videoio.h

mgcp协议源代码。支持多种编码：g711

/*
 * videoio.h
 *
 * Classes to support streaming video input (grabbing) and output.
 *
 * Portable Windows Library
 *
 * Copyright (c) 1993-2000 Equivalence Pty. Ltd.
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is Portable Windows Library.
 *
 * The Initial Developer of the Original Code is Equivalence Pty. Ltd.
 *
 * Contributor(s): ______________________________________.
 *
 * $Log: videoio.h,v $
 * Revision 1.1  2000/07/26 02:40:29  robertj
 * Added video I/O devices.
 *
 */


#ifndef _PVIDEOIO

#include <linux/videodev.h>     /* change this to "videodev2.h" for v4l2 */


#include "../../videoio.h"
  public:
    virtual BOOL SetVideoFormat(VideoFormat videoFormat);
    virtual unsigned GetNumChannels() const;
    virtual BOOL SetChannel(unsigned channelNumber);
    virtual BOOL SetColourFormat(ColourFormat colourFormat);
    virtual BOOL SetFrameRate(unsigned rate);
    virtual BOOL GetFrameSizeLimits(unsigned & minWidth, unsigned & minHeight, unsigned & maxWidth, unsigned & maxHeight) const;
    virtual BOOL SetFrameSize(unsigned width, unsigned height);
  protected:
    void ClearMapping();

    int    videoFd;
    struct video_capability videoCapability;
    int    canMap;  // -1 = don't know, 0 = no, 1 = yes
    int    pixelSize;
    BYTE * videoBuffer;
    PINDEX videoFrameSize;
    int    currentFrame;
    struct video_mbuf frame;
    struct video_mmap frameBuffer[2];
};


#endif