blob: 6cce4ececed6854d39603722020ab885c7eaafb9 [file] [log] [blame]
/*
* Copyright (c) 2012 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 "common_video/include/incoming_video_stream.h"
#include <memory>
#include <utility>
#include "absl/types/optional.h"
#include "common_video/video_render_frames.h"
#include "rtc_base/checks.h"
#include "rtc_base/trace_event.h"
namespace webrtc {
IncomingVideoStream::IncomingVideoStream(
TaskQueueFactory* task_queue_factory,
int32_t delay_ms,
rtc::VideoSinkInterface<VideoFrame>* callback)
: render_buffers_(delay_ms),
callback_(callback),
incoming_render_queue_(task_queue_factory->CreateTaskQueue(
"IncomingVideoStream",
TaskQueueFactory::Priority::HIGH)) {}
IncomingVideoStream::~IncomingVideoStream() {
RTC_DCHECK(main_thread_checker_.CalledOnValidThread());
}
void IncomingVideoStream::OnFrame(const VideoFrame& video_frame) {
TRACE_EVENT0("webrtc", "IncomingVideoStream::OnFrame");
RTC_CHECK_RUNS_SERIALIZED(&decoder_race_checker_);
RTC_DCHECK(!incoming_render_queue_.IsCurrent());
// TODO(srte): This struct should be replaced by a lambda with move capture
// when C++14 lambdas are allowed.
struct NewFrameTask {
void operator()() {
RTC_DCHECK(stream->incoming_render_queue_.IsCurrent());
if (stream->render_buffers_.AddFrame(std::move(frame)) == 1)
stream->Dequeue();
}
IncomingVideoStream* stream;
VideoFrame frame;
};
incoming_render_queue_.PostTask(NewFrameTask{this, std::move(video_frame)});
}
void IncomingVideoStream::Dequeue() {
TRACE_EVENT0("webrtc", "IncomingVideoStream::Dequeue");
RTC_DCHECK(incoming_render_queue_.IsCurrent());
absl::optional<VideoFrame> frame_to_render = render_buffers_.FrameToRender();
if (frame_to_render)
callback_->OnFrame(*frame_to_render);
if (render_buffers_.HasPendingFrames()) {
uint32_t wait_time = render_buffers_.TimeToNextFrameRelease();
incoming_render_queue_.PostDelayedTask([this]() { Dequeue(); }, wait_time);
}
}
} // namespace webrtc