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authornick <nick@b3059339-0415-0410-9bf9-f77b7e298cf2>2001-10-17 18:20:43 +0000
committernick <nick@b3059339-0415-0410-9bf9-f77b7e298cf2>2001-10-17 18:20:43 +0000
commit6225db192c7f5963062c19dd7ebe79591035f9f7 (patch)
tree0154a68783170faef827c748c6eff2ea1bc72e90
parente7e64459a2cfb922f00a2a0c8eb374e8eefe832d (diff)
downloadmpv-6225db192c7f5963062c19dd7ebe79591035f9f7.tar.bz2
mpv-6225db192c7f5963062c19dd7ebe79591035f9f7.tar.xz
vbelib import
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2244 b3059339-0415-0410-9bf9-f77b7e298cf2
-rw-r--r--linux/vbelib.c265
-rw-r--r--linux/vbelib.h216
2 files changed, 481 insertions, 0 deletions
diff --git a/linux/vbelib.c b/linux/vbelib.c
new file mode 100644
index 0000000000..1eca190ad5
--- /dev/null
+++ b/linux/vbelib.c
@@ -0,0 +1,265 @@
+/*
+ This file contains implementation of VESA library which is based on
+ LRMI (Linux real-mode interface).
+ So it's not an emulator - it calls real int 10h handler under Linux.
+ Note: VESA is available only on x86 systems.
+ You can redistribute this file under terms and conditions
+ GNU General Public licence v2.
+ Written by Nick Kurshev <nickols_k@mail.ru>
+*/
+#include "vbelib.h"
+#include "lrmi.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/io.h>
+
+static struct VesaProtModeInterface vbe_pm_info;
+
+int vbeInit( void )
+{
+ if(!LRMI_init()) return VBE_VM86_FAIL;
+ /*
+ Allow read/write to ALL io ports
+ */
+ ioperm(0, 1024, 1);
+ iopl(3);
+ memset(&vbe_pm_info,0,sizeof(struct VesaProtModeInterface));
+ vbeGetProtModeInfo(&vbe_pm_info);
+ return VBE_OK;
+}
+
+int vbeDestroy( void ) { return VBE_OK; }
+
+int vbeGetControllerInfo(struct VbeInfoBlock *data)
+{
+ struct LRMI_regs r;
+ void *rm_space;
+ int retval;
+ if(!(rm_space = LRMI_alloc_real(sizeof(struct VbeInfoBlock)))) return VBE_OUT_OF_DOS_MEM;
+ memcpy(rm_space,data,sizeof(struct VbeInfoBlock));
+ memset(&r,0,sizeof(struct LRMI_regs));
+ r.eax = 0x4f00;
+ r.es = VirtToPhysSeg(rm_space);
+ r.edi = VirtToPhysOff(rm_space);
+ if(!LRMI_int(0x10,&r))
+ {
+ LRMI_free_real(rm_space);
+ return VBE_VM86_FAIL;
+ }
+ retval = r.eax & 0xffff;
+ if(retval == 0x4f)
+ {
+ FarPtr fpdata;
+ retval = VBE_OK;
+ memcpy(data,rm_space,sizeof(struct VbeInfoBlock));
+ fpdata.seg = (unsigned long)(data->OemStringPtr) >> 16;
+ fpdata.off = (unsigned long)(data->OemStringPtr) & 0xffff;
+ data->OemStringPtr = PhysToVirt(fpdata);
+ fpdata.seg = (unsigned long)(data->VideoModePtr) >> 16;
+ fpdata.off = (unsigned long)(data->VideoModePtr) & 0xffff;
+ data->VideoModePtr = PhysToVirt(fpdata);
+ fpdata.seg = (unsigned long)(data->OemVendorNamePtr) >> 16;
+ fpdata.off = (unsigned long)(data->OemVendorNamePtr) & 0xffff;
