blob: 381aaf9c3af3ffa4262a2a2abe911273fe6cf9f1 [file] [log] [blame]
/*
* 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 "graphics.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory>
#include <android-base/properties.h>
#ifdef BOARD_USE_CUSTOM_RECOVERY_FONT
#include BOARD_USE_CUSTOM_RECOVERY_FONT
#else
#include "font_10x18.h"
#endif
#include "graphics_drm.h"
#include "graphics_fbdev.h"
#include "minui/minui.h"
static GRFont* gr_font = nullptr;
static MinuiBackend* gr_backend = nullptr;
static int overscan_offset_x = 0;
static int overscan_offset_y = 0;
#ifdef TW_NO_MINUI_CUSTOM_FONTS
static unsigned char gr_current_r = 255;
static unsigned char gr_current_g = 255;
static unsigned char gr_current_b = 255;
#endif
static unsigned char gr_current_a = 255;
static unsigned char rgb_555[2];
static unsigned char gr_current_r5 = 31;
static unsigned char gr_current_g5 = 63;
static unsigned char gr_current_b5 = 31;
static uint32_t gr_current = ~0;
// gr_draw is owned by backends.
static GRSurface* gr_draw = nullptr;
static GRRotation rotation = GRRotation::NONE;
static PixelFormat pixel_format = PixelFormat::UNKNOWN;
// The graphics backend list that provides fallback options for the default backend selection.
// For example, it will fist try DRM, then try FBDEV if DRM is unavailable.
constexpr auto default_backends = { GraphicsBackend::DRM, GraphicsBackend::FBDEV };
static bool outside(int x, int y) {
auto swapped = (rotation == GRRotation::LEFT || rotation == GRRotation::RIGHT);
return x < 0 || x >= (swapped ? gr_draw->height : gr_draw->width) || y < 0 ||
y >= (swapped ? gr_draw->width : gr_draw->height);
}
#ifdef TW_NO_MINUI_CUSTOM_FONTS
int gr_measure(const char *s)
{
return gr_font->char_width * strlen(s);
}
void gr_font_size(int *x, int *y)
{
*x = gr_font->char_width;
*y = gr_font->char_height;
}
#else // TW_USE_MINUI_CUSTOM_FONTS
const GRFont* gr_sys_font() {
return gr_font;
}
PixelFormat gr_pixel_format() {
return pixel_format;
}
int gr_measure(const GRFont* font, const char* s) {
if (font == nullptr) {
return -1;
}
return font->char_width * strlen(s);
}
int gr_font_size(const GRFont* font, int* x, int* y) {
if (font == nullptr) {
return -1;
}
*x = font->char_width;
*y = font->char_height;
return 0;
}
#endif // TW_NO_MINUI_CUSTOM_FONTS
void blend_16bpp(unsigned char* px, unsigned r5, unsigned g5, unsigned b5, unsigned char a)
{
unsigned char orig[2];
orig[0] = px[0];
orig[1] = px[1];
/* This code is a little easier to read
unsigned oldred = (orig[1] >> 3);
unsigned oldgreen = (((orig[0] >> 5) << 3) + (orig[1] & 0x7));
unsigned oldblue = (orig[0] & 0x1F);
unsigned newred = (oldred * (255-a) + r5 * a) / 255;
unsigned newgreen = (oldgreen * (255-a) + g5 * a) / 255;
unsigned newblue = (oldblue * (255-a) + b5 * a) / 255;
*/
unsigned newred = ((orig[1] >> 3) * (255-a) + r5 * a) / 255;
unsigned newgreen = ((((orig[0] >> 5) << 3) + (orig[1] & 0x7)) * (255-a) + g5 * a) / 255;
unsigned newblue = ((orig[0] & 0x1F) * (255-a) + b5 * a) / 255;
*px++ = (newgreen << 5) + (newblue);
*px++ = (newred << 3) + (newgreen >> 3);
}
#ifdef TW_NO_MINUI_CUSTOM_FONTS
static void text_blend_old(unsigned char* src_p, int src_row_bytes,
unsigned char* dst_p, int dst_row_bytes,
int width, int height)
{
for (int j = 0; j < height; ++j) {
unsigned char* sx = src_p;
unsigned char* px = dst_p;
for (int i = 0; i < width; ++i) {
unsigned char a = *sx++;
if (gr_current_a < 255) a = ((int)a * gr_current_a) / 255;
if (a == 255) {
if (gr_draw->pixel_bytes == 2) {
*px++ = rgb_555[0];
*px++ = rgb_555[1];
} else {
*px++ = gr_current_r;
*px++ = gr_current_g;
*px++ = gr_current_b;
px++;
}
} else if (a > 0) {
if (gr_draw->pixel_bytes == 2) {
blend_16bpp(px, gr_current_r5, gr_current_g5, gr_current_b5, a);
px += gr_draw->pixel_bytes;
} else {
*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 += gr_draw->pixel_bytes;
}
}
src_p += src_row_bytes;
dst_p += dst_row_bytes;
}
}
#endif // TW_NO_MINUI_CUSTOM_FONTS
// Blends gr_current onto pix value, assumes alpha as most significant byte.
