intel_xvmc.c

显驱动 Intel英特尔G45G43G41G35G33G31G965Q963Q965GM965系列显卡最新X.Org驱动2.4.0版For Linux

Status XvMCSyncSurface(Display *display, XvMCSurface *surface)
{
    Status ret;
    int stat = 0;

    if (!display || !surface)
	return XvMCBadSurface;

    do {
        ret = XvMCGetSurfaceStatus(display, surface, &stat);
    } while (!ret && (stat & XVMC_RENDERING));

    return ret;
}

/*
 * Function: XvMCFlushSurface
 * Description:
 *   This function commits pending rendering requests to ensure that they
 *   wll be completed in a finite amount of time.
 * Arguments:
 *   display - Connection to X server
 *   surface - Surface to flush
 * Returns: Status
 */
Status XvMCFlushSurface(Display * display, XvMCSurface *surface)
{
    if (!display || !surface)
	return XvMCBadSurface;
    return Success;
}

/*
 * Function: XvMCGetSurfaceStatus
 * Description:
 * Arguments:
 *  display: connection to X server
 *  surface: The surface to query
 *  stat: One of the Following
 *    XVMC_RENDERING - The last XvMCRenderSurface command has not
 *                     completed.
 *    XVMC_DISPLAYING - The surface is currently being displayed or a
 *                     display is pending.
 */
Status XvMCGetSurfaceStatus(Display *display, XvMCSurface *surface, int *stat)
{
    Status ret;

    if (!display || !surface || !stat)
        return XvMCBadSurface;

    ret = (xvmc_driver->get_surface_status)(display, surface, stat);
    if (ret) {
	XVMC_ERR("get surface status fail\n");
	return ret;
    }

    return Success;
}

/*
 * Function: XvMCHideSurface
 * Description: Stops the display of a surface.
 * Arguments:
 *   display - Connection to the X server.
 *   surface - surface to be hidden.
 *
 * Returns: Status
 */
Status XvMCHideSurface(Display *display, XvMCSurface *surface)
{
    int stat = 0;
    Status ret;

    if (!display || !surface)
        return XvMCBadSurface;

    XvMCSyncSurface(display, surface);

    /*
      Get the status of the surface, if it is not currently displayed
      we don't need to worry about it.
    */
    if ((ret = XvMCGetSurfaceStatus(display, surface, &stat)) != Success)
        return ret;

    if (!(stat & XVMC_DISPLAYING))
        return Success;

    /* FIXME: */
    XVMC_ERR("XvMCHideSurface not implemented!\n");
    return BadValue;
}

/*
 * Function: XvMCCreateSubpicture
 * Description: This creates a subpicture by filling out the XvMCSubpicture
 *              structure passed to it and returning Success.
 * Arguments:
 *   display - Connection to the X server.
 *   context - The context to create the subpicture for.
 *   subpicture - Pre-allocated XvMCSubpicture structure to be filled in.
 *   width - of subpicture
 *   height - of subpicture
 *   xvimage_id - The id describing the XvImage format.
 *
 * Returns: Status
 */
Status XvMCCreateSubpicture(Display *display, XvMCContext *context,
                            XvMCSubpicture *subpicture,
                            unsigned short width, unsigned short height,
                            int xvimage_id)
{
    XVMC_ERR("XvMCCreateSubpicture not implemented!\n");
    return BadValue;
}

/*
 * Function: XvMCClearSubpicture
 * Description: Clear the area of the given subpicture to "color".
 *              structure passed to it and returning Success.
 * Arguments:
 *   display - Connection to the X server.
 *   subpicture - Subpicture to clear.
 *   x, y, width, height - rectangle in the subpicture to clear.
 *   color - The data to file the rectangle with.
 *
 * Returns: Status
 */
Status XvMCClearSubpicture(Display *display, XvMCSubpicture *subpicture,
                           short x, short y,
                           unsigned short width, unsigned short height,
                           unsigned int color)
{
    XVMC_ERR("XvMCClearSubpicture not implemented!");
    return BadValue;
}

