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+/*
+ * Copyright 2022 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.
+ */
+
+#ifndef MEDIA_BASE_MEDIA_CHANNEL_IMPL_H_
+#define MEDIA_BASE_MEDIA_CHANNEL_IMPL_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <functional>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "api/audio_options.h"
+#include "api/call/audio_sink.h"
+#include "api/call/transport.h"
+#include "api/crypto/frame_decryptor_interface.h"
+#include "api/crypto/frame_encryptor_interface.h"
+#include "api/frame_transformer_interface.h"
+#include "api/media_types.h"
+#include "api/rtc_error.h"
+#include "api/rtp_parameters.h"
+#include "api/rtp_sender_interface.h"
+#include "api/scoped_refptr.h"
+#include "api/sequence_checker.h"
+#include "api/task_queue/pending_task_safety_flag.h"
+#include "api/task_queue/task_queue_base.h"
+#include "api/transport/rtp/rtp_source.h"
+#include "api/video/recordable_encoded_frame.h"
+#include "api/video/video_frame.h"
+#include "api/video/video_sink_interface.h"
+#include "api/video/video_source_interface.h"
+#include "api/video_codecs/video_encoder_factory.h"
+#include "media/base/codec.h"
+#include "media/base/media_channel.h"
+#include "media/base/stream_params.h"
+#include "modules/rtp_rtcp/source/rtp_packet_received.h"
+#include "rtc_base/async_packet_socket.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/copy_on_write_buffer.h"
+#include "rtc_base/dscp.h"
+#include "rtc_base/logging.h"
+#include "rtc_base/network/sent_packet.h"
+#include "rtc_base/network_route.h"
+#include "rtc_base/socket.h"
+#include "rtc_base/thread_annotations.h"
+// This file contains the base classes for classes that implement
+// the MediaChannel interfaces.
+// These implementation classes used to be the exposed interface names,
+// but this is in the process of being changed.
+// TODO(bugs.webrtc.org/13931): Consider removing these classes.
+
+// The target
+
+namespace cricket {
+
+class VoiceMediaChannel;
+class VideoMediaChannel;
+
+class MediaChannel : public MediaSendChannelInterface,
+ public MediaReceiveChannelInterface {
+ public:
+ explicit MediaChannel(webrtc::TaskQueueBase* network_thread,
+ bool enable_dscp = false);
+ virtual ~MediaChannel();
+
+ // Downcasting to the subclasses.
+ virtual VideoMediaChannel* AsVideoChannel() {
+ RTC_CHECK_NOTREACHED();
+ return nullptr;
+ }
+
+ virtual VoiceMediaChannel* AsVoiceChannel() {
+ RTC_CHECK_NOTREACHED();
+ return nullptr;
+ }
+
+ // Must declare the methods inherited from the base interface template,
+ // even when abstract, to tell the compiler that all instances of the name
+ // referred to by subclasses of this share the same implementation.
+ cricket::MediaType media_type() const override = 0;
+ void OnPacketReceived(const webrtc::RtpPacketReceived& packet) override = 0;
+ void OnPacketSent(const rtc::SentPacket& sent_packet) override = 0;
+ void OnReadyToSend(bool ready) override = 0;
+ void OnNetworkRouteChanged(absl::string_view transport_name,
+ const rtc::NetworkRoute& network_route) override =
+ 0;
+
+ // Sets the abstract interface class for sending RTP/RTCP data.
+ virtual void SetInterface(MediaChannelNetworkInterface* iface);
+ // Returns the absolute sendtime extension id value from media channel.
+ virtual int GetRtpSendTimeExtnId() const;
+ // Base method to send packet using MediaChannelNetworkInterface.
+ bool SendPacket(rtc::CopyOnWriteBuffer* packet,
+ const rtc::PacketOptions& options);
+
+ bool SendRtcp(rtc::CopyOnWriteBuffer* packet,
+ const rtc::PacketOptions& options);
+
+ int SetOption(MediaChannelNetworkInterface::SocketType type,
+ rtc::Socket::Option opt,
+ int option);
+
+ // Corresponds to the SDP attribute extmap-allow-mixed, see RFC8285.
+ // Set to true if it's allowed to mix one- and two-byte RTP header extensions
+ // in the same stream. The setter and getter must only be called from
+ // worker_thread.
