diff options
Diffstat (limited to 'minui')
-rw-r--r-- | minui/Android.mk | 2 | ||||
-rw-r--r-- | minui/graphics.c | 469 | ||||
-rw-r--r-- | minui/graphics.h | 49 | ||||
-rw-r--r-- | minui/graphics_fbdev.c | 202 | ||||
-rw-r--r-- | minui/minui.h | 57 | ||||
-rw-r--r-- | minui/resources.c | 427 |
6 files changed, 793 insertions, 413 deletions
diff --git a/minui/Android.mk b/minui/Android.mk index 43e0ad33b..5cc84ac7a 100644 --- a/minui/Android.mk +++ b/minui/Android.mk @@ -1,7 +1,7 @@ LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) -LOCAL_SRC_FILES := graphics.c events.c resources.c +LOCAL_SRC_FILES := graphics.c graphics_fbdev.c events.c resources.c LOCAL_C_INCLUDES +=\ external/libpng\ diff --git a/minui/graphics.c b/minui/graphics.c index d75716531..32b3361e3 100644 --- a/minui/graphics.c +++ b/minui/graphics.c @@ -28,188 +28,37 @@ #include <linux/fb.h> #include <linux/kd.h> -#include <pixelflinger/pixelflinger.h> +#include <time.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 - -#define NUM_BUFFERS 2 +#include "graphics.h" typedef struct { - GGLSurface* texture; - unsigned cwidth; - unsigned cheight; + GRSurface* texture; + int cwidth; + int 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 GRFont* gr_font = NULL; +static minui_backend* gr_backend = NULL; + 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 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_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; - } - - 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->data = bits; - fb->format = PIXEL_FORMAT; - memset(fb->data, 0, vi.yres * fi.line_length); - - fb++; +static unsigned char gr_current_r = 255; +static unsigned char gr_current_g = 255; +static unsigned char gr_current_b = 255; +static unsigned char gr_current_a = 255; - /* check if we can use double buffering */ - if (vi.yres * fi.line_length * 2 > fi.smem_len) - return fd; +static GRSurface* gr_draw = NULL; - double_buffering = 1; - - 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 || !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) -{ - 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) +static bool outside(int x, int y) { - 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); + return x < 0 || x >= gr_draw->width || y < 0 || y >= gr_draw->height; } int gr_measure(const char *s) @@ -223,58 +72,118 @@ void gr_font_size(int *x, int *y) *y = gr_font->cheight; } -int gr_text(int x, int y, const char *s, int bold) +static void text_blend(unsigned char* src_p, int src_row_bytes, + unsigned char* dst_p, int dst_row_bytes, + int width, int height) +{ + int i, j; + for (j = 0; j < height; ++j) { + unsigned char* sx = src_p; + unsigned char* px = dst_p; + for (i = 0; i < width; ++i) { + unsigned char a = *sx++; + if (gr_current_a < 255) a = ((int)a * gr_current_a) / 255; + if (a == 255) { + *px++ = gr_current_r; + *px++ = gr_current_g; + *px++ = gr_current_b; + px++; + } else if (a > 0) { + *px = (*px * (255-a) + gr_current_r * a) / 255; + ++px; + *px = (*px * (255-a) + gr_current_g * a) / 255; + ++px; + *px = (*px * (255-a) + gr_current_b * a) / 255; + ++px; + ++px; + } else { + px += 4; + } + } + src_p += src_row_bytes; + dst_p += dst_row_bytes; + } +} + + +void gr_text(int x, int y, const char *s, int bold) { - GGLContext *gl = gr_context; GRFont *font = gr_font; unsigned off; - if (!font->texture) return x; + if (!font->texture) return; + if (gr_current_a == 0) return; 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 (outside(x, y) || outside(x+font->cwidth-1, y+font->cheight-1)) break; 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); + + unsigned char* src_p = font->texture->data + (off * font->cwidth) + + (bold ? font->cheight * font->texture->row_bytes : 0); + unsigned char* dst_p = gr_draw->data + y*gr_draw->row_bytes + x*gr_draw->pixel_bytes; + + text_blend(src_p, font->texture->row_bytes, + dst_p, gr_draw->row_bytes, + font->cwidth, font->cheight); + } x += font->cwidth; } - - return x; } -void gr_texticon(int x, int y, gr_surface icon) { - if (gr_context == NULL || icon == NULL) { +void gr_texticon(int x, int y, GRSurface* icon) { + if (icon == NULL) return; + + if (icon->pixel_bytes != 1) { + printf("gr_texticon: source has wrong format\n"); 