/*
 * Function: XvMCCompositeSubpicture
 * Description: Composite the XvImae on the subpicture. This composit uses
 *              non-premultiplied alpha. Destination alpha is utilized
 *              except for with indexed subpictures. Indexed subpictures
 *              use a simple "replace".
 * Arguments:
 *   display - Connection to the X server.
 *   subpicture - Subpicture to clear.
 *   image - the XvImage to be used as the source of the composite.
 *   srcx, srcy, width, height - The rectangle from the image to be used.
 *   dstx, dsty - location in the subpicture to composite the source.
 *
 * Returns: Status
 */
Status XvMCCompositeSubpicture(Display *display, XvMCSubpicture *subpicture,
                               XvImage *image,
                               short srcx, short srcy,
                               unsigned short width, unsigned short height,
                               short dstx, short dsty)
{
    XVMC_ERR("XvMCCompositeSubpicture not implemented!");
    return BadValue;
}


/*
 * Function: XvMCDestroySubpicture
 * Description: Destroys the specified subpicture.
 * Arguments:
 *   display - Connection to the X server.
 *   subpicture - Subpicture to be destroyed.
 *
 * Returns: Status
 */
Status XvMCDestroySubpicture(Display *display, XvMCSubpicture *subpicture)
{
    XVMC_ERR("XvMCDestroySubpicture not implemented!");
    return BadValue;
}


/*
 * Function: XvMCSetSubpicturePalette
 * Description: Set the subpictures palette
 * Arguments:
 *   display - Connection to the X server.
 *   subpicture - Subpiture to set palette for.
 *   palette - A pointer to an array holding the palette data. The array
 *     is num_palette_entries * entry_bytes in size.
 * Returns: Status
 */
Status XvMCSetSubpicturePalette(Display *display, XvMCSubpicture *subpicture,
                                unsigned char *palette)
{
    XVMC_ERR("XvMCSetSubpicturePalette not implemented!");
    return BadValue;
}

/*
 * Function: XvMCBlendSubpicture
 * Description:
 *    The behavior of this function is different depending on whether
 *    or not the XVMC_BACKEND_SUBPICTURE flag is set in the XvMCSurfaceInfo.
 *    i915 only support frontend behavior.
 *
 *    XVMC_BACKEND_SUBPICTURE not set ("frontend" behavior):
 *
 *    XvMCBlendSubpicture is a no-op in this case.
 *
 * Arguments:
 *   display - Connection to the X server.
 *   subpicture - The subpicture to be blended into the video.
 *   target_surface - The surface to be displayed with the blended subpic.
 *   source_surface - Source surface prior to blending.
 *   subx, suby, subw, subh - The rectangle from the subpicture to use.
 *   surfx, surfy, surfw, surfh - The rectangle in the surface to blend
 *      blend the subpicture rectangle into. Scaling can ocure if
 *      XVMC_SUBPICTURE_INDEPENDENT_SCALING is set.
 *
 * Returns: Status
 */
Status XvMCBlendSubpicture(Display *display, XvMCSurface *target_surface,
                           XvMCSubpicture *subpicture,
                           short subx, short suby,
                           unsigned short subw, unsigned short subh,
                           short surfx, short surfy,
                           unsigned short surfw, unsigned short surfh)
{
    XVMC_ERR("XvMCBlendSubpicture not implemented!");
    return BadValue;
}

/*
 * Function: XvMCBlendSubpicture2
 * Description:
 *    The behavior of this function is different depending on whether
 *    or not the XVMC_BACKEND_SUBPICTURE flag is set in the XvMCSurfaceInfo.
 *    i915 only supports frontend blending.
 *
 *    XVMC_BACKEND_SUBPICTURE not set ("frontend" behavior):
 *
 *    XvMCBlendSubpicture2 blends the source_surface and subpicture and
 *    puts it in the target_surface.  This does not effect the status of
 *    the source surface but will cause the target_surface to query
 *    XVMC_RENDERING until the blend is completed.
 *
 * Arguments:
 *   display - Connection to the X server.
 *   subpicture - The subpicture to be blended into the video.
 *   target_surface - The surface to be displayed with the blended subpic.
 *   source_surface - Source surface prior to blending.
 *   subx, suby, subw, subh - The rectangle from the subpicture to use.
 *   surfx, surfy, surfw, surfh - The rectangle in the surface to blend
 *      blend the subpicture rectangle into. Scaling can ocure if
 *      XVMC_SUBPICTURE_INDEPENDENT_SCALING is set.
 *
 * Returns: Status
 */
Status XvMCBlendSubpicture2(Display *display,
                            XvMCSurface *source_surface,
                            XvMCSurface *target_surface,
                            XvMCSubpicture *subpicture,
                            short subx, short suby,
                            unsigned short subw, unsigned short subh,
                            short surfx, short surfy,
                            unsigned short surfw, unsigned short surfh)
{
    XVMC_ERR("XvMCBlendSubpicture2 not implemented!");
    return BadValue;
}

