32 int i, flags1, flags2, block_align;
91 #if FF_API_OLD_ENCODE_AUDIO
108 const float * win = s->
windows[window_index];
110 float n = 2.0 * 32768.0 / window_len;
125 float v, *q, max_scale, *q_end;
133 v = pow(10, *exp_param++ * (1.0 / 16.0));
134 max_scale=
FFMAX(max_scale, v);
152 last_exp= *exp_param++;
153 assert(last_exp-10 >= 0 && last_exp-10 < 32);
159 int exp = *exp_param++;
160 int code = exp - last_exp + 60;
161 assert(code >= 0 && code < 120);
170 int v, bsize, ch, coef_nb_bits, parse_exponents;
173 static const int fixed_exp[25]={20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20};
195 mdct_norm = 1.0 / (float)n4;
197 mdct_norm *= sqrt(n4);
215 float *coefs, *exponents,
mult;
220 mult = pow(10, total_gain * 0.05) / s->
max_exponent[ch];
222 coefs = src_coefs[ch];
228 for(i = 0;i < n; i++){
229 double t= *coefs++ / (exponents[i] *
mult);
230 if(t<-32768 || t>32767)
233 coefs1[i] =
lrint(t);
249 for(v= total_gain-1; v>=127; v-= 127)
274 if (parse_exponents) {
295 eptr = ptr + nb_coefs[ch];
298 for(;ptr < eptr; ptr++){
301 int abs_level=
FFABS(level);
303 if(abs_level <= s->
coef_vlcs[tindex]->max_level){
304 if(run < s->
coef_vlcs[tindex]->levels[abs_level-1])
305 code= run + s->
int_table[tindex][abs_level-1];
312 if(1<<coef_nb_bits <= abs_level)
350 const AVFrame *frame,
int *got_packet_ptr)
353 int i, total_gain, ret;
365 a = s->
coefs[0][i]*0.5;
366 b = s->
coefs[1][i]*0.5;
392 if(scoreL <
FFMIN(best, scoreR)){
395 }
else if(scoreR < best){
404 "use a higher bit rate.\n");