| 1 | /*------------------------------------------------------------------------------ |
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| 2 | # |
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| 3 | # MacOSª Sample Code |
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| 4 | # |
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| 5 | # Written by: Eric Anderson |
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| 6 | # AppleLink: ERIC3 |
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| 7 | # AOL: ERICTHREE |
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| 8 | # |
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| 9 | # Display Manager sample code |
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| 10 | # |
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| 11 | # RequestVideo |
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| 12 | # |
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| 13 | # RequestVideo.c - C Code |
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| 14 | # |
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| 15 | # Copyright © 1995 Apple Computer, Inc. |
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| 16 | # All rights reserved. |
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| 17 | # |
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| 18 | # 5/31/95 ewa Added RVGetCurrentVideoSetting and RVConfirmVideoRequest routines |
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| 19 | # to make it easy to revert back to where you came from and to give |
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| 20 | # the user a chance to confirm the new setting if the new mode was |
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| 21 | # valid (ie: the card supports it) but not safe (the monitor may not). |
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| 22 | # 5/24/95 ewa Give the kAllValidModesBit requestFlags option for safe only or all |
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| 23 | # valid resolution timings. |
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| 24 | # |
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| 25 | # |
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| 26 | # |
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| 27 | # Components: PlayVideo.c |
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| 28 | # RequestVideo.c |
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| 29 | # RequestVideo.h |
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| 30 | # RequestVideo.rsrc |
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| 31 | # |
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| 32 | # RequestVideo demonstrates the usage of the Display Manager introduced |
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| 33 | # with the PowerMacs and integrated into the system under System 7.5. With |
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| 34 | # the RequestVideo sample code library, developers will be able to explore |
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| 35 | # the Display Manager API by changing bit depth and screen resolution on |
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| 36 | # multisync displays on built-in, NuBus, and PCI based video. Display Manager 1.0 |
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| 37 | # is built into the Systems included with the first PowerMacs up through System 7.5. |
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| 38 | # Display Manager 2.0 is included with the release of the new PCI based PowerMacs, |
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| 39 | # and will be included in post 7.5 System Software releases. |
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| 40 | # |
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| 41 | # It is a good idea to reset the screen(s) to the original setting before exit |
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| 42 | # since the call to RVSetVideoAsScreenPrefs() may not do the right thing under |
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| 43 | # Display Manager 1.0 with certain video drivers. |
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| 44 | # |
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| 45 | # For information on the use of this sample code, please the documentation in the Read Me file |
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| 46 | ------------------------------------------------------------------------------*/ |
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| 47 | |
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| 48 | #include "RequestVideo.h" |
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| 49 | |
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| 50 | // Internal includes |
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| 51 | #include <Dialogs.h> |
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| 52 | #include <ROMDefs.h> |
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| 53 | #include <Devices.h> |
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| 54 | #include <Errors.h> |
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| 55 | #include <GestaltEqu.h> |
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| 56 | #include <Memory.h> |
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| 57 | #include <Palettes.h> |
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| 58 | #include <Slots.h> |
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| 59 | #include <StdIO.h> |
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| 60 | #include <Displays.h> |
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| 61 | |
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| 62 | #include <stdlib.h> |
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| 63 | |
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| 64 | //-------------------------------------------------------------- |
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| 65 | // |
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| 66 | // Internal defines, structs, typedefs, and routine declarations |
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| 67 | // |
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| 68 | //-------------------------------------------------------------- |
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| 69 | #define KMonoDev 0 // false (handy definitions for gdDevType settings) |
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| 70 | #define kColorDev 1 // true |
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| 71 | #define char_Enter 0x03 // for our filter proc |
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| 72 | #define char_Return 0x0D // |
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| 73 | #define iRevertItem 1 // User buttons |
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| 74 | #define iConfirmItem 2 // |
