5 #include <speex/speex.h>
8 #include <speex/speex_callbacks.h>
11 extern long long spx_mips;
14 #define FRAME_SIZE 320
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];
22 float sigpow,errpow,snr, seg_snr=0;
32 spx_int32_t skip_group_delay;
33 SpeexCallback callback;
38 st = speex_encoder_init(speex_lib_get_mode(SPEEX_MODEID_WB));
39 dec = speex_decoder_init(speex_lib_get_mode(SPEEX_MODEID_WB));
41 callback.callback_id = SPEEX_INBAND_CHAR;
42 callback.func = speex_std_char_handler;
43 callback.data = stderr;
44 speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
46 callback.callback_id = SPEEX_INBAND_MODE_REQUEST;
47 callback.func = speex_std_mode_request_handler;
49 speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
52 speex_decoder_ctl(dec, SPEEX_SET_ENH, &tmp);
54 speex_encoder_ctl(st, SPEEX_SET_VBR, &tmp);
56 speex_encoder_ctl(st, SPEEX_SET_QUALITY, &tmp);
58 speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
60 speex_encoder_ctl(st, SPEEX_SET_HIGH_MODE, &tmp);
62 speex_encoder_ctl(st, SPEEX_SET_LOW_MODE, &tmp);
65 speex_encoder_ctl(st, SPEEX_GET_LOOKAHEAD, &skip_group_delay);
66 speex_decoder_ctl(dec, SPEEX_GET_LOOKAHEAD, &tmp);
67 skip_group_delay += tmp;
70 if (argc != 4 && argc != 3)
72 fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
76 fin = fopen(inFile, "rb");
78 fout = fopen(outFile, "wb+");
82 fbits = fopen(bitsFile, "wb");
84 speex_bits_init(&bits);
87 fread(in_short, sizeof(short), FRAME_SIZE, fin);
90 speex_bits_reset(&bits);
92 speex_encode_int(st, in_short, &bits);
93 nbBits = speex_bits_write(&bits, cbits, 200);
94 bitCount+=bits.nbBits;
97 fwrite(cbits, 1, nbBits, fbits);
98 speex_bits_rewind(&bits);
100 speex_decode_int(dec, &bits, out_short);
101 speex_bits_reset(&bits);
103 fwrite(&out_short[skip_group_delay], sizeof(short), FRAME_SIZE-skip_group_delay, fout);
104 skip_group_delay = 0;
106 fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
107 speex_encoder_destroy(st);
108 speex_decoder_destroy(dec);
109 speex_bits_destroy(&bits);
114 while ( FRAME_SIZE == fread(in_short, sizeof(short), FRAME_SIZE, fin)
116 FRAME_SIZE == fread(out_short, sizeof(short), FRAME_SIZE,fout) )
119 for (i=0;i<FRAME_SIZE;++i) {
120 s += (float)in_short[i] * in_short[i];
121 e += ((float)in_short[i]-out_short[i]) * ((float)in_short[i]-out_short[i]);
123 seg_snr += 10*log10((s+160)/(e+160));
131 snr = 10 * log10( sigpow / errpow );
132 seg_snr /= snr_frames;
133 fprintf(stderr,"SNR = %f\nsegmental SNR = %f\n",snr, seg_snr);
136 printf ("Total: %f MIPS\n", (float)(1e-6*50*spx_mips/snr_frames));