static inline uint32_t pixel_blend_argb(uint8_t alpha, uint32_t pix) {
if (alpha == 255) return gr_current;
if (alpha == 0) return pix;
uint32_t pix_r = pix & 0xff;
uint32_t pix_g = pix & 0xff00;
uint32_t pix_b = pix & 0xff0000;
uint32_t cur_r = gr_current & 0xff;
uint32_t cur_g = gr_current & 0xff00;
uint32_t cur_b = gr_current & 0xff0000;
uint32_t out_r = (pix_r * (255 - alpha) + cur_r * alpha) / 255;
uint32_t out_g = (pix_g * (255 - alpha) + cur_g * alpha) / 255;
uint32_t out_b = (pix_b * (255 - alpha) + cur_b * alpha) / 255;
return (out_r & 0xff) | (out_g & 0xff00) | (out_b & 0xff0000) | (gr_current & 0xff000000);
}
static inline uint32_t pixel_blend_rgba(uint8_t alpha, uint32_t pix) {
if (alpha == 255) return gr_current;
if (alpha == 0) return pix;
uint32_t pix_r = pix & 0xff00;
uint32_t pix_g = pix & 0xff0000;
uint32_t pix_b = pix & 0xff000000;
uint32_t cur_r = gr_current & 0xff00;
uint32_t cur_g = gr_current & 0xff0000;
uint32_t cur_b = gr_current & 0xff000000;
uint32_t out_r = (pix_r * (255 - alpha) + cur_r * alpha) / 255;
uint32_t out_g = (pix_g * (255 - alpha) + cur_g * alpha) / 255;
uint32_t out_b = (pix_b * (255 - alpha) + cur_b * alpha) / 255;
return (gr_current & 0xff) | (out_r & 0xff00) | (out_g & 0xff0000) | (out_b & 0xff000000);
}
static inline uint32_t pixel_blend(uint8_t alpha, uint32_t pix) {
if (pixel_format == PixelFormat::RGBA) {
return pixel_blend_rgba(alpha, pix);
}
return pixel_blend_argb(alpha, pix);
}
static inline uint32_t get_alphamask() {
if (pixel_format == PixelFormat::RGBA) {
return 0x000000ff;
}
return 0xff000000;
}
static inline uint8_t get_alpha_shift() {
if (pixel_format == PixelFormat::RGBA) {
return 0;
}
return 24;
}
static inline uint8_t get_alpha(uint32_t pix) {
return static_cast<uint8_t>((pix & (gr_current & get_alphamask())) >> get_alpha_shift());
}
// Increments pixel pointer right, with current rotation.
static void incr_x(uint32_t** p, int row_pixels) {
if (rotation == GRRotation::LEFT) {
*p = *p - row_pixels;
} else if (rotation == GRRotation::RIGHT) {
*p = *p + row_pixels;
} else if (rotation == GRRotation::DOWN) {
*p = *p - 1;
} else { // GRRotation::NONE
*p = *p + 1;
}
}
// Increments pixel pointer down, with current rotation.
static void incr_y(uint32_t** p, int row_pixels) {
if (rotation == GRRotation::LEFT) {
*p = *p + 1;
} else if (rotation == GRRotation::RIGHT) {
*p = *p - 1;
} else if (rotation == GRRotation::DOWN) {
*p = *p - row_pixels;
} else { // GRRotation::NONE
*p = *p + row_pixels;
}
}
// Returns pixel pointer at given coordinates with rotation adjustment.