+ void SetExtmapAllowMixed(bool extmap_allow_mixed) override;
+ bool ExtmapAllowMixed() const override;
+
+ // Returns `true` if a non-null MediaChannelNetworkInterface pointer is held.
+ // Must be called on the network thread.
+ bool HasNetworkInterface() const;
+
+ void SetFrameEncryptor(uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameEncryptorInterface>
+ frame_encryptor) override;
+ void SetFrameDecryptor(uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameDecryptorInterface>
+ frame_decryptor) override;
+
+ void SetEncoderToPacketizerFrameTransformer(
+ uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameTransformerInterface> frame_transformer)
+ override;
+ void SetDepacketizerToDecoderFrameTransformer(
+ uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameTransformerInterface> frame_transformer)
+ override;
+
+ protected:
+ int SetOptionLocked(MediaChannelNetworkInterface::SocketType type,
+ rtc::Socket::Option opt,
+ int option) RTC_RUN_ON(network_thread_);
+
+ bool DscpEnabled() const;
+
+ // This is the DSCP value used for both RTP and RTCP channels if DSCP is
+ // enabled. It can be changed at any time via `SetPreferredDscp`.
+ rtc::DiffServCodePoint PreferredDscp() const;
+ void SetPreferredDscp(rtc::DiffServCodePoint new_dscp);
+
+ rtc::scoped_refptr<webrtc::PendingTaskSafetyFlag> network_safety();
+
+ // Utility implementation for derived classes (video/voice) that applies
+ // the packet options and passes the data onwards to `SendPacket`.
+ void SendRtp(const uint8_t* data,
+ size_t len,
+ const webrtc::PacketOptions& options);
+
+ void SendRtcp(const uint8_t* data, size_t len);
+
+ private:
+ // Apply the preferred DSCP setting to the underlying network interface RTP
+ // and RTCP channels. If DSCP is disabled, then apply the default DSCP value.
+ void UpdateDscp() RTC_RUN_ON(network_thread_);
+
+ bool DoSendPacket(rtc::CopyOnWriteBuffer* packet,
+ bool rtcp,
+ const rtc::PacketOptions& options);
+
+ const bool enable_dscp_;
+ const rtc::scoped_refptr<webrtc::PendingTaskSafetyFlag> network_safety_
+ RTC_PT_GUARDED_BY(network_thread_);
+ webrtc::TaskQueueBase* const network_thread_;
+ MediaChannelNetworkInterface* network_interface_
+ RTC_GUARDED_BY(network_thread_) = nullptr;
+ rtc::DiffServCodePoint preferred_dscp_ RTC_GUARDED_BY(network_thread_) =
+ rtc::DSCP_DEFAULT;
+ bool extmap_allow_mixed_ = false;
+};
+
+// Base class for implementation classes
+
+class VideoMediaChannel : public MediaChannel,
+ public VideoMediaSendChannelInterface,
+ public VideoMediaReceiveChannelInterface {
+ public:
+ explicit VideoMediaChannel(webrtc::TaskQueueBase* network_thread,
+ bool enable_dscp = false)
+ : MediaChannel(network_thread, enable_dscp) {}
+ ~VideoMediaChannel() override {}
+
+ // Downcasting to the implemented interfaces.
+ VideoMediaSendChannelInterface* AsVideoSendChannel() override { return this; }
+ VoiceMediaSendChannelInterface* AsVoiceSendChannel() override {
+ RTC_CHECK_NOTREACHED();
+ return nullptr;
+ }
+
+ VideoMediaReceiveChannelInterface* AsVideoReceiveChannel() override {
+ return this;
+ }
+ cricket::MediaType media_type() const override;
+
+ // Downcasting to the subclasses.
+ VideoMediaChannel* AsVideoChannel() override { return this; }
+
+ void SetExtmapAllowMixed(bool mixed) override {
+ MediaChannel::SetExtmapAllowMixed(mixed);
+ }
+ bool ExtmapAllowMixed() const override {
+ return MediaChannel::ExtmapAllowMixed();
+ }
+ // This fills the "bitrate parts" (rtx, video bitrate) of the
+ // BandwidthEstimationInfo, since that part that isn't possible to get
+ // through webrtc::Call::GetStats, as they are statistics of the send
+ // streams.
+ // TODO(holmer): We should change this so that either BWE graphs doesn't
+ // need access to bitrates of the streams, or change the (RTC)StatsCollector
+ // so that it's getting the send stream stats separately by calling
+ // GetStats(), and merges with BandwidthEstimationInfo by itself.
