summaryrefslogtreecommitdiffstats
path: root/minui
diff options
context:
space:
mode:
Diffstat (limited to 'minui')
-rw-r--r--minui/Android.mk2
-rw-r--r--minui/graphics.c469
-rw-r--r--minui/graphics.h49
-rw-r--r--minui/graphics_fbdev.c202
-rw-r--r--minui/minui.h57
-rw-r--r--minui/resources.c427
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);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 08:53:06 +0200