shithub: libvpx

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Assign estimate qp for overlay frame

Assign the estimated qp for the overlay frame too. Cap the minimum
quantization parameter to be 1 to avoid lossless coding in the
temporal dependency model setup.

Change-Id: I8acbc7182045dbf3017b6712a119b18407b76ab0

--- a/vp9/encoder/vp9_ratectrl.c

+++ b/vp9/encoder/vp9_ratectrl.c

@@ -1443,7 +1443,7 @@

   int idx;

   const int gf_index = cpi->twopass.gf_group.index;

-  for (idx = 1; idx <= gop_length; ++idx) {

+  for (idx = 1; idx <= gop_length + 1 && idx < MAX_LAG_BUFFERS; ++idx) {

     TplDepFrame *tpl_frame = &cpi->tpl_stats[idx];

     int target_rate = cpi->twopass.gf_group.bit_allocation[idx];

     cpi->twopass.gf_group.index = idx;

@@ -1451,6 +1451,7 @@

     vp9_configure_buffer_updates(cpi, idx);

     tpl_frame->base_qindex =

         rc_pick_q_and_bounds_two_pass(cpi, &bottom_index, &top_index, idx);

+    tpl_frame->base_qindex = VPXMAX(tpl_frame->base_qindex, 1);

   }

   // Reset the actual index and frame update

   cpi->twopass.gf_group.index = gf_index;