+ void FillBitrateInfo(BandwidthEstimationInfo* bwe_info) override = 0;
+ // Gets quality stats for the channel.
+ virtual bool GetSendStats(VideoMediaSendInfo* info) = 0;
+ virtual bool GetReceiveStats(VideoMediaReceiveInfo* info) = 0;
+ // Enable network condition based codec switching.
+ void SetVideoCodecSwitchingEnabled(bool enabled) override;
+
+ private:
+ // Functions not implemented on this interface
+ bool GetStats(VideoMediaSendInfo* info) override {
+ RTC_CHECK_NOTREACHED();
+ return false;
+ }
+ bool GetStats(VideoMediaReceiveInfo* info) override {
+ RTC_CHECK_NOTREACHED();
+ return false;
+ }
+};
+
+// Base class for implementation classes
+class VoiceMediaChannel : public MediaChannel,
+ public VoiceMediaSendChannelInterface,
+ public VoiceMediaReceiveChannelInterface {
+ public:
+ MediaType media_type() const override;
+ VoiceMediaChannel(webrtc::TaskQueueBase* network_thread,
+ bool enable_dscp = false)
+ : MediaChannel(network_thread, enable_dscp) {}
+ ~VoiceMediaChannel() override {}
+
+ // Downcasting to the implemented interfaces.
+ VoiceMediaSendChannelInterface* AsVoiceSendChannel() override { return this; }
+
+ VoiceMediaReceiveChannelInterface* AsVoiceReceiveChannel() override {
+ return this;
+ }
+
+ VoiceMediaChannel* AsVoiceChannel() override { return this; }
+
+ VideoMediaSendChannelInterface* AsVideoSendChannel() override {
+ RTC_CHECK_NOTREACHED();
+ return nullptr;
+ }
+
+ void SetExtmapAllowMixed(bool mixed) override {
+ MediaChannel::SetExtmapAllowMixed(mixed);
+ }
+ bool ExtmapAllowMixed() const override {
+ return MediaChannel::ExtmapAllowMixed();
+ }
+
+ // Gets quality stats for the channel.
+ virtual bool GetSendStats(VoiceMediaSendInfo* info) = 0;
+ virtual bool GetReceiveStats(VoiceMediaReceiveInfo* info,
+ bool get_and_clear_legacy_stats) = 0;
+
+ private:
+ // Functions not implemented on this interface
+ bool GetStats(VoiceMediaSendInfo* info) override {
+ RTC_CHECK_NOTREACHED();
+ return false;
+ }
+ bool GetStats(VoiceMediaReceiveInfo* info,
+ bool get_and_clear_legacy_stats) override {
+ RTC_CHECK_NOTREACHED();
+ return false;
+ }
+};
+
+// The externally exposed objects that support the Send and Receive interfaces.
+// These dispatch their functions to the underlying MediaChannel objects.
+
+class VoiceMediaSendChannel : public VoiceMediaSendChannelInterface {
+ public:
+ explicit VoiceMediaSendChannel(VoiceMediaChannel* impl) : impl_(impl) {}
+ virtual ~VoiceMediaSendChannel() {}
+ VoiceMediaSendChannelInterface* AsVoiceSendChannel() override { return this; }
+ VideoMediaSendChannelInterface* AsVideoSendChannel() override {
+ RTC_CHECK_NOTREACHED();
+ return nullptr;
+ }
+
+ // Implementation of MediaBaseChannelInterface
+ cricket::MediaType media_type() const override { return MEDIA_TYPE_AUDIO; }
+ void OnPacketReceived(const webrtc::RtpPacketReceived& packet) override {
+ impl()->OnPacketReceived(packet);
+ }
+ void OnPacketSent(const rtc::SentPacket& sent_packet) override {
+ impl()->OnPacketSent(sent_packet);
+ }
+ void OnReadyToSend(bool ready) override { impl()->OnReadyToSend(ready); }
+ void OnNetworkRouteChanged(absl::string_view transport_name,
+ const rtc::NetworkRoute& network_route) override {
+ impl()->OnNetworkRouteChanged(transport_name, network_route);
+ }
+ void SetExtmapAllowMixed(bool extmap_allow_mixed) override {
+ impl()->SetExtmapAllowMixed(extmap_allow_mixed);
+ }
+ bool ExtmapAllowMixed() const override { return impl()->ExtmapAllowMixed(); }