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); + if (outside(x, y) || outside(x+icon->width-1, y+icon->height-1)) return; - int w = gr_get_width(icon); - int h = gr_get_height(icon); + unsigned char* src_p = icon->data; + unsigned char* dst_p = gr_draw->data + y*gr_draw->row_bytes + x*gr_draw->pixel_bytes; - gl->texCoord2i(gl, -x, -y); - gl->recti(gl, x, y, x+gr_get_width(icon), y+gr_get_height(icon)); + text_blend(src_p, icon->row_bytes, + dst_p, gr_draw->row_bytes, + icon->width, icon->height); +} + +void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + gr_current_r = r; + gr_current_g = g; + gr_current_b = b; + gr_current_a = a; +} + +void gr_clear() +{ + if (gr_current_r == gr_current_g && + gr_current_r == gr_current_b) { + memset(gr_draw->data, gr_current_r, gr_draw->height * gr_draw->row_bytes); + } else { + int x, y; + unsigned char* px = gr_draw->data; + for (y = 0; y < gr_draw->height; ++y) { + for (x = 0; x < gr_draw->width; ++x) { + *px++ = gr_current_r; + *px++ = gr_current_g; + *px++ = gr_current_b; + px++; + } + px += gr_draw->row_bytes - (gr_draw->width * gr_draw->pixel_bytes); + } + } } void gr_fill(int x1, int y1, int x2, int y2) @@ -285,48 +194,82 @@ void gr_fill(int x1, int y1, int x2, int y2) 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); + if (outside(x1, y1) || outside(x2-1, y2-1)) return; + + unsigned char* p = gr_draw->data + y1 * gr_draw->row_bytes + x1 * gr_draw->pixel_bytes; + if (gr_current_a == 255) { + int x, y; + for (y = y1; y < y2; ++y) { + unsigned char* px = p; + for (x = x1; x < x2; ++x) { + *px++ = gr_current_r; + *px++ = gr_current_g; + *px++ = gr_current_b; + px++; + } + p += gr_draw->row_bytes; + } + } else if (gr_current_a > 0) { + int x, y; + for (y = y1; y < y2; ++y) { + unsigned char* px = p; + for (x = x1; x < x2; ++x) { + *px = (*px * (255-gr_current_a) + gr_current_r * gr_current_a) / 255; + ++px; + *px = (*px * (255-gr_current_a) + gr_current_g * gr_current_a) / 255; + ++px; + *px = (*px * (255-gr_current_a) + gr_current_b * gr_current_a) / 255; + ++px; + ++px; + } + p += gr_draw->row_bytes; + } + } } -void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) { - if (gr_context == NULL || source == NULL) { +void gr_blit(GRSurface* source, int sx, int sy, int w, int h, int dx, int dy) { + if (source == NULL) return; + + if (gr_draw->pixel_bytes != source->pixel_bytes) { + printf("gr_blit: source has wrong format\n"); 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); + if (outside(dx, dy) || outside(dx+w-1, dy+h-1)) return; + + unsigned char* src_p = source->data + sy*source->row_bytes + sx*source->pixel_bytes; + unsigned char* dst_p = gr_draw->data + dy*gr_draw->row_bytes + dx*gr_draw->pixel_bytes; + + int i; + for (i = 0; i < h; ++i) { + memcpy(dst_p, src_p, w * source->pixel_bytes); + src_p += source->row_bytes; + dst_p += gr_draw->row_bytes; + } } -unsigned int gr_get_width(gr_surface surface) { +unsigned int gr_get_width(GRSurface* surface) { if (surface == NULL) { return 0; } - return ((GGLSurface*) surface)->width; + return surface->width; } -unsigned int gr_get_height(gr_surface surface) { +unsigned int gr_get_height(GRSurface* surface) { if (surface == NULL) { return 0; } - return ((GGLSurface*) surface)->height; + return 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)); + int res = res_create_alpha_surface("font", &(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 @@ -340,7 +283,8 @@ static void gr_init_font(void) 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; + gr_font->texture->row_bytes = font.width; + gr_font->texture->pixel_bytes = 1; unsigned char* bits = malloc(font.width * font.height); gr_font->texture->data = (void*) bits; @@ -355,17 +299,65 @@ static void gr_init_font(void) gr_font->cwidth = font.cwidth; gr_font->cheight = font.cheight; } +} - // interpret the grayscale as alpha - gr_font->texture->format = GGL_PIXEL_FORMAT_A_8; +#if 0 +// Exercises many of the gr_*() functions; useful for testing. +static void gr_test() { + GRSurface** images; + int frames; + int result = res_create_multi_surface("icon_installing", &frames, &images); + if (result < 0) { + printf("create surface %d\n", result); + gr_exit(); + return; + } + + time_t start = time(NULL); + int x; + for (x = 0; x <= 1200; ++x) { + if (x < 400) { + gr_color(0, 0, 0, 255); + } else { + gr_color(0, (x-400)%128, 0, 255); + } + gr_clear(); + + gr_color(255, 0, 0, 255); + gr_surface frame = images[x%frames]; + gr_blit(frame, 0, 0, frame->width, frame->height, x, 0); + + gr_color(255, 0, 0, 128); + gr_fill(400, 150, 600, 350); + + gr_color(255, 255, 255, 255); + gr_text(500, 225, "hello, world!", 0); + gr_color(255, 255, 0, 128); + gr_text(300+x, 275, "pack my box with five dozen liquor jugs", 1); + + gr_color(0, 0, 255, 128); + gr_fill(gr_draw->width - 200 - x, 300, gr_draw->width - x, 500); + + gr_draw = gr_backend->flip(gr_backend); + } + printf("getting end time\n"); + time_t end = time(NULL); + printf("got end time\n"); + printf("start %ld end %ld\n", (long)start, (long)end); + if (end > start) { + printf("%.2f fps\n", ((double)x) / (end-start)); + } +} +#endif + +void gr_flip() { + gr_draw = gr_backend->flip(gr_backend); } 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. @@ -377,38 +369,24 @@ int gr_init(void) return -1; } - gr_fb_fd = get_framebuffer(gr_framebuffer); - if (gr_fb_fd < 0) { - gr_exit(); + gr_backend = open_fbdev(); + gr_draw = gr_backend->init(gr_backend); + if (gr_draw == NULL) { return -1; } - get_memory_surface(&gr_mem_surface); - - printf("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); + overscan_offset_x = gr_draw->width * overscan_percent / 100; + overscan_offset_y = gr_draw->height * overscan_percent / 100; - 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); + gr_flip(); + gr_flip(); return 0; } void gr_exit(void) { - close(gr_fb_fd); - gr_fb_fd = -1; - - free(gr_mem_surface.data); + gr_backend->exit(gr_backend); ioctl(gr_vt_fd, KDSETMODE, (void*) KD_TEXT); close(gr_vt_fd); @@ -417,24 +395,15 @@ void gr_exit(void) int gr_fb_width(void) { - return gr_framebuffer[0].width - 2*overscan_offset_x; + return gr_draw->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; + return gr_draw->height - 2*overscan_offset_y; } void gr_fb_blank(bool blank) { - int ret; - - ret = ioctl(gr_fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK); - if (ret < 0) - perror("ioctl(): blank"); + gr_backend->blank(gr_backend, blank); } diff --git a/minui/graphics.h b/minui/graphics.h new file mode 100644 index 000000000..94b89a554 --- /dev/null +++ b/minui/graphics.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2014 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. + */ + +#ifndef _GRAPHICS_H_ +#define _GRAPHICS_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include <stdbool.h> +#include "minui.h" + +typedef struct minui_backend { + // Initializes the backend and returns a gr_surface to draw into. + gr_surface (*init)(struct minui_backend*); + + // Causes the current drawing surface (returned by the most recent + // call to flip() or init()) to be displayed, and returns a new + // drawing surface. + gr_surface (*flip)(struct minui_backend*); + + // Blank (or unblank) the screen. + void (*blank)(struct minui_backend*, bool); + + // Device cleanup when drawing is done. + void (*exit)(struct minui_backend*); +} minui_backend; + +minui_backend* open_fbdev(); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/minui/graphics_fbdev.c b/minui/graphics_fbdev.c new file mode 100644 index 000000000..bb91975a9 --- /dev/null +++ b/minui/graphics_fbdev.c @@ -0,0 +1,202 @@ +/* + * Copyright (C) 2014 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 <fcntl.h> +#include <stdio.h> + +#include <sys/cdefs.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/types.h> + +#include <linux/fb.h> +#include <linux/kd.h> + +#include "minui.h" +#include "graphics.h" + +static gr_surface fbdev_init(minui_backend*); +static gr_surface fbdev_flip(minui_backend*); +static void fbdev_blank(minui_backend*, bool); +static void fbdev_exit(minui_backend*); + +static GRSurface gr_framebuffer[2]; +static bool double_buffered; +static GRSurface* gr_draw = NULL; +static int displayed_buffer; + +static struct fb_var_screeninfo vi; +static int fb_fd = -1; + +static minui_backend my_backend = { + .init = fbdev_init, + .flip = fbdev_flip, + .blank = fbdev_blank, + .exit = fbdev_exit, +}; + +minui_backend* open_fbdev() { + return &my_backend; +} + +static void