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Diffstat (limited to 'minui21/graphics.c')
| -rw-r--r-- | minui21/graphics.c | 522 |
1 files changed, 522 insertions, 0 deletions
diff --git a/minui21/graphics.c b/minui21/graphics.c new file mode 100644 index 000000000..580af297a --- /dev/null +++ b/minui21/graphics.c @@ -0,0 +1,522 @@ +/* + * 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 <stdbool.h> +#include <stdlib.h> +#include <unistd.h> + +#include <errno.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> + +#ifdef BOARD_USE_CUSTOM_RECOVERY_FONT +#include BOARD_USE_CUSTOM_RECOVERY_FONT +#else +#include "font_10x18.h" +#endif + +#include "minui.h" + +#if defined(RECOVERY_BGRA) +#define PIXEL_FORMAT GGL_PIXEL_FORMAT_BGRA_8888 +#define PIXEL_SIZE 4 +#elif defined(RECOVERY_RGBA) +#define PIXEL_FORMAT GGL_PIXEL_FORMAT_RGBA_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 + +#define NUM_BUFFERS 2 + +typedef struct { + GGLSurface* texture; + unsigned cwidth; + unsigned cheight; +} GRFont; + +static GRFont *gr_font = 0; +static GGLContext *gr_context = 0; +static GGLSurface gr_font_texture; +static GGLSurface gr_framebuffer[NUM_BUFFERS]; +static GGLSurface gr_mem_surface; +static unsigned gr_active_fb = 0; +static unsigned double_buffering = 0; +static int overscan_percent = OVERSCAN_PERCENT; +static int overscan_offset_x = 0; +static int overscan_offset_y = 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 bool has_overlay = false; + +bool target_has_overlay(char *version); +int free_ion_mem(void); +int alloc_ion_mem(unsigned int size); +int allocate_overlay(int fd, GGLSurface gr_fb[]); +int free_overlay(int fd); +int overlay_display_frame(int fd, GGLubyte* data, size_t size); + +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_VSCREENINFO, &vi) < 0) { + perror("failed to get fb0 info"); + close(fd); + return -1; + } + + vi.bits_per_pixel = PIXEL_SIZE * 8; + if (PIXEL_FORMAT == GGL_PIXEL_FORMAT_BGRA_8888) { + vi.red.offset = 8; + vi.red.length = 8; + vi.green.offset = 16; + vi.green.length = 8; + vi.blue.offset = 24; + vi.blue.length = 8; + vi.transp.offset = 0; + vi.transp.length = 8; + } else if (PIXEL_FORMAT == GGL_PIXEL_FORMAT_RGBA_8888) { + vi.red.offset = 0; + vi.red.length = 8; + vi.green.offset = 8; + vi.green.length = 8; + vi.blue.offset = 16; + vi.blue.length = 8; + vi.transp.offset = 24; + vi.transp.length = 8; + } else if (PIXEL_FORMAT == GGL_PIXEL_FORMAT_RGBX_8888) { + vi.red.offset = 24; + vi.red.length = 8; + vi.green.offset = 16; + vi.green.length = 8; + vi.blue.offset = 8; + vi.blue.length = 8; + vi.transp.offset = 0; + vi.transp.length = 8; + } else { /* RGB565*/ + vi.red.offset = 11; + vi.red.length = 5; + vi.green.offset = 5; + vi.green.length = 6; + vi.blue.offset = 0; + vi.blue.length = 5; + vi.transp.offset = 0; + vi.transp.length = 0; + } + if (ioctl(fd, FBIOPUT_VSCREENINFO, &vi) < 0) { + perror("failed to put fb0 info"); + close(fd); + return -1; + } + + if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) { + perror("failed to get fb0 info"); + close(fd); + return -1; + } + + has_overlay = target_has_overlay(fi.id); + + if (!has_overlay) { + 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; + } + } + + overscan_offset_x = vi.xres * overscan_percent / 100; + overscan_offset_y = vi.yres * overscan_percent / 100; + + fb->version = sizeof(*fb); + fb->width = vi.xres; + fb->height = vi.yres; + fb->stride = fi.line_length/PIXEL_SIZE; + fb->format = PIXEL_FORMAT; + if (!has_overlay) { + fb->data = bits; + memset(fb->data, 0, vi.yres * fi.line_length); + } + + fb++; + + /* check if we can use double buffering */ + if (vi.yres * fi.line_length * 2 > fi.smem_len) + return fd; + + double_buffering = 1; + + fb->version = sizeof(*fb); + fb->width = vi.xres; + fb->height = vi.yres; + fb->stride = fi.line_length/PIXEL_SIZE; + fb->format = PIXEL_FORMAT; + if (!has_overlay) { + fb->data = (void*) (((unsigned long) bits) + vi.yres * fi.line_length); + 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 || !double_buffering) return; + vi.yres_virtual = vi.yres * NUM_BUFFERS; + 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) +{ + if (-EINVAL == overlay_display_frame(gr_fb_fd, gr_mem_surface.data, + (fi.line_length * vi.yres))) { + GGLContext *gl = gr_context; + + /* swap