+ // Implementation of MediaSendChannelInterface
+ bool AddSendStream(const StreamParams& sp) override {
+ return impl()->AddSendStream(sp);
+ }
+ bool RemoveSendStream(uint32_t ssrc) override {
+ return impl()->RemoveSendStream(ssrc);
+ }
+ void SetFrameEncryptor(uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameEncryptorInterface>
+ frame_encryptor) override {
+ impl()->SetFrameEncryptor(ssrc, frame_encryptor);
+ }
+ webrtc::RTCError SetRtpSendParameters(
+ uint32_t ssrc,
+ const webrtc::RtpParameters& parameters,
+ webrtc::SetParametersCallback callback = nullptr) override {
+ return impl()->SetRtpSendParameters(ssrc, parameters, std::move(callback));
+ }
+
+ void SetEncoderToPacketizerFrameTransformer(
+ uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameTransformerInterface> frame_transformer)
+ override {
+ return impl()->SetEncoderToPacketizerFrameTransformer(ssrc,
+ frame_transformer);
+ }
+ void SetEncoderSelector(uint32_t ssrc,
+ webrtc::VideoEncoderFactory::EncoderSelectorInterface*
+ encoder_selector) override {
+ impl()->SetEncoderSelector(ssrc, encoder_selector);
+ }
+ webrtc::RtpParameters GetRtpSendParameters(uint32_t ssrc) const override {
+ return impl()->GetRtpSendParameters(ssrc);
+ }
+ // Implementation of VoiceMediaSendChannel
+ bool SetSendParameters(const AudioSendParameters& params) override {
+ return impl()->SetSendParameters(params);
+ }
+ void SetSend(bool send) override { return impl()->SetSend(send); }
+ bool SetAudioSend(uint32_t ssrc,
+ bool enable,
+ const AudioOptions* options,
+ AudioSource* source) override {
+ return impl()->SetAudioSend(ssrc, enable, options, source);
+ }
+ bool CanInsertDtmf() override { return impl()->CanInsertDtmf(); }
+ bool InsertDtmf(uint32_t ssrc, int event, int duration) override {
+ return impl()->InsertDtmf(ssrc, event, duration);
+ }
+ bool GetStats(VoiceMediaSendInfo* info) override {
+ return impl_->GetSendStats(info);
+ }
+
+ private:
+ VoiceMediaSendChannelInterface* impl() { return impl_; }
+ const VoiceMediaSendChannelInterface* impl() const { return impl_; }
+ VoiceMediaChannel* impl_;
+};
+
+class VoiceMediaReceiveChannel : public VoiceMediaReceiveChannelInterface {
+ public:
+ explicit VoiceMediaReceiveChannel(VoiceMediaChannel* impl) : impl_(impl) {}
+ virtual ~VoiceMediaReceiveChannel() {}
+ // Implementation of MediaBaseChannelInterface
+ cricket::MediaType media_type() const override { return MEDIA_TYPE_AUDIO; }
+ void OnPacketReceived(const webrtc::RtpPacketReceived& packet) override {
+ impl()->OnPacketReceived(packet);
+ }
+ void OnPacketSent(const rtc::SentPacket& sent_packet) override {
+ impl()->OnPacketSent(sent_packet);
+ }
+ void OnReadyToSend(bool ready) override { impl()->OnReadyToSend(ready); }
+ void OnNetworkRouteChanged(absl::string_view transport_name,
+ const rtc::NetworkRoute& network_route) override {
+ impl()->OnNetworkRouteChanged(transport_name, network_route);
+ }
+ void SetExtmapAllowMixed(bool extmap_allow_mixed) override {
+ impl()->SetExtmapAllowMixed(extmap_allow_mixed);
+ }
+ bool ExtmapAllowMixed() const override { return impl()->ExtmapAllowMixed(); }
+ // Implementation of Delayable
+ bool SetBaseMinimumPlayoutDelayMs(uint32_t ssrc, int delay_ms) override {
+ return impl()->SetBaseMinimumPlayoutDelayMs(ssrc, delay_ms);
+ }
+ absl::optional<int> GetBaseMinimumPlayoutDelayMs(
+ uint32_t ssrc) const override {
+ return impl()->GetBaseMinimumPlayoutDelayMs(ssrc);