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| 75 | #define kSecondsToConfirm 8 // seconds before confirm dialog is taken down |
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| 76 | #define rConfirmSwtchAlrt 2735 // ID of alert dialog |
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| 77 | |
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| 78 | struct DepthInfo { |
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| 79 | VDSwitchInfoRec depthSwitchInfo; // This is the switch mode to choose this timing/depth |
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| 80 | VPBlock depthVPBlock; // VPBlock (including size, depth and format) |
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| 81 | }; |
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| 82 | typedef struct DepthInfo DepthInfo; |
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| 83 | |
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| 84 | struct ListIteratorDataRec { |
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| 85 | VDTimingInfoRec displayModeTimingInfo; // Contains timing flags and such |
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| 86 | unsigned long depthBlockCount; // How many depths available for a particular timing |
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| 87 | DepthInfo *depthBlocks; // Array of DepthInfo |
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| 88 | }; |
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| 89 | typedef struct ListIteratorDataRec ListIteratorDataRec; |
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| 90 | |
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| 91 | void GetRequestTheDM1Way ( VideoRequestRecPtr requestRecPtr, |
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| 92 | GDHandle walkDevice); |
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| 93 | |
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| 94 | void GetRequestTheDM2Way ( VideoRequestRecPtr requestRecPtr, |
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| 95 | GDHandle walkDevice, |
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| 96 | DMDisplayModeListIteratorUPP myModeIteratorProc, |
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| 97 | DMListIndexType theDisplayModeCount, |
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| 98 | DMListType *theDisplayModeList); |
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| 99 | |
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| 100 | pascal void ModeListIterator ( void *userData, |
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| 101 | DMListIndexType itemIndex, |
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| 102 | DMDisplayModeListEntryPtr displaymodeInfo); |
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| 103 | |
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| 104 | Boolean FindBestMatch ( VideoRequestRecPtr requestRecPtr, |
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| 105 | short bitDepth, |
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| 106 | unsigned long horizontal, |
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| 107 | unsigned long vertical); |
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| 108 | |
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| 109 | void GravitateMonitors (void); |
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| 110 | |
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| 111 | pascal Boolean ConfirmAlertFilter (DialogPtr dlg, EventRecord *evt, short *itemHit); |
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| 112 | |
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| 113 | Handle myHACK = 0; |
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| 114 | |
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| 115 | //-------------------------------------------------------------- |
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| 116 | // |
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| 117 | // Implementation of sample code |
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| 118 | // |
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| 119 | //-------------------------------------------------------------- |
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| 120 | OSErr RVSetVideoRequest (VideoRequestRecPtr requestRecPtr) |
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| 121 | { |
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| 122 | GDHandle aMonitor; |
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| 123 | Boolean displayMgrPresent; |
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| 124 | unsigned long displayMgrVersion; |
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| 125 | OSErr err; |
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| 126 | Boolean isColor; |
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| 127 | long value = 0; |
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| 128 | |
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| 129 | Gestalt(gestaltDisplayMgrVers, (long*)&displayMgrVersion); |
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| 130 | Gestalt(gestaltDisplayMgrAttr,&value); |
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| 131 | displayMgrPresent=value&(1<<gestaltDisplayMgrPresent); |
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| 132 | if (displayMgrPresent) |
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| 133 | { |
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| 134 | if (requestRecPtr->displayMode && requestRecPtr->depthMode) |
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| 135 | { |
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| 136 | if (requestRecPtr->availBitDepth == 1) // Based on avail bit depth, |
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| 137 | isColor = KMonoDev; // set the device to a mono device, or |
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| 138 | else isColor = kColorDev; // set the device to a color device |
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| 139 | SetDeviceAttribute(requestRecPtr->screenDevice,gdDevType,isColor); |
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| 140 | |
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| 141 | // see how many monitors we have, aMonitor will be nil if we have only one. |
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| 142 | aMonitor = DMGetFirstScreenDevice (dmOnlyActiveDisplays); // get the first guy |
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| 143 | aMonitor = DMGetNextScreenDevice ( aMonitor, dmOnlyActiveDisplays ); // get the next guy |
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| 144 | |
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| 145 | if (nil == aMonitor || displayMgrVersion >= 0x00020000) |
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| 146 | { |
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| 147 | // only call DMSetDisplayMode if we have one monitor or DM2.0 is installed |
