webrtc/modules/video_coding/main/source/video_coding_impl.cc - platform/external/webrtc - Git at Google

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */

 #include "webrtc/common_types.h"
 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
 #include "webrtc/modules/video_coding/codecs/interface/video_codec_interface.h"
 #include "webrtc/modules/video_coding/main/source/encoded_frame.h"
 #include "webrtc/modules/video_coding/main/source/jitter_buffer.h"
 #include "webrtc/modules/video_coding/main/source/packet.h"
 #include "webrtc/modules/video_coding/main/source/video_coding_impl.h"
 #include "webrtc/system_wrappers/include/clock.h"

 namespace webrtc {
 namespace vcm {

 int64_t
 VCMProcessTimer::Period() const {
     return _periodMs;
 }

 int64_t
 VCMProcessTimer::TimeUntilProcess() const {
     const int64_t time_since_process = _clock->TimeInMilliseconds() - _latestMs;
     const int64_t time_until_process = _periodMs - time_since_process;
     return std::max<int64_t>(time_until_process, 0);
 }

 void
 VCMProcessTimer::Processed() {
     _latestMs = _clock->TimeInMilliseconds();
 }
 }  // namespace vcm

 namespace {
 // This wrapper provides a way to modify the callback without the need to expose
 // a register method all the way down to the function calling it.
 class EncodedImageCallbackWrapper : public EncodedImageCallback {
  public:
   EncodedImageCallbackWrapper()
       : cs_(CriticalSectionWrapper::CreateCriticalSection()), callback_(NULL) {}

   virtual ~EncodedImageCallbackWrapper() {}

   void Register(EncodedImageCallback* callback) {
     CriticalSectionScoped cs(cs_.get());
     callback_ = callback;
   }

   // TODO(andresp): Change to void as return value is ignored.
   virtual int32_t Encoded(const EncodedImage& encoded_image,
                           const CodecSpecificInfo* codec_specific_info,
                           const RTPFragmentationHeader* fragmentation) {
     CriticalSectionScoped cs(cs_.get());
     if (callback_)
       return callback_->Encoded(
           encoded_image, codec_specific_info, fragmentation);
     return 0;
   }

  private:
   rtc::scoped_ptr<CriticalSectionWrapper> cs_;
   EncodedImageCallback* callback_ GUARDED_BY(cs_);
 };

 class VideoCodingModuleImpl : public VideoCodingModule {
  public:
   VideoCodingModuleImpl(Clock* clock,
                         EventFactory* event_factory,
                         bool owns_event_factory,
                         VideoEncoderRateObserver* encoder_rate_observer,
                         VCMQMSettingsCallback* qm_settings_callback)
       : VideoCodingModule(),
         sender_(new vcm::VideoSender(clock,
                                      &post_encode_callback_,
                                      encoder_rate_observer,
                                      qm_settings_callback)),
         receiver_(new vcm::VideoReceiver(clock, event_factory)),
         own_event_factory_(owns_event_factory ? event_factory : NULL) {}

   virtual ~VideoCodingModuleImpl() {
     sender_.reset();
     receiver_.reset();
     own_event_factory_.reset();
   }

   int64_t TimeUntilNextProcess() override {
     int64_t sender_time = sender_->TimeUntilNextProcess();
     int64_t receiver_time = receiver_->TimeUntilNextProcess();
     assert(sender_time >= 0);
     assert(receiver_time >= 0);
     return VCM_MIN(sender_time, receiver_time);
   }

   int32_t Process() override {
     int32_t sender_return = sender_->Process();
     int32_t receiver_return = receiver_->Process();
     if (sender_return != VCM_OK)
       return sender_return;
     return receiver_return;
   }

   int32_t RegisterSendCodec(const VideoCodec* sendCodec,
                             uint32_t numberOfCores,
                             uint32_t maxPayloadSize) override {
     return sender_->RegisterSendCodec(sendCodec, numberOfCores, maxPayloadSize);
   }

   const VideoCodec& GetSendCodec() const override {
     return sender_->GetSendCodec();
   }

   // DEPRECATED.
   int32_t SendCodec(VideoCodec* currentSendCodec) const override {
     return sender_->SendCodecBlocking(currentSendCodec);
   }

