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Framework changes in nzc to allow more flexibility

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The patch adds the flexibility to use standard EOB based coding
on smaller block sizes and nzc based coding on larger blocksizes.
The tx-sizes that use nzc based coding and those that use EOB based
coding are controlled by a function get_nzc_used().
By default, this function uses nzc based coding for 16x16 and 32x32
transform blocks, which seem to bridge the performance gap
substantially.

All sets are now lower by 0.5% to 0.7%, as opposed to ~1.8% before.

Change-Id: I06abed3df57b52d241ea1f51b0d571c71e38fd0b
This commit is contained in:
Deb Mukherjee
2013-03-26 15:23:30 -07:00
parent 9ba8aed179
commit fe9b5143ba
11 changed files with 250 additions and 163 deletions
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6
vp9/encoder/vp9_encodeframe.c
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@@ -1958,9 +1958,10 @@ static void gather_nzcs_mb16(VP9_COMMON *const cm,
static void gather_nzcs_sb32(VP9_COMMON *const cm,
MACROBLOCKD *xd) {
int i, j;
MODE_INFO *m = xd->mode_info_context;
int mis = cm->mode_info_stride;
int i, j;
vpx_memset(m->mbmi.nzcs, 0,
384 * sizeof(xd->mode_info_context->mbmi.nzcs[0]));
switch (xd->mode_info_context->mbmi.txfm_size) {
@@ -2002,9 +2003,10 @@ static void gather_nzcs_sb32(VP9_COMMON *const cm,
static void gather_nzcs_sb64(VP9_COMMON *const cm,
MACROBLOCKD *xd) {
int i, j;
MODE_INFO *m = xd->mode_info_context;
int mis = cm->mode_info_stride;
int i, j;
vpx_memset(xd->mode_info_context->mbmi.nzcs, 0,
384 * sizeof(xd->mode_info_context->mbmi.nzcs[0]));
switch (xd->mode_info_context->mbmi.txfm_size) {