vp9/rate_ctrl_rtc: Improve get cyclic refresh data

A client of the vp9 rate controller needs to know whether the
segmentation is enabled and the size of delta_q. It is also nicer to
know the size of map. This CL changes the interface to achieve these.

Bug: b:259487065
Test: Build

Change-Id: If05854530f97e1430a7b97788910f277ab673a87

2 files changed, 18 insertions, 8 deletions

diff --git a/vp9/ratectrl_rtc.cc b/vp9/ratectrl_rtc.cc
index f4d7f7e9e..a9287b5a3 100644
--- a/vp9/ratectrl_rtc.cc
+++ b/vp9/ratectrl_rtc.cc
@@ -205,12 +205,16 @@ int VP9RateControlRTC::GetLoopfilterLevel() const {
   return lf->filter_level;
 }
 
-signed char *VP9RateControlRTC::GetCyclicRefreshMap() const {
-  return cpi_->cyclic_refresh->map;
-}
-
-int *VP9RateControlRTC::GetDeltaQ() const {
-  return cpi_->cyclic_refresh->qindex_delta;
+bool VP9RateControlRTC::GetSegmentationData(
+    VP9SegmentationData *segmentation_data) const {
+  if (!cpi_->cyclic_refresh->apply_cyclic_refresh) return false;
+
+  segmentation_data->segmentation_map = cpi_->segmentation_map;
+  segmentation_data->segmentation_map_size =
+      cpi_->common.mi_cols * cpi_->common.mi_rows;
+  segmentation_data->delta_q = cpi_->cyclic_refresh->qindex_delta;
+  segmentation_data->delta_q_size = 3u;
+  return true;
 }
 
 void VP9RateControlRTC::PostEncodeUpdate(uint64_t encoded_frame_size) {
diff --git a/vp9/ratectrl_rtc.h b/vp9/ratectrl_rtc.h
index d2b9417ae..b209e4db6 100644
--- a/vp9/ratectrl_rtc.h
+++ b/vp9/ratectrl_rtc.h
@@ -58,6 +58,13 @@ struct VP9FrameParamsQpRTC {
   int temporal_layer_id;
 };
 
+struct VP9SegmentationData {
+  const uint8_t *segmentation_map;
+  size_t segmentation_map_size;
+  const int *delta_q;
+  size_t delta_q_size;
+};
+
 // This interface allows using VP9 real-time rate control without initializing
 // the encoder. To use this interface, you need to link with libvpxrc.a.
 //
@@ -110,8 +117,7 @@ class VP9RateControlRTC {
   // GetQP() needs to be called after ComputeQP() to get the latest QP
   int GetQP() const;
   int GetLoopfilterLevel() const;
-  signed char *GetCyclicRefreshMap() const;
-  int *GetDeltaQ() const;
+  bool GetSegmentationData(VP9SegmentationData *segmentation_data) const;
   void ComputeQP(const VP9FrameParamsQpRTC &frame_params);
   // Feedback to rate control with the size of current encoded frame
   void PostEncodeUