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107 lines
2.8 KiB
107 lines
2.8 KiB
14 years ago
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#include "speex.h"
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#include <stdio.h>
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#include <stdlib.h>
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#define FRAME_SIZE 320
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#include <math.h>
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int main(int argc, char **argv)
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{
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char *inFile, *outFile, *bitsFile;
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FILE *fin, *fout, *fbits=NULL;
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short in[FRAME_SIZE];
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float input[FRAME_SIZE], bak[FRAME_SIZE], bak2[FRAME_SIZE];
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char cbits[200];
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int nbBits;
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int i;
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void *st;
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void *dec;
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SpeexBits bits;
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int tmp;
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int bitCount=0;
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for (i=0;i<FRAME_SIZE;i++)
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bak2[i]=0;
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st = speex_encoder_init(&speex_wb_mode);
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dec = speex_decoder_init(&speex_wb_mode);
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tmp=0;
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speex_decoder_ctl(dec, SPEEX_SET_ENH, &tmp);
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tmp=0;
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speex_encoder_ctl(st, SPEEX_SET_VBR, &tmp);
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tmp=10;
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speex_encoder_ctl(st, SPEEX_SET_QUALITY, &tmp);
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tmp=3;
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speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
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tmp=3;
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speex_encoder_ctl(st, SPEEX_SET_HIGH_MODE, &tmp);
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tmp=6;
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speex_encoder_ctl(st, SPEEX_SET_LOW_MODE, &tmp);
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if (argc != 4 && argc != 3)
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{
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fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
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exit(1);
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}
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inFile = argv[1];
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fin = fopen(inFile, "r");
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outFile = argv[2];
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fout = fopen(outFile, "w");
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if (argc==4)
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{
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bitsFile = argv[3];
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fbits = fopen(bitsFile, "w");
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}
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speex_bits_init(&bits);
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while (!feof(fin))
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{
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fread(in, sizeof(short), FRAME_SIZE, fin);
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if (feof(fin))
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break;
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for (i=0;i<FRAME_SIZE;i++)
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bak[i]=input[i]=in[i];
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speex_bits_reset(&bits);
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speex_encode(st, input, &bits);
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nbBits = speex_bits_write(&bits, cbits, 200);
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bitCount+=bits.nbBits;
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printf ("Encoding frame in %d bits\n", nbBits*8);
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if (argc==4)
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fwrite(cbits, 1, nbBits, fbits);
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{
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float enoise=0, esig=0, snr;
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for (i=0;i<FRAME_SIZE;i++)
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{
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enoise+=(bak2[i]-input[i])*(bak2[i]-input[i]);
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esig += bak2[i]*bak2[i];
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}
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snr = 10*log10((esig+1)/(enoise+1));
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printf ("real SNR = %f\n", snr);
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}
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speex_bits_rewind(&bits);
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speex_decode(dec, &bits, input);
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/* Save the bits here */
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for (i=0;i<FRAME_SIZE;i++)
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{
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if (input[i]>32000)
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input[i]=32000;
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else if (input[i]<-32000)
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input[i]=-32000;
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}
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speex_bits_reset(&bits);
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for (i=0;i<FRAME_SIZE;i++)
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in[i]=(short)input[i];
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for (i=0;i<FRAME_SIZE;i++)
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bak2[i]=bak[i];
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fwrite(in, sizeof(short), FRAME_SIZE, fout);
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}
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fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
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speex_encoder_destroy(st);
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speex_decoder_destroy(dec);
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speex_bits_destroy(&bits);
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fclose(fin);
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fclose(fout);
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return 1;
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}
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