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-/*
- * libjingle
- * Copyright 2004 Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef TALK_MEDIA_BASE_HYBRIDVIDEOENGINE_H_
-#define TALK_MEDIA_BASE_HYBRIDVIDEOENGINE_H_
-
-#include <string>
-#include <vector>
-
-#include "talk/media/base/codec.h"
-#include "talk/media/base/mediachannel.h"
-#include "talk/media/base/videocapturer.h"
-#include "talk/media/base/videocommon.h"
-#include "webrtc/base/logging.h"
-#include "webrtc/base/sigslotrepeater.h"
-
-namespace cricket {
-
-struct Device;
-struct VideoFormat;
-class HybridVideoEngineInterface;
-class VideoCapturer;
-class VideoFrame;
-class VideoRenderer;
-
-// HybridVideoMediaChannels work with a HybridVideoEngine to combine
-// two unrelated VideoMediaChannel implementations into a single class.
-class HybridVideoMediaChannel : public VideoMediaChannel {
- public:
- HybridVideoMediaChannel(HybridVideoEngineInterface* engine,
- VideoMediaChannel* channel1,
- VideoMediaChannel* channel2);
- virtual ~HybridVideoMediaChannel();
-
- // VideoMediaChannel methods
- virtual void SetInterface(NetworkInterface* iface);
- virtual bool SetOptions(const VideoOptions& options);
- virtual bool GetOptions(VideoOptions* options) const;
- virtual bool AddSendStream(const StreamParams& sp);
- virtual bool RemoveSendStream(uint32 ssrc);
- virtual bool SetRenderer(uint32 ssrc, VideoRenderer* renderer);
- virtual bool SetRender(bool render);
- virtual bool MuteStream(uint32 ssrc, bool muted);
-
- virtual bool SetRecvCodecs(const std::vector<VideoCodec>& codecs);
- virtual bool SetRecvRtpHeaderExtensions(
- const std::vector<RtpHeaderExtension>& extensions);
-
- virtual bool SetSendCodecs(const std::vector<VideoCodec>& codecs);
- virtual bool GetSendCodec(VideoCodec* codec);
- virtual bool SetSendStreamFormat(uint32 ssrc, const VideoFormat& format);
- virtual bool SetSendRtpHeaderExtensions(
- const std::vector<RtpHeaderExtension>& extensions);
- virtual bool SetStartSendBandwidth(int bps);
- virtual bool SetMaxSendBandwidth(int bps);
- virtual bool SetSend(bool send);
-
- virtual bool AddRecvStream(const StreamParams& sp);
- virtual bool RemoveRecvStream(uint32 ssrc);
- virtual bool SetCapturer(uint32 ssrc, VideoCapturer* capturer);
-
- virtual bool SendIntraFrame();
- virtual bool RequestIntraFrame();
-
- virtual bool GetStats(const StatsOptions& options, VideoMediaInfo* info);
-
- virtual void OnPacketReceived(rtc::Buffer* packet,
- const rtc::PacketTime& packet_time);
- virtual void OnRtcpReceived(rtc::Buffer* packet,
- const rtc::PacketTime& packet_time);
- virtual void OnReadyToSend(bool ready);
-
- virtual void UpdateAspectRatio(int ratio_w, int ratio_h);
-
- void OnLocalFrame(VideoCapturer*, const VideoFrame*);
- void OnLocalFrameFormat(VideoCapturer*, const VideoFormat*);
-
- bool sending() const { return sending_; }
-
- private:
- bool SelectActiveChannel(const std::vector<VideoCodec>& codecs);
- void SplitCodecs(const std::vector<VideoCodec>& codecs,
- std::vector<VideoCodec>* codecs1,
- std::vector<VideoCodec>* codecs2);
-
- void OnMediaError(uint32 ssrc, Error error);
-
- HybridVideoEngineInterface* engine_;
- rtc::scoped_ptr<VideoMediaChannel> channel1_;
- rtc::scoped_ptr<VideoMediaChannel> channel2_;
- VideoMediaChannel* active_channel_;
- bool sending_;
-};
-
-// Interface class for HybridVideoChannels to talk to the engine.
-class HybridVideoEngineInterface {
- public:
- virtual ~HybridVideoEngineInterface() {}
- virtual bool HasCodec1(const VideoCodec& codec) = 0;
- virtual bool HasCodec2(const VideoCodec& codec) = 0;
- virtual void OnSendChange1(VideoMediaChannel* channel1, bool send) = 0;
- virtual void OnSendChange2(VideoMediaChannel* channel1, bool send) = 0;
- virtual void OnNewSendResolution(int width, int height) = 0;
-};
-
-// The HybridVideoEngine class combines two unrelated VideoEngine impls
-// into a single class. It creates HybridVideoMediaChannels that also contain
-// a VideoMediaChannel implementation from each engine. Policy is then used
-// during call setup to determine which VideoMediaChannel should be used.
-// Currently, this policy is based on what codec the remote side wants to use.
-template<class VIDEO1, class VIDEO2>
-class HybridVideoEngine : public HybridVideoEngineInterface {
- public:
- HybridVideoEngine() {
- // Unify the codec lists.
