coder.c

可在embeded linux 压缩AUDIO成为MP2 的测试程序

#include <stdio.h>
#include <stdlib.h>
#include "mpegaudio.h"

FILE *in, *out_f;
unsigned int frame_buf[1000];
unsigned int sample_buf[1152];
int main(int argc, char *argv[])
{
	int len;
	MpegAudioContext s;
	in = fopen(argv[1],"rb");
	out_f = fopen(argv[2],"wb");
	MPA_encode_init(&s, 48000, 64000, 2);
	while ((len=fread(&sample_buf, 1, 1152*4, in)) == 1152*4) {
		len = MPA_encode_frame(&s, (unsigned char *) frame_buf, 
		MPA_MAX_CODED_FRAME_SIZE, (unsigned char *) sample_buf, 4);
		fwrite(&frame_buf[0], 1, len, out_f);
	}
	fclose(in);
	fclose(out_f);
}