| public static FromStream ( Stream s ) : SoundEffect | ||
| s | Stream | Stream object containing PCM wave data. |
| 리턴 | SoundEffect | |
private XnaSoundEffect FromContent(string assetname)
{
assetName = Game.FileExtensionCheck(assetName, soundExtensions);
FileStream fs = new FileStream(assetName, FileMode.Open);
XnaSoundEffect sound = XnaSoundEffect.FromStream(fs);
fs.Close();
return(sound);
}
/// <param name="audioEngine">Instance of the AudioEngine to associate this wave bank with.</param>
/// <param name="nonStreamingWaveBankFilename">Path to the .xwb file to load.</param>
/// <remarks>This constructor immediately loads all wave data into memory at once.</remarks>
public WaveBank(AudioEngine audioEngine, string nonStreamingWaveBankFilename)
{
//XWB PARSING
//Adapted from MonoXNA
//Originally adaped from Luigi Auriemma's unxwb
WaveBankHeader wavebankheader;
WaveBankData wavebankdata;
WaveBankEntry wavebankentry;
wavebankdata.EntryNameElementSize = 0;
wavebankdata.CompactFormat = 0;
wavebankdata.Alignment = 0;
wavebankdata.BuildTime = 0;
wavebankentry.Format = 0;
wavebankentry.PlayRegion.Length = 0;
wavebankentry.PlayRegion.Offset = 0;
int wavebank_offset = 0;
nonStreamingWaveBankFilename = FileHelpers.NormalizeFilePathSeparators(nonStreamingWaveBankFilename);
#if !ANDROID
BinaryReader reader = new BinaryReader(TitleContainer.OpenStream(nonStreamingWaveBankFilename));
#else
Stream stream = Game.Activity.Assets.Open(nonStreamingWaveBankFilename);
MemoryStream ms = new MemoryStream();
stream.CopyTo(ms);
stream.Close();
ms.Position = 0;
BinaryReader reader = new BinaryReader(ms);
#endif
reader.ReadBytes(4);
wavebankheader.Version = reader.ReadInt32();
int last_segment = 4;
//if (wavebankheader.Version == 1) goto WAVEBANKDATA;
if (wavebankheader.Version <= 3)
{
last_segment = 3;
}
if (wavebankheader.Version >= 42)
{
reader.ReadInt32(); // skip HeaderVersion
}
wavebankheader.Segments = new Segment[5];
for (int i = 0; i <= last_segment; i++)
{
wavebankheader.Segments[i].Offset = reader.ReadInt32();
wavebankheader.Segments[i].Length = reader.ReadInt32();
}
reader.BaseStream.Seek(wavebankheader.Segments[0].Offset, SeekOrigin.Begin);
//WAVEBANKDATA:
wavebankdata.Flags = reader.ReadInt32();
wavebankdata.EntryCount = reader.ReadInt32();
if ((wavebankheader.Version == 2) || (wavebankheader.Version == 3))
{
wavebankdata.BankName = System.Text.Encoding.UTF8.GetString(reader.ReadBytes(16), 0, 16).Replace("\0", "");
}
else
{
wavebankdata.BankName = System.Text.Encoding.UTF8.GetString(reader.ReadBytes(64), 0, 64).Replace("\0", "");
}
_bankName = wavebankdata.BankName;
if (wavebankheader.Version == 1)
{
//wavebank_offset = (int)ftell(fd) - file_offset;
wavebankdata.EntryMetaDataElementSize = 20;
}
else
{
wavebankdata.EntryMetaDataElementSize = reader.ReadInt32();
wavebankdata.EntryNameElementSize = reader.ReadInt32();
wavebankdata.Alignment = reader.ReadInt32();
wavebank_offset = wavebankheader.Segments[1].Offset; //METADATASEGMENT
}
if ((wavebankdata.Flags & Flag_Compact) != 0)
{
reader.ReadInt32(); // compact_format
}
int playregion_offset = wavebankheader.Segments[last_segment].Offset;
if (playregion_offset == 0)
{
playregion_offset =
wavebank_offset +
(wavebankdata.EntryCount * wavebankdata.EntryMetaDataElementSize);
}
int segidx_entry_name = 2;
if (wavebankheader.Version >= 42)
{
segidx_entry_name = 3;
}
if ((wavebankheader.Segments[segidx_entry_name].Offset != 0) &&
(wavebankheader.Segments[segidx_entry_name].Length != 0))
{
if (wavebankdata.EntryNameElementSize == -1)
{
wavebankdata.EntryNameElementSize = 0;
}
byte[] entry_name = new byte[wavebankdata.EntryNameElementSize + 1];