fbdev_blank(minui_backend* backend __unused, bool blank) +{ + int ret; + + ret = ioctl(fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK); + if (ret < 0) + perror("ioctl(): blank"); +} + +static void set_displayed_framebuffer(unsigned n) +{ + if (n > 1 || !double_buffered) return; + + vi.yres_virtual = gr_framebuffer[0].height * 2; + vi.yoffset = n * gr_framebuffer[0].height; + vi.bits_per_pixel = gr_framebuffer[0].pixel_bytes * 8; + if (ioctl(fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) { + perror("active fb swap failed"); + } + displayed_buffer = n; +} + +static gr_surface fbdev_init(minui_backend* backend) { + int fd; + void *bits; + + struct fb_fix_screeninfo fi; + + fd = open("/dev/graphics/fb0", O_RDWR); + if (fd < 0) { + perror("cannot open fb0"); + return NULL; + } + + if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) { + perror("failed to get fb0 info"); + close(fd); + return NULL; + } + + if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) { + perror("failed to get fb0 info"); + close(fd); + return NULL; + } + + // We print this out for informational purposes only, but + // throughout we assume that the framebuffer device uses an RGBX + // pixel format. This is the case for every development device I + // have access to. For some of those devices (eg, hammerhead aka + // Nexus 5), FBIOGET_VSCREENINFO *reports* that it wants a + // different format (XBGR) but actually produces the correct + // results on the display when you write RGBX. + // + // If you have a device that actually *needs* another pixel format + // (ie, BGRX, or 565), patches welcome... + + printf("fb0 reports (possibly inaccurate):\n" + " vi.bits_per_pixel = %d\n" + " vi.red.offset = %3d .length = %3d\n" + " vi.green.offset = %3d .length = %3d\n" + " vi.blue.offset = %3d .length = %3d\n", + vi.bits_per_pixel, + vi.red.offset, vi.red.length, + vi.green.offset, vi.green.length, + vi.blue.offset, vi.blue.length); + + 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 NULL; + } + + gr_framebuffer[0].width = vi.xres; + gr_framebuffer[0].height = vi.yres; + gr_framebuffer[0].row_bytes = fi.line_length; + gr_framebuffer[0].pixel_bytes = vi.bits_per_pixel / 8; + gr_framebuffer[0].data = bits; + memset(gr_framebuffer[0].data, 0, gr_framebuffer[0].height * gr_framebuffer[0].row_bytes); + + /* check if we can use double buffering */ + if (vi.yres * fi.line_length * 2 <= fi.smem_len) { + double_buffered = true; + + memcpy(gr_framebuffer+1, gr_framebuffer, sizeof(GRSurface)); + gr_framebuffer[1].data = gr_framebuffer[0].data + + gr_framebuffer[0].height * gr_framebuffer[0].row_bytes; + + gr_draw = gr_framebuffer+1; + + } else { + double_buffered = false; + + // Without double-buffering, we allocate RAM for a buffer to + // draw in, and then "flipping" the buffer consists of a + // memcpy from the buffer we allocated to the framebuffer. + + gr_draw = (GRSurface*) malloc(sizeof(GRSurface)); + memcpy(gr_draw, gr_framebuffer, sizeof(GRSurface)); + gr_draw->data = (unsigned char*) malloc(gr_draw->height * gr_draw->row_bytes); + if (!gr_draw->data) { + perror("failed to allocate in-memory surface"); + return NULL; + } + } + + memset(gr_draw->data, 0, gr_draw->height * gr_draw->row_bytes); + fb_fd = fd; + set_displayed_framebuffer(0); + + printf("framebuffer: %d (%d x %d)\n", fb_fd, gr_draw->width, gr_draw->height); + + fbdev_blank(backend, true); + fbdev_blank(backend, false); + + return gr_draw; +} + +static gr_surface fbdev_flip(minui_backend* backend __unused) { + if (double_buffered) { + // Change gr_draw to point to the buffer currently displayed, + // then flip the driver so we're displaying the other buffer + // instead. + gr_draw = gr_framebuffer + displayed_buffer; + set_displayed_framebuffer(1-displayed_buffer); + } else { + // Copy from the in-memory surface to the framebuffer. + memcpy(gr_framebuffer[0].data, gr_draw->data, + gr_draw->height * gr_draw->row_bytes); + } + return gr_draw; +} + +static void fbdev_exit(minui_backend* backend __unused) { + close(fb_fd); + fb_fd = -1; + + if (!double_buffered && gr_draw) { + free(gr_draw->data); + free(gr_draw); + } + gr_draw = NULL; +} diff --git a/minui/minui.h b/minui/minui.h index 1b8dd059b..d8d53fa27 100644 --- a/minui/minui.h +++ b/minui/minui.h @@ -17,28 +17,38 @@ #ifndef _MINUI_H_ #define _MINUI_H_ +#include <sys/types.h> + #include <stdbool.h> #ifdef __cplusplus extern "C" { #endif -typedef void* gr_surface; -typedef unsigned short gr_pixel; +typedef struct { + int width; + int height; + int row_bytes; + int pixel_bytes; + unsigned char* data; +} GRSurface; + +typedef GRSurface* gr_surface; int gr_init(void); void gr_exit(void); int gr_fb_width(void); int gr_fb_height(void); -gr_pixel *gr_fb_data(void); + void gr_flip(void); void gr_fb_blank(bool blank); +void gr_clear(); // clear entire surface to current color void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a); void gr_fill(int x1, int y1, int x2, int y2); -int gr_text(int x, int y, const char *s, int bold); - void gr_texticon(int x, int y, gr_surface icon); +void gr_text(int x, int y, const char *s, int bold); +void gr_texticon(int x, int y, gr_surface icon); int gr_measure(const char *s); void gr_font_size(int *x, int *y); @@ -70,9 +80,40 @@ void ev_dispatch(void); // Resources -// Returns 0 if no error, else negative. -int res_create_surface(const char* name, gr_surface* pSurface); -int res_create_localized_surface(const char* name, gr_surface* pSurface); +// res_create_*_surface() functions return 0 if no error, else +// negative. +// +// A "display" surface is one that is intended to be drawn to the +// screen with gr_blit(). An "alpha" surface is a grayscale image +// interpreted as an alpha mask used to render text in the current +// color (with gr_text() or gr_texticon()). +// +// All these functions load PNG images from "/res/images/${name}.png". + +// Load a single display surface from a PNG image. +int res_create_display_surface(const char* name, gr_surface* pSurface); + +// Load an array of display surfaces from a single PNG image. The PNG +// should have a 'Frames' text chunk whose value is the number of +// frames this image represents. The pixel data itself is interlaced +// by row. +int res_create_multi_display_surface(const char* name, + int* frames, gr_surface** pSurface); + +// Load a single alpha surface from a grayscale PNG image. +int res_create_alpha_surface(const char* name, gr_surface* pSurface); + +// Load part of a grayscale PNG image that is the first match for the +// given locale. The image is expected to be a composite of multiple +// translations of the same text, with special added rows that encode +// the subimages' size and intended locale in the pixel data. See +// development/tools/recovery_l10n for an app that will generate these +// specialized images from Android resources. +int res_create_localized_alpha_surface(const char* name, const char* locale, + gr_surface* pSurface); + +// Free a surface allocated by any of the res_create_*_surface() +// functions. void res_free_surface(gr_surface surface); #ifdef __cplusplus diff --git a/minui/resources.c b/minui/resources.c index c0a9ccacb..2bae4ded0 100644 --- a/minui/resources.c +++ b/minui/resources.c @@ -27,31 +27,28 @@ #include <linux/fb.h> #include <linux/kd.h> -#include <pixelflinger/pixelflinger.h> - #include <png.h> #include "minui.h" extern char* locale; -// libpng gives "undefined reference to 'pow'" errors, and I have no -// idea how to convince the build system to link with -lm. We don't -// need this functionality (it's used for gamma adjustment) so provide -// a dummy implementation to satisfy the linker. -double pow(double x, double y) { - return x * y; +#define SURFACE_DATA_ALIGNMENT 8 + +static gr_surface malloc_surface(size_t data_size) { + unsigned char* temp = malloc(sizeof(GRSurface) + data_size + SURFACE_DATA_ALIGNMENT); + if (temp == NULL) return NULL; + gr_surface surface = (gr_surface) temp; + surface->data = temp + sizeof(GRSurface) + + (SURFACE_DATA_ALIGNMENT - (sizeof(GRSurface) % SURFACE_DATA_ALIGNMENT)); + return surface; } -int res_create_surface(const char* name, gr_surface* pSurface) { +static int open_png(const char* name, png_structp* png_ptr, png_infop* info_ptr, + png_uint_32* width, png_uint_32* height, png_byte* channels) { char resPath[256]; - GGLSurface* surface = NULL; - int result = 0; unsigned char header[8]; - png_structp png_ptr = NULL; - png_infop info_ptr = NULL; - - *pSurface = NULL; + int result = 0; snprintf(resPath, sizeof(resPath)-1, "/res/images/%s.png", name); resPath[sizeof(resPath)-1] = '\0'; @@ -72,116 +69,286 @@ int res_create_surface(const char* name, gr_surface* pSurface) { goto exit; } - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (!png_ptr) { + *png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); + if (!