Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Speech / Src / Internal / Synthesis / AudioFormatConverter.cs / 1 / AudioFormatConverter.cs
//------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
// History:
// 4/7/2005 [....] Imported from SES code
//-----------------------------------------------------------------
#region Using directives
using System;
using System.Speech.Synthesis.TtsEngine;
#endregion
namespace System.Speech.Internal.Synthesis
{
///
/// AudioFormatConverter takes its conversion tables from ...\scg\tts\common\vapiio\alaw_ULaw.cpp
///
internal static class AudioFormatConverter
{
//*******************************************************************
//
// Internal Methods
//
//*******************************************************************
#region Internal Methods
///
/// Finds the converting method based on the specified formats.
///
/// Reference to the buffer of audio data.
/// Audio format that the data will be converted from.
/// Audio format that the data will be converted to.
/// New array with the audio data in requested format.
static internal short [] Convert (byte [] data, AudioCodec from, AudioCodec to)
{
ConvertByteShort cnvDlgt = null;
switch (from)
{
case AudioCodec.PCM8:
switch (to)
{
case AudioCodec.PCM16: cnvDlgt = new ConvertByteShort (ConvertLinear8LinearByteShort); break;
}
break;
case AudioCodec.PCM16:
switch (to)
{
case AudioCodec.PCM16: cnvDlgt = new ConvertByteShort (ConvertLinear2LinearByteShort); break;
}
break;
case AudioCodec.G711U:
switch (to)
{
case AudioCodec.PCM16: cnvDlgt = new ConvertByteShort (ConvertULaw2Linear); break;
}
break;
case AudioCodec.G711A:
switch (to)
{
case AudioCodec.PCM16: cnvDlgt = new ConvertByteShort (ConvertALaw2Linear); break;
}
break;
default:
throw new FormatException ();
}
if (cnvDlgt == null)
{
throw new FormatException ();
}
return cnvDlgt (data, data.Length);
}
///
/// Finds the converting method based on the specified formats.
///
/// Reference to the buffer of audio data.
/// Audio format that the data will be converted from.
/// Audio format that the data will be converted to.
/// New array with the audio data in requested format.
static internal byte [] Convert (short [] data, AudioCodec from, AudioCodec to)
{
ConvertShortByte cnvDlgt = null;
switch (from)
{
case AudioCodec.PCM16:
switch (to)
{
case AudioCodec.PCM8: cnvDlgt = new ConvertShortByte (ConvertLinear8LinearShortByte); break;
case AudioCodec.PCM16: cnvDlgt = new ConvertShortByte (ConvertLinear2LinearShortByte); break;
case AudioCodec.G711U: cnvDlgt = new ConvertShortByte (ConvertLinear2ULaw); break;
case AudioCodec.G711A: cnvDlgt = new ConvertShortByte (ConvertLinear2ALaw); break;
}
break;
default:
throw new FormatException ();
}
return cnvDlgt (data, data.Length);
}
#if SPEECHSERVER
///
/// Provides a bit rate for specified codec.
///
/// Audio format.
/// Bit rate (bytes per ms).
internal static int GetRate (AudioCodec codec)
{
switch (codec)
{
case AudioCodec.G711U:
case AudioCodec.G711A:
case AudioCodec.PCM8:
return 8;
case AudioCodec.PCM16:
return 16;
}
throw new ArgumentException (SR.Get(SRID.AudioDeviceFormatError), "codec");
}
#endif
internal static AudioCodec TypeOf (WAVEFORMATEX format)
{
AudioCodec codec = AudioCodec.Undefined;
switch ((WaveFormatTag) format.wFormatTag)
{
case WaveFormatTag.WAVE_FORMAT_PCM:
switch (format.nBlockAlign / format.nChannels)
{
case 1:
codec = AudioCodec.PCM8;
break;
case 2:
codec = AudioCodec.PCM16;
break;
}
break;
case WaveFormatTag.WAVE_FORMAT_ALAW:
codec = AudioCodec.G711A;
break;
case WaveFormatTag.WAVE_FORMAT_MULAW:
codec = AudioCodec.G711U;
break;
}
return codec;
}
#endregion
//********************************************************************
//
// Private Methods
//
//*******************************************************************
#region Private Methods
#region Convertors between Linear and ULaw
///
/// This routine converts from 16 bit linear to ULaw by direct access to the conversion table.