+ }
+ // Implementation of MediaReceiveChannelInterface
+ bool AddRecvStream(const StreamParams& sp) override {
+ return impl()->AddRecvStream(sp);
+ }
+ bool RemoveRecvStream(uint32_t ssrc) override {
+ return impl()->RemoveRecvStream(ssrc);
+ }
+ void ResetUnsignaledRecvStream() override {
+ return impl()->ResetUnsignaledRecvStream();
+ }
+ absl::optional<uint32_t> GetUnsignaledSsrc() const override {
+ return impl()->GetUnsignaledSsrc();
+ }
+ void OnDemuxerCriteriaUpdatePending() override {
+ impl()->OnDemuxerCriteriaUpdatePending();
+ }
+ void OnDemuxerCriteriaUpdateComplete() override {
+ impl()->OnDemuxerCriteriaUpdateComplete();
+ }
+ void SetFrameDecryptor(uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameDecryptorInterface>
+ frame_decryptor) override {
+ impl()->SetFrameDecryptor(ssrc, frame_decryptor);
+ }
+ void SetDepacketizerToDecoderFrameTransformer(
+ uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameTransformerInterface> frame_transformer)
+ override {
+ impl()->SetDepacketizerToDecoderFrameTransformer(ssrc, frame_transformer);
+ }
+ // Implementation of VoiceMediaReceiveChannelInterface
+ bool SetRecvParameters(const AudioRecvParameters& params) override {
+ return impl()->SetRecvParameters(params);
+ }
+ webrtc::RtpParameters GetRtpReceiveParameters(uint32_t ssrc) const override {
+ return impl()->GetRtpReceiveParameters(ssrc);
+ }
+ std::vector<webrtc::RtpSource> GetSources(uint32_t ssrc) const override {
+ return impl()->GetSources(ssrc);
+ }
+ webrtc::RtpParameters GetDefaultRtpReceiveParameters() const override {
+ return impl()->GetDefaultRtpReceiveParameters();
+ }
+ void SetPlayout(bool playout) override { return impl()->SetPlayout(playout); }
+ bool SetOutputVolume(uint32_t ssrc, double volume) override {
+ return impl()->SetOutputVolume(ssrc, volume);
+ }
+ bool SetDefaultOutputVolume(double volume) override {
+ return impl()->SetDefaultOutputVolume(volume);
+ }
+ void SetRawAudioSink(
+ uint32_t ssrc,
+ std::unique_ptr<webrtc::AudioSinkInterface> sink) override {
+ return impl()->SetRawAudioSink(ssrc, std::move(sink));
+ }
+ void SetDefaultRawAudioSink(
+ std::unique_ptr<webrtc::AudioSinkInterface> sink) override {
+ return impl()->SetDefaultRawAudioSink(std::move(sink));
+ }
+ bool GetStats(VoiceMediaReceiveInfo* info, bool reset_legacy) override {
+ return impl_->GetReceiveStats(info, reset_legacy);
+ }
+
+ private:
+ VoiceMediaReceiveChannelInterface* impl() { return impl_; }
+ const VoiceMediaReceiveChannelInterface* impl() const { return impl_; }
+ VoiceMediaChannel* impl_;
+};
+
+class VideoMediaSendChannel : public VideoMediaSendChannelInterface {
+ public:
+ explicit VideoMediaSendChannel(VideoMediaChannel* impl) : impl_(impl) {}
+
+ VideoMediaSendChannelInterface* AsVideoSendChannel() override { return this; }
+ VoiceMediaSendChannelInterface* AsVoiceSendChannel() override {
+ RTC_CHECK_NOTREACHED();
+ return nullptr;
+ }
+
+ // Implementation of MediaBaseChannelInterface
+ cricket::MediaType media_type() const override { return MEDIA_TYPE_VIDEO; }
+ void OnPacketReceived(const webrtc::RtpPacketReceived& packet) override {
+ impl()->OnPacketReceived(packet);
+ }
+ void OnPacketSent(const rtc::SentPacket& sent_packet) override {
+ impl()->OnPacketSent(sent_packet);
+ }
+ void OnReadyToSend(bool ready) override { impl()->OnReadyToSend(ready); }
+ void OnNetworkRouteChanged(absl::string_view transport_name,
+ const rtc::NetworkRoute& network_route) override {
