#ifndef VBE_H_
#define VBE_H_
+#include <stdio.h>
#include "inttypes.h"
+#include "util.h"
-#define VBE_ATTR_LFB (1 << 7)
-#define VBE_MODE_LFB (1 << 14)
-
-#pragma pack (push, 0)
+#pragma pack (push, 1)
struct vbe_info {
- uint8_t sig[4];
- uint16_t version;
- uint32_t oem_str_ptr;
- uint8_t caps[4]; /* capabilities */
- uint32_t vid_mode_ptr; /* vbefarptr to video mode list */
- uint16_t total_mem; /* num of 64k mem blocks */
- uint16_t oem_sw_rev; /* VBE implementation software revision */
- uint32_t oem_vendor_name_ptr;
- uint32_t oem_product_name_ptr;
- uint32_t oem_product_rev_ptr;
- uint8_t reserved[222];
- uint8_t oem_data[256];
-};
+ char sig[4];
+ uint16_t ver;
+ char *oem_name;
+ uint32_t caps;
+ uint16_t *modes;
+ uint16_t vmem_blk; /* video memory size in 64k blocks */
+ uint16_t oem_ver;
+ char *vendor;
+ char *product;
+ char *revstr;
+ uint16_t accel_ver;
+ uint16_t *accel_modes;
+ char reserved[216];
+ char oem_data[256];
+} PACKED;
struct vbe_mode_info {
- uint16_t mode_attr;
+ uint16_t attr;
uint8_t wina_attr, winb_attr;
uint16_t win_gran, win_size;
uint16_t wina_seg, winb_seg;
uint8_t reserved1;
/* direct color fields */
- uint8_t rmask_size, rpos;
- uint8_t gmask_size, gpos;
- uint8_t bmask_size, bpos;
- uint8_t xmask_size, xpos;
+ uint8_t rsize, rpos;
+ uint8_t gsize, gpos;
+ uint8_t bsize, bpos;
+ uint8_t xsize, xpos;
uint8_t cmode_info; /* direct color mode attributes */
/* VBE 2.0 and above */
uint32_t fb_addr; /* physical address of the linear framebuffer */
- uint32_t reserved2;
- uint16_t reserved3;
+ uint32_t os_addr; /* phys. address of off-screen memory */
+ uint16_t os_size; /* size in KB of off-screen memory */
- uint8_t reserved4[206];
-};
+ /* VBE 3.0 and above */
+ uint16_t lfb_scanline_bytes;
+ uint8_t banked_num_img_pages;
+ uint8_t lfb_num_img_pages;
+ uint8_t lfb_rsize, lfb_rpos;
+ uint8_t lfb_gsize, lfb_gpos;
+ uint8_t lfb_bsize, lfb_bpos;
+ uint8_t lfb_xsize, lfb_xpos;
+ uint32_t max_pixel_clock;
+
+ char reserved2[190];
+} PACKED;
+
+struct vbe_crtc_info {
+ uint16_t htotal, hsync_start, hsync_end;
+ uint16_t vtotal, vsync_start, vsync_end;
+ uint8_t flags;
+ uint32_t pixel_clock;
+ uint16_t rate_centihz; /* refresh rate in 1/100 hz (pck / (htotal * vtotal)) */
+ char reserved[40];
+} PACKED;
#pragma pack (pop)
-struct vbe_info *vbe_get_info(void);
-struct vbe_mode_info *vbe_get_mode_info(int mode);
+/* returned by vbe_scanline_info() */
+struct vbe_scanline_info {
+ int size;
+ int num_pixels;
+ int max_scanlines;
+};
+
+enum {
+ VBE_8BIT_DAC = 0x01,
+ VBE_NON_VGA = 0x02,
+ VBE_DAC_BLANK = 0x04,
+ VBE_STEREO = 0x08, /* ? */
+ VBE_ACCEL = 0x08,
+ VBE_STEREO_VESA = 0x10, /* ? */
+ VBE_MUSTLOCK = 0x10,
+ VBE_HWCURSOR = 0x20,
+ VBE_HWCLIP = 0x40,
+ VBE_TRANSP_BLT = 0x80
+};
+
+#define VBE_VER_MAJOR(v) (((v) >> 8) & 0xff)
+#define VBE_VER_MINOR(v) ((v) & 0xff)
+
+/* VBE mode attribute flags (vbe_mode_info.attr) */
+enum {
+ VBE_ATTR_AVAIL = 0x0001,
+ VBE_ATTR_OPTINFO = 0x0002,
+ VBE_ATTR_TTY = 0x0004,
+ VBE_ATTR_COLOR = 0x0008,
+ VBE_ATTR_GFX = 0x0010,
+ /* VBE 2.0 */
+ VBE_ATTR_NOTVGA = 0x0020,
+ VBE_ATTR_BANKED = 0x0040,
+ VBE_ATTR_LFB = 0x0080,
+ VBE_ATTR_DBLSCAN = 0x0100,
+ /* VBE 3.0 */
+ VBE_ATTR_ILACE = 0x0200, /* ! */
+ VBE_ATTR_TRIPLEBUF = 0x0400,
+ VBE_ATTR_STEREO = 0x0800,
+ VBE_ATTR_STEREO_2FB = 0x1000,
