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// Copyright 2015 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/mediacapturefromelement/canvas_capture_media_stream_track.h"
#include <memory>
#include "third_party/blink/renderer/core/html/canvas/html_canvas_element.h"
#include "third_party/blink/renderer/modules/mediacapturefromelement/auto_canvas_draw_listener.h"
#include "third_party/blink/renderer/modules/mediacapturefromelement/on_request_canvas_draw_listener.h"
#include "third_party/blink/renderer/modules/mediacapturefromelement/timed_canvas_draw_listener.h"
#include "third_party/blink/renderer/modules/mediastream/media_stream_utils.h"
#include "third_party/blink/renderer/modules/mediastream/media_stream_video_track.h"
namespace blink {
HTMLCanvasElement* CanvasCaptureMediaStreamTrack::canvas() const {
return canvas_element_.Get();
}
void CanvasCaptureMediaStreamTrack::requestFrame() {
draw_listener_->RequestFrame();
}
CanvasCaptureMediaStreamTrack* CanvasCaptureMediaStreamTrack::clone(
ExecutionContext* script_state) {
MediaStreamComponent* cloned_component = Component()->Clone();
CanvasCaptureMediaStreamTrack* cloned_track =
MakeGarbageCollected<CanvasCaptureMediaStreamTrack>(*this,
cloned_component);
return cloned_track;
}
void CanvasCaptureMediaStreamTrack::Trace(Visitor* visitor) const {
visitor->Trace(canvas_element_);
visitor->Trace(draw_listener_);
MediaStreamTrackImpl::Trace(visitor);
}
CanvasCaptureMediaStreamTrack::CanvasCaptureMediaStreamTrack(
const CanvasCaptureMediaStreamTrack& track,
MediaStreamComponent* component)
: MediaStreamTrackImpl(track.canvas_element_->GetExecutionContext(),
component),
canvas_element_(track.canvas_element_),
draw_listener_(track.draw_listener_) {
canvas_element_->AddListener(draw_listener_.Get());
}
CanvasCaptureMediaStreamTrack::CanvasCaptureMediaStreamTrack(
MediaStreamComponent* component,
HTMLCanvasElement* element,
ExecutionContext* context,
std::unique_ptr<CanvasCaptureHandler> handler)
: MediaStreamTrackImpl(context, component), canvas_element_(element) {
draw_listener_ =
MakeGarbageCollected<AutoCanvasDrawListener>(std::move(handler));
canvas_element_->AddListener(draw_listener_.Get());
}
CanvasCaptureMediaStreamTrack::CanvasCaptureMediaStreamTrack(
MediaStreamComponent* component,
HTMLCanvasElement* element,
ExecutionContext* context,
std::unique_ptr<CanvasCaptureHandler> handler,
double frame_rate)
: MediaStreamTrackImpl(context, component), canvas_element_(element) {
if (frame_rate == 0) {
draw_listener_ =
MakeGarbageCollected<OnRequestCanvasDrawListener>(std::move(handler));
} else {
draw_listener_ = TimedCanvasDrawListener::Create(std::move(handler),
frame_rate, context);
}
canvas_element_->AddListener(draw_listener_.Get());
}
} // namespace blink
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