Class: SDL::Audio

Inherits:

Data

• Object
• Data
• SDL::Audio

Defined in:

ext/sdl/sdl.c

Class Method Summary

• .load(path) ⇒ Object
• .open(n_channels) ⇒ Object

  // SDL::Audio methods:.

Instance Method Summary

• #play ⇒ Object

Class Method Details

.load(path) ⇒ Object

# File 'ext/sdl/sdl.c', line 195

static VALUE Audio_s_load(VALUE self, VALUE path) {
  UNUSED(self);
  ExportStringValue(path);

  Mix_Chunk *chunk = Mix_LoadWAV(RSTRING_PTR(path));

  if (!chunk)
    AUDIO_FAILURE("Audio.load");

  return TypedData_Wrap_Struct(cAudio, &_Audio_type, chunk);
}

.open(n_channels) ⇒ Object

// SDL::Audio methods:

# File 'ext/sdl/sdl.c', line 180

static VALUE Audio_s_open(VALUE self, VALUE n_channels) {
  UNUSED(self);
  int n = NUM2INT(n_channels);

  // TODO: int Mix_Init(MIX_INIT_MP3) ?

  if (Mix_QuerySpec(NULL, NULL, NULL))
    return Qnil; // TODO: raise?

  if (Mix_OpenAudio(22050, MIX_DEFAULT_FORMAT, 2, 4096))
    AUDIO_FAILURE("SDL::Audio.open");

  return INT2FIX(Mix_AllocateChannels(n));
}

Instance Method Details

#play ⇒ Object

# File 'ext/sdl/sdl.c', line 207

static VALUE Audio_play(VALUE self) {
  DEFINE_SELF(Audio, audio, self);

  if (Mix_PlayChannel(-1, audio, 0) < 0)
    AUDIO_FAILURE("Audio#play");

  return Qnil;
}