mirror of https://github.com/mpv-player/mpv
228 lines
9.3 KiB
C
228 lines
9.3 KiB
C
/*
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VESA VBE 2.0 compatible structures and definitions.
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You can redistribute this file under terms and conditions
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of GNU General Public licence v2.
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Written by Nick Kurshev <nickols_k@mail.ru>
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*/
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#ifndef __VESA_VBELIB_INCLUDED__
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#define __VESA_VBELIB_INCLUDED__ 1
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/* Note: every pointer within structures is 32-bit protected mode pointer.
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So you don't need to convert it from real mode. */
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typedef struct tagFarPtr
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{
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unsigned short off;
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unsigned short seg;
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}FarPtr;
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#define VBE_DAC_8BIT (1 << 0)
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#define VBE_NONVGA_CRTC (1 << 1)
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#define VBE_SNOWED_RAMDAC (1 << 2)
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#define VBE_STEREOSCOPIC (1 << 3)
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#define VBE_STEREO_EVC (1 << 4)
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struct VbeInfoBlock {
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char VESASignature[4]; /* 'VESA' 4 byte signature */
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short VESAVersion; /* VBE version number */
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char * OemStringPtr; /* Pointer to OEM string */
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long Capabilities; /* Capabilities of video card */
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unsigned short* VideoModePtr; /* Pointer to supported modes */
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short TotalMemory; /* Number of 64kb memory blocks */
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/* VBE 2.0 and above */
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short OemSoftwareRev;
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char * OemVendorNamePtr;
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char * OemProductNamePtr;
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char * OemProductRevPtr;
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char reserved[222];
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char OemData[256]; /* Pad to 512 byte block size */
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}__attribute__ ((packed));
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static inline FarPtr VirtToPhys(void *ptr)
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{
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FarPtr retval;
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retval.seg = ((unsigned long)ptr) >> 4;
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retval.off = ((unsigned long)ptr) & 0x0f;
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return retval;
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}
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static inline unsigned short VirtToPhysSeg(void *ptr)
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{
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return ((unsigned long)ptr) >> 4;
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}
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static inline unsigned short VirtToPhysOff(void *ptr)
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{
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return ((unsigned long)ptr) & 0x0f;
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}
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static inline void * PhysToVirt(FarPtr ptr)
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{
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return (void *)((ptr.seg << 4) | ptr.off);
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}
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static inline void * PhysToVirtSO(unsigned short seg,unsigned short off)
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{
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return (void *)((seg << 4) | off);
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}
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#define MODE_ATTR_MODE_SUPPORTED (1 << 0)
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#define MODE_ATTR_TTY (1 << 2)
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#define MODE_ATTR_COLOR (1 << 3)
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#define MODE_ATTR_GRAPHICS (1 << 4)
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#define MODE_ATTR_NOT_VGA (1 << 5)
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#define MODE_ATTR_NOT_WINDOWED (1 << 6)
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#define MODE_ATTR_LINEAR (1 << 7)
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#define MODE_ATTR_DOUBLESCAN (1 << 8)
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#define MODE_ATTR_INTERLACE (1 << 9)
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#define MODE_ATTR_TRIPLEBUFFER (1 << 10)
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#define MODE_ATTR_STEREOSCOPIC (1 << 11)
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#define MODE_ATTR_DUALDISPLAY (1 << 12)
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#define MODE_WIN_RELOCATABLE (1 << 0)
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#define MODE_WIN_READABLE (1 << 1)
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#define MODE_WIN_WRITEABLE (1 << 2)
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/* SuperVGA mode information block */
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struct VesaModeInfoBlock {
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unsigned short ModeAttributes; /* 00: Mode attributes */
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unsigned char WinAAttributes; /* 02: Window A attributes */
