111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
/*
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* Copyright (c) 2018 Jan Van Winkel <jan.van_winkel@dxplore.eu>
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* Copyright (c) 2023 Nordic Semiconductor
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <SDL.h>
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#include "nsi_tracing.h"
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int sdl_display_init_bottom(uint16_t height, uint16_t width, uint16_t zoom_pct,
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void **window, void **renderer, void **texture)
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{
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*window = SDL_CreateWindow("Zephyr Display", SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED, width * zoom_pct / 100,
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height * zoom_pct / 100, SDL_WINDOW_SHOWN);
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if (*window == NULL) {
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nsi_print_warning("Failed to create SDL window: %s", SDL_GetError());
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return -1;
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}
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*renderer = SDL_CreateRenderer(*window, -1, SDL_RENDERER_ACCELERATED);
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if (*renderer == NULL) {
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nsi_print_warning("Failed to create SDL renderer: %s",
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SDL_GetError());
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return -1;
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}
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*texture = SDL_CreateTexture(*renderer, SDL_PIXELFORMAT_ARGB8888,
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SDL_TEXTUREACCESS_STATIC, width, height);
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if (*texture == NULL) {
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nsi_print_warning("Failed to create SDL texture: %s", SDL_GetError());
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return -1;
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}
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SDL_SetRenderDrawColor(*renderer, 0, 0, 0, 0xFF);
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SDL_RenderClear(*renderer);
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SDL_RenderPresent(*renderer);
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return 0;
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}
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void sdl_display_write_bottom(const uint16_t height, const uint16_t width,
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const uint16_t x, const uint16_t y,
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void *renderer, void *texture,
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uint8_t *buf, bool display_on)
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{
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SDL_Rect rect;
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rect.x = x;
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rect.y = y;
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rect.w = width;
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rect.h = height;
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SDL_UpdateTexture(texture, &rect, buf, 4 * rect.w);
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if (display_on) {
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SDL_RenderClear(renderer);
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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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}
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int sdl_display_read_bottom(const uint16_t height, const uint16_t width,
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const uint16_t x, const uint16_t y,
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void *renderer, void *buf, uint16_t pitch)
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{
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SDL_Rect rect;
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rect.x = x;
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rect.y = y;
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rect.w = width;
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rect.h = height;
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return SDL_RenderReadPixels(renderer, &rect, 0, buf, pitch * 4U);
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}
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void sdl_display_blanking_off_bottom(void *renderer, void *texture)
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{
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SDL_RenderClear(renderer);
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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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void sdl_display_blanking_on_bottom(void *renderer)
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{
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SDL_RenderClear(renderer);
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SDL_RenderPresent(renderer);
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}
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void sdl_display_cleanup_bottom(void **window, void **renderer, void **texture)
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{
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if (*texture != NULL) {
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SDL_DestroyTexture(*texture);
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*texture = NULL;
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}
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if (*renderer != NULL) {
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SDL_DestroyRenderer(*renderer);
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*renderer = NULL;
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}
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if (*window != NULL) {
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SDL_DestroyWindow(*window);
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*window = NULL;
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}
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}
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