static uint32_t* PixelAt(GRSurface* surface, int x, int y, int row_pixels) {
switch (rotation) {
case GRRotation::NONE:
return reinterpret_cast<uint32_t*>(surface->data()) + y * row_pixels + x;
case GRRotation::RIGHT:
return reinterpret_cast<uint32_t*>(surface->data()) + x * row_pixels + (surface->width - y);
case GRRotation::DOWN:
return reinterpret_cast<uint32_t*>(surface->data()) + (surface->height - 1 - y) * row_pixels +
(surface->width - 1 - x);
case GRRotation::LEFT:
return reinterpret_cast<uint32_t*>(surface->data()) + (surface->height - 1 - x) * row_pixels +
y;
default:
printf("invalid rotation %d", static_cast<int>(rotation));
}
return nullptr;
}
static void TextBlend(const uint8_t* src_p, int src_row_bytes, uint32_t* dst_p, int dst_row_pixels,
int width, int height) {
uint8_t alpha_current = get_alpha(gr_current);
for (int j = 0; j < height; ++j) {
const uint8_t* sx = src_p;
uint32_t* px = dst_p;
for (int i = 0; i < width; ++i, incr_x(&px, dst_row_pixels)) {
uint8_t a = *sx++;
if (alpha_current < 255) a = (static_cast<uint32_t>(a) * alpha_current) / 255;
*px = pixel_blend(a, *px);
}
src_p += src_row_bytes;
incr_y(&dst_p, dst_row_pixels);
}
}
#ifdef TW_NO_MINUI_CUSTOM_FONTS
void gr_text(int x, int y, const char *s, bool bold)
{
GRFont* font = gr_font;
if (!font->texture || gr_current_a == 0) return;
bold = bold && (font->texture->height != font->char_height);
x += overscan_offset_x;
y += overscan_offset_y;
unsigned char ch;
while ((ch = *s++)) {
if (outside(x, y) || outside(x+font->char_width-1, y+font->char_height-1)) break;
if (ch < ' ' || ch > '~') {
ch = '?';
}
unsigned char* src_p = font->texture->data + ((ch - ' ') * font->char_width) +
(bold ? font->char_height * font->texture->row_bytes : 0);
unsigned char* dst_p = gr_draw->data + y*gr_draw->row_bytes + x*gr_draw->pixel_bytes;
text_blend_old(src_p, font->texture->row_bytes,
dst_p, gr_draw->row_bytes,
font->char_width, font->char_height);
x += font->char_width;
}
}
#else //TW_NO_MINUI_CUSTOM_FONTS
void gr_text(const GRFont* font, int x, int y, const char* s, bool bold) {
if (!font || !font->texture || (gr_current & get_alphamask()) == 0) return;
if (font->texture->pixel_bytes != 1) {
printf("gr_text: font has wrong format\n");
return;
}
bold = bold && (font->texture->height != font->char_height);
x += overscan_offset_x;
y += overscan_offset_y;
unsigned char ch;
while ((ch = *s++)) {
if (outside(x, y) || outside(x + font->char_width - 1, y + font->char_height - 1)) break;
if (ch < ' ' || ch > '~') {
ch = '?';
}
int row_pixels = gr_draw->row_bytes / gr_draw->pixel_bytes;
const uint8_t* src_p = font->texture->data() + ((ch - ' ') * font->char_width) +
(bold ? font->char_height * font->texture->row_bytes : 0);
uint32_t* dst_p = PixelAt(gr_draw, x, y, row_pixels);
TextBlend(src_p, font->texture->row_bytes, dst_p, row_pixels, font->char_width,
font->char_height);
x += font->char_width;
}
}
#endif //TW_NO_MINUI_CUSTOM_FONTS
void gr_texticon(int x, int y, const GRSurface* icon) {
if (icon == nullptr) return;
if (icon->pixel_bytes != 1) {
printf("gr_texticon: source has wrong format\n");
return;
}
x += overscan_offset_x;
y += overscan_offset_y;
if (outside(x, y) || outside(x + icon->width - 1, y + icon->height - 1)) return;
