// ---|
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();
}
/// <summary>Constructor</summary>
/// <param name="mode">the mode of the encoder (0=NB, 1=WB, 2=UWB).</param>
/// <param name="quality">the quality setting of the encoder (between 0 and 10).</param>
/// <param name="in">the underlying input stream.</param>
/// <param name="format">the target format of this stream's audio data.</param>
/// <param name="length">the length in sample frames of the data in this stream.</param>
/// <param name="size">the buffer size.</param>
/// <exception>
/// IllegalArgumentException
/// if size <= 0.
/// </exception>
public Pcm2SpeexAudioInputStream(int mode, int quality, java.io.InputStream @in,
javax.sound.sampled.AudioFormat format, long length, int size)
: base(@in, format
, length, size)
{
// public static final boolean DEFAULT_VBR = true;
// .4s of audio
// Speex variables
// Ogg variables
// Ogg initialisation
granulepos = 0;
if (streamSerialNumber == 0)
{
streamSerialNumber = new java.util.Random().nextInt();
}
packetsPerOggPage = DEFAULT_PACKETS_PER_OGG_PAGE;
packetCount = 0;
pageCount = 0;
// Speex initialisation
framesPerPacket = DEFAULT_FRAMES_PER_PACKET;
int samplerate = (int)format.getSampleRate();
if (samplerate < 0)
{
samplerate = DEFAULT_SAMPLERATE;
}
channels = format.getChannels();
if (channels < 0)
{
channels = DEFAULT_CHANNELS;
}
if (mode < 0)
{
mode = (samplerate < 12000) ? 0 : ((samplerate < 24000) ? 1 : 2);
}
this.mode = mode;
javax.sound.sampled.AudioFormat.Encoding encoding = format.getEncoding();
if (quality < 0)
{
if (encoding is org.xiph.speex.spi.SpeexEncoding)
{
quality = ((org.xiph.speex.spi.SpeexEncoding)encoding).getQuality();
}
else
{
quality = DEFAULT_QUALITY;
}
}
encoder = new org.xiph.speex.SpeexEncoder();
encoder.init(mode, quality, samplerate, channels);
if (encoding is org.xiph.speex.spi.SpeexEncoding && ((org.xiph.speex.spi.SpeexEncoding
)encoding).isVBR())
{
setVbr(true);
}
else
{
setVbr(false);
}
frameSize = 2 * channels * encoder.getFrameSize();
// Misc initialsation
comment = "Encoded with " + org.xiph.speex.SpeexEncoder.VERSION;
first = true;
}