int
VBR_noise_shaping(lame_internal_flags * gfc, const FLOAT8 * xr34orig, int minbits, int maxbits,
const III_psy_xmin * l3_xmin, int gr, int ch)
{
FLOAT8 xr34[576];
int ret, bits, huffbits;
gr_info *cod_info = &gfc->l3_side.tt[gr][ch];
switch (cod_info->block_type) {
default:
ret = long_block_shaping(gfc, xr34orig, xr34, minbits, maxbits, l3_xmin, gr, ch);
break;
case SHORT_TYPE:
ret = short_block_shaping(gfc, xr34orig, xr34, minbits, maxbits, l3_xmin, gr, ch);
break;
}
if (ret == -1) /* Houston, we have a problem */
return -1;
if (cod_info->part2_3_length < minbits) {
huffbits = minbits - cod_info->part2_length;
bits = bin_search_StepSize(gfc, cod_info, huffbits, gfc->OldValue[ch], xr34);
gfc->OldValue[ch] = cod_info->global_gain;
cod_info->part2_3_length = bits + cod_info->part2_length;
if (gfc->use_best_huffman == 1) {
best_huffman_divide(gfc, cod_info);
}
}
if (cod_info->part2_3_length > maxbits) {
huffbits = maxbits - cod_info->part2_length;
if (huffbits < 0)
huffbits = 0;
bits = bin_search_StepSize(gfc, cod_info, huffbits, gfc->OldValue[ch], xr34);
gfc->OldValue[ch] = cod_info->global_gain;
while (bits > huffbits) {
++cod_info->global_gain;
bits = count_bits(gfc, cod_info->l3_enc, xr34, cod_info);
}
cod_info->part2_3_length = bits;
if (bits >= LARGE_BITS) /* Houston, we have a problem */
return -2;
cod_info->part2_3_length += cod_info->part2_length;
if (gfc->use_best_huffman == 1) {
best_huffman_divide(gfc, cod_info);
}
}
if (cod_info->part2_length >= LARGE_BITS) /* Houston, we have a problem */
return -2;
assert(cod_info->global_gain < 256);
return 0;
}
int shine_outer_loop( int max_bits,
shine_psy_xmin_t *l3_xmin, /* the allowed distortion of the scalefactor */
int ix[GRANULE_SIZE], /* vector of quantized values ix(0..575) */
int gr, int ch, shine_global_config *config)
{
int bits, huff_bits;
shine_side_info_t *side_info = &config->side_info;
gr_info *cod_info = &side_info->gr[gr].ch[ch].tt;
cod_info->quantizerStepSize = bin_search_StepSize(max_bits,ix,cod_info, config);
cod_info->part2_length = part2_length(gr,ch,config);
huff_bits = max_bits - cod_info->part2_length;
bits = shine_inner_loop(ix, huff_bits, cod_info, gr, ch, config );
cod_info->part2_3_length = cod_info->part2_length + bits;
return cod_info->part2_3_length;
}
static int outer_loop( int max_bits,
L3_psy_xmin_t *l3_xmin, /* the allowed distortion of the scalefactor */
int ix[samp_per_frame2], /* vector of quantized values ix(0..575) */
L3_scalefac_t *scalefac, /* scalefactors */
int gr, int ch, L3_side_info_t *side_info )
{
int bits, huff_bits;
gr_info *cod_info = &side_info->gr[gr].ch[ch].tt;
cod_info->quantizerStepSize = bin_search_StepSize(max_bits,ix,cod_info);
cod_info->part2_length = part2_length(scalefac,gr,ch,side_info);
huff_bits = max_bits - cod_info->part2_length;
bits = inner_loop(ix, huff_bits, cod_info, gr, ch );
cod_info->part2_length = part2_length(scalefac,gr,ch,side_info);
cod_info->part2_3_length = cod_info->part2_length + bits;
return cod_info->part2_3_length;
}
