Put check to avoid possible out of bounds when looping
over the blocks to estimate noise level.
No change in behavior.

Change-Id: I4b7b19b7edee0ae1c35b9dc0700b1bf9b304d7f5

This is only used with CONFIG_VP9_TEMPORAL_DENOISING

Change-Id: I61a1814d43d71235077a2426f7bfce141677a79a

Add function to compute skin map for a given block, as its
used in several places (cyclic refresh, noise estimation, and denoising).

Change-Id: Ied622908df43b6927f7fafc6c019d1867f2a24eb

This reverts commit e15fedb9.

Change-Id: Ibf2bce008c727a9754f88814b7630095fa7b8253

Change-Id: I0fe95332ccfa2e1ad2a01a8e7ddd631289e0f8eb

This is so we may update level at any time (e.g., to be used
for setting thresholds in variance-based partition).

Change-Id: I32caad2271b8e03017a531f9ea456a6dbb9d49c7

Change initial state of noise level, and only update
denoiser with noise level when estimate is done.

Change-Id: If44090d29949d3e4927e855d88241634cdb395dc

Change-Id: I46abd85e2187b8f4c2846416a23fab26d9b9f67d

Change-Id: Ia1aba00603b32cee6835951d3d8f740937cf20f4

This reverts commit 6b79a1e3.

Change-Id: I5a4923ca8a6de842855ce0725e92567ccbed6fb7

Add frame level global check and adjust some parameters.

Change-Id: I42103394f2d329781195d94ce6cbb5b3383eea17

Change-Id: Idc755ab54e4f78bb7d75bc97634c451804edad99

Change-Id: I521f7b53c143d562a88fe7de330aa3f0ef09f414

Change-Id: I35767a6320943582ee11d737b5f240cea2d01b25

Add threshold/condition on spatial_variance and brightness level.
Modification to normalization of block variance.
Change resolution limit below which we disable noise estimation.

Change-Id: If5be08a26ceda351242d8a58d2f0bc88c0a918f0

Change-Id: Id5b8f597fb275395232559fea7bfeb56912b88a1

Source noise level estimate is also useful for
setting variance encoder parameters (variance thresholds,
qp-delta, mode selection, etc), so allow it to be used also
if denoising is not on.

Change-Id: I4fe23d47607b4e17a35287057f489c29114beed1