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-rw-r--r--minuitwrp/graphics.c716
1 files changed, 716 insertions, 0 deletions
diff --git a/minuitwrp/graphics.c b/minuitwrp/graphics.c
new file mode 100644
index 000000000..939f098d1
--- /dev/null
+++ b/minuitwrp/graphics.c
@@ -0,0 +1,716 @@
+/*
+ * 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 <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 "minui.h"
+
+#ifdef BOARD_USE_CUSTOM_RECOVERY_FONT
+#include BOARD_USE_CUSTOM_RECOVERY_FONT
+#else
+#include "font_10x18.h"
+#endif
+
+#ifdef RECOVERY_BGRA
+#define PIXEL_FORMAT GGL_PIXEL_FORMAT_BGRA_8888
+#define PIXEL_SIZE 4
+#endif
+#ifdef RECOVERY_RGBX
+#define PIXEL_FORMAT GGL_PIXEL_FORMAT_RGBX_8888
+#define PIXEL_SIZE 4
+#endif
+#ifndef PIXEL_FORMAT
+#define PIXEL_FORMAT GGL_PIXEL_FORMAT_RGB_565
+#define PIXEL_SIZE 2
+#endif
+
+// #define PRINT_SCREENINFO 1 // Enables printing of screen info to log
+
+typedef struct {
+ GGLSurface texture;
+ unsigned offset[97];
+ unsigned cheight;
+ unsigned ascent;
+} GRFont;
+
+static GRFont *gr_font = 0;
+static GGLContext *gr_context = 0;
+static GGLSurface gr_font_texture;
+static GGLSurface gr_framebuffer[2];
+static GGLSurface gr_mem_surface;
+static unsigned gr_active_fb = 0;
+
+static int gr_fb_fd = -1;
+static int gr_vt_fd = -1;
+
+static struct fb_var_screeninfo vi;
+static struct fb_fix_screeninfo fi;
+
+#ifdef PRINT_SCREENINFO
+static void print_fb_var_screeninfo()
+{
+ LOGI("vi.xres: %d\n", vi.xres);
+ LOGI("vi.yres: %d\n", vi.yres);
+ LOGI("vi.xres_virtual: %d\n", vi.xres_virtual);
+ LOGI("vi.yres_virtual: %d\n", vi.yres_virtual);
+ LOGI("vi.xoffset: %d\n", vi.xoffset);
+ LOGI("vi.yoffset: %d\n", vi.yoffset);
+ LOGI("vi.bits_per_pixel: %d\n", vi.bits_per_pixel);
+ LOGI("vi.grayscale: %d\n", vi.grayscale);
+}
+#endif
+
+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;
+ }
+
+ fprintf(stderr, "Pixel format: %dx%d @ %dbpp\n", vi.xres, vi.yres, vi.bits_per_pixel);
+
+ vi.bits_per_pixel = PIXEL_SIZE * 8;
+ if (PIXEL_FORMAT == GGL_PIXEL_FORMAT_BGRA_8888) {
+ fprintf(stderr, "Pixel format: BGRA_8888\n");
+ if (PIXEL_SIZE != 4) fprintf(stderr, "E: Pixel Size mismatch!\n");
+ 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) {
+ fprintf(stderr, "Pixel format: RGBX_8888\n");
+ if (PIXEL_SIZE != 4) fprintf(stderr, "E: Pixel Size mismatch!\n");
+ 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 if (PIXEL_FORMAT == GGL_PIXEL_FORMAT_RGB_565) {
+#ifdef RECOVERY_RGB_565
+ fprintf(stderr, "Pixel format: RGB_565\n");
+ vi.blue.offset = 0;
+ vi.green.offset = 5;
+ vi.red.offset = 11;
+#else
+ fprintf(stderr, "Pixel format: BGR_565\n");
+ vi.blue.offset = 11;
+ vi.green.offset = 5;
+ vi.red.offset = 0;
+#endif
+ if (PIXEL_SIZE != 2) fprintf(stderr, "E: Pixel Size mismatch!\n");
+ vi.blue.length = 5;
+ vi.green.length = 6;
+ vi.red.length = 5;
+ vi.blue.msb_right = 0;
+ vi.green.msb_right = 0;
+ vi.red.msb_right = 0;
+ vi.transp.offset = 0;
+ vi.transp.length = 0;