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| 148 | // since DM1.0 does not automatically gravitate monitors and our gravitate code |
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| 149 | // is not implemented. |
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| 150 | |
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| 151 | err = DMSetDisplayMode( requestRecPtr->screenDevice, // GDevice |
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| 152 | requestRecPtr->displayMode, // DM1.0 uses this |
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| 153 | &requestRecPtr->depthMode, // DM1.0 uses this |
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| 154 | (unsigned long) &(requestRecPtr->switchInfo), // DM2.0 uses this rather than displayMode/depthMode combo |
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| 155 | myHACK); |
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| 156 | if (noErr == err) |
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| 157 | { |
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| 158 | // Do the monitor gravitate here if we are using a version less than DM2.0 |
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| 159 | if (displayMgrVersion < 0x00020000) |
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| 160 | GravitateMonitors (); |
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| 161 | } |
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| 162 | else if (kDMDriverNotDisplayMgrAwareErr == err) |
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| 163 | { |
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| 164 | // DM not supported by driver, so all we can do is set the bit depth |
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| 165 | err = SetDepth (requestRecPtr->screenDevice, requestRecPtr->depthMode, gdDevType, isColor); |
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| 166 | } |
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| 167 | } |
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| 168 | else |
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| 169 | { |
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| 170 | // we have more than one monitor and DM1.0 is installed, so all we can do is set the bit depth |
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| 171 | err = SetDepth (requestRecPtr->screenDevice, requestRecPtr->depthMode, gdDevType, isColor); |
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| 172 | } |
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| 173 | |
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| 174 | return (err); // we did try to set the request |
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| 175 | } |
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| 176 | } |
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| 177 | return (-1); // return a generic error |
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| 178 | } |
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| 179 | |
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| 180 | OSErr HackSetRequest (VideoRequestRecPtr requestRecPtr) |
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| 181 | { |
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| 182 | DMBeginConfigureDisplays(&myHACK); |
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| 183 | return RVSetVideoRequest(requestRecPtr); |
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| 184 | } |
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| 185 | |
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| 186 | OSErr HackRestoreRequest (VideoRequestRecPtr requestRecPtr) |
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| 187 | { |
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| 188 | OSErr ret; |
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| 189 | |
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| 190 | ret = RVSetVideoRequest(requestRecPtr); |
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| 191 | DMEndConfigureDisplays(myHACK); |
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| 192 | return ret; |
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| 193 | } |
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| 194 | |
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| 195 | OSErr RVGetCurrentVideoSetting (VideoRequestRecPtr requestRecPtr) |
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| 196 | { |
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| 197 | unsigned long displayMgrVersion; |
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| 198 | OSErr error = paramErr; |
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| 199 | CntrlParam pBlock; |
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| 200 | VDSwitchInfoRec switchInfo; |
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| 201 | AuxDCEHandle theDCE; |
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| 202 | VDSwitchInfoRec videoMode; |
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| 203 | |
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| 204 | requestRecPtr->availBitDepth = 0; // init to default - you can do it if it is important to you |
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| 205 | requestRecPtr->availHorizontal = 0; |
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| 206 | requestRecPtr->availVertical = 0; |
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| 207 | requestRecPtr->availFlags = 0; |
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| 208 | requestRecPtr->displayMode = -1; |
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| 209 | requestRecPtr->depthMode = -1; |
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| 210 | requestRecPtr->switchInfo.csMode = 0; |
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| 211 | requestRecPtr->switchInfo.csData = 0; |
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| 212 | requestRecPtr->switchInfo.csPage = 0; |
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| 213 | requestRecPtr->switchInfo.csBaseAddr = 0; |
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| 214 | requestRecPtr->switchInfo.csReserved = 0; |
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| 215 | |
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| 216 | Gestalt(gestaltDisplayMgrVers, (long*)&displayMgrVersion); |
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| 217 | if (requestRecPtr->screenDevice) |
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| 218 | { |
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| 219 | if (displayMgrVersion >= 0x00020000) |
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| 220 | { // get the info the DM 2.0 way |
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| 221 | error = DMGetDisplayMode(requestRecPtr->screenDevice, &switchInfo); |
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| 222 | if (noErr == error) |
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| 223 | { |
