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framebuf.c
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framebuf.c
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/* framebuf.c
* Linux framebuffer code
* (c) 2002 Petr 'Brain' Kulhavy
* This file is a part of the Links program, released under GPL.
*/
#include "cfg.h"
#ifdef GRDRV_FB
/*#define USE_FB_ACCEL*/
/*#define USE_FB_ACCEL_FILLRECT*/
/* #define FB_DEBUG */
/* #define SC_DEBUG */
/* note: SIGUSR1 is used by libpthread and is disabled even if no thread
functions are called --- do not use */
#define SIG_REL SIGUSR2
#define SIG_ACQ SIGVTALRM
#if defined(FB_DEBUG) || defined(SC_DEBUG)
#define MESSAGE(a) fprintf(stderr,"%s",a);
#endif
#include "links.h"
#include "bits.h"
#include <gpm.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <linux/fb.h>
#include <linux/kd.h>
#include <linux/vt.h>
#include "arrow.inc"
#ifndef MAP_FAILED
#define MAP_FAILED ((void *)-1L)
#endif
#ifdef GPM_HAVE_SMOOTH
#define gpm_smooth GPM_SMOOTH
#else
#define gpm_smooth 0
#endif
#if defined(USE_FB_ACCEL)
#if !defined(FBIO_ACCEL_SUPPORT)
#define FBIO_ACCEL_SUPPORT 0x4630
#define FBIO_ACCEL_SYNC 0x4631
#define FBIO_ACCEL_FILLRECT 0x4632
#define FBIO_ACCEL_FILLRECT_SYNC 0x4633
#define FBIO_ACCEL_COPYAREA 0x4634
#define FBIO_ACCEL_COPYAREA_SYNC 0x4635
#define FB_ACCEL_FILLRECT_SUPPORTED 0x00000001
#define FB_ACCEL_FILLRECT_ACCELERATED 0x00000002
#define FB_ACCEL_COPYAREA_SUPPORTED 0x00000004
#define FB_ACCEL_COPYAREA_ACCELERATED 0x00000008
#define FB_ACCEL_SYNC_NEEDED 0x40000000
/* we don't know if fb_copyarea and fb_fillrect are or aren't defined */
#define fb_copyarea fb_redefined_copyarea
#define fb_fillrect fb_redefined_fillrect
struct fb_copyarea {
__u32 dx;
__u32 dy;
__u32 width;
__u32 height;
__u32 sx;
__u32 sy;
};
struct fb_fillrect {
__u32 dx;
__u32 dy;
__u32 width;
__u32 height;
__u32 color;
__u32 rop;
};
#endif
#ifndef ROP_COPY
#define ROP_COPY 0
#endif
#ifndef ROP_XOR
#define ROP_XOR 1
#endif
#endif
static int TTY = 0;
static int fb_hgpm = -2;
static int fb_hmice = -1;
static unsigned char ps2_mouse_mode;
#define fb_have_mouse (fb_hgpm >= 0 || fb_hmice >= 0)
static int fb_console;
static struct itrm *fb_kbd;
static struct graphics_device *fb_old_vd;
static struct graphics_device *fb_block_dev;
static int fb_handle = -1;
static unsigned char *fb_mem, *fb_vmem;
static unsigned fb_mem_size;
static unsigned fb_mapped_size;
static int fb_linesize, fb_bits_pp, fb_pixelsize;
static int fb_xsize, fb_ysize;
static int border_left, border_right, border_top, border_bottom;
static int fb_colors, fb_palette_colors;
static struct fb_var_screeninfo vi;
static struct fb_fix_screeninfo fi;
static void fb_draw_bitmap(struct graphics_device *dev, struct bitmap *bmp, int x, int y);
static unsigned char *fb_driver_param;
extern struct graphics_driver fb_driver;
static int have_cmap;
static volatile int fb_active;
struct palette {
unsigned short *red;
unsigned short *green;
unsigned short *blue;
};
static struct palette old_palette;
static struct palette global_pal;
static struct vt_mode vt_mode, vt_omode;
