| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| #include <fcntl.h> |
| #include <stdio.h> |
| |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <sys/types.h> |
| |
| #include <linux/fb.h> |
| #include <linux/kd.h> |
| |
| #include <pixelflinger/pixelflinger.h> |
| |
| #include "font_10x18.h" |
| #include "minui.h" |
| |
| #if defined(RECOVERY_BGRA) |
| #define PIXEL_FORMAT GGL_PIXEL_FORMAT_BGRA_8888 |
| #define PIXEL_SIZE 4 |
| #elif defined(RECOVERY_RGBX) |
| #define PIXEL_FORMAT GGL_PIXEL_FORMAT_RGBX_8888 |
| #define PIXEL_SIZE 4 |
| #else |
| #define PIXEL_FORMAT GGL_PIXEL_FORMAT_RGB_565 |
| #define PIXEL_SIZE 2 |
| #endif |
| |
| typedef struct { |
| GGLSurface texture; |
| unsigned cwidth; |
| unsigned cheight; |
| unsigned ascent; |
| } GRFont; |
| |
| static GRFont *gr_font = 0; |
| static GGLContext *gr_context = 0; |
| static GGLSurface gr_font_texture; |
| static GGLSurface gr_framebuffer[2]; |
| static GGLSurface gr_mem_surface; |
| static unsigned gr_active_fb = 0; |
| |
| static int gr_fb_fd = -1; |
| static int gr_vt_fd = -1; |
| |
| static struct fb_var_screeninfo vi; |
| static struct fb_fix_screeninfo fi; |
| |
| static int get_framebuffer(GGLSurface *fb) |
| { |
| int fd; |
| void *bits; |
| |
| fd = open("/dev/graphics/fb0", O_RDWR); |
| if (fd < 0) { |
| perror("cannot open fb0"); |
| return -1; |
| } |
| |
| if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) { |
| perror("failed to get fb0 info"); |
| close(fd); |
| return -1; |
| } |
| |
| if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) { |
| perror("failed to get fb0 info"); |
| close(fd); |
| return -1; |
| } |
| |
| bits = mmap(0, fi.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); |
| if (bits == MAP_FAILED) { |
| perror("failed to mmap framebuffer"); |
| close(fd); |
| return -1; |
| } |
| |
| fb->version = sizeof(*fb); |
| fb->width = vi.xres; |
| fb->height = vi.yres; |
| fb->stride = fi.line_length/PIXEL_SIZE; |
| fb->data = bits; |
| fb->format = PIXEL_FORMAT; |
| memset(fb->data, 0, vi.yres * fi.line_length); |
| |
| fb++; |
| |
| fb->version = sizeof(*fb); |
| fb->width = vi.xres; |
| fb->height = vi.yres; |
| fb->stride = fi.line_length/PIXEL_SIZE; |
| fb->data = (void*) (((unsigned) bits) + vi.yres * fi.line_length); |
| fb->format = PIXEL_FORMAT; |
| memset(fb->data, 0, vi.yres * fi.line_length); |
| |
| return fd; |
| } |
| |
| static void get_memory_surface(GGLSurface* ms) { |
| ms->version = sizeof(*ms); |
| ms->width = vi.xres; |
| ms->height = vi.yres; |
| ms->stride = fi.line_length/PIXEL_SIZE; |
| ms->data = malloc(fi.line_length * vi.yres); |
| ms->format = PIXEL_FORMAT; |
| } |
| |
| static void set_active_framebuffer(unsigned n) |
| { |
| if (n > 1) return; |
| vi.yres_virtual = vi.yres * PIXEL_SIZE; |
| vi.yoffset = n * vi.yres; |
| vi.bits_per_pixel = PIXEL_SIZE * 8; |
| if (ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) { |
| perror("active fb swap failed"); |
| } |
| } |
| |
| void gr_flip(void) |
| { |
| GGLContext *gl = gr_context; |
| |
| /* swap front and back buffers */ |
| gr_active_fb = (gr_active_fb + 1) & 1; |
| |
| /* copy data from the in-memory surface to the buffer we're about |
| * to make active. */ |
| memcpy(gr_framebuffer[gr_active_fb].data, gr_mem_surface.data, |
| fi.line_length * vi.yres); |
| |
| /* inform the display driver */ |
| set_active_framebuffer(gr_active_fb); |
| } |
| |
| void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a) |
| { |
| GGLContext *gl = gr_context; |
| GGLint color[4]; |
| color[0] = ((r << 8) | r) + 1; |
| color[1] = ((g << 8) | g) + 1; |
| color[2] = ((b << 8) | b) + 1; |
| color[3] = ((a << 8) | a) + 1; |
| gl->color4xv(gl, color); |
| } |
| |
| int gr_measure(const char *s) |
| { |
| return gr_font->cwidth * strlen(s); |
| } |
| |
| int gr_text(int x, int y, const char *s) |
| { |
| GGLContext *gl = gr_context; |
