Class: Audio::LiveOutputC

Inherits:
Object
  • Object
show all
Defined in:
ext/audio/output.c

Direct Known Subclasses

FileOutputC, LiveOutput

Defined Under Namespace

Classes: BadOption, DeviceData, DeviceError, DriverError, Error, NoDriver, NotFile, NotLive, UnknownError

Instance Method Summary collapse

Instance Method Details

#close ⇒ Object

device setup



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# File 'ext/audio/output.c', line 23

VALUE
rao_close(VALUE obj)
{
  ao_struct *aos;

  if (rb_iv_get(obj, "@device") == Qnil){
    return Qfalse;
  }

  Data_Get_Struct(rb_iv_get(obj, "@device"),
		  ao_struct, aos);
  close_device(aos);
  rb_ary_delete(rb_cv_get(cAO_Live, "@@devices"), rb_intern("@device"));
  /*rb_iv_set(obj, "@device", Qnil);*/
  return Qtrue;
}

#closed? ⇒ Boolean

デバイスが既に閉じられているか確認する。

return

true or false

Returns:

  • (Boolean) 


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# File 'ext/audio/device.c', line 154

VALUE
raodev_closed(VALUE obj)
{
  ao_struct *aos;
  Data_Get_Struct(rb_ivar_get(obj, rb_intern("@device")),
		  ao_struct, aos);
  if (aos->device == NULL){
    return Qtrue;
  }
  return Qfalse;
}

#play(output_samples) ⇒ Object

受け取ったサンプルを再生する。 threadが有効の場合、受け取ったサンプルを 再生キューに追加する。 (デバイスがファイル出力の場合はファイルに書き出す) 一度に渡せる量はunsigned int(32bit)の範囲まで。

arg1

buffer(String)

return

Fixnum



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# File 'ext/audio/device.c', line 54

VALUE
raodev_play(VALUE obj, VALUE output_samples)
{
  sample_t  *sample;
  ao_struct *aos;
  aos_gvl    aosg;

  Check_Type(output_samples, T_STRING);
  if (rb_ivar_get(obj, rb_intern("@device")) == Qnil){
    rb_raise(cAO_eAOError, "Device already closed.");
  }
  Data_Get_Struct(rb_ivar_get(obj, rb_intern("@device")),
		  ao_struct, aos);
  if ((sample = malloc(sizeof(sample_t))) == NULL){
    rb_raise(cAO_eAOError, "Memory allocation failure.");
  }
  sample->bytes = RSTRING_LENINT(output_samples);
  if ((sample->buffer = malloc(sample->bytes)) == NULL){
    rb_raise(cAO_eAOError, "Memory allocation failure.");
  }
  memcpy(sample->buffer, StringValuePtr(output_samples), sample->bytes);

  if (aos->thread == 1){
    enqueue(aos, sample);
  } else {
    aosg.aos = aos;
    aosg.sample = *sample;
#ifdef HAVE_RB_THREAD_CALL_WITHOUT_GVL
    rb_thread_call_without_gvl2(nogvl_ao_play, &aosg, NULL, NULL);
#else
    nogvl_ao_play(&aosg);
#endif
    free(sample->buffer);
  }
  return obj;
}

#playing? ⇒ Boolean

デバイスがオーディオを出力中か確認する。 (threadを有効にしていない場合、常にfalse)

return

true or false

Returns:

  • (Boolean) 


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# File 'ext/audio/device.c', line 173

VALUE
raodev_playing(VALUE obj)
{
  ao_struct *aos;
  Data_Get_Struct(rb_ivar_get(obj, rb_intern("@device")),
		  ao_struct, aos);
  if (aos->thread == 1 && aos->status == 2){
    return Qtrue;
  }
  return Qfalse;
}

#waiting ⇒ Object

再生キューの待ち数を返す。 (threadを有効にしていない場合、常に0)

return

Integer



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# File 'ext/audio/device.c', line 192

VALUE
raodev_waiting(VALUE obj)
{
  ao_struct *aos;
  Data_Get_Struct(rb_ivar_get(obj, rb_intern("@device")),
		  ao_struct, aos);
  return INT2FIX(aos->qsize);
}