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Replace some operations with shift in encoder_breakout.

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Replaced a divide by 9 with 8, so some very small difference,
but otherwise no change in behavior.

Change-Id: I1079ae3c41e0789ff0bc6fa9940a238b6bca0f5b
This commit is contained in:
Marco 2015-02-13 10:42:57 -08:00
parent 1cfbc86e38
commit b1940bf5fe
1 changed files with 4 additions and 4 deletions
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8
vp9/encoder/vp9_pickmode.c
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@ -390,11 +390,11 @@ static void encode_breakout_test(VP9_COMP *cpi, MACROBLOCK *x,
const unsigned int min_thresh =
MIN(((unsigned int)x->encode_breakout << 4), max_thresh);
#if CONFIG_VP9_HIGHBITDEPTH
const int shift = 2 * xd->bd - 16;
const int shift = (xd->bd << 1) - 16;
#endif
// Calculate threshold according to dequant value.
thresh_ac = (xd->plane[0].dequant[1] * xd->plane[0].dequant[1]) / 9;
thresh_ac = (xd->plane[0].dequant[1] * xd->plane[0].dequant[1]) >> 3;
#if CONFIG_VP9_HIGHBITDEPTH
if ((xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) && shift > 0) {
thresh_ac = ROUND_POWER_OF_TWO(thresh_ac, shift);
@ -436,14 +436,14 @@ static void encode_breakout_test(VP9_COMP *cpi, MACROBLOCK *x,
xd->plane[1].dst.stride, &sse_u);
// U skipping condition checking
if ((var_u * 4 <= thresh_ac) && (sse_u - var_u <= thresh_dc)) {
if (((var_u << 2) <= thresh_ac) && (sse_u - var_u <= thresh_dc)) {
var_v = cpi->fn_ptr[uv_size].vf(x->plane[2].src.buf,
x->plane[2].src.stride,
xd->plane[2].dst.buf,
xd->plane[2].dst.stride, &sse_v);
// V skipping condition checking
if ((var_v * 4 <= thresh_ac) && (sse_v - var_v <= thresh_dc)) {
if (((var_v << 2) <= thresh_ac) && (sse_v - var_v <= thresh_dc)) {
x->skip = 1;
// The cost of skip bit needs to be added.