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      1 /*
      2  * libjingle
      3  * Copyright 2011 Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef TALK_MEDIA_WEBRTCMEDIAENGINE_H_
     29 #define TALK_MEDIA_WEBRTCMEDIAENGINE_H_
     30 
     31 #include "talk/media/base/mediaengine.h"
     32 #include "talk/media/webrtc/webrtcexport.h"
     33 
     34 namespace webrtc {
     35 class AudioDeviceModule;
     36 class VideoCaptureModule;
     37 }
     38 namespace cricket {
     39 class WebRtcVideoDecoderFactory;
     40 class WebRtcVideoEncoderFactory;
     41 }
     42 
     43 #if !defined(LIBPEERCONNECTION_LIB) && \
     44     !defined(LIBPEERCONNECTION_IMPLEMENTATION)
     45 
     46 WRME_EXPORT
     47 cricket::MediaEngineInterface* CreateWebRtcMediaEngine(
     48     webrtc::AudioDeviceModule* adm, webrtc::AudioDeviceModule* adm_sc,
     49     cricket::WebRtcVideoEncoderFactory* encoder_factory,
     50     cricket::WebRtcVideoDecoderFactory* decoder_factory);
     51 
     52 WRME_EXPORT
     53 void DestroyWebRtcMediaEngine(cricket::MediaEngineInterface* media_engine);
     54 
     55 #endif  // !defined(LIBPEERCONNECTION_LIB) &&
     56         // !defined(LIBPEERCONNECTION_IMPLEMENTATION)
     57 
     58 namespace cricket {
     59 
     60 class WebRtcMediaEngineFactory {
     61  public:
     62 #if !defined(LIBPEERCONNECTION_LIB) && \
     63     !defined(LIBPEERCONNECTION_IMPLEMENTATION)
     64 // A bare Create() isn't supported when using the delegating media
     65 // engine.
     66 #else
     67   static MediaEngineInterface* Create();
     68 #endif  // !defined(LIBPEERCONNECTION_LIB) &&
     69         // !defined(LIBPEERCONNECTION_IMPLEMENTATION)
     70   static MediaEngineInterface* Create(
     71       webrtc::AudioDeviceModule* adm,
     72       webrtc::AudioDeviceModule* adm_sc,
     73       WebRtcVideoEncoderFactory* encoder_factory,
     74       WebRtcVideoDecoderFactory* decoder_factory);
     75 };
     76 
     77 }  // namespace cricket
     78 
     79 
     80 #if !defined(LIBPEERCONNECTION_LIB) && \
     81     !defined(LIBPEERCONNECTION_IMPLEMENTATION)
     82 
     83 namespace cricket {
     84 
     85 // TODO(pthacther): Move this code into webrtcmediaengine.cc once
     86 // Chrome compiles it.  Right now it relies on only the .h file.
     87 class DelegatingWebRtcMediaEngine : public cricket::MediaEngineInterface {
     88  public:
     89   DelegatingWebRtcMediaEngine(
     90       webrtc::AudioDeviceModule* adm,
     91       webrtc::AudioDeviceModule* adm_sc,
     92       WebRtcVideoEncoderFactory* encoder_factory,
     93       WebRtcVideoDecoderFactory* decoder_factory)
     94       : delegate_(CreateWebRtcMediaEngine(
     95           adm, adm_sc, encoder_factory, decoder_factory)) {
     96   }
     97   virtual ~DelegatingWebRtcMediaEngine() {
     98     DestroyWebRtcMediaEngine(delegate_);
     99   }
    100   virtual bool Init(rtc::Thread* worker_thread) OVERRIDE {
    101     return delegate_->Init(worker_thread);
    102   }
    103   virtual void Terminate() OVERRIDE {
    104     delegate_->Terminate();
    105   }
    106   virtual int GetCapabilities() OVERRIDE {
    107     return delegate_->GetCapabilities();
    108   }
    109   virtual VoiceMediaChannel* CreateChannel() OVERRIDE {
    110     return delegate_->CreateChannel();
    111   }
    112   virtual VideoMediaChannel* CreateVideoChannel(
    113       VoiceMediaChannel* voice_media_channel) OVERRIDE {
    114     return delegate_->CreateVideoChannel(voice_media_channel);
    115   }
    116   virtual SoundclipMedia* CreateSoundclip() OVERRIDE {
    117     return delegate_->CreateSoundclip();
    118   }
    119   virtual AudioOptions GetAudioOptions() const OVERRIDE {
    120     return delegate_->GetAudioOptions();
    121   }
    122   virtual bool SetAudioOptions(const AudioOptions& options) OVERRIDE {
    123     return delegate_->SetAudioOptions(options);
