static int
VBR_quantize_granule(lame_internal_flags * gfc, gr_info * cod_info, FLOAT8 * xr34, int gr, int ch)
{
int status;
/* encode scalefacs */
if (gfc->is_mpeg1)
status = scale_bitcount(&cod_info->scalefac, cod_info);
else
status = scale_bitcount_lsf(gfc, &cod_info->scalefac, cod_info);
if (status != 0) {
return -1;
}
/* quantize xr34 */
cod_info->part2_3_length = count_bits(gfc, cod_info->l3_enc, xr34, cod_info);
if (cod_info->part2_3_length >= LARGE_BITS)
return -2;
cod_info->part2_3_length += cod_info->part2_length;
if (gfc->use_best_huffman == 1) {
best_huffman_divide(gfc, cod_info);
}
return 0;
}
/*
Find the optimal way to store the scalefactors.
Only call this routine after final scalefactors have been
chosen and the channel/granule will not be re-encoded.
*/
void best_scalefac_store(
const lame_internal_flags *gfc,
const int gr,
const int ch,
int l3_enc[2][2][576],
III_side_info_t * const l3_side,
III_scalefac_t scalefac[2][2] )
{
/* use scalefac_scale if we can */
gr_info *gi = &l3_side->gr[gr].ch[ch].tt;
int sfb,i,j,j2,l,start,end;
/* remove scalefacs from bands with ix=0. This idea comes
* from the AAC ISO docs. added mt 3/00 */
/* check if l3_enc=0 */
for ( sfb = 0; sfb < gi->sfb_lmax; sfb++ ) {
if (scalefac[gr][ch].l[sfb]>0) {
start = gfc->scalefac_band.l[ sfb ];
end = gfc->scalefac_band.l[ sfb+1 ];
for ( l = start; l < end; l++ ) if (l3_enc[gr][ch][l]!=0) break;
if (l==end) scalefac[gr][ch].l[sfb]=0;
}
}
for ( j=0, sfb = gi->sfb_smin; sfb < SBPSY_s; sfb++ ) {
start = gfc->scalefac_band.s[ sfb ];
end = gfc->scalefac_band.s[ sfb+1 ];
for ( i = 0; i < 3; i++ ) {
if (scalefac[gr][ch].s[sfb][i]>0) {
j2 = j;
for ( l = start; l < end; l++ )
if (l3_enc[gr][ch][j2++ /*3*l+i*/]!=0) break;
if (l==end) scalefac[gr][ch].s[sfb][i]=0;
}
j += end-start;
}
}
gi->part2_3_length -= gi->part2_length;
if (!gi->scalefac_scale && !gi->preflag) {
int b, s = 0;
for (sfb = 0; sfb < gi->sfb_lmax; sfb++) {
s |= scalefac[gr][ch].l[sfb];
}
for (sfb = gi->sfb_smin; sfb < SBPSY_s; sfb++) {
for (b = 0; b < 3; b++) {
s |= scalefac[gr][ch].s[sfb][b];
}
}
if (!(s & 1) && s != 0) {
for (sfb = 0; sfb < gi->sfb_lmax; sfb++) {
scalefac[gr][ch].l[sfb] /= 2;
}
for (sfb = gi->sfb_smin; sfb < SBPSY_s; sfb++) {
for (b = 0; b < 3; b++) {
scalefac[gr][ch].s[sfb][b] /= 2;
}
}
gi->scalefac_scale = 1;
gi->part2_length = 99999999;
if (gfc->mode_gr == 2) {
scale_bitcount(&scalefac[gr][ch], gi);
} else {
scale_bitcount_lsf(gfc,&scalefac[gr][ch], gi);
}
}
}
for ( i = 0; i < 4; i++ )
l3_side->scfsi[ch][i] = 0;
if (gfc->mode_gr==2 && gr == 1
&& l3_side->gr[0].ch[ch].tt.block_type != SHORT_TYPE
&& l3_side->gr[1].ch[ch].tt.block_type != SHORT_TYPE) {
scfsi_calc(ch, l3_side, scalefac);
}
gi->part2_3_length += gi->part2_length;
}
