From a5080482112847588b1817f2645cc93d429b2a65 Mon Sep 17 00:00:00 2001
From: Abdelrahman <said.abdelrahman89@gmail.com>
Date: Sat, 4 May 2024 19:15:34 +0100
Subject: [PATCH] Display loaded TIFF in SDL window
---
src/main.c | 214 ++++++++++++++++++++++++++++-------------------------
1 file changed, 113 insertions(+), 101 deletions(-)
diff --git a/src/main.c b/src/main.c
index fef9520..253c45c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -30,6 +30,8 @@ struct point {
};
Point point_from_index(u32 index, u32 w);
+void write_debug_ppm6(const Image *img);
+SDL_Texture *image_to_texture(SDL_Renderer *renderer, const Image *img);
int main(int argc, char *argv[]) {
int exit_code = EXIT_SUCCESS;
@@ -47,6 +49,91 @@ int main(int argc, char *argv[]) {
goto MAIN_DESTROY_ARENA;
}
+ write_debug_ppm6(img);
+
+ if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
+ exit_code = EXIT_FAILURE;
+ goto MAIN_DESTROY_ARENA;
+ };
+
+ SDL_Window *window =
+ SDL_CreateWindow("Window", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
+ WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_SHOWN);
+ if (!window) {
+ exit_code = EXIT_FAILURE;
+ goto MAIN_QUIT_SDL;
+ }
+
+ SDL_Renderer *renderer = SDL_CreateRenderer(
+ window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
+ if (!renderer) {
+ exit_code = EXIT_FAILURE;
+ goto MAIN_DESTROY_WINDOW;
+ }
+
+ SDL_Texture *texture = image_to_texture(renderer, img);
+ if (!texture) {
+ exit_code = EXIT_FAILURE;
+ goto MAIN_DESTROY_RENDERER;
+ }
+
+ SDL_Rect dest = {
+ .h = img->height,
+ .w = img->width,
+ .x = (WINDOW_WIDTH - img->width) / 2,
+ .y = (WINDOW_HEIGHT - img->height) / 2,
+ };
+
+ bool running = true;
+
+ SDL_Event event = {0};
+
+ while (running) {
+ while (SDL_PollEvent(&event)) {
+ switch (event.type) {
+ case SDL_QUIT:
+ running = false;
+ break;
+ }
+ }
+
+ SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
+
+ SDL_RenderClear(renderer);
+
+ SDL_RenderCopy(renderer, texture, NULL, &dest);
+
+ SDL_RenderPresent(renderer);
+ }
+
+ SDL_DestroyTexture(texture);
+
+MAIN_DESTROY_RENDERER:
+ SDL_DestroyRenderer(renderer);
+
+MAIN_DESTROY_WINDOW:
+ SDL_DestroyWindow(window);
+
+MAIN_QUIT_SDL:
+ SDL_Quit();
+
+MAIN_DESTROY_ARENA:
+ wapp_mem_arena_destroy(&arena);
+
+ return exit_code;
+}
+
+Point point_from_index(u32 index, u32 w) {
+ Point out = {0};
+
+ out.x = index % w;
+
+ out.y = (index - (index % w)) / w;
+
+ return out;
+}
+
+void write_debug_ppm6(const Image *img) {
FILE *out = fopen("test.ppm", "wb");
char magic[] = {'P', '6', '\n'};
@@ -65,110 +152,35 @@ int main(int argc, char *argv[]) {
}
fclose(out);
-
- // if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
- // exit_code = EXIT_FAILURE;
- // goto MAIN_FREE_CONTEXT;
- // };
-
- // SDL_Window *window =
- // SDL_CreateWindow("Window", SDL_WINDOWPOS_CENTERED,
- // SDL_WINDOWPOS_CENTERED,
- // WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_SHOWN);
- // if (!window) {
- // exit_code = EXIT_FAILURE;
- // goto MAIN_QUIT_SDL;
- // }
-
- // SDL_Renderer *renderer = SDL_CreateRenderer(
- // window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
- // if (!renderer) {
- // exit_code = EXIT_FAILURE;
- // goto MAIN_DESTROY_WINDOW;
- // }
-
- // SDL_Surface *surface = SDL_CreateRGBSurface(0, img->width, img->height, 32,
- // RMASK, GMASK, BMASK, AMASK);
- // if (!surface) {
- // exit_code = EXIT_FAILURE;
- // goto MAIN_DESTROY_RENDERER;
- // }
-
- // uint64_t surface_length = surface->h * surface->pitch;
- // printf("%lu\n", surface_length);
- // printf("%u\n", surface->w * surface->h);
-
- // SDL_LockSurface(surface);
- // u64 position = 0;
- // for (u64 i = 0; i < surface_length; i += surface->pitch) {
- // memcpy(&(((u32 *)surface->pixels)[i]), &(img->data[position]),
- // surface->pitch / sizeof(Pixel));
-
- // position += surface->pitch;
- // }
- // SDL_UnlockSurface(surface);
-
- // SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer, surface);
- // if (!texture) {
- // exit_code = EXIT_FAILURE;
- // goto MAIN_DESTROY_SURFACE;
- // }
-
- // SDL_Rect dest = {
- // .w = surface->w,
- // .h = surface->h,
- // .x = (WINDOW_WIDTH - surface->w) / 2,
- // .y = (WINDOW_HEIGHT - surface->h) / 2,
- // };
-
- // bool running = true;
-
- // SDL_Event event = {0};
-
- // while (running) {
- // while (SDL_PollEvent(&event)) {
- // switch (event.type) {
- // case SDL_QUIT:
- // running = false;
- // break;
- // }
- // }
-
- // SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
-
- // SDL_RenderClear(renderer);
-
- // SDL_RenderCopy(renderer, texture, NULL, &dest);
-
- // SDL_RenderPresent(renderer);
- // }
-
- // SDL_DestroyTexture(texture);
-
- // MAIN_DESTROY_SURFACE:
- // SDL_FreeSurface(surface);
-
- // MAIN_DESTROY_RENDERER:
- // SDL_DestroyRenderer(renderer);
-
- // MAIN_DESTROY_WINDOW:
- // SDL_DestroyWindow(window);
-
- // MAIN_QUIT_SDL:
- // SDL_Quit();
-
-MAIN_DESTROY_ARENA:
- wapp_mem_arena_destroy(&arena);
-
- return exit_code;
}
-Point point_from_index(u32 index, u32 w) {
- Point out = {0};
+SDL_Texture *image_to_texture(SDL_Renderer *renderer, const Image *img) {
+ SDL_Texture *output = NULL;
+ if (!renderer || !img) {
+ goto IMAGE_TO_TEXTURE_RETURN;
+ }
- out.x = index % w;
+ SDL_Surface *surface = SDL_CreateRGBSurface(0, img->width, img->height, 32,
+ RMASK, GMASK, BMASK, AMASK);
+ if (!surface) {
+ goto IMAGE_TO_TEXTURE_RETURN;
+ }
- out.y = (index - (index % w)) / w;
+ SDL_LockSurface(surface);
+ u64 position = 0;
+ for (u64 i = 0; i < img->pixel_count; i += surface->w) {
+ void *start = (void *)((uptr)(surface->pixels) + position);
- return out;
+ memcpy(start, &(img->data[i]), surface->w * sizeof(Pixel));
+
+ position += surface->pitch;
+ }
+ SDL_UnlockSurface(surface);
+
+ output = SDL_CreateTextureFromSurface(renderer, surface);
+
+ SDL_FreeSurface(surface);
+
+IMAGE_TO_TEXTURE_RETURN:
+ return output;
}