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Mac OS uses the data structures listed in this section to communicate with graphics drivers. The interface file Video.h contains the latest information about these structures.
struct VPBlock{
long vpBaseOffset; /*always 0 for Slot Mgr independent drivers*/
short vpRowBytes; /*width of each row of video memory*/
Rect pBounds; /*Bounds Rect for the video display*/
short vpVersion; /*Pixel Map version number*/
short vpPackType;
long vpPackSize;
long vpHRes; /*horizres of the device (pixels per inch)*/
long vpVRes; /*vertres of the device (pixels per inch)*/
short vpPixelType; /*defines the pixel type*/
short vpPixelSize; /*number of bits in pixel*/
short vpCmpCount; /*number of components in pixel*/
short vpCmpSize; /*number of bits per component*/
long vpPlaneBytes; /*offset from one plane to the next*/
};
In PCI-based graphics drivers, the vpBaseOffset is always 0. The base address of video RAM for the current page, is the BaseAddress value returned by the GetCurrentMode routine.
struct VDEntryRecord{
Ptr csTable; /*pointer to color table entry*/
};
struct VDGrayRecord{
Boolean csMode; /*same as GDDevType value (0=color,1=mono)*/
SInt8 filler;
};
struct VDSetEntryRecord{
ColorSpec *csTable; /*pointer to an array of color specs*/
short csStart; /*which spec in array to start with, or-1*/
short csCount; /*number of colors pecentries to set*/
};
struct VDGammaRecord{
Ptr csGTable; /*pointer to gamma table*/
};
struct VDSwitchInfoRec{
UInt16 csMode; /*relative bit depth*/
UInt32 csData; /*display mode ID*/
UInt16 csPage; /*page to switch in*/
Ptr csBaseAddr; /*base address of page (return value)*/
UInt32 csReserved; /*reserved (set to 0)*/
};
struct VDTimingInfoRec{
UInt32 csTimingMode; /*timing mode (alaInitGDevice)*/
UInt32 csTimingReserved; /*reserved*/
UInt32 csTimingFormat; /*what format is the timing info*/
UInt32 csTimingData; /*data supplied by driver*/
UInt32 csTimingFlags; /*information*/
};
struct VDDisplayConnectInfoRec{
UInt16 csDisplayType; /*type of display connected*/
UInt8 csConnectTaggedType; /*typeoftagging*/
UInt8 csConnectTaggedData; /*taggingdata*/
UInt32 csConnectFlags; /*info about the connection*/
UInt32 csDisplayComponent; /*display component if card has direct */
/* connection todisplay (future)*/
UInt32 csConnectReserved; /*reserved*/
};
struct VDPageInfo{
short csMode;
long csData;
short csPage;
Ptr csBaseAddr;
};
struct VDResolutionInfoRec {
DisplayModeID csPreviousDisplayModeID; /* ID of the previous resolution */
/* in a chain */
DisplayModeID csDisplayModeID; /* ID of the next resolution */
unsigned long csHorizontalPixels; /* # of pixels in a horizontal */
/* line at the max depth */
unsigned long csVerticalLines; /* # of lines in a screen at the */
/* max depth */
Fixed csRefreshRate; /* vertical refresh rate, Hz */
DepthMode csMaxDepthMode; /* 0x80-based max bit depth */
unsigned long csResolutionFlags; /* flag bits */