+ }
+ else
+ {
+ perror("unknown pixel format");
+ close(fd);
+ return -1;
+ }
+
+ vi.vmode = FB_VMODE_NONINTERLACED;
+ vi.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
+
+ 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;
+ }
+
+#ifdef RECOVERY_GRAPHICS_USE_LINELENGTH
+ vi.xres_virtual = fi.line_length / PIXEL_SIZE;
+#endif
+
+ fb->version = sizeof(*fb);
+ fb->width = vi.xres;
+ fb->height = vi.yres;
+#ifdef BOARD_HAS_JANKY_BACKBUFFER
+ LOGI("setting JANKY BACKBUFFER\n");
+ fb->stride = fi.line_length/2;
+#else
+ fb->stride = vi.xres_virtual;
+#endif
+ fb->data = bits;
+ fb->format = PIXEL_FORMAT;
+ memset(fb->data, 0, vi.yres * fb->stride * PIXEL_SIZE);
+
+ fb++;
+
+ fb->version = sizeof(*fb);
+ fb->width = vi.xres;
+ fb->height = vi.yres;
+#ifdef BOARD_HAS_JANKY_BACKBUFFER
+ fb->stride = fi.line_length/2;
+ fb->data = (void*) (((unsigned) bits) + vi.yres * fi.line_length);
+#else
+ fb->stride = vi.xres_virtual;
+ fb->data = (void*) (((unsigned) bits) + vi.yres * fb->stride * PIXEL_SIZE);
+#endif
+ fb->format = PIXEL_FORMAT;
+ memset(fb->data, 0, vi.yres * fb->stride * PIXEL_SIZE);
+
+#ifdef PRINT_SCREENINFO
+ print_fb_var_screeninfo();
+#endif
+
+ 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_virtual;
+ ms->data = malloc(vi.xres_virtual * vi.yres * PIXEL_SIZE);
+ ms->format = PIXEL_FORMAT;
+}
+
+static void set_active_framebuffer(unsigned n)
+{
+ if (n > 1) return;
+ vi.yres_virtual = vi.yres * 2;
+ vi.yoffset = n * vi.yres;
+// vi.bits_per_pixel = PIXEL_SIZE * 8;
+ if (ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
+ perror("active fb swap failed");
+ }
+}
+
+void gr_flip(void)
+{
+ GGLContext *gl = gr_context;
+
+ /* swap front and back buffers */
+ gr_active_fb = (gr_active_fb + 1) & 1;
+
+#ifdef BOARD_HAS_FLIPPED_SCREEN
+ /* flip buffer 180 degrees for devices with physicaly inverted screens */
+ unsigned int i;
+ for (i = 1; i < (vi.xres * vi.yres); i++) {
+ unsigned short tmp = gr_mem_surface.data[i];
+ gr_mem_surface.data[i] = gr_mem_surface.data[(vi.xres * vi.yres * 2) - i];
+ gr_mem_surface.data[(vi.xres * vi.yres * 2) - i] = tmp;
+ }
+#endif
+
+ /* 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_virtual * vi.yres * PIXEL_SIZE);
+
+ /* 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_measureEx(const char *s, void* font)
+{
+ GRFont* fnt = (GRFont*) font;
+ int total = 0;
+ unsigned pos;
+ unsigned off;
+
+ if (!fnt) fnt = gr_font;
+
+ while ((off = *s++))
+ {
+ off -= 32;
+ if (off < 96)
+ total += (fnt->offset[off+1] - fnt->offset[off]);
+ }
+ return total;
+}
+
+unsigned character_width(const char *s, void* pFont)
+{
+ GRFont *font = (GRFont*) pFont;
+ unsigned off;
+
+ /* Handle default font */
+ if (!font) font = gr_font;
+
+ off = *s - 32;
+ if (off == 0)
+ return 0;
+
+ return font->offset[off+1] - font->offset[off];
+}
+
+int gr_textEx(int x, int y, const char *s, void* pFont)
+{
+ GGLContext *gl = gr_context;
+ GRFont *font = (GRFont*) pFont;
+ unsigned off;
