Mercurial > sdl-ios-xcode

annotate src/video/maccommon/SDL_macwm.c @ 3968:ae0be7edf7d0 SDL-1.2

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Removed EPOC port...it's being replaced by an updated Symbian port with the original author's blessing.
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 15 Jun 2007 15:42:15 +0000
parents 7cdb1d7fc93b
children a1b03ba2fcd0
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #if defined(__APPLE__) && defined(__MACH__)
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25 #include <Carbon/Carbon.h>
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26 #elif TARGET_API_MAC_CARBON && (UNIVERSAL_INTERFACES_VERSION > 0x0335)
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27 #include <Carbon.h>
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28 #else
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29 #include <Windows.h>
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30 #include <Strings.h>
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31 #endif
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32
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33 #if SDL_MACCLASSIC_GAMMA_SUPPORT
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34 #include <Devices.h>
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35 #include <Files.h>
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36 #include <MacTypes.h>
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37 #include <QDOffscreen.h>
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38 #include <Quickdraw.h>
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39 #include <Video.h>
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40 #endif
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41
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42 #include "SDL_stdinc.h"
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43 #include "SDL_macwm_c.h"
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44
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45 void Mac_SetCaption(_THIS, const char *title, const char *icon)
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46 {
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47 /* Don't convert C to P string in place, because it may be read-only */
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48 Str255 ptitle; /* MJS */
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49 ptitle[0] = strlen (title);
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50 SDL_memcpy(ptitle+1, title, ptitle[0]); /* MJS */
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51 if (SDL_Window)
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52 SetWTitle(SDL_Window, ptitle); /* MJS */
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53 }
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54
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55 #if SDL_MACCLASSIC_GAMMA_SUPPORT
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56 /*
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57 * ADC Gamma Ramp support...
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58 *
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59 * Mac Gamma Ramp code was originally from sample code provided by
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60 * Apple Developer Connection, and not written specifically for SDL:
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61 * "Contains: Functions to enable Mac OS device gamma adjustments using 3 channel 256 element 8 bit gamma ramps
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62 * Written by: Geoff Stahl (ggs)
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63 * Copyright: Copyright (c) 1999 Apple Computer, Inc., All Rights Reserved
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64 * Disclaimer: You may incorporate this sample code into your applications without
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65 * restriction, though the sample code has been provided "AS IS" and the
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66 * responsibility for its operation is 100% yours. However, what you are
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67 * not permitted to do is to redistribute the source as "DSC Sample Code"
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68 * after having made changes. If you're going to re-distribute the source,
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69 * we require that you make it clear in the source that the code was
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70 * descended from Apple Sample Code, but that you've made changes."
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71 * (The sample code has been integrated into this file, and thus is modified from the original Apple sources.)
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72 */
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73
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74 typedef struct recDeviceGamma /* storage for device handle and gamma table */
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75 {
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76 GDHandle hGD; /* handle to device */
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77 GammaTblPtr pDeviceGamma; /* pointer to device gamma table */
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78 } recDeviceGamma;
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79 typedef recDeviceGamma * precDeviceGamma;
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80
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81 typedef struct recSystemGamma /* storage for system devices and gamma tables */
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82 {
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83 short numDevices; /* number of devices */
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84 precDeviceGamma * devGamma; /* array of pointers to device gamma records */
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85 } recSystemGamma;
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86 typedef recSystemGamma * precSystemGamma;
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87
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88 static Ptr CopyGammaTable (GammaTblPtr pTableGammaIn)
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89 {
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90 GammaTblPtr pTableGammaOut = NULL;
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91 short tableSize, dataWidth;
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92
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93 if (pTableGammaIn) /* if there is a table to copy */
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94 {
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95 dataWidth = (pTableGammaIn->gDataWidth + 7) / 8; /* number of bytes per entry */
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96 tableSize = sizeof (GammaTbl) + pTableGammaIn->gFormulaSize +
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97 (pTableGammaIn->gChanCnt * pTableGammaIn->gDataCnt * dataWidth);
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98 pTableGammaOut = (GammaTblPtr) NewPtr (tableSize); /* allocate new table */
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99 if (pTableGammaOut)
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100 BlockMove( (Ptr)pTableGammaIn, (Ptr)pTableGammaOut, tableSize); /* move everything */
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101 }
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102 return (Ptr)pTableGammaOut; /* return whatever we allocated, could be NULL */
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103 }
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104
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105 static OSErr GetGammaTable (GDHandle hGD, GammaTblPtr * ppTableGammaOut)