    124   }
    125   virtual bool SetAudioDelayOffset(int offset) OVERRIDE {
    126     return delegate_->SetAudioDelayOffset(offset);
    127   }
    128   virtual bool SetDefaultVideoEncoderConfig(
    129       const VideoEncoderConfig& config) OVERRIDE {
    130     return delegate_->SetDefaultVideoEncoderConfig(config);
    131   }
    132   virtual VideoEncoderConfig GetDefaultVideoEncoderConfig() const OVERRIDE {
    133     return delegate_->GetDefaultVideoEncoderConfig();
    134   }
    135   virtual bool SetSoundDevices(
    136       const Device* in_device, const Device* out_device) OVERRIDE {
    137     return delegate_->SetSoundDevices(in_device, out_device);
    138   }
    139   virtual bool GetOutputVolume(int* level) OVERRIDE {
    140     return delegate_->GetOutputVolume(level);
    141   }
    142   virtual bool SetOutputVolume(int level) OVERRIDE {
    143     return delegate_->SetOutputVolume(level);
    144   }
    145   virtual int GetInputLevel() OVERRIDE {
    146     return delegate_->GetInputLevel();
    147   }
    148   virtual bool SetLocalMonitor(bool enable) OVERRIDE {
    149     return delegate_->SetLocalMonitor(enable);
    150   }
    151   virtual const std::vector<AudioCodec>& audio_codecs() OVERRIDE {
    152     return delegate_->audio_codecs();
    153   }
    154   virtual const std::vector<RtpHeaderExtension>&
    155       audio_rtp_header_extensions() OVERRIDE {
    156     return delegate_->audio_rtp_header_extensions();
    157   }
    158   virtual const std::vector<VideoCodec>& video_codecs() OVERRIDE {
    159     return delegate_->video_codecs();
    160   }
    161   virtual const std::vector<RtpHeaderExtension>&
    162       video_rtp_header_extensions() OVERRIDE {
    163     return delegate_->video_rtp_header_extensions();
    164   }
    165   virtual void SetVoiceLogging(int min_sev, const char* filter) OVERRIDE {
    166     delegate_->SetVoiceLogging(min_sev, filter);
    167   }
    168   virtual void SetVideoLogging(int min_sev, const char* filter) OVERRIDE {
    169     delegate_->SetVideoLogging(min_sev, filter);
    170   }
    171   virtual bool StartAecDump(rtc::PlatformFile file) OVERRIDE {
    172     return delegate_->StartAecDump(file);
    173   }
    174   virtual bool RegisterVoiceProcessor(
    175       uint32 ssrc, VoiceProcessor* video_processor,
    176       MediaProcessorDirection direction) OVERRIDE {
    177     return delegate_->RegisterVoiceProcessor(ssrc, video_processor, direction);
    178   }
    179   virtual bool UnregisterVoiceProcessor(
    180       uint32 ssrc, VoiceProcessor* video_processor,
    181       MediaProcessorDirection direction) OVERRIDE {
    182     return delegate_->UnregisterVoiceProcessor(ssrc, video_processor,
    183         direction);
    184   }
    185   virtual VideoFormat GetStartCaptureFormat() const OVERRIDE {
    186     return delegate_->GetStartCaptureFormat();
    187   }
    188   virtual sigslot::repeater2<VideoCapturer*, CaptureState>&
    189       SignalVideoCaptureStateChange() {
    190     return delegate_->SignalVideoCaptureStateChange();
    191   }
    192 
    193  private:
    194   cricket::MediaEngineInterface* delegate_;
    195 };
    196 
    197 // Used by PeerConnectionFactory to create a media engine passed into
    198 // ChannelManager.
    199 MediaEngineInterface* WebRtcMediaEngineFactory::Create(
    200     webrtc::AudioDeviceModule* adm,
    201     webrtc::AudioDeviceModule* adm_sc,
    202     WebRtcVideoEncoderFactory* encoder_factory,
    203     WebRtcVideoDecoderFactory* decoder_factory) {
    204   return new cricket::DelegatingWebRtcMediaEngine(
    205       adm, adm_sc, encoder_factory, decoder_factory);
    206 }
    207 
    208 }  // namespace cricket
    209 
    210 #endif  // !defined(LIBPEERCONNECTION_LIB) &&
    211         // !defined(LIBPEERCONNECTION_IMPLEMENTATION)
    212 
    213 #endif  // TALK_MEDIA_WEBRTCMEDIAENGINE_H_
    214