--- /dev/null
+#ifdef WINNIE_FBDEV
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#include <linux/fb.h>
+
+#include "gfx.h"
+
+#define FRAMEBUFFER_SIZE(xsz, ysz, bpp) ((xsz) * (ysz) * (bpp) / CHAR_BIT)
+
+static unsigned char *framebuffer;
+static int dev_fd = -1;
+
+static Rect screen_rect;
+static int color_depth; // bits per pixel
+
+bool init_gfx()
+{
+ 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);
+
+ screen_rect.x = screen_rect.y = 0;
+ screen_rect.width = sinfo.xres_virtual;
+ screen_rect.height = sinfo.yres_virtual;
+ color_depth = sinfo.bits_per_pixel;
+
+ int sz = FRAMEBUFFER_SIZE(screen_rect.width, screen_rect.height, 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;
+ }
+
+ return true;
+}
+
+void destroy_gfx()
+{
+ clear_screen(0, 0, 0);
+
+ if(dev_fd != -1) {
+ close(dev_fd);
+ }
+
+ dev_fd = -1;
+
+ munmap(framebuffer, FRAMEBUFFER_SIZE(screen_rect.width, screen_rect.height, color_depth));
+ framebuffer = 0;
+}
+
+unsigned char *get_framebuffer()
+{
+ return framebuffer;
+}
+
+Rect get_screen_size()
+{
+ return screen_rect;
+}
+
+int get_color_depth()
+{
+ return color_depth;
+}
+
+void clear_screen(int r, int g, int b)
+{
+ fill_rect(screen_rect, r, g, b);
+}
+
+void fill_rect(const Rect &rect, int r, int g, int b)
+{
+ Rect drect = rect;
+
+ if(drect.x < 0) {
+ drect.x = 0;
+ }
+
+ if(drect.y < 0) {
+ drect.y = 0;
+ }
+
+ unsigned char *fb = framebuffer + (drect.x + screen_rect.width * drect.y) * 4;
+ for(int i=0; i<drect.height; i++) {
+ for(int j=0; j<drect.width; j++) {
+ fb[j * 4] = b;
+ fb[j * 4 + 1] = g;
+ fb[j * 4 + 2] = r;
+ }
+ fb += screen_rect.width * 4;
+ }
+}
+
+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 blit(unsigned char *src_img, const Rect &src_rect, unsigned char* dest_img,
+ const Rect &dest_rect, int dest_x, int dest_y)
+{
+ int width = src_rect.width;
+ int height = src_rect.height;
+
+ int xoffs = dest_x - dest_rect.x;
+ if(xoffs < 0) {
+ dest_x = dest_rect.x;
+ width += xoffs;
+ }
+
+ int yoffs = dest_y - dest_rect.y;
+ if(yoffs < 0) {
+ dest_y = dest_rect.y;
+ height += yoffs;
+ }
+
+ int xend = dest_x + width;
+ if(xend >= dest_rect.width) {
+ width -= xend - dest_rect.width;
+ }
+
+ int yend = dest_y + height;
+ if(yend >= dest_rect.height) {
+ height -= yend - dest_rect.height;
+ }
+
+ if(width <= 0 || height <= 0) {
+ return;
+ }
+
+ unsigned char *sptr = src_img + (src_rect.y * src_rect.width + src_rect.x) * 4;
+ unsigned char *dptr = dest_img + (dest_y * dest_rect.width + dest_x) * 4;
+
+ for(int i=0; i<height; i++) {
+ memcpy(dptr, sptr, width * 4);
+ sptr += src_rect.width * 4;
+ dptr += dest_rect.width * 4;
+ }
+}
+
+void blit_key(unsigned char *src_img, const Rect &src_rect, unsigned char* dest_img,
+ const Rect &dest_rect, int dest_x, int dest_y, int key_r, int key_g, int key_b)
+{
+ int width = src_rect.width;
+ int height = src_rect.height;
+
+ int xoffs = dest_x - dest_rect.x;
+ if(xoffs < 0) {
+ dest_x = dest_rect.x;
+ width += xoffs;
+ }
+
+ int yoffs = dest_y - dest_rect.y;
+ if(yoffs < 0) {
+ dest_y = dest_rect.y;
+ height += yoffs;
+ }
+
+ int xend = dest_x + width;
+ if(xend >= dest_rect.width) {
+ width -= xend - dest_rect.width;
+ }
+
+ int yend = dest_y + height;
+ if(yend >= dest_rect.height) {
+ height -= yend - dest_rect.height;
+ }
+
+ if(width <= 0 || height <= 0) {
+ return;
+ }
+
+ unsigned char *sptr = src_img + (src_rect.y * src_rect.width + src_rect.x) * 4;
+ unsigned char *dptr = dest_img + (dest_y * dest_rect.width + dest_x) * 4;
+
+ for(int i=0; i<height; i++) {
+ for(int j=0; j<width; j++) {
+ int r = sptr[j * 4];
+ int g = sptr[j * 4 + 1];
+ int b = sptr[j * 4 + 2];
+
+ if(r != key_r || g != key_g || b != key_b) {
+ dptr[j * 4] = b;
+ dptr[j * 4 + 1] = g;
+ dptr[j * 4 + 2] = r;
+ }
+ }
+
+ sptr += src_rect.width * 4;
+ dptr += dest_rect.width * 4;
+ }
+}
+
+void gfx_update()
+{
+}
+
+#endif // WINNIE_FBDEV
projects / winnie / blobdiff