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android_bootable_recovery/minuitwrp/graphics.c
T
Ethan Yonker c798c9cd24 Merge up to AOSP marshmallow-release 
In order to maintain compatibility with older trees, we now have
minadbd.old and minui.old. I had to use a TARGET_GLOBAL_CFLAG to
handle ifdef issues in minui/minui.d because healthd includes
minui/minui.h and there was no other alternative to make minui.h
compatible with older trees without having to modify healthd rules
which is outside of TWRP.

Note that the new minui does not currently have support for qcom
overlay graphics. Support for this graphics mode will likely be
added in a later patch set. If you are building in a 6.0 tree and
have a device that needs qcom overlay graphics, be warned, as off
mode charging may not work properly. A dead battery in this case
could potentially brick your device if it is unable to charge as
healthd handles charging duties.

Update rules for building toolbox and add rules for making toybox

Use permissive.sh in init.rc which will follow symlinks so we do
not have to worry about what binary is supplying the setenforce
functionality (toolbox, toybox, or busybox).

Fix a few warnings in the main recovery binary source code.

Fix a few includes that were missing that prevented compiling in
6.0

Change-Id: Ia67aa2107d260883da5e365475a19bea538e8b97
2015-10-09 11:15:29 -05:00

936 lines
23 KiB
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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.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 NUM_BUFFERS 2
#define MAX_DISPLAY_DIM 2048
// #define PRINT_SCREENINFO 1 // Enables printing of screen info to log
typedef struct {
int type;
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[NUM_BUFFERS];
GGLSurface gr_mem_surface;
static unsigned gr_active_fb = 0;
static unsigned double_buffering = 0;
static int gr_is_curr_clr_opaque = 0;
static int gr_fb_fd = -1;
static int gr_vt_fd = -1;
struct fb_var_screeninfo vi;
static struct fb_fix_screeninfo fi;
static bool has_overlay = false;
static int leftSplit = 0;
static int rightSplit = 0;
bool target_has_overlay(char *version);
int free_ion_mem(void);
int alloc_ion_mem(unsigned int size);
int allocate_overlay(int fd, GGLSurface gr_fb[]);
int free_overlay(int fd);
int overlay_display_frame(int fd, GGLubyte* data, size_t size);
#ifdef PRINT_SCREENINFO
static void print_fb_var_screeninfo()
{
printf("vi.xres: %d\n", vi.xres);
printf("vi.yres: %d\n", vi.yres);
printf("vi.xres_virtual: %d\n", vi.xres_virtual);
printf("vi.yres_virtual: %d\n", vi.yres_virtual);
printf("vi.xoffset: %d\n", vi.xoffset);
printf("vi.yoffset: %d\n", vi.yoffset);
printf("vi.bits_per_pixel: %d\n", vi.bits_per_pixel);
printf("vi.grayscale: %d\n", vi.grayscale);
}
#endif
#ifdef MSM_BSP
int getLeftSplit(void) {
//Default even split for all displays with high res
int lSplit = vi.xres / 2;
//Override if split published by driver
if (leftSplit)
lSplit = leftSplit;
return lSplit;
}
int getRightSplit(void) {
return rightSplit;
}
void setDisplaySplit(void) {
char split[64] = {0};
FILE* fp = fopen("/sys/class/graphics/fb0/msm_fb_split", "r");
if (fp) {
//Format "left right" space as delimiter
if(fread(split, sizeof(char), 64, fp)) {
leftSplit = atoi(split);
printf("Left Split=%d\n",leftSplit);
char *rght = strpbrk(split, " ");
if (rght)
rightSplit = atoi(rght + 1);
printf("Right Split=%d\n", rightSplit);
}
} else {
printf("Failed to open mdss_fb_split node\n");
}
if (fp)
fclose(fp);
}
bool isDisplaySplit(void) {
if (vi.xres > MAX_DISPLAY_DIM)
return true;
//check if right split is set by driver
if (getRightSplit())
return true;
return false;
}
int getFbXres(void) {
return vi.xres;
}
int getFbYres (void) {
return vi.yres;
}
#endif // MSM_BSP
static int get_framebuffer(GGLSurface *fb)
{
int fd, index = 0;
void *bits;
fd = open("/dev/graphics/fb0", O_RDWR);
while (fd < 0 && index < 30) {
usleep(1000);
fd = open("/dev/graphics/fb0", O_RDWR);
