rom/graphics/dispinfo.c

   1 /*
   2     Copyright © 1995-2017, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <aros/debug.h>
   7
   8 #include <proto/alib.h>
   9 #include <proto/exec.h>
  10 #include <proto/oop.h>
  11 #include <proto/arossupport.h>
  12 #include <proto/utility.h>
  13 #include <proto/graphics.h>
  14
  15 #include <exec/lists.h>
  16 #include <exec/memory.h>
  17 #include <exec/rawfmt.h>
  18
  19 #include <graphics/displayinfo.h>
  20 #include <graphics/monitor.h>
  21
  22 #include <cybergraphx/cybergraphics.h>
  23
  24 #include <oop/oop.h>
  25
  26 #include <hidd/gfx.h>
  27
  28 #include <stddef.h>
  29 #include <string.h>
  30
  31 #include "graphics_intern.h"
  32 #include "gfxfuncsupport.h"
  33 #include "dispinfo.h"
  34
  35 HIDDT_ModeID get_best_resolution_and_depth(struct monitor_driverdata *mdd, struct GfxBase *GfxBase)
  36 {
  37     HIDDT_ModeID ret = vHidd_ModeID_Invalid;
  38     struct DisplayInfoHandle *dh;
  39     ULONG best_resolution = 0;
  40     ULONG best_depth = 0;
  41
  42     for (dh = mdd->modes; dh->id != vHidd_ModeID_Invalid; dh++) {
  43         OOP_Object *sync, *pf;
  44         IPTR depth;
  45
  46         HIDD_Gfx_GetMode(mdd->gfxhidd, dh->id, &sync, &pf);
  47         OOP_GetAttr(pf, aHidd_PixFmt_Depth, &depth);
  48
  49         if (depth >= best_depth) {
  50             IPTR width, height;
  51             ULONG res;
  52
  53             OOP_GetAttr(sync, aHidd_Sync_HDisp, &width);
  54             OOP_GetAttr(sync, aHidd_Sync_VDisp, &height);
  55
  56             res = width * height;
  57             if (res > best_resolution) {
  58                 ret = dh->id;
  59                 best_resolution = res;
  60             }
  61             best_depth = depth;
  62         }
  63     }
  64     return ret;
  65 }
  66
  67 /* Looks up a DriverData corresponding to a MonitorSpec */
  68 struct monitor_driverdata *MonitorFromSpec(struct MonitorSpec *mspc, struct GfxBase *GfxBase)
  69 {
  70     struct monitor_driverdata *ret = NULL;
  71     struct monitor_driverdata *mdd;
  72     OOP_Object *drv;
  73
  74     if (!mspc)
  75         return NULL;
  76
  77     /*
  78      * FIXME: NULL ms_Object will likely mean chipset MonitorSpec (they don't have 1:1 relation with sync objects)
  79      * Process this correctly here. Or am i wrong ?
  80      */
  81     if (!mspc->ms_Object)
  82          return NULL;
  83
  84     OOP_GetAttr((OOP_Object *)mspc->ms_Object, aHidd_Sync_GfxHidd, (IPTR *)&drv);
  85
  86     ObtainSemaphoreShared(&CDD(GfxBase)->displaydb_sem);
  87
  88     for (mdd = CDD(GfxBase)->monitors; mdd; mdd = mdd->next)
  89     {
  90         /*
  91          * Sync objects know nothing about fakegfx proxy class.
  92          * They carry a pointer to a real driver object.
  93          */
  94         if (mdd->gfxhidd_orig == drv)
  95         {
  96             ret = mdd;
  97             break;
  98         }
  99     }
 100
 101     ReleaseSemaphore(&CDD(GfxBase)->displaydb_sem);
 102
 103     return ret;
 104 }