4
#include "speex_callbacks.h"
7
extern long long spx_mips;
10
#define FRAME_SIZE 160
12
int main(int argc, char **argv)
14
char *inFile, *outFile, *bitsFile;
15
FILE *fin, *fout, *fbits=NULL;
16
short in_short[FRAME_SIZE];
17
short out_short[FRAME_SIZE];
18
float in_float[FRAME_SIZE];
19
float sigpow,errpow,snr, seg_snr=0;
30
SpeexCallback callback;
35
st = speex_encoder_init(&speex_nb_mode);
36
dec = speex_decoder_init(&speex_nb_mode);
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);
49
speex_decoder_ctl(dec, SPEEX_SET_ENH, &tmp);
51
speex_encoder_ctl(st, SPEEX_SET_VBR, &tmp);
53
speex_encoder_ctl(st, SPEEX_SET_QUALITY, &tmp);
55
speex_encoder_ctl(st, SPEEX_SET_COMPLEXITY, &tmp);
57
speex_mode_query(&speex_nb_mode, SPEEX_MODE_FRAME_SIZE, &tmp);
58
fprintf (stderr, "frame size: %d\n", tmp);
59
skip_group_delay = tmp / 2;
61
if (argc != 4 && argc != 3)
63
fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
67
fin = fopen(inFile, "r");
69
fout = fopen(outFile, "w+");
73
fbits = fopen(bitsFile, "w");
75
speex_bits_init(&bits);
78
fread(in_short, sizeof(short), FRAME_SIZE, fin);
81
for (i=0;i<FRAME_SIZE;i++)
82
in_float[i]=in_short[i];
83
speex_bits_reset(&bits);
85
speex_encode(st, in_short, &bits);
86
nbBits = speex_bits_write(&bits, cbits, 200);
87
bitCount+=bits.nbBits;
90
fwrite(cbits, 1, nbBits, fbits);
91
speex_bits_rewind(&bits);
93
speex_decode(dec, &bits, out_short);
94
speex_bits_reset(&bits);
96
fwrite(&out_short[skip_group_delay], sizeof(short), FRAME_SIZE-skip_group_delay, fout);
99
fprintf (stderr, "Total encoded size: %d bits\n", bitCount);
100
speex_encoder_destroy(st);
101
speex_decoder_destroy(dec);
106
while ( FRAME_SIZE == fread(in_short, sizeof(short), FRAME_SIZE, fin)
108
FRAME_SIZE == fread(out_short, sizeof(short), FRAME_SIZE,fout) )
111
for (i=0;i<FRAME_SIZE;++i) {
112
s += (float)in_short[i] * in_short[i];
113
e += ((float)in_short[i]-out_short[i]) * ((float)in_short[i]-out_short[i]);
115
seg_snr += 10*log10((s+160)/(e+160));
123
snr = 10 * log10( sigpow / errpow );
124
seg_snr /= snr_frames;
125
fprintf(stderr,"SNR = %f\nsegmental SNR = %f\n",snr, seg_snr);
128
printf ("Total: %f MIPS\n", (float)(1e-6*50*spx_mips/snr_frames));