   // DEPRECATED.
   VideoCodecType SendCodec() const override {
     return sender_->SendCodecBlocking();
   }

   int32_t RegisterExternalEncoder(VideoEncoder* externalEncoder,
                                   uint8_t payloadType,
                                   bool internalSource) override {
     return sender_->RegisterExternalEncoder(
         externalEncoder, payloadType, internalSource);
   }

   int32_t CodecConfigParameters(uint8_t* buffer, int32_t size) override {
     return sender_->CodecConfigParameters(buffer, size);
   }

   int Bitrate(unsigned int* bitrate) const override {
     return sender_->Bitrate(bitrate);
   }

   int FrameRate(unsigned int* framerate) const override {
     return sender_->FrameRate(framerate);
   }

   int32_t SetChannelParameters(uint32_t target_bitrate,  // bits/s.
                                uint8_t lossRate,
                                int64_t rtt) override {
     return sender_->SetChannelParameters(target_bitrate, lossRate, rtt);
   }

   int32_t RegisterTransportCallback(
       VCMPacketizationCallback* transport) override {
     return sender_->RegisterTransportCallback(transport);
   }

   int32_t RegisterSendStatisticsCallback(
       VCMSendStatisticsCallback* sendStats) override {
     return sender_->RegisterSendStatisticsCallback(sendStats);
   }

   int32_t RegisterProtectionCallback(
       VCMProtectionCallback* protection) override {
     return sender_->RegisterProtectionCallback(protection);
   }

   int32_t SetVideoProtection(VCMVideoProtection videoProtection,
                              bool enable) override {
     // TODO(pbos): Remove enable from receive-side protection modes as well.
     if (enable)
       sender_->SetVideoProtection(videoProtection);
     return receiver_->SetVideoProtection(videoProtection, enable);
   }

   int32_t AddVideoFrame(const VideoFrame& videoFrame,
                         const VideoContentMetrics* contentMetrics,
                         const CodecSpecificInfo* codecSpecificInfo) override {
     return sender_->AddVideoFrame(
         videoFrame, contentMetrics, codecSpecificInfo);
   }

   int32_t IntraFrameRequest(int stream_index) override {
     return sender_->IntraFrameRequest(stream_index);
   }

   int32_t EnableFrameDropper(bool enable) override {
     return sender_->EnableFrameDropper(enable);
   }

   void SuspendBelowMinBitrate() override {
     return sender_->SuspendBelowMinBitrate();
   }

   bool VideoSuspended() const override { return sender_->VideoSuspended(); }

   int32_t RegisterReceiveCodec(const VideoCodec* receiveCodec,
                                int32_t numberOfCores,
                                bool requireKeyFrame) override {
     return receiver_->RegisterReceiveCodec(
         receiveCodec, numberOfCores, requireKeyFrame);
   }

   int32_t RegisterExternalDecoder(VideoDecoder* externalDecoder,
                                   uint8_t payloadType,
                                   bool internalRenderTiming) override {
     return receiver_->RegisterExternalDecoder(
         externalDecoder, payloadType, internalRenderTiming);
   }

   int32_t RegisterReceiveCallback(
       VCMReceiveCallback* receiveCallback) override {
     return receiver_->RegisterReceiveCallback(receiveCallback);
   }

   int32_t RegisterReceiveStatisticsCallback(
       VCMReceiveStatisticsCallback* receiveStats) override {
     return receiver_->RegisterReceiveStatisticsCallback(receiveStats);
   }

   int32_t RegisterDecoderTimingCallback(
       VCMDecoderTimingCallback* decoderTiming) override {
     return receiver_->RegisterDecoderTimingCallback(decoderTiming);
   }

   int32_t RegisterFrameTypeCallback(
       VCMFrameTypeCallback* frameTypeCallback) override {
     return receiver_->RegisterFrameTypeCallback(frameTypeCallback);
   }

   int32_t RegisterPacketRequestCallback(
       VCMPacketRequestCallback* callback) override {
     return receiver_->RegisterPacketRequestCallback(callback);
   }

   int RegisterRenderBufferSizeCallback(
       VCMRenderBufferSizeCallback* callback) override {
     return receiver_->RegisterRenderBufferSizeCallback(callback);
   }

   int32_t Decode(uint16_t maxWaitTimeMs) override {
     return receiver_->Decode(maxWaitTimeMs);
   }

   int32_t ResetDecoder() override { return receiver_->ResetDecoder(); }

   int32_t ReceiveCodec(VideoCodec* currentReceiveCodec) const override {
     return receiver_->ReceiveCodec(currentReceiveCodec);
   }

