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changed to use a fixed number for update probabity

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This commit is to remove two arrays, which contain the probabilities
of how likely each probability in coef_probs table is updated. The
commit changed to use a fixed number "252".

Surprisedly, the overall impact on quality is close to zero, which
basically says the two big static arrays are not helpful at all.
derf: -0.016%, -0.020%
std-hd: 0.000%, -0.013%
yt: -0.022%, +0.007%
yt-hd: -0.038%, +0.034%

Change-Id: Ifee94d28a37dcab4f1d2b994bd5b07575be42b72
This commit is contained in:
Yaowu Xu
2012-05-24 12:02:12 -07:00
parent bb25083d65
commit 074a38b1fd
5 changed files with 93 additions and 565 deletions
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12
vp8/decoder/decodframe.c
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@@ -832,7 +832,7 @@ static void read_coef_probs3(VP8D_COMP *pbi)
#endif
{
vp8_prob *const p = pc->fc.coef_probs [i][j][k] + l;
int u = vp8_read(bc, vp8_coef_update_probs [i][j][k][l]);
int u = vp8_read(bc, COEF_UPDATE_PROB);
if (u) *p = read_prob_diff_update(bc, *p);
}
}
@@ -856,7 +856,7 @@ static void read_coef_probs3(VP8D_COMP *pbi)
#endif
{
vp8_prob *const p = pc->fc.coef_probs_8x8 [i][j][k] + l;
int u = vp8_read(bc, vp8_coef_update_probs_8x8 [i][j][k][l]);
int u = vp8_read(bc, COEF_UPDATE_PROB_8X8);
if (u) *p = read_prob_diff_update(bc, *p);
}
}
@@ -887,7 +887,7 @@ static void read_coef_probs2(VP8D_COMP *pbi)
#endif
{
vp8_prob *const p = pc->fc.coef_probs [i][j][k] + l;
int u = vp8_read(bc, vp8_coef_update_probs [i][j][k][l]);
int u = vp8_read(bc, COEF_UPDATE_PROB);
if (u) *p = read_prob_diff_update(bc, *p);
}
}
@@ -911,7 +911,7 @@ static void read_coef_probs2(VP8D_COMP *pbi)
{
vp8_prob *const p = pc->fc.coef_probs_8x8 [i][j][k] + l;
int u = vp8_read(bc, vp8_coef_update_probs_8x8 [i][j][k][l]);
int u = vp8_read(bc, COEF_UPDATE_PROB_8X8);
if (u) *p = read_prob_diff_update(bc, *p);
}
}
@@ -948,7 +948,7 @@ static void read_coef_probs(VP8D_COMP *pbi)
{
vp8_prob *const p = pc->fc.coef_probs [i][j][k] + l;
if (vp8_read(bc, vp8_coef_update_probs [i][j][k][l]))
if (vp8_read(bc, COEF_UPDATE_PROB))
{
#if CONFIG_NEWUPDATE
*p = read_prob_diff_update(bc, *p);
@@ -982,7 +982,7 @@ static void read_coef_probs(VP8D_COMP *pbi)
vp8_prob *const p = pc->fc.coef_probs_8x8 [i][j][k] + l;
if (vp8_read(bc, vp8_coef_update_probs_8x8 [i][j][k][l]))
if (vp8_read(bc, COEF_UPDATE_PROB_8X8))
{
#if CONFIG_NEWUPDATE
*p = read_prob_diff_update(bc, *p);