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106 {
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107 VDGammaRecord DeviceGammaRec;
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108 CntrlParam cParam;
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109 OSErr err;
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110
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111 cParam.ioCompletion = NULL; /* set up control params */
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112 cParam.ioNamePtr = NULL;
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113 cParam.ioVRefNum = 0;
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114 cParam.ioCRefNum = (**hGD).gdRefNum;
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115 cParam.csCode = cscGetGamma; /* Get Gamma commnd to device */
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116 *(Ptr *)cParam.csParam = (Ptr) &DeviceGammaRec; /* record for gamma */
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117
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118 err = PBStatusSync( (ParmBlkPtr)&cParam ); /* get gamma */
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119
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120 *ppTableGammaOut = (GammaTblPtr)(DeviceGammaRec.csGTable); /* pull table out of record */
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121
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122 return err;
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123 }
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124
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125 static Ptr GetDeviceGamma (GDHandle hGD)
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126 {
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parents: 1402
diff changeset
127 GammaTblPtr pTableGammaDevice = NULL;
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diff changeset
128 GammaTblPtr pTableGammaReturn = NULL;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
129 OSErr err;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
130
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
131 err = GetGammaTable (hGD, &pTableGammaDevice); /* get a pointer to the devices table */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
132 if ((noErr == err) && pTableGammaDevice) /* if succesful */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
133 pTableGammaReturn = (GammaTblPtr) CopyGammaTable (pTableGammaDevice); /* copy to global */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
134
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
135 return (Ptr) pTableGammaReturn;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
136 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
137
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
138 static void DisposeGammaTable (Ptr pGamma)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
139 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
140 if (pGamma)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
141 DisposePtr((Ptr) pGamma); /* get rid of it */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
142 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
143
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
144 static void DisposeSystemGammas (Ptr* ppSystemGammas)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
145 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
146 precSystemGamma pSysGammaIn;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
147 if (ppSystemGammas)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
148 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
149 pSysGammaIn = (precSystemGamma) *ppSystemGammas;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
150 if (pSysGammaIn)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
151 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
152 short i;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
153 for (i = 0; i < pSysGammaIn->numDevices; i++) /* for all devices */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
154 if (pSysGammaIn->devGamma [i]) /* if pointer is valid */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
155 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
156 DisposeGammaTable ((Ptr) pSysGammaIn->devGamma [i]->pDeviceGamma); /* dump gamma table */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
157 DisposePtr ((Ptr) pSysGammaIn->devGamma [i]); /* dump device info */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
158 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
159 DisposePtr ((Ptr) pSysGammaIn->devGamma); /* dump device pointer array */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
160 DisposePtr ((Ptr) pSysGammaIn); /* dump system structure */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
161 *ppSystemGammas = NULL;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
162 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
163 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
164 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
165
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
166 static Boolean GetDeviceGammaRampGD (GDHandle hGD, Ptr pRamp)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
167 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
168 GammaTblPtr pTableGammaTemp = NULL;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
169 long indexChan, indexEntry;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
170 OSErr err;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
171
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
172 if (pRamp) /* ensure pRamp is allocated */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
173 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
174 err = GetGammaTable (hGD, &pTableGammaTemp); /* get a pointer to the current gamma */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
175 if ((noErr == err) && pTableGammaTemp) /* if successful */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
176 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
177 /* fill ramp */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
178 unsigned char * pEntry = (unsigned char *) &pTableGammaTemp->gFormulaData + pTableGammaTemp->gFormulaSize; /* base of table */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
179 short bytesPerEntry = (pTableGammaTemp->gDataWidth + 7) / 8; /* size, in bytes, of the device table entries */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
180 short shiftRightValue = pTableGammaTemp->gDataWidth - 8; /* number of right shifts device -> ramp */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
181 short channels = pTableGammaTemp->gChanCnt;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
182 short entries = pTableGammaTemp->gDataCnt;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
183 if (3 == channels) /* RGB format */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
184 { /* note, this will create runs of entries if dest. is bigger (not linear interpolate) */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
185 for (indexChan = 0; indexChan < channels; indexChan++)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
186 for (indexEntry = 0; indexEntry < 256; indexEntry++)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
187 *((unsigned char *) pRamp + (indexChan * 256) + indexEntry) =
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
188 *(pEntry + indexChan * entries * bytesPerEntry + indexEntry * entries * bytesPerEntry / 256) >> shiftRightValue;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
189 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
190 else /* single channel format */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
191 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