/*static struct fb_var_screeninfo oldmode;*/
static volatile int in_gr_operation;
#ifdef USE_FB_ACCEL
static int accel_flags;
static int need_accel_sync;
static inline void accel_sync(void)
{
int rs;
if (need_accel_sync) {
EINTRLOOP(rs, ioctl(fb_handle, FBIO_ACCEL_SYNC));
need_accel_sync = 0;
}
}
#else
#define accel_sync() do { } while (0)
#endif
/* mouse */
static int mouse_x, mouse_y; /* mouse pointer coordinates */
static long mouse_black, mouse_white;
static int background_x, background_y; /* Where was the mouse background taken from */
static unsigned char *mouse_buffer, *background_buffer, *new_background_buffer;
static struct graphics_device *mouse_graphics_device;
static int global_mouse_hidden;
static int last_mouse_buttons;
#define TEST_MOUSE(xl,xh,yl,yh) if (RECTANGLES_INTERSECT(\
(xl),(xh),\
background_x,background_x+arrow_width,\
(yl),(yh),\
background_y,background_y+arrow_height)\
&& !global_mouse_hidden){\
mouse_hidden=1;\
hide_mouse();\
}else mouse_hidden=0;
#define END_MOUSE if (mouse_hidden) show_mouse();
#define END_GR \
memory_barrier(&fb_vmem); \
in_gr_operation--;\
if (!fb_active && !in_gr_operation) {\
accel_sync();\
EINTRLOOP(rs, ioctl(TTY,VT_RELDISP,1));\
}
#define INC_IN_GR \
in_gr_operation++; \
memory_barrier(&fb_vmem);
#define START_GR \
INC_IN_GR \
if (!fb_active) { END_GR return; }
#define START_GR_0 \
INC_IN_GR \
if (!fb_active) { END_GR return 0; }
#define NUMBER_OF_DEVICES 10
#define TEST_INACTIVITY if (!fb_active||dev!=current_virtual_device) return;
#define TEST_INACTIVITY_0 if (!fb_active||dev!=current_virtual_device) return 0;
#define RECTANGLES_INTERSECT(xl0, xh0, xl1, xh1, yl0, yh0, yl1, yh1) (\
(xl0)<(xh1)\
&& (xl1)<(xh0)\
&& (yl0)<(yh1)\
&& (yl1)<(yh0))
/* This assures that x, y, xs, ys, data will be sane according to clipping
* rectangle. If nothing lies within this rectangle, the current function
* returns. The data pointer is automatically advanced by this macro to reflect
* the right position to start with inside the bitmap. */
#define CLIP_PREFACE \
int mouse_hidden;\
int xs, ys;\
unsigned char *data=bmp->data;\
\
if (!data)\
return;\
\
TEST_INACTIVITY\
CLIP_DRAW_BITMAP\
xs = bmp->x;\
ys = bmp->y;\
if (x+xs>dev->clip.x2) xs=dev->clip.x2-x;\
if (y+ys>dev->clip.y2) ys=dev->clip.y2-y;\
if (dev->clip.x1-x>0){\
xs-=(dev->clip.x1-x);\
data+=fb_pixelsize*(dev->clip.x1-x);\
x=dev->clip.x1;\
}\
if (dev->clip.y1-y>0){\
ys-=(dev->clip.y1-y);\
data+=bmp->skip*(dev->clip.y1-y);\
y=dev->clip.y1;\
}\
/* xs, ys: how much pixels to paint\
* data: where to start painting from\
*/\
START_GR\
TEST_MOUSE(x,x+xs,y,y+ys)
/* fill_area: 5,5,10,10 fills in 25 pixels! */
/* This assures that x1, x2, y1, y2 will be sane according to the
* clipping rectangle set up by set_clip_area. If empty region
* results, return from current function occurs. */
#define FILL_CLIP_PREFACE \
int mouse_hidden;\
TEST_INACTIVITY\
CLIP_FILL_AREA\
START_GR\
TEST_MOUSE(x1,x2,y1,y2)
#define HLINE_CLIP_PREFACE \
int mouse_hidden;\
TEST_INACTIVITY\
CLIP_DRAW_HLINE\
START_GR\
TEST_MOUSE(x1,x2,y,y+1)
#define VLINE_CLIP_PREFACE \
int mouse_hidden;\
TEST_INACTIVITY\