entry_name[wavebankdata.EntryNameElementSize] = 0;
}
_sounds = new SoundEffect[wavebankdata.EntryCount];
for (int current_entry = 0; current_entry < wavebankdata.EntryCount; current_entry++)
{
reader.BaseStream.Seek(wavebank_offset, SeekOrigin.Begin);
//SHOWFILEOFF;
//memset(&wavebankentry, 0, sizeof(wavebankentry));
wavebankentry.LoopRegion.Length = 0;
wavebankentry.LoopRegion.Offset = 0;
if ((wavebankdata.Flags & Flag_Compact) != 0)
{
int len = reader.ReadInt32();
wavebankentry.Format = wavebankdata.CompactFormat;
wavebankentry.PlayRegion.Offset = (len & ((1 << 21) - 1)) * wavebankdata.Alignment;
wavebankentry.PlayRegion.Length = (len >> 21) & ((1 << 11) - 1);
// workaround because I don't know how to handke the deviation length
reader.BaseStream.Seek(wavebank_offset + wavebankdata.EntryMetaDataElementSize, SeekOrigin.Begin);
//MYFSEEK(wavebank_offset + wavebankdata.dwEntryMetaDataElementSize); // seek to the next
if (current_entry == (wavebankdata.EntryCount - 1))
{ // the last track
len = wavebankheader.Segments[last_segment].Length;
}
else
{
len = ((reader.ReadInt32() & ((1 << 21) - 1)) * wavebankdata.Alignment);
}
wavebankentry.PlayRegion.Length =
len - // next offset
wavebankentry.PlayRegion.Offset; // current offset
goto wavebank_handle;
}
if (wavebankheader.Version == 1)
{
wavebankentry.Format = reader.ReadInt32();
wavebankentry.PlayRegion.Offset = reader.ReadInt32();
wavebankentry.PlayRegion.Length = reader.ReadInt32();
wavebankentry.LoopRegion.Offset = reader.ReadInt32();
wavebankentry.LoopRegion.Length = reader.ReadInt32();
}
else
{
if (wavebankdata.EntryMetaDataElementSize >= 4)
{
wavebankentry.FlagsAndDuration = reader.ReadInt32();
}
if (wavebankdata.EntryMetaDataElementSize >= 8)
{
wavebankentry.Format = reader.ReadInt32();
}
if (wavebankdata.EntryMetaDataElementSize >= 12)
{
wavebankentry.PlayRegion.Offset = reader.ReadInt32();
}
if (wavebankdata.EntryMetaDataElementSize >= 16)
{
wavebankentry.PlayRegion.Length = reader.ReadInt32();
}
if (wavebankdata.EntryMetaDataElementSize >= 20)
{
wavebankentry.LoopRegion.Offset = reader.ReadInt32();
}
if (wavebankdata.EntryMetaDataElementSize >= 24)
{
wavebankentry.LoopRegion.Length = reader.ReadInt32();
}
}
if (wavebankdata.EntryMetaDataElementSize < 24)
{ // work-around
if (wavebankentry.PlayRegion.Length != 0)
{
wavebankentry.PlayRegion.Length = wavebankheader.Segments[last_segment].Length;
}
}// else if(wavebankdata.EntryMetaDataElementSize > sizeof(WaveBankEntry)) { // skip unused fields
// MYFSEEK(wavebank_offset + wavebankdata.EntryMetaDataElementSize);
//}
wavebank_handle:
wavebank_offset += wavebankdata.EntryMetaDataElementSize;
wavebankentry.PlayRegion.Offset += playregion_offset;
// Parse WAVEBANKMINIWAVEFORMAT
int codec;
int chans;
int rate;
int align;
//int bits;
if (wavebankheader.Version == 1)
{ // I'm not 100% sure if the following is correct
// version 1:
// 1 00000000 000101011000100010 0 001 0
// | | | | | |
// | | | | | wFormatTag
// | | | | nChannels
// | | | ???
// | | nSamplesPerSec
// | wBlockAlign
// wBitsPerSample
codec = (wavebankentry.Format) & ((1 << 1) - 1);
chans = (wavebankentry.Format >> (1)) & ((1 << 3) - 1);
rate = (wavebankentry.Format >> (1 + 3 + 1)) & ((1 << 18) - 1);
align = (wavebankentry.Format >> (1 + 3 + 1 + 18)) & ((1 << 8) - 1);
//bits = (wavebankentry.Format >> (1 + 3 + 1 + 18 + 8)) & ((1 << 1) - 1);
/*} else if(wavebankheader.dwVersion == 23) { // I'm not 100% sure if the following is correct
* // version 23:
* // 1000000000 001011101110000000 001 1
* // | | | | |
* // | | | | ???
* // | | | nChannels?
* // | | nSamplesPerSec
* // | ???
* // !!!UNKNOWN FORMAT!!!
