Move RTCAVFoundationCapturer to webrtc/api/objc.

webrtc/api/objc/avfoundationvideocapturer.h

+/*
+ *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_API_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_
+#define WEBRTC_API_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_
+
+#include "talk/media/base/videocapturer.h"
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/video_frame.h"
+
+#import <AVFoundation/AVFoundation.h>
+
+@class RTCAVFoundationVideoCapturerInternal;
+
+namespace webrtc {
+
+class AVFoundationVideoCapturer : public cricket::VideoCapturer {
+ public:
+  AVFoundationVideoCapturer();
+  ~AVFoundationVideoCapturer();
+
+  cricket::CaptureState Start(const cricket::VideoFormat& format) override;
+  void Stop() override;
+  bool IsRunning() override;
+  bool IsScreencast() const override {
+    return false;
+  }
+  bool GetPreferredFourccs(std::vector<uint32_t> *fourccs) override {
+    fourccs->push_back(cricket::FOURCC_NV12);
+    return true;
+  }
+
+  /** Returns the active capture session. */
+  AVCaptureSession* GetCaptureSession();
+
+  /** Switches the camera being used (either front or back). */
+  void SetUseBackCamera(bool useBackCamera);
+  bool GetUseBackCamera() const;
+
+  /**
+   * Converts the sample buffer into a cricket::CapturedFrame and signals the
+   * frame for capture.
+   */
+  void CaptureSampleBuffer(CMSampleBufferRef sampleBuffer);
+
+ private:
+  /**
+   * Used to signal frame capture on the thread that capturer was started on.
+   */
+  void SignalFrameCapturedOnStartThread(const cricket::CapturedFrame *frame);
+
+  RTCAVFoundationVideoCapturerInternal *_capturer;
+  rtc::Thread *_startThread;  // Set in Start(), unset in Stop().
+};  // AVFoundationVideoCapturer
+
+}  // namespace webrtc
+
+#endif  // TALK_APP_WEBRTC_OBJC_AVFOUNDATION_CAPTURER_H_