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indeo: Refactor ff_ivi_dec_huff_desc

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Spare an indentation level.
This commit is contained in:
Luca Barbato 2013-07-03 12:58:40 +02:00
parent e6d8acf6a8
commit f6f36ca8ca
1 changed files with 35 additions and 33 deletions
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68
libavcodec/ivi_common.c
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@ -156,41 +156,43 @@ int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
if (!desc_coded) {
/* select default table */
huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[7]
: &ivi_mb_vlc_tabs [7];
} else {
huff_tab->tab_sel = get_bits(gb, 3);
if (huff_tab->tab_sel == 7) {
/* custom huffman table (explicitly encoded) */
new_huff.num_rows = get_bits(gb, 4);
if (!new_huff.num_rows) {
av_log(avctx, AV_LOG_ERROR, "Empty custom Huffman table!\n");
return AVERROR_INVALIDDATA;
}
: &ivi_mb_vlc_tabs [7];
return 0;
}
for (i = 0; i < new_huff.num_rows; i++)
new_huff.xbits[i] = get_bits(gb, 4);
/* Have we got the same custom table? Rebuild if not. */
if (ivi_huff_desc_cmp(&new_huff, &huff_tab->cust_desc)) {
ivi_huff_desc_copy(&huff_tab->cust_desc, &new_huff);
if (huff_tab->cust_tab.table)
ff_free_vlc(&huff_tab->cust_tab);
result = ivi_create_huff_from_desc(&huff_tab->cust_desc,
&huff_tab->cust_tab, 0);
if (result) {
huff_tab->cust_desc.num_rows = 0; // reset faulty description
av_log(avctx, AV_LOG_ERROR,
"Error while initializing custom vlc table!\n");
return result;
}
}
huff_tab->tab = &huff_tab->cust_tab;
} else {
/* select one of predefined tables */
huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[huff_tab->tab_sel]
: &ivi_mb_vlc_tabs [huff_tab->tab_sel];
huff_tab->tab_sel = get_bits(gb, 3);
if (huff_tab->tab_sel == 7) {
/* custom huffman table (explicitly encoded) */
new_huff.num_rows = get_bits(gb, 4);
if (!new_huff.num_rows) {
av_log(avctx, AV_LOG_ERROR, "Empty custom Huffman table!\n");
return AVERROR_INVALIDDATA;
}
for (i = 0; i < new_huff.num_rows; i++)
new_huff.xbits[i] = get_bits(gb, 4);
/* Have we got the same custom table? Rebuild if not. */
if (ivi_huff_desc_cmp(&new_huff, &huff_tab->cust_desc)) {
ivi_huff_desc_copy(&huff_tab->cust_desc, &new_huff);
if (huff_tab->cust_tab.table)
ff_free_vlc(&huff_tab->cust_tab);
result = ivi_create_huff_from_desc(&huff_tab->cust_desc,
&huff_tab->cust_tab, 0);
if (result) {
// reset faulty description
huff_tab->cust_desc.num_rows = 0;
av_log(avctx, AV_LOG_ERROR,
"Error while initializing custom vlc table!\n");
return result;
}
}
huff_tab->tab = &huff_tab->cust_tab;
} else {
/* select one of predefined tables */
huff_tab->tab = (which_tab) ? &ivi_blk_vlc_tabs[huff_tab->tab_sel]
: &ivi_mb_vlc_tabs [huff_tab->tab_sel];
}
return 0;