*
* //codec = -1;
* //chans = (wavebankentry.Format >> 1) & ((1 << 3) - 1);
* //rate = (wavebankentry.Format >> 4) & ((1 << 18) - 1);
* //bits = (wavebankentry.Format >> 31) & ((1 << 1) - 1);
* codec = (wavebankentry.Format ) & ((1 << 1) - 1);
* chans = (wavebankentry.Format >> (1) ) & ((1 << 3) - 1);
* rate = (wavebankentry.Format >> (1 + 3) ) & ((1 << 18) - 1);
* align = (wavebankentry.Format >> (1 + 3 + 18) ) & ((1 << 9) - 1);
* bits = (wavebankentry.Format >> (1 + 3 + 18 + 9)) & ((1 << 1) - 1); */
}
else
{
// 0 00000000 000111110100000000 010 01
// | | | | |
// | | | | wFormatTag
// | | | nChannels
// | | nSamplesPerSec
// | wBlockAlign
// wBitsPerSample
codec = (wavebankentry.Format) & ((1 << 2) - 1);
chans = (wavebankentry.Format >> (2)) & ((1 << 3) - 1);
rate = (wavebankentry.Format >> (2 + 3)) & ((1 << 18) - 1);
align = (wavebankentry.Format >> (2 + 3 + 18)) & ((1 << 8) - 1);
//bits = (wavebankentry.Format >> (2 + 3 + 18 + 8)) & ((1 << 1) - 1);
}
reader.BaseStream.Seek(wavebankentry.PlayRegion.Offset, SeekOrigin.Begin);
byte[] audiodata = reader.ReadBytes(wavebankentry.PlayRegion.Length);
if (codec == MiniFormatTag_PCM)
{
//write PCM data into a wav
#if DIRECTX
// TODO: Wouldn't storing a SoundEffectInstance like this
// result in the "parent" SoundEffect being garbage collected?
SharpDX.Multimedia.WaveFormat waveFormat = new SharpDX.Multimedia.WaveFormat(rate, chans);
var sfx = new SoundEffect(audiodata, 0, audiodata.Length, rate, (AudioChannels)chans, wavebankentry.LoopRegion.Offset, wavebankentry.LoopRegion.Length)
{
_format = waveFormat
};
_sounds[current_entry] = sfx;
#else
_sounds[current_entry] = new SoundEffect(audiodata, rate, (AudioChannels)chans);
#endif
}
else if (codec == MiniForamtTag_WMA) //WMA or xWMA (or XMA2)
{
byte[] wmaSig = { 0x30, 0x26, 0xb2, 0x75, 0x8e, 0x66, 0xcf, 0x11, 0xa6, 0xd9, 0x0, 0xaa, 0x0, 0x62, 0xce, 0x6c };
bool isWma = true;
for (int i = 0; i < wmaSig.Length; i++)
{
if (wmaSig[i] != audiodata[i])
{
isWma = false;
break;
}
}
//Let's support m4a data as well for convenience
byte[][] m4aSigs = new byte[][] {
new byte[] { 0x00, 0x00, 0x00, 0x18, 0x66, 0x74, 0x79, 0x70, 0x4D, 0x34, 0x41, 0x20, 0x00, 0x00, 0x02, 0x00 },
new byte[] { 0x00, 0x00, 0x00, 0x20, 0x66, 0x74, 0x79, 0x70, 0x4D, 0x34, 0x41, 0x20, 0x00, 0x00, 0x00, 0x00 }
};
bool isM4a = false;
for (int i = 0; i < m4aSigs.Length; i++)
{
byte[] sig = m4aSigs[i];
bool matches = true;
for (int j = 0; j < sig.Length; j++)
{
if (sig[j] != audiodata[j])
{
matches = false;
break;
}
}
if (matches)
{
isM4a = true;
break;
}
}
if (isWma || isM4a)
{
//WMA data can sometimes be played directly
#if DIRECTX
throw new NotImplementedException();
#elif !WINRT
//hack - NSSound can't play non-wav from data, we have to give a filename
string filename = Path.GetTempFileName();
if (isWma)
{
filename = filename.Replace(".tmp", ".wma");
}
else if (isM4a)
{
filename = filename.Replace(".tmp", ".m4a");
}
using (var audioFile = File.Create(filename))
{
audioFile.Write(audiodata, 0, audiodata.Length);
audioFile.Seek(0, SeekOrigin.Begin);
_sounds[current_entry] = SoundEffect.FromStream(audioFile);
}
#else
throw new NotImplementedException();
#endif
}
else
{
//An xWMA or XMA2 file. Can't be played atm :(
throw new NotImplementedException();
}
}
else if (codec == MiniFormatTag_ADPCM)
{
#if DIRECTX
_sounds[current_entry] = new SoundEffect(audiodata, rate, (AudioChannels)chans)
{
_format = new SharpDX.Multimedia.WaveFormatAdpcm(rate, chans, align)
};
#else
using (var dataStream = new MemoryStream(audiodata)) {
using (var source = new BinaryReader(dataStream)) {
_sounds[current_entry] = new SoundEffect(
MSADPCMToPCM.MSADPCM_TO_PCM(source, (short)chans, (short)align),
rate,
(AudioChannels)chans
);
}
}
#endif
}
else
{
throw new NotImplementedException();
}
}
audioEngine.Wavebanks[_bankName] = this;
}