+ impl()->OnNetworkRouteChanged(transport_name, network_route);
+ }
+ void SetExtmapAllowMixed(bool extmap_allow_mixed) override {
+ impl()->SetExtmapAllowMixed(extmap_allow_mixed);
+ }
+ bool ExtmapAllowMixed() const override { return impl()->ExtmapAllowMixed(); }
+ // Implementation of MediaSendChannelInterface
+ bool AddSendStream(const StreamParams& sp) override {
+ return impl()->AddSendStream(sp);
+ }
+ bool RemoveSendStream(uint32_t ssrc) override {
+ return impl()->RemoveSendStream(ssrc);
+ }
+ void SetFrameEncryptor(uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameEncryptorInterface>
+ frame_encryptor) override {
+ impl()->SetFrameEncryptor(ssrc, frame_encryptor);
+ }
+ webrtc::RTCError SetRtpSendParameters(
+ uint32_t ssrc,
+ const webrtc::RtpParameters& parameters,
+ webrtc::SetParametersCallback callback = nullptr) override {
+ return impl()->SetRtpSendParameters(ssrc, parameters, std::move(callback));
+ }
+
+ void SetEncoderToPacketizerFrameTransformer(
+ uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameTransformerInterface> frame_transformer)
+ override {
+ return impl()->SetEncoderToPacketizerFrameTransformer(ssrc,
+ frame_transformer);
+ }
+ void SetEncoderSelector(uint32_t ssrc,
+ webrtc::VideoEncoderFactory::EncoderSelectorInterface*
+ encoder_selector) override {
+ impl()->SetEncoderSelector(ssrc, encoder_selector);
+ }
+ webrtc::RtpParameters GetRtpSendParameters(uint32_t ssrc) const override {
+ return impl()->GetRtpSendParameters(ssrc);
+ }
+ // Implementation of VideoMediaSendChannelInterface
+ bool SetSendParameters(const VideoSendParameters& params) override {
+ return impl()->SetSendParameters(params);
+ }
+ bool GetSendCodec(VideoCodec* send_codec) override {
+ return impl()->GetSendCodec(send_codec);
+ }
+ bool SetSend(bool send) override { return impl()->SetSend(send); }
+ bool SetVideoSend(
+ uint32_t ssrc,
+ const VideoOptions* options,
+ rtc::VideoSourceInterface<webrtc::VideoFrame>* source) override {
+ return impl()->SetVideoSend(ssrc, options, source);
+ }
+ void GenerateSendKeyFrame(uint32_t ssrc,
+ const std::vector<std::string>& rids) override {
+ return impl()->GenerateSendKeyFrame(ssrc, rids);
+ }
+ void SetVideoCodecSwitchingEnabled(bool enabled) override {
+ return impl()->SetVideoCodecSwitchingEnabled(enabled);
+ }
+ bool GetStats(VideoMediaSendInfo* info) override {
+ return impl_->GetSendStats(info);
+ }
+ void FillBitrateInfo(BandwidthEstimationInfo* bwe_info) override {
+ return impl_->FillBitrateInfo(bwe_info);
+ }
+
+ private:
+ VideoMediaSendChannelInterface* impl() { return impl_; }
+ const VideoMediaSendChannelInterface* impl() const { return impl_; }
+ VideoMediaChannel* const impl_;
+};
+
+class VideoMediaReceiveChannel : public VideoMediaReceiveChannelInterface {
+ public:
+ explicit VideoMediaReceiveChannel(VideoMediaChannel* impl) : impl_(impl) {}
+ // Implementation of MediaBaseChannelInterface
+ cricket::MediaType media_type() const override { return MEDIA_TYPE_VIDEO; }
+ void OnPacketReceived(const webrtc::RtpPacketReceived& packet) override {
+ impl()->OnPacketReceived(packet);
+ }
+ void OnPacketSent(const rtc::SentPacket& sent_packet) override {
+ impl()->OnPacketSent(sent_packet);
+ }
+ void OnReadyToSend(bool ready) override { impl()->OnReadyToSend(ready); }
+ void OnNetworkRouteChanged(absl::string_view transport_name,
+ const rtc::NetworkRoute& network_route) override {