///
/// Array of 16 bit linear samples.
/// Size of the data in the array.
/// New buffer of 8 bit ULaw samples.
static internal byte [] ConvertLinear2ULaw (short [] data, int size)
{
byte [] newData = new byte [size];
_uLawCompTableCached = _uLawCompTableCached == null ? CalcLinear2ULawTable () : _uLawCompTableCached;
for (int i = 0; i < size; i++)
{
unchecked
{
// Extend the sign bit for the sample that is constructed from two bytes
newData [i] = _uLawCompTableCached [(ushort) data [i] >> 2];
}
}
return newData;
}
///
/// This routine converts from ULaw to 16 bit linear by direct access to the conversion table.
///
/// Array of 8 bit ULaw samples.
/// Size of the data in the array.
/// New buffer of signed 16 bit linear samples
static internal short [] ConvertULaw2Linear (byte [] data, int size)
{
short [] newData = new short [size];
for (int i = 0; i < size; i++)
{
int sample = ULaw_exp_table [data [i]];
newData [i] = unchecked ((short) sample);
}
return newData;
}
///
/// This routine converts from linear to ULaw.
///
/// Craig Reese: IDA/Supercomputing Research Center
/// Joe Campbell: Department of Defense
/// 29 September 1989
///
/// References:
/// 1) CCITT Recommendation G.711 (very difficult to follow)
/// 2) "A New Digital Technique for Implementation of Any
/// Continuous PCM Companding Law," Villeret, Michel,
/// et al. 1973 IEEE Int. Conf. on Communications, Vol 1,
/// 1973, pg. 11.12-11.17
/// 3) MIL-STD-188-113,"Interoperability and Performance Standards
/// for Analog-to_Digital Conversion Techniques,"
/// 17 February 1987
///
/// New buffer of 8 bit ULaw samples
static private byte [] CalcLinear2ULawTable ()
{
/*const*/
bool ZEROTRAP = false; // turn off the trap as per the MIL-STD
const byte uBIAS = 0x84; // define the add-in bias for 16 bit samples
const int uCLIP = 32635;
byte [] table = new byte [((int) UInt16.MaxValue + 1) >> 2];
for (int i = 0; i < UInt16.MaxValue; i += 4)
{
short data = unchecked ((short) i);
int sample;
int sign, exponent, mantissa;
byte ULawbyte;
unchecked
{
// Extend the sign bit for the sample that is constructed from two bytes
sample = (int) ((data >> 2) << 2);
// Get the sample into sign-magnitude.
sign = (sample >> 8) & 0x80; // set aside the sign
if (sign != 0)
{
sample = -sample;
}
if (sample > uCLIP) sample = uCLIP; // clip the magnitude
// Convert from 16 bit linear to ULaw.
sample = sample + uBIAS;
exponent = (int) exp_lut_linear2ulaw [(sample >> 7) & 0xFF];
mantissa = (int) ((sample >> (exponent + 3)) & 0x0F);
ULawbyte = (byte) (~(sign | (exponent << 4) | mantissa));
}
if (ZEROTRAP)
{
if (ULawbyte == 0) ULawbyte = 0x02; // optional CCITT trap
}
table [i >> 2] = ULawbyte;
}
return table;
}
#if false // keep for reference
///
/// This routine converts from ULaw to 16 bit linear.
///
/// Craig Reese: IDA/Supercomputing Research Center
/// 29 September 1989
///
/// References:
/// 1) CCITT Recommendation G.711 (very difficult to follow)
/// 2) MIL-STD-188-113,"Interoperability and Performance Standards
/// for Analog-to_Digital Conversion Techniques,"
/// 17 February 1987
///
/// Array of 8 bit ULaw samples.
/// Size of the data in the array.