   VideoCodecType ReceiveCodec() const override {
     return receiver_->ReceiveCodec();
   }

   int32_t IncomingPacket(const uint8_t* incomingPayload,
                          size_t payloadLength,
                          const WebRtcRTPHeader& rtpInfo) override {
     return receiver_->IncomingPacket(incomingPayload, payloadLength, rtpInfo);
   }

   int32_t SetMinimumPlayoutDelay(uint32_t minPlayoutDelayMs) override {
     return receiver_->SetMinimumPlayoutDelay(minPlayoutDelayMs);
   }

   int32_t SetRenderDelay(uint32_t timeMS) override {
     return receiver_->SetRenderDelay(timeMS);
   }

   int32_t Delay() const override { return receiver_->Delay(); }

   uint32_t DiscardedPackets() const override {
     return receiver_->DiscardedPackets();
   }

   int SetReceiverRobustnessMode(ReceiverRobustness robustnessMode,
                                 VCMDecodeErrorMode errorMode) override {
     return receiver_->SetReceiverRobustnessMode(robustnessMode, errorMode);
   }

   void SetNackSettings(size_t max_nack_list_size,
                        int max_packet_age_to_nack,
                        int max_incomplete_time_ms) override {
     return receiver_->SetNackSettings(
         max_nack_list_size, max_packet_age_to_nack, max_incomplete_time_ms);
   }

   void SetDecodeErrorMode(VCMDecodeErrorMode decode_error_mode) override {
     return receiver_->SetDecodeErrorMode(decode_error_mode);
   }

   int SetMinReceiverDelay(int desired_delay_ms) override {
     return receiver_->SetMinReceiverDelay(desired_delay_ms);
   }

   int32_t SetReceiveChannelParameters(int64_t rtt) override {
     return receiver_->SetReceiveChannelParameters(rtt);
   }

   void RegisterPreDecodeImageCallback(EncodedImageCallback* observer) override {
     receiver_->RegisterPreDecodeImageCallback(observer);
   }

   void RegisterPostEncodeImageCallback(
       EncodedImageCallback* observer) override {
     post_encode_callback_.Register(observer);
   }

   void TriggerDecoderShutdown() override {
     receiver_->TriggerDecoderShutdown();
   }

  private:
   EncodedImageCallbackWrapper post_encode_callback_;
   // TODO(tommi): Change sender_ and receiver_ to be non pointers
   // (construction is 1 alloc instead of 3).
   rtc::scoped_ptr<vcm::VideoSender> sender_;
   rtc::scoped_ptr<vcm::VideoReceiver> receiver_;
   rtc::scoped_ptr<EventFactory> own_event_factory_;
 };
 }  // namespace

 uint8_t VideoCodingModule::NumberOfCodecs() {
   return VCMCodecDataBase::NumberOfCodecs();
 }

 int32_t VideoCodingModule::Codec(uint8_t listId, VideoCodec* codec) {
   if (codec == NULL) {
     return VCM_PARAMETER_ERROR;
   }
   return VCMCodecDataBase::Codec(listId, codec) ? 0 : -1;
 }

 int32_t VideoCodingModule::Codec(VideoCodecType codecType, VideoCodec* codec) {
   if (codec == NULL) {
     return VCM_PARAMETER_ERROR;
   }
   return VCMCodecDataBase::Codec(codecType, codec) ? 0 : -1;
 }

 VideoCodingModule* VideoCodingModule::Create(
     Clock* clock,
     VideoEncoderRateObserver* encoder_rate_observer,
     VCMQMSettingsCallback* qm_settings_callback) {
   return new VideoCodingModuleImpl(clock, new EventFactoryImpl, true,
                                    encoder_rate_observer, qm_settings_callback);
 }

 VideoCodingModule* VideoCodingModule::Create(
     Clock* clock,
     EventFactory* event_factory) {
   assert(clock);
   assert(event_factory);
   return new VideoCodingModuleImpl(clock, event_factory, false, nullptr,
                                    nullptr);
 }

 void VideoCodingModule::Destroy(VideoCodingModule* module) {
   if (module != NULL) {
     delete static_cast<VideoCodingModuleImpl*>(module);
   }
 }
 }  // namespace webrtc
	/*
	* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
	*
	* Use of this source code is governed by a BSD-style license
	* that can be found in the LICENSE file in the root of the source
	* tree. An additional intellectual property rights grant can be found
	* in the file PATENTS. All contributing project authors may
	* be found in the AUTHORS file in the root of the source tree.
	*/

