+++ /dev/null
-/*
-winnie - an experimental window system
-
-Copyright (C) 2013 Eleni Maria Stea
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-Author: Eleni Maria Stea <elene.mst@gmail.com>
-*/
-
-#ifdef WINNIE_FBDEV
-#include <errno.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/time.h>
-#include <unistd.h>
-
-#include <linux/fb.h>
-
-#include "gfx.h"
-#include "shalloc.h"
-#include "winnie.h"
-
-#define FRAMEBUFFER_SIZE(xsz, ysz, bpp) ((xsz) * (ysz) * (bpp) / CHAR_BIT)
-
-static unsigned char *framebuffer;
-static int dev_fd;
-static int rgb_order[3];
-
-struct Graphics {
- Rect screen_rect;
- Rect clipping_rect;
- int color_depth;
- Pixmap *pixmap;
-};
-
-static Graphics *gfx;
-
-bool init_gfx()
-{
- if(!(gfx = (Graphics*)sh_malloc(sizeof *gfx))) {
- return false;
- }
-
- get_subsys()->graphics_offset = (int)((char*)gfx - (char*)get_pool());
-
- dev_fd = -1;
-
- if((dev_fd = open("/dev/fb0", O_RDWR)) == -1) {
- fprintf(stderr, "Cannot open /dev/fb0 : %s\n", strerror(errno));
- return false;
- }
-
- fb_var_screeninfo sinfo;
- if(ioctl(dev_fd, FBIOGET_VSCREENINFO, &sinfo) == -1) {
- close(dev_fd);
- dev_fd = -1;
- fprintf(stderr, "Unable to get screen info : %s\n", strerror(errno));
- return false;
- }
-
- printf("width : %d height : %d\n : bpp : %d\n", sinfo.xres, sinfo.yres, sinfo.bits_per_pixel);
- printf("virtual w: %d virtual h: %d\n", sinfo.xres_virtual, sinfo.yres_virtual);
-
- gfx->screen_rect.x = gfx->screen_rect.y = 0;
- gfx->screen_rect.width = sinfo.xres_virtual;
- gfx->screen_rect.height = sinfo.yres_virtual;
- gfx->color_depth = sinfo.bits_per_pixel;
-
- rgb_order[0] = sinfo.red.offset / 8;
- rgb_order[1] = sinfo.green.offset / 8;
- rgb_order[2] = sinfo.blue.offset / 8;
-
- set_clipping_rect(gfx->screen_rect);
-
- int sz = FRAMEBUFFER_SIZE(gfx->screen_rect.width, gfx->screen_rect.height, gfx->color_depth);
- framebuffer = (unsigned char*)mmap(0, sz, PROT_READ | PROT_WRITE, MAP_SHARED, dev_fd, 0);
-
- if(framebuffer == (void*)-1) {
- close(dev_fd);
- dev_fd = -1;
- fprintf(stderr, "Cannot map the framebuffer to memory : %s\n", strerror(errno));
- return false;
- }
-
-// TODO: uncomment when I find how to use intelfb instead of i915 GRRRR.-
- fb_vblank vblank;
- if(ioctl(dev_fd, FBIOGET_VBLANK, &vblank) == -1) {
-// fprintf(stderr, "FBIOGET_VBLANK error: %s\n", strerror(errno));
- }
-/*
- else {
- printf("flags: %x\n", vblank.flags);
- printf("count: %d\n", vblank.count);
- printf("beam position: %d, %d\n", vblank.hcount, vblank.vcount);
- }
-*/
-
- if(!(gfx->pixmap = (Pixmap*)sh_malloc(sizeof(Pixmap)))) {
- fprintf(stderr, "Failed to allocate pixmap.\n");
- return false;
- }
-
- gfx->pixmap->width = gfx->screen_rect.width;
- gfx->pixmap->height = gfx->screen_rect.height;
-
- int fbsize = gfx->pixmap->width * gfx->pixmap->height * gfx->color_depth / 8;
- if(!(gfx->pixmap->pixels = (unsigned char*)sh_malloc(fbsize))) {
- fprintf(stderr, "failed to allocate the pixmap framebuffer.\n");
- return false;
- }
-
- return true;
-}
-
-void destroy_gfx()
-{
- clear_screen(0, 0, 0);
- gfx_update(gfx->screen_rect);
-
- if(dev_fd != -1) {
- close(dev_fd);
- }
-
- dev_fd = -1;
-
- munmap(framebuffer, FRAMEBUFFER_SIZE(gfx->screen_rect.width, gfx->screen_rect.height, gfx->color_depth));
- framebuffer = 0;
-
- sh_free(gfx->pixmap->pixels);
- gfx->pixmap->pixels = 0;
- sh_free(gfx->pixmap);
- sh_free(gfx);
-}
-
-unsigned char *get_framebuffer()
-{
- return gfx->pixmap->pixels;
-}
-
-Pixmap *get_framebuffer_pixmap()
-{
- return gfx->pixmap;
-}
-
-Rect get_screen_size()
-{
- return gfx->screen_rect;
-}
-
-int get_color_depth()
-{
- return gfx->color_depth;
-}
-
-void set_clipping_rect(const Rect &rect)
-{
- gfx->clipping_rect = rect_intersection(rect, get_screen_size());
-}
-
-const Rect &get_clipping_rect()
-{
- return gfx->clipping_rect;
-}
-
-void set_cursor_visibility(bool visible)
-{
- fb_cursor curs;
- curs.enable = visible ? 1 : 0;
-
- if(ioctl(dev_fd, FBIO_CURSOR, &curs) == -1) {
- fprintf(stderr, "Cannot toggle cursor visibility : %s\n", strerror(errno));
- }
-}
-
-void gfx_update(const Rect &upd_rect)
-{
- Rect rect = rect_intersection(upd_rect, gfx->screen_rect);
- unsigned char *sptr = gfx->pixmap->pixels + (rect.y * gfx->screen_rect.width + rect.x) * 4;
- unsigned char *dptr = framebuffer + (rect.y * gfx->screen_rect.width + rect.x) * 4;
-
- for(int i=0; i<rect.height; i++) {
- memcpy(dptr, sptr, rect.width * 4);
- sptr += gfx->screen_rect.width * 4;
- dptr += gfx->screen_rect.width * 4;
- }
-}
-
-void wait_vsync()
-{
- unsigned long arg = 0;
- if(ioctl(dev_fd, FBIO_WAITFORVSYNC, &arg) == -1) {
-// printf("ioctl error %s\n", strerror(errno));
- }
-}
-
-void get_rgb_order(int *r, int *g, int *b)
-{
- *r = rgb_order[0];
- *g = rgb_order[1];
- *b = rgb_order[2];
-}
-
-#endif // WINNIE_FBDEV
projects / winnie / blobdiff