/// <summary>
/// Tries to find the encoding media type with the closest bitrate to that specified
/// </summary>
/// <param name="audioSubtype">Audio subtype, a value from AudioSubtypes</param>
/// <param name="inputFormat">Your encoder input format (used to check sample rate and channel count)</param>
/// <param name="desiredBitRate">Your desired bitrate</param>
/// <returns>The closest media type, or null if none available</returns>
public static MF.MediaType SelectMediaType(Guid audioSubtype, SharpDX.Multimedia.WaveFormat inputFormat, int desiredBitRate)
{
return(GetOutputMediaTypes(audioSubtype)
.Where(mt => mt.Get(MF.MediaTypeAttributeKeys.AudioSamplesPerSecond) == inputFormat.SampleRate &&
mt.Get(MF.MediaTypeAttributeKeys.AudioNumChannels) == inputFormat.Channels)
.Select(mt => new { MediaType = mt, Delta = Math.Abs(desiredBitRate - mt.Get(MF.MediaTypeAttributeKeys.AudioAvgBytesPerSecond) * 8) })
.OrderBy(mt => mt.Delta)
.Select(mt => mt.MediaType)
.FirstOrDefault());
}
/// <summary>
/// <p>Queries if a specific output format is supported for a given input format.</p>
/// </summary>
/// <param name = "inputFormatRef"><dd> <p>Input format. </p> </dd></param>
/// <param name = "requestedOutputFormatRef"><dd> <p>Output format to check for being supported.</p> </dd></param>
/// <param name = "supportedOutputFormatOut"><dd> <p>If not <c>null</c> and the output format is not supported for the given input format, <em>ppSupportedOutputFormat</em> returns a reference to the closest output format that is supported. Use <strong>XAPOFree</strong> to free the returned structure. </p> </dd></param>
/// <returns><p>Returns <see cref = "SharpDX.Result.Ok"/> if the format pair is supported. Returns XAPO_E_FORMAT_UNSUPPORTED if the format pair is not supported.</p></returns>
/// <remarks>
/// <p>The <strong>IXAPO::IsInputFormatSupported</strong> and <strong>IsOutputFormatSupported</strong> methods allow an XAPO to indicate which audio formats it is capable of processing. If a requested format is not supported, the XAPO should return the closest format that it does support. The closest format should be determined based on frame rate, bit depth, and channel count, in that order of importance. The behavior of <strong>IsOutputFormatSupported</strong> is allowed to change, based on the internal state of the XAPO, but its behavior should remain constant between calls to the <strong>IXAPO::LockForProcess</strong> and <strong>IXAPO::UnlockForProcess</strong> methods.</p>
/// </remarks>
/// <doc-id>microsoft.directx_sdk.ixapo.ixapo.isoutputformatsupported</doc-id>
/// <unmanaged>HRESULT IXAPO::IsOutputFormatSupported([In] const WAVEFORMATEX* pInputFormat,[In] const WAVEFORMATEX* pRequestedOutputFormat,[Out, Optional] WAVEFORMATEX** ppSupportedOutputFormat)</unmanaged>
/// <unmanaged-short>IXAPO::IsOutputFormatSupported</unmanaged-short>
internal unsafe SharpDX.Result IsOutputFormatSupported_(ref SharpDX.Multimedia.WaveFormat inputFormatRef, ref SharpDX.Multimedia.WaveFormat requestedOutputFormatRef, out SharpDX.Multimedia.WaveFormat supportedOutputFormatOut)
{
SharpDX.Multimedia.WaveFormat.__Native inputFormatRef_ = default(SharpDX.Multimedia.WaveFormat.__Native);
SharpDX.Multimedia.WaveFormat.__Native requestedOutputFormatRef_ = default(SharpDX.Multimedia.WaveFormat.__Native);
SharpDX.Multimedia.WaveFormat.__Native supportedOutputFormatOut_ = default(SharpDX.Multimedia.WaveFormat.__Native);
supportedOutputFormatOut = default(SharpDX.Multimedia.WaveFormat);
SharpDX.Result __result__;
inputFormatRef.__MarshalTo(ref inputFormatRef_);
requestedOutputFormatRef.__MarshalTo(ref requestedOutputFormatRef_);
__result__ = SharpDX.XAudio2.LocalInterop.CalliStdCallint(this._nativePointer, &inputFormatRef_, &requestedOutputFormatRef_, &supportedOutputFormatOut_, (*(void ***)this._nativePointer)[5]);
supportedOutputFormatOut.__MarshalFrom(ref supportedOutputFormatOut_);
inputFormatRef.__MarshalFree(ref inputFormatRef_);
requestedOutputFormatRef.__MarshalFree(ref requestedOutputFormatRef_);
return(__result__);
}
/// <summary>
/// Load sound data. wavData must not contain WAV Head.
