/// <summary>Decodes a Speex file to PCM.</summary>
/// <remarks>Decodes a Speex file to PCM.</remarks>
/// <param name="srcPath"></param>
/// <param name="destPath"></param>
/// <exception>IOException</exception>
/// <exception cref="System.IO.IOException"></exception>
public virtual void decode(java.io.RandomInputStream srcPath, java.io.RandomOutputStream destPath)
{
byte[] header = new byte[2048];
byte[] payload = new byte[65536];
byte[] decdat = new byte[44100 * 2 * 2];
int WAV_HEADERSIZE = 8;
short WAVE_FORMAT_SPEEX = (short)unchecked((short)(0xa109));
string RIFF = "RIFF";
string WAVE = "WAVE";
string FORMAT = "fmt ";
string DATA = "data";
int OGG_HEADERSIZE = 27;
int OGG_SEGOFFSET = 26;
string OGGID = "OggS";
int segments = 0;
int curseg = 0;
int bodybytes = 0;
int decsize = 0;
int packetNo = 0;
// Display info
if (printlevel <= INFO)
{
version();
}
if (printlevel <= DEBUG)
{
System.Console.WriteLine(string.Empty);
}
if (printlevel <= DEBUG)
{
System.Console.WriteLine("Input File: " + srcPath);
}
// construct a new decoder
speexDecoder = new org.xiph.speex.SpeexDecoder();
// open the input stream
java.io.DataInputStream dis = new java.io.DataInputStream((srcPath));
org.xiph.speex.AudioFileWriter writer = null;
int origchksum;
int chksum;
try
{
// read until we get to EOF
while (true)
{
if (srcFormat == FILE_FORMAT_OGG)
{
// read the OGG header
dis.readFully(header, 0, OGG_HEADERSIZE);
origchksum = readInt(header, 22);
header[22] = 0;
header[23] = 0;
header[24] = 0;
header[25] = 0;
chksum = org.xiph.speex.OggCrc.checksum(0, header, 0, OGG_HEADERSIZE);
// make sure its a OGG header
if (!OGGID.Equals(cspeex.StringUtil.getStringForBytes(header, 0, 4)))
{
System.Console.Error.WriteLine("missing ogg id!");
return;
}
segments = header[OGG_SEGOFFSET] & unchecked((int)(0xFF));
dis.readFully(header, OGG_HEADERSIZE, segments);
chksum = org.xiph.speex.OggCrc.checksum(chksum, header, OGG_HEADERSIZE, segments);
for (curseg = 0; curseg < segments; curseg++)
{
bodybytes = header[OGG_HEADERSIZE + curseg] & unchecked((int)(0xFF));
if (bodybytes == 255)
{
System.Console.Error.WriteLine("sorry, don't handle 255 sizes!");
return;
}
dis.readFully(payload, 0, bodybytes);
chksum = org.xiph.speex.OggCrc.checksum(chksum, payload, 0, bodybytes);
if (packetNo == 0)
{
if (readSpeexHeader(payload, 0, bodybytes))
{
if (printlevel <= DEBUG)
{
System.Console.WriteLine("File Format: Ogg Speex");
System.Console.WriteLine("Sample Rate: " + sampleRate);
System.Console.WriteLine("Channels: " + channels);
System.Console.WriteLine("Encoder mode: " + (mode == 0 ? "Narrowband" : (mode
== 1 ? "Wideband" : "UltraWideband")));
System.Console.WriteLine("Frames per packet: " + nframes);
}
if (destFormat == FILE_FORMAT_WAVE)
{
writer = new org.xiph.speex.PcmWaveWriter(speexDecoder.getSampleRate(), speexDecoder
.getChannels());
if (printlevel <= DEBUG)
{
System.Console.WriteLine(string.Empty);
System.Console.WriteLine("Output File: " + destPath);
System.Console.WriteLine("File Format: PCM Wave");
System.Console.WriteLine("Perceptual Enhancement: " + enhanced);
}
}
else
{
writer = new org.xiph.speex.RawWriter();
if (printlevel <= DEBUG)
{
System.Console.WriteLine(string.Empty);
System.Console.WriteLine("Output File: " + destPath);
System.Console.WriteLine("File Format: Raw Audio");
