?? riffwave.h
字號:
typedef struct wav_hdr {
unsigned int magic;
unsigned int length;
unsigned int chunk_type;
unsigned int chunk_format;
unsigned int chunk_length;
unsigned short format;
unsigned short channels;
unsigned int sample_rate;
unsigned int bytes_per_second;
unsigned short sample_size;
unsigned short precision;
unsigned int chunk_data;
unsigned int data_length;
};
/* little and big-endian handling - RIFF/WAV files are always stored in BigEndian */
union swap {
unsigned long ul;
unsigned char uc[4];
unsigned short us;
};
static __inline unsigned short sswap (unsigned short us) {
union swap ul1, ul2;
ul1.us = us;
ul2.uc[0] = ul1.uc[1];
ul2.uc[1] = ul1.uc[0];
return (ul2.us);
}
static __inline unsigned long lswap (unsigned long ul) {
union swap ul1, ul2;
ul1.ul = ul;
ul2.uc[0] = ul1.uc[3];
ul2.uc[1] = ul1.uc[2];
ul2.uc[2] = ul1.uc[1];
ul2.uc[3] = ul1.uc[0];
return (ul2.ul);
}
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