CLIP_DRAW_VLINE\
START_GR\
TEST_MOUSE(x,x+1,y1,y2)
#define SCROLL_CLIP_PREFACE \
int mouse_hidden;\
TEST_INACTIVITY_0\
START_GR_0\
TEST_MOUSE(dev->clip.x1, dev->clip.x2, dev->clip.y1, dev->clip.y2)
#include "fbcommon.inc"
static void redraw_mouse(void);
static void fb_mouse_move(int dx, int dy)
{
struct links_event ev;
mouse_x += dx;
mouse_y += dy;
ev.ev = EV_MOUSE;
if (mouse_x >= fb_xsize) mouse_x = fb_xsize - 1;
if (mouse_y >= fb_ysize) mouse_y = fb_ysize - 1;
if (mouse_x < 0) mouse_x = 0;
if (mouse_y < 0) mouse_y = 0;
ev.x = mouse_x;
ev.y = mouse_y;
ev.b = B_MOVE;
if (((last_mouse_buttons & BM_ACT) == B_DOWN || (last_mouse_buttons & BM_ACT) == B_DRAG) &&
!BM_IS_WHEEL(last_mouse_buttons)) {
ev.b = (last_mouse_buttons & BM_BUTT) | B_DRAG;
}
if (!current_virtual_device) return;
if (current_virtual_device->mouse_handler) current_virtual_device->mouse_handler(current_virtual_device, ev.x, ev.y, (int)ev.b);
redraw_mouse();
}
static void fb_key_in(struct itrm *p, unsigned char *ev_, int size)
{
int rs;
struct links_event *ev = (struct links_event *)(void *)ev_;
if (size != sizeof(struct links_event)) return;
if (ev->ev == EV_ABORT) terminate_loop = 1;
if (ev->ev != EV_KBD) return;
if (ev->y & KBD_PASTING) goto skip;
if ((ev->y & (KBD_CTRL | KBD_ALT)) == KBD_ALT && ev->x >= '0' && ev->x <= '9') {
switch_virtual_device((ev->x - '1' + 10) % 10);
goto flush_ret;
}
if (!ev->y && ev->x == KBD_F5) fb_mouse_move(-3, 0);
else if (!ev->y && ev->x == KBD_F6) fb_mouse_move(0, 3);
else if (!ev->y && ev->x == KBD_F7) fb_mouse_move(0, -3);
else if (!ev->y && ev->x == KBD_F8) fb_mouse_move(3, 0);
else {
skip:
if (g_kbd_codepage(&fb_driver) != utf8_table && ev->x >= 128 && ev->x <= 255)
if ((ev->x = cp2u(ev->x, g_kbd_codepage(&fb_driver))) == -1) return;
if (current_virtual_device && current_virtual_device->keyboard_handler) current_virtual_device->keyboard_handler(current_virtual_device, ev->x, ev->y);
}
flush_ret:
EINTRLOOP(rs, fsync(fb_handle));
}
#define mouse_getscansegment(buf,x,y,w) memcpy_to_fb(buf, fb_vmem + y * fb_linesize + x * fb_pixelsize, w, 1)
#define mouse_drawscansegment(ptr,x,y,w) memcpy_to_fb(fb_vmem + y * fb_linesize + x * fb_pixelsize, ptr, w, 0)
#define do_with_mouse_device(cmd) \
do { \
struct graphics_device *current_virtual_device_backup; \
\
current_virtual_device_backup = current_virtual_device; \
current_virtual_device = mouse_graphics_device; \
cmd; \
current_virtual_device = current_virtual_device_backup; \
} while (0)
/* Flushes the background_buffer onscreen where it was originally taken from. */
static void place_mouse_background(void)
{
struct bitmap bmp;
bmp.x=arrow_width;
bmp.y=arrow_height;
bmp.skip=arrow_width*fb_pixelsize;
bmp.data=background_buffer;
do_with_mouse_device(fb_draw_bitmap(mouse_graphics_device, &bmp, background_x, background_y));
}
/* Only when the old and new mouse don't interfere. Using it on interfering mouses would
* cause a flicker.
*/
static void hide_mouse(void)
{
global_mouse_hidden=1;
place_mouse_background();
}
/* Gets background from the screen (clipping provided only right and bottom) to the
* passed buffer.