System.Console.WriteLine("Perceptual Enhancement: " + enhanced);
}
}
writer.open(destPath);
writer.writeHeader(null);
packetNo++;
}
else
{
packetNo = 0;
}
}
else
{
if (packetNo == 1)
{
// Ogg Comment packet
packetNo++;
}
else
{
if (loss > 0 && random.nextInt(100) < loss)
{
speexDecoder.processData(null, 0, bodybytes);
for (int i = 1; i < nframes; i++)
{
speexDecoder.processData(true);
}
}
else
{
speexDecoder.processData(payload, 0, bodybytes);
for (int i = 1; i < nframes; i++)
{
speexDecoder.processData(false);
}
}
if ((decsize = speexDecoder.getProcessedData(decdat, 0)) > 0)
{
writer.writePacket(decdat, 0, decsize);
}
packetNo++;
}
}
}
if (chksum != origchksum)
{
throw new System.IO.IOException("Ogg CheckSums do not match");
}
}
else
{
// Wave or Raw Speex
if (packetNo == 0)
{
if (srcFormat == FILE_FORMAT_WAVE)
{
// read the WAVE header
dis.readFully(header, 0, WAV_HEADERSIZE + 4);
// make sure its a WAVE header
if (!RIFF.Equals(cspeex.StringUtil.getStringForBytes(header, 0, 4)) && !WAVE.Equals
(cspeex.StringUtil.getStringForBytes(header, 8, 4)))
{
System.Console.Error.WriteLine("Not a WAVE file");
return;
}
// Read other header chunks
dis.readFully(header, 0, WAV_HEADERSIZE);
string chunk = cspeex.StringUtil.getStringForBytes(header, 0, 4);
int size = readInt(header, 4);
while (!chunk.Equals(DATA))
{
dis.readFully(header, 0, size);
if (chunk.Equals(FORMAT))
{
if (readShort(header, 0) != WAVE_FORMAT_SPEEX)
{
System.Console.Error.WriteLine("Not a Wave Speex file");
return;
}
channels = readShort(header, 2);
sampleRate = readInt(header, 4);
bodybytes = readShort(header, 12);
if (readShort(header, 16) < 82)
{
System.Console.Error.WriteLine("Possibly corrupt Speex Wave file.");
return;
}
readSpeexHeader(header, 20, 80);
// Display audio info
if (printlevel <= DEBUG)
{
System.Console.WriteLine("File Format: Wave Speex");
System.Console.WriteLine("Sample Rate: " + sampleRate);
System.Console.WriteLine("Channels: " + channels);
System.Console.WriteLine("Encoder mode: " + (mode == 0 ? "Narrowband" : (mode
== 1 ? "Wideband" : "UltraWideband")));
System.Console.WriteLine("Frames per packet: " + nframes);
}
}
dis.readFully(header, 0, WAV_HEADERSIZE);
chunk = cspeex.StringUtil.getStringForBytes(header, 0, 4);
size = readInt(header, 4);
}
if (printlevel <= DEBUG)
{
System.Console.WriteLine("Data size: " + size);
}
}
else
{
if (printlevel <= DEBUG)
{
System.Console.WriteLine("File Format: Raw Speex");
System.Console.WriteLine("Sample Rate: " + sampleRate);
System.Console.WriteLine("Channels: " + channels);
System.Console.WriteLine("Encoder mode: " + (mode == 0 ? "Narrowband" : (mode
== 1 ? "Wideband" : "UltraWideband")));
System.Console.WriteLine("Frames per packet: " + nframes);
}
speexDecoder.init(mode, sampleRate, channels, enhanced);
if (!vbr)
{
switch (mode)
{
case 0:
{
bodybytes = org.xiph.speex.NbEncoder.NB_FRAME_SIZE[org.xiph.speex.NbEncoder.NB_QUALITY_MAP
[quality]];
break;
}
case 1:
{
//Wideband
bodybytes = org.xiph.speex.SbEncoder.NB_FRAME_SIZE[org.xiph.speex.SbEncoder.NB_QUALITY_MAP
[quality]];
bodybytes += org.xiph.speex.SbEncoder.SB_FRAME_SIZE[org.xiph.speex.SbEncoder.WB_QUALITY_MAP
[quality]];
break;
}
case 2:
{
bodybytes = org.xiph.speex.SbEncoder.NB_FRAME_SIZE[org.xiph.speex.SbEncoder.NB_QUALITY_MAP
