public AudioEngine(
string settingsFile,
TimeSpan lookAheadTime,
string rendererId
)
{
if (String.IsNullOrEmpty(settingsFile))
{
throw new ArgumentNullException("settingsFile");
}
// Read entire file into memory, pin buffer
buffer = TitleContainer.ReadAllBytes(settingsFile);
pin = GCHandle.Alloc(buffer, GCHandleType.Pinned);
// Generate engine parameters
FAudio.FACTRuntimeParameters settings = new FAudio.FACTRuntimeParameters();
settings.pGlobalSettingsBuffer = pin.AddrOfPinnedObject();
settings.globalSettingsBufferSize = (uint)buffer.Length;
xactNotificationFunc = OnXACTNotification;
settings.fnNotificationCallback = Marshal.GetFunctionPointerForDelegate(
xactNotificationFunc
);
// Special parameters from constructor
settings.lookAheadTime = (uint)lookAheadTime.Milliseconds;
if (!string.IsNullOrEmpty(rendererId))
{
// FIXME: wchar_t? -flibit
settings.pRendererID = Marshal.StringToHGlobalAuto(rendererId);
}
// Init engine, finally
FAudio.FACTCreateEngine(0, out handle);
if (FAudio.FACTAudioEngine_Initialize(handle, ref settings) != 0)
{
throw new InvalidOperationException(
"Engine initialization failed!"
);
}
// Free the settings strings
if (settings.pRendererID != IntPtr.Zero)
{
Marshal.FreeHGlobal(settings.pRendererID);
}
// Grab RendererDetails
ushort rendererCount;
FAudio.FACTAudioEngine_GetRendererCount(
handle,
out rendererCount
);
if (rendererCount == 0)
{
Dispose();
throw new NoAudioHardwareException();
}
rendererDetails = new RendererDetail[rendererCount];
char[] displayName = new char[0xFF];
char[] rendererID = new char[0xFF];
for (ushort i = 0; i < rendererCount; i += 1)
{
FAudio.FACTRendererDetails details;
FAudio.FACTAudioEngine_GetRendererDetails(
handle,
i,
out details
);
unsafe
{
for (int j = 0; j < 0xFF; j += 1)
{
displayName[j] = (char)details.displayName[j];
rendererID[j] = (char)details.rendererID[j];
}
}
rendererDetails[i] = new RendererDetail(
new string(displayName),
new string(rendererID)
);
}
// Init 3D audio
handle3D = new byte[FAudio.F3DAUDIO_HANDLE_BYTESIZE];
FAudio.FACT3DInitialize(
handle,
handle3D
);
// Grab channel count for DSP_SETTINGS
FAudio.FAudioWaveFormatExtensible mixFormat;
FAudio.FACTAudioEngine_GetFinalMixFormat(
handle,
out mixFormat
);
channels = mixFormat.Format.nChannels;
// All XACT references have to go through here...
notificationDesc = new FAudio.FACTNotificationDescription();
}
public AudioEngine(
string settingsFile,
TimeSpan lookAheadTime,
string rendererId
)
{
if (String.IsNullOrEmpty(settingsFile))
{
throw new ArgumentNullException("settingsFile");
}
// Allocate (but don't initialize just yet!)
FAudio.FACTCreateEngine(0, out handle);
// Grab RendererDetails
ushort rendererCount;
FAudio.FACTAudioEngine_GetRendererCount(
handle,
out rendererCount
);
if (rendererCount == 0)
{
FAudio.FACTAudioEngine_Release(handle);
throw new NoAudioHardwareException();
}
rendererDetails = new RendererDetail[rendererCount];
byte[] converted = new byte[0xFF * sizeof(short)];
for (ushort i = 0; i < rendererCount; i += 1)
{
FAudio.FACTRendererDetails details;
FAudio.FACTAudioEngine_GetRendererDetails(
handle,
i,
out details
);
unsafe
{
Marshal.Copy((IntPtr)details.displayName, converted, 0, converted.Length);
string name = System.Text.Encoding.Unicode.GetString(converted).TrimEnd('\0');
Marshal.Copy((IntPtr)details.rendererID, converted, 0, converted.Length);
string id = System.Text.Encoding.Unicode.GetString(converted).TrimEnd('\0');
rendererDetails[i] = new RendererDetail(name, id);
}
}
// Read entire file into memory, let FACT manage the pointer
IntPtr bufferLen;
IntPtr buffer = TitleContainer.ReadToPointer(settingsFile, out bufferLen);
// Generate engine parameters
FAudio.FACTRuntimeParameters settings = new FAudio.FACTRuntimeParameters();
settings.pGlobalSettingsBuffer = buffer;
settings.globalSettingsBufferSize = (uint)bufferLen;
settings.globalSettingsFlags = FAudio.FACT_FLAG_MANAGEDATA;
xactNotificationFunc = OnXACTNotification;
settings.fnNotificationCallback = Marshal.GetFunctionPointerForDelegate(
xactNotificationFunc
);
// Special parameters from constructor
settings.lookAheadTime = (uint)lookAheadTime.Milliseconds;
if (!string.IsNullOrEmpty(rendererId))
{
// FIXME: wchar_t? -flibit
settings.pRendererID = Marshal.StringToHGlobalAuto(rendererId);
}
// Init engine, finally
if (FAudio.FACTAudioEngine_Initialize(handle, ref settings) != 0)
{
throw new InvalidOperationException(
"Engine initialization failed!"
);
}
// Free the settings strings
if (settings.pRendererID != IntPtr.Zero)
{
Marshal.FreeHGlobal(settings.pRendererID);
}
// Init 3D audio
handle3D = new byte[FAudio.F3DAUDIO_HANDLE_BYTESIZE];
FAudio.FACT3DInitialize(
handle,
handle3D
);
// Grab channel count for DSP_SETTINGS
FAudio.FAudioWaveFormatExtensible mixFormat;
FAudio.FACTAudioEngine_GetFinalMixFormat(
handle,
out mixFormat
);
channels = mixFormat.Format.nChannels;
// All XACT references have to go through here...
notificationDesc = new FAudio.FACTNotificationDescription();
notificationDesc.flags = FAudio.FACT_FLAG_NOTIFICATION_PERSIST;
notificationDesc.type = FAudio.FACTNOTIFICATIONTYPE_WAVEBANKDESTROYED;
FAudio.FACTAudioEngine_RegisterNotification(
handle,
ref notificationDesc
);
notificationDesc.type = FAudio.FACTNOTIFICATIONTYPE_SOUNDBANKDESTROYED;
FAudio.FACTAudioEngine_RegisterNotification(
handle,
ref notificationDesc
);
notificationDesc.type = FAudio.FACTNOTIFICATIONTYPE_CUEDESTROYED;
FAudio.FACTAudioEngine_RegisterNotification(
handle,
ref notificationDesc
);
}
