dvp.h

用于查询PC机上的USB端口是否有设备挂接上

 */
#define DDVPCAPS_READBACKLINE			0x00000010l

/*
 * Allows two gen-locked video streams to share a single video port,
 * where one stream uses the even fields and the other uses the odd
 * fields. Separate parameters (including address, scaling,
 * cropping, etc.) are maintained for both fields.)
 */
#define DDVPCAPS_SHAREABLE			0x00000020l

/*
 * Even fields of video can be automatically discarded.
 */
#define DDVPCAPS_SKIPEVENFIELDS			0x00000040l

/*
 * Odd fields of video can be automatically discarded.
 */
#define DDVPCAPS_SKIPODDFIELDS			0x00000080l

/*
 * Indicates that the device is capable of driving the graphics
 * VSYNC with the video port VSYNC.
 */
#define DDVPCAPS_SYNCMASTER			0x00000100l

/*
 * Indicates that data within the vertical blanking interval can
 * be written to a different surface.
 */
#define DDVPCAPS_VBISURFACE			0x00000200l

/*
 * Indicates that the video port can perform color operations
 * on the incoming data before it is written to the frame buffer.
 */
#define DDVPCAPS_COLORCONTROL			0x00000400l

/*
 * Indicates that the video port can accept VBI data in a different
 * width or format than the regular video data.
 */
#define DDVPCAPS_OVERSAMPLEDVBI			0x00000800l

/*
 * Indicates that the video port can write data directly to system memory
 */
#define DDVPCAPS_SYSTEMMEMORY			0x00001000l

/*
 * Indicates that the VBI and video portions of the video stream can
 * be controlled by an independent processes.
 */
#define DDVPCAPS_VBIANDVIDEOINDEPENDENT		0x00002000l

/*
 * Indicates that the video port contains high quality hardware
 * de-interlacing hardware that should be used instead of the
 * bob/weave algorithms.
 */
#define DDVPCAPS_HARDWAREDEINTERLACE		0x00004000l


/****************************************************************************
 *
 * VIDEOPORT DDVIDEOPORTDESC FX
 *
 ****************************************************************************/

/*
 * Limited cropping is available to crop out the vertical interval data.
 */
#define DDVPFX_CROPTOPDATA			0x00000001l

/*
 * Incoming data can be cropped in the X direction before it is written
 * to the surface.
 */
#define DDVPFX_CROPX				0x00000002l

/*
 * Incoming data can be cropped in the Y direction before it is written
 * to the surface.
 */
#define DDVPFX_CROPY				0x00000004l

/*
 * Supports interleaving interlaced fields in memory.
 */
#define DDVPFX_INTERLEAVE			0x00000008l

/*
 * Supports mirroring left to right as the video data is written
 * into the frame buffer.
 */
#define DDVPFX_MIRRORLEFTRIGHT			0x00000010l

/*
 * Supports mirroring top to bottom as the video data is written
 * into the frame buffer.
 */
#define DDVPFX_MIRRORUPDOWN			0x00000020l

/*
 * Data can be arbitrarily shrunk in the X direction before it
 * is written to the surface.
 */
#define DDVPFX_PRESHRINKX			0x00000040l

/*
 * Data can be arbitrarily shrunk in the Y direction before it
 * is written to the surface.
 */
#define DDVPFX_PRESHRINKY			0x00000080l

/*
 * Data can be binary shrunk (1/2, 1/4, 1/8, etc.) in the X
 * direction before it is written to the surface.
 */
#define DDVPFX_PRESHRINKXB			0x00000100l

/*
 * Data can be binary shrunk (1/2, 1/4, 1/8, etc.) in the Y
 * direction before it is written to the surface.
 */
#define DDVPFX_PRESHRINKYB			0x00000200l

/*
 * Data can be shrunk in increments of 1/x in the X direction
 * (where X is specified in the DDVIDEOPORTCAPS.dwPreshrinkXStep)
 * before it is written to the surface.
 */
#define DDVPFX_PRESHRINKXS			0x00000400l

