74 lines
2.8 KiB
C++
74 lines
2.8 KiB
C++
/*
|
|
* Copyright (c) 2020 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 AUDIO_CHANNEL_RECEIVE_FRAME_TRANSFORMER_DELEGATE_H_
|
|
#define AUDIO_CHANNEL_RECEIVE_FRAME_TRANSFORMER_DELEGATE_H_
|
|
|
|
#include <memory>
|
|
|
|
#include "api/frame_transformer_interface.h"
|
|
#include "rtc_base/synchronization/sequence_checker.h"
|
|
#include "rtc_base/task_queue.h"
|
|
#include "rtc_base/thread.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// Delegates calls to FrameTransformerInterface to transform frames, and to
|
|
// ChannelReceive to receive the transformed frames using the
|
|
// |receive_frame_callback_| on the |channel_receive_thread_|.
|
|
class ChannelReceiveFrameTransformerDelegate : public TransformedFrameCallback {
|
|
public:
|
|
using ReceiveFrameCallback =
|
|
std::function<void(rtc::ArrayView<const uint8_t> packet,
|
|
const RTPHeader& header)>;
|
|
ChannelReceiveFrameTransformerDelegate(
|
|
ReceiveFrameCallback receive_frame_callback,
|
|
rtc::scoped_refptr<FrameTransformerInterface> frame_transformer,
|
|
rtc::Thread* channel_receive_thread);
|
|
|
|
// Registers |this| as callback for |frame_transformer_|, to get the
|
|
// transformed frames.
|
|
void Init();
|
|
|
|
// Unregisters and releases the |frame_transformer_| reference, and resets
|
|
// |receive_frame_callback_| on |channel_receive_thread_|. Called from
|
|
// ChannelReceive destructor to prevent running the callback on a dangling
|
|
// channel.
|
|
void Reset();
|
|
|
|
// Delegates the call to FrameTransformerInterface::Transform, to transform
|
|
// the frame asynchronously.
|
|
void Transform(rtc::ArrayView<const uint8_t> packet,
|
|
const RTPHeader& header,
|
|
uint32_t ssrc);
|
|
|
|
// Implements TransformedFrameCallback. Can be called on any thread.
|
|
void OnTransformedFrame(
|
|
std::unique_ptr<TransformableFrameInterface> frame) override;
|
|
|
|
// Delegates the call to ChannelReceive::OnReceivedPayloadData on the
|
|
// |channel_receive_thread_|, by calling |receive_frame_callback_|.
|
|
void ReceiveFrame(std::unique_ptr<TransformableFrameInterface> frame) const;
|
|
|
|
protected:
|
|
~ChannelReceiveFrameTransformerDelegate() override = default;
|
|
|
|
private:
|
|
SequenceChecker sequence_checker_;
|
|
ReceiveFrameCallback receive_frame_callback_
|
|
RTC_GUARDED_BY(sequence_checker_);
|
|
rtc::scoped_refptr<FrameTransformerInterface> frame_transformer_
|
|
RTC_GUARDED_BY(sequence_checker_);
|
|
rtc::Thread* channel_receive_thread_;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
#endif // AUDIO_CHANNEL_RECEIVE_FRAME_TRANSFORMER_DELEGATE_H_
|