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/* (c) 2004 James Robson, http://www.arbingersys.com
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
**
** ****************************
**
** How to use:
** - libsndfile.dll must have already been compiled and be in this
** application's search path
**
** - You must edit this file to point to the file you want to convert. Set
** the following line of code (found in the Main() function further below)
** to the name of a .WAV file that exists on your system.
** 186: string sfn = "input.wav";
**
** - From a command prompt type
** csc generate.cs
**
** - Run the resulting executable 'generate.exe'
**
**
** Note: You will obviously need the csc compiler and the .NET runtime. I think
** these are freely available for download from Microsoft's website
** (part of the .NET SDK?).
*/
using System;
using System.Runtime.InteropServices;
using sf_count_t = System.Int64; //alias; see SF_INFO struct
#if PLATFORM_64
using size_t = System.UInt64;
#else
using size_t = System.UInt32;
#endif
class lsndf_example {
//sound file formats
public enum lsndf_frmts {
SF_FORMAT_WAV = 0x010000, /* Microsoft WAV format (little endian). */
SF_FORMAT_AIFF = 0x020000, /* Apple/SGI AIFF format (big endian). */
SF_FORMAT_AU = 0x030000, /* Sun/NeXT AU format (big endian). */
SF_FORMAT_RAW = 0x040000, /* RAW PCM data. */
SF_FORMAT_PAF = 0x050000, /* Ensoniq PARIS file format. */
SF_FORMAT_SVX = 0x060000, /* Amiga IFF / SVX8 / SV16 format. */
SF_FORMAT_NIST = 0x070000, /* Sphere NIST format. */
SF_FORMAT_VOC = 0x080000, /* VOC files. */
SF_FORMAT_IRCAM = 0x0A0000, /* Berkeley/IRCAM/CARL */
SF_FORMAT_W64 = 0x0B0000, /* Sonic Foundry's 64 bit RIFF/WAV */
SF_FORMAT_MAT4 = 0x0C0000, /* Matlab (tm) V4.2 / GNU Octave 2.0 */
SF_FORMAT_MAT5 = 0x0D0000, /* Matlab (tm) V5.0 / GNU Octave 2.1 */
SF_FORMAT_PVF = 0x0E0000, /* Portable Voice Format */
SF_FORMAT_XI = 0x0F0000, /* Fasttracker 2 Extended Instrument */
SF_FORMAT_HTK = 0x100000, /* HMM Tool Kit format */
SF_FORMAT_SDS = 0x110000, /* Midi Sample Dump Standard */
/* Subtypes from here on. */
SF_FORMAT_PCM_S8 = 0x0001, /* Signed 8 bit data */
SF_FORMAT_PCM_16 = 0x0002, /* Signed 16 bit data */
SF_FORMAT_PCM_24 = 0x0003, /* Signed 24 bit data */
SF_FORMAT_PCM_32 = 0x0004, /* Signed 32 bit data */
SF_FORMAT_PCM_U8 = 0x0005, /* Unsigned 8 bit data (WAV and RAW only) */
SF_FORMAT_FLOAT = 0x0006, /* 32 bit float data */
SF_FORMAT_DOUBLE = 0x0007, /* 64 bit float data */
SF_FORMAT_ULAW = 0x0010, /* U-Law encoded. */
SF_FORMAT_ALAW = 0x0011, /* A-Law encoded. */
SF_FORMAT_IMA_ADPCM = 0x0012, /* IMA ADPCM. */
SF_FORMAT_MS_ADPCM = 0x0013, /* Microsoft ADPCM. */
SF_FORMAT_GSM610 = 0x0020, /* GSM 6.10 encoding. */
SF_FORMAT_VOX_ADPCM = 0x0021, /* OKI / Dialogix ADPCM */
SF_FORMAT_G721_32 = 0x0030, /* 32kbs G721 ADPCM encoding. */
SF_FORMAT_G723_24 = 0x0031, /* 24kbs G723 ADPCM encoding. */
SF_FORMAT_G723_40 = 0x0032, /* 40kbs G723 ADPCM encoding. */
SF_FORMAT_DWVW_12 = 0x0040, /* 12 bit Delta Width Variable Word encoding. */
SF_FORMAT_DWVW_16 = 0x0041, /* 16 bit Delta Width Variable Word encoding. */
SF_FORMAT_DWVW_24 = 0x0042, /* 24 bit Delta Width Variable Word encoding. */
SF_FORMAT_DWVW_N = 0x0043, /* N bit Delta Width Variable Word encoding. */
SF_FORMAT_DPCM_8 = 0x0050, /* 8 bit differential PCM (XI only) */
SF_FORMAT_DPCM_16 = 0x0051, /* 16 bit differential PCM (XI only) */
/* Endian-ness options. */
SF_ENDIAN_FILE = 0x00000000, /* Default file endian-ness. */
SF_ENDIAN_LITTLE = 0x10000000, /* Force little endian-ness. */
SF_ENDIAN_BIG = 0x20000000, /* Force big endian-ness. */
SF_ENDIAN_CPU = 0x30000000, /* Force CPU endian-ness. */
SF_FORMAT_SUBMASK = 0x0000FFFF,
SF_FORMAT_TYPEMASK = 0x0FFF0000,
SF_FORMAT_ENDMASK = 0x30000000
}
//modes and other
public enum lsndf_tf
{ /* True and false */
SF_FALSE = 0,
SF_TRUE = 1,
/* Modes for opening files. */
SFM_READ = 0x10,
SFM_WRITE = 0x20,
SFM_RDWR = 0x30
}
//important SF_INFO structure
[StructLayout(LayoutKind.Sequential)]
public struct SF_INFO
{
public sf_count_t frames ; // Used to be called samples. Changed to avoid confusion.