/// </summary>
/// <param name="wavBytes"></param>
/// <returns>Returns duration.</returns>
public decimal Load(byte[] wavBytes, int sampleRate, int bitsPerSample, int channelCount)
{
var format = new SharpDX.Multimedia.WaveFormat(sampleRate, bitsPerSample, channelCount);
// Create and set the buffer description.
var desc = new SoundBufferDescription();
desc.Format = format;
desc.Flags =
// Play sound even if application loses focus.
BufferFlags.GlobalFocus |
// This has to be true to use effects.
BufferFlags.ControlEffects;
desc.BufferBytes = wavBytes.Length;
// Create and set the buffer for playing the sound.
ApplicationBuffer = new SecondarySoundBuffer(ApplicationDevice, desc);
ApplicationBuffer.Write(wavBytes, 0, LockFlags.None);
var duration = AudioHelper.GetDuration(wavBytes.Length, sampleRate, bitsPerSample, channelCount);
return(duration);
}
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;
wavebankentry.Format = 0;
wavebankentry.PlayRegion.Length = 0;
wavebankentry.PlayRegion.Offset = 0;
int wavebank_offset = 0;
#if WINRT
const char notSeparator = '/';
const char separator = '\\';
#else
const char notSeparator = '\\';
var separator = Path.DirectorySeparatorChar;
#endif
// Check for windows-style directory separator character
nonStreamingWaveBankFilename = nonStreamingWaveBankFilename.Replace(notSeparator, separator);
#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
}
int compact_format;
if ((wavebankdata.Flags & Flag_Compact) != 0)
{
compact_format = reader.ReadInt32();
}
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;
int waveentry_offset = wavebankheader.Segments[segidx_entry_name].Offset;
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 SoundEffectInstance[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
SharpDX.Multimedia.WaveFormat waveFormat = new SharpDX.Multimedia.WaveFormat(rate, chans);
sounds[current_entry] = new SoundEffect(waveFormat, audiodata, 0, audiodata.Length, wavebankentry.LoopRegion.Offset, wavebankentry.LoopRegion.Length).CreateInstance();
#else
sounds[current_entry] = new SoundEffectInstance(audiodata, rate, 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);
sounds[current_entry] = new SoundEffect(filename).CreateInstance();
#else
throw new NotImplementedException();
#endif
} else {
//An xWMA or XMA2 file. Can't be played atm :(
throw new NotImplementedException();
}
#if !DIRECTX
/* DirectX platforms can use XAudio2 to stream MSADPCM natively.
* This code is cross-platform, but the problem is that it just
* decodes ALL of the wavedata here. For XAudio2 in particular,
* this is probably ludicrous.
*
* You need to write a DIRECTX ADPCM reader that just loads this
* into the SoundEffect. No decoding should be necessary.
