auto import from //depot/cupcake/@135843
diff --git a/minui/graphics.c b/minui/graphics.c
new file mode 100644
index 0000000..06c5fdf
--- /dev/null
+++ b/minui/graphics.c
@@ -0,0 +1,312 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <fcntl.h>
+#include <stdio.h>
+
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+
+#include <linux/fb.h>
+#include <linux/kd.h>
+
+#include <pixelflinger/pixelflinger.h>
+
+#include "font_10x18.h"
+#include "minui.h"
+
+typedef struct {
+ GGLSurface texture;
+ unsigned cwidth;
+ unsigned cheight;
+ unsigned ascent;
+} GRFont;
+
+static GRFont *gr_font = 0;
+static GGLContext *gr_context = 0;
+static GGLSurface gr_font_texture;
+static GGLSurface gr_framebuffer[2];
+static GGLSurface gr_mem_surface;
+static unsigned gr_active_fb = 0;
+
+static int gr_fb_fd = -1;
+static int gr_vt_fd = -1;
+
+static struct fb_var_screeninfo vi;
+
+static int get_framebuffer(GGLSurface *fb)
+{
+ int fd;
+ struct fb_fix_screeninfo fi;
+ void *bits;
+
+ fd = open("/dev/graphics/fb0", O_RDWR);
+ if (fd < 0) {
+ perror("cannot open fb0");
+ return -1;
+ }
+
+ if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
+ perror("failed to get fb0 info");
+ close(fd);
+ return -1;
+ }
+
+ if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {
+ perror("failed to get fb0 info");
+ close(fd);
+ return -1;
+ }
+
+ bits = mmap(0, fi.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ if (bits == MAP_FAILED) {
+ perror("failed to mmap framebuffer");
+ close(fd);
+ return -1;
+ }
+
+ fb->version = sizeof(*fb);
+ fb->width = vi.xres;
+ fb->height = vi.yres;
+ fb->stride = vi.xres;
+ fb->data = bits;
+ fb->format = GGL_PIXEL_FORMAT_RGB_565;
+
+ fb++;
+
+ fb->version = sizeof(*fb);
+ fb->width = vi.xres;
+ fb->height = vi.yres;
+ fb->stride = vi.xres;
+ fb->data = (void*) (((unsigned) bits) + vi.yres * vi.xres * 2);
+ fb->format = GGL_PIXEL_FORMAT_RGB_565;
+
+ return fd;
+}
+
+static void get_memory_surface(GGLSurface* ms) {
+ ms->version = sizeof(*ms);
+ ms->width = vi.xres;
+ ms->height = vi.yres;
+ ms->stride = vi.xres;
+ ms->data = malloc(vi.xres * vi.yres * 2);
+ ms->format = GGL_PIXEL_FORMAT_RGB_565;
+}
+
+static void set_active_framebuffer(unsigned n)
+{
+ if (n > 1) return;
+ vi.yres_virtual = vi.yres * 2;
+ vi.yoffset = n * vi.yres;
+ if (ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
+ perror("active fb swap failed");
+ }
+}
+
+void gr_flip(void)
+{
+ GGLContext *gl = gr_context;
+
+ /* swap front and back buffers */
+ gr_active_fb = (gr_active_fb + 1) & 1;
+
+ /* copy data from the in-memory surface to the buffer we're about
+ * to make active. */
+ memcpy(gr_framebuffer[gr_active_fb].data, gr_mem_surface.data,
+ vi.xres * vi.yres * 2);
+
+ /* inform the display driver */
+ set_active_framebuffer(gr_active_fb);
+}
+
+void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
+{
+ GGLContext *gl = gr_context;
+ GGLint color[4];
+ color[0] = ((r << 8) | r) + 1;
+ color[1] = ((g << 8) | g) + 1;
+ color[2] = ((b << 8) | b) + 1;
+ color[3] = ((a << 8) | a) + 1;
+ gl->color4xv(gl, color);
+}
+
+int gr_measure(const char *s)
+{
+ return gr_font->cwidth * strlen(s);
+}
+
+int gr_text(int x, int y, const char *s)
+{
+ GGLContext *gl = gr_context;
+ GRFont *font = gr_font;
+ unsigned off;
+
+ y -= font->ascent;
+
+ gl->bindTexture(gl, &font->texture);
+ gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);
+ gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+ gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+ gl->enable(gl, GGL_TEXTURE_2D);
+
+ while((off = *s++)) {
+ off -= 32;
+ if (off < 96) {
+ gl->texCoord2i(gl, (off * font->cwidth) - x, 0 - y);
+ gl->recti(gl, x, y, x + font->cwidth, y + font->cheight);
+ }
+ x += font->cwidth;
+ }
+
+ return x;
+}
+
+void gr_fill(int x, int y, int w, int h)
+{
+ GGLContext *gl = gr_context;
+ gl->disable(gl, GGL_TEXTURE_2D);
+ gl->recti(gl, x, y, w, h);
+}
+
+void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) {
+ if (gr_context == NULL) {
+ return;
+ }
+ GGLContext *gl = gr_context;
+
+ gl->bindTexture(gl, (GGLSurface*) source);
+ gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);
+ gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+ gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE);
+ gl->enable(gl, GGL_TEXTURE_2D);
+ gl->texCoord2i(gl, sx - dx, sy - dy);
+ gl->recti(gl, dx, dy, dx + w, dy + h);
+}
+
+unsigned int gr_get_width(gr_surface surface) {
+ if (surface == NULL) {
+ return 0;
+ }
+ return ((GGLSurface*) surface)->width;
+}
+
+unsigned int gr_get_height(gr_surface surface) {
+ if (surface == NULL) {
+ return 0;
+ }
+ return ((GGLSurface*) surface)->height;
+}
+
+static void gr_init_font(void)
+{
+ GGLSurface *ftex;
+ unsigned char *bits, *rle;
+ unsigned char *in, data;
+
+ gr_font = calloc(sizeof(*gr_font), 1);
+ ftex = &gr_font->texture;
+
+ bits = malloc(font.width * font.height);
+
+ ftex->version = sizeof(*ftex);
+ ftex->width = font.width;
+ ftex->height = font.height;
+ ftex->stride = font.width;
+ ftex->data = (void*) bits;
+ ftex->format = GGL_PIXEL_FORMAT_A_8;
+
+ in = font.rundata;
+ while((data = *in++)) {
+ memset(bits, (data & 0x80) ? 255 : 0, data & 0x7f);
+ bits += (data & 0x7f);
+ }
+
+ gr_font->cwidth = font.cwidth;
+ gr_font->cheight = font.cheight;
+ gr_font->ascent = font.cheight - 2;
+}
+
+int gr_init(void)
+{
+ gglInit(&gr_context);
+ GGLContext *gl = gr_context;
+
+ gr_init_font();
+ gr_vt_fd = open("/dev/tty0", O_RDWR | O_SYNC);
+ if (gr_vt_fd < 0) {
+ // This is non-fatal; post-Cupcake kernels don't have tty0.
+ perror("can't open /dev/tty0");
+ } else if (ioctl(gr_vt_fd, KDSETMODE, (void*) KD_GRAPHICS)) {
+ // However, if we do open tty0, we expect the ioctl to work.
+ perror("failed KDSETMODE to KD_GRAPHICS on tty0");
+ gr_exit();
+ return -1;
+ }
+
+ gr_fb_fd = get_framebuffer(gr_framebuffer);
+ if (gr_fb_fd < 0) {
+ gr_exit();
+ return -1;
+ }
+
+ get_memory_surface(&gr_mem_surface);
+
+ fprintf(stderr, "framebuffer: fd %d (%d x %d)\n",
+ gr_fb_fd, gr_framebuffer[0].width, gr_framebuffer[0].height);
+
+ /* start with 0 as front (displayed) and 1 as back (drawing) */
+ gr_active_fb = 0;
+ set_active_framebuffer(0);
+ gl->colorBuffer(gl, &gr_mem_surface);
+
+
+ gl->activeTexture(gl, 0);
+ gl->enable(gl, GGL_BLEND);
+ gl->blendFunc(gl, GGL_SRC_ALPHA, GGL_ONE_MINUS_SRC_ALPHA);
+
+ return 0;
+}
+
+void gr_exit(void)
+{
+ close(gr_fb_fd);
+ gr_fb_fd = -1;
+
+ free(gr_mem_surface.data);
+
+ ioctl(gr_vt_fd, KDSETMODE, (void*) KD_TEXT);
+ close(gr_vt_fd);
+ gr_vt_fd = -1;
+}
+
+int gr_fb_width(void)
+{
+ return gr_framebuffer[0].width;
+}
+
+int gr_fb_height(void)
+{
+ return gr_framebuffer[0].height;
+}
+
+gr_pixel *gr_fb_data(void)
+{
+ return (unsigned short *) gr_mem_surface.data;
+}