*/
static void get_mouse_background(unsigned char *buffer_ptr)
{
int width,height,skip,x,y;
skip=arrow_width*fb_pixelsize;
x=mouse_x;
y=mouse_y;
width=fb_pixelsize*(arrow_width+x>fb_xsize?fb_xsize-x:arrow_width);
height=arrow_height+y>fb_ysize?fb_ysize-y:arrow_height;
accel_sync();
for (;height;height--){
mouse_getscansegment(buffer_ptr,x,y,width);
buffer_ptr+=skip;
y++;
}
}
/* Overlays the arrow's image over the mouse_buffer
* Doesn't draw anything into the screen
*/
static void render_mouse_arrow(void)
{
int x,y;
unsigned reg0, reg1;
unsigned char *mouse_ptr=mouse_buffer;
const unsigned *arrow_ptr=arrow;
for (y=arrow_height;y;y--){
reg0=*arrow_ptr;
reg1=arrow_ptr[1];
arrow_ptr+=2;
for (x=arrow_width;x;)
{
unsigned mask=1U<<(--x);
if (reg0&mask)
memcpy (mouse_ptr, &mouse_black, fb_pixelsize);
else if (reg1&mask)
memcpy (mouse_ptr, &mouse_white, fb_pixelsize);
mouse_ptr+=fb_pixelsize;
}
}
}
static void place_mouse(void)
{
struct bitmap bmp;
if (!fb_have_mouse)
return;
bmp.x=arrow_width;
bmp.y=arrow_height;
bmp.skip=arrow_width*fb_pixelsize;
bmp.data=mouse_buffer;
do_with_mouse_device(fb_draw_bitmap(mouse_graphics_device, &bmp, mouse_x, mouse_y));
global_mouse_hidden=0;
}
/* Only when the old and the new mouse positions do not interfere. Using this routine
* on interfering positions would cause a flicker.
*/
static void show_mouse(void)
{
get_mouse_background(background_buffer);
background_x=mouse_x;
background_y=mouse_y;
memcpy(mouse_buffer,background_buffer,fb_pixelsize*arrow_area);
render_mouse_arrow();
place_mouse();
}
/* Doesn't draw anything into the screen
*/
static void put_and_clip_background_buffer_over_mouse_buffer(void)
{
unsigned char *bbufptr=background_buffer, *mbufptr=mouse_buffer;
int left=background_x-mouse_x;
int top=background_y-mouse_y;
int right,bottom;
int bmpixelsizeL=fb_pixelsize;
int number_of_bytes;
int byte_skip;
right=left+arrow_width;
bottom=top+arrow_height;
if (left<0){
bbufptr-=left*bmpixelsizeL;
left=0;
}
if (right>arrow_width) right=arrow_width;
if (top<0){
bbufptr-=top*bmpixelsizeL*arrow_width;
top=0;
}
if (bottom>arrow_height) bottom=arrow_height;
mbufptr+=bmpixelsizeL*(left+arrow_width*top);
byte_skip=arrow_width*bmpixelsizeL;
number_of_bytes=bmpixelsizeL*(right-left);
for (;top<bottom;top++){
memcpy(mbufptr,bbufptr,number_of_bytes);
mbufptr+=byte_skip;
bbufptr+=byte_skip;
}
}
/* This draws both the contents of background_buffer and mouse_buffer in a scan
* way (left-right, top-bottom), so the flicker is reduced.