[quality]];
bodybytes += org.xiph.speex.SbEncoder.SB_FRAME_SIZE[org.xiph.speex.SbEncoder.WB_QUALITY_MAP
[quality]];
bodybytes += org.xiph.speex.SbEncoder.SB_FRAME_SIZE[org.xiph.speex.SbEncoder.UWB_QUALITY_MAP
[quality]];
break;
}
default:
{
//*/
throw new System.IO.IOException("Illegal mode encoundered.");
break;
}
}
bodybytes = (bodybytes + 7) >> 3;
}
else
{
// We have read the stream to find out more
bodybytes = 0;
}
}
if (destFormat == FILE_FORMAT_WAVE)
{
writer = new org.xiph.speex.PcmWaveWriter(sampleRate, channels);
if (printlevel <= DEBUG)
{
System.Console.WriteLine(string.Empty);
System.Console.WriteLine("Output File: " + destPath);
System.Console.WriteLine("File Format: PCM Wave");
System.Console.WriteLine("Perceptual Enhancement: " + enhanced);
}
}
else
{
writer = new org.xiph.speex.RawWriter();
if (printlevel <= DEBUG)
{
System.Console.WriteLine(string.Empty);
System.Console.WriteLine("Output File: " + destPath);
System.Console.WriteLine("File Format: Raw Audio");
System.Console.WriteLine("Perceptual Enhancement: " + enhanced);
}
}
writer.open(destPath);
writer.writeHeader(null);
packetNo++;
}
else
{
dis.readFully(payload, 0, bodybytes);
if (loss > 0 && random.nextInt(100) < loss)
{
speexDecoder.processData(null, 0, bodybytes);
for (int i = 1; i < nframes; i++)
{
speexDecoder.processData(true);
}
}
else
{
speexDecoder.processData(payload, 0, bodybytes);
for (int i = 1; i < nframes; i++)
{
speexDecoder.processData(false);
}
}
if ((decsize = speexDecoder.getProcessedData(decdat, 0)) > 0)
{
writer.writePacket(decdat, 0, decsize);
}
packetNo++;
}
}
}
}
catch (java.io.EOFException)
{
}
writer.close();
}
// ---|
public virtual void encode(java.io.File srcPath, java.io.File destPath)
{
byte[] temp = new byte[2560];
// stereo UWB requires one to read 2560b
int HEADERSIZE = 8;
string RIFF = "RIFF";
string WAVE = "WAVE";
string FORMAT = "fmt ";
string DATA = "data";
int WAVE_FORMAT_PCM = unchecked((int)(0x0001));
// Display info
if (printlevel <= INFO)
{
version();
}
if (printlevel <= DEBUG)
{
System.Console.WriteLine(string.Empty);
}
if (printlevel <= DEBUG)
{
System.Console.WriteLine("Input File: " + srcPath);
}
// Open the input stream
java.io.DataInputStream dis = new java.io.DataInputStream(new java.io.FileInputStream
(srcPath));
// Prepare input stream
if (srcFormat == FILE_FORMAT_WAVE)
{
// read the WAVE header
dis.readFully(temp, 0, HEADERSIZE + 4);
// make sure its a WAVE header
if (!RIFF.Equals(cspeex.StringUtil.getStringForBytes(temp, 0, 4)) && !WAVE.Equals(cspeex.StringUtil.getStringForBytes
(temp, 8, 4)))
{
System.Console.Error.WriteLine("Not a WAVE file");
return;
}
// Read other header chunks
dis.readFully(temp, 0, HEADERSIZE);
string chunk = cspeex.StringUtil.getStringForBytes(temp, 0, 4);
int size = readInt(temp, 4);
while (!chunk.Equals(DATA))
{
dis.readFully(temp, 0, size);
if (chunk.Equals(FORMAT))
{
if (readShort(temp, 0) != WAVE_FORMAT_PCM)
{
System.Console.Error.WriteLine("Not a PCM file");
return;
}
channels = readShort(temp, 2);
sampleRate = readInt(temp, 4);
if (readShort(temp, 14) != 16)
{
System.Console.Error.WriteLine("Not a 16 bit file " + readShort(temp, 18));
return;
}
// Display audio info
if (printlevel <= DEBUG)
{
System.Console.WriteLine("File Format: PCM wave");