unsigned long csReserved; /* reserved */
};
typedef struct VDResolutionInfoRec VDResolutionInfoRec;
/* csResolutionFlags bit flags for VDResolutionInfoRec*/
enum {
kResolutionHasMultipleDepthSizes = 0
/* this mode has different csHorizontalPixels, csVerticalLines at */
/* different depths (usually slightly larger at lower depths) */
};
struct VDVideoParametersInfoRec{
DisplayModeID csDisplayModeID; /*ID of the target resolution*/
DepthMode csDepthMode; /*resolution's relative bit depth*/
VPBlockPtr csVPBlockPtr; /*pointer to video parameter block*/
UInt32 csPageCount; /*number of pages supported by the
resolution*/
VideoDeviceType csDeviceType; /*direct, fixed,orCLUT*/
UInt32 csReserved; /*reserved*/
};
struct VDFlagRecord{
SInt8csMode; /*interrupts enabled or disabled*/
SInt8filler; /*reserved*/
};
struct VDGetGammaListRec{
GammaTableID csPreviousGammaTableID; /*ID of previous gamma table*/
GammaTableID csGammaTableID; /*ID of gamma table following
csPreviousDisplayModeID*/
UInt32 csGammaTableSize; /*size of gamma table in bytes*/
char csGammaTableName[32]; /*gamma table name (C string)*/
};
struct VDRetrieveGammaRec{
GammaTableID csGammaTableID; /*ID of gamma table to retrieve*/
GammaTbl *csGammaTablePtr; /*location to copy desired gamma to*/
};
struct VDSupportsHardwareCursorRec{
Boolean csSupportsHardwareCursor; /*true if HW ursor supported*/
SInt8 filler;
};
struct VDSetHardwareCursorRec{
void *csCursorRef;
};
struct VDDrawHardwareCursorRec{
SInt32 csCursorX;
SInt32 csCursorY;
SInt32 csCursorVisible;
};
struct VDSyncInfoRec{
UInt8 csMode;
UInt8 csFlags;
};
struct VDConvolutionInfoRec{
DisplayModeID csDisplayModeID;/*ID of resolution we want info on*/
DepthMode csDepthMode;/*Relative bit depth*/
UInt32 csPage;
UInt32 csFlags;
UInt32 csReserved;
};
struct VDPowerStateRec {
unsigned long powerState;
unsigned long powerFlags;
unsigned long powerReserved1;
unsigned long powerReserved2;
};
typedef UInt32 DisplayModeID;
typedef UInt32 VideoDeviceType;
typedef UInt32 GammaTableID;
/* Power Mode constants for VDPowerStateRec.powerState.*/
kAVPowerOff,
kAVPowerStandby,
kAVPowerSuspend,
kAVPowerOn
};
enum {
/* Power Mode constants for VDPowerStateRec.powerFlags.*/
kPowerStateNeedsRefreshBit= 0,
kPowerStateNeedsRefreshMask= (1L << 0)
};
/*bit definitions for the get/set sync call*/
enum{
kDisableHorizontalSyncBit=0,
kDisableVerticalSyncBit =1,
kDisableCompositeSyncBit=2,
kEnableSyncOnBlue =3,
kEnableSyncOnGreen =4,
kEnableSyncOnRed =5,
kNoSeparateSyncControlBit=6,
kHorizontalSyncMask =0x01,
kVerticalSyncMask =0x02,
kCompositeSyncMask =0x04,
kDPMSSyncMask =0x7,
kSyncOnBlueMask =0x08,
kSyncOnGreenMask =0x10,
kSyncOnRedMask =0x20,
kSyncOnMask =0x38
};
/*Bit definitions for the get/set convolution call*/
enum{
kConvolved=0,
kLiveVideoPassThru=1,
kConvolvedMask =0x01,
kLiveVideoPassThruMask=0x02
};
/*csTimingFormat values in VDTimingInfo*/
/*timing info follows DeclROM format*/
enum{