*/
static inline void place_mouse_composite(void)
{
int mouse_left=mouse_x;
int mouse_top=mouse_y;
int background_left=background_x;
int background_top=background_y;
int mouse_right=mouse_left+arrow_width;
int mouse_bottom=mouse_top+arrow_height;
int background_right=background_left+arrow_width;
int background_bottom=background_top+arrow_height;
int skip=arrow_width*fb_pixelsize;
int background_length,mouse_length;
unsigned char *mouse_ptr=mouse_buffer,*background_ptr=background_buffer;
int yend;
if (mouse_bottom>fb_ysize) mouse_bottom=fb_ysize;
if (background_bottom>fb_ysize) background_bottom=fb_ysize;
accel_sync();
/* Let's do the top part */
if (background_top<mouse_top){
/* Draw the background */
background_length=background_right>fb_xsize?fb_xsize-background_left
:arrow_width;
for (;background_top<mouse_top;background_top++){
mouse_drawscansegment(background_ptr,background_left
,background_top,background_length*fb_pixelsize);
background_ptr+=skip;
}
}else if (background_top>mouse_top){
/* Draw the mouse */
mouse_length=mouse_right>fb_xsize
?fb_xsize-mouse_left:arrow_width;
for (;mouse_top<background_top;mouse_top++){
mouse_drawscansegment(mouse_ptr,mouse_left,mouse_top,mouse_length*fb_pixelsize);
mouse_ptr+=skip;
}
}
/* Let's do the middle part */
yend=mouse_bottom<background_bottom?mouse_bottom:background_bottom;
if (background_left<mouse_left){
/* Draw background, mouse */
mouse_length=mouse_right>fb_xsize?fb_xsize-mouse_left:arrow_width;
for (;mouse_top<yend;mouse_top++){
mouse_drawscansegment(background_ptr,background_left,mouse_top
,(mouse_left-background_left)*fb_pixelsize);
mouse_drawscansegment(mouse_ptr,mouse_left,mouse_top,mouse_length*fb_pixelsize);
mouse_ptr+=skip;
background_ptr+=skip;
}
}else{
int l1, l2, l3;
/* Draw mouse, background */
mouse_length=mouse_right>fb_xsize?fb_xsize-mouse_left:arrow_width;
background_length=background_right-mouse_right;
if (background_length+mouse_right>fb_xsize)
background_length=fb_xsize-mouse_right;
l1=mouse_length*fb_pixelsize;
l2=(mouse_right-background_left)*fb_pixelsize;
l3=background_length*fb_pixelsize;
for (;mouse_top<yend;mouse_top++){
mouse_drawscansegment(mouse_ptr,mouse_left,mouse_top,l1);
if (background_length>0)
mouse_drawscansegment(
background_ptr + l2,
mouse_right,mouse_top, l3);
mouse_ptr+=skip;
background_ptr+=skip;
}
}
if (background_bottom<mouse_bottom){
/* Count over bottoms! tops will be invalid! */
/* Draw mouse */
mouse_length=mouse_right>fb_xsize?fb_xsize-mouse_left
:arrow_width;
for (;background_bottom<mouse_bottom;background_bottom++){
mouse_drawscansegment(mouse_ptr,mouse_left,background_bottom
,mouse_length*fb_pixelsize);
mouse_ptr+=skip;
}
}else{
/* Draw background */
background_length=background_right>fb_xsize?fb_xsize-background_left
:arrow_width;
for (;mouse_bottom<background_bottom;mouse_bottom++){
mouse_drawscansegment(background_ptr,background_left,mouse_bottom
,background_length*fb_pixelsize);
background_ptr+=skip;
}
}
}
/* This moves the mouse a sophisticated way when the old and new position of the
* cursor overlap.
