src/media/video/capture/win/sink_input_pin_win.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.

// Implement a DirectShow input pin used for receiving captured frames from
// a DirectShow Capture filter.

#ifndef MEDIA_VIDEO_CAPTURE_WIN_SINK_INPUT_PIN_WIN_H_
#define MEDIA_VIDEO_CAPTURE_WIN_SINK_INPUT_PIN_WIN_H_

#include "media/video/capture/video_capture_device.h"
#include "media/video/capture/video_capture_types.h"
#include "media/video/capture/win/pin_base_win.h"
#include "media/video/capture/win/sink_filter_win.h"

namespace media {

// Const used for converting Seconds to REFERENCE_TIME.
extern const REFERENCE_TIME kSecondsToReferenceTime;

// Input pin of the SinkFilter.
class SinkInputPin : public PinBase {
 public:
  SinkInputPin(IBaseFilter* filter, SinkFilterObserver* observer);
  virtual ~SinkInputPin();

  void SetRequestedMediaCapability(const VideoCaptureCapability& capability);
  // Returns the capability that is negotiated when this
  // pin is connected to a media filter.
  const VideoCaptureCapability& ResultingCapability();

  // Implement PinBase.
  virtual bool IsMediaTypeValid(const AM_MEDIA_TYPE* media_type);
  virtual bool GetValidMediaType(int index, AM_MEDIA_TYPE* media_type);

  STDMETHOD(Receive)(IMediaSample* media_sample);

 private:
  VideoCaptureCapability requested_capability_;
  VideoCaptureCapability resulting_capability_;
  SinkFilterObserver* observer_;

  DISALLOW_IMPLICIT_CONSTRUCTORS(SinkInputPin);
};

}  // namespace media

#endif  // MEDIA_VIDEO_CAPTURE_WIN_SINK_INPUT_PIN_WIN_H_