+ impl()->OnNetworkRouteChanged(transport_name, network_route);
+ }
+ void SetExtmapAllowMixed(bool extmap_allow_mixed) override {
+ impl()->SetExtmapAllowMixed(extmap_allow_mixed);
+ }
+ bool ExtmapAllowMixed() const override { return impl()->ExtmapAllowMixed(); }
+ // Implementation of Delayable
+ bool SetBaseMinimumPlayoutDelayMs(uint32_t ssrc, int delay_ms) override {
+ return impl()->SetBaseMinimumPlayoutDelayMs(ssrc, delay_ms);
+ }
+ absl::optional<int> GetBaseMinimumPlayoutDelayMs(
+ uint32_t ssrc) const override {
+ return impl()->GetBaseMinimumPlayoutDelayMs(ssrc);
+ }
+ // Implementation of MediaReceiveChannelInterface
+ VideoMediaReceiveChannelInterface* AsVideoReceiveChannel() override {
+ return this;
+ }
+ bool AddRecvStream(const StreamParams& sp) override {
+ return impl()->AddRecvStream(sp);
+ }
+ bool RemoveRecvStream(uint32_t ssrc) override {
+ return impl()->RemoveRecvStream(ssrc);
+ }
+ void ResetUnsignaledRecvStream() override {
+ return impl()->ResetUnsignaledRecvStream();
+ }
+ absl::optional<uint32_t> GetUnsignaledSsrc() const override {
+ return impl()->GetUnsignaledSsrc();
+ }
+ void OnDemuxerCriteriaUpdatePending() override {
+ impl()->OnDemuxerCriteriaUpdatePending();
+ }
+ void OnDemuxerCriteriaUpdateComplete() override {
+ impl()->OnDemuxerCriteriaUpdateComplete();
+ }
+ void SetFrameDecryptor(uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameDecryptorInterface>
+ frame_decryptor) override {
+ impl()->SetFrameDecryptor(ssrc, frame_decryptor);
+ }
+ void SetDepacketizerToDecoderFrameTransformer(
+ uint32_t ssrc,
+ rtc::scoped_refptr<webrtc::FrameTransformerInterface> frame_transformer)
+ override {
+ impl()->SetDepacketizerToDecoderFrameTransformer(ssrc, frame_transformer);
+ }
+ // Implementation on videoMediaReceiveChannelInterface
+ bool SetRecvParameters(const VideoRecvParameters& params) override {
+ return impl()->SetRecvParameters(params);
+ }
+ webrtc::RtpParameters GetRtpReceiveParameters(uint32_t ssrc) const override {
+ return impl()->GetRtpReceiveParameters(ssrc);
+ }
+ webrtc::RtpParameters GetDefaultRtpReceiveParameters() const override {
+ return impl()->GetDefaultRtpReceiveParameters();
+ }
+ bool SetSink(uint32_t ssrc,
+ rtc::VideoSinkInterface<webrtc::VideoFrame>* sink) override {
+ return impl()->SetSink(ssrc, sink);
+ }
+ void SetDefaultSink(
+ rtc::VideoSinkInterface<webrtc::VideoFrame>* sink) override {
+ return impl()->SetDefaultSink(sink);
+ }
+ void RequestRecvKeyFrame(uint32_t ssrc) override {
+ return impl()->RequestRecvKeyFrame(ssrc);
+ }
+ std::vector<webrtc::RtpSource> GetSources(uint32_t ssrc) const override {
+ return impl()->GetSources(ssrc);
+ }
+ // Set recordable encoded frame callback for `ssrc`
+ void SetRecordableEncodedFrameCallback(
+ uint32_t ssrc,
+ std::function<void(const webrtc::RecordableEncodedFrame&)> callback)
+ override {
+ return impl()->SetRecordableEncodedFrameCallback(ssrc, std::move(callback));
+ }
+ // Clear recordable encoded frame callback for `ssrc`
+ void ClearRecordableEncodedFrameCallback(uint32_t ssrc) override {
+ impl()->ClearRecordableEncodedFrameCallback(ssrc);
+ }
+ bool GetStats(VideoMediaReceiveInfo* info) override {
+ return impl_->GetReceiveStats(info);
+ }
+
+ private:
+ VideoMediaReceiveChannelInterface* impl() { return impl_; }
+ const VideoMediaReceiveChannelInterface* impl() const { return impl_; }
+ VideoMediaChannel* const impl_;
+};
+
+} // namespace cricket
+
+#endif // MEDIA_BASE_MEDIA_CHANNEL_IMPL_H_