void osd_sound_enable(int enable_it)
{
#ifdef USE_SEAL
if (enable_it)
ASetAudioMixerValue(AUDIO_MIXER_MASTER_VOLUME,master_volume);
else
ASetAudioMixerValue(AUDIO_MIXER_MASTER_VOLUME,0);
#endif
#ifdef USE_ALLEGRO
if (enable_it)
set_volume(255,0);
else
set_volume(0,0);
#endif
}
// Initialize Sound Card ------------------------------------------------------
static int Sound_Init_SoundCard (void)
{
int i;
AUDIOINFO Audio_Infos;
ConsolePrintf (Msg_Get (MSG_Sound_Init_Soundcard), Sound.SampleRate);
ConsolePrint ("\n");
Audio_Infos.nDeviceId = Sound.SoundCard;
Audio_Infos.wFormat = AUDIO_FORMAT_16BITS | AUDIO_FORMAT_STEREO; // FIXME: Stereo ?
Audio_Infos.nSampleRate = audio_sample_rate = Sound.SampleRate;
if (AOpenAudio(&Audio_Infos) != AUDIO_ERROR_NONE)
{
Quit_Msg ("%s", Msg_Get (MSG_Sound_Init_Error_Audio));
return (MEKA_ERR_FAIL);
}
// FIXME: original sound engine was trying different sample rate on failure
// Unused
// Maybe it was intended to check out number of channels there ?
// AGetAudioCaps (Audio_Infos.nDeviceId, &Audio_Caps);
// Open voices
if (AOpenVoices(Sound.Voices_Max) != AUDIO_ERROR_NONE)
{
Quit_Msg ("%s", Msg_Get (MSG_Sound_Init_Error_Voices));
return (MEKA_ERR_FAIL);
}
ASetAudioMixerValue (AUDIO_MIXER_MASTER_VOLUME, 256);
// Allocate voices and waveforms
Sound.Voices = Memory_Alloc (sizeof (t_voice) * Sound.Voices_Max);
for (i = 0; i < Sound.Voices_Max; i++)
{
if (ACreateAudioVoice(&Sound.Voices[i].hVoice) != AUDIO_ERROR_NONE)
{
Quit_Msg (Msg_Get (MSG_Sound_Init_Error_Voice_N), i);
return (MEKA_ERR_FAIL);
}
ASetVoicePanning(Sound.Voices[i].hVoice, 128); // Center voice
Sound.Voices[i].lpWave = NULL;
Sound.Voices[i].playing = FALSE;
}
// FIXME: is this needed ?
AUpdateAudio ();
// FIXME: is this needed ?
// Check frame sample rate
audio_sample_rate = nominal_sample_rate = Audio_Infos.nSampleRate;
return (MEKA_ERR_OK);
}
/* attenuation in dB */
void osd_set_mastervolume(int _attenuation)
{
float volume;
attenuation = _attenuation;
volume = 256.0; /* range is 0-256 */
while (_attenuation++ < 0)
volume /= 1.122018454; /* = (10 ^ (1/20)) = 1dB */
master_volume = volume;
ASetAudioMixerValue(AUDIO_MIXER_MASTER_VOLUME,master_volume);
}
/* attenuation in dB */
void osd_set_mastervolume(int _attenuation)
{
float volume;
if (_attenuation > 0) _attenuation = 0;
if (_attenuation < -32) _attenuation = -32;
attenuation = _attenuation;
volume = 256.0; /* range is 0-256 */
while (_attenuation++ < 0)
volume /= 1.122018454; /* = (10 ^ (1/20)) = 1dB */
master_volume = volume;
#ifdef USE_SEAL
ASetAudioMixerValue(AUDIO_MIXER_MASTER_VOLUME,master_volume);
#endif
}