+ data->OemVendorNamePtr = PhysToVirt(fpdata);
+ fpdata.seg = (unsigned long)(data->OemProductNamePtr) >> 16;
+ fpdata.off = (unsigned long)(data->OemProductNamePtr) & 0xffff;
+ data->OemProductNamePtr = PhysToVirt(fpdata);
+ fpdata.seg = (unsigned long)(data->OemProductRevPtr) >> 16;
+ fpdata.off = (unsigned long)(data->OemProductRevPtr) & 0xffff;
+ data->OemProductRevPtr = PhysToVirt(fpdata);
+ }
+ return retval;
+}
+
+int vbeGetModeInfo(unsigned mode,struct VesaModeInfoBlock *data)
+{
+ struct LRMI_regs r;
+ void *rm_space;
+ int retval;
+ if(!(rm_space = LRMI_alloc_real(sizeof(struct VesaModeInfoBlock)))) return VBE_OUT_OF_DOS_MEM;
+ memset(&r,0,sizeof(struct LRMI_regs));
+ r.eax = 0x4f01;
+ r.ecx = mode;
+ r.es = VirtToPhysSeg(rm_space);
+ r.edi = VirtToPhysOff(rm_space);
+ if(!LRMI_int(0x10,&r))
+ {
+ LRMI_free_real(rm_space);
+ return VBE_VM86_FAIL;
+ }
+ retval = r.eax & 0xffff;
+ if(retval == 0x4f)
+ {
+ retval = VBE_OK;
+ memcpy(data,rm_space,sizeof(struct VesaModeInfoBlock));
+ }
+ return retval;
+}
+
+int vbeSetMode(unsigned mode,struct VesaCRTCInfoBlock *data)
+{
+ struct LRMI_regs r;
+ void *rm_space = NULL;
+ int retval;
+ memset(&r,0,sizeof(struct LRMI_regs));
+ if(data)
+ {
+ if(!(rm_space = LRMI_alloc_real(sizeof(struct VesaCRTCInfoBlock)))) return VBE_OUT_OF_DOS_MEM;
+ r.es = VirtToPhysSeg(rm_space);
+ r.edi = VirtToPhysOff(rm_space);
+ memcpy(rm_space,data,sizeof(struct VesaCRTCInfoBlock));
+ }
+ r.eax = 0x4f02;
+ r.ebx = mode;
+ retval = LRMI_int(0x10,&r);
+ if(rm_space) LRMI_free_real(rm_space);
+ if(!retval) return VBE_VM86_FAIL;
+ retval = r.eax & 0xffff;
+ if(retval == 0x4f) retval = VBE_OK;
+ return retval;
+}
+
+int vbeGetMode(unsigned *mode)
+{
+ struct LRMI_regs r;
+ int retval;
+ memset(&r,0,sizeof(struct LRMI_regs));
+ r.eax = 0x4f03;
+ if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
+ retval = r.eax & 0xffff;
+ if(retval == 0x4f)
+ {
+ *mode = r.ebx;
+ retval = VBE_OK;
+ }
+ return retval;
+}
+
+int vbeSaveState(void **data)
+{
+ struct LRMI_regs r;
+ int retval;
+ void *rm_space;
+ memset(&r,0,sizeof(struct LRMI_regs));
+ r.eax = 0x4f04;
+ r.edx = 0x00;
+ r.ecx = 0x0f;
+ if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
+ retval = r.eax & 0xffff;
+ if(retval != 0x4f) return retval;
+ if(!(rm_space = LRMI_alloc_real((r.ebx & 0xffff)*64))) return VBE_OUT_OF_DOS_MEM;
+ r.eax = 0x4f04;
+ r.edx = 0x01;
+ r.ecx = 0x0f;
+ r.es = VirtToPhysSeg(rm_space);
+ r.edi = VirtToPhysOff(rm_space);
+ if(!LRMI_int(0x10,&r))
+ {
+ LRMI_free_real(rm_space);
+ return VBE_VM86_FAIL;
+ }
+ retval = r.eax & 0xffff;
+ if(retval != 0x4f)
+ {
+ LRMI_free_real(rm_space);
+ return retval;
+ }
+ *data = rm_space;
+ return VBE_OK;
+}
+
+int vbeRestoreState(void *data)
+{
+ struct LRMI_regs r;
+ int retval;
