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d797cb6ca7
Bug: webrtc:13931 Change-Id: I93b8ca0ba1ec15bf260236bbc914b41fbb30aa58 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/310680 Commit-Queue: Florent Castelli <orphis@webrtc.org> Reviewed-by: Jeremy Leconte <jleconte@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40376}
105 lines
3.9 KiB
C++
105 lines
3.9 KiB
C++
/*
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* Copyright 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef PC_CHANNEL_INTERFACE_H_
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#define PC_CHANNEL_INTERFACE_H_
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#include <memory>
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#include <string>
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#include <vector>
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#include "absl/strings/string_view.h"
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#include "api/jsep.h"
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#include "api/media_types.h"
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#include "media/base/media_channel.h"
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#include "pc/rtp_transport_internal.h"
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namespace webrtc {
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class Call;
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class VideoBitrateAllocatorFactory;
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} // namespace webrtc
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namespace cricket {
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class VoiceChannel;
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class VideoChannel;
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class MediaContentDescription;
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struct MediaConfig;
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// A Channel is a construct that groups media streams of the same type
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// (audio or video), both outgoing and incoming.
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// When the PeerConnection API is used, a Channel corresponds one to one
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// to an RtpTransceiver.
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// When Unified Plan is used, there can only be at most one outgoing and
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// one incoming stream. With Plan B, there can be more than one.
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// ChannelInterface contains methods common to voice and video channels.
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// As more methods are added to BaseChannel, they should be included in the
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// interface as well.
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// TODO(bugs.webrtc.org/13931): Merge this class into RtpTransceiver.
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class ChannelInterface {
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public:
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virtual ~ChannelInterface() = default;
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virtual cricket::MediaType media_type() const = 0;
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virtual VideoChannel* AsVideoChannel() = 0;
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virtual VoiceChannel* AsVoiceChannel() = 0;
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virtual MediaSendChannelInterface* media_send_channel() = 0;
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// Typecasts of media_channel(). Will cause an exception if the
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// channel is of the wrong type.
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virtual VideoMediaSendChannelInterface* video_media_send_channel() = 0;
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virtual VoiceMediaSendChannelInterface* voice_media_send_channel() = 0;
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virtual MediaReceiveChannelInterface* media_receive_channel() = 0;
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// Typecasts of media_channel(). Will cause an exception if the
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// channel is of the wrong type.
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virtual VideoMediaReceiveChannelInterface* video_media_receive_channel() = 0;
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virtual VoiceMediaReceiveChannelInterface* voice_media_receive_channel() = 0;
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// Returns a string view for the transport name. Fetching the transport name
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// must be done on the network thread only and note that the lifetime of
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// the returned object should be assumed to only be the calling scope.
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// TODO(deadbeef): This is redundant; remove this.
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virtual absl::string_view transport_name() const = 0;
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// TODO(tommi): Change return type to string_view.
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virtual const std::string& mid() const = 0;
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// Enables or disables this channel
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virtual void Enable(bool enable) = 0;
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// Used for latency measurements.
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virtual void SetFirstPacketReceivedCallback(
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std::function<void()> callback) = 0;
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// Channel control
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virtual bool SetLocalContent(const MediaContentDescription* content,
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webrtc::SdpType type,
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std::string& error_desc) = 0;
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virtual bool SetRemoteContent(const MediaContentDescription* content,
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webrtc::SdpType type,
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std::string& error_desc) = 0;
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virtual bool SetPayloadTypeDemuxingEnabled(bool enabled) = 0;
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// Access to the local and remote streams that were set on the channel.
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virtual const std::vector<StreamParams>& local_streams() const = 0;
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virtual const std::vector<StreamParams>& remote_streams() const = 0;
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// Set an RTP level transport.
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// Some examples:
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// * An RtpTransport without encryption.
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// * An SrtpTransport for SDES.
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// * A DtlsSrtpTransport for DTLS-SRTP.
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virtual bool SetRtpTransport(webrtc::RtpTransportInternal* rtp_transport) = 0;
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};
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} // namespace cricket
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#endif // PC_CHANNEL_INTERFACE_H_
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