text: #ifdef HAVE_CONFIG_H
  #include "config.h"
  #endif
  
  #include <speex/speex.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <speex/speex_callbacks.h>
  
  #ifdef FIXED_DEBUG
  extern long long spx_mips;
  #endif
  
  #define FRAME_SIZE 320
  #include <math.h>
  int main(int argc, char **argv)
  {
     char *inFile, *outFile, *bitsFile;
     FILE *fin, *fout, *fbits=NULL;
     short in_short[FRAME_SIZE];
     short out_short[FRAME_SIZE];
     float sigpow,errpow,snr, seg_snr=0;
     int snr_frames = 0;
     char cbits[200];
     int nbBits;
     int i;
     void *st;
     void *dec;
     SpeexBits bits;
     spx_int32_t tmp;
     int bitCount=0;
     spx_int32_t skip_group_delay;
     SpeexCallback callback;
  
     sigpow = 0;
     errpow = 0;
  
     st = speex_encoder_init(speex_lib_get_mode(SPEEX_MODEID_WB));
     dec = speex_decoder_init(speex_lib_get_mode(SPEEX_MODEID_WB));
  
     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=1;
     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=3;
     speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
     /*tmp=3;
     speex_encoder_ctl(st, SPEEX_SET_HIGH_MODE, &tmp);
     tmp=6;
     speex_encoder_ctl(st, SPEEX_SET_LOW_MODE, &tmp);
  */
  
     speex_encoder_ctl(st, SPEEX_GET_LOOKAHEAD, &skip_group_delay);
     speex_decoder_ctl(dec, SPEEX_GET_LOOKAHEAD, &tmp);
     skip_group_delay += 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, "rb");
     outFile = argv[2];
     fout = fopen(outFile, "wb+");
     if (argc==4)
     {
        bitsFile = argv[3];
        fbits = fopen(bitsFile, "wb");
     }
     speex_bits_init(&bits);
     while (!feof(fin))
     {
        fread(in_short, sizeof(short), FRAME_SIZE, fin);
        if (feof(fin))
           break;
        speex_bits_reset(&bits);
  
        speex_encode_int(st, in_short, &bits);
        nbBits = speex_bits_write(&bits, cbits, 200);
        bitCount+=bits.nbBits;
  
        if (argc==4)
           fwrite(cbits, 1, nbBits, fbits);
        speex_bits_rewind(&bits);
  
        speex_decode_int(dec, &bits, out_short);
        speex_bits_reset(&bits);
  
        fwrite(&out_short[skip_group_delay], sizeof(short), FRAME_SIZE-skip_group_delay, fout);
        skip_group_delay = 0;
     }
     fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
     speex_encoder_destroy(st);
     speex_decoder_destroy(dec);
     speex_bits_destroy(&bits);
  
     rewind(fin);
     rewind(fout);
  
     while ( FRAME_SIZE == fread(in_short, sizeof(short), FRAME_SIZE, fin) 
             &&
             FRAME_SIZE ==  fread(out_short, sizeof(short), FRAME_SIZE,fout) )
     {
  	float s=0, e=0;
          for (i=0;i<FRAME_SIZE;++i) {
              s += (float)in_short[i] * in_short[i];
              e += ((float)in_short[i]-out_short[i]) * ((float)in_short[i]-out_short[i]);
          }
  	seg_snr += 10*log10((s+160)/(e+160));
  	sigpow += s;
  	errpow += e;
  	snr_frames++;
     }
     fclose(fin);
     fclose(fout);
  
     snr = 10 * log10( sigpow / errpow );
     seg_snr /= snr_frames;
     fprintf(stderr,"SNR = %f\nsegmental SNR = %f\n",snr, seg_snr);
  
  #ifdef FIXED_DEBUG
     printf ("Total: %f MIPS\n", (float)(1e-6*50*spx_mips/snr_frames));
  #endif
     
     return 1;
  }
  