*/
static inline void redraw_mouse_sophisticated(void)
{
int new_background_x, new_background_y;
get_mouse_background(mouse_buffer);
put_and_clip_background_buffer_over_mouse_buffer();
memcpy(new_background_buffer,mouse_buffer,fb_pixelsize*arrow_area);
new_background_x=mouse_x;
new_background_y=mouse_y;
render_mouse_arrow();
place_mouse_composite();
memcpy(background_buffer,new_background_buffer,fb_pixelsize*arrow_area);
background_x=new_background_x;
background_y=new_background_y;
}
static void redraw_mouse(void)
{
int rs;
START_GR;
if (mouse_x!=background_x||mouse_y!=background_y){
if (RECTANGLES_INTERSECT(
background_x, background_x+arrow_width,
mouse_x, mouse_x+arrow_width,
background_y, background_y+arrow_height,
mouse_y, mouse_y+arrow_height)){
redraw_mouse_sophisticated();
}else{
/* Do a normal hide/show */
get_mouse_background(mouse_buffer);
memcpy(new_background_buffer,
mouse_buffer,arrow_area*fb_pixelsize);
render_mouse_arrow();
hide_mouse();
place_mouse();
memcpy(background_buffer,new_background_buffer
,arrow_area*fb_pixelsize);
background_x=mouse_x;
background_y=mouse_y;
}
}
END_GR;
}
static void alloc_palette(struct palette *pal)
{
pal->red = mem_calloc(sizeof(unsigned short) * fb_palette_colors);
pal->green = mem_calloc(sizeof(unsigned short) * fb_palette_colors);
pal->blue = mem_calloc(sizeof(unsigned short) * fb_palette_colors);
}
static void free_palette(struct palette *pal)
{
if (pal->red) mem_free(pal->red);
if (pal->green) mem_free(pal->green);
if (pal->blue) mem_free(pal->blue);
}
/* This is an empiric magic that ensures
* Good white purity
* Correct rounding and dithering prediction
* And this is the cabbala:
* 063 021 063
* 009 009 021
* 255 085 255
* 036 036 084
*/
static void generate_palette(struct palette *pal)
{
int a;
alloc_palette(pal);
switch (fb_colors) {
case 16:
case 256:
for (a = 0; a < fb_palette_colors; a++) {
unsigned rgb[3];
int cols = fb_colors;
if (cols == 256 && (fb_driver.depth & 0x300) == 0x300)
cols = 216;
q_palette(cols, a, 65535, rgb);
pal->red[a] = rgb[0];
pal->green[a] = rgb[1];
pal->blue[a] = rgb[2];
}
break;
case 32768:
for (a = 0; a < fb_palette_colors; a++) {
/*
pal->red[a] = ((a >> 10) & 31) * (65535 / 31);
pal->green[a] = ((a >> 5) & 31) * (65535 / 31);
pal->blue[a] = (a & 31) * (65535 / 31);
*/
pal->red[a] =
pal->green[a] =
pal->blue[a] = (((a & 31) * 255) / 31) * 257;
}
break;
case 65536:
for (a = 0; a < fb_palette_colors; a++){
/*
pal->red[a] = ((a >> 11) & 31) * (65535 / 31);
pal->green[a] = ((a >> 5) & 63) * (65535 / 63);
pal->blue[a] = (a & 31) * (65535 / 31);
*/
pal->green[a] = (((a & 63) * 255) / 64) * 257;
pal->red[a] =
pal->blue[a] = (((a & 31) * 255) / 32) * 257;
}
break;
default:
for (a = 0; a < fb_palette_colors; a++) {
pal->red[a] =
pal->green[a] =
pal->blue[a] = a * 257;
/* stuff it in both high and low byte */
}
}
}
static void set_palette(struct palette *pal)
{
struct fb_cmap cmap;
int i;
unsigned short *red = pal->red;
unsigned short *green = pal->green;
unsigned short *blue = pal->blue;
__u16 *r, *g, *b, *t;
int rs;
if (!red || !green || !blue)
return;
r = mem_alloc(fb_palette_colors * sizeof(__u16));
g = mem_alloc(fb_palette_colors * sizeof(__u16));