/// New buffer of signed 16 bit linear samples
static internal short [] ConvertULaw2Linear (byte [] data, int size)
{
short [] newData = new short [size];
for (int i = 0; i < size; i++)
{
int sign, exponent, mantissa, sample;
byte ULawbyte;
unchecked
{
ULawbyte = (byte) (~data [i]);
}
sign = (ULawbyte & 0x80);
exponent = (ULawbyte >> 4) & 0x07;
mantissa = ULawbyte & 0x0F;
sample = exp_lut_ulaw2linear [exponent] + (mantissa << (exponent + 3));
if (sign != 0) sample = -sample;
newData [i] = (short) (sample & 0xFFFF);
}
return newData;
}
#endif
#endregion
#region Convertors between Linear and ALaw
///
/// This routine converts from 16 bit linear to ALaw by direct access to the conversion table.
///
/// Array of 16 bit linear samples.
/// Size of the data in the array.
/// New buffer of 8 bit ALaw samples.
static internal byte [] ConvertLinear2ALaw (short [] data, int size)
{
byte [] newData = new byte [size];
_aLawCompTableCached = _aLawCompTableCached == null ? CalcLinear2ALawTable () : _aLawCompTableCached;
for (int i = 0; i < size; i++)
{
unchecked
{
//newData [i] = ALaw_comp_table [(data [i] / 4) & 0x3fff];
newData [i] = _aLawCompTableCached [(ushort) data [i] >> 2];
}
}
return newData;
}
///
/// This routine converts from ALaw to 16 bit linear by direct access to the conversion table.
///
/// Array of 8 bit ALaw samples.
/// Size of the data in the array.
/// New buffer of signed 16 bit linear samples
static internal short [] ConvertALaw2Linear (byte [] data, int size)
{
short [] newData = new short [size];
for (int i = 0; i < size; i++)
{
int sample = ALaw_exp_table [data [i]];
newData [i] = unchecked ((short) sample);
}
return newData;
}
///
/// This routine converts from linear to ALaw.
///
/// Craig Reese: IDA/Supercomputing Research Center
/// Joe Campbell: Department of Defense
/// 29 September 1989
///
/// References:
/// 1) CCITT Recommendation G.711 (very difficult to follow)
/// 2) "A New Digital Technique for Implementation of Any
/// Continuous PCM Companding Law," Villeret, Michel,
/// et al. 1973 IEEE Int. Conf. on Communications, Vol 1,
/// 1973, pg. 11.12-11.17
/// 3) MIL-STD-188-113,"Interoperability and Performance Standards
/// for Analog-to_Digital Conversion Techniques,"
/// 17 February 1987
///
/// New buffer of 8 bit ALaw samples
static private byte [] CalcLinear2ALawTable ()
{
const int ACLIP = 31744;
byte [] table = new byte [((int) UInt16.MaxValue + 1) >> 2];
for (int i = 0; i < UInt16.MaxValue; i += 4)
{
short data = unchecked ((short) i);
int sample, sign, exponent, mantissa;
byte ALawbyte;
unchecked
{
// Extend the sign bit for the sample that is constructed from two bytes
sample = (int) ((data >> 2) << 2);
// Get the sample into sign-magnitude.
sign = ((~sample) >> 8) & 0x80; // set aside the sign
if (sign == 0) sample = -sample; // get magnitude
if (sample > ACLIP) sample = ACLIP; // clip the magnitude
}
// Convert from 16 bit linear to ULaw.
if (sample >= 256)
{
exponent = exp_lut_linear2alaw [(sample >> 8) & 0x7F];
mantissa = (sample >> (exponent + 3)) & 0x0F;
ALawbyte = (byte) ((exponent << 4) | mantissa);
}
else
{
ALawbyte = (byte) (sample >> 4);
}
ALawbyte ^= (byte) (sign ^ 0x55);
table [i >> 2] = ALawbyte;
}
return table;
}
#if false // kept here for reference
///
/// This routine converts from ALaw to linear.
///
/// Craig Reese: IDA/Supercomputing Research Center
/// Joe Campbell: Department of Defense
/// 29 September 1989
///
/// References:
/// 1) CCITT Recommendation G.711 (very difficult to follow)
/// 2) "A New Digital Technique for Implementation of Any
/// Continuous PCM Companding Law," Villeret, Michel,
/// et al. 1973 IEEE Int. Conf. on Communications, Vol 1,
/// 1973, pg. 11.12-11.17
/// 3) MIL-STD-188-113,"Interoperability and Performance Standards
/// for Analog-to_Digital Conversion Techniques,"
/// 17 February 1987
///
/// Array of 8 bit ALaw samples.
