[WIP] Move media/capture to device/capture

media/capture/video/mac/video_capture_device_mac.h

-// Copyright (c) 2012 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.
-
-// MacOSX implementation of generic VideoCaptureDevice, using AVFoundation as
-// native capture API. AVFoundation is available in versions 10.7 (Lion) and
-// later.
-
-#ifndef MEDIA_CAPTURE_VIDEO_MAC_VIDEO_CAPTURE_DEVICE_MAC_H_
-#define MEDIA_CAPTURE_VIDEO_MAC_VIDEO_CAPTURE_DEVICE_MAC_H_
-
-#import <Foundation/Foundation.h>
-#include <stdint.h>
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/mac/scoped_nsobject.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "media/base/video_capture_types.h"
-#include "media/capture/video/video_capture_device.h"
-
-@class VideoCaptureDeviceAVFoundation;
-
-namespace base {
-class SingleThreadTaskRunner;
-}
-
-namespace tracked_objects {
-class Location;
-}  // namespace tracked_objects
-
-// Small class to bundle device name and connection type into a dictionary.
-CAPTURE_EXPORT
-@interface DeviceNameAndTransportType : NSObject {
- @private
-  base::scoped_nsobject<NSString> deviceName_;
-  // The transport type of the device (USB, PCI, etc), values are defined in
-  // <IOKit/audio/IOAudioTypes.h> as kIOAudioDeviceTransportType*.
-  int32_t transportType_;
-}
-
-- (id)initWithName:(NSString*)name transportType:(int32_t)transportType;
-
-- (NSString*)deviceName;
-- (int32_t)transportType;
-@end
-
-namespace media {
-
-// Called by VideoCaptureManager to open, close and start, stop Mac video
-// capture devices.
-class VideoCaptureDeviceMac : public VideoCaptureDevice {
- public:
-  explicit VideoCaptureDeviceMac(const Name& device_name);
-  ~VideoCaptureDeviceMac() override;
-
-  // VideoCaptureDevice implementation.
-  void AllocateAndStart(
-      const VideoCaptureParams& params,
-      std::unique_ptr<VideoCaptureDevice::Client> client) override;
-  void StopAndDeAllocate() override;
-  void TakePhoto(TakePhotoCallback callback) override;
-
-  bool Init(VideoCaptureDevice::Name::CaptureApiType capture_api_type);
-
-  // Called to deliver captured video frames.  It's safe to call this method
-  // from any thread, including those controlled by AVFoundation.
-  void ReceiveFrame(const uint8_t* video_frame,
-                    int video_frame_length,
-                    const VideoCaptureFormat& frame_format,
-                    int aspect_numerator,
-                    int aspect_denominator,
-                    base::TimeDelta timestamp);
-
-  // Callbacks with the result of a still image capture, or in case of error,
-  // respectively. It's safe to call these methods from any thread.
-  void OnPhotoTaken(const uint8_t* image_data,
-                    size_t image_length,
-                    const std::string& mime_type);
-  void OnPhotoError();
-
-  // Forwarder to VideoCaptureDevice::Client::OnError().
-  void ReceiveError(const tracked_objects::Location& from_here,
-                    const std::string& reason);
-
-  // Forwarder to VideoCaptureDevice::Client::OnLog().
-  void LogMessage(const std::string& message);
-
- private:
-  void SetErrorState(const tracked_objects::Location& from_here,
-                     const std::string& reason);
-  bool UpdateCaptureResolution();
-
-  // Flag indicating the internal state.
-  enum InternalState { kNotInitialized, kIdle, kCapturing, kError };
-
-  Name device_name_;
-  std::unique_ptr<VideoCaptureDevice::Client> client_;
-
-  VideoCaptureFormat capture_format_;
-
-  // Only read and write state_ from inside this loop.
-  const scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
-  InternalState state_;
-
-  base::scoped_nsobject<VideoCaptureDeviceAVFoundation> capture_device_;
-
-  // To hold on to the TakePhotoCallback while the picture is being taken.
-  std::unique_ptr<TakePhotoCallback> photo_callback_;
-
-  // Used with Bind and PostTask to ensure that methods aren't called after the
-  // VideoCaptureDeviceMac is destroyed.
-  // NOTE: Weak pointers must be invalidated before all other member variables.
-  base::WeakPtrFactory<VideoCaptureDeviceMac> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(VideoCaptureDeviceMac);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_CAPTURE_VIDEO_MAC_VIDEO_CAPTURE_DEVICE_MAC_H_