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| 224 | requestRecPtr->depthMode = switchInfo.csMode; |
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| 225 | requestRecPtr->displayMode = switchInfo.csData; |
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| 226 | requestRecPtr->switchInfo.csMode = switchInfo.csMode; |
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| 227 | requestRecPtr->switchInfo.csData = switchInfo.csData; |
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| 228 | } |
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| 229 | return (error); // we (maybe) set the world back to a known setting |
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| 230 | } |
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| 231 | else |
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| 232 | { // get the info the DM 1.0 way |
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| 233 | videoMode.csMode = -1; // init to bogus value |
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| 234 | videoMode.csData = -1; // init to bogus value |
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| 235 | pBlock.ioNamePtr = nil; |
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| 236 | pBlock.ioCRefNum = (*(requestRecPtr->screenDevice))->gdRefNum; |
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| 237 | pBlock.csCode = cscGetCurMode; |
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| 238 | *(Ptr *)&pBlock.csParam[0] = (Ptr)&videoMode; |
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| 239 | |
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| 240 | error = PBStatusSync((ParmBlkPtr )&pBlock); // ask the driver first....since we trust it the most |
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| 241 | |
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| 242 | if ( noErr == error && ((-1 == videoMode.csMode) || (-1 == videoMode.csData)) ) |
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| 243 | error = statusErr; |
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| 244 | |
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| 245 | if (noErr != error) // if the driver has no clue fill it videoMode by hand as a last resort |
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| 246 | { |
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| 247 | theDCE = (AuxDCEHandle)GetDCtlEntry((*(requestRecPtr->screenDevice))->gdRefNum); |
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| 248 | |
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| 249 | if( theDCE ) |
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| 250 | { |
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| 251 | videoMode.csData = (unsigned char)(*theDCE)->dCtlSlotId; |
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| 252 | videoMode.csMode = (*(requestRecPtr->screenDevice))->gdMode; |
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| 253 | error = noErr; |
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| 254 | } |
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| 255 | } |
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| 256 | if (noErr == error) // Set our data |
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| 257 | { |
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| 258 | requestRecPtr->displayMode = videoMode.csData; |
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| 259 | requestRecPtr->depthMode = videoMode.csMode; |
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| 260 | requestRecPtr->switchInfo.csMode = videoMode.csMode; |
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| 261 | requestRecPtr->switchInfo.csData = videoMode.csData; |
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| 262 | } |
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| 263 | return (error); // we (maybe) set the world back to a known setting |
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| 264 | } |
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| 265 | } |
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| 266 | return (-1); |
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| 267 | } |
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| 268 | |
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| 269 | OSErr RVRequestVideoSetting (VideoRequestRecPtr requestRecPtr) |
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| 270 | { |
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| 271 | Boolean displayMgrPresent; |
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| 272 | short iCount = 0; // just a counter of GDevices we have seen |
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| 273 | DMDisplayModeListIteratorUPP myModeIteratorProc = nil; // for DM2.0 searches |
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| 274 | SpBlock spBlock; |
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| 275 | Boolean suppliedGDevice; |
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| 276 | DisplayIDType theDisplayID; // for DM2.0 searches |
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| 277 | DMListIndexType theDisplayModeCount; // for DM2.0 searches |
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| 278 | DMListType theDisplayModeList; // for DM2.0 searches |
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| 279 | long value = 0; |
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| 280 | GDHandle walkDevice = nil; // for everybody |
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| 281 | |
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| 282 | Gestalt(gestaltDisplayMgrAttr,&value); |
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| 283 | displayMgrPresent=value&(1<<gestaltDisplayMgrPresent); |
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| 284 | displayMgrPresent=displayMgrPresent && (SVersion(&spBlock)==noErr); // need slot manager |
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| 285 | if (displayMgrPresent) |
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| 286 | { |
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| 287 | // init the needed data before we start |
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| 288 | if (requestRecPtr->screenDevice) // user wants a specifc device? |
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| 289 | { |
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| 290 | walkDevice = requestRecPtr->screenDevice; |
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| 291 | suppliedGDevice = true; |
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| 292 | } |
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| 293 | else |
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| 294 | { |
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| 295 | walkDevice = DMGetFirstScreenDevice (dmOnlyActiveDisplays); // for everybody |
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| 296 | suppliedGDevice = false; |
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| 297 | } |