/*
 * Function: XvMCSyncSubpicture
 * Description: This function blocks until all composite/clear requests on
 *              the subpicture have been complete.
 * Arguments:
 *   display - Connection to the X server.
 *   subpicture - The subpicture to synchronize
 *
 * Returns: Status
 */
Status XvMCSyncSubpicture(Display *display, XvMCSubpicture *subpicture)
{
    XVMC_ERR("XvMCSyncSubpicture not implemented!");
    return BadValue;
}

/*
 * Function: XvMCFlushSubpicture
 * Description: This function commits pending composite/clear requests to
 *              ensure that they will be completed in a finite amount of
 *              time.
 * Arguments:
 *   display - Connection to the X server.
 *   subpicture - The subpicture whos compsiting should be flushed
 *
 * Returns: Status
 */
Status XvMCFlushSubpicture(Display *display, XvMCSubpicture *subpicture)
{
    XVMC_ERR("XvMCFlushSubpicture not implemented!");
    return BadValue;
}

/*
 * Function: XvMCGetSubpictureStatus
 * Description: This function gets the current status of a subpicture
 *
 * Arguments:
 *   display - Connection to the X server.
 *   subpicture - The subpicture whos status is being queried
 *   stat - The status of the subpicture. It can be any of the following
 *          OR'd together:
 *          XVMC_RENDERING  - Last composite or clear request not completed
 *          XVMC_DISPLAYING - Suppicture currently being displayed.
 *
 * Returns: Status
 */
Status XvMCGetSubpictureStatus(Display *display, XvMCSubpicture *subpicture,
                               int *stat)
{
    XVMC_ERR("XvMCGetSubpictureStatus not implemented!");
    return BadValue;
}

/*
 * Function: XvMCQueryAttributes
 * Description: An array of XvAttributes of size "number" is returned by
 *   this function. If there are no attributes, NULL is returned and number
 *   is set to 0. The array may be freed with xfree().
 *
 * Arguments:
 *   display - Connection to the X server.
 *   context - The context whos attributes we are querying.
 *   number - The returned number of recognized atoms
 *
 * Returns:
 *  An array of XvAttributes.
 */
XvAttribute *XvMCQueryAttributes(Display *display, XvMCContext *context,
                                 int *number)
{
    /* now XvMC has no extra attribs than Xv */
    *number = 0;
    return NULL;
}

/*
 * Function: XvMCSetAttribute
 * Description: This function sets a context-specific attribute.
 *
 * Arguments:
 *   display - Connection to the X server.
 *   context - The context whos attributes we are querying.
 *   attribute - The X atom of the attribute to be changed.
 *   value - The new value for the attribute.
 *
 * Returns:
 *  Status
 */
Status XvMCSetAttribute(Display *display, XvMCContext *context,
                        Atom attribute, int value)
{
    return Success;
}

/*
 * Function: XvMCGetAttribute
 * Description: This function queries a context-specific attribute and
 *   returns the value.
 *
 * Arguments:
 *   display - Connection to the X server.
 *   context - The context whos attributes we are querying.
 *   attribute - The X atom of the attribute to be queried
 *   value - The returned attribute value
 *
 * Returns:
 *  Status
 */
Status XvMCGetAttribute(Display *display, XvMCContext *context,
                        Atom attribute, int *value)
{
    return Success;
}