+ /* VBE/AF */
+ VBE_ATTR_MUSTLOCK = 0x0200, /* ! */
+};
+
+/* VBE memory model type (vbe_mode_info.mem_model) */
+enum {
+ VBE_TYPE_TEXT,
+ VBE_TYPE_CGA,
+ VBE_TYPE_HERCULES,
+ VBE_TYPE_PLANAR,
+ VBE_TYPE_PACKED,
+ VBE_TYPE_UNCHAIN,
+ VBE_TYPE_DIRECT,
+ VBE_TYPE_YUV
+};
+
+/* VBE window attribute (vbe_mode_info.win(a|b)_attr) */
+enum {
+ VBE_WIN_AVAIL = 0x01,
+ VBE_WIN_RD = 0x02,
+ VBE_WIN_WR = 0x04
+};
+
+/* mode number flags */
+enum {
+ VBE_MODE_RATE = 0x0800, /* VBE 3.0+ user-specified refresh rate */
+ VBE_MODE_ACCEL = 0x2000, /* VBE/AF */
+ VBE_MODE_LFB = 0x4000, /* VBE 2.0+ */
+ VBE_MODE_PRESERVE = 0x8000
+};
+
+/* standard mode numbers */
+enum {
+ VBE_640X400_8BPP = 0x100,
+ VBE_640X480_8BPP = 0x101,
+ VBE_800X600_4BPP = 0x102,
+ VBE_800X600_8BPP = 0x103,
+ VBE_1024X768_4BPP = 0x104,
+ VBE_1024X768_8BPP = 0x105,
+ VBE_1280X1024_4BPP = 0x106,
+ VBE_1280X1024_8BPP = 0x107,
+ VBE_80X60_TEXT = 0x108,
+ VBE_132X25_TEXT = 0x109,
+ VBE_132X43_TEXT = 0x10a,
+ VBE_132X50_TEXT = 0x10b,
+ VBE_132X60_TEXT = 0x10c,
+ /* VBE 1.2 */
+ VBE_320X200_15BPP = 0x10d,
+ VBE_320X200_16BPP = 0x10e,
+ VBE_320X200_24BPP = 0x10f,
+ VBE_640X480_15BPP = 0x110,
+ VBE_640X480_16BPP = 0x111,
+ VBE_640X480_24BPP = 0x112,
+ VBE_800X600_15BPP = 0x113,
+ VBE_800X600_16BPP = 0x114,
+ VBE_800X600_24BPP = 0x115,
+ VBE_1024X768_15BPP = 0x116,
+ VBE_1024X768_16BPP = 0x117,
+ VBE_1024X768_24BPP = 0x118,
+ VBE_1280X1024_15BPP = 0x119,
+ VBE_1280X1024_16BPP = 0x11a,
+ VBE_1280X1024_24BPP = 0x11b,
+ /* VBE 2.0 */
+ VBE_1600X1200_8BPP = 0x120,
+ VBE_1600X1200_15BPP = 0x121,
+ VBE_1600X1200_16BPP = 0x122,
+
+ VBE_VMEM_MODE = 0x81ff
+};
+
+/* VBE CRTC flags (vbe_crtc_info.flags) */
+enum {
+ VBE_CRTC_DBLSCAN = 0x01,
+ VBE_CRTC_ILACE = 0x02,
+ VBE_CRTC_HSYNC_NEG = 0x04,
+ VBE_CRTC_VSYNC_NEG = 0x08
+};
+
+enum {
+ VBE_STATE_CTRLHW = 0x01,
+ VBE_STATE_BIOS = 0x02,
+ VBE_STATE_DAC = 0x04,
+ VBE_STATE_REGS = 0x08,
+
+ VBE_STATE_ALL = 0xffff
+};
+
+enum {
+ VBE_SWAP_NOW,
+ VBE_SWAP_VBLANK,
+ VBE_SWAP_ASYNC /* schedule swap and return (triple-buffering) */
+};
+
+int vbe_info(struct vbe_info *info);
+int vbe_num_modes(struct vbe_info *info);
+int vbe_mode_info(int mode, struct vbe_mode_info *minf);
+
+void vbe_print_info(FILE *fp, struct vbe_info *info);
+void vbe_print_mode_info(FILE *fp, struct vbe_mode_info *minf);
+
+int vbe_setmode(uint16_t mode);
+int vbe_setmode_crtc(uint16_t mode, struct vbe_crtc_info *crtc);
+int vbe_getmode(void);
+
+int vbe_state_size(unsigned int flags);
+int vbe_save(void *stbuf, int sz, unsigned int flags);
+int vbe_restore(void *stbuf, int sz, unsigned int flags);
-int vbe_set_mode(int mode);
+int vbe_setwin(int wid, int pos);
+int vbe_getwin(int wid);
-int vbe_set_palette_bits(int bits);
-void vbe_set_palette(int idx, int *col, int count, int bits);
+/* returns the actual length in pixels, which might not be what was requested */
+int vbe_setscanlen(int len_pix);
+int vbe_getscanlen(void);
+int vbe_getpitch(void);
+int vbe_scanline_info(struct vbe_scanline_info *sinf);
-void print_mode_info(FILE *fp, struct vbe_mode_info *modei);
+int vbe_setdisp(int x, int y, int when);
+int vbe_swap(uint32_t voffs, int when);
+int vbe_swap_pending(void); /* 0: not pending (done) or error, 1: pending swap */
+/* TODO add stereo swap */
#endif /* VBE_H_ */
projects / dosdemo / blobdiff