Commit d915e4ee authored by Jingning Han's avatar Jingning Han
Browse files

Avoid using multiplication in context fetch

Replace the multiplication with shifts.

Change-Id: I245efaddea2019d789179569e82e81bb7cb97715
parent 8682cd91
......@@ -251,6 +251,7 @@ typedef enum ATTRIBUTE_PACKED {
#define MAX_TX_SQUARE (MAX_TX_SIZE * MAX_TX_SIZE)
// Pad 4 extra columns to remove horizontal availability check.
#define TX_PAD_HOR_LOG2 2
#define TX_PAD_HOR 4
// Pad 6 extra rows (2 on top and 4 on bottom) to remove vertical availability
// check.
......
......@@ -314,7 +314,6 @@ static const int sig_ref_offset_horiz[SIG_REF_OFFSET_NUM][2] = {
static INLINE int get_nz_count_mag(const uint8_t *const levels, const int bwl,
const int row, const int col,
const TX_CLASS tx_class, int *const mag) {
const int stride = (1 << bwl) + TX_PAD_HOR;
int count = 0;
*mag = 0;
for (int idx = 0; idx < SIG_REF_OFFSET_NUM; ++idx) {
......@@ -330,7 +329,8 @@ static INLINE int get_nz_count_mag(const uint8_t *const levels, const int bwl,
: sig_ref_offset_horiz[idx][1]));
const int ref_row = row + row_offset;
const int ref_col = col + col_offset;
const int nb_pos = ref_row * stride + ref_col;
const int nb_pos =
(ref_row << bwl) + (ref_row << TX_PAD_HOR_LOG2) + ref_col;
const int level = levels[nb_pos];
count += (level != 0);
#if 1
......
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