front and back buffers */ + if (double_buffering) + 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); +} + +void gr_font_size(int *x, int *y) +{ + *x = gr_font->cwidth; + *y = gr_font->cheight; +} + +int gr_text(int x, int y, const char *s, ...) +{ + return gr_text_impl(x, y, s, 0); +} + +int gr_text_impl(int x, int y, const char *s, int bold) +{ + GGLContext *gl = gr_context; + GRFont *font = gr_font; + unsigned off; + + if (!font->texture) return x; + + bold = bold && (font->texture->height != font->cheight); + + x += overscan_offset_x; + y += overscan_offset_y; + + 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, + (bold ? font->cheight : 0) - y); + gl->recti(gl, x, y, x + font->cwidth, y + font->cheight); + } + x += font->cwidth; + } + + return x; +} + +void gr_texticon(int x, int y, gr_surface icon) { + if (gr_context == NULL || icon == NULL) { + return; + } + GGLContext* gl = gr_context; + + x += overscan_offset_x; + y += overscan_offset_y; + + gl->bindTexture(gl, (GGLSurface*) icon); + 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); + + int w = gr_get_width(icon); + int h = gr_get_height(icon); + + gl->texCoord2i(gl, -x, -y); + gl->recti(gl, x, y, x+gr_get_width(icon), y+gr_get_height(icon)); +} + +void gr_fill(int x1, int y1, int x2, int y2) +{ + x1 += overscan_offset_x; + y1 += overscan_offset_y; + + x2 += overscan_offset_x; + y2 += overscan_offset_y; + + GGLContext *gl = gr_context; + gl->disable(gl, GGL_TEXTURE_2D); + gl->recti(gl, x1, y1, x2, y2); +} + +void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) { + if (gr_context == NULL || source == NULL) { + return; + } + GGLContext *gl = gr_context; + + dx += overscan_offset_x; + dy += overscan_offset_y; + + 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) +{ + gr_font = calloc(sizeof(*gr_font), 1); + + int res = res_create_surface("font", (void**)&(gr_font->texture)); + if (res == 0) { + // The font image should be a 96x2 array of character images. The + // columns are the printable ASCII characters 0x20 - 0x7f. The + // top row is regular text; the bottom row is bold. + gr_font->cwidth = gr_font->texture->width / 96; + gr_font->cheight = gr_font->texture->height / 2; + } else { + printf("failed to read font: res=%d\n", res); + + // fall back to the compiled-in font. + gr_font->texture = malloc(sizeof(*gr_font->texture)); + gr_font->texture->width = font.width; + gr_font->texture->height = font.height; + gr_font->texture->stride = font.width; + + unsigned char* bits = malloc(font.width * font.height); + gr_font->texture->data = (void*) bits; + + unsigned char data; + unsigned char* 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; + } + + // interpret the grayscale as alpha + gr_font->texture->format = GGL_PIXEL_FORMAT_A_8; +} + +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; + if (!has_overlay) + 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); + + gr_fb_blank(true); + gr_fb_blank(false); + + if (!alloc_ion_mem(fi.line_length * vi.yres)) + allocate_overlay(gr_fb_fd, gr_framebuffer); + + return 0; +} + +void gr_exit(void) +{ + free_overlay(gr_fb_fd); + free_ion_mem(); + + 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 - 2*overscan_offset_x; +} + +int gr_fb_height(void) +{ + return gr_framebuffer[0].height - 2*overscan_offset_y; +} + +gr_pixel *gr_fb_data(void) +{ + return (unsigned short *) gr_mem_surface.data; +} + +void gr_fb_blank(bool blank) +{ +#if defined(TW_NO_SCREEN_BLANK) && defined(TW_BRIGHTNESS_PATH) && defined(TW_MAX_BRIGHTNESS) + int fd; + char brightness[4]; + snprintf(brightness, 4, "%03d", TW_MAX_BRIGHTNESS/2); + + fd = open(TW_BRIGHTNESS_PATH, O_RDWR); + if (fd < 0) { + perror("cannot open LCD backlight"); + return; + } + write(fd, blank ? "000" : brightness, 3); + close(fd); +#else + int ret; + if (blank) + free_overlay(gr_fb_fd); + + ret = ioctl(gr_fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK); + if (ret < 0) + perror("ioctl(): blank"); + + if (!blank) + allocate_overlay(gr_fb_fd, gr_framebuffer); +#endif +} + +void gr_get_memory_surface(gr_surface surface) +{ + get_memory_surface( (GGLSurface*) surface); +} + +// These are new graphics functions from 5.0 that were not available in +// 4.4 that are required by charger and healthd +void gr_clear() +{ + return; +} + |