int row_pixels = gr_draw->row_bytes / gr_draw->pixel_bytes;
const uint8_t* src_p = icon->data();
uint32_t* dst_p = PixelAt(gr_draw, x, y, row_pixels);
TextBlend(src_p, icon->row_bytes, dst_p, row_pixels, icon->width, icon->height);
}
void gr_convert_rgb_555(unsigned char r, unsigned char g, unsigned char b)
{
gr_current_r5 = (((r & 0xFF) * 0x1F) + 0x7F) / 0xFF;
gr_current_g5 = (((g & 0xFF) * 0x3F) + 0x7F) / 0xFF;
gr_current_b5 = (((b & 0xFF) * 0x1F) + 0x7F) / 0xFF;
rgb_555[0] = (gr_current_g5 << 5) + (gr_current_b5);
rgb_555[1] = (gr_current_r5 << 3) + (gr_current_g5 >> 3);
}
void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
#ifdef TW_NO_MINUI_CUSTOM_FONTS
#if defined(RECOVERY_ABGR) || defined(RECOVERY_BGRA)
gr_current_r = b;
gr_current_g = g;
gr_current_b = r;
#else
gr_current_r = r;
gr_current_g = g;
gr_current_b = b;
#endif
#endif
if (gr_draw->pixel_bytes == 2) {
gr_current_a = a;
gr_convert_rgb_555(r, g, b);
return;
}
uint32_t r32 = r, g32 = g, b32 = b, a32 = a;
if (pixel_format == PixelFormat::ARGB || pixel_format == PixelFormat::BGRA) {
gr_current = (a32 << 24) | (r32 << 16) | (g32 << 8) | b32;
} else if (pixel_format == PixelFormat::RGBA) {
gr_current = (b32 << 24) | (g32 << 16) | (r32 << 8) | a32;
} else {
gr_current = (a32 << 24) | (b32 << 16) | (g32 << 8) | r32;
}
}
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 & 0xff) == ((gr_current >> 8) & 0xff) &&
(gr_current & 0xff) == ((gr_current >> 16) & 0xff) &&
(gr_current & 0xff) == ((gr_current >> 24) & 0xff) &&
gr_draw->row_bytes == gr_draw->width * gr_draw->pixel_bytes) {
memset(gr_draw->data(), gr_current & 0xff, gr_draw->height * gr_draw->row_bytes);
} else {
uint32_t* px = reinterpret_cast<uint32_t*>(gr_draw->data());
int row_diff = gr_draw->row_bytes / gr_draw->pixel_bytes - gr_draw->width;
for (int y = 0; y < gr_draw->height; ++y) {
for (int x = 0; x < gr_draw->width; ++x) {
*px++ = gr_current;
}
px += row_diff;
}
}
}
void gr_fill(int x1, int y1, int x2, int y2) {
x1 += overscan_offset_x;
y1 += overscan_offset_y;
x2 += overscan_offset_x;
y2 += overscan_offset_y;
if (outside(x1, y1) || outside(x2 - 1, y2 - 1)) return;
int row_pixels = gr_draw->row_bytes / gr_draw->pixel_bytes;
uint32_t* p = PixelAt(gr_draw, x1, y1, row_pixels);
uint8_t alpha = get_alpha(gr_current);
if (alpha > 0) {
for (int y = y1; y < y2; ++y) {
uint32_t* px = p;
for (int x = x1; x < x2; ++x) {
*px = pixel_blend(alpha, *px);
incr_x(&px, row_pixels);
}
incr_y(&p, row_pixels);
}
}
}
void gr_blit_32to16(const GRSurface* source, int sx, int sy, int w, int h, int dx, int dy) {
dx += overscan_offset_x;
dy += overscan_offset_y;
if (outside(dx, dy) || outside(dx+w-1, dy+h-1)) return;
unsigned char* src_p = (unsigned char*) 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, j;
for (i = 0; i < h; ++i) {
unsigned char* spx = src_p;
unsigned char* dpx = dst_p;
for (j = 0; j < w; ++j) {
unsigned a = spx[3];
if (a == 0) {
spx += source->pixel_bytes;
dpx += gr_draw->pixel_bytes;
} else {
unsigned r5 = (((*spx++ & 0xFF) * 0x1F) + 0x7F) / 0xFF;
unsigned g5 = (((*spx++ & 0xFF) * 0x3F) + 0x7F) / 0xFF;
unsigned b5 = (((*spx++ & 0xFF) * 0x1F) + 0x7F) / 0xFF;
spx++;
if (a == 255) {
*dpx++ = (g5 << 5) + (b5);
*dpx++ = (r5 << 3) + (g5 >> 3);
} else {
blend_16bpp(dpx, r5, g5, b5, a);
spx += source->pixel_bytes;
