 1295976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org SoundSystemInterface::SoundDeviceLocatorList *devices) { 1305976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org ClearSoundDeviceLocatorList(devices); 1315976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org SoundDeviceLocator *device; 1325976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org GetDefaultPlaybackDevice(&device); 1335976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org devices->push_back(device); 1345976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 1355976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1365976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1375976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgbool NullSoundSystem::EnumerateCaptureDevices( 1385976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org SoundSystemInterface::SoundDeviceLocatorList *devices) { 1395976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org ClearSoundDeviceLocatorList(devices); 1405976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org SoundDeviceLocator *device; 1415976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org GetDefaultCaptureDevice(&device); 1425976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org devices->push_back(device); 1435976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 1445976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1455976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1465976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgbool NullSoundSystem::GetDefaultPlaybackDevice( 1475976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org SoundDeviceLocator **device) { 1485976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org *device = new NullSoundDeviceLocator(); 1495976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 1505976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1515976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1525976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgbool NullSoundSystem::GetDefaultCaptureDevice( 1535976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org SoundDeviceLocator **device) { 1545976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org *device = new NullSoundDeviceLocator(); 1555976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return true; 1565976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1575976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1585976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgSoundOutputStreamInterface *NullSoundSystem::OpenPlaybackDevice( 1595976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org const SoundDeviceLocator *device, 1605976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org const OpenParams ¶ms) { 1615976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return new NullSoundOutputStream(); 1625976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1635976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1645976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgSoundInputStreamInterface *NullSoundSystem::OpenCaptureDevice( 1655976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org const SoundDeviceLocator *device, 1665976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org const OpenParams ¶ms) { 1675976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return new NullSoundInputStream(); 1685976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1695976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1705976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.orgconst char *NullSoundSystem::GetName() const { 1715976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org return kNullName; 1725976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} 1735976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org 1745976650443d68ccfadf1dea24999ee459dd2819mflodman@webrtc.org} // namespace cricket 175