/// Size of the data in the array.
/// New buffer of signed 16 bit linear samples.
static internal short [] BuildALawTable (byte [] data, int size)
{
short [] newData = new short [size];
for (int i = 0; i < size; i++)
{
int sign, exponent, mantissa, sample;
byte ALawbyte = data [i];
ALawbyte ^= 0x55;
sign = (ALawbyte & 0x80);
ALawbyte &= 0x7f; // get magnitude
if (ALawbyte >= 16)
{
exponent = (ALawbyte >> 4) & 0x07;
mantissa = ALawbyte & 0x0F;
sample = exp_lut_alaw2linear [exponent] + (mantissa << (exponent + 3));
}
else
{
sample = (ALawbyte << 4) + 8;
}
if (sign == 0) sample = -sample;
newData [i] = unchecked ((short) sample);
}
return newData;
}
#endif
#endregion
#region PCM to PCM
///
/// Empty linear conversion (does nothing, for table consistensy).
///
/// Array of audio data in linear format.
/// Size of the data in the array.
/// The same array in linear format.
static private short [] ConvertLinear2LinearByteShort (byte [] data, int size)
{
short [] as1 = new short [size / 2];
unchecked
{
for (int i = 0; i < size; i += 2)
{
as1 [i / 2] = (short) ((short) data [i] + (short) (data [i + 1] << 8));
}
}
return as1;
}
///
/// Empty linear conversion (does nothing, for table consistensy).
///
/// Array of audio data in linear format.
/// Size of the data in the array.
/// The same array in linear format.
static private short [] ConvertLinear8LinearByteShort (byte [] data, int size)
{
short [] as1 = new short [size];
unchecked
{
for (int i = 0; i < size; i++)
{
as1 [i] = (short) (((short) data [i] - 128) << 8);
}
}
return as1;
}
///
/// Empty linear conversion (does nothing, for table consistensy).
///
/// Array of audio data in linear format.
/// Size of the data in the array.
/// The same array in linear format.
static private byte [] ConvertLinear2LinearShortByte (short [] data, int size)
{
byte [] ab = new byte [size * 2];
for (int i = 0; i < size; i++)
{
short s = data [i];
ab [2 * i] = unchecked ((byte) s);
ab [2 * i + 1] = unchecked ((byte) (s >> 8));
}
return ab; // the same format: do nothing
}
///
/// Empty linear conversion (does nothing, for table consistensy).
///
/// Array of audio data in linear format.
/// Size of the data in the array.
/// The same array in linear format.
static private byte [] ConvertLinear8LinearShortByte (short [] data, int size)
{
byte [] ab = new byte [size];
for (int i = 0; i < size; i++)
{
ab [i] = unchecked ((byte) (((ushort) ((data [i] + 127) >> 8)) + 128));
}
return ab; // the same format: do nothing
}
#endregion
#endregion
//********************************************************************
//
// Private Members
//
//********************************************************************
#region Private Members
#region Converion tables for direct conversions
// Cached table for aLaw and uLaw convertion (16K * 2 bytes each)
static private byte [] _uLawCompTableCached;
static private byte [] _aLawCompTableCached;
#endregion
#region Conversion tables for algorithmic conversions
private static readonly int [] exp_lut_linear2alaw = new int [128]
{
1,1,2,2,3,3,3,3,
4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,
5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7 ,
7 ,7 ,7 ,7 ,7 ,7,7,7
};
static private int [] exp_lut_linear2ulaw = new int [256]
{
0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7 ,7 ,7 ,7 ,7 ,7 ,7,7,7
};
#if false // keep for reference
static private int [] exp_lut_alaw2linear = new int [8] { 0 , 264 , 528 , 1056 , 2112 , 4224 , 8448, 16896 };