* -flibit
*/
} else if (codec == MiniFormatTag_ADPCM) {
using (MemoryStream dataStream = new MemoryStream(audiodata)) {
using (BinaryReader source = new BinaryReader(dataStream)) {
sounds[current_entry] = new SoundEffectInstance(
MSADPCMToPCM.MSADPCM_TO_PCM(source, (short) chans, (short) align),
rate,
chans
);
}
}
#endif
} else {
throw new NotImplementedException();
}
}
audioEngine.Wavebanks[BankName] = this;
}
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;
#if WINRT
const char notSeparator = '/';
const char separator = '\\';
#else
const char notSeparator = '\\';
var separator = Path.DirectorySeparatorChar;
#endif
// Check for windows-style directory separator character
nonStreamingWaveBankFilename = nonStreamingWaveBankFilename.Replace(notSeparator, separator);
#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 SoundEffectInstance[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
SharpDX.Multimedia.WaveFormat waveFormat = new SharpDX.Multimedia.WaveFormat(rate, chans);
sounds[current_entry] = new SoundEffect(waveFormat, audiodata, 0, audiodata.Length, wavebankentry.LoopRegion.Offset, wavebankentry.LoopRegion.Length).CreateInstance();
#else
sounds[current_entry] = new SoundEffectInstance(audiodata, rate, 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);
sounds[current_entry] = new SoundEffect(filename).CreateInstance();
#else
throw new NotImplementedException();
#endif
}
else
{
//An xWMA or XMA2 file. Can't be played atm :(
throw new NotImplementedException();
}
#if !DIRECTX
/* DirectX platforms can use XAudio2 to stream MSADPCM natively.
* This code is cross-platform, but the problem is that it just
* decodes ALL of the wavedata here. For XAudio2 in particular,
* this is probably ludicrous.
*
* You need to write a DIRECTX ADPCM reader that just loads this
* into the SoundEffect. No decoding should be necessary.
* -flibit
*/
}
else if (codec == MiniFormatTag_ADPCM)
{
using (MemoryStream dataStream = new MemoryStream(audiodata)) {
using (BinaryReader source = new BinaryReader(dataStream)) {
sounds[current_entry] = new SoundEffectInstance(
MSADPCMToPCM.MSADPCM_TO_PCM(source, (short)chans, (short)align),
rate,
chans
);
}
}
#endif
}
else
{
throw new NotImplementedException();
}
}
audioEngine.Wavebanks[BankName] = this;
}
protected internal override SoundEffect Read(ContentReader input, SoundEffect existingInstance)
{
// NXB format for SoundEffect...
//
// Byte [format size] Format WAVEFORMATEX structure
// UInt32 Data size
// Byte [data size] Data Audio waveform data
// Int32 Loop start In bytes (start must be format block aligned)
// Int32 Loop length In bytes (length must be format block aligned)
// Int32 Duration In milliseconds
// WAVEFORMATEX structure...
//
//typedef struct {
// WORD wFormatTag; // byte[0] +2
// WORD nChannels; // byte[2] +2
// DWORD nSamplesPerSec; // byte[4] +4
// DWORD nAvgBytesPerSec; // byte[8] +4
// WORD nBlockAlign; // byte[12] +2
// WORD wBitsPerSample; // byte[14] +2
// WORD cbSize; // byte[16] +2
//} WAVEFORMATEX;
byte[] header = input.ReadBytes(input.ReadInt32());
byte[] data = input.ReadBytes(input.ReadInt32());
int loopStart = input.ReadInt32();
int loopLength = input.ReadInt32();
int num = input.ReadInt32();
#if DIRECTX
var count = data.Length;
var format = (int)BitConverter.ToUInt16(header, 0);
var sampleRate = (int)BitConverter.ToUInt16(header, 4);
var channels = BitConverter.ToUInt16(header, 2);
//var avgBPS = (int)BitConverter.ToUInt16(header, 8);
var blockAlignment = (int)BitConverter.ToUInt16(header, 12);
//var bps = (int)BitConverter.ToUInt16(header, 14);
SharpDX.Multimedia.WaveFormat waveFormat;
if (format == 1)
{
waveFormat = new SharpDX.Multimedia.WaveFormat(sampleRate, channels);
}
else if (format == 2)
{
waveFormat = new SharpDX.Multimedia.WaveFormatAdpcm(sampleRate, channels, blockAlignment);
}
else
{
throw new NotSupportedException("Unsupported wave format!");
}
return(new SoundEffect(waveFormat, data, 0, count, loopStart, loopLength)
{
Name = input.AssetName,
});
#else
if (header[0] == 2 && header[1] == 0)
{
// We've found MSADPCM data! Let's decode it here.
