Initial commit

.gitignore

@@ -0,0 +1,2 @@
+/build/sdlamp2
+/build/sdlamp2.dSYM

build.sh

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+#!/bin/sh
+
+pushd build
+gcc -o sdlamp2 -Wall -O0 -ggdb3 ../src/sdlamp2.c `sdl2-config --cflags --libs`
+popd

src/sdlamp2.c

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+#include "SDL.h"
+
+static SDL_AudioDeviceID audio_device = 0;
+static SDL_Window *window = NULL;
+static SDL_Renderer *renderer = NULL;
+
+static void panic_and_abort(const char *title, const char *text) {
+  fprintf(stderr, "PANIC: %s ... %s\n", title, text);
+  SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, title, text, window);
+  SDL_Quit();
+  exit(1);
+}
+
+int main(int argc, char **argv) {
+  Uint8 *wavbuf = NULL;
+  Uint32 wavlen = 0;
+  SDL_AudioSpec wavspec;
+
+  if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) != 0) {
+    panic_and_abort("SDL_Init failed!", SDL_GetError());
+  }
+
+  window = SDL_CreateWindow("SDLamp2", SDL_WINDOWPOS_UNDEFINED,
+                            SDL_WINDOWPOS_UNDEFINED, 640, 480, 0);
+  if (!window) {
+    panic_and_abort("SDL_CreateWindow failed!", SDL_GetError());
+  }
+
+  renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC);
+  if (!renderer) {
+    panic_and_abort("SDL_CreateRenderer failed!", SDL_GetError());
+  }
+
+  if (SDL_LoadWAV("music.wav", &wavspec, &wavbuf, &wavlen) == NULL) {
+    panic_and_abort("Couldn't load wav file!", SDL_GetError());
+  }
+  audio_device = SDL_OpenAudioDevice(NULL, 0, &wavspec, NULL, 0);
+  if (audio_device == 0) {
+    panic_and_abort("Could not open audio device!", SDL_GetError());
+  }
+  SDL_QueueAudio(audio_device, wavbuf, wavlen);
+
+  SDL_bool paused = SDL_TRUE;
+  const SDL_Rect rewind_rect = {100, 100, 100, 100};
+  const SDL_Rect pause_rect = {400, 100, 100, 100};
+
+  SDL_bool running = SDL_TRUE;
+  SDL_Event e;
+
+  while (running) {
+    while (SDL_PollEvent(&e)) {
+      switch (e.type) {
+      case SDL_QUIT:
+        running = SDL_FALSE;
+        break;
+
+      case SDL_MOUSEBUTTONDOWN: {
+        const SDL_Point pt = {e.button.x, e.button.y};
+        if (SDL_PointInRect(&pt, &rewind_rect)) {
+          SDL_ClearQueuedAudio(audio_device);
+          SDL_QueueAudio(audio_device, wavbuf, wavlen);
+        } else if (SDL_PointInRect(&pt, &pause_rect)) {
+          paused = paused ? SDL_FALSE : SDL_TRUE;
+          SDL_PauseAudioDevice(audio_device, paused);
+        }
+        break;
+      }
+      }
+    }
+
+    SDL_SetRenderDrawColor(renderer, 0, 0xFF, 0, 0xFF);
+    SDL_RenderClear(renderer);
+
+    SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
+    SDL_RenderFillRect(renderer, &rewind_rect);
+    SDL_RenderFillRect(renderer, &pause_rect);
+
+    SDL_RenderPresent(renderer);
+  }
+
+  SDL_FreeWAV(wavbuf);
+  SDL_CloseAudioDevice(audio_device);
+  SDL_DestroyRenderer(renderer);
+  SDL_DestroyWindow(window);
+  SDL_Quit();
+
+  return 0;
+}