| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // 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/timed_canvas_draw_listener.h" |
| |
| #include <memory> |
| #include "third_party/blink/public/platform/task_type.h" |
| #include "third_party/blink/renderer/core/execution_context/execution_context.h" |
| #include "third_party/blink/renderer/modules/mediacapturefromelement/canvas_capture_handler.h" |
| #include "third_party/skia/include/core/SkImage.h" |
| |
| namespace blink { |
| |
| TimedCanvasDrawListener::TimedCanvasDrawListener( |
| std::unique_ptr<CanvasCaptureHandler> handler, |
| double frame_rate, |
| ExecutionContext* context) |
| : OnRequestCanvasDrawListener(std::move(handler)), |
| frame_interval_(base::TimeDelta::FromSecondsD(1 / frame_rate)), |
| request_frame_timer_(context->GetTaskRunner(TaskType::kInternalMedia), |
| this, |
| &TimedCanvasDrawListener::RequestFrameTimerFired) {} |
| |
| TimedCanvasDrawListener::~TimedCanvasDrawListener() = default; |
| |
| // static |
| TimedCanvasDrawListener* TimedCanvasDrawListener::Create( |
| std::unique_ptr<CanvasCaptureHandler> handler, |
| double frame_rate, |
| ExecutionContext* context) { |
| TimedCanvasDrawListener* listener = |
| MakeGarbageCollected<TimedCanvasDrawListener>(std::move(handler), |
| frame_rate, context); |
| listener->request_frame_timer_.StartRepeating(listener->frame_interval_, |
| FROM_HERE); |
| return listener; |
| } |
| |
| void TimedCanvasDrawListener::RequestFrameTimerFired(TimerBase*) { |
| // TODO(emircan): Measure the jitter and log, see crbug.com/589974. |
| frame_capture_requested_ = true; |
| } |
| |
| void TimedCanvasDrawListener::Trace(Visitor* visitor) const { |
| visitor->Trace(request_frame_timer_); |
| OnRequestCanvasDrawListener::Trace(visitor); |
| } |
| |
| } // namespace blink |