	#include "webrtc/common_types.h"
	#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
	#include "webrtc/modules/video_coding/codecs/interface/video_codec_interface.h"
	#include "webrtc/modules/video_coding/main/source/encoded_frame.h"
	#include "webrtc/modules/video_coding/main/source/jitter_buffer.h"
	#include "webrtc/modules/video_coding/main/source/packet.h"
	#include "webrtc/modules/video_coding/main/source/video_coding_impl.h"
	#include "webrtc/system_wrappers/include/clock.h"

	namespace webrtc {
	namespace vcm {

	int64_t
	VCMProcessTimer::Period() const {
	return _periodMs;
	}

	int64_t
	VCMProcessTimer::TimeUntilProcess() const {
	const int64_t time_since_process = _clock->TimeInMilliseconds() - _latestMs;
	const int64_t time_until_process = _periodMs - time_since_process;
	return std::max<int64_t>(time_until_process, 0);
	}

	void
	VCMProcessTimer::Processed() {
	_latestMs = _clock->TimeInMilliseconds();
	}
	} // namespace vcm

	namespace {
	// This wrapper provides a way to modify the callback without the need to expose
	// a register method all the way down to the function calling it.
	class EncodedImageCallbackWrapper : public EncodedImageCallback {
	public:
	EncodedImageCallbackWrapper()
	: cs_(CriticalSectionWrapper::CreateCriticalSection()), callback_(NULL) {}

	virtual ~EncodedImageCallbackWrapper() {}

	void Register(EncodedImageCallback* callback) {
	CriticalSectionScoped cs(cs_.get());
	callback_ = callback;
	}

	// TODO(andresp): Change to void as return value is ignored.
	virtual int32_t Encoded(const EncodedImage& encoded_image,
	const CodecSpecificInfo* codec_specific_info,
	const RTPFragmentationHeader* fragmentation) {
	CriticalSectionScoped cs(cs_.get());
	if (callback_)
	return callback_->Encoded(
	encoded_image, codec_specific_info, fragmentation);
	return 0;
	}

	private:
	rtc::scoped_ptr<CriticalSectionWrapper> cs_;
	EncodedImageCallback* callback_ GUARDED_BY(cs_);
	};

	class VideoCodingModuleImpl : public VideoCodingModule {
	public:
	VideoCodingModuleImpl(Clock* clock,
	EventFactory* event_factory,
	bool owns_event_factory,
	VideoEncoderRateObserver* encoder_rate_observer,
	VCMQMSettingsCallback* qm_settings_callback)
	: VideoCodingModule(),
	sender_(new vcm::VideoSender(clock,
	&post_encode_callback_,
	encoder_rate_observer,
	qm_settings_callback)),
	receiver_(new vcm::VideoReceiver(clock, event_factory)),
	own_event_factory_(owns_event_factory ? event_factory : NULL) {}

	virtual ~VideoCodingModuleImpl() {
	sender_.reset();
	receiver_.reset();
	own_event_factory_.reset();
	}

	int64_t TimeUntilNextProcess() override {
	int64_t sender_time = sender_->TimeUntilNextProcess();
	int64_t receiver_time = receiver_->TimeUntilNextProcess();
	assert(sender_time >= 0);
	assert(receiver_time >= 0);
	return VCM_MIN(sender_time, receiver_time);
	}

	int32_t Process() override {
	int32_t sender_return = sender_->Process();
	int32_t receiver_return = receiver_->Process();
	if (sender_return != VCM_OK)
	return sender_return;
	return receiver_return;
	}

	int32_t RegisterSendCodec(const VideoCodec* sendCodec,
	uint32_t numberOfCores,
	uint32_t maxPayloadSize) override {
	return sender_->RegisterSendCodec(sendCodec, numberOfCores, maxPayloadSize);
	}

	const VideoCodec& GetSendCodec() const override {
	return sender_->GetSendCodec();
	}

	// DEPRECATED.
	int32_t SendCodec(VideoCodec* currentSendCodec) const override {
	return sender_->SendCodecBlocking(currentSendCodec);
	}