static private int [] exp_lut_ulaw2linear = new int [8] { 0 , 132 , 396 , 924 , 1980 , 4092 , 8316, 16764 };
#endif
#endregion
#region Conversion tables for 'byte' to 'short' converion
///
/// Table to converts ULaw values to Linear
///
static private int [] ULaw_exp_table = new int [256]
{
-32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
-23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
-15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
-11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
-876, -844, -812, -780, -748, -716, -684, -652,
-620, -588, -556, -524, -492, -460, -428, -396,
-372, -356, -340, -324, -308, -292, -276, -260,
-244, -228, -212, -196, -180, -164, -148, -132,
-120, -112, -104, -96, -88, -80, -72, -64,
-56, -48, -40, -32, -24, -16, -8, 0,
32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
876, 844, 812, 780, 748, 716, 684, 652,
620, 588, 556, 524, 492, 460, 428, 396,
372, 356, 340, 324, 308, 292, 276, 260,
244, 228, 212, 196, 180, 164, 148, 132,
120, 112, 104, 96, 88, 80, 72, 64,
56, 48, 40, 32, 24, 16, 8, 0
};
///
/// Table to converts ALaw values to Linear
///
static private int [] ALaw_exp_table = new int [256]
{
-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
-22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
-30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
-11008,-10496,-12032,-11520, -8960, -8448, -9984, -9472,
-15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
-344, -328, -376, -360, -280, -264, -312, -296,
-472, -456, -504, -488, -408, -392, -440, -424,
-88, -72, -120, -104, -24, -8, -56, -40,
-216, -200, -248, -232, -152, -136, -184, -168,
-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
-688, -656, -752, -720, -560, -528, -624, -592,
-944, -912, -1008, -976, -816, -784, -880, -848,
5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
344, 328, 376, 360, 280, 264, 312, 296,
472, 456, 504, 488, 408, 392, 440, 424,
88, 72, 120, 104, 24, 8, 56, 40,
216, 200, 248, 232, 152, 136, 184, 168,
1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
688, 656, 752, 720, 560, 528, 624, 592,
944, 912, 1008, 976, 816, 784, 880, 848
};
#if false // keep for reference
#region Conversion tables between ALaw and ULaw
///
/// copy from CCITT G.711 specifications:
/// u- to ALaw conversions
///
static private byte [] s_U2A = new byte [128]
{
1, 1, 2, 2, 3, 3, 4, 4,
5, 5, 6, 6, 7, 7, 8, 8,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24,
25, 27, 29, 31, 33, 34, 35, 36,
37, 38, 39, 40, 41, 42, 43, 44,
46, 48, 49, 50, 51, 52, 53, 54,
55, 56, 57, 58, 59, 60, 61, 62,
64, 65, 66, 67, 68, 69, 70, 71,
72, 73, 74, 75, 76, 77, 78, 79,
81, 82, 83, 84, 85, 86, 87, 88,
89, 90, 91, 92, 93, 94, 95, 96,
97, 98, 99, 100, 101, 102, 103, 104,
105, 106, 107, 108, 109, 110, 111, 112,
113, 114, 115, 116, 117, 118, 119, 120,
121, 122, 123, 124, 125, 126, 127, 128
};
///
/// copy from CCITT G.711 specifications:
/// A- to ULaw conversions
///
static private byte [] s_A2U = new byte [128]
{
1, 3, 5, 7, 9, 11, 13, 15,
16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31,
32, 32, 33, 33, 34, 34, 35, 35,
36, 37, 38, 39, 40, 41, 42, 43,
44, 45, 46, 47, 48, 48, 49, 49,
50, 51, 52, 53, 54, 55, 56, 57,
58, 59, 60, 61, 62, 63, 64, 64,
65, 66, 67, 68, 69, 70, 71, 72,
73, 74, 75, 76, 77, 78, 79, 79,
80, 81, 82, 83, 84, 85, 86, 87,
88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99, 100, 101, 102, 103,