| GRFont *font = gr_font; |
| unsigned off; |
| |
| y -= font->ascent; |
| |
| gl->bindTexture(gl, &font->texture); |
| gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE); |
| gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE); |
| gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE); |
| gl->enable(gl, GGL_TEXTURE_2D); |
| |
| while((off = *s++)) { |
| off -= 32; |
| if (off < 96) { |
| gl->texCoord2i(gl, (off * font->cwidth) - x, 0 - y); |
| gl->recti(gl, x, y, x + font->cwidth, y + font->cheight); |
| } |
| x += font->cwidth; |
| } |
| |
| return x; |
| } |
| |
| void gr_fill(int x, int y, int w, int h) |
| { |
| GGLContext *gl = gr_context; |
| gl->disable(gl, GGL_TEXTURE_2D); |
| gl->recti(gl, x, y, w, h); |
| } |
| |
| void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) { |
| if (gr_context == NULL) { |
| return; |
| } |
| GGLContext *gl = gr_context; |
| |
| gl->bindTexture(gl, (GGLSurface*) source); |
| gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE); |
| gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE); |
| gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE); |
| gl->enable(gl, GGL_TEXTURE_2D); |
| gl->texCoord2i(gl, sx - dx, sy - dy); |
| gl->recti(gl, dx, dy, dx + w, dy + h); |
| } |
| |
| unsigned int gr_get_width(gr_surface surface) { |
| if (surface == NULL) { |
| return 0; |
| } |
| return ((GGLSurface*) surface)->width; |
| } |
| |
| unsigned int gr_get_height(gr_surface surface) { |
| if (surface == NULL) { |
| return 0; |
| } |
| return ((GGLSurface*) surface)->height; |
| } |
| |
| static void gr_init_font(void) |
| { |
| GGLSurface *ftex; |
| unsigned char *bits, *rle; |
| unsigned char *in, data; |
| |
| gr_font = calloc(sizeof(*gr_font), 1); |
| ftex = &gr_font->texture; |
| |
| bits = malloc(font.width * font.height); |
| |
| ftex->version = sizeof(*ftex); |
| ftex->width = font.width; |
| ftex->height = font.height; |
| ftex->stride = font.width; |
| ftex->data = (void*) bits; |
| ftex->format = GGL_PIXEL_FORMAT_A_8; |
| |
| in = font.rundata; |
| while((data = *in++)) { |
| memset(bits, (data & 0x80) ? 255 : 0, data & 0x7f); |
| bits += (data & 0x7f); |
| } |
| |
| gr_font->cwidth = font.cwidth; |
| gr_font->cheight = font.cheight; |
| gr_font->ascent = font.cheight - 2; |
| } |
| |
| int gr_init(void) |
| { |
| gglInit(&gr_context); |
| GGLContext *gl = gr_context; |
| |
| gr_init_font(); |
| gr_vt_fd = open("/dev/tty0", O_RDWR | O_SYNC); |
| if (gr_vt_fd < 0) { |
| // This is non-fatal; post-Cupcake kernels don't have tty0. |
| perror("can't open /dev/tty0"); |
| } else if (ioctl(gr_vt_fd, KDSETMODE, (void*) KD_GRAPHICS)) { |
| // However, if we do open tty0, we expect the ioctl to work. |
| perror("failed KDSETMODE to KD_GRAPHICS on tty0"); |
| gr_exit(); |
| return -1; |
| } |
| |
| gr_fb_fd = get_framebuffer(gr_framebuffer); |
| if (gr_fb_fd < 0) { |
| gr_exit(); |
| return -1; |
| } |
| |
| get_memory_surface(&gr_mem_surface); |
| |
| fprintf(stderr, "framebuffer: fd %d (%d x %d)\n", |
| gr_fb_fd, gr_framebuffer[0].width, gr_framebuffer[0].height); |
| |
| /* start with 0 as front (displayed) and 1 as back (drawing) */ |
| gr_active_fb = 0; |
| set_active_framebuffer(0); |
| gl->colorBuffer(gl, &gr_mem_surface); |
| |
| gl->activeTexture(gl, 0); |
| gl->enable(gl, GGL_BLEND); |
| gl->blendFunc(gl, GGL_SRC_ALPHA, GGL_ONE_MINUS_SRC_ALPHA); |
| |
| return 0; |
| } |
| |
| void gr_exit(void) |
| { |
| close(gr_fb_fd); |
| gr_fb_fd = -1; |
| |
| free(gr_mem_surface.data); |
| |
| ioctl(gr_vt_fd, KDSETMODE, (void*) KD_TEXT); |
| close(gr_vt_fd); |
| gr_vt_fd = -1; |
| } |
| |
| int gr_fb_width(void) |
| { |
| return gr_framebuffer[0].width; |
| } |
| |
| int gr_fb_height(void) |
| { |
| return gr_framebuffer[0].height; |
| } |
| |
| gr_pixel *gr_fb_data(void) |
| { |
| return (unsigned short *) gr_mem_surface.data; |
| } |