192 for (indexChan = 0; indexChan < 768; indexChan += 256) /* repeat for all 3 channels (step by ramp size) */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
193 for (indexEntry = 0; indexEntry < 256; indexEntry++) /* for all entries set vramp value */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
194 *((unsigned char *) pRamp + indexChan + indexEntry) =
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
195 *(pEntry + indexEntry * entries * bytesPerEntry / 256) >> shiftRightValue;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
196 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
197 return true;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
198 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
199 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
200 return false;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
201 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
202
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
203 static Ptr GetSystemGammas (void)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
204 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
205 precSystemGamma pSysGammaOut; /* return pointer to system device gamma info */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
206 short devCount = 0; /* number of devices attached */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
207 Boolean fail = false;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
208 GDHandle hGDevice;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
209
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
210 pSysGammaOut = (precSystemGamma) NewPtr (sizeof (recSystemGamma)); /* allocate for structure */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
211
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
212 hGDevice = GetDeviceList (); /* top of device list */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
213 do /* iterate */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
214 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
215 devCount++; /* count devices */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
216 hGDevice = GetNextDevice (hGDevice); /* next device */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
217 } while (hGDevice);
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
218
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
219 pSysGammaOut->devGamma = (precDeviceGamma *) NewPtr (sizeof (precDeviceGamma) * devCount); /* allocate for array of pointers to device records */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
220 if (pSysGammaOut)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
221 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
222 pSysGammaOut->numDevices = devCount; /* stuff count */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
223
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
224 devCount = 0; /* reset iteration */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
225 hGDevice = GetDeviceList ();
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
226 do
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
227 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
228 pSysGammaOut->devGamma [devCount] = (precDeviceGamma) NewPtr (sizeof (recDeviceGamma)); /* new device record */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
229 if (pSysGammaOut->devGamma [devCount]) /* if we actually allocated memory */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
230 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
231 pSysGammaOut->devGamma [devCount]->hGD = hGDevice; /* stuff handle */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
232 pSysGammaOut->devGamma [devCount]->pDeviceGamma = (GammaTblPtr)GetDeviceGamma (hGDevice); /* copy gamma table */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
233 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
234 else /* otherwise dump record on exit */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
235 fail = true;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
236 devCount++; /* next device */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
237 hGDevice = GetNextDevice (hGDevice);
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
238 } while (hGDevice);
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
239 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
240 if (!fail) /* if we did not fail */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
241 return (Ptr) pSysGammaOut; /* return pointer to structure */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
242 else
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
243 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
244 DisposeSystemGammas ((Ptr *) &pSysGammaOut); /* otherwise dump the current structures (dispose does error checking) */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
245 return NULL; /* could not complete */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
246 }
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247 }
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248
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diff changeset
249 static void RestoreDeviceGamma (GDHandle hGD, Ptr pGammaTable)
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250 {
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251 VDSetEntryRecord setEntriesRec;
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252 VDGammaRecord gameRecRestore;
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253 CTabHandle hCTabDeviceColors;
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254 Ptr csPtr;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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255 OSErr err = noErr;
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256
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257 if (pGammaTable) /* if we have a table to restore */
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258 {
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259 gameRecRestore.csGTable = pGammaTable; /* setup restore record */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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260 csPtr = (Ptr) &gameRecRestore;
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261 err = Control((**hGD).gdRefNum, cscSetGamma, (Ptr) &csPtr); /* restore gamma */
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262
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
263 if ((noErr == err) && (8 == (**(**hGD).gdPMap).pixelSize)) /* if successful and on an 8 bit device */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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264 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
265 hCTabDeviceColors = (**(**hGD).gdPMap).pmTable; /* do SetEntries to force CLUT update */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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266 setEntriesRec.csTable = (ColorSpec *) &(**hCTabDeviceColors).ctTable;
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267 setEntriesRec.csStart = 0;
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268 setEntriesRec.csCount = (**hCTabDeviceColors).ctSize;
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269 csPtr = (Ptr) &setEntriesRec;
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270
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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271 err = Control((**hGD).gdRefNum, cscSetEntries, (Ptr) &csPtr); /* SetEntries in CLUT */
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272 }
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273 }
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274 }
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275
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276 static void RestoreSystemGammas (Ptr pSystemGammas)