*png_ptr) { result = -4; goto exit; } - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) { + *info_ptr = png_create_info_struct(*png_ptr); + if (!*info_ptr) { result = -5; goto exit; } - if (setjmp(png_jmpbuf(png_ptr))) { + if (setjmp(png_jmpbuf(*png_ptr))) { result = -6; goto exit; } - png_init_io(png_ptr, fp); - png_set_sig_bytes(png_ptr, sizeof(header)); - png_read_info(png_ptr, info_ptr); + png_init_io(*png_ptr, fp); + png_set_sig_bytes(*png_ptr, sizeof(header)); + png_read_info(*png_ptr, *info_ptr); int color_type, bit_depth; - size_t width, height; - png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, + png_get_IHDR(*png_ptr, *info_ptr, width, height, &bit_depth, &color_type, NULL, NULL, NULL); - int channels = png_get_channels(png_ptr, info_ptr); - - if (!(bit_depth == 8 && - ((channels == 3 && color_type == PNG_COLOR_TYPE_RGB) || - (channels == 4 && color_type == PNG_COLOR_TYPE_RGBA) || - (channels == 1 && (color_type == PNG_COLOR_TYPE_PALETTE || - color_type == PNG_COLOR_TYPE_GRAY))))) { - return -7; + *channels = png_get_channels(*png_ptr, *info_ptr); + + if (bit_depth == 8 && *channels == 3 && color_type == PNG_COLOR_TYPE_RGB) { + // 8-bit RGB images: great, nothing to do. + } else if (bit_depth <= 8 && *channels == 1 && color_type == PNG_COLOR_TYPE_GRAY) { + // 1-, 2-, 4-, or 8-bit gray images: expand to 8-bit gray. + png_set_expand_gray_1_2_4_to_8(*png_ptr); + } else if (bit_depth <= 8 && *channels == 1 && color_type == PNG_COLOR_TYPE_PALETTE) { + // paletted images: expand to 8-bit RGB. Note that we DON'T + // currently expand the tRNS chunk (if any) to an alpha + // channel, because minui doesn't support alpha channels in + // general. + png_set_palette_to_rgb(*png_ptr); + *channels = 3; + } else { + fprintf(stderr, "minui doesn't support PNG depth %d channels %d color_type %d\n", + bit_depth, *channels, color_type); + result = -7; goto exit; } - size_t stride = (color_type == PNG_COLOR_TYPE_GRAY ? 1 : 4) * width; - size_t pixelSize = stride * height; + return result; - surface = malloc(sizeof(GGLSurface) + pixelSize); - if (surface == NULL) { - result = -8; - goto exit; + exit: + if (result < 0) { + png_destroy_read_struct(png_ptr, info_ptr, NULL); } - unsigned char* pData = (unsigned char*) (surface + 1); - surface->version = sizeof(GGLSurface); + if (fp != NULL) { + fclose(fp); + } + + return result; +} + +// "display" surfaces are transformed into the framebuffer's required +// pixel format (currently only RGBX is supported) at load time, so +// gr_blit() can be nothing more than a memcpy() for each row. The +// next two functions are the only ones that know anything about the +// framebuffer pixel format; they need to be modified if the +// framebuffer format changes (but nothing else should). + +// Allocate and return a gr_surface sufficient for storing an image of +// the indicated size in the framebuffer pixel format. +static gr_surface init_display_surface(png_uint_32 width, png_uint_32 height) { + gr_surface surface; + + surface = malloc_surface(width * height * 4); + if (surface == NULL) return NULL; + surface->width = width; surface->height = height; - surface->stride = width; /* Yes, pixels, not bytes */ - surface->data = pData; - surface->format = (channels == 3) ? GGL_PIXEL_FORMAT_RGBX_8888 : - ((color_type == PNG_COLOR_TYPE_PALETTE ? GGL_PIXEL_FORMAT_RGBA_8888 : GGL_PIXEL_FORMAT_L_8)); - - int alpha = 0; - if (color_type == PNG_COLOR_TYPE_PALETTE) { - png_set_palette_to_rgb(png_ptr); - } - if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) { - png_set_tRNS_to_alpha(png_ptr); - alpha = 1; + surface->row_bytes = width * 4; + surface->pixel_bytes = 4; + + return surface; +} + +// Copy 'input_row' to 'output_row', transforming it to the +// framebuffer pixel format. The input format depends on the value of +// 'channels': +// +// 1 - input is 8-bit grayscale +// 3 - input is 24-bit RGB +// 4 - input is 32-bit