kDeclROMtables='decl'
};
enum{
timingInvalid = 0, /* unknown timing; user must confirm*/
timingApple_512x384_60hz = 130, /* 512x384 (60 Hz) Rubik timing*/
timingApple_560x384_60hz = 135, /* 560x384 (60 Hz) Rubik-560 timing*/
timingApple_640x480_67hz = 140, /* 640x480 (67 Hz) HR timing*/
timingApple_640x400_67hz = 145, /* 640x400 (67 Hz) HR-400 timing*/
timingVESA_640x480_60hz = 150, /* 640x480 (60 Hz) VGA timing*/
timingApple_640x870_75hz = 160, /* 640x870 (75 Hz) FPD timing*/
timingApple_640x818_75hz = 165, /* 640x818 (75 Hz) FPD-818 timing*/
timingApple_832x624_75hz = 170, /* 832x624 (75 Hz) GoldFish timing*/
timingVESA_800x600_56hz = 180, /* 800x600 (56 Hz) SVGA timing*/
timingVESA_800x600_60hz = 182, /* 800x600 (60 Hz) SVGA timing*/
timingVESA_800x600_72hz = 184, /* 800x600 (72 Hz) SVGA timing*/
timingVESA_800x600_75hz = 186, /* 800x600 (75 Hz) SVGA timing*/
timingVESA_1024x768_60hz = 190, /* 1024x768 (60 Hz) VESA 1K-60Hz*/
timingVESA_1024x768_70hz = 200, /* 1024x768 (70 Hz) VESA 1K-70Hz*/
timingApple_1024x768_75hz = 210, /* 1024x768 (75 Hz) Apple 19" RGB*/
timingApple_1152x870_75hz = 220, /* 1152x870 (75 Hz) Apple 21" RGB*/
timingAppleNTSC_ST = 230, /* 512x384 (60 Hz, interlaced,
nonconvolved)*/
timingAppleNTSC_FF = 232, /* 640x480 (60 Hz, interlaced,
nonconvolved)*/
timingAppleNTSC_STconv = 234, /* 512x384 (60 Hz, interlaced,
nonconvolved)*/
timingAppleNTSC_FFconv = 236, /* 640x480 (60 Hz, interlaced,
nonconvolved)*/
timingApplePAL_ST = 238, /* 640x480 (60 Hz, interlaced,
nonconvolved)*/
timingApplePAL_FF = 240, /* 768x576 (60 Hz, interlaced,
nonconvolved)*/
timingApplePAL_STconv = 242, /* 640x480 (60 Hz, interlaced,
nonconvolved)*/
timingApplePAL_FFconv = 244, /* 768x576 (60 Hz, interlaced,
nonconvolved)*/
timingVESA_1280x960_75hz = 250, /* 1280x960 (75 Hz)*/
timingVESA_1280x1024_60hz = 260, /* 1280x1024 (60 Hz)*/
timingVESA_1280x1024_75hz = 262, /* 1280x1024 (75 Hz)*/
timingVESA_1600x1200_60hz = 280, /* 1600x1200 (60 Hz) VESA proposed*/
timingVESA_1600x1200_65hz = 282, /* 1600x1200 (65 Hz) VESA proposed*/
timingVESA_1600x1200_70hz = 284, /* 1600x1200 (70 Hz) VESA proposed*/
timingVESA_1600x1200_75hz = 286, /* 1600x1200 (75 Hz) VESA proposed*/
timingVESA_1600x1200_80hz = 288 /* 1600x1200 (80 Hz) VESA proposed
(pixel clock is 216 Mhz dot clock)*/
/*csConnectFlags values in VDDisplayConnectInfo*/
enum{
kAllModesValid =0,
kAllModesSafe =1,
kReportsTagging =2,
kHasDirectConnection=3,
kIsMonoDev =4,
kUncertainConnection=5,
kTaggingInfoNonStandard=6,
kReportsDDCConnection=7,
kHasDDCConnection=8
};
/*csDisplayType values in VDDisplayConnectInfo*/
enum{
kUnknownConnect =1,
kPanelConnect =2, /*for use with fixed-in-place LCD panels */
kPanelTFTConnect =2, /*alias fork PanelConnect*/
kFixedModeCRTConnect =3, /*for use with fixed-mode
(i.e.verylimitedrange)displays */
kMultiModeCRT1Connect =4, /*320x200maybe,12"maybe, 13"(default),
16" certain,19"maybe,21"maybe*/
