public override bool Play()
{
if (!initialized)
return false;
var input = PlayList[currentIndex];
//Spec.callback = FillBuffer;
for (int i = 0; i < formats.Length; i++)
{
Spec.format = formats[i];
Spec.freq = input.Frequency;
Spec.channels = input.Channels;
Spec.silence = 255;
Spec.samples = Convert.ToUInt16(Math.Pow(2, 15) - 1);
Spec.size = 0;
try
{
currentDevice = SdlAudio.OpenAudioDevice(null, 0, ref Spec, out SdlAudioSpec obtained, (int)AudioAdjust.FORMAT_CHANGE);
if (currentDevice != 0)
{
Spec = obtained;
break;
}
}
catch { continue; }
}
opened = currentDevice != 0;
if (!opened)
return false;
SdlAudio.QueueAudio(currentDevice, input.data, input.length);
SdlAudio.PauseAudioDevice(currentDevice, 0);
return Loop;
}
//SDL_LoadWAV
protected static SdlAudioSpec LoadWAV(string file, ref SdlAudioSpec spec, out IntPtr audio_buf, out int audio_len)
{
SdlAudioSpec result;
IntPtr rwops = RWFromFile(file, "rb");
IntPtr result_ptr = loadWAV_RW(
rwops,
1,
ref spec,
out audio_buf,
out audio_len
);
result = result_ptr.ToStruct<SdlAudioSpec>();
return result;
}
static extern int openAudioDevice(byte[] device, int iscapture,
ref SdlAudioSpec desired, out SdlAudioSpec obtained, int allowed_changes);
//SDL_OpenAudioDevice
protected static int OpenAudioDevice(string device, int iscapture,
ref SdlAudioSpec desired, out SdlAudioSpec obtained, int allowed_changes) =>
openAudioDevice(Implementation.UTF8_ToNative(device), iscapture, ref desired, out obtained, allowed_changes);
static extern IntPtr loadWAV_RW(IntPtr src, int freesrc, ref SdlAudioSpec spec, out IntPtr audio_buf, out int audio_len);