+ void *rm_space;
+ memset(&r,0,sizeof(struct LRMI_regs));
+ r.eax = 0x4f04;
+ r.edx = 0x02;
+ r.ecx = 0x0f;
+ r.es = VirtToPhysSeg(data);
+ r.edi = VirtToPhysOff(data);
+ retval = LRMI_int(0x10,&r);
+ LRMI_free_real(data);
+ if(!retval) return VBE_VM86_FAIL;
+ retval = r.eax & 0xffff;
+ if(retval == 0x4f) retval = VBE_OK;
+ return retval;
+}
+
+int vbeGetWindow(unsigned *win_num)
+{
+ struct LRMI_regs r;
+ int retval;
+ memset(&r,0,sizeof(struct LRMI_regs));
+ r.eax = 0x4f05;
+ r.ebx = (*win_num & 0x0f) | 0x0100;
+ if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
+ retval = r.eax & 0xffff;
+ if(retval == 0x4f)
+ {
+ *win_num = r.edx & 0xffff;
+ retval = VBE_OK;
+ }
+ return retval;
+}
+
+int vbeSetWindow(unsigned win_num,unsigned win_gran)
+{
+ int retval;
+#if 0
+ if(vbe_pm_info.SetWindowCall)
+ {
+ /* 32-bit function call is much better of int 10h */
+ __asm __volatile(
+ "pushl %%ebx\n"
+ "movl %1, %%ebx\n"
+ ::"a"(0x4f05),"S"(win_num & 0x0f),"d"(win_gran):"memory");
+ (*vbe_pm_info.SetWindowCall)();
+ __asm __volatile("popl %%ebx":"=a"(retval)::"memory");
+ }
+ else
+#endif
+ {
+ struct LRMI_regs r;
+ memset(&r,0,sizeof(struct LRMI_regs));
+ r.eax = 0x4f05;
+ r.ebx = win_num & 0x0f;
+ r.edx = win_gran;
+ if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
+ retval = r.eax & 0xffff;
+ }
+ if(retval == 0x4f) retval = VBE_OK;
+ return retval;
+}
+
+struct realVesaProtModeInterface
+{
+ unsigned short SetWindowCall;
+ unsigned short SetDisplayStart;
+ unsigned short SetPaletteData;
+ unsigned short iopl_ports;
+}__attribute__((packed));
+
+int vbeGetProtModeInfo(struct VesaProtModeInterface *pm_info)
+{
+ struct LRMI_regs r;
+ int retval;
+ struct realVesaProtModeInterface *rm_info;
+ memset(&r,0,sizeof(struct LRMI_regs));
+ r.eax = 0x4f0a;
+ r.ebx = 0;
+ if(!LRMI_int(0x10,&r)) return VBE_VM86_FAIL;
+ retval = r.eax & 0xffff;
+ if(retval == 0x4f)
+ {
+ rm_info = PhysToVirtSO(r.es,r.edi&0xffff);
+ pm_info->SetWindowCall = PhysToVirtSO(r.es,rm_info->SetWindowCall);
+ pm_info->SetDisplayStart = PhysToVirtSO(r.es,rm_info->SetDisplayStart);
+ pm_info->SetPaletteData = PhysToVirtSO(r.es,rm_info->SetPaletteData);
+ pm_info->iopl_ports = PhysToVirtSO(r.es,rm_info->iopl_ports);
+ retval = VBE_OK;
+ }
+ return retval;
+}
diff --git a/linux/vbelib.h b/linux/vbelib.h
new file mode 100644
index 0000000000..ba65c1e470
--- /dev/null
+++ b/linux/vbelib.h
@@ -0,0 +1,216 @@
+/*
+ VESA VBE 2.0 compatible structures and definitions.
+ You can redistribute this file under terms and conditions
+ GNU General Public licence v2.
+ Written by Nick Kurshev <nickols_k@mail.ru>
+*/
+#ifndef __VESA_VBELIB_INCLUDED__
+#define __VESA_VBELIB_INCLUDED__ 1
+
+/* Note: every pointer within structures is 32-bit protected mode pointer.
