xserver/hw/xfree86/common/xf86xvmc.h

/*
 * Copyright (c) 2001 by The XFree86 Project, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of the copyright holder(s)
 * and author(s) shall not be used in advertising or otherwise to promote
 * the sale, use or other dealings in this Software without prior written
 * authorization from the copyright holder(s) and author(s).
 */

#ifndef _XF86XVMC_H
#define _XF86XVMC_H

#include "xvmcext.h"
#include "xf86xv.h"

typedef struct {
    int num_xvimages;
    int *xvimage_ids;           /* reference the subpictures in the XF86MCAdaptorRec */
} XF86MCImageIDList;

typedef struct {
    int surface_type_id;        /* Driver generated.  Must be unique on the port */
    int chroma_format;
    int color_description;      /* no longer used */
    unsigned short max_width;
    unsigned short max_height;
    unsigned short subpicture_max_width;
    unsigned short subpicture_max_height;
    int mc_type;
    int flags;
    XF86MCImageIDList *compatible_subpictures;  /* can be null, if none */
} XF86MCSurfaceInfoRec, *XF86MCSurfaceInfoPtr;

/*
   xf86XvMCCreateContextProc 

   DIX will fill everything out in the context except the driver_priv.
   The port_priv holds the private data specified for the port when
   Xv was initialized by the driver.
   The driver may store whatever it wants in driver_priv and edit
   the width, height and flags.  If the driver wants to return something
   to the client it can allocate space in priv and specify the number
   of 32 bit words in num_priv.  This must be dynamically allocated
   space because DIX will free it after it passes it to the client.
*/

typedef int (*xf86XvMCCreateContextProcPtr) (ScrnInfoPtr pScrn,
                                             XvMCContextPtr context,
                                             int *num_priv, CARD32 **priv);

typedef void (*xf86XvMCDestroyContextProcPtr) (ScrnInfoPtr pScrn,
                                               XvMCContextPtr context);

/*
   xf86XvMCCreateSurfaceProc 

   DIX will fill everything out in the surface except the driver_priv.
   The driver may store whatever it wants in driver_priv.  The driver
   may pass data back to the client in the same manner as the
   xf86XvMCCreateContextProc.
*/

typedef int (*xf86XvMCCreateSurfaceProcPtr) (ScrnInfoPtr pScrn,
                                             XvMCSurfacePtr surface,
                                             int *num_priv, CARD32 **priv);

typedef void (*xf86XvMCDestroySurfaceProcPtr) (ScrnInfoPtr pScrn,
                                               XvMCSurfacePtr surface);

/*
   xf86XvMCCreateSubpictureProc 

   DIX will fill everything out in the subpicture except the driver_priv,
   num_palette_entries, entry_bytes and component_order.  The driver may
   store whatever it wants in driver_priv and edit the width and height.
   If it is a paletted subpicture the driver needs to fill out the
   num_palette_entries, entry_bytes and component_order.  These are
   not communicated to the client until the time the surface is
   created.

   The driver may pass data back to the client in the same manner as the
   xf86XvMCCreateContextProc.
*/

typedef int (*xf86XvMCCreateSubpictureProcPtr) (ScrnInfoPtr pScrn,
                                                XvMCSubpicturePtr subpicture,
                                                int *num_priv, CARD32 **priv);

typedef void (*xf86XvMCDestroySubpictureProcPtr) (ScrnInfoPtr pScrn,
                                                  XvMCSubpicturePtr subpicture);

typedef struct {
    const char *name;
    int num_surfaces;
    XF86MCSurfaceInfoPtr *surfaces;
    int num_subpictures;
    XF86ImagePtr *subpictures;
    xf86XvMCCreateContextProcPtr CreateContext;
    xf86XvMCDestroyContextProcPtr DestroyContext;
    xf86XvMCCreateSurfaceProcPtr CreateSurface;
    xf86XvMCDestroySurfaceProcPtr DestroySurface;
    xf86XvMCCreateSubpictureProcPtr CreateSubpicture;
    xf86XvMCDestroySubpictureProcPtr DestroySubpicture;
} XF86MCAdaptorRec, *XF86MCAdaptorPtr;

/* 
   xf86XvMCScreenInit 

   Unlike Xv, the adaptor data is not copied from this structure.
   This structure's data is used so it must stick around for the
   life of the server.  Note that it's an array of pointers not
   an array of structures.
*/

extern _X_EXPORT Bool xf86XvMCScreenInit(ScreenPtr pScreen,
                                         int num_adaptors,
                                         XF86MCAdaptorPtr * adaptors);

extern _X_EXPORT XF86MCAdaptorPtr xf86XvMCCreateAdaptorRec(void);
extern _X_EXPORT void xf86XvMCDestroyAdaptorRec(XF86MCAdaptorPtr adaptor);

#endif                          /* _XF86XVMC_H */