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Cleaning up vp9_get_pred_context_tx_size() function.

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Change-Id: Ia6ef876e3d1e66b2182a9c0bce3fd758691cd381
This commit is contained in:
Dmitry Kovalev 2013-12-04 21:35:30 -08:00
parent a1123538a5
commit 5eeffc9fc5
1 changed files with 13 additions and 22 deletions
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35
vp9/common/vp9_pred_common.c
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@ -369,31 +369,22 @@ unsigned char vp9_get_pred_context_single_ref_p2(const MACROBLOCKD *xd) {
// left of the entries corresponding to real blocks.
// The prediction flags in these dummy entries are initialized to 0.
unsigned char vp9_get_pred_context_tx_size(const MACROBLOCKD *xd) {
const MODE_INFO *const above_mi = get_above_mi(xd);
const MODE_INFO *const left_mi = get_left_mi(xd);
const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi);
const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi);
const int above_in_image = above_mi != NULL;
const int left_in_image = left_mi != NULL;
const int max_tx_size = max_txsize_lookup[xd->mi_8x8[0]->mbmi.sb_type];
int above_context = max_tx_size;
int left_context = max_tx_size;
const MB_MODE_INFO *const above_mbmi = get_above_mbmi(get_above_mi(xd));
const MB_MODE_INFO *const left_mbmi = get_left_mbmi(get_left_mi(xd));
const int has_above = above_mbmi != NULL;
const int has_left = left_mbmi != NULL;
int above_ctx = (has_above && !above_mbmi->skip_coeff) ? above_mbmi->tx_size
: max_tx_size;
int left_ctx = (has_left && !left_mbmi->skip_coeff) ? left_mbmi->tx_size
: max_tx_size;
if (!has_left)
left_ctx = above_ctx;
if (above_in_image)
above_context = above_mbmi->skip_coeff ? max_tx_size
: above_mbmi->tx_size;
if (!has_above)
above_ctx = left_ctx;
if (left_in_image)
left_context = left_mbmi->skip_coeff ? max_tx_size
: left_mbmi->tx_size;
if (!left_in_image)
left_context = above_context;
if (!above_in_image)
above_context = left_context;
return above_context + left_context > max_tx_size;
return (above_ctx + left_ctx) > max_tx_size;
}
int vp9_get_segment_id(VP9_COMMON *cm, const uint8_t *segment_ids,