blob: 0c2a64372c196607721f06d1a2d2e8c483819e7e [file] [log] [blame]
* 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.
#include <memory>
#include "api/frame_transformer_interface.h"
#include "api/scoped_refptr.h"
#include "api/sequence_checker.h"
#include "api/task_queue/task_queue_base.h"
#include "api/task_queue/task_queue_factory.h"
#include "api/video/video_layers_allocation.h"
#include "rtc_base/synchronization/mutex.h"
namespace webrtc {
class RTPSenderVideo;
// Delegates calls to FrameTransformerInterface to transform frames, and to
// RTPSenderVideo to send the transformed frames. Ensures thread-safe access to
// the sender.
class RTPSenderVideoFrameTransformerDelegate : public TransformedFrameCallback {
RTPSenderVideo* sender,
rtc::scoped_refptr<FrameTransformerInterface> frame_transformer,
uint32_t ssrc,
TaskQueueFactory* send_transport_queue);
void Init();
// Delegates the call to FrameTransformerInterface::TransformFrame.
bool TransformFrame(int payload_type,
absl::optional<VideoCodecType> codec_type,
uint32_t rtp_timestamp,
const EncodedImage& encoded_image,
RTPVideoHeader video_header,
absl::optional<int64_t> expected_retransmission_time_ms);
// Implements TransformedFrameCallback. Can be called on any thread. Posts
// the transformed frame to be sent on the `encoder_queue_`.
void OnTransformedFrame(
std::unique_ptr<TransformableFrameInterface> frame) override;
// Delegates the call to RTPSendVideo::SendVideo on the `encoder_queue_`.
void SendVideo(std::unique_ptr<TransformableFrameInterface> frame) const
// Delegates the call to RTPSendVideo::SetVideoStructureAfterTransformation
// under `sender_lock_`.
void SetVideoStructureUnderLock(
const FrameDependencyStructure* video_structure);
// Delegates the call to
// RTPSendVideo::SetVideoLayersAllocationAfterTransformation under
// `sender_lock_`.
void SetVideoLayersAllocationUnderLock(VideoLayersAllocation allocation);
// Unregisters and releases the `frame_transformer_` reference, and resets
// `sender_` under lock. Called from RTPSenderVideo destructor to prevent the
// `sender_` to dangle.
void Reset();
~RTPSenderVideoFrameTransformerDelegate() override = default;
void EnsureEncoderQueueCreated();
mutable Mutex sender_lock_;
RTPSenderVideo* sender_ RTC_GUARDED_BY(sender_lock_);
rtc::scoped_refptr<FrameTransformerInterface> frame_transformer_;
const uint32_t ssrc_;
TaskQueueBase* encoder_queue_ = nullptr;
TaskQueueFactory* task_queue_factory_;
// Used when the encoded frames arrives without a current task queue. This can
// happen if a hardware encoder was used.
std::unique_ptr<TaskQueueBase, TaskQueueDeleter> owned_encoder_queue_;
} // namespace webrtc