70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
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/*
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* Copyright (c) Pavol Rusnak, SatoshiLabs
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*
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* Licensed under Microsoft Reference Source License (Ms-RSL)
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* see LICENSE.md file for details
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*/
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#include <SDL2/SDL.h>
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static int SDL_inited = 0;
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static SDL_Renderer *RENDERER = 0;
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static SDL_Surface *SCREEN = 0;
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static SDL_Texture *TEXTURE = 0;
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static int DATAODD = 0;
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static int POSX, POSY, SX, SY, EX, EY = 0;
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static void DATA(uint8_t x) {
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if (!SDL_inited) return;
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if (POSX <= EX && POSY <= EY) {
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((uint8_t *)SCREEN->pixels)[POSX * 2 + POSY * SCREEN->pitch + (DATAODD ^ 1)] = x;
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}
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DATAODD = !DATAODD;
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if (DATAODD == 0) {
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POSX++;
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if (POSX > EX) {
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POSX = SX;
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POSY++;
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}
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}
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}
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static void display_init(void)
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{
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if (SDL_inited) return;
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if (SDL_Init(SDL_INIT_VIDEO) != 0) {
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printf("SDL_Init Error: %s\n", SDL_GetError());
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}
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SDL_Window *win = SDL_CreateWindow("TREZOR", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, RESX, RESY, SDL_WINDOW_SHOWN);
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if (!win) {
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printf("SDL_CreateWindow Error: %s\n", SDL_GetError());
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SDL_Quit();
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}
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RENDERER = SDL_CreateRenderer(win, -1, SDL_RENDERER_SOFTWARE);
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if (!RENDERER) {
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printf("SDL_CreateRenderer Error: %s\n", SDL_GetError());
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SDL_DestroyWindow(win);
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SDL_Quit();
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}
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SDL_RenderClear(RENDERER);
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SCREEN = SDL_CreateRGBSurface(0, RESX, RESY, 16, 0xF800, 0x07E0, 0x001F, 0x0000);
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TEXTURE = SDL_CreateTexture(RENDERER, SDL_PIXELFORMAT_RGB565, SDL_TEXTUREACCESS_STREAMING, RESX, RESY);
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SDL_inited = 1;
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}
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static void display_set_window(uint8_t x, uint8_t y, uint8_t w, uint8_t h) {
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if (!SDL_inited) return;
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SX = x; SY = y;
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EX = x + w - 1; EY = y + h - 1;
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POSX = SX; POSY = SY;
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DATAODD = 0;
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}
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static void display_update(void)
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{
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if (!SDL_inited) return;
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SDL_UpdateTexture(TEXTURE, NULL, SCREEN->pixels, SCREEN->pitch);
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SDL_RenderCopy(RENDERER, TEXTURE, NULL, NULL);
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SDL_RenderPresent(RENDERER);
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}
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