index++;
}
if (fd < 0) {
perror("cannot open fb0\n");
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;
}
#ifdef MSM_BSP
has_overlay = target_has_overlay(fi.id);
if (isTargetMdp5())
setDisplaySplit();
#else
has_overlay = false;
#endif
if (!has_overlay) {
printf("Not using qualcomm overlay, '%s'\n", fi.id);
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;
}
} else {
printf("Using qualcomm overlay\n");
}
#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
printf("setting JANKY BACKBUFFER\n");
fb->stride = fi.line_length/2;
#else
fb->stride = vi.xres_virtual;
#endif
fb->format = PIXEL_FORMAT;
if (!has_overlay) {
fb->data = bits;
memset(fb->data, 0, vi.yres * fb->stride * PIXEL_SIZE);
}
fb++;
#ifndef TW_DISABLE_DOUBLE_BUFFERING
/* check if we can use double buffering */
if (vi.yres * fi.line_length * 2 > fi.smem_len)
#else
printf("TW_DISABLE_DOUBLE_BUFFERING := true\n");
#endif
return fd;
double_buffering = 1;
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 = (GGLubyte*) (((unsigned long) bits) + vi.yres * fi.line_length);
#else
fb->stride = vi.xres_virtual;
fb->data = (GGLubyte*) (((unsigned long) bits) + vi.yres * fb->stride * PIXEL_SIZE);
#endif
fb->format = PIXEL_FORMAT;
if (!has_overlay) {
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 || !double_buffering) return;
vi.yres_virtual = vi.yres * NUM_BUFFERS;
vi.yoffset = n * vi.yres;
// vi.bits_per_pixel = PIXEL_SIZE * 8;
if (ioctl(gr_fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
perror("active fb swap failed");
}
}
void gr_flip(void)
{
if (-EINVAL == overlay_display_frame(gr_fb_fd, gr_mem_surface.data,
(fi.line_length * vi.yres))) {
GGLContext *gl = gr_context;
/* swap front and back buffers */
if (double_buffering)
gr_active_fb = (gr_active_fb + 1) & 1;
#ifdef BOARD_HAS_FLIPPED_SCREEN
/* flip buffer 180 degrees for devices with physicaly inverted screens */
unsigned int i;
unsigned int j;
for (i = 0; i < vi.yres; i++) {
for (j = 0; j < vi.xres; j++) {
memcpy(gr_framebuffer[gr_active_fb].data + (i * vi.xres_virtual + j) * PIXEL_SIZE,
gr_mem_surface.data + ((vi.yres - i - 1) * vi.xres_virtual + vi.xres - j - 1) * PIXEL_SIZE, PIXEL_SIZE);
}
}
#else
/* 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);
#endif
/* 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);
gr_is_curr_clr_opaque = (a == 255);
}
int gr_measureEx(const char *s, void* font)
{
GRFont* fnt = (GRFont*) font;
int total = 0;
unsigned pos;
unsigned off;
if (!fnt) fnt = gr_font;
#ifndef TW_DISABLE_TTF
if(fnt->type == FONT_TYPE_TTF)
return gr_ttf_measureEx(s, font);
#endif
while ((off = *s++))
{
off -= 32;
if (off < 96)
total += (fnt->offset[off+1] - fnt->offset[off]);
}
return total;
}
int gr_maxExW(const char *s, void* font, int max_width)
{
GRFont* fnt = (GRFont*) font;
int total = 0;
unsigned pos;
unsigned off;
if (!fnt) fnt = gr_font;
#ifndef TW_DISABLE_TTF
if(fnt->type == FONT_TYPE_TTF)
return gr_ttf_maxExW(s, font, max_width);
#endif
while ((off = *s++))
{
off -= 32;
if (off < 96) {
max_width -= (fnt->offset[off+1] - fnt->offset[off]);
if (max_width > 0) {
total++;
} else {
return total;
}
}
}
return total;
}
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;
#ifndef TW_DISABLE_TTF
if(font->type == FONT_TYPE_TTF)
return gr_ttf_textExWH(gl, x, y, s, pFont, -1, -1);
#endif
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;
}
}
gl->disable(gl, GGL_TEXTURE_2D);
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;
#ifndef TW_DISABLE_TTF
if(font->type == FONT_TYPE_TTF)
return gr_ttf_textExWH(gl, x, y, s, pFont, max_width, -1);
#endif
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;
}
}
}
gl->disable(gl, GGL_TEXTURE_2D);
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;
#ifndef TW_DISABLE_TTF
if(font->type == FONT_TYPE_TTF)
return gr_ttf_textExWH(gl, x, y, s, pFont, max_width, max_height);
#endif
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 < (unsigned int)(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;