b = mem_alloc(fb_palette_colors * sizeof(__u16));
t = mem_calloc(fb_palette_colors * sizeof(__u16));
for (i = 0; i < fb_palette_colors; i++) {
r[i] = red[i];
g[i] = green[i];
b[i] = blue[i];
/*fprintf(stderr, "%d %d %d\n", r[i], g[i], b[i]);*/
/*fprintf(stderr, "%5x: %5x\t%5x\t%5x\t%5x\n",i,r[i],g[i],b[i],t[i]);*/
}
cmap.start = 0;
cmap.len = fb_palette_colors;
cmap.red = r;
cmap.green = g;
cmap.blue = b;
cmap.transp = t;
EINTRLOOP(rs, ioctl(fb_handle, FBIOPUTCMAP, &cmap));
if (rs == -1) {
/*error("Cannot set palette\n")*/;
}
mem_free(r);
mem_free(g);
mem_free(b);
mem_free(t);
}
static void get_palette(struct palette *pal)
{
struct fb_cmap cmap;
int i;
__u16 *r, *g, *b, *t;
int rs;
pal->red = pal->green = pal->blue = NULL;
r = mem_alloc(fb_palette_colors * sizeof(__u16));
g = mem_alloc(fb_palette_colors * sizeof(__u16));
b = mem_alloc(fb_palette_colors * sizeof(__u16));
t = mem_alloc(fb_palette_colors * sizeof(__u16));
cmap.start = 0;
cmap.len = fb_palette_colors;
cmap.red = r;
cmap.green = g;
cmap.blue = b;
cmap.transp = t;
EINTRLOOP(rs, ioctl(fb_handle, FBIOGETCMAP, &cmap));
if (rs == -1) {
/*error("Cannot get palette\n")*/;
goto skip;
}
alloc_palette(pal);
for (i = 0; i < fb_palette_colors; i++) {
/*printf("%d %d %d\n",r[i],g[i],b[i]);*/
pal->red[i] = r[i];
pal->green[i] = g[i];
pal->blue[i] = b[i];
}
skip:
mem_free(r);
mem_free(g);
mem_free(b);
mem_free(t);
}
static void fb_clear_videoram(void)
{
int rs;
START_GR
#ifdef USE_FB_ACCEL_FILLRECT
if (accel_flags & FB_ACCEL_FILLRECT_ACCELERATED) {
struct fb_fillrect f;
f.dx = 0;
f.dy = 0;
f.width = fb_xsize + border_left + border_right;
f.height = fb_ysize + border_top + border_bottom;
f.color = 0;
f.rop = ROP_COPY;
EINTRLOOP(rs, ioctl(fb_handle, FBIO_ACCEL_FILLRECT_SYNC, &f));
if (rs < 0) {
error("fb_clear_videoram accel failed\n");
goto no_accel;
}
} else
no_accel:
#endif
{
accel_sync();
memset(fb_mem, 0, (border_top + fb_ysize + border_bottom) * fb_linesize);
/*{
int size = (border_top + fb_ysize + border_bottom) * fb_linesize;
int pos;
for (pos = 0; pos < size; pos++) {
fb_mem[pos] = (unsigned char)pos;
}
}*/
}
END_GR
}
static void fb_switch_signal_rel(void *data)
{
int rs;
fb_active = 0;
if (!in_gr_operation) {
accel_sync();
EINTRLOOP(rs, ioctl(TTY, VT_RELDISP, 1));
}
}
static void fb_switch_signal_acq(void *data)
{
struct vt_stat st;
int rs;
EINTRLOOP(rs, ioctl(TTY, VT_GETSTATE, &st));
if (rs) return;
if (st.v_active != fb_console) return;
INC_IN_GR
fb_active = 1;
EINTRLOOP(rs, ioctl(TTY, VT_RELDISP, VT_ACKACQ));
/*
* There is a race condition in Linux NVidia framebuffer driver
* It still draws into a framebuffer here, so we have to sleep
*/
portable_sleep(10);
if (have_cmap && current_virtual_device)
set_palette(&global_pal);
END_GR
if (border_left | border_top | border_right | border_bottom) fb_clear_videoram();
if (current_virtual_device) current_virtual_device->redraw_handler(current_virtual_device, ¤t_virtual_device->size);
EINTRLOOP(rs, fsync(fb_handle));
}
static unsigned char *fb_switch_init(void)
{
int rs;
INC_IN_GR
/* If we use threads, the signal handler may execute on a different
thread. framebuf.c doesn't handle different-thread signals, so
