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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/mediastream/video_renderer_algorithm_wrapper.h"
namespace blink {
VideoRendererAlgorithmWrapper::VideoRendererAlgorithmWrapper(
const media::TimeSource::WallClockTimeCB& wall_clock_time_cb,
media::MediaLog* media_log)
: wall_clock_time_cb_(wall_clock_time_cb),
media_log_(media_log),
renderer_algorithm_(RendererAlgorithm::kDefault) {
default_rendering_frame_buffer_ =
std::make_unique<media::VideoRendererAlgorithm>(wall_clock_time_cb_,
media_log_);
}
scoped_refptr<media::VideoFrame> VideoRendererAlgorithmWrapper::Render(
base::TimeTicks deadline_min,
base::TimeTicks deadline_max,
size_t* frames_dropped) {
return renderer_algorithm_ == RendererAlgorithm::kDefault
? default_rendering_frame_buffer_->Render(
deadline_min, deadline_max, frames_dropped)
: low_latency_rendering_frame_buffer_->Render(
deadline_min, deadline_max, frames_dropped);
}
void VideoRendererAlgorithmWrapper::EnqueueFrame(
scoped_refptr<media::VideoFrame> frame) {
DCHECK(frame);
if (renderer_algorithm_ == RendererAlgorithm::kDefault &&
frame->metadata().maximum_composition_delay_in_frames) {
default_rendering_frame_buffer_.release();
low_latency_rendering_frame_buffer_ =
std::make_unique<LowLatencyVideoRendererAlgorithm>(media_log_);
renderer_algorithm_ = RendererAlgorithm::kLowLatency;
}
return renderer_algorithm_ == RendererAlgorithm::kDefault
? default_rendering_frame_buffer_->EnqueueFrame(frame)
: low_latency_rendering_frame_buffer_->EnqueueFrame(frame);
}
void VideoRendererAlgorithmWrapper::Reset(
media::VideoRendererAlgorithm::ResetFlag reset_flag) {
return renderer_algorithm_ == RendererAlgorithm::kDefault
? default_rendering_frame_buffer_->Reset(reset_flag)
: low_latency_rendering_frame_buffer_->Reset();
}
bool VideoRendererAlgorithmWrapper::NeedsReferenceTime() const {
return renderer_algorithm_ == RendererAlgorithm::kDefault;
}
} // namespace blink
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