74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
/* WAVE sound file writer for recording 16-bit output during program development */
|
|
|
|
#ifndef WAVE_WRITER_H
|
|
#define WAVE_WRITER_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* C interface */
|
|
void wave_open( long sample_rate, const char* filename );
|
|
void wave_enable_stereo( void );
|
|
void wave_write( const short* buf, long count );
|
|
long wave_sample_count( void );
|
|
void wave_close( void );
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
|
|
/* C++ interface */
|
|
class Wave_Writer {
|
|
public:
|
|
typedef short sample_t;
|
|
|
|
// Create sound file with given sample rate (in Hz) and filename.
|
|
// Exits program if there's an error.
|
|
Wave_Writer( long sample_rate, char const* filename = "out.wav" );
|
|
|
|
// Enable stereo output
|
|
void enable_stereo();
|
|
|
|
// Append 'count' samples to file. Use every 'skip'th source sample; allows
|
|
// one channel of stereo sample pairs to be written by specifying a skip of 2.
|
|
void write( const sample_t*, long count, int skip = 1 );
|
|
|
|
// Append 'count' floating-point samples to file. Use every 'skip'th source sample;
|
|
// allows one channel of stereo sample pairs to be written by specifying a skip of 2.
|
|
void write( const float*, long count, int skip = 1 );
|
|
|
|
// Number of samples written so far
|
|
long sample_count() const;
|
|
|
|
// Finish writing sound file and close it
|
|
void close();
|
|
|
|
~Wave_Writer();
|
|
public:
|
|
// Deprecated
|
|
void stereo( bool b ) { chan_count = b ? 2 : 1; }
|
|
private:
|
|
enum { buf_size = 32768 * 2 };
|
|
unsigned char* buf;
|
|
FILE* file;
|
|
long sample_count_;
|
|
long rate;
|
|
long buf_pos;
|
|
int chan_count;
|
|
|
|
void flush();
|
|
};
|
|
|
|
inline void Wave_Writer::enable_stereo() { chan_count = 2; }
|
|
|
|
inline long Wave_Writer::sample_count() const { return sample_count_; }
|
|
|
|
#endif
|
|
|
|
#endif
|