}
}
}
src_p += source->row_bytes;
dst_p += gr_draw->row_bytes;
}
}
void gr_blit(const GRSurface* source, int sx, int sy, int w, int h, int dx, int dy) {
if (source == nullptr) return;
if (gr_draw->pixel_bytes != source->pixel_bytes) {
if (gr_draw->pixel_bytes == 2 && source->pixel_bytes == 4) {
gr_blit_32to16(source, sx, sy, w, h, dx, dy);
return;
} else {
printf("gr_blit: source has wrong format\n");
return;
}
}
dx += overscan_offset_x;
dy += overscan_offset_y;
if (outside(dx, dy) || outside(dx + w - 1, dy + h - 1)) return;
if (rotation != GRRotation::NONE) {
int src_row_pixels = source->row_bytes / source->pixel_bytes;
int row_pixels = gr_draw->row_bytes / gr_draw->pixel_bytes;
const uint32_t* src_py =
reinterpret_cast<const uint32_t*>(source->data()) + sy * source->row_bytes / 4 + sx;
uint32_t* dst_py = PixelAt(gr_draw, dx, dy, row_pixels);
for (int y = 0; y < h; y += 1) {
const uint32_t* src_px = src_py;
uint32_t* dst_px = dst_py;
for (int x = 0; x < w; x += 1) {
*dst_px = *src_px++;
incr_x(&dst_px, row_pixels);
}
src_py += src_row_pixels;
incr_y(&dst_py, row_pixels);
}
} else {
const uint8_t* src_p = source->data() + sy * source->row_bytes + sx * source->pixel_bytes;
uint8_t* dst_p = gr_draw->data() + dy * gr_draw->row_bytes + dx * gr_draw->pixel_bytes;
for (int 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(const GRSurface* surface) {
if (surface == nullptr) {
return 0;
}
return surface->width;
}
unsigned int gr_get_height(const GRSurface* surface) {
if (surface == nullptr) {
return 0;
}
return surface->height;
}
#ifdef TW_NO_MINUI_CUSTOM_FONTS
static void gr_init_font(void)
{
gr_font = reinterpret_cast<GRFont*>(calloc(sizeof(*gr_font), 1));
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
// top row is regular text; the bottom row is bold.
gr_font->char_width = gr_font->texture->width / 96;
gr_font->char_height = gr_font->texture->height / 2;
} else {
printf("failed to read font: res=%d\n", res);
// fall back to the compiled-in font.
gr_font->texture = reinterpret_cast<GRSurface*>(malloc(sizeof(*gr_font->texture)));
gr_font->texture->width = font.width;
gr_font->texture->height = font.height;
gr_font->texture->row_bytes = font.width;
gr_font->texture->pixel_bytes = 1;
unsigned char* bits = reinterpret_cast<unsigned char*>(malloc(font.width * font.height));
gr_font->texture->data = reinterpret_cast<unsigned char*>(bits);
unsigned char data;
unsigned char* in = font.rundata;
while((data = *in++)) {
memset(bits, (data & 0x80) ? 255 : 0, data & 0x7f);
bits += (data & 0x7f);
}
gr_font->char_width = font.char_width;
gr_font->char_height = font.char_height;
}
}
void gr_set_font(__attribute__ ((unused))const char* name) {
//this cm function is made to change font. Don't care, just init the font:
gr_init_font();
return;
}
#else // TW_NO_MINUI_CUSTOM_FONTS
int gr_init_font(const char* name, GRFont** dest) {
GRFont* font = static_cast<GRFont*>(calloc(1, sizeof(*gr_font)));
if (font == nullptr) {
return -1;
}
int res = res_create_alpha_surface(name, &(font->texture));
if (res < 0) {
free(font);
return res;
}
// The font image should be a 96x2 array of character images. The
// columns are the printable ASCII characters 0x20 - 0x7f. The
// top row is regular text; the bottom row is bold.
