workbench/libs/gallium/createpipe.c

   1 /*
   2     Copyright © 2015-2019, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <aros/debug.h>
   7
   8 #include <proto/utility.h>
   9 #include <proto/intuition.h>
  10
  11 #include <hidd/gfx.h>
  12
  13 #include <stdio.h>
  14
  15 #include "gallium_intern.h"
  16
  17 #undef HiddGalliumAttrBase
  18 #define HiddGalliumAttrBase GB(GalliumBase)->galliumAttrBase
  19
  20 /*****************************************************************************
  21
  22     NAME */
  23
  24       AROS_LH1(PipeHandle_t, CreatePipe,
  25
  26 /*  SYNOPSIS */
  27       AROS_LHA(struct TagItem *, tags, A0),
  28
  29 /*  LOCATION */
  30       struct Library *, GalliumBase, 5, Gallium)
  31
  32 /*  FUNCTION
  33         Instantiates a gallium pipe.
  34
  35     INPUTS
  36         tags - a pointer to tags to be used during creation.
  37
  38     TAGS
  39         CPS_PipeFriendBitmap - a bitmap our pipe screen will target.
  40         CPS_PipeScreenDriver * - where to store the driver.
  41         CPS_GalliumInterfaceVersion - Indicates a version of gallium interface
  42             that a client is expected to receive. The client expected version
  43             must ideally match with the version that the driver provides,
  44             because gallium interface is not backwards compatible. This tag is
  45             required. Unless otherwise needed, the value
  46             GALLIUM_INTERFACE_VERSION should be passed.
  47             See also CreatePipeV.
  48
  49     RESULT
  50         A valid pipe instance or NULL if creation was not successful.
  51
  52     BUGS
  53
  54     INTERNALS
  55
  56 *****************************************************************************/
  57 {
  58     AROS_LIBFUNC_INIT
  59
  60     struct TagItem galliumTags[] =
  61     {
  62         { aHidd_Gallium_InterfaceVersion,       0 },
  63         { TAG_DONE,                             0 }
  64     };
  65     OOP_Object                                  *_driver = NULL;
  66     OOP_Object                                  **driver;
  67     struct BitMap                               *friendbm;
  68     struct Screen                               *pubscreen = NULL;
  69
  70     galliumTags[0].ti_Data = GetTagData(CPS_GalliumInterfaceVersion, -1, tags);
  71     friendbm = (struct BitMap *)GetTagData(CPS_PipeFriendBitMap, 0, tags);
  72     driver = (OOP_Object **)GetTagData(CPS_PipeScreenDriver, (IPTR)&_driver, tags);
  73
  74     /* The tag is missing */
  75     if (galliumTags[0].ti_Data == -1)
  76         return NULL;
  77
  78     if (!friendbm)
  79     {
  80         if ((pubscreen = LockPubScreen(NULL)) != NULL)
  81             friendbm = pubscreen->RastPort.BitMap;
  82     }
  83
  84     D(bug("[Gallium] %s: friendbm @ 0x%p\n", __PRETTY_FUNCTION__, friendbm));
  85
  86     if (friendbm && IS_HIDD_BM(friendbm))
  87     {
  88         OOP_Object *bmObj = HIDD_BM_OBJ(friendbm);
  89         if (bmObj)
  90         {
  91             OOP_Object *gfxhidd;
  92             OOP_GetAttr(bmObj, aHidd_BitMap_GfxHidd, (IPTR *)&gfxhidd);
  93
  94             if (gfxhidd)
  95             {
  96                 *driver = HIDD_Gfx_CreateObject(gfxhidd, GB(GalliumBase)->basegallium, galliumTags);
  97             }
  98         }
  99     }
 100
 101     if (pubscreen)
 102         UnlockPubScreen(NULL, pubscreen);
 103
 104     if (!*driver)
 105     {
 106         char tmpname[128];
 107         if (!GB(GalliumBase)->fallbackmodule)
 108         {
 109             sprintf(tmpname, "%s.hidd", GB(GalliumBase)->fallback);
 110
 111             D(bug("[Gallium] %s: trying fallback '%s' ...\n", __PRETTY_FUNCTION__, tmpname));
 112
 113             GB(GalliumBase)->fallbackmodule = OpenLibrary(tmpname, 9);
 114
 115             D(bug("[Gallium] %s: '%s' @ 0x%p\n", __PRETTY_FUNCTION__, tmpname, GB(GalliumBase)->fallbackmodule));
 116         }
 117
 118         if (GB(GalliumBase)->fallbackmodule)
 119         {
 120             sprintf(tmpname, "hidd.gallium.%s", GB(GalliumBase)->fallback);
 121
 122             *driver = OOP_NewObject(NULL, tmpname, galliumTags);
 123
 124             D(bug("[Gallium] %s: '%s' @ 0x%p\n", __PRETTY_FUNCTION__, tmpname, *driver));
 125         }
 126     }
 127
 128     return *driver;
 129
 130     AROS_LIBFUNC_EXIT
 131 }
 132