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277 {
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278 short i;
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279 precSystemGamma pSysGammaIn = (precSystemGamma) pSystemGammas;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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280 if (pSysGammaIn)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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281 for (i = 0; i < pSysGammaIn->numDevices; i++) /* for all devices */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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282 RestoreDeviceGamma (pSysGammaIn->devGamma [i]->hGD, (Ptr) pSysGammaIn->devGamma [i]->pDeviceGamma); /* restore gamma */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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283 }
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284
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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285 static Ptr CreateEmptyGammaTable (short channels, short entries, short bits)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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286 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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287 GammaTblPtr pTableGammaOut = NULL;
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288 short tableSize, dataWidth;
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289
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290 dataWidth = (bits + 7) / 8; /* number of bytes per entry */
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291 tableSize = sizeof (GammaTbl) + (channels * entries * dataWidth);
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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292 pTableGammaOut = (GammaTblPtr) NewPtrClear (tableSize); /* allocate new tabel */
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293
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294 if (pTableGammaOut) /* if we successfully allocated */
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295 {
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296 pTableGammaOut->gVersion = 0; /* set parameters based on input */
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297 pTableGammaOut->gType = 0;
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298 pTableGammaOut->gFormulaSize = 0;
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299 pTableGammaOut->gChanCnt = channels;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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300 pTableGammaOut->gDataCnt = entries;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
301 pTableGammaOut->gDataWidth = bits;
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302 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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303 return (Ptr)pTableGammaOut; /* return whatever we allocated */
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304 }
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diff changeset
305
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306 static Boolean SetDeviceGammaRampGD (GDHandle hGD, Ptr pRamp)
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307 {
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308 VDSetEntryRecord setEntriesRec;
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diff changeset
309 VDGammaRecord gameRecRestore;
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310 GammaTblPtr pTableGammaNew;
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311 GammaTblPtr pTableGammaCurrent = NULL;
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diff changeset
312 CTabHandle hCTabDeviceColors;
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313 Ptr csPtr;
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314 OSErr err;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
315 short dataBits, entries, channels = 3; /* force three channels in the gamma table */
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diff changeset
316
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
317 if (pRamp) /* ensure pRamp is allocated */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
318 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
319 err= GetGammaTable (hGD, &pTableGammaCurrent); /* get pointer to current table */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
320 if ((noErr == err) && pTableGammaCurrent)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
321 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
322 dataBits = pTableGammaCurrent->gDataWidth; /* table must have same data width */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
323 entries = pTableGammaCurrent->gDataCnt; /* table must be same size */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
324 pTableGammaNew = (GammaTblPtr) CreateEmptyGammaTable (channels, entries, dataBits); /* our new table */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
325 if (pTableGammaNew) /* if successful fill table */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
326 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
327 unsigned char * pGammaBase = (unsigned char *) &pTableGammaNew->gFormulaData + pTableGammaNew->gFormulaSize; /* base of table */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
328 if ((256 == entries) && (8 == dataBits)) /* simple case: direct mapping */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
329 BlockMove ((Ptr)pRamp, (Ptr)pGammaBase, channels * entries); /* move everything */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
330 else /* tough case handle entry, channel and data size disparities */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
331 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
332 short indexChan, indexEntry;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
333 short bytesPerEntry = (dataBits + 7) / 8; /* size, in bytes, of the device table entries */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
334 short shiftRightValue = 8 - dataBits; /* number of right shifts ramp -> device */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
335 shiftRightValue += ((bytesPerEntry - 1) * 8); /* multibyte entries and the need to map a byte at a time most sig. to least sig. */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
336 for (indexChan = 0; indexChan < channels; indexChan++) /* for all the channels */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
337 for (indexEntry = 0; indexEntry < entries; indexEntry++) /* for all the entries */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
338 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
339 short currentShift = shiftRightValue; /* reset current bit shift */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
340 long temp = *((unsigned char *)pRamp + (indexChan << 8) + (indexEntry << 8) / entries); /* get data from ramp */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
341 short indexByte;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
342 for (indexByte = 0; indexByte < bytesPerEntry; indexByte++) /* for all bytes */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
343 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
344 if (currentShift < 0) /* shift data correctly for current byte */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
345 *(pGammaBase++) = temp << -currentShift;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
346 else
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
347 *(pGammaBase++) = temp >> currentShift;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
348 currentShift -= 8; /* increment shift to align to next less sig. byte */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
349 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