+ So you don't need to convert it from real mode. */
+
+typedef struct tagFarPtr
+{
+ unsigned short off;
+ unsigned short seg;
+}FarPtr;
+
+struct VbeInfoBlock {
+ char VESASignature[4]; /* 'VESA' 4 byte signature */
+ short VESAVersion; /* VBE version number */
+ char * OemStringPtr; /* Pointer to OEM string */
+ long Capabilities; /* Capabilities of video card */
+ unsigned short* VideoModePtr; /* Pointer to supported modes */
+ short TotalMemory; /* Number of 64kb memory blocks */
+ /* VBE 3.0 and above */
+ short OemSoftwareRev;
+ char * OemVendorNamePtr;
+ char * OemProductNamePtr;
+ char * OemProductRevPtr;
+ char reserved[222];
+ char OemData[256]; /* Pad to 512 byte block size */
+}__attribute__ ((packed));
+
+static inline FarPtr VirtToPhys(void *ptr)
+{
+ FarPtr retval;
+ retval.seg = ((unsigned long)ptr) >> 4;
+ retval.off = ((unsigned long)ptr) & 0x0f;
+ return retval;
+}
+
+static inline unsigned short VirtToPhysSeg(void *ptr)
+{
+ return ((unsigned long)ptr) >> 4;
+}
+
+static inline unsigned short VirtToPhysOff(void *ptr)
+{
+ return ((unsigned long)ptr) & 0x0f;
+}
+
+static inline void * PhysToVirt(FarPtr ptr)
+{
+ return (void *)((ptr.seg << 4) | ptr.off);
+}
+
+static inline void * PhysToVirtSO(unsigned short seg,unsigned short off)
+{
+ return (void *)((seg << 4) | off);
+}
+
+#define MODE_ATTR_MODE_SUPPORTED (1 << 0)
+#define MODE_ATTR_TTY (1 << 2)
+#define MODE_ATTR_COLOR (1 << 3)
+#define MODE_ATTR_GRAPHICS (1 << 4)
+#define MODE_ATTR_NOT_VGA (1 << 5)
+#define MODE_ATTR_NOT_WINDOWED (1 << 6)
+#define MODE_ATTR_LINEAR (1 << 7)
+#define MODE_ATTR_DOUBLESCAN (1 << 8)
+#define MODE_ATTR_INTERLACE (1 << 9)
+#define MODE_ATTR_TRIPLEBUFFER (1 << 10)
+#define MODE_ATTR_STEREOSCOPIC (1 << 11)
+#define MODE_ATTR_DUALDISPLAY (1 << 12)
+
+#define MODE_WIN_RELOCATABLE (1 << 0)
+#define MODE_WIN_READABLE (1 << 1)
+#define MODE_WIN_WRITEABLE (1 << 2)
+
+/* SuperVGA mode information block */
+struct VesaModeInfoBlock {
+ unsigned short ModeAttributes; /* Mode attributes */
+ unsigned char WinAAttributes; /* Window A attributes */
+ unsigned char WinBAttributes; /* Window B attributes */
+ unsigned short WinGranularity; /* Window granularity in k */
+ unsigned short WinSize; /* Window size in k */
+ unsigned short WinASegment; /* Window A segment */
+ unsigned short WinBSegment; /* Window B segment */
+ FarPtr WinFuncPtr; /* 16-bit far pointer to window function */
+ unsigned short BytesPerScanLine; /* Bytes per scanline */
+ /* VBE 1.2 and above */
+ unsigned short XResolution; /* Horizontal resolution */
+ unsigned short YResolution; /* Vertical resolution */
+ unsigned char XCharSize; /* Character cell width */
+ unsigned char YCharSize; /* Character cell height */
+ unsigned char NumberOfPlanes; /* Number of memory planes */
+ unsigned char BitsPerPixel; /* Bits per pixel */
+ unsigned char NumberOfBanks; /* Number of CGA style banks */
+ unsigned char MemoryModel; /* Memory model type */
+ unsigned char BankSize; /* Size of CGA style banks */
+ unsigned char NumberOfImagePages; /* Number of images pages */
+ unsigned char res1; /* Reserved */
+ /* Direct Color fields (required for direct/6 and YUV/7 memory models) */
+ unsigned char RedMaskSize; /* Size of direct color red mask */
+ unsigned char RedFieldPosition; /* Bit posn of lsb of red mask */
+ unsigned char GreenMaskSize; /* Size of direct color green mask */
+ unsigned char GreenFieldPosition; /* Bit posn of lsb of green mask */
+ unsigned char BlueMaskSize; /* Size of direct color blue mask */
+ unsigned char BlueFieldPosition; /* Bit posn of lsb of blue mask */
+ unsigned char RsvdMaskSize; /* Size of direct color res mask */
+ unsigned char RsvdFieldPosition; /* Bit posn of lsb of res mask */
+ unsigned char DirectColorModeInfo; /* Direct color mode attributes */
+ unsigned char res2[216]; /* Pad to 256 byte block size */
+ /* VBE 2.0 and above */
+ unsigned long PhysBasePtr; /* physical address for flat memory frame buffer. (Should be converted to linear before using) */
