version 0.1 inicial para empezar a rodar

makefile

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+CC := gcc
+CFLAGS := -Wall
+LINKER_FLAGS = `sdl2-config --cflags --libs` -lxmp -lSDL2_image
+
+test:
+	make clean
+	make build
+
+build:
+	$(CC) $(CFLAGS) -o presentator presentator.c $(LINKER_FLAGS)
+
+run:
+	./presentator
+
+clean:
+	-rm presentator

presentator.c

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+#include <SDL.h>
+#include <xmp.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <SDL_image.h>
+
+// Fanta <fanta@56k.es> 2026
+// Presentator 0.1
+
+// Variables
+int modPlaying;
+char * modName = NULL;
+int modVolume = 100;
+int iv;
+char *imgVol[] = {"res/vol100.png","res/vol090.png","res/vol080.png","res/vol070.png","res/vol060.png","res/vol050.png","res/vol040.png","res/vol030.png","res/vol020.png","res/vol010.png","res/vol000.png"};
+char windowTitle[16] = "Presentator 0.1";
+int windowWidth = 1024;
+int windowHeight = 768;
+char * slidesIndex = "slides/index.txt";
+char * actualSlide = NULL;
+int actualNSlide = 1;
+bool quit = false;
+SDL_Window * window;
+SDL_Renderer * render;
+SDL_Texture *textureVolume = NULL;
+SDL_Texture *textureSlide = NULL;
+SDL_Event evento;
+xmp_context ctx;
+
+// Functions
+int createWindow(void){
+	SDL_Init(SDL_INIT_VIDEO);
+	window = SDL_CreateWindow(windowTitle,SDL_WINDOWPOS_UNDEFINED,SDL_WINDOWPOS_UNDEFINED,windowWidth,windowHeight,SDL_WINDOW_FULLSCREEN);
+	render = SDL_CreateRenderer(window, -1, 0);
+	return 0;
+}
+
+int refreshVolumeArea(int iv){
+	SDL_Rect textureVolumeRect1 = { 0, 0, 398, 68 };
+	SDL_Rect textureVolumeRect2 = { 910, 20, 100, 20 };
+	IMG_Init(IMG_INIT_PNG);
+    textureVolume = IMG_LoadTexture(render, imgVol[iv]);
+	SDL_RenderCopy(render, textureVolume, &textureVolumeRect1, &textureVolumeRect2);
+    return 0;
+}
+
+static void playBuffer(void *udata, Uint8 *stream, int len)
+{
+  if (xmp_play_buffer((xmp_context)udata, stream, len, 0) < 0){ modPlaying = 0; }
+}
+
+static int initAudio(xmp_context ctx) {
+	SDL_AudioSpec a;
+	a.freq = 44100;
+	a.format = AUDIO_S16;
+	a.channels = 2;
+	a.samples = 2048;
+	a.callback = playBuffer;
+	a.userdata = ctx;
+	if (SDL_OpenAudio(&a, NULL) < 0) { printf("error inicializando audio: %s\n", SDL_GetError());	return 1; }
+	return 0;
+}
+
+void loadMod(char *modPath){
+	modName = modPath;
+	ctx = xmp_create_context();
+	xmp_load_module(ctx, modName);
+	xmp_start_player(ctx, 44100, 0);
+	xmp_set_player(ctx, XMP_PLAYER_VOLUME, modVolume);
+	initAudio(ctx);
+	modPlaying = 1;
+	SDL_PauseAudio(0);
+}
+
+int stopMod(void){
+	xmp_end_player(ctx);
+	xmp_free_context(ctx);
+	SDL_CloseAudio();
+	return 0;
+}
+
+int loadSlide(int nslide){
+	FILE * fp;
+    char * line = NULL;
+    size_t len = 0;
+    int nline = 1;
+    ssize_t read;
+
+    fp = fopen(slidesIndex, "r");
+    while ((read = getline(&line, &len, fp)) != -1) {
+		if (nslide == nline){
+			actualSlide = line;
+			actualSlide[ strlen(actualSlide) - 1 ] = '\0';
+			SDL_Rect textureSlideRect = { 0, 0, windowWidth, windowHeight };
+			IMG_Init(IMG_INIT_PNG);
+			textureSlide = IMG_LoadTexture(render, actualSlide);
+			SDL_RenderCopy(render, textureSlide, NULL, &textureSlideRect);
+		}
+		nline = nline +1;
+    }
+    fclose(fp);
+    if (line){ free(line); };
+	return 0;
+}
+
+int renderAll(void){
+	loadSlide(actualNSlide);
+	refreshVolumeArea(iv);
+	SDL_RenderPresent(render);
+	return 0;
+}
+
+// Main
+int main(int argc, char ** argv) {
+	createWindow();
+	loadMod("mods/001.mod");
+	loadSlide(1);
+	refreshVolumeArea(0);
+	SDL_RenderPresent(render);
+
+	while (!quit) {
+		SDL_WaitEvent(&evento);
+
+		switch (evento.type) {
+			case SDL_KEYDOWN:
+				switch (evento.key.keysym.sym) {
+					case SDLK_q:
+						stopMod();
+						quit = true;
+						break;
+					case SDLK_DOWN:
+						if(modVolume > 0) {
+							modVolume = modVolume - 10;
+							xmp_set_player(ctx, XMP_PLAYER_VOLUME, modVolume);
+							iv = iv + 1;
+							renderAll();
+						}
+						break;
+					case SDLK_UP:
+						if(modVolume < 100) {
+							modVolume = modVolume + 10;
+							xmp_set_player(ctx, XMP_PLAYER_VOLUME, modVolume);
+							iv = iv - 1;
+							renderAll();
+						}
+						break;
+					case SDLK_1:
+						stopMod();
+						loadMod("mods/001.mod");
+						break;
+					case SDLK_2:
+						stopMod();
+						loadMod("mods/002.mod");
+						break;
+					case SDLK_3:
+						stopMod();
+						loadMod("mods/003.xm");
+						break;
+					case SDLK_4:
+						stopMod();
+						loadMod("mods/004.xm");
+						break;
+					case SDLK_5:
+						stopMod();
+						loadMod("mods/005.mod");
+						break;
+					case SDLK_6:
+						stopMod();
+						loadMod("mods/006.mod");
+						break;
+					case SDLK_7:
+						stopMod();
+						loadMod("mods/007.mod");
+						break;
+					case SDLK_8:
+						stopMod();
+						loadMod("mods/008.mod");
+						break;
+					case SDLK_9:
+						stopMod();
+						loadMod("mods/009.mod");
+						break;
+					case SDLK_RIGHT:
+					    actualNSlide = actualNSlide + 1;
+					    renderAll();
+						break;
+					case SDLK_LEFT:
+					    actualNSlide = actualNSlide - 1;
+						renderAll();
+						break;
+				}
+				break;
+		}
+
+
+	}
+
+}

slides/index.txt

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+slides/001.png
+slides/002.png
+slides/003.png
+slides/004.png

todo.txt

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+- Añadir opción para abrir en ventana como parametro.
+window = SDL_CreateWindow(windowTitle,SDL_WINDOWPOS_UNDEFINED,SDL_WINDOWPOS_UNDEFINED,windowWidth,windowHeight,SDL_WINDOW_OPENGL);
+
+