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#include "speex.h"
#include <stdio.h>
#include <stdlib.h>
#include "speex_callbacks.h"
#define FRAME_SIZE 160
#include <math.h>
int main(int argc, char **argv)
{
char *inFile, *outFile, *bitsFile;
FILE *fin, *fout, *fbits=NULL;
short in[FRAME_SIZE];
float input[FRAME_SIZE], bak[FRAME_SIZE], bak2[FRAME_SIZE];
char cbits[200];
int nbBits;
int i;
void *st;
void *dec;
SpeexBits bits;
int tmp;
int bitCount=0;
SpeexCallback callback;
for (i=0;i<FRAME_SIZE;i++)
bak2[i]=0;
st = speex_encoder_init(&speex_nb_mode);
dec = speex_decoder_init(&speex_nb_mode);
callback.callback_id = SPEEX_INBAND_CHAR;
callback.func = speex_std_char_handler;
callback.data = stderr;
speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
callback.callback_id = SPEEX_INBAND_MODE_REQUEST;
callback.func = speex_std_mode_request_handler;
callback.data = st;
speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
tmp=0;
speex_decoder_ctl(dec, SPEEX_SET_ENH, &tmp);
tmp=0;
speex_encoder_ctl(st, SPEEX_SET_VBR, &tmp);
tmp=8;
speex_encoder_ctl(st, SPEEX_SET_QUALITY, &tmp);
tmp=1;
speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
speex_mode_query(&speex_nb_mode, SPEEX_MODE_FRAME_SIZE, &tmp);
fprintf (stderr, "frame size: %d\n", tmp);
if (argc != 4 && argc != 3)
{
fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
exit(1);
}
inFile = argv[1];
fin = fopen(inFile, "r");
outFile = argv[2];
fout = fopen(outFile, "w");
if (argc==4)
{
bitsFile = argv[3];
fbits = fopen(bitsFile, "w");
}
speex_bits_init(&bits);
while (!feof(fin))
{
fread(in, sizeof(short), FRAME_SIZE, fin);
if (feof(fin))
break;
for (i=0;i<FRAME_SIZE;i++)
bak[i]=input[i]=in[i];
speex_bits_reset(&bits);
/*
speex_bits_pack(&bits, 14, 5);
speex_bits_pack(&bits, SPEEX_INBAND_CHAR, 4);
speex_bits_pack(&bits, 'A', 8);
speex_bits_pack(&bits, 14, 5);
speex_bits_pack(&bits, SPEEX_INBAND_MODE_REQUEST, 4);
speex_bits_pack(&bits, 7, 4);
speex_bits_pack(&bits, 15, 5);
speex_bits_pack(&bits, 2, 4);
speex_bits_pack(&bits, 0, 16);
*/
speex_encode(st, input, &bits);
nbBits = speex_bits_write(&bits, cbits, 200);
bitCount+=bits.nbBits;
printf ("Encoding frame in %d bits\n", nbBits*8);
if (argc==4)
fwrite(cbits, 1, nbBits, fbits);
{
float enoise=0, esig=0, snr;
for (i=0;i<FRAME_SIZE;i++)
{
enoise+=(bak2[i]-input[i])*(bak2[i]-input[i]);
esig += bak2[i]*bak2[i];
}
snr = 10*log10((esig+1)/(enoise+1));
printf ("real SNR = %f\n", snr);
}
speex_bits_rewind(&bits);
speex_decode(dec, &bits, input);
/* Save the bits here */
for (i=0;i<FRAME_SIZE;i++)
{
if (input[i]>32000)
input[i]=32000;
else if (input[i]<-32000)
input[i]=-32000;
}
speex_bits_reset(&bits);
for (i=0;i<FRAME_SIZE;i++)
in[i]=(short)input[i];
for (i=0;i<FRAME_SIZE;i++)
bak2[i]=bak[i];
fwrite(in, sizeof(short), FRAME_SIZE, fout);
}
fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
speex_encoder_destroy(st);
speex_decoder_destroy(dec);
return 1;
}
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