5 #include <speex/speex.h>
8 #include <speex/speex_callbacks.h>
11 extern long long spx_mips;
14 #define FRAME_SIZE 160
16 int main(int argc, char **argv)
18 char *inFile, *outFile, *bitsFile;
19 FILE *fin, *fout, *fbits=NULL;
20 short in_short[FRAME_SIZE];
21 short out_short[FRAME_SIZE];
31 spx_int32_t skip_group_delay;
32 SpeexCallback callback;
34 st = speex_encoder_init(speex_lib_get_mode(SPEEX_MODEID_NB));
35 dec = speex_decoder_init(speex_lib_get_mode(SPEEX_MODEID_NB));
37 /* BEGIN: You probably don't need the following in a real application */
38 callback.callback_id = SPEEX_INBAND_CHAR;
39 callback.func = speex_std_char_handler;
40 callback.data = stderr;
41 speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
43 callback.callback_id = SPEEX_INBAND_MODE_REQUEST;
44 callback.func = speex_std_mode_request_handler;
46 speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
47 /* END of unnecessary stuff */
50 speex_decoder_ctl(dec, SPEEX_SET_ENH, &tmp);
52 speex_encoder_ctl(st, SPEEX_SET_VBR, &tmp);
54 speex_encoder_ctl(st, SPEEX_SET_QUALITY, &tmp);
56 speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
58 /* Turn this off if you want to measure SNR (on by default) */
60 speex_encoder_ctl(st, SPEEX_SET_HIGHPASS, &tmp);
61 speex_decoder_ctl(dec, SPEEX_SET_HIGHPASS, &tmp);
63 speex_encoder_ctl(st, SPEEX_GET_LOOKAHEAD, &skip_group_delay);
64 speex_decoder_ctl(dec, SPEEX_GET_LOOKAHEAD, &tmp);
65 skip_group_delay += tmp;
67 if (argc != 4 && argc != 3)
69 fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
73 fin = fopen(inFile, "rb");
75 fout = fopen(outFile, "wb+");
79 fbits = fopen(bitsFile, "wb");
81 speex_bits_init(&bits);
84 fread(in_short, sizeof(short), FRAME_SIZE, fin);
87 speex_bits_reset(&bits);
89 speex_encode_int(st, in_short, &bits);
90 nbBits = speex_bits_write(&bits, cbits, 200);
91 bitCount+=bits.nbBits;
94 fwrite(cbits, 1, nbBits, fbits);
95 speex_bits_rewind(&bits);
97 speex_decode_int(dec, &bits, out_short);
98 speex_bits_reset(&bits);
100 fwrite(&out_short[skip_group_delay], sizeof(short), FRAME_SIZE-skip_group_delay, fout);
101 skip_group_delay = 0;
103 fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
104 speex_encoder_destroy(st);
105 speex_decoder_destroy(dec);
106 speex_bits_destroy(&bits);
108 #ifndef DISABLE_FLOAT_API
110 float sigpow,errpow,snr, seg_snr=0;
114 /* This code just computes SNR, so you don't need it either */
118 while ( FRAME_SIZE == fread(in_short, sizeof(short), FRAME_SIZE, fin)
120 FRAME_SIZE == fread(out_short, sizeof(short), FRAME_SIZE,fout) )
123 for (i=0;i<FRAME_SIZE;++i) {
124 s += (float)in_short[i] * in_short[i];
125 e += ((float)in_short[i]-out_short[i]) * ((float)in_short[i]-out_short[i]);
127 seg_snr += 10*log10((s+160)/(e+160));
132 snr = 10 * log10( sigpow / errpow );
133 seg_snr /= snr_frames;
134 fprintf(stderr,"SNR = %f\nsegmental SNR = %f\n",snr, seg_snr);
137 printf ("Total: %f MIPS\n", (float)(1e-6*50*spx_mips/snr_frames));