+ unsigned cwidth;
+
+ /* Handle default font */
+ if (!font) font = gr_font;
+
+ 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;
+ cwidth = 0;
+ if (off < 96) {
+ cwidth = font->offset[off+1] - font->offset[off];
+ gl->texCoord2i(gl, (font->offset[off]) - x, 0 - y);
+ gl->recti(gl, x, y, x + cwidth, y + font->cheight);
+ x += cwidth;
+ }
+ }
+
+ return x;
+}
+
+int gr_textExW(int x, int y, const char *s, void* pFont, int max_width)
+{
+ GGLContext *gl = gr_context;
+ GRFont *font = (GRFont*) pFont;
+ unsigned off;
+ unsigned cwidth;
+
+ /* Handle default font */
+ if (!font) font = gr_font;
+
+ 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;
+ cwidth = 0;
+ if (off < 96) {
+ cwidth = font->offset[off+1] - font->offset[off];
+ if ((x + (int)cwidth) < max_width) {
+ gl->texCoord2i(gl, (font->offset[off]) - x, 0 - y);
+ gl->recti(gl, x, y, x + cwidth, y + font->cheight);
+ x += cwidth;
+ } else {
+ gl->texCoord2i(gl, (font->offset[off]) - x, 0 - y);
+ gl->recti(gl, x, y, max_width, y + font->cheight);
+ x = max_width;
+ return x;
+ }
+ }
+ }
+
+ return x;
+}
+
+int gr_textExWH(int x, int y, const char *s, void* pFont, int max_width, int max_height)
+{
+ GGLContext *gl = gr_context;
+ GRFont *font = (GRFont*) pFont;
+ unsigned off;
+ unsigned cwidth;
+ int rect_x, rect_y;
+
+ /* Handle default font */
+ if (!font) font = gr_font;
+
+ 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;
+ cwidth = 0;
+ if (off < 96) {
+ cwidth = font->offset[off+1] - font->offset[off];
+ if ((x + (int)cwidth) < max_width)
+ rect_x = x + cwidth;
+ else
+ rect_x = max_width;
+ if (y + font->cheight < max_height)
+ rect_y = y + font->cheight;
+ else
+ rect_y = max_height;
+
+ gl->texCoord2i(gl, (font->offset[off]) - x, 0 - y);
+ gl->recti(gl, x, y, rect_x, rect_y);
+ x += cwidth;
+ if (x > max_width)
+ return x;
+ }
+ }
+
+ return x;
+}
+
+int twgr_text(int x, int y, const char *s)
+{
+ GGLContext *gl = gr_context;
+ GRFont *font = gr_font;
+ unsigned off;
+ unsigned cwidth;
+
+ 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) {
+ cwidth = font->offset[off+1] - font->offset[off];
+ gl->texCoord2i(gl, (off * cwidth) - x, 0 - y);
+ gl->recti(gl, x, y, x + cwidth, y + font->cheight);
+ }
+ x += 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, x + w, y + 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;
+}
+
+void* gr_loadFont(const char* fontName)
+{
+ int fd;
+ GRFont *font = 0;
+ GGLSurface *ftex;
+ unsigned char *bits, *rle;
+ unsigned char *in, data;
+ unsigned width, height;
+ unsigned element;
+
+ fd = open(fontName, O_RDONLY);
+ if (fd == -1)
+ {
+ char tmp[128];
+
+ sprintf(tmp, "/res/fonts/%s.dat", fontName);
+ fd = open(tmp, O_RDONLY);
+ if (fd == -1)
+ return NULL;
+ }
+
+ font = calloc(sizeof(*font), 1);
+ ftex = &font->texture;
+
+ read(fd, &width, sizeof(unsigned));
+ read(fd, &height, sizeof(unsigned));
+ read(fd, font->offset, sizeof(unsigned) * 96);
+ font->offset[96] = width;
+
+ bits = malloc(width * height);