/*
 * Data can be shrunk in increments of 1/x in the Y direction
 * (where X is specified in the DDVIDEOPORTCAPS.dwPreshrinkYStep)
 * before it is written to the surface.
 */
#define DDVPFX_PRESHRINKYS			0x00000800l

/*
 * Data can be arbitrarily stretched in the X direction before
 * it is written to the surface.
 */
#define DDVPFX_PRESTRETCHX			0x00001000l

/*
 * Data can be arbitrarily stretched in the Y direction before
 * it is written to the surface.
 */
#define DDVPFX_PRESTRETCHY			0x00002000l

/*
 * Data can be integer stretched in the X direction before it is
 * written to the surface.
 */
#define DDVPFX_PRESTRETCHXN			0x00004000l

/*
 * Data can be integer stretched in the Y direction before it is
 * written to the surface.
 */
#define DDVPFX_PRESTRETCHYN			0x00008000l

/*
 * Indicates that data within the vertical blanking interval can
 * be converted independently of the remaining video data.
 */
#define DDVPFX_VBICONVERT			0x00010000l

/*
 * Indicates that scaling can be disabled for data within the
 * vertical blanking interval.
 */
#define DDVPFX_VBINOSCALE			0x00020000l

/*
 * Indicates that the video data can ignore the left and right
 * cropping coordinates when cropping oversampled VBI data.
 */
#define DDVPFX_IGNOREVBIXCROP			0x00040000l

/*
 * Indicates that interleaving can be disabled for data within the
 * vertical blanking interval.
 */
#define DDVPFX_VBINOINTERLEAVE			0x00080000l


/****************************************************************************
 *
 * VIDEOPORT DDVIDEOPORTINFO FLAGS
 *
 ****************************************************************************/

/*
 * Perform automatic flipping.   Auto-flipping is performed between
 * the overlay surface that was attached to the video port using
 * IDirectDrawVideoPort::AttachSurface and the overlay surfaces that
 * are attached to the surface via the IDirectDrawSurface::AttachSurface
 * method.  The flip order is the order in which the overlay surfaces
 * were. attached.
 */
#define DDVP_AUTOFLIP				0x00000001l

/*
 * Perform conversion using the ddpfOutputFormat information.
 */
#define DDVP_CONVERT				0x00000002l

/*
 * Perform cropping using the specified rectangle.
 */
#define DDVP_CROP				0x00000004l

/*
 * Indicates that interlaced fields should be interleaved in memory.
 */
#define DDVP_INTERLEAVE				0x00000008l

/*
 * Indicates that the data should be mirrored left to right as it's
 * written into the frame buffer.
 */
#define DDVP_MIRRORLEFTRIGHT			0x00000010l

/*
 * Indicates that the data should be mirrored top to bottom as it's
 * written into the frame buffer.
 */
#define DDVP_MIRRORUPDOWN			0x00000020l

/*
 * Perform pre-scaling/zooming based on the pre-scale parameters.
 */
#define DDVP_PRESCALE				0x00000040l

/*
 * Ignore input of even fields.
 */
#define DDVP_SKIPEVENFIELDS			0x00000080l

/*
 * Ignore input of odd fields.
 */
#define DDVP_SKIPODDFIELDS			0x00000100l

/*
 * Drive the graphics VSYNCs using the video port VYSNCs.
 */
#define DDVP_SYNCMASTER				0x00000200l

/*
 * The ddpfVBIOutputFormatFormat member contains data that should be used
 * to convert the data within the vertical blanking interval.
 */
#define DDVP_VBICONVERT				0x00000400l

/*
 * Indicates that data within the vertical blanking interval
 * should not be scaled.
 */
#define DDVP_VBINOSCALE				0x00000800l

/*
 * Indicates that these bob/weave decisions should not be
 * overriden by other interfaces.
 */
#define DDVP_OVERRIDEBOBWEAVE			0x00001000l

/*
 * Indicates that the video data should ignore the left and right
 * cropping coordinates when cropping the VBI data.
 */
#define DDVP_IGNOREVBIXCROP			0x00002000l

/*
 * Indicates that interleaving can be disabled for data within the
 * vertical blanking interval.
 */
#define DDVP_VBINOINTERLEAVE			0x00004000l