350 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
351 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
352
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
353 /* set gamma */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
354 gameRecRestore.csGTable = (Ptr) pTableGammaNew; /* setup restore record */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
355 csPtr = (Ptr) &gameRecRestore;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
356 err = Control((**hGD).gdRefNum, cscSetGamma, (Ptr) &csPtr); /* restore gamma (note, display drivers may delay returning from this until VBL) */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
357
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
358 if ((8 == (**(**hGD).gdPMap).pixelSize) && (noErr == err)) /* if successful and on an 8 bit device */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
359 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
360 hCTabDeviceColors = (**(**hGD).gdPMap).pmTable; /* do SetEntries to force CLUT update */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
361 setEntriesRec.csTable = (ColorSpec *) &(**hCTabDeviceColors).ctTable;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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parents: 1402
diff changeset
362 setEntriesRec.csStart = 0;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
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diff changeset
363 setEntriesRec.csCount = (**hCTabDeviceColors).ctSize;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
364 csPtr = (Ptr) &setEntriesRec;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
365 err = Control((**hGD).gdRefNum, cscSetEntries, (Ptr) &csPtr); /* SetEntries in CLUT */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
366 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
367 DisposeGammaTable ((Ptr) pTableGammaNew); /* dump table */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
368 if (noErr == err)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
369 return true;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
370 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
371 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
372 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
373 else /* set NULL gamma -> results in linear map */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
374 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
375 gameRecRestore.csGTable = (Ptr) NULL; /* setup restore record */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
376 csPtr = (Ptr) &gameRecRestore;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
377 err = Control((**hGD).gdRefNum, cscSetGamma, (Ptr) &csPtr); /* restore gamma */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
378
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
379 if ((8 == (**(**hGD).gdPMap).pixelSize) && (noErr == err)) /* if successful and on an 8 bit device */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
380 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
381 hCTabDeviceColors = (**(**hGD).gdPMap).pmTable; /* do SetEntries to force CLUT update */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
382 setEntriesRec.csTable = (ColorSpec *) &(**hCTabDeviceColors).ctTable;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
383 setEntriesRec.csStart = 0;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
384 setEntriesRec.csCount = (**hCTabDeviceColors).ctSize;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
385 csPtr = (Ptr) &setEntriesRec;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
386 err = Control((**hGD).gdRefNum, cscSetEntries, (Ptr) &csPtr); /* SetEntries in CLUT */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
387 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
388 if (noErr == err)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
389 return true;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
390 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
391 return false; /* memory allocation or device control failed if we get here */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
392 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
393
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
394 /* end of ADC Gamma Ramp support code... */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
395
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
396 static Ptr systemGammaPtr;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
397
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
398 void Mac_QuitGamma(_THIS)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
399 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
400 if (systemGammaPtr)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
401 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
402 RestoreSystemGammas(systemGammaPtr);
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
403 DisposeSystemGammas(&systemGammaPtr);
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
404 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
405 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
406
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
407 static unsigned char shiftedRamp[3 * 256];
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
408
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
409 int Mac_SetGammaRamp(_THIS, Uint16 *ramp)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
410 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
411 int i;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
412 if (!systemGammaPtr)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
413 systemGammaPtr = GetSystemGammas();
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
414 for (i = 0; i < 3 * 256; i++)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
415 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
416 shiftedRamp[i] = ramp[i] >> 8;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
417 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
418
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
419 if (SetDeviceGammaRampGD(GetMainDevice(), (Ptr) shiftedRamp))
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
420 return 0;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
421 else
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
422 return -1;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
423 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
424
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
425 int Mac_GetGammaRamp(_THIS, Uint16 *ramp)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
426 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
427 if (GetDeviceGammaRampGD(GetMainDevice(), (Ptr) shiftedRamp))
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
428 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
429 int i;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
430 for (i = 0; i < 3 * 256; i++)
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
431 {
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
432 ramp[i] = shiftedRamp[i] << 8;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
433 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
434 return 0;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
435 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
436 else
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
437 return -1;
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
438 }
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
439
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
440 #endif /* SDL_MACCLASSIC_GAMMA_SUPPORT */
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
441
7cdb1d7fc93b Support for Gamma Ramps on Mac OS Classic in both the macrom and macdsp video
Ryan C. Gordon <icculus@icculus.org>
parents: 1402
diff changeset
442