mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-14 14:20:45 +01:00
b0ea637ec2
Bug: webrtc:12338 Change-Id: Ief89269aa39d0cb6749a1c6cc995ce8830ca327f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/226942 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34564}
81 lines
3.2 KiB
C++
81 lines
3.2 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_SEND_FRAME_TRANSFORMER_DELEGATE_H_
|
|
#define AUDIO_CHANNEL_SEND_FRAME_TRANSFORMER_DELEGATE_H_
|
|
|
|
#include <memory>
|
|
|
|
#include "api/frame_transformer_interface.h"
|
|
#include "api/sequence_checker.h"
|
|
#include "modules/audio_coding/include/audio_coding_module_typedefs.h"
|
|
#include "rtc_base/buffer.h"
|
|
#include "rtc_base/synchronization/mutex.h"
|
|
#include "rtc_base/task_queue.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// Delegates calls to FrameTransformerInterface to transform frames, and to
|
|
// ChannelSend to send the transformed frames using `send_frame_callback_` on
|
|
// the `encoder_queue_`.
|
|
// OnTransformedFrame() can be called from any thread, the delegate ensures
|
|
// thread-safe access to the ChannelSend callback.
|
|
class ChannelSendFrameTransformerDelegate : public TransformedFrameCallback {
|
|
public:
|
|
using SendFrameCallback =
|
|
std::function<int32_t(AudioFrameType frameType,
|
|
uint8_t payloadType,
|
|
uint32_t rtp_timestamp,
|
|
rtc::ArrayView<const uint8_t> payload,
|
|
int64_t absolute_capture_timestamp_ms)>;
|
|
ChannelSendFrameTransformerDelegate(
|
|
SendFrameCallback send_frame_callback,
|
|
rtc::scoped_refptr<FrameTransformerInterface> frame_transformer,
|
|
rtc::TaskQueue* encoder_queue);
|
|
|
|
// Registers `this` as callback for `frame_transformer_`, to get the
|
|
// transformed frames.
|
|
void Init();
|
|
|
|
// Unregisters and releases the `frame_transformer_` reference, and resets
|
|
// `send_frame_callback_` under lock. Called from ChannelSend destructor to
|
|
// prevent running the callback on a dangling channel.
|
|
void Reset();
|
|
|
|
// Delegates the call to FrameTransformerInterface::TransformFrame, to
|
|
// transform the frame asynchronously.
|
|
void Transform(AudioFrameType frame_type,
|
|
uint8_t payload_type,
|
|
uint32_t rtp_timestamp,
|
|
uint32_t rtp_start_timestamp,
|
|
const uint8_t* payload_data,
|
|
size_t payload_size,
|
|
int64_t absolute_capture_timestamp_ms,
|
|
uint32_t ssrc);
|
|
|
|
// Implements TransformedFrameCallback. Can be called on any thread.
|
|
void OnTransformedFrame(
|
|
std::unique_ptr<TransformableFrameInterface> frame) override;
|
|
|
|
// Delegates the call to ChannelSend::SendRtpAudio on the `encoder_queue_`,
|
|
// by calling `send_audio_callback_`.
|
|
void SendFrame(std::unique_ptr<TransformableFrameInterface> frame) const;
|
|
|
|
protected:
|
|
~ChannelSendFrameTransformerDelegate() override = default;
|
|
|
|
private:
|
|
mutable Mutex send_lock_;
|
|
SendFrameCallback send_frame_callback_ RTC_GUARDED_BY(send_lock_);
|
|
rtc::scoped_refptr<FrameTransformerInterface> frame_transformer_;
|
|
rtc::TaskQueue* encoder_queue_ RTC_GUARDED_BY(send_lock_);
|
|
};
|
|
} // namespace webrtc
|
|
#endif // AUDIO_CHANNEL_SEND_FRAME_TRANSFORMER_DELEGATE_H_
|