104, 105, 106, 107, 108, 109, 110, 111,
112, 113, 114, 115, 116, 117, 118, 119,
120, 121, 122, 123, 124, 125, 126, 127
};
#endregion
#endif
#endregion
internal enum WaveFormatTag
{
WAVE_FORMAT_PCM = 1,
WAVE_FORMAT_ALAW = 0x0006,
WAVE_FORMAT_MULAW = 0x0007
}
// delegates
delegate short [] ConvertByteShort (byte [] data, int size);
delegate byte [] ConvertShortByte (short [] data, int size);
#endregion
}
//*******************************************************************
//
// Internal Types
//
//********************************************************************
#region Internal Types
///
/// Supported formats for audio transcoding in SES
///
internal enum AudioCodec
{
///
/// Audio format PCM 16 bit
///
PCM16 = 128,
///
/// Audio format PCM 16 bit
///
PCM8 = 127,
///
/// Audio format G.711 mu-law
///
G711U = 0,
///
/// AudioFormat G.711 A-law
///
G711A = 8,
///
/// No audio format specified
///
Undefined = -1
}
#endregion
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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- InvalidCommandTreeException.cs
- TextTreeNode.cs
- FSWPathEditor.cs
- DiscriminatorMap.cs
- HttpEncoderUtility.cs
- Misc.cs
- ISAPIApplicationHost.cs
- DataObjectPastingEventArgs.cs
- XmlSchemaIdentityConstraint.cs
- ObjectFullSpanRewriter.cs
- HMACMD5.cs
- CodeDirectionExpression.cs
- EntityModelBuildProvider.cs
- QuaternionAnimation.cs
- ErasingStroke.cs
- DataGridHeaderBorder.cs
- RSAOAEPKeyExchangeDeformatter.cs
- HttpContextServiceHost.cs
- DataSvcMapFileSerializer.cs
- SecurityDocument.cs
- MdiWindowListStrip.cs
- ManualWorkflowSchedulerService.cs
- Scene3D.cs
- HiddenFieldDesigner.cs
- ThrowOnMultipleAssignment.cs
- ContentElement.cs
- XmlKeywords.cs
- _SafeNetHandles.cs
- Site.cs
- TypeDescriptor.cs
- OutputCacheSettings.cs
- HttpHeaderCollection.cs
- OperationAbortedException.cs
- HelpInfo.cs
- LineGeometry.cs
- DeploymentSectionCache.cs
- WebPartCloseVerb.cs
- TextEffect.cs
- UriExt.cs
- KeyInfo.cs
- HMACSHA256.cs
- SecurityRuntime.cs
- NoClickablePointException.cs
- DataObjectEventArgs.cs
- Misc.cs
- StrokeCollection2.cs
- HostingEnvironmentSection.cs
- AncestorChangedEventArgs.cs
- EtwTrace.cs
- XmlTextWriter.cs
- WebPartCollection.cs
- HttpException.cs
- AnnotationHighlightLayer.cs
- UniqueTransportManagerRegistration.cs
- VisualTreeUtils.cs
- ConfigXmlSignificantWhitespace.cs
- Int32Rect.cs
- SiteMapDataSource.cs
- PromptEventArgs.cs
- IndexedString.cs
- EntryIndex.cs
- XmlParserContext.cs
- ListSortDescription.cs
- LogicalExpr.cs
- ChannelSinkStacks.cs
- RewritingValidator.cs
- unsafenativemethodsother.cs
- WsiProfilesElement.cs
- DataTableCollection.cs
- ConstraintCollection.cs
- TextFormatterContext.cs
- CreateDataSourceDialog.cs
- PropertyRecord.cs
- SkinBuilder.cs
- WebHttpSecurityModeHelper.cs
- MasterPageCodeDomTreeGenerator.cs
- RootBrowserWindowAutomationPeer.cs
- XmlDocumentFragment.cs
- DataServiceException.cs
- SqlNodeAnnotation.cs
- Track.cs
- XXXInfos.cs
- OverflowException.cs
- InkCanvasSelectionAdorner.cs
- WindowsListViewItemStartMenu.cs
- RsaKeyIdentifierClause.cs
- PageStatePersister.cs
- CodeCatchClauseCollection.cs
- PropertyMapper.cs
- MachineKeySection.cs
- AdornerLayer.cs
- CultureTable.cs
- OleDbDataReader.cs
- GridEntry.cs
- SchemaDeclBase.cs
- WorkingDirectoryEditor.cs
- TabletDevice.cs
- ToolboxItemFilterAttribute.cs
- DeviceSpecificDesigner.cs
- UpDownEvent.cs