public int samplerate ;
public int channels ;
public int format ;
public int sections ;
public int seekable ;
};
//function declarations
//Note: Not all functions have been prototyped here. Only the ones necessary to
// make this application work. The below code should give some clues as to
// how to add the rest since they have a lot of parameter and return type
// similarities.
[DllImport("libsndfile.dll")]
public static extern IntPtr sf_open ([MarshalAs(UnmanagedType.LPStr)] string path, int mode, ref SF_INFO sfinfo);
[DllImport("libsndfile.dll")]
static extern int sf_error (IntPtr sndfile);
[DllImport("libsndfile.dll")]
static extern IntPtr sf_strerror (IntPtr sndfile);
[DllImport("libsndfile.dll")]
static extern int sf_format_check (ref SF_INFO info);
[DllImport("libsndfile.dll")]
static extern sf_count_t sf_read_float (IntPtr sndfile, float[] ptr, sf_count_t items);
[DllImport("libsndfile.dll")]
static extern sf_count_t sf_write_float (IntPtr sndfile, float[] ptr, sf_count_t items);
[DllImport("libsndfile.dll")]
static extern int sf_close (IntPtr sndfile);
public const sf_count_t BUFFER_LEN = 4096;
//program entry
static void Main( ) {
//declarations
SF_INFO sfinfo = new SF_INFO();
float[] buffer = new float[BUFFER_LEN];
sf_count_t rcnt;
//set the input file
string sfn = "input.wav"; //set to a file on YOUR system
//string sfn = "noexist.wav"; //test with non-existent file
//set the output file
string ofn = "output.wav";
//read in sound file to convert
IntPtr infile = sf_open (sfn, (int)lsndf_tf.SFM_READ, ref sfinfo);
//exit if error was thrown
if ( (int)infile == 0 ) {
Console.WriteLine("Error opening " + sfn);
Console.WriteLine("Error #" + sf_error(infile));
return;
}
//set the file type for the output file
//uncomment one and only one of the statements below to change the output
//file encoding.
//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_PCM_U8);
//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_PCM_16);
//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_MS_ADPCM);
sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_IMA_ADPCM);
//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_WAV | lsndf_frmts.SF_FORMAT_GSM610);
/* Soundforge W64. */
//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_PCM_U8);
//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_PCM_16);
//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_MS_ADPCM);
//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_IMA_ADPCM);
//sfinfo.format = (int)(lsndf_frmts.SF_FORMAT_W64 | lsndf_frmts.SF_FORMAT_GSM610);
//check that SF_INFO is valid
if ( sf_format_check(ref sfinfo) == 0 ) {
Console.WriteLine("sf_format_check failed. Invalid encoding");
return;
}
//open output file
IntPtr outfile = sf_open (ofn, (int)lsndf_tf.SFM_WRITE, ref sfinfo);
//exit if error was thrown
if ( (int)outfile == 0 ) {
Console.WriteLine("Error opening " + ofn);
Console.WriteLine("Error #" + sf_error(outfile));
return;
}
//infile -> outfile
Console.Write(sfn + " -> " + ofn);
while ( (rcnt = sf_read_float (infile, buffer, BUFFER_LEN)) > 0) {
Console.Write(".");
sf_write_float (outfile, buffer, BUFFER_LEN);
}
Console.WriteLine("done.");
//close up shop
sf_close(infile);
sf_close(outfile);
} //main()
} //class lsndf_example {}
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