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| author | Yunqing Wang <yunqingwang@google.com> | 2014-04-01 17:32:20 -0700 |
|---|---|---|
| committer | Yunqing Wang <yunqingwang@google.com> | 2014-04-08 17:03:02 -0700 |
| commit | 4e66293fcb5b4779490faf8f40300e7e0096640e (patch) | |
| tree | d770fe0a5fe94c6363be6a25c591208537d87ec5 /vp9/encoder/vp9_variance.c | |
| parent | 06159fcd18b3438bb703a2baff4019aa6393b267 (diff) | |
| download | libvpx-4e66293fcb5b4779490faf8f40300e7e0096640e.tar libvpx-4e66293fcb5b4779490faf8f40300e7e0096640e.tar.gz libvpx-4e66293fcb5b4779490faf8f40300e7e0096640e.tar.bz2 libvpx-4e66293fcb5b4779490faf8f40300e7e0096640e.zip | |
Use source frame difference to make partition decision
Calculate the difference variance between last source frame and
current source frame. The variance is calculated at 16x16 block
level. The variances are compared to several thresholds to decide
final partition sizes.
An adaptive strategy is implemented to decide using
SOURCE_VAR_BASED_PARTITION or FIXED_PARTITION based on motions
in the video. The switching test is done once every
search_type_check_frequency frames.
The selection of source_var_thresh needs to be investigated
further later.
RTC set Borg test showed 0.424% overall psnr gain, and 0.357%
ssim gain. For clips with large enough static area, the
encoding speedup is around 2% to 15%.
Change-Id: Id7d268f1d8cbca7fb8026aa4a53b3c77459dc156
Diffstat (limited to 'vp9/encoder/vp9_variance.c')
| -rw-r--r-- | vp9/encoder/vp9_variance.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/vp9/encoder/vp9_variance.c b/vp9/encoder/vp9_variance.c index 996f730ef..71867a938 100644 --- a/vp9/encoder/vp9_variance.c +++ b/vp9/encoder/vp9_variance.c @@ -417,6 +417,12 @@ unsigned int vp9_variance32x32_c(const uint8_t *src_ptr, return (var - (((int64_t)avg * avg) >> 10)); } +void vp9_get_sse_sum_16x16_c(const uint8_t *src_ptr, int source_stride, + const uint8_t *ref_ptr, int ref_stride, + unsigned int *sse, int *sum) { + variance(src_ptr, source_stride, ref_ptr, ref_stride, 16, 16, sse, sum); +} + unsigned int vp9_variance16x16_c(const uint8_t *src_ptr, int source_stride, const uint8_t *ref_ptr, |