font->char_width = font->texture->width / 96;
font->char_height = font->texture->height / 2;
*dest = font;
return 0;
}
#endif // TW_NO_MINUI_CUSTOM_FONTS
void gr_flip() {
gr_draw = gr_backend->Flip();
}
std::unique_ptr<MinuiBackend> create_backend(GraphicsBackend backend) {
switch (backend) {
case GraphicsBackend::DRM:
return std::make_unique<MinuiBackendDrm>();
case GraphicsBackend::FBDEV:
return std::make_unique<MinuiBackendFbdev>();
default:
return nullptr;
}
}
int gr_init() {
return gr_init(default_backends);
}
int gr_init(std::initializer_list<GraphicsBackend> backends) {
// pixel_format needs to be set before loading any resources or initializing backends.
std::string format = android::base::GetProperty("ro.minui.pixel_format", "");
if (format == "ABGR_8888") {
pixel_format = PixelFormat::ABGR;
} else if (format == "RGBX_8888") {
pixel_format = PixelFormat::RGBX;
} else if (format == "ARGB_8888") {
pixel_format = PixelFormat::ARGB;
} else if (format == "BGRA_8888") {
pixel_format = PixelFormat::BGRA;
} else if (format == "RGBA_8888") {
pixel_format = PixelFormat::RGBA;
} else {
pixel_format = PixelFormat::UNKNOWN;
}
int ret = gr_init_font("font", &gr_font);
if (ret != 0) {
printf("Failed to init font: %d, continuing graphic backend initialization without font file\n",
ret);
}
auto backend = std::unique_ptr<MinuiBackend>{ std::make_unique<MinuiBackendDrm>() };
gr_draw = backend->Init();
#ifdef MSM_BSP
if (gr_draw) {
printf("Using overlay graphics.\n");
}
#endif
if (!gr_draw) {
backend = std::make_unique<MinuiBackendDrm>();
gr_draw = backend->Init();
if (gr_draw)
printf("Using drm graphics.\n");
}
if (!gr_draw) {
backend = std::make_unique<MinuiBackendFbdev>();
gr_draw = backend->Init();
if (gr_draw)
printf("Using fbdev graphics.\n");
}
if (!gr_draw) {
return -1;
}
int overscan_percent = android::base::GetIntProperty("ro.minui.overscan_percent", 0);
overscan_offset_x = gr_draw->width * overscan_percent / 100;
overscan_offset_y = gr_draw->height * overscan_percent / 100;
gr_flip();
gr_flip();
if (!gr_draw) {
printf("gr_init: gr_draw becomes nullptr after gr_flip\n");
return -1;
}
std::string rotation_str =
android::base::GetProperty("ro.minui.default_rotation", "ROTATION_NONE");
if (rotation_str == "ROTATION_RIGHT") {
gr_rotate(GRRotation::RIGHT);
} else if (rotation_str == "ROTATION_DOWN") {
gr_rotate(GRRotation::DOWN);
} else if (rotation_str == "ROTATION_LEFT") {
gr_rotate(GRRotation::LEFT);
} else { // "ROTATION_NONE" or unknown string
gr_rotate(GRRotation::NONE);
}
if (gr_draw->pixel_bytes != 4) {
printf("gr_init: Only 4-byte pixel formats supported\n");
}
return 0;
}
void gr_exit() {
delete gr_backend;
gr_backend = nullptr;
delete gr_font;
gr_font = nullptr;
}
int gr_fb_width() {
return (rotation == GRRotation::LEFT || rotation == GRRotation::RIGHT)
? gr_draw->height - 2 * overscan_offset_y
: gr_draw->width - 2 * overscan_offset_x;
}
int gr_fb_height() {
return (rotation == GRRotation::LEFT || rotation == GRRotation::RIGHT)
? gr_draw->width - 2 * overscan_offset_x
: gr_draw->height - 2 * overscan_offset_y;
}
void gr_fb_blank(bool blank) {
gr_backend->Blank(blank);
}
void gr_fb_blank(bool blank, int index) {
gr_backend->Blank(blank, static_cast<MinuiBackend::DrmConnector>(index));
}
void gr_rotate(GRRotation rot) {
rotation = rot;
}
bool gr_has_multiple_connectors() {
return gr_backend->HasMultipleConnectors();
}