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| 298 | |
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| 299 | myModeIteratorProc = NewDMDisplayModeListIteratorProc(ModeListIterator); // for DM2.0 searches |
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| 300 | |
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| 301 | // Note that we are hosed if somebody changes the gdevice list behind our backs while we are iterating.... |
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| 302 | // ...now do the loop if we can start |
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| 303 | if( walkDevice && myModeIteratorProc) do // start the search |
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| 304 | { |
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| 305 | iCount++; // GDevice we are looking at (just a counter) |
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| 306 | if( noErr == DMGetDisplayIDByGDevice( walkDevice, &theDisplayID, false ) ) // DM1.0 does not need this, but it fits in the loop |
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| 307 | { |
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| 308 | theDisplayModeCount = 0; // for DM2.0 searches |
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| 309 | if (noErr == DMNewDisplayModeList(theDisplayID, 0, 0, &theDisplayModeCount, &theDisplayModeList) ) |
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| 310 | { |
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| 311 | // search NuBus & PCI the new kool way through Display Manager 2.0 |
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| 312 | GetRequestTheDM2Way (requestRecPtr, walkDevice, myModeIteratorProc, theDisplayModeCount, &theDisplayModeList); |
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| 313 | DMDisposeList(theDisplayModeList); // now toss the lists for this gdevice and go on to the next one |
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| 314 | } |
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| 315 | else |
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| 316 | { |
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| 317 | // search NuBus only the old disgusting way through the slot manager |
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| 318 | GetRequestTheDM1Way (requestRecPtr, walkDevice); |
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| 319 | } |
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| 320 | } |
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| 321 | } while ( !suppliedGDevice && nil != (walkDevice = DMGetNextScreenDevice ( walkDevice, dmOnlyActiveDisplays )) ); // go until no more gdevices |
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| 322 | if( myModeIteratorProc ) |
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| 323 | DisposeRoutineDescriptor(myModeIteratorProc); |
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| 324 | return (noErr); // we were able to get the look for a match |
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| 325 | } |
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| 326 | return (-1); // return a generic error |
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| 327 | } |
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| 328 | |
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| 329 | void GetRequestTheDM1Way (VideoRequestRecPtr requestRecPtr, GDHandle walkDevice) |
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| 330 | { |
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| 331 | AuxDCEHandle myAuxDCEHandle; |
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| 332 | unsigned long depthMode; |
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| 333 | unsigned long displayMode; |
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| 334 | OSErr error; |
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| 335 | OSErr errorEndOfTimings; |
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| 336 | short height; |
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| 337 | short jCount = 0; |
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| 338 | Boolean modeOk; |
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| 339 | SpBlock spAuxBlock; |
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| 340 | SpBlock spBlock; |
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| 341 | unsigned long switchFlags; |
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| 342 | VPBlock *vpData; |
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| 343 | short width; |
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| 344 | |
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| 345 | myAuxDCEHandle = (AuxDCEHandle) GetDCtlEntry((**walkDevice).gdRefNum); |
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| 346 | spBlock.spSlot = (**myAuxDCEHandle).dCtlSlot; |
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| 347 | spBlock.spID = (**myAuxDCEHandle).dCtlSlotId; |
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| 348 | spBlock.spExtDev = (**myAuxDCEHandle).dCtlExtDev; |
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| 349 | spBlock.spHwDev = 0; // we are going to get this pup |
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| 350 | spBlock.spParamData = 1<<foneslot; // this slot, enabled, and it better be here. |
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| 351 | spBlock.spTBMask = 3; // don't have constants for this yet |
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| 352 | errorEndOfTimings = SGetSRsrc(&spBlock); // get the spDrvrHW so we know the ID of this puppy. This is important |
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| 353 | // since some video cards support more than one display, and the spDrvrHW |
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| 354 | // ID can, and will, be used to differentiate them. |
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| 355 | |
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| 356 | if ( noErr == errorEndOfTimings ) |
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| 357 | { |
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| 358 | // reinit the param block for the SGetTypeSRsrc loop, keep the spDrvrHW we just got |
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| 359 | spBlock.spID = 0; // start at zero, |
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| 360 | spBlock.spTBMask = 2; // 0b0010 - ignore DrvrSW - why ignore the SW side? Is it not important for video? |
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| 361 | spBlock.spParamData = (1<<fall) + (1<<foneslot) + (1<<fnext); // 0b0111 - this slot, enabled or disabled, so we even get 640x399 on Blackbird |
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| 362 | spBlock.spCategory=catDisplay; |
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| 363 | spBlock.spCType=typeVideo; |
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| 364 | errorEndOfTimings = SGetTypeSRsrc(&spBlock); // but only on 7.0 systems, not a problem since we require DM1.0 |
