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detokenization speedups

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removed unnecessary ifs and branches ..

Change-Id: Id1698a35292659388f48926791024d1400f2cea9
This commit is contained in:
Jim Bankoski 2013-11-21 16:55:22 -08:00
parent b38e42fe9d
commit 70ffd5d055
1 changed files with 7 additions and 12 deletions
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19
vp9/decoder/vp9_detokenize.c
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@ -81,6 +81,7 @@ static const int token_to_counttoken[MAX_ENTROPY_TOKENS] = {
INCREMENT_COUNT(token); \
token_cache[scan[c]] = vp9_pt_energy_class[token]; \
++c; \
pt = get_coef_context(nb, token_cache, c); \
dqv = dq[1]; \
continue; \
}
@ -118,30 +119,24 @@ static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd,
while (c < seg_eob) {
int val;
if (c)
pt = get_coef_context(nb, token_cache, c);
band = *band_translate++;
prob = coef_probs[band][pt];
if (!cm->frame_parallel_decoding_mode)
++eob_branch_count[band][pt];
if (!vp9_read(r, prob[EOB_CONTEXT_NODE]))
break;
goto DECODE_ZERO;
SKIP_START:
if (c >= seg_eob)
break;
if (c)
pt = get_coef_context(nb, token_cache, c);
band = *band_translate++;
prob = coef_probs[band][pt];
DECODE_ZERO:
if (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) {
INCREMENT_COUNT(ZERO_TOKEN);
dqv = dq[1];
++c;
goto SKIP_START;
if (c >= seg_eob)
break;
pt = get_coef_context(nb, token_cache, c);
band = *band_translate++;
prob = coef_probs[band][pt];
goto DECODE_ZERO;
}
// ONE_CONTEXT_NODE_0_