/*
 * Indicates that the video port should use the hardware
 * de-interlacing hardware.
 */
#define DDVP_HARDWAREDEINTERLACE		0x00008000l

/****************************************************************************
 *
 * DIRIRECTDRAWVIDEOPORT GETINPUTFORMAT/GETOUTPUTFORMAT FLAGS
 *
 ****************************************************************************/

/*
 * Return formats for the video data
 */
#define DDVPFORMAT_VIDEO			0x00000001l

/*
 * Return formats for the VBI data
 */
#define DDVPFORMAT_VBI				0x00000002l

/****************************************************************************
 *
 * DIRIRECTDRAWVIDEOPORT SETTARGETSURFACE FLAGS
 *
 ****************************************************************************/

/*
 * Surface should receive video data (and VBI data if a surface
 * is not explicitly attached for that purpose)
 */
#define DDVPTARGET_VIDEO			0x00000001l

/*
 * Surface should receive VBI data
 */
#define DDVPTARGET_VBI				0x00000002l


/****************************************************************************
 *
 * DIRIRECTDRAWVIDEOPORT WAITFORSYNC FLAGS
 *
 ****************************************************************************/

/*
 * Waits until the beginning of the next VSYNC
 */
#define DDVPWAIT_BEGIN				0x00000001l

/*
 * Waits until the end of the next/current VSYNC
 */
#define DDVPWAIT_END				0x00000002l

/*
 * Waits until the beginning of the specified line
 */
#define DDVPWAIT_LINE				0x00000003l

/****************************************************************************
 *
 * DIRECTDRAWVIDEOPORT FLIP FLAGS
 *
 ****************************************************************************/

/*
 * Flips the normal video surface
 */
#define DDVPFLIP_VIDEO				0x00000001l

/*
 * Flips the VBI surface
 */
#define DDVPFLIP_VBI				0x00000002l

/****************************************************************************
 *
 * DIRIRECTDRAWVIDEOPORT GETVIDEOSIGNALSTATUS VALUES
 *
 ****************************************************************************/

/*
 * No video signal is present at the video port
 */
#define DDVPSQ_NOSIGNAL				0x00000001l

/*
 * A valid video signal is present at the video port
 */
#define DDVPSQ_SIGNALOK				0x00000002l

/****************************************************************************
 *
 * VIDEOPORTBANDWIDTH Flags
 *
 ****************************************************************************/

/*
 * The specified height/width refer to the size of the video port data
 * written into memory, after prescaling has occured.
 */
#define DDVPB_VIDEOPORT				0x00000001l

/*
 * The specified height/width refer to the source size of the overlay.
 */
#define DDVPB_OVERLAY				0x00000002l

/*
 * This is a query for the device to return which caps this device requires.
 */
#define DDVPB_TYPE				0x00000004l

/****************************************************************************
 *
 * VIDEOPORTBANDWIDTH Caps
 *
 ****************************************************************************/

/*
 * The bandwidth for this device is dependant on the overlay source size.
 */
#define DDVPBCAPS_SOURCE			0x00000001l

/*
 * The bandwidth for this device is dependant on the overlay destination
 * size.
 */
#define DDVPBCAPS_DESTINATION			0x00000002l

/****************************************************************************
 *
 * DDVIDEOPORTCONTAINER CreateVideoPort flags
 *
 ****************************************************************************/

/*
 * The process only wants to control the VBI portion of the video stream.
 */
#define DDVPCREATE_VBIONLY			0x00000001l

/*
 * The process only wants to control the non-VBI (video) portion of
 * the video stream.
 */
#define DDVPCREATE_VIDEOONLY			0x00000002l

/****************************************************************************
 *
 * DDVIDEOPORTSTATUS flags
 *
 ****************************************************************************/

/*
 * The video port interface is only controlling the VBI portion of the
 * video stream
 */
#define DDVPSTATUS_VBIONLY			0x00000001l

/*
 * The video port interface is only controlling the video portion of the
 * video stream
 */
#define DDVPSTATUS_VIDEOONLY			0x00000002l


#ifdef __cplusplus
};
#endif

#endif