using (MemoryStream origDataStream = new MemoryStream(data))
{
using (BinaryReader reader = new BinaryReader(origDataStream))
{
byte[] newData = MSADPCMToPCM.MSADPCM_TO_PCM(
reader,
header[2],
(short)((header[12] / header[2]) - 22)
);
data = newData;
}
}
// This is PCM data now!
header[0] = 1;
}
int sampleRate = (
(header[4]) +
(header[5] << 8) +
(header[6] << 16) +
(header[7] << 24)
);
return(new SoundEffect(
input.AssetName,
data,
sampleRate,
(header[2] == 2) ? AudioChannels.Stereo : AudioChannels.Mono,
loopStart,
loopLength
));
#endif
}
protected internal override SoundEffect Read(ContentReader input, SoundEffect existingInstance)
{
// NXB format for SoundEffect...
//
// Byte [format size] Format WAVEFORMATEX structure
// UInt32 Data size
// Byte [data size] Data Audio waveform data
// Int32 Loop start In bytes (start must be format block aligned)
// Int32 Loop length In bytes (length must be format block aligned)
// Int32 Duration In milliseconds
// WAVEFORMATEX structure...
//
//typedef struct {
// WORD wFormatTag; // byte[0] +2
// WORD nChannels; // byte[2] +2
// DWORD nSamplesPerSec; // byte[4] +4
// DWORD nAvgBytesPerSec; // byte[8] +4
// WORD nBlockAlign; // byte[12] +2
// WORD wBitsPerSample; // byte[14] +2
// WORD cbSize; // byte[16] +2
//} WAVEFORMATEX;
byte[] header = input.ReadBytes(input.ReadInt32());
byte[] data = input.ReadBytes(input.ReadInt32());
int loopStart = input.ReadInt32();
int loopLength = input.ReadInt32();
int num = input.ReadInt32();
#if WINRT
var count = data.Length;
var format = (int)BitConverter.ToUInt16(header, 0);
var sampleRate = (int)BitConverter.ToUInt16(header, 4);
var channels = BitConverter.ToUInt16(header, 2);
//var avgBPS = (int)BitConverter.ToUInt16(header, 8);
var blockAlignment = (int)BitConverter.ToUInt16(header, 12);
//var bps = (int)BitConverter.ToUInt16(header, 14);
SharpDX.Multimedia.WaveFormat waveFormat;
if (format == 1)
{
waveFormat = new SharpDX.Multimedia.WaveFormat(sampleRate, channels);
}
else if (format == 2)
{
waveFormat = new SharpDX.Multimedia.WaveFormatAdpcm(sampleRate, channels, blockAlignment);
}
else
{
throw new NotImplementedException("Unsupported wave format!");
}
return(new SoundEffect(waveFormat, data, 0, count, loopStart, loopLength)
{
Name = input.AssetName,
});
#else
byte[] soundData = null;
// Proper use of "using" corectly disposes of BinaryWriter which in turn disposes the underlying stream
MemoryStream mStream = new MemoryStream(20 + header.Length + 8 + data.Length);
using (BinaryWriter writer = new BinaryWriter(mStream))
{
writer.Write("RIFF".ToCharArray());
writer.Write((int)(20 + header.Length + data.Length));
writer.Write("WAVE".ToCharArray());
//header can be written as-is
writer.Write("fmt ".ToCharArray());
writer.Write(header.Length);
writer.Write(header);
writer.Write("data".ToCharArray());
writer.Write((int)data.Length);
writer.Write(data);
// Copy the data to an array before disposing the stream
soundData = mStream.ToArray();
}
if (soundData == null)
{
throw new ContentLoadException("Failed to load SoundEffect");
}
return(new SoundEffect(input.AssetName, soundData));
#endif
}