}
}
gl->disable(gl, GGL_TEXTURE_2D);
return x;
}
void gr_clip(int x, int y, int w, int h)
{
GGLContext *gl = gr_context;
gl->scissor(gl, x, y, w, h);
gl->enable(gl, GGL_SCISSOR_TEST);
}
void gr_noclip()
{
GGLContext *gl = gr_context;
gl->scissor(gl, 0, 0, gr_fb_width(), gr_fb_height());
gl->disable(gl, GGL_SCISSOR_TEST);
}
void gr_fill(int x, int y, int w, int h)
{
GGLContext *gl = gr_context;
if(gr_is_curr_clr_opaque)
gl->disable(gl, GGL_BLEND);
gl->recti(gl, x, y, x + w, y + h);
if(gr_is_curr_clr_opaque)
gl->enable(gl, GGL_BLEND);
}
void gr_line(int x0, int y0, int x1, int y1, int width)
{
GGLContext *gl = gr_context;
if(gr_is_curr_clr_opaque)
gl->disable(gl, GGL_BLEND);
const int coords0[2] = { x0 << 4, y0 << 4 };
const int coords1[2] = { x1 << 4, y1 << 4 };
gl->linex(gl, coords0, coords1, width << 4);
if(gr_is_curr_clr_opaque)
gl->enable(gl, GGL_BLEND);
}
gr_surface gr_render_circle(int radius, unsigned char r, unsigned char g, unsigned char b, unsigned char a)
{
int rx, ry;
GGLSurface *surface;
const int diameter = radius*2 + 1;
const int radius_check = radius*radius + radius*0.8;
const uint32_t px = (a << 24) | (b << 16) | (g << 8) | r;
uint32_t *data;
surface = malloc(sizeof(GGLSurface));
memset(surface, 0, sizeof(GGLSurface));
data = malloc(diameter * diameter * 4);
memset(data, 0, diameter * diameter * 4);
surface->version = sizeof(surface);
surface->width = diameter;
surface->height = diameter;
surface->stride = diameter;
surface->data = (GGLubyte*)data;
surface->format = GGL_PIXEL_FORMAT_RGBA_8888;
for(ry = -radius; ry <= radius; ++ry)
for(rx = -radius; rx <= radius; ++rx)
if(rx*rx+ry*ry <= radius_check)
*(data + diameter*(radius + ry) + (radius+rx)) = px;
return surface;
}
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;
GGLSurface *surface = (GGLSurface*)source;
if(surface->format == GGL_PIXEL_FORMAT_RGBX_8888)
gl->disable(gl, GGL_BLEND);
gl->bindTexture(gl, surface);
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);
gl->disable(gl, GGL_TEXTURE_2D);
if(surface->format == GGL_PIXEL_FORMAT_RGBX_8888)
gl->enable(gl, GGL_BLEND);
}
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, TWRES "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->type = FONT_TYPE_TWRP;
font->cheight = height;
font->ascent = height - 2;
return (void*) font;
}
void gr_freeFont(void *font)
{
GRFont *f = font;
free(f->texture.data);
free(f);
}
int gr_getMaxFontHeight(void *font)
{
GRFont *fnt = (GRFont*) font;
if (!fnt) fnt = gr_font;
if (!fnt) return -1;
#ifndef TW_DISABLE_TTF
if(fnt->type == FONT_TYPE_TTF)
return gr_ttf_getMaxFontHeight(font);
#endif
return fnt->cheight;
}
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->type = FONT_TYPE_TWRP;
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;
if (!has_overlay)
set_active_framebuffer(0);
gl->colorBuffer(gl, &gr_mem_surface);
gl->activeTexture(gl, 0);
gl->enable(gl, GGL_BLEND);
gl->blendFunc(gl, GGL_SRC_ALPHA, GGL_ONE_MINUS_SRC_ALPHA);
#ifdef TW_SCREEN_BLANK_ON_BOOT
printf("TW_SCREEN_BLANK_ON_BOOT := true\n");
gr_fb_blank(true);
gr_fb_blank(false);
#endif
if (!alloc_ion_mem(fi.line_length * vi.yres))
allocate_overlay(gr_fb_fd, gr_framebuffer);
return 0;
}
void gr_exit(void)
{
free_overlay(gr_fb_fd);
free_ion_mem();
close(gr_fb_fd);
gr_fb_fd = -1;
free(gr_mem_surface.data);
ioctl(gr_vt_fd, KDSETMODE, (void*) KD_TEXT);
close(gr_vt_fd);
gr_vt_fd = -1;
}
int gr_fb_width(void)
{
return gr_framebuffer[0].width;
}
int gr_fb_height(void)
{
return gr_framebuffer[0].height;
}
gr_pixel *gr_fb_data(void)
{
return (unsigned short *) gr_mem_surface.data;
}
int gr_fb_blank(int blank)
{
int ret;
//if (blank)
//free_overlay(gr_fb_fd);
ret = ioctl(gr_fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);
if (ret < 0)
perror("ioctl(): blank");
//if (!blank)
//allocate_overlay(gr_fb_fd, gr_framebuffer);
return ret;
}
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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