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| 365 | |
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| 366 | // now, loop through all the timings for this GDevice |
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| 367 | if ( noErr == errorEndOfTimings ) do |
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| 368 | { |
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| 369 | // now, loop through all possible depth modes for this timing mode |
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| 370 | displayMode = (unsigned char)spBlock.spID; // "timing mode, ie:resource ref number" |
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| 371 | for (jCount = firstVidMode; jCount<= sixthVidMode; jCount++) |
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| 372 | { |
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| 373 | depthMode = jCount; // vid mode |
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| 374 | error = DMCheckDisplayMode(walkDevice,displayMode,depthMode,&switchFlags,0,&modeOk); |
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| 375 | |
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| 376 | // only if the mode is safe or we override it with the kAllValidModesBit request flag |
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| 377 | if ( noErr == error && |
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| 378 | modeOk && |
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| 379 | ( switchFlags & 1<<kNoSwitchConfirmBit || |
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| 380 | requestRecPtr->requestFlags & 1<<kAllValidModesBit |
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| 381 | ) |
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| 382 | ) |
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| 383 | { |
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| 384 | // have a good displayMode/depthMode combo - now lets look inside |
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| 385 | spAuxBlock = spBlock; // don't ruin the iteration spBlock!! |
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| 386 | spAuxBlock.spID = depthMode; // vid mode |
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| 387 | error=SFindStruct(&spAuxBlock); // get back a new spsPointer |
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| 388 | if (noErr == error) // keep going if no errorÉ |
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| 389 | { |
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| 390 | spAuxBlock.spID = 0x01; // mVidParams request |
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| 391 | error=SGetBlock (&spAuxBlock); // use the new spPointer and get back...a NewPtr'ed spResult |
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| 392 | if (noErr == error) // Ékeep going if no errorÉ |
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| 393 | { // We have data! lets have a look |
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| 394 | vpData = (VPBlock*)spAuxBlock.spResult; |
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| 395 | height = vpData->vpBounds.bottom; // left and top are usually zero |
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| 396 | width = vpData->vpBounds.right; |
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| 397 | |
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| 398 | if (FindBestMatch (requestRecPtr, vpData->vpPixelSize, vpData->vpBounds.right, vpData->vpBounds.bottom)) |
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| 399 | { |
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| 400 | requestRecPtr->screenDevice = walkDevice; |
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| 401 | requestRecPtr->availBitDepth = vpData->vpPixelSize; |
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| 402 | requestRecPtr->availHorizontal = vpData->vpBounds.right; |
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| 403 | requestRecPtr->availVertical = vpData->vpBounds.bottom; |
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| 404 | requestRecPtr->displayMode = displayMode; |
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| 405 | requestRecPtr->depthMode = depthMode; |
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| 406 | requestRecPtr->switchInfo.csMode = depthMode; // fill in for completeness |
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| 407 | requestRecPtr->switchInfo.csData = displayMode; |
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| 408 | requestRecPtr->switchInfo.csPage = 0; |
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| 409 | requestRecPtr->switchInfo.csBaseAddr = 0; |
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| 410 | requestRecPtr->switchInfo.csReserved = 0; |
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| 411 | if (switchFlags & 1<<kNoSwitchConfirmBit) |
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| 412 | requestRecPtr->availFlags = 0; // mode safe |
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| 413 | else requestRecPtr->availFlags = 1<<kModeValidNotSafeBit; // mode valid but not safe, requires user validation of mode switch |
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| 414 | } |
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| 415 | |
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| 416 | if (spAuxBlock.spResult) DisposePtr ((Ptr)spAuxBlock.spResult); // toss this puppy when done |
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| 417 | } |
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| 418 | } |
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| 419 | } |
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| 420 | } |
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| 421 | // go around again, looking for timing modes for this GDevice |
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| 422 | spBlock.spTBMask = 2; // ignore DrvrSW |
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| 423 | spBlock.spParamData = (1<<fall) + (1<<foneslot) + (1<<fnext); // next resource, this slot, whether enabled or disabled |
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| 424 | errorEndOfTimings = SGetTypeSRsrc(&spBlock); // and get the next timing mode |
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| 425 | } while ( noErr == errorEndOfTimings ); // until the end of this GDevice |
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| 426 | } |
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| 427 | |
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| 428 | } |
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| 429 | |
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| 430 | pascal void ModeListIterator(void *userData, DMListIndexType, DMDisplayModeListEntryPtr displaymodeInfo) |
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| 431 | { |
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| 432 | unsigned long depthCount; |
