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content / renderer / pepper / pepper_platform_video_capture.h [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_
#define CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_
#include <memory>
#include <string>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/thread_checker.h"
#include "base/time/time.h"
#include "media/capture/video_capture_types.h"
#include "third_party/blink/public/common/media/video_capture.h"
namespace media {
class VideoFrame;
} // namespace media
namespace content {
class PepperMediaDeviceManager;
class PepperVideoCaptureHost;
// This object must only be used on the thread it's constructed on.
class PepperPlatformVideoCapture {
public:
PepperPlatformVideoCapture(int render_frame_id,
const std::string& device_id,
PepperVideoCaptureHost* handler);
PepperPlatformVideoCapture(const PepperPlatformVideoCapture&) = delete;
PepperPlatformVideoCapture& operator=(const PepperPlatformVideoCapture&) =
delete;
virtual ~PepperPlatformVideoCapture();
// Detaches the event handler and stops sending notifications to it.
void DetachEventHandler();
void StartCapture(const media::VideoCaptureParams& params);
void StopCapture();
private:
void OnDeviceOpened(int request_id, bool succeeded, const std::string& label);
void OnStateUpdate(blink::VideoCaptureState state);
void OnFrameReady(scoped_refptr<media::VideoFrame> video_frame,
base::TimeTicks estimated_capture_time);
// Can return NULL if the RenderFrame referenced by |render_frame_id_| has
// gone away.
PepperMediaDeviceManager* GetMediaDeviceManager();
const int render_frame_id_;
const std::string device_id_;
std::string label_;
base::UnguessableToken session_id_;
base::OnceClosure release_device_cb_;
base::OnceClosure stop_capture_cb_;
raw_ptr<PepperVideoCaptureHost> handler_;
// Whether we have a pending request to open a device. We have to make sure
// there isn't any pending request before this object goes away.
bool pending_open_device_;
int pending_open_device_id_;
base::ThreadChecker thread_checker_;
base::WeakPtrFactory<PepperPlatformVideoCapture> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_