we must switch to synchronous signal handling when using threads */
install_signal_handler(SIG_REL, fb_switch_signal_rel, NULL,
#ifndef EXEC_IN_THREADS
1
#else
0
#endif
);
install_signal_handler(SIG_ACQ, fb_switch_signal_acq, NULL, 0);
EINTRLOOP(rs, ioctl(TTY, VT_GETMODE, &vt_omode));
if (rs == -1) {
in_gr_operation--;
return stracpy(cast_uchar "Could not get VT mode.\n");
}
memcpy(&vt_mode, &vt_omode, sizeof(vt_mode));
vt_mode.mode = VT_PROCESS;
vt_mode.waitv = 0;
vt_mode.relsig = SIG_REL;
vt_mode.acqsig = SIG_ACQ;
EINTRLOOP(rs, ioctl(TTY, VT_SETMODE, &vt_mode));
if (rs == -1) {
in_gr_operation--;
return stracpy(cast_uchar "Could not set VT mode.\n");
}
EINTRLOOP(rs, ioctl(TTY, VT_WAITACTIVE, fb_console));
fb_active = 1;
return NULL;
}
static void fb_switch_shutdown(void)
{
int rs;
if (in_gr_operation <= 0) internal_error("fb_switch_shutdown: in_gr_operation %d", in_gr_operation);
if (!fb_active && in_gr_operation == 1) {
EINTRLOOP(rs, ioctl(TTY, VT_RELDISP, 1));
}
EINTRLOOP(rs, ioctl(TTY, VT_SETMODE, &vt_omode));
install_signal_handler(SIG_REL, (void (*)(void *))NULL, (void*)SIG_REL, 1);
install_signal_handler(SIG_ACQ, (void (*)(void *))NULL, (void*)SIG_ACQ, 0);
in_gr_operation--;
}
static void fb_shutdown_palette(void)
{
if (have_cmap) {
if (fb_active)
set_palette(&old_palette);
free_palette(&old_palette);
free_palette(&global_pal);
}
}
static void fb_ctrl_c(void *i_)
{
kbd_ctrl_c();
}
static void unhandle_fb_mouse(void);
static void fb_gpm_in(void *nic)
{
struct links_event ev;
int g;
Gpm_Event gev;
int rs;
again:
set_handlers(fb_hgpm, (void (*)(void *))NULL, (void (*)(void *))NULL, NULL);
save_gpm_signals();
g = Gpm_GetEvent(&gev);
restore_gpm_signals();
if (g <= 0) {
fb_hgpm = -1;
hide_mouse();
unhandle_fb_mouse();
return;
}
set_handlers(fb_hgpm, fb_gpm_in, (void (*)(void *))NULL, NULL);
if (fb_hmice != -1)
return;
/*fprintf(stderr, "%x %x %d %d %d %d\n", gev.type, gev.buttons, gev.dx, gev.dy, gev.wdx, gev.wdy);*/
if (gev.dx || gev.dy) {
if (!((int)gev.type & gpm_smooth)) {
mouse_x += gev.dx * 8;
mouse_y += gev.dy * 8;
}
#ifdef GPM_HAVE_SMOOTH
else {
mouse_x += gev.dx;
mouse_y += gev.dy;
}
#endif
}
ev.ev = EV_MOUSE;
if (mouse_x >= fb_xsize) mouse_x = fb_xsize - 1;
if (mouse_y >= fb_ysize) mouse_y = fb_ysize - 1;
if (mouse_x < 0) mouse_x = 0;
if (mouse_y < 0) mouse_y = 0;
if (!((int)gev.type & gpm_smooth) && (gev.dx || gev.dy)) {
mouse_x = (mouse_x + 8) / 8 * 8 - 4;
mouse_y = (mouse_y + 8) / 8 * 8 - 4;
if (mouse_x >= fb_xsize) mouse_x = fb_xsize - 1;
if (mouse_y >= fb_ysize) mouse_y = fb_ysize - 1;
if (mouse_x < 0) mouse_x = 0;
if (mouse_y < 0) mouse_y = 0;
}
ev.x = mouse_x;
ev.y = mouse_y;
if (gev.buttons & GPM_B_LEFT) ev.b = B_LEFT;
else if (gev.buttons & GPM_B_MIDDLE) ev.b = B_MIDDLE;
else if (gev.buttons & GPM_B_RIGHT) ev.b = B_RIGHT;
#ifdef GPM_B_FOURTH
else if (gev.buttons & GPM_B_FOURTH) ev.b = B_FOURTH;
#endif
#ifdef GPM_B_UP
else if (gev.buttons & GPM_B_UP) ev.b = B_FIFTH;
#endif
#ifdef GPM_B_DOWN
else if (gev.buttons & GPM_B_DOWN) ev.b = B_SIXTH;
#endif
else ev.b = 0;
if ((int)gev.type & GPM_DOWN) ev.b |= B_DOWN;
else if ((int)gev.type & GPM_UP) ev.b |= B_UP;
else if ((int)gev.type & GPM_DRAG) ev.b |= B_DRAG;
else ev.b |= B_MOVE;