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| 433 | short iCount; |
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| 434 | ListIteratorDataRec *myIterateData = (ListIteratorDataRec*) userData; |
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| 435 | DepthInfo *myDepthInfo; |
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| 436 | |
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| 437 | // set user data in a round about way |
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| 438 | myIterateData->displayModeTimingInfo = *displaymodeInfo->displayModeTimingInfo; |
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| 439 | |
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| 440 | // now get the DMDepthInfo info into memory we own |
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| 441 | depthCount = displaymodeInfo->displayModeDepthBlockInfo->depthBlockCount; |
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| 442 | myDepthInfo = (DepthInfo*)NewPtrClear(depthCount * sizeof(DepthInfo)); |
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| 443 | |
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| 444 | // set the info for the caller |
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| 445 | myIterateData->depthBlockCount = depthCount; |
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| 446 | myIterateData->depthBlocks = myDepthInfo; |
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| 447 | |
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| 448 | // and fill out all the entries |
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| 449 | if (depthCount) for (iCount=0; iCount < depthCount; iCount++) |
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| 450 | { |
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| 451 | myDepthInfo[iCount].depthSwitchInfo = |
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| 452 | *displaymodeInfo->displayModeDepthBlockInfo->depthVPBlock[iCount].depthSwitchInfo; |
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| 453 | myDepthInfo[iCount].depthVPBlock = |
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| 454 | *displaymodeInfo->displayModeDepthBlockInfo->depthVPBlock[iCount].depthVPBlock; |
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| 455 | } |
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| 456 | } |
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| 457 | |
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| 458 | void GetRequestTheDM2Way ( VideoRequestRecPtr requestRecPtr, |
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| 459 | GDHandle walkDevice, |
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| 460 | DMDisplayModeListIteratorUPP myModeIteratorProc, |
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| 461 | DMListIndexType theDisplayModeCount, |
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| 462 | DMListType *theDisplayModeList) |
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| 463 | { |
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| 464 | short jCount; |
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| 465 | short kCount; |
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| 466 | ListIteratorDataRec searchData; |
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| 467 | |
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| 468 | searchData.depthBlocks = nil; |
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| 469 | // get the mode lists for this GDevice |
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| 470 | for (jCount=0; jCount<theDisplayModeCount; jCount++) // get info on all the resolution timings |
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| 471 | { |
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| 472 | DMGetIndexedDisplayModeFromList(*theDisplayModeList, jCount, 0, myModeIteratorProc, &searchData); |
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| 473 | |
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| 474 | // for all the depths for this resolution timing (mode)... |
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| 475 | if (searchData.depthBlockCount) for (kCount = 0; kCount < searchData.depthBlockCount; kCount++) |
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| 476 | { |
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| 477 | // only if the mode is valid and is safe or we override it with the kAllValidModesBit request flag |
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| 478 | if ( searchData.displayModeTimingInfo.csTimingFlags & 1<<kModeValid && |
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| 479 | ( searchData.displayModeTimingInfo.csTimingFlags & 1<<kModeSafe || |
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| 480 | requestRecPtr->requestFlags & 1<<kAllValidModesBit |
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| 481 | ) |
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| 482 | ) |
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| 483 | { |
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| 484 | if (FindBestMatch ( requestRecPtr, |
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| 485 | searchData.depthBlocks[kCount].depthVPBlock.vpPixelSize, |
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| 486 | searchData.depthBlocks[kCount].depthVPBlock.vpBounds.right, |
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| 487 | searchData.depthBlocks[kCount].depthVPBlock.vpBounds.bottom)) |
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| 488 | { |
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| 489 | requestRecPtr->screenDevice = walkDevice; |
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| 490 | requestRecPtr->availBitDepth = searchData.depthBlocks[kCount].depthVPBlock.vpPixelSize; |
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| 491 | requestRecPtr->availHorizontal = searchData.depthBlocks[kCount].depthVPBlock.vpBounds.right; |
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| 492 | requestRecPtr->availVertical = searchData.depthBlocks[kCount].depthVPBlock.vpBounds.bottom; |
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| 493 | |
|---|
| 494 | // now set the important info for DM to set the display |
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| 495 | requestRecPtr->depthMode = searchData.depthBlocks[kCount].depthSwitchInfo.csMode; |
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| 496 | requestRecPtr->displayMode = searchData.depthBlocks[kCount].depthSwitchInfo.csData; |
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| 497 | requestRecPtr->switchInfo = searchData.depthBlocks[kCount].depthSwitchInfo; |
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| 498 | if (searchData.displayModeTimingInfo.csTimingFlags & 1<<kModeSafe) |
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| 499 | requestRecPtr->availFlags = 0; // mode safe |