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unsigned char WinBAttributes; /* 03: Window B attributes */
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unsigned short WinGranularity; /* 04: Window granularity in k */
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unsigned short WinSize; /* 06: Window size in k */
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unsigned short WinASegment; /* 08: Window A segment */
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unsigned short WinBSegment; /* 0A: Window B segment */
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FarPtr WinFuncPtr; /* 0C: 16-bit far pointer to window function */
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unsigned short BytesPerScanLine; /* 10: Bytes per scanline */
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/* VBE 1.2 and above */
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unsigned short XResolution; /* 12: Horizontal resolution */
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unsigned short YResolution; /* 14: Vertical resolution */
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unsigned char XCharSize; /* 16: Character cell width */
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unsigned char YCharSize; /* 17: Character cell height */
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unsigned char NumberOfPlanes; /* 18: Number of memory planes */
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unsigned char BitsPerPixel; /* 19: Bits per pixel */
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unsigned char NumberOfBanks; /* 1A: Number of CGA style banks */
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unsigned char MemoryModel; /* 1B: Memory model type */
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unsigned char BankSize; /* 1C: Size of CGA style banks */
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unsigned char NumberOfImagePages; /* 1D: Number of images pages */
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unsigned char res1; /* 1E: Reserved */
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/* Direct Color fields (required for direct/6 and YUV/7 memory models) */
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unsigned char RedMaskSize; /* 1F: Size of direct color red mask */
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unsigned char RedFieldPosition; /* 20: Bit posn of lsb of red mask */
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unsigned char GreenMaskSize; /* 21: Size of direct color green mask */
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unsigned char GreenFieldPosition; /* 22: Bit posn of lsb of green mask */
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unsigned char BlueMaskSize; /* 23: Size of direct color blue mask */
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unsigned char BlueFieldPosition; /* 24: Bit posn of lsb of blue mask */
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unsigned char RsvdMaskSize; /* 25: Size of direct color res mask */
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unsigned char RsvdFieldPosition; /* 26: Bit posn of lsb of res mask */
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unsigned char DirectColorModeInfo; /* 27: Direct color mode attributes */
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/* VBE 2.0 and above */
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unsigned long PhysBasePtr; /* 28: physical address for flat memory frame buffer. (Should be converted to linear before using) */
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unsigned short res3[3]; /* 2C: Reserved - always set to 0 */
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/* VBE 3.0 and above */
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unsigned short LinBytesPerScanLine; /* 32: bytes per scan line for linear modes */
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unsigned char BnkNumberOfImagePages;/* 34: number of images for banked modes */
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unsigned char LinNumberOfImagePages;/* 35: number of images for linear modes */
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unsigned char LinRedMaskSize; /* 36: size of direct color red mask (linear modes) */
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unsigned char LinRedFieldPosition; /* 37: bit position of lsb of red mask (linear modes) */
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unsigned char LinGreenMaskSize; /* 38: size of direct color green mask (linear modes) */
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unsigned char LinGreenFieldPosition;/* 39: bit position of lsb of green mask (linear modes) */
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unsigned char LinBlueMaskSize; /* 40: size of direct color blue mask (linear modes) */
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unsigned char LinBlueFieldPosition; /* 41: bit position of lsb of blue mask (linear modes) */
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unsigned char LinRsvdMaskSize; /* 42: size of direct color reserved mask (linear modes) */
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unsigned char LinRsvdFieldPosition; /* 43: bit position of lsb of reserved mask (linear modes) */
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unsigned long MaxPixelClock; /* 44: maximum pixel clock (in Hz) for graphics mode */
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char res4[189]; /* 48: remainder of ModeInfoBlock */
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}__attribute__ ((packed));
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typedef enum {
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memText= 0,
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memCGA = 1,
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memHercules = 2,
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memPL = 3, /* Planar memory model */
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memPK = 4, /* Packed pixel memory model */
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mem256 = 5,
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memRGB = 6, /* Direct color RGB memory model */
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memYUV = 7, /* Direct color YUV memory model */
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} memModels;
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struct VesaCRTCInfoBlock {