- codecs_ = video1_.codecs();
- codecs_.insert(codecs_.end(), video2_.codecs().begin(),
- video2_.codecs().end());
-
- rtp_header_extensions_ = video1_.rtp_header_extensions();
- rtp_header_extensions_.insert(rtp_header_extensions_.end(),
- video2_.rtp_header_extensions().begin(),
- video2_.rtp_header_extensions().end());
-
- SignalCaptureStateChange.repeat(video2_.SignalCaptureStateChange);
- }
-
- bool Init(rtc::Thread* worker_thread) {
- if (!video1_.Init(worker_thread)) {
- LOG(LS_ERROR) << "Failed to init VideoEngine1";
- return false;
- }
- if (!video2_.Init(worker_thread)) {
- LOG(LS_ERROR) << "Failed to init VideoEngine2";
- video1_.Terminate();
- return false;
- }
- return true;
- }
- void Terminate() {
- video1_.Terminate();
- video2_.Terminate();
- }
-
- int GetCapabilities() {
- return (video1_.GetCapabilities() | video2_.GetCapabilities());
- }
- HybridVideoMediaChannel* CreateChannel(VoiceMediaChannel* channel) {
- rtc::scoped_ptr<VideoMediaChannel> channel1(
- video1_.CreateChannel(channel));
- if (!channel1) {
- LOG(LS_ERROR) << "Failed to create VideoMediaChannel1";
- return NULL;
- }
- rtc::scoped_ptr<VideoMediaChannel> channel2(
- video2_.CreateChannel(channel));
- if (!channel2) {
- LOG(LS_ERROR) << "Failed to create VideoMediaChannel2";
- return NULL;
- }
- return new HybridVideoMediaChannel(this,
- channel1.release(), channel2.release());
- }
-
- bool SetOptions(const VideoOptions& options) {
- return video1_.SetOptions(options) && video2_.SetOptions(options);
- }
- bool SetDefaultEncoderConfig(const VideoEncoderConfig& config) {
- VideoEncoderConfig conf = config;
- if (video1_.codecs().size() > 0) {
- conf.max_codec.name = video1_.codecs()[0].name;
- if (!video1_.SetDefaultEncoderConfig(conf)) {
- LOG(LS_ERROR) << "Failed to SetDefaultEncoderConfig for video1";
- return false;
- }
- }
- if (video2_.codecs().size() > 0) {
- conf.max_codec.name = video2_.codecs()[0].name;
- if (!video2_.SetDefaultEncoderConfig(conf)) {
- LOG(LS_ERROR) << "Failed to SetDefaultEncoderConfig for video2";
- return false;
- }
- }
- return true;
- }
- VideoEncoderConfig GetDefaultEncoderConfig() const {
- // This looks pretty strange, but, in practice, it'll do sane things if
- // GetDefaultEncoderConfig is only called after SetDefaultEncoderConfig,
- // since both engines should be essentially equivalent at that point. If it
- // hasn't been called, though, we'll use the first meaningful encoder
- // config, or the config from the second video engine if neither are
- // meaningful.
- VideoEncoderConfig config = video1_.GetDefaultEncoderConfig();
- if (config.max_codec.width != 0) {
- return config;
- } else {
- return video2_.GetDefaultEncoderConfig();
- }
- }
- const std::vector<VideoCodec>& codecs() const {
- return codecs_;
- }
- const std::vector<RtpHeaderExtension>& rtp_header_extensions() const {
- return rtp_header_extensions_;
- }
- void SetLogging(int min_sev, const char* filter) {
- video1_.SetLogging(min_sev, filter);
- video2_.SetLogging(min_sev, filter);
- }
-
- VideoFormat GetStartCaptureFormat() const {
- return video2_.GetStartCaptureFormat();
- }
-
- // TODO(juberti): Remove these functions after we do the capturer refactoring.
- // For now they are set to always use the second engine for capturing, which
- // is convenient given our intended use case.
- bool SetCaptureDevice(const Device* device) {
- return video2_.SetCaptureDevice(device);
- }
- VideoCapturer* GetVideoCapturer() const {
- return video2_.GetVideoCapturer();
- }
- bool SetLocalRenderer(VideoRenderer* renderer) {
- return video2_.SetLocalRenderer(renderer);
- }
- sigslot::repeater2<VideoCapturer*, CaptureState> SignalCaptureStateChange;
-
- virtual bool HasCodec1(const VideoCodec& codec) {
- return HasCodec(video1_, codec);
- }
- virtual bool HasCodec2(const VideoCodec& codec) {
- return HasCodec(video2_, codec);
- }
- template<typename VIDEO>
- bool HasCodec(const VIDEO& engine, const VideoCodec& codec) const {
- for (std::vector<VideoCodec>::const_iterator i = engine.codecs().begin();
- i != engine.codecs().end();
- ++i) {
- if (i->Matches(codec)) {
- return true;
- }
- }
- return false;
- }
- virtual void OnSendChange1(VideoMediaChannel* channel1, bool send) {
- }
- virtual void OnSendChange2(VideoMediaChannel* channel2, bool send) {
- }
- virtual void OnNewSendResolution(int width, int height) {
- }
-
- protected:
- VIDEO1 video1_;
- VIDEO2 video2_;
- std::vector<VideoCodec> codecs_;
- std::vector<RtpHeaderExtension> rtp_header_extensions_;
-};
-
-} // namespace cricket
-
-#endif // TALK_MEDIA_BASE_HYBRIDVIDEOENGINE_H_
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