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| 500 | else requestRecPtr->availFlags = 1<<kModeValidNotSafeBit; // mode valid but not safe, requires user validation of mode switch |
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| 501 | |
|---|
| 502 | } |
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| 503 | } |
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| 504 | |
|---|
| 505 | } |
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| 506 | |
|---|
| 507 | if (searchData.depthBlocks) |
|---|
| 508 | { |
|---|
| 509 | DisposePtr ((Ptr)searchData.depthBlocks); // toss for this timing mode of this gdevice |
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| 510 | searchData.depthBlocks = nil; // init it just so we know |
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| 511 | } |
|---|
| 512 | } |
|---|
| 513 | } |
|---|
| 514 | |
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| 515 | Boolean FindBestMatch (VideoRequestRecPtr requestRecPtr, short bitDepth, unsigned long horizontal, unsigned long vertical) |
|---|
| 516 | { |
|---|
| 517 | // ¥¥ do the big comparison ¥¥ |
|---|
| 518 | // first time only if (no mode yet) and |
|---|
| 519 | // (bounds are greater/equal or kMaximizeRes not set) and |
|---|
| 520 | // (depth is less/equal or kShallowDepth not set) and |
|---|
| 521 | // (request match or kAbsoluteRequest not set) |
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| 522 | if ( nil == requestRecPtr->displayMode |
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| 523 | && |
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| 524 | ( (horizontal >= requestRecPtr->reqHorizontal && |
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| 525 | vertical >= requestRecPtr->reqVertical) |
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| 526 | || |
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| 527 | !(requestRecPtr->requestFlags & 1<<kMaximizeResBit) |
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| 528 | ) |
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| 529 | && |
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| 530 | ( bitDepth <= requestRecPtr->reqBitDepth || |
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| 531 | !(requestRecPtr->requestFlags & 1<<kShallowDepthBit) |
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| 532 | ) |
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| 533 | && |
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| 534 | ( (horizontal == requestRecPtr->reqHorizontal && |
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| 535 | vertical == requestRecPtr->reqVertical && |
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| 536 | bitDepth == requestRecPtr->reqBitDepth) |
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| 537 | || |
|---|
| 538 | !(requestRecPtr->requestFlags & 1<<kAbsoluteRequestBit) |
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| 539 | ) |
|---|
| 540 | ) |
|---|
| 541 | { |
|---|
| 542 | // go ahead and set the new values |
|---|
| 543 | return (true); |
|---|
| 544 | } |
|---|
| 545 | else // can we do better than last time? |
|---|
| 546 | { |
|---|
| 547 | // if (kBitDepthPriority set and avail not equal req) and |
|---|
| 548 | // ((depth is greater avail and depth is less/equal req) or kShallowDepth not set) and |
|---|
| 549 | // (avail depth less reqested and new greater avail) |
|---|
| 550 | // (request match or kAbsoluteRequest not set) |
|---|
| 551 | if ( ( requestRecPtr->requestFlags & 1<<kBitDepthPriorityBit && |
|---|
| 552 | requestRecPtr->availBitDepth != requestRecPtr->reqBitDepth |
|---|
| 553 | ) |
|---|
| 554 | && |
|---|
| 555 | ( ( bitDepth > requestRecPtr->availBitDepth && |
|---|
| 556 | bitDepth <= requestRecPtr->reqBitDepth |
|---|
| 557 | ) |
|---|
| 558 | || |
|---|
| 559 | !(requestRecPtr->requestFlags & 1<<kShallowDepthBit) |
|---|
| 560 | ) |
|---|
| 561 | && |
|---|
| 562 | ( requestRecPtr->availBitDepth < requestRecPtr->reqBitDepth && |
|---|
| 563 | bitDepth > requestRecPtr->availBitDepth |
|---|
| 564 | ) |
|---|
| 565 | && |
|---|
| 566 | ( (horizontal == requestRecPtr->reqHorizontal && |
|---|
| 567 | vertical == requestRecPtr->reqVertical && |
|---|
| 568 | bitDepth == requestRecPtr->reqBitDepth) |
|---|
| 569 | || |
|---|
| 570 | !(requestRecPtr->requestFlags & 1<<kAbsoluteRequestBit) |
|---|
| 571 | ) |
|---|
| 572 | ) |
|---|
| 573 | { |
|---|
| 574 | // go ahead and set the new values |
|---|
| 575 | return (true); |
|---|
| 576 | } |
|---|
| 577 | else |
|---|
| 578 | { |
|---|
| 579 | // match resolution: minimize Æh & Æv |
|---|
| 580 | if ( abs((requestRecPtr->reqHorizontal - horizontal)) <= |
|---|
| 581 | abs((requestRecPtr->reqHorizontal - requestRecPtr->availHorizontal)) && |
|---|
| 582 | abs((requestRecPtr->reqVertical - vertical)) <= |
|---|
| 583 | abs((requestRecPtr->reqVertical - requestRecPtr->availVertical)) |
|---|
| 584 | ) |
|---|
| 585 | { |
|---|
| 586 | // now we have a smaller or equal delta |
|---|
| 587 | // if (h or v greater/equal to request or kMaximizeRes not set) |
|---|
| 588 | if ( (horizontal >= requestRecPtr->reqHorizontal && |
|---|
| 589 | vertical >= requestRecPtr->reqVertical) |
|---|
| 590 | || |
|---|
| 591 | !(requestRecPtr->requestFlags & 1<<kMaximizeResBit) |
|---|
| 592 | ) |
|---|
| 593 | { |
|---|
| 594 | // if (depth is equal or kBitDepthPriority not set) and |
|---|
| 595 | // (depth is less/equal or kShallowDepth not set) and |
|---|
| 596 | // ([h or v not equal] or [avail depth less reqested and new greater avail] or depth equal avail) and |
|---|
| 597 | // (request match or kAbsoluteRequest not set) |
|---|
| 598 | if ( ( requestRecPtr->availBitDepth == bitDepth || |
|---|
| 599 | !(requestRecPtr->requestFlags & 1<<kBitDepthPriorityBit) |
|---|
| 600 | ) |
|---|
| 601 | && |
|---|
| 602 | ( bitDepth <= requestRecPtr->reqBitDepth || |
|---|
| 603 | !(requestRecPtr->requestFlags & 1<<kShallowDepthBit) |
|---|
| 604 | ) |
|---|
| 605 | && |
|---|
| 606 | ( (requestRecPtr->availHorizontal != horizontal || |
|---|
| 607 | requestRecPtr->availVertical != vertical) |
|---|
| 608 | || |
|---|
| 609 | (requestRecPtr->availBitDepth < requestRecPtr->reqBitDepth && |
|---|
| 610 | bitDepth > requestRecPtr->availBitDepth) |
|---|
| 611 | || |
|---|
| 612 | (bitDepth == requestRecPtr->reqBitDepth) |
|---|
| 613 | ) |
|---|
| 614 | && |
|---|
| 615 | ( (horizontal == requestRecPtr->reqHorizontal && |
|---|
| 616 | vertical == requestRecPtr->reqVertical && |
|---|
| 617 | bitDepth == requestRecPtr->reqBitDepth) |
|---|
| 618 | || |
|---|
| 619 | !(requestRecPtr->requestFlags & 1<<kAbsoluteRequestBit) |
|---|
| 620 | ) |
|---|
| 621 | ) |
|---|
| 622 | { |
|---|
| 623 | // go ahead and set the new values |
|---|
| 624 | return (true); |
|---|
| 625 | } |
|---|
| 626 | } |
|---|
| 627 | } |
|---|
| 628 | } |
|---|
| 629 | } |
|---|
| 630 | return (false); |
|---|
| 631 | } |
|---|
| 632 | |
|---|
| 633 | void GravitateMonitors (void) |
|---|
| 634 | { |
|---|
| 635 | // do the magic gravitation here |
|---|
| 636 | } |
|---|