RGBA/RGBX +// +// 'width' is the number of pixels in the row. +static void transform_rgb_to_draw(unsigned char* input_row, + unsigned char* output_row, + int channels, int width) { + int x; + unsigned char* ip = input_row; + unsigned char* op = output_row; + + switch (channels) { + case 1: + // expand gray level to RGBX + for (x = 0; x < width; ++x) { + *op++ = *ip; + *op++ = *ip; + *op++ = *ip; + *op++ = 0xff; + ip++; + } + break; + + case 3: + // expand RGBA to RGBX + for (x = 0; x < width; ++x) { + *op++ = *ip++; + *op++ = *ip++; + *op++ = *ip++; + *op++ = 0xff; + } + break; + + case 4: + // copy RGBA to RGBX + memcpy(output_row, input_row, width*4); + break; } - if (color_type == PNG_COLOR_TYPE_GRAY) { - alpha = 1; +} + +int res_create_display_surface(const char* name, gr_surface* pSurface) { + gr_surface surface = NULL; + int result = 0; + png_structp png_ptr = NULL; + png_infop info_ptr = NULL; + png_uint_32 width, height; + png_byte channels; + + *pSurface = NULL; + + result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels); + if (result < 0) return result; + + surface = init_display_surface(width, height); + if (surface == NULL) { + result = -8; + goto exit; } + unsigned char* p_row = malloc(width * 4); unsigned int y; - if (channels == 3 || (channels == 1 && !alpha)) { - for (y = 0; y < height; ++y) { - unsigned char* pRow = pData + y * stride; - png_read_row(png_ptr, pRow, NULL); - - int x; - for(x = width - 1; x >= 0; x--) { - int sx = x * 3; - int dx = x * 4; - unsigned char r = pRow[sx]; - unsigned char g = pRow[sx + 1]; - unsigned char b = pRow[sx + 2]; - unsigned char a = 0xff; - pRow[dx ] = r; // r - pRow[dx + 1] = g; // g - pRow[dx + 2] = b; // b - pRow[dx + 3] = a; + for (y = 0; y < height; ++y) { + png_read_row(png_ptr, p_row, NULL); + transform_rgb_to_draw(p_row, surface->data + y * surface->row_bytes, channels, width); + } + free(p_row); + + *pSurface = surface; + + exit: + png_destroy_read_struct(&png_ptr, &info_ptr, NULL); + if (result < 0 && surface != NULL) free(surface); + return result; +} + +int res_create_multi_display_surface(const char* name, int* frames, gr_surface** pSurface) { + gr_surface* surface = NULL; + int result = 0; + png_structp png_ptr = NULL; + png_infop info_ptr = NULL; + png_uint_32 width, height; + png_byte channels; + int i; + + *pSurface = NULL; + *frames = -1; + + result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels); + if (result < 0) return result; + + *frames = 1; + png_textp text; + int num_text; + if (png_get_text(png_ptr, info_ptr, &text, &num_text)) { + for (i = 0; i < num_text; ++i) { + if (text[i].key && strcmp(text[i].key, "Frames") == 0 && text[i].text) { + *frames = atoi(text[i].text); + break; } } - } else { - for (y = 0; y < height; ++y) { - unsigned char* pRow = pData + y * stride; - png_read_row(png_ptr, pRow, NULL); + printf(" found frames = %d\n", *frames); + } + + if (height % *frames != 0) { + printf("bad height (%d) for frame count (%d)\n", height, *frames); + result = -9; + goto exit; + } + + surface = malloc(*frames * sizeof(gr_surface)); + if (surface == NULL) { + result = -8; + goto exit; + } + for (i = 0; i < *frames; ++i) { + surface[i] = init_display_surface(width, height / *frames); + if (surface[i] == NULL) { + result = -8; + goto exit; } } - *pSurface = (gr_surface) surface; + unsigned char* p_row = malloc(width * 4); + unsigned int y; + for (y = 0; y < height; ++y) { + png_read_row(png_ptr, p_row, NULL); + int frame = y % *frames; + unsigned char* out_row = surface[frame]->data + + (y / *frames) * surface[frame]->row_bytes; + transform_rgb_to_draw(p_row, out_row, channels, width); + } + free(p_row); + + *pSurface = (gr_surface*) surface; exit: png_destroy_read_struct(&png_ptr, &info_ptr, NULL); - if (fp != NULL) { - fclose(fp); - } if (result < 0) { if (surface) { + for (i = 0; i < *frames; ++i) { + if (surface[i]) free(surface[i]); + } free(surface); } } return result; } -static int matches_locale(const char* loc) { +int res_create_alpha_surface(const char* name, gr_surface* pSurface) { + gr_surface surface = NULL; + int result = 0; + png_structp png_ptr = NULL; + png_infop info_ptr = NULL; + png_uint_32 width, height; + png_byte channels; + + *pSurface = NULL; + + result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels); + if (result < 0) return result; + + if (channels != 1) { + result = -7; + goto exit; + } + + surface = malloc_surface(width * height); + if (surface == NULL) { + result = -8; + goto exit; + } + surface->width = width; + surface->height = height; + surface->row_bytes = width; + surface->pixel_bytes = 1; + + unsigned char* p_row; + unsigned int y; + for (y = 0; y < height; ++y) { + p_row = surface->data + y * surface->row_bytes; + png_read_row(png_ptr, p_row, NULL); + } + + *pSurface = surface; + + exit: + png_destroy_read_struct(&png_ptr, &info_ptr, NULL); + if (result < 0 && surface != NULL) free(surface); + return result; +} + +static int matches_locale(const char* loc, const char* locale) { if (locale == NULL) return 0; if (strcmp(loc, locale) == 0) return 1; @@ -198,98 +365,61 @@ static int matches_locale(const char* loc) { return (strncmp(locale, loc, i) == 0 && locale[i] == '_'); } -int res_create_localized_surface(const char* name, gr_surface* pSurface) { - char resPath[256]; - GGLSurface* surface = NULL; +int res_create_localized_alpha_surface(const char* name, + const char* locale, + gr_surface* pSurface) { + gr_surface surface = NULL; int result = 0; - unsigned char header[8]; png_structp png_ptr = NULL; png_infop info_ptr = NULL; + png_uint_32 width, height; + png_byte channels; *pSurface = NULL; - snprintf(resPath, sizeof(resPath)-1, "/res/images/%s.png", name); - resPath[sizeof(resPath)-1] = '\0'; - FILE* fp = fopen(resPath, "rb"); - if (fp == NULL) { - result = -1; + if (locale == NULL) { + surface = malloc_surface(0); + surface->width = 0; + surface->height = 0; + surface->row_bytes = 0; + surface->pixel_bytes = 1; goto exit; } - size_t bytesRead = fread(header, 1, sizeof(header), fp); - if (bytesRead != sizeof(header)) { - result = -2; - goto exit; - } - - if (png_sig_cmp(header, 0, sizeof(header))) { - result = -3; - goto exit; - } + result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels); + if (result < 0) return result; - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (!png_ptr) { - result = -4; - goto exit; - } - - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) { - result = -5; - goto exit; - } - - if (setjmp(png_jmpbuf(png_ptr))) { - result = -6; - goto exit; - } - - png_init_io(png_ptr, fp); - png_set_sig_bytes(png_ptr, sizeof(header)); - png_read_info(png_ptr, info_ptr); - - int color_type, bit_depth; - size_t width, height; - png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, - &color_type, NULL, NULL, NULL); - int channels = png_get_channels(png_ptr, info_ptr); - - if (!(bit_depth == 8 && - (channels == 1 && color_type == PNG_COLOR_TYPE_GRAY))) { - return -7; + if (channels != 1) { + result = -7; goto exit; } unsigned char* row = malloc(width); - int y; + png_uint_32 y; for (y = 0; y < height; ++y) { png_read_row(png_ptr, row, NULL); int w = (row[1] << 8) | row[0]; int h = (row[3] << 8) | row[2]; int len = row[4]; - char* loc = row+5; + char* loc = (char*)row+5; - if (y+1+h >= height || matches_locale(loc)) { + if (y+1+h >= height || matches_locale(loc, locale)) { printf(" %20s: %s (%d x %d @ %d)\n", name, loc, w, h, y); - surface = malloc(sizeof(GGLSurface)); + surface = malloc_surface(w*h); if (surface == NULL) { result = -8; goto exit; } - unsigned char* pData = malloc(w*h); - - surface->version = sizeof(GGLSurface); surface->width = w; surface->height = h; - surface->stride = w; /* Yes, pixels, not bytes */ - surface->data = pData; - surface->format = GGL_PIXEL_FORMAT_A_8; + surface->row_bytes = w; + surface->pixel_bytes = 1; int i; for (i = 0; i < h; ++i, ++y) { png_read_row(png_ptr, row, NULL); - memcpy(pData + i*w, row, w); + memcpy(surface->data + i*w, row, w); } *pSurface = (gr_surface) surface; @@ -304,21 +434,10 @@ int res_create_localized_surface(const char* name, gr_surface* pSurface) { exit: png_destroy_read_struct(&png_ptr, &info_ptr, NULL); - - if (fp != NULL) { - fclose(fp); - } - if (result < 0) { - if (surface) { - free(surface); - } - } + if (result < 0 && surface != NULL) free(surface); return result; } void res_free_surface(gr_surface surface) { - GGLSurface* pSurface = (GGLSurface*) surface; - if (pSurface) { - free(pSurface); - } + free(surface); } |