System.Console.WriteLine("Sample Rate: " + sampleRate);
System.Console.WriteLine("Channels: " + channels);
}
}
dis.readFully(temp, 0, HEADERSIZE);
chunk = cspeex.StringUtil.getStringForBytes(temp, 0, 4);
size = readInt(temp, 4);
}
if (printlevel <= DEBUG)
{
System.Console.WriteLine("Data size: " + size);
}
}
else
{
if (sampleRate < 0)
{
switch (mode)
{
case 0:
{
sampleRate = 8000;
break;
}
case 1:
{
sampleRate = 16000;
break;
}
case 2:
{
sampleRate = 32000;
break;
}
default:
{
sampleRate = 8000;
break;
}
}
}
// Display audio info
if (printlevel <= DEBUG)
{
System.Console.WriteLine("File format: Raw audio");
System.Console.WriteLine("Sample rate: " + sampleRate);
System.Console.WriteLine("Channels: " + channels);
System.Console.WriteLine("Data size: " + srcPath.length());
}
}
// Set the mode if it has not yet been determined
if (mode < 0)
{
if (sampleRate < 100)
{
// Sample Rate has probably been given in kHz
sampleRate *= 1000;
}
if (sampleRate < 12000)
{
mode = 0;
}
else
{
// Narrowband
if (sampleRate < 24000)
{
mode = 1;
}
else
{
// Wideband
mode = 2;
}
}
}
// Ultra-wideband
// Construct a new encoder
org.xiph.speex.SpeexEncoder speexEncoder = new org.xiph.speex.SpeexEncoder();
speexEncoder.init(mode, quality, sampleRate, channels);
if (complexity > 0)
{
speexEncoder.getEncoder().setComplexity(complexity);
}
if (bitrate > 0)
{
speexEncoder.getEncoder().setBitRate(bitrate);
}
if (vbr)
{
speexEncoder.getEncoder().setVbr(vbr);
if (vbr_quality > 0)
{
speexEncoder.getEncoder().setVbrQuality(vbr_quality);
}
}
if (vad)
{
speexEncoder.getEncoder().setVad(vad);
}
if (dtx)
{
speexEncoder.getEncoder().setDtx(dtx);
}
// Display info
if (printlevel <= DEBUG)
{
System.Console.WriteLine(string.Empty);
System.Console.WriteLine("Output File: " + destPath);
System.Console.WriteLine("File format: Ogg Speex");
System.Console.WriteLine("Encoder mode: " + (mode == 0 ? "Narrowband" : (mode== 1 ? "Wideband" : "UltraWideband")));
System.Console.WriteLine("Quality: " + (vbr ? vbr_quality : quality));
System.Console.WriteLine("Complexity: " + complexity);
System.Console.WriteLine("Frames per packet: " + nframes);
System.Console.WriteLine("Varible bitrate: " + vbr);
System.Console.WriteLine("Voice activity detection: " + vad);
System.Console.WriteLine("Discontinouous Transmission: " + dtx);
}
// Open the file writer
org.xiph.speex.AudioFileWriter writer;
if (destFormat == FILE_FORMAT_OGG)
{
writer = new org.xiph.speex.OggSpeexWriter(mode, sampleRate, channels, nframes, vbr
);
}
else
{
if (destFormat == FILE_FORMAT_WAVE)
{
nframes = org.xiph.speex.PcmWaveWriter.WAVE_FRAME_SIZES[mode - 1][channels - 1][quality
];
writer = new org.xiph.speex.PcmWaveWriter(mode, quality, sampleRate, channels, nframes
, vbr);
}
else
{
writer = new org.xiph.speex.RawWriter();
}
}
writer.open(destPath);
writer.writeHeader("Encoded with: " + VERSION);
int pcmPacketSize = 2 * channels * speexEncoder.getFrameSize();
try
{
// read until we get to EOF
while (true)
{
dis.readFully(temp, 0, nframes * pcmPacketSize);
for (int i = 0; i < nframes; i++)
{
speexEncoder.processData(temp, i * pcmPacketSize, pcmPacketSize);
}
int encsize = speexEncoder.getProcessedData(temp, 0);
if (encsize > 0)
{
writer.writePacket(temp, 0, encsize);
}
}
}
catch (java.io.EOFException)
{
}
writer.close();
dis.close();
}