kMultiModeCRT2Connect =5, /*320x200maybe,12"maybe,13"certain,
16" (default),19"certain,21"maybe*/
kMultiModeCRT3Connect =6, /*320x200maybe,12"maybe,13"certain,
16" certain,19"default,21"certain*/
kMultiModeCRT4Connect =7, /*expansiontolargemultimode
(notyetused)*/
kModelessConnect =8, /*expansion to modeless model
(notyetused)*/
kFullPageConnect =9, /*640x818(to get 8bpp in 512K case)
and640x870(thesetwoonly)*/
kVGAConnect =10, /*640x480VGA default--
question everything else*/
kNTSCConnect =11, /*NTSCST(default),FF,STconv,FFconv*/
kPALConnect =12, /*PALST(default),FF,STconv,FFconv*/
kHRConnect =13, /*640x400 (to get 8bpp in 256K case)
and640x480(these two only)*/
kPanelFSTNConnect =14 /*for use with fixed-in-place LCDFSTN
(aka"Super twist ")panels*/
};
/*csTimingFlags values in VDTimingInfoRec*/
enum{
kModeValid =0, /*says that this mode should NOT be trimmed*/
kModeSafe =1, /*this mode does not need confirmation*/
kModeDefault =2, /*default mode for this type connection*/
kModeShowNow =3, /*this mode should always be shown(even
though it may require a confirm)*/
kModeNotResize =4, /*shouldnotbeusedtoresizethedisplay,
e.g.mode selects different connector on card*/
kModeRequiresPan =5 /*has more pixels than are actually displayed*/
};
typedef unsigned short DepthMode;
enum{
kDepthMode1=128,
kDepthMode2=129,
kDepthMode3=130,
kDepthMode4=131,
kDepthMode5=132,
kDepthMode6=133
typedef unsigned char RawSenseCode;
enum{
kRSCZero=0,
kRSCOne=1,
kRSCTwo=2,
kRSCThree=3,
kRSCFour=4,
kRSCFive =5,
kRSCSix=6,
kRSCSeven=7
};
typedef unsigned char Extended SenseCode;
enum{
kESCZero21Inch =0x00, /*21"RGB*/
kESCOnePortraitMono =0x14, /*portraitMonochrome*/
kESCTwo12Inch =0x21, /*12"RGB*/
kESCThree21InchRadius =0x31, /*21"RGB(Radius)*/
kESCThree21InchMonoRadius=0x34, /*21"monochrome(Radius)*/
kESCThree21InchMono =0x35, /*21"monochrome*/
kESCFourNTSC =0x0A, /*NTSC*/
kESCFivePortrait =0x1E, /*PortraitRGB*/
kESCSixMSB1 =0x03, /*Multiscanband-1(13"thru16")*/
kESCSixMSB2 =0x0B, /*Multiscanband-2(13"thru19")*/
kESCSixMSB3 =0x23, /*Multiscanband-3(13"thru21")*/
kESCSixStandard =0x2B, /*13"/14"RGBor12"Monochrome*/
kESCSevenPAL =0x00, /*PAL*/
kESCSevenNTSC =0x14, /*NTSC*/
kESCSevenVGA =0x17, /*VGA*/
kESCSeven16Inch =0x2D, /*16"RGB(GoldFish)*/
kESCSevenPALAlternate =0x30, /*PAL(alternate)*/
kESCSeven19Inch =0x3A, /*Third-party19"*/
kESCSevenNoDisplay =0x3F /*Nodisplayconnected*/
};
enum {
kDisplayModeIDCurrent = 0x0, // reference the current DisplayModeID
kDisplayModeIDInvalid = 0xffffffff, // a bogus DisplayModeID in all cases
kDisplayModeIDFindFirstResolution = 0xfffffffe, // used in
// GetNextResolution to
// reset iterator
kDisplayModeIDNoMoreResolutions = 0xfffffffd // used in
// GetNextResolution to
// indicate end of list
}
enum {
kGammaTableIDFindFirst = 0xfffffffe, // get the first gamma table ID
kGammaTableIDNoMoreTables = 0xfffffffd, // used to indicate end of list
kGammaTableIDSpecific = 0x0 // return the info for the given table ID
}