+ unsigned short res3[3]; /* Reserved - always set to 0 */
+ /* VBE 3.0 and above */
+ unsigned short LinBytesPerScanLine; /* bytes per scan line for linear modes */
+ unsigned char BnkNumberOfImagePages;/* number of images for banked modes */
+ unsigned char LinNumberOfImagePages;/* number of images for linear modes */
+ unsigned char LinRedMaskSize; /* size of direct color red mask (linear modes) */
+ unsigned char LinRedFieldPosition; /* bit position of lsb of red mask (linear modes) */
+ unsigned char LinGreenMaskSize; /* size of direct color green mask (linear modes) */
+ unsigned char LinGreenFieldPosition;/* bit position of lsb of green mask (linear modes) */
+ unsigned char LinBlueMaskSize; /* size of direct color blue mask (linear modes) */
+ unsigned char LinBlueFieldPosition;/* bit position of lsb of blue mask (linear modes) */
+ unsigned char LinRsvdMaskSize; /* size of direct color reserved mask (linear modes) */
+ unsigned char LinRsvdFieldPosition;/* bit position of lsb of reserved mask (linear modes) */
+ unsigned long MaxPixelClock; /* maximum pixel clock (in Hz) for graphics mode */
+ char res4[189]; /* remainder of ModeInfoBlock */
+}__attribute__ ((packed));
+
+typedef enum {
+ memText= 0,
+ memCGA = 1,
+ memHercules = 2,
+ memPL = 3, /* Planar memory model */
+ memPK = 4, /* Packed pixel memory model */
+ mem256 = 5,
+ memRGB = 6, /* Direct color RGB memory model */
+ memYUV = 7, /* Direct color YUV memory model */
+} memModels;
+
+struct VesaCRTCInfoBlock {
+ unsigned short hTotal; /* Horizontal total in pixels */
+ unsigned short hSyncStart; /* Horizontal sync start in pixels */
+ unsigned short hSyncEnd; /* Horizontal sync end in pixels */
+ unsigned short vTotal; /* Vertical total in lines */
+ unsigned short vSyncStart; /* Vertical sync start in lines */
+ unsigned short vSyncEnd; /* Vertical sync end in lines */
+ unsigned char Flags; /* Flags (Interlaced, Double Scan etc) */
+ unsigned long PixelClock; /* Pixel clock in units of Hz */
+ unsigned short RefreshRate;/* Refresh rate in units of 0.01 Hz*/
+ unsigned char Reserved[40];/* remainder of CRTCInfoBlock*/
+}__attribute__ ((packed));
+
+#define VESA_CRTC_DOUBLESCAN 0x01
+#define VESA_CRTC_INTERLACED 0x02
+#define VESA_CRTC_HSYNC_NEG 0x04
+#define VESA_CRTC_VSYNC_NEG 0x08
+
+#define VESA_MODE_CRTC_REFRESH (1 << 11)
+#define VESA_MODE_USE_LINEAR (1 << 14)
+#define VESA_MODE_NOT_CLEAR (1 << 15)
+
+/* This will contain accesible 32-bit protmode pointers */
+struct VesaProtModeInterface
+{
+ void (*SetWindowCall)(void);
+ void (*SetDisplayStart)(void);
+ void (*SetPaletteData)(void);
+ unsigned short * iopl_ports;
+}__attribute__ ((packed));
+
+/*
+ All functions below return:
+ 0 if succesful
+ 0xffff if vm86 syscall error occurs
+ 0x4fxx if VESA error occurs
+*/
+
+#define VBE_OK 0
+#define VBE_VM86_FAIL -1
+#define VBE_OUT_OF_DOS_MEM -2
+#define VBE_OUT_OF_MEM -3
+#define VBE_VESA_ERROR_MASK 0x4f00
+#define VBE_VESA_ERRCODE_MASK 0xff
+
+extern int vbeInit( void );
+extern int vbeDetroy( void );
+
+extern int vbeGetControllerInfo(struct VbeInfoBlock *);
+extern int vbeGetModeInfo(unsigned mode,struct VesaModeInfoBlock *);
+extern int vbeSetMode(unsigned mode,struct VesaCRTCInfoBlock *);
+extern int vbeGetMode(unsigned *mode);
+extern int vbeSaveState(void **data); /* note never copy this data */
+extern int vbeRestoreState(void *data);
+extern int vbeGetWindow(unsigned *win_num); /* win_A=0 or win_B=1 */
+extern int vbeSetWindow(unsigned win_num,unsigned win_gran);
+/*
+ Func 0x06:
+ Support of logical scan line length is not implemented.
+ We assume that logical scan line length == physical scan line length.
+ (Logical display memory == displayed area).
+*/
+/*
+ Func 0x07:
+ Support of disply start is not implemented.
+ We assume that display start always == 0, 0.
+*/
+/*
+ Func 0x08-0x09:
+ Support of palette currently is not implemented.
+*/
+extern int vbeGetProtModeInfo(struct VesaProtModeInterface *);
+#endif \ No newline at end of file