	// DEPRECATED.
	VideoCodecType SendCodec() const override {
	return sender_->SendCodecBlocking();
	}

	int32_t RegisterExternalEncoder(VideoEncoder* externalEncoder,
	uint8_t payloadType,
	bool internalSource) override {
	return sender_->RegisterExternalEncoder(
	externalEncoder, payloadType, internalSource);
	}

	int32_t CodecConfigParameters(uint8_t* buffer, int32_t size) override {
	return sender_->CodecConfigParameters(buffer, size);
	}

	int Bitrate(unsigned int* bitrate) const override {
	return sender_->Bitrate(bitrate);
	}

	int FrameRate(unsigned int* framerate) const override {
	return sender_->FrameRate(framerate);
	}

	int32_t SetChannelParameters(uint32_t target_bitrate, // bits/s.
	uint8_t lossRate,
	int64_t rtt) override {
	return sender_->SetChannelParameters(target_bitrate, lossRate, rtt);
	}

	int32_t RegisterTransportCallback(
	VCMPacketizationCallback* transport) override {
	return sender_->RegisterTransportCallback(transport);
	}

	int32_t RegisterSendStatisticsCallback(
	VCMSendStatisticsCallback* sendStats) override {
	return sender_->RegisterSendStatisticsCallback(sendStats);
	}

	int32_t RegisterProtectionCallback(
	VCMProtectionCallback* protection) override {
	return sender_->RegisterProtectionCallback(protection);
	}

	int32_t SetVideoProtection(VCMVideoProtection videoProtection,
	bool enable) override {
	// TODO(pbos): Remove enable from receive-side protection modes as well.
	if (enable)
	sender_->SetVideoProtection(videoProtection);
	return receiver_->SetVideoProtection(videoProtection, enable);
	}

	int32_t AddVideoFrame(const VideoFrame& videoFrame,
	const VideoContentMetrics* contentMetrics,
	const CodecSpecificInfo* codecSpecificInfo) override {
	return sender_->AddVideoFrame(
	videoFrame, contentMetrics, codecSpecificInfo);
	}

	int32_t IntraFrameRequest(int stream_index) override {
	return sender_->IntraFrameRequest(stream_index);
	}

	int32_t EnableFrameDropper(bool enable) override {
	return sender_->EnableFrameDropper(enable);
	}

	void SuspendBelowMinBitrate() override {
	return sender_->SuspendBelowMinBitrate();
	}

	bool VideoSuspended() const override { return sender_->VideoSuspended(); }

	int32_t RegisterReceiveCodec(const VideoCodec* receiveCodec,
	int32_t numberOfCores,
	bool requireKeyFrame) override {
	return receiver_->RegisterReceiveCodec(
	receiveCodec, numberOfCores, requireKeyFrame);
	}

	int32_t RegisterExternalDecoder(VideoDecoder* externalDecoder,
	uint8_t payloadType,
	bool internalRenderTiming) override {
	return receiver_->RegisterExternalDecoder(
	externalDecoder, payloadType, internalRenderTiming);
	}

	int32_t RegisterReceiveCallback(
	VCMReceiveCallback* receiveCallback) override {
	return receiver_->RegisterReceiveCallback(receiveCallback);
	}

	int32_t RegisterReceiveStatisticsCallback(
	VCMReceiveStatisticsCallback* receiveStats) override {
	return receiver_->RegisterReceiveStatisticsCallback(receiveStats);
	}

	int32_t RegisterDecoderTimingCallback(
	VCMDecoderTimingCallback* decoderTiming) override {
	return receiver_->RegisterDecoderTimingCallback(decoderTiming);
	}

	int32_t RegisterFrameTypeCallback(
	VCMFrameTypeCallback* frameTypeCallback) override {
	return receiver_->RegisterFrameTypeCallback(frameTypeCallback);
	}

	int32_t RegisterPacketRequestCallback(
	VCMPacketRequestCallback* callback) override {
	return receiver_->RegisterPacketRequestCallback(callback);
	}

	int RegisterRenderBufferSizeCallback(
	VCMRenderBufferSizeCallback* callback) override {
	return receiver_->RegisterRenderBufferSizeCallback(callback);
	}

	int32_t Decode(uint16_t maxWaitTimeMs) override {
	return receiver_->Decode(maxWaitTimeMs);
	}

	int32_t ResetDecoder() override { return receiver_->ResetDecoder(); }

	int32_t ReceiveCodec(VideoCodec* currentReceiveCodec) const override {
	return receiver_->ReceiveCodec(currentReceiveCodec);
	}

