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https://github.com/id-Software/Wolf3D-iOS.git
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145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/*
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Copyright (C) 2004 Michael Liebscher
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* wav.c: Handles wav files.
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*
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* Author: Michael Liebscher <johnnycanuck@users.sourceforge.net>
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* Date: 2004
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include "../../../common/arch.h"
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typedef struct
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{
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W8 riff[ 4 ];
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W32 TotalLength;
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W8 wave[ 8 ];
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W32 LengthFORMAT;
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W16 DataType;
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W16 ChannelNumbers;
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W32 SampleRate;
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W32 BytesPerSecond;
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W16 BytesPerSample;
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W16 BitsPerSample;
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W8 data[ 4 ];
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W32 LengthData;
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} wavheader_t;
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/*
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-----------------------------------------------------------------------------
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Function: write_wav() -Writes a wav file.
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Parameters: filename -[in] Pointer to a null-terminated string that
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specifies the name of the file to save as.
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data -[in] Pointer to audio data.
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size -[in] Length of audio data.
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channels -[in] Number of Channels (0x01 = Mono, 0x02 = Stereo).
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sample_rate -[in] Sample Rate in Hz
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sample_size -[in] Bytes Per Sample:
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1 = 8 bit Mono,
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2 = 8 bit Stereo or 16 bit Mono,
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4 = 16 bit Stereo
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Returns: Nothing.
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Notes:
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-----------------------------------------------------------------------------
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*/
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void
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write_wav( const char *filename, void *data, W32 size,
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W16 channels, W32 sample_rate,
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W16 sample_size )
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{
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wavheader_t header;
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FILE *handle;
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handle = fopen( filename, "wb" );
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if( handle == NULL )
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{
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printf( "unable to write wav file\n" );
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return;
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}
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// RIFF Chunk
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header.riff[ 0 ] = 'R';
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header.riff[ 1 ] = 'I';
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header.riff[ 2 ] = 'F';
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header.riff[ 3 ] = 'F';
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// Total Length Of Package To Follow
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header.TotalLength = size + 36;
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// Format Chunk
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header.wave[ 0 ] = 'W';
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header.wave[ 1 ] = 'A';
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header.wave[ 2 ] = 'V';
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header.wave[ 3 ] = 'E';
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header.wave[ 4 ] = 'f';
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header.wave[ 5 ] = 'm';
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header.wave[ 6 ] = 't';
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header.wave[ 7 ] = ' ';
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header.LengthFORMAT = 0x10; // Length Of FORMAT Chunk (always 0x10)
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header.DataType = 0x01; // Always 0x01
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// Channel Numbers (always 0x01 = Mono, 0x02 = Stereo)
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header.ChannelNumbers = channels;
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header.SampleRate = sample_rate; // Sample Rate in Hz
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header.BytesPerSecond = sample_rate * sample_size * channels;
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header.BytesPerSample = sample_size; // Bytes Per Sample: 1 = 8 bit Mono,
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// 2 = 8 bit Stereo or 16 bit Mono,
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// 4 = 16 bit Stereo
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header.BitsPerSample = sample_size * 8;
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// DATA Chunk
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header.data[ 0 ] = 'd';
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header.data[ 1 ] = 'a';
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header.data[ 2 ] = 't';
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header.data[ 3 ] = 'a';
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// Length Of Data To Follow
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header.LengthData = size;
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fwrite( &header, sizeof( W8 ), sizeof( wavheader_t ), handle );
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fwrite( data, sizeof( W8 ), size, handle );
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fclose( handle );
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}
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