public static unsafe int LoadALBufferFromMem(uint bufNumber, byte* samplePointer, uint sampleSize,
uint uncompSampleSize = 0)
{
var wavMem = new MemBufferFileIo(samplePointer, sampleSize);
var tmp = wavMem.ToSfVirtualIo();
var sfInfo = new LibsndfileInfo();
var sample = sndFileApi.OpenVirtual(ref tmp, LibsndfileMode.Read, ref sfInfo, &wavMem);
if(sample == IntPtr.Zero)
{
Sys.DebugLog(LOG_FILENAME, "Error: can't load sample #{0:D3} from sample block!", bufNumber);
Sys.DebugLog(LOG_FILENAME, $"Libsndfile error: {sndFileApi.Error(IntPtr.Zero):G} ({sndFileApi.ErrorString(IntPtr.Zero)})");
return -1;
}
// Uncomp_sample_size explicitly specifies amount of raw sample data
// to load into buffer. It is only used in TR4/5 with ADPCM samples,
// because full-sized ADPCM sample contains a bit of silence at the end,
// which should be removed. That's where uncomp_sample_size comes into
// business.
// Note that we also need to compare if uncomp_sample_size is smaller
// than native wav length, because for some reason many TR5 uncomp sizes
// are messed up and actually more than actual sample size.
var realSize = sfInfo.Frames * sizeof(ushort);
if (uncompSampleSize == 0 || realSize < uncompSampleSize)
{
uncompSampleSize = (uint)realSize;
}
// We need to change buffer size, as we're using floats here.
if (AUDIO_OPENAL_FLOAT)
uncompSampleSize = (uncompSampleSize / sizeof(ushort)) * sizeof(float);
else
uncompSampleSize = uncompSampleSize / sizeof(ushort) * sizeof(short);
// Find out sample format and load it correspondingly.
// Note that with OpenAL, we can have samples of different formats in same level.
var result = FillALBuffer(bufNumber, sample, uncompSampleSize, sfInfo);
sndFileApi.Close(sample);
return result ? 0 : -3; // Zero means success
}
/// <summary>
/// Wad loading
/// </summary>
private unsafe bool loadWad(byte index, string filename)
{
if (index >= TR_AUDIO_STREAM_WAD_COUNT)
{
ConsoleInfo.Instance.Warning(Strings.SYSWARN_WAD_OUT_OF_BOUNDS, TR_AUDIO_STREAM_WAD_COUNT);
return false;
}
FileStream wadFile;
try
{
wadFile = File.OpenRead(filename);
}
catch
{
ConsoleInfo.Instance.Warning(Strings.SYSWARN_FILE_NOT_FOUND, filename);
return false;
}
var trackName = "";
uint offset = 0;
uint length = 0;
using (var br = Helper.CreateInstance<BinaryReader>(wadFile, Encoding.UTF8, true))
{
br.BaseStream.Position = index * TR_AUDIO_STREAM_WAD_STRIDE;
trackName = br.ParseString(TR_AUDIO_STREAM_WAD_NAMELENGTH, true);
length = br.ReadUInt32();
offset = br.ReadUInt32();
br.BaseStream.Position = offset;
}
if ((IntPtr) wadBuf != IntPtr.Zero)
{
Marshal.FreeHGlobal((IntPtr) wadBuf);
}
if ((IntPtr)wadMemIo != IntPtr.Zero)
{
Marshal.FreeHGlobal((IntPtr)wadMemIo);
}
wadBuf = (byte*)Marshal.AllocHGlobal((int) length);
var buf = new byte[(int)length];
wadFile.Read(buf, 0, (int) length);
Marshal.Copy(buf, 0, (IntPtr)wadBuf, (int)length);
wadMemIo = (MemBufferFileIo*) Marshal.AllocHGlobal(sizeof (MemBufferFileIo));
var s = new MemBufferFileIo(wadBuf, (int) length);
Marshal.StructureToPtr(s, (IntPtr)wadMemIo, false);
var vio = wadMemIo->ToSfVirtualIo();
if ((sndFile = sndFileApi.OpenVirtual(ref vio, LibsndfileMode.Read, ref sfInfo, wadMemIo)) == IntPtr.Zero)
{
ConsoleInfo.Instance.Warning(Strings.SYSWARN_WAD_SEEK_FAILED, offset);
ConsoleInfo.Instance.AddLine(
$"Libsndfile error: {sndFileApi.Error(IntPtr.Zero):G} ({sndFileApi.ErrorString(IntPtr.Zero)})",
FontStyle.ConsoleWarning);
method = TR_AUDIO_STREAM_METHOD.Unknown;
return false;
}
ConsoleInfo.Instance.Notify(Strings.SYSNOTE_WAD_PLAYING, filename, offset, length);
ConsoleInfo.Instance.Notify(Strings.SYSNOTE_TRACK_OPENED, trackName, sfInfo.Channels, sfInfo.SampleRate);
if (AUDIO_OPENAL_FLOAT)
format = sfInfo.Channels == 1 ? ALFormat.MonoFloat32Ext : ALFormat.StereoFloat32Ext;
else
format = sfInfo.Channels == 1 ? ALFormat.Mono16 : ALFormat.Stereo16;
rate = sfInfo.SampleRate;
return true; // Success!
}