	VideoCodecType ReceiveCodec() const override {
	return receiver_->ReceiveCodec();
	}

	int32_t IncomingPacket(const uint8_t* incomingPayload,
	size_t payloadLength,
	const WebRtcRTPHeader& rtpInfo) override {
	return receiver_->IncomingPacket(incomingPayload, payloadLength, rtpInfo);
	}

	int32_t SetMinimumPlayoutDelay(uint32_t minPlayoutDelayMs) override {
	return receiver_->SetMinimumPlayoutDelay(minPlayoutDelayMs);
	}

	int32_t SetRenderDelay(uint32_t timeMS) override {
	return receiver_->SetRenderDelay(timeMS);
	}

	int32_t Delay() const override { return receiver_->Delay(); }

	uint32_t DiscardedPackets() const override {
	return receiver_->DiscardedPackets();
	}

	int SetReceiverRobustnessMode(ReceiverRobustness robustnessMode,
	VCMDecodeErrorMode errorMode) override {
	return receiver_->SetReceiverRobustnessMode(robustnessMode, errorMode);
	}

	void SetNackSettings(size_t max_nack_list_size,
	int max_packet_age_to_nack,
	int max_incomplete_time_ms) override {
	return receiver_->SetNackSettings(
	max_nack_list_size, max_packet_age_to_nack, max_incomplete_time_ms);
	}

	void SetDecodeErrorMode(VCMDecodeErrorMode decode_error_mode) override {
	return receiver_->SetDecodeErrorMode(decode_error_mode);
	}

	int SetMinReceiverDelay(int desired_delay_ms) override {
	return receiver_->SetMinReceiverDelay(desired_delay_ms);
	}

	int32_t SetReceiveChannelParameters(int64_t rtt) override {
	return receiver_->SetReceiveChannelParameters(rtt);
	}

	void RegisterPreDecodeImageCallback(EncodedImageCallback* observer) override {
	receiver_->RegisterPreDecodeImageCallback(observer);
	}

	void RegisterPostEncodeImageCallback(
	EncodedImageCallback* observer) override {
	post_encode_callback_.Register(observer);
	}

	void TriggerDecoderShutdown() override {
	receiver_->TriggerDecoderShutdown();
	}

	private:
	EncodedImageCallbackWrapper post_encode_callback_;
	// TODO(tommi): Change sender_ and receiver_ to be non pointers
	// (construction is 1 alloc instead of 3).
	rtc::scoped_ptr<vcm::VideoSender> sender_;
	rtc::scoped_ptr<vcm::VideoReceiver> receiver_;
	rtc::scoped_ptr<EventFactory> own_event_factory_;
	};
	} // namespace

	uint8_t VideoCodingModule::NumberOfCodecs() {
	return VCMCodecDataBase::NumberOfCodecs();
	}

	int32_t VideoCodingModule::Codec(uint8_t listId, VideoCodec* codec) {
	if (codec == NULL) {
	return VCM_PARAMETER_ERROR;
	}
	return VCMCodecDataBase::Codec(listId, codec) ? 0 : -1;
	}

	int32_t VideoCodingModule::Codec(VideoCodecType codecType, VideoCodec* codec) {
	if (codec == NULL) {
	return VCM_PARAMETER_ERROR;
	}
	return VCMCodecDataBase::Codec(codecType, codec) ? 0 : -1;
	}

	VideoCodingModule* VideoCodingModule::Create(
	Clock* clock,
	VideoEncoderRateObserver* encoder_rate_observer,
	VCMQMSettingsCallback* qm_settings_callback) {
	return new VideoCodingModuleImpl(clock, new EventFactoryImpl, true,
	encoder_rate_observer, qm_settings_callback);
	}

	VideoCodingModule* VideoCodingModule::Create(
	Clock* clock,
	EventFactory* event_factory) {
	assert(clock);
	assert(event_factory);
	return new VideoCodingModuleImpl(clock, event_factory, false, nullptr,
	nullptr);
	}

	void VideoCodingModule::Destroy(VideoCodingModule* module) {
	if (module != NULL) {
	delete static_cast<VideoCodingModuleImpl*>(module);
	}
	}
	} // namespace webrtc