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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 <string.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 <time.h>
#include <pixelflinger/pixelflinger.h>
#include "../gui/placement.h"
#include "minui.h"
#include "graphics.h"
struct GRFont {
GRSurface* texture;
int cwidth;
int cheight;
};
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 unsigned char gr_current_r = 255;
static unsigned char gr_current_g = 255;
static unsigned char gr_current_b = 255;
GRSurface* gr_draw = NULL;
static GGLContext *gr_context = 0;
GGLSurface gr_mem_surface;
static int gr_is_curr_clr_opaque = 0;
int gr_textEx_scaleW(int x, int y, const char *s, void* pFont, int max_width, int placement, int scale)
{
GGLContext *gl = gr_context;
void* vfont = pFont;
GRFont *font = (GRFont*) pFont;
int y_scale = 0, measured_width, measured_height, new_height;
if (!s || strlen(s) == 0 || !font)
return 0;
measured_height = gr_ttf_getMaxFontHeight(font);
if (scale) {
measured_width = gr_ttf_measureEx(s, vfont);
if (measured_width > max_width) {
// Adjust font size down until the text fits
void *new_font = gr_ttf_scaleFont(vfont, max_width, measured_width);
if (!new_font) {
printf("gr_textEx_scaleW new_font is NULL\n");
return 0;
}
measured_width = gr_ttf_measureEx(s, new_font);
// These next 2 lines adjust the y point based on the new font's height
new_height = gr_ttf_getMaxFontHeight(new_font);
y_scale = (measured_height - new_height) / 2;
vfont = new_font;
}
} else
measured_width = gr_ttf_measureEx(s, vfont);
int x_adj = measured_width;
if (measured_width > max_width)
x_adj = max_width;
if (placement != TOP_LEFT && placement != BOTTOM_LEFT && placement != TEXT_ONLY_RIGHT) {
if (placement == CENTER || placement == CENTER_X_ONLY)
x -= (x_adj / 2);
else
x -= x_adj;
}
if (placement != TOP_LEFT && placement != TOP_RIGHT) {
if (placement == CENTER || placement == TEXT_ONLY_RIGHT)
y -= (measured_height / 2);
else if (placement == BOTTOM_LEFT || placement == BOTTOM_RIGHT)
y -= measured_height;
}
return gr_ttf_textExWH(gl, x, y + y_scale, s, vfont, measured_width + x, -1);
}
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_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 = (GGLSurface *)malloc(sizeof(GGLSurface));
memset(surface, 0, sizeof(GGLSurface));
data = (uint32_t *)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 (gr_surface)surface;
}
void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
{
GGLContext *gl = gr_context;
GGLint color[4];
#if defined(RECOVERY_ABGR) || defined(RECOVERY_BGRA)
color[0] = ((b << 8) | r) + 1;
color[1] = ((g << 8) | g) + 1;
color[2] = ((r << 8) | b) + 1;
color[3] = ((a << 8) | a) + 1;
#else
color[0] = ((r << 8) | r) + 1;
color[1] = ((g << 8) | g) + 1;
color[2] = ((b << 8) | b) + 1;
color[3] = ((a << 8) | a) + 1;
#endif
gl->color4xv(gl, color);
gr_is_curr_clr_opaque = (a == 255);
}
void gr_clear()
{
if (gr_draw->pixel_bytes == 2) {
gr_fill(0, 0, gr_fb_width(), gr_fb_height());
return;
}
// This code only works on 32bpp devices
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 {
unsigned char* px = gr_draw->data;
for (int y = 0; y < gr_draw->height; ++y) {
for (int 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 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_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_flip() {
gr_draw = gr_backend->flip(gr_backend);
// On double buffered back ends, when we flip, we need to tell
// pixel flinger to draw to the other buffer
gr_mem_surface.data = (GGLubyte*)gr_draw->data;
gr_context->colorBuffer(gr_context, &gr_mem_surface);
}
static void get_memory_surface(GGLSurface* ms) {
ms->version = sizeof(*ms);
ms->width = gr_draw->width;
ms->height = gr_draw->height;
ms->stride = gr_draw->row_bytes / gr_draw->pixel_bytes;
ms->data = (GGLubyte*)gr_draw->data;
ms->format = gr_draw->format;
}
int gr_init(void)
{
gr_draw = NULL;
#ifdef MSM_BSP
gr_backend = open_overlay();
if (gr_backend) {
gr_draw = gr_backend->init(gr_backend);
if (!gr_draw) {
gr_backend->exit(gr_backend);
} else
printf("Using overlay graphics.\n");
}
#endif
#ifdef HAS_ADF
if (!gr_backend || !gr_draw) {
gr_backend = open_adf();
if (gr_backend) {
gr_draw = gr_backend->init(gr_backend);
if (!gr_draw) {
gr_backend->exit(gr_backend);
} else
printf("Using adf graphics.\n");
}
}
#else
#ifdef MSM_BSP
printf("Skipping adf graphics because TW_TARGET_USES_QCOM_BSP := true\n");
#else
printf("Skipping adf graphics -- not present in build tree\n");
#endif
#endif
#ifdef HAS_DRM
if (!gr_backend || !gr_draw) {
gr_backend = open_drm();
gr_draw = gr_backend->init(gr_backend);
if (gr_draw)
printf("Using drm graphics.\n");
}
#else
printf("Skipping drm graphics -- not present in build tree\n");
#endif
if (!gr_backend || !gr_draw) {
gr_backend = open_fbdev();
gr_draw = gr_backend->init(gr_backend);
if (gr_draw == NULL) {
return -1;
} else
printf("Using fbdev graphics.\n");
}
overscan_offset_x = gr_draw->width * overscan_percent / 100;
overscan_offset_y = gr_draw->height * overscan_percent / 100;
// Set up pixelflinger
get_memory_surface(&gr_mem_surface);
gglInit(&gr_context);
GGLContext *gl = gr_context;
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_flip();
gr_flip();
#ifdef TW_SCREEN_BLANK_ON_BOOT
printf("TW_SCREEN_BLANK_ON_BOOT := true\n");
gr_fb_blank(true);
gr_fb_blank(false);
#endif
return 0;
}
void gr_exit(void)
{
gr_backend->exit(gr_backend);
}
int gr_fb_width(void)
{
return gr_draw->width - 2*overscan_offset_x;
}
int gr_fb_height(void)
{
return gr_draw->height - 2*overscan_offset_y;
}
void gr_fb_blank(bool blank)
{
gr_backend->blank(gr_backend, blank);
}
int gr_get_surface(gr_surface* surface)
{
GGLSurface* ms = (GGLSurface*)malloc(sizeof(GGLSurface));
if (!ms) return -1;
// Allocate the data
get_memory_surface(ms);
ms->data = (GGLubyte*)malloc(ms->stride * ms->height * gr_draw->pixel_bytes);
// Now, copy the data
memcpy(ms->data, gr_mem_surface.data, gr_draw->width * gr_draw->height * gr_draw->pixel_bytes / 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, gr_draw->width * gr_draw->height * gr_draw->pixel_bytes / 8);
}