mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-13 19:18:56 +00:00
141 lines
3.7 KiB
C
141 lines
3.7 KiB
C
/*
|
|
* This file is part of the Trezor project, https://trezor.io/
|
|
*
|
|
* Copyright (C) 2017 Saleem Rashid <trezor@saleemrashid.com>
|
|
*
|
|
* This library is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "oled.h"
|
|
|
|
#include <SDL.h>
|
|
|
|
static SDL_Renderer *renderer = NULL;
|
|
static SDL_Texture *texture = NULL;
|
|
static SDL_Rect dstrect;
|
|
|
|
#define ENV_OLED_FULLSCREEN "TREZOR_OLED_FULLSCREEN"
|
|
#define ENV_OLED_SCALE "TREZOR_OLED_SCALE"
|
|
|
|
static int emulatorFullscreen(void) {
|
|
const char *variable = getenv(ENV_OLED_FULLSCREEN);
|
|
if (!variable) {
|
|
return 0;
|
|
}
|
|
return atoi(variable);
|
|
}
|
|
|
|
static int emulatorScale(void) {
|
|
const char *variable = getenv(ENV_OLED_SCALE);
|
|
if (!variable) {
|
|
return 1;
|
|
}
|
|
int scale = atoi(variable);
|
|
if (scale >= 1 && scale <= 16) {
|
|
return scale;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void oledInit(void) {
|
|
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
|
|
fprintf(stderr, "Failed to initialize SDL: %s\n", SDL_GetError());
|
|
exit(1);
|
|
}
|
|
atexit(SDL_Quit);
|
|
|
|
int scale = emulatorScale();
|
|
int fullscreen = emulatorFullscreen();
|
|
|
|
SDL_Window *window = SDL_CreateWindow(
|
|
"Trezor^emu", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
|
|
OLED_WIDTH * scale, OLED_HEIGHT * scale,
|
|
fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
|
|
|
|
if (window == NULL) {
|
|
fprintf(stderr, "Failed to create window: %s\n", SDL_GetError());
|
|
exit(1);
|
|
}
|
|
|
|
renderer = SDL_CreateRenderer(window, -1, 0);
|
|
if (!renderer) {
|
|
fprintf(stderr, "Failed to create renderer: %s\n", SDL_GetError());
|
|
exit(1);
|
|
}
|
|
if (fullscreen) {
|
|
SDL_DisplayMode current_mode;
|
|
if (SDL_GetCurrentDisplayMode(0, ¤t_mode) != 0) {
|
|
fprintf(stderr, "Failed to get current display mode: %s\n",
|
|
SDL_GetError());
|
|
exit(1);
|
|
}
|
|
|
|
dstrect.x = (current_mode.w - OLED_WIDTH * scale) / 2;
|
|
dstrect.y = (current_mode.h - OLED_HEIGHT * scale) / 2;
|
|
|
|
SDL_SetRenderDrawColor(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
|
|
SDL_RenderClear(renderer);
|
|
SDL_ShowCursor(SDL_DISABLE);
|
|
} else {
|
|
dstrect.x = 0;
|
|
dstrect.y = 0;
|
|
}
|
|
|
|
dstrect.w = OLED_WIDTH * scale;
|
|
dstrect.h = OLED_HEIGHT * scale;
|
|
|
|
texture =
|
|
SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888,
|
|
SDL_TEXTUREACCESS_STREAMING, OLED_WIDTH, OLED_HEIGHT);
|
|
|
|
oledClear();
|
|
oledRefresh();
|
|
}
|
|
|
|
void oledRefresh(void) {
|
|
/* Draw triangle in upper right corner */
|
|
oledInvertDebugLink();
|
|
|
|
const uint8_t *buffer = oledGetBuffer();
|
|
|
|
static uint32_t data[OLED_HEIGHT][OLED_WIDTH];
|
|
|
|
for (size_t i = 0; i < OLED_BUFSIZE; i++) {
|
|
int x = (OLED_BUFSIZE - 1 - i) % OLED_WIDTH;
|
|
int y = (OLED_BUFSIZE - 1 - i) / OLED_WIDTH * 8 + 7;
|
|
|
|
for (uint8_t shift = 0; shift < 8; shift++, y--) {
|
|
bool set = (buffer[i] >> shift) & 1;
|
|
data[y][x] = set ? 0xFFFFFFFF : 0xFF000000;
|
|
}
|
|
}
|
|
|
|
SDL_UpdateTexture(texture, NULL, data, OLED_WIDTH * sizeof(uint32_t));
|
|
SDL_RenderCopy(renderer, texture, NULL, &dstrect);
|
|
SDL_RenderPresent(renderer);
|
|
|
|
/* Return it back */
|
|
oledInvertDebugLink();
|
|
}
|
|
|
|
void emulatorPoll(void) {
|
|
SDL_Event event;
|
|
|
|
if (SDL_PollEvent(&event)) {
|
|
if (event.type == SDL_QUIT) {
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|