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vp8: Allow for cyclic refresh even if error_resilience it off.

cyclic_refresh was tied to error_resilience mode.
Allow it to be on also for 1 pass CBR mode even if
error_resilience is off.

Other option to use new control for this, but prefer to avoid
that for now.

Change-Id: I3625b292ee059a890e31338b514e211bf0ab5c3e

--- a/vp8/encoder/onyx_if.c

+++ b/vp8/encoder/onyx_if.c

@@ -1766,9 +1766,11 @@

   cpi->mse_source_denoised = 0;

   /* Should we use the cyclic refresh method.

-   * Currently this is tied to error resilliant mode

+   * Currently there is no external control for this.

+   * Enable it for error_resilient_mode, or for 1 pass CBR mode.

    */

-  cpi->cyclic_refresh_mode_enabled = cpi->oxcf.error_resilient_mode;

+  cpi->cyclic_refresh_mode_enabled = (cpi->oxcf.error_resilient_mode ||

+      (cpi->oxcf.end_usage == USAGE_STREAM_FROM_SERVER && cpi->oxcf.Mode <= 2));

   cpi->cyclic_refresh_mode_max_mbs_perframe =

       (cpi->common.mb_rows * cpi->common.mb_cols) / 7;

   if (cpi->oxcf.number_of_layers == 1) {

-- 

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