+ memset(bits, 0, width * height);
+
+ unsigned pos = 0;
+ while (pos < width * height)
+ {
+ int bit;
+
+ read(fd, &data, 1);
+ for (bit = 0; bit < 8; bit++)
+ {
+ if (data & (1 << (7-bit))) bits[pos++] = 255;
+ else bits[pos++] = 0;
+
+ if (pos == width * height) break;
+ }
+ }
+ close(fd);
+
+ ftex->version = sizeof(*ftex);
+ ftex->width = width;
+ ftex->height = height;
+ ftex->stride = width;
+ ftex->data = (void*) bits;
+ ftex->format = GGL_PIXEL_FORMAT_A_8;
+ font->cheight = height;
+ font->ascent = height - 2;
+ return (void*) font;
+}
+
+int gr_getFontDetails(void* font, unsigned* cheight, unsigned* maxwidth)
+{
+ GRFont *fnt = (GRFont*) font;
+
+ if (!fnt) fnt = gr_font;
+ if (!fnt) return -1;
+
+ if (cheight) *cheight = fnt->cheight;
+ if (maxwidth)
+ {
+ int pos;
+ *maxwidth = 0;
+ for (pos = 0; pos < 96; pos++)
+ {
+ unsigned int width = fnt->offset[pos+1] - fnt->offset[pos];
+ if (width > *maxwidth)
+ {
+ *maxwidth = width;
+ }
+ }
+ }
+ return 0;
+}
+
+static void gr_init_font(void)
+{
+ int fontRes;
+ GGLSurface *ftex;
+ unsigned char *bits, *rle;
+ unsigned char *in, data;
+ unsigned width, height;
+ unsigned element;
+
+ gr_font = calloc(sizeof(*gr_font), 1);
+ ftex = &gr_font->texture;
+
+ width = font.width;
+ height = font.height;
+
+ bits = malloc(width * height);
+ rle = bits;
+
+ in = font.rundata;
+ while((data = *in++))
+ {
+ memset(rle, (data & 0x80) ? 255 : 0, data & 0x7f);
+ rle += (data & 0x7f);
+ }
+ for (element = 0; element < 97; element++)
+ {
+ gr_font->offset[element] = (element * font.cwidth);
+ }
+
+ ftex->version = sizeof(*ftex);
+ ftex->width = width;
+ ftex->height = height;
+ ftex->stride = width;
+ ftex->data = (void*) bits;
+ ftex->format = GGL_PIXEL_FORMAT_A_8;
+ gr_font->cheight = height;
+ gr_font->ascent = height - 2;
+ return;
+}
+
+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.
+ } 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) {
+ perror("Unable to get framebuffer.\n");
+ 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);
+
+// gr_fb_blank(true);
+// gr_fb_blank(false);
+
+ 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;
+}
+
+void gr_fb_blank(int blank)
+{
+ int ret;
+
+ ret = ioctl(gr_fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);
+ if (ret < 0)
+ perror("ioctl(): blank");
+}
+
+int gr_get_surface(gr_surface* surface)
+{
+ GGLSurface* ms = malloc(sizeof(GGLSurface));
+ if (!ms) return -1;
+
+ // Allocate the data
+ get_memory_surface(ms);
+
+ // Now, copy the data
+ memcpy(ms->data, gr_mem_surface.data, vi.xres * vi.yres * vi.bits_per_pixel / 8);
+
+ *surface = (gr_surface*) ms;
+ return 0;
+}
+
+int gr_free_surface(gr_surface surface)
+{
+ if (!surface)
+ return -1;
+
+ GGLSurface* ms = (GGLSurface*) surface;
+ free(ms->data);
+ free(ms);
+ return 0;
+}
+
+void gr_write_frame_to_file(int fd)
+{
+ write(fd, gr_mem_surface.data, vi.xres * vi.yres * vi.bits_per_pixel / 8);
+}
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