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unsigned short hTotal; /* Horizontal total in pixels */
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unsigned short hSyncStart; /* Horizontal sync start in pixels */
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unsigned short hSyncEnd; /* Horizontal sync end in pixels */
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unsigned short vTotal; /* Vertical total in lines */
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unsigned short vSyncStart; /* Vertical sync start in lines */
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unsigned short vSyncEnd; /* Vertical sync end in lines */
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unsigned char Flags; /* Flags (Interlaced, Double Scan etc) */
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unsigned long PixelClock; /* Pixel clock in units of Hz */
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unsigned short RefreshRate;/* Refresh rate in units of 0.01 Hz*/
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unsigned char Reserved[40];/* remainder of CRTCInfoBlock*/
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}__attribute__ ((packed));
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#define VESA_CRTC_DOUBLESCAN 0x01
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#define VESA_CRTC_INTERLACED 0x02
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#define VESA_CRTC_HSYNC_NEG 0x04
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#define VESA_CRTC_VSYNC_NEG 0x08
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#define VESA_MODE_CRTC_REFRESH (1 << 11)
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#define VESA_MODE_USE_LINEAR (1 << 14)
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#define VESA_MODE_NOT_CLEAR (1 << 15)
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/* This will contain accesible 32-bit protmode pointers */
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struct VesaProtModeInterface
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{
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void (*SetWindowCall)(void);
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void (*SetDisplayStart)(void);
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void (*SetPaletteData)(void);
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unsigned short * iopl_ports;
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};
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/*
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All functions below return:
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0 if succesful
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0xffff if vm86 syscall error occurs
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0x4fxx if VESA error occurs
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*/
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#define VBE_OK 0
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#define VBE_VM86_FAIL -1
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#define VBE_OUT_OF_DOS_MEM -2
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#define VBE_OUT_OF_MEM -3
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#define VBE_BROKEN_BIOS -4
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#define VBE_VESA_ERROR_MASK 0x004f
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#define VBE_VESA_ERRCODE_MASK 0xff00
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extern int vbeInit( void );
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extern int vbeDestroy( void );
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extern int vbeGetControllerInfo(struct VbeInfoBlock *);
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extern int vbeGetModeInfo(unsigned mode,struct VesaModeInfoBlock *);
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extern int vbeSetMode(unsigned mode,struct VesaCRTCInfoBlock *);
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extern int vbeGetMode(unsigned *mode);
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extern int vbeGetPixelClock(unsigned *mode,unsigned *pixel_clock);
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extern int vbeSaveState(void **data); /* note never copy this data */
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extern int vbeRestoreState(void *data);
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extern int vbeGetWindow(unsigned *win_num); /* win_A=0 or win_B=1 */
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extern int vbeSetWindow(unsigned win_num,unsigned win_gran);
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extern int vbeGetScanLineLength(unsigned *num_pixels,unsigned *num_bytes);
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extern int vbeGetMaxScanLines(unsigned *num_pixels,unsigned *num_bytes, unsigned *num_lines);
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extern int vbeSetScanLineLength(unsigned num_pixels);
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extern int vbeSetScanLineLengthB(unsigned num_bytes);
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extern int vbeGetDisplayStart(unsigned *pixel_num,unsigned *scan_line);
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extern int vbeSetDisplayStart(unsigned long offset, int vsync);
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extern int vbeSetScheduledDisplayStart(unsigned long offset, int vsync);
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/*
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Func 0x08-0x09:
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Support of palette currently is not implemented.
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*/
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extern int vbeGetProtModeInfo(struct VesaProtModeInterface *);
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/* Standard VGA stuff */
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int vbeWriteString(int x, int y, int attr, char *str);
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/* Misc stuff (For portability only) */
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void * vbeMapVideoBuffer(unsigned long phys_addr,unsigned long size);
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void vbeUnmapVideoBuffer(unsigned long linear_addr,unsigned long size);
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#endif
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