1 #ifdef HAVE_CONFIG_H
2 #include "config.h"
3 #endif
4
5 #include "speex.h"
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include "speex_callbacks.h"
9
10 #ifdef FIXED_DEBUG
11 extern long long spx_mips;
12 #endif
13
14 #define FRAME_SIZE 640
15 #include <math.h>
main(int argc,char ** argv)16 int main(int argc, char **argv)
17 {
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 in_float[FRAME_SIZE];
23 float sigpow,errpow,snr, seg_snr=0;
24 int snr_frames = 0;
25 char cbits[200];
26 int nbBits;
27 int i;
28 void *st;
29 void *dec;
30 SpeexBits bits;
31 int tmp;
32 int bitCount=0;
33 int skip_group_delay;
34 SpeexCallback callback;
35
36 sigpow = 0;
37 errpow = 0;
38
39 st = speex_encoder_init(&speex_uwb_mode);
40 dec = speex_decoder_init(&speex_uwb_mode);
41
42 callback.callback_id = SPEEX_INBAND_CHAR;
43 callback.func = speex_std_char_handler;
44 callback.data = stderr;
45 speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
46
47 callback.callback_id = SPEEX_INBAND_MODE_REQUEST;
48 callback.func = speex_std_mode_request_handler;
49 callback.data = st;
50 speex_decoder_ctl(dec, SPEEX_SET_HANDLER, &callback);
51
52 tmp=0;
53 speex_decoder_ctl(dec, SPEEX_SET_ENH, &tmp);
54 tmp=0;
55 speex_encoder_ctl(st, SPEEX_SET_VBR, &tmp);
56 tmp=7;
57 speex_encoder_ctl(st, SPEEX_SET_QUALITY, &tmp);
58 tmp=1;
59 speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
60
61 speex_mode_query(&speex_nb_mode, SPEEX_MODE_FRAME_SIZE, &tmp);
62 fprintf (stderr, "frame size: %d\n", tmp);
63 skip_group_delay = 509;
64
65 if (argc != 4 && argc != 3)
66 {
67 fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
68 exit(1);
69 }
70 inFile = argv[1];
71 fin = fopen(inFile, "r");
72 outFile = argv[2];
73 fout = fopen(outFile, "w+");
74 if (argc==4)
75 {
76 bitsFile = argv[3];
77 fbits = fopen(bitsFile, "w");
78 }
79 speex_bits_init(&bits);
80 while (!feof(fin))
81 {
82 fread(in_short, sizeof(short), FRAME_SIZE, fin);
83 if (feof(fin))
84 break;
85 for (i=0;i<FRAME_SIZE;i++)
86 in_float[i]=in_short[i];
87 speex_bits_reset(&bits);
88
89 speex_encode_int(st, in_short, &bits);
90 nbBits = speex_bits_write(&bits, cbits, 200);
91 bitCount+=bits.nbBits;
92
93 if (argc==4)
94 fwrite(cbits, 1, nbBits, fbits);
95 speex_bits_rewind(&bits);
96
97 speex_decode_int(dec, &bits, out_short);
98 speex_bits_reset(&bits);
99
100 fwrite(&out_short[skip_group_delay], sizeof(short), FRAME_SIZE-skip_group_delay, fout);
101 skip_group_delay = 0;
102 }
103 fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
104 speex_encoder_destroy(st);
105 speex_decoder_destroy(dec);
106
107 rewind(fin);
108 rewind(fout);
109
110 while ( FRAME_SIZE == fread(in_short, sizeof(short), FRAME_SIZE, fin)
111 &&
112 FRAME_SIZE == fread(out_short, sizeof(short), FRAME_SIZE,fout) )
113 {
114 float s=0, e=0;
115 for (i=0;i<FRAME_SIZE;++i) {
116 s += (float)in_short[i] * in_short[i];
117 e += ((float)in_short[i]-out_short[i]) * ((float)in_short[i]-out_short[i]);
118 }
119 seg_snr += 10*log10((s+1)/(e+1));
120 sigpow += s;
121 errpow += e;
122 snr_frames++;
123 }
124 fclose(fin);
125 fclose(fout);
126
127 snr = 10 * log10( sigpow / errpow );
128 seg_snr /= snr_frames;
129 fprintf(stderr,"SNR = %f\nsegmental SNR = %f\n",snr, seg_snr);
130
131 #ifdef FIXED_DEBUG
132 printf ("Total: %f MIPS\n", (float)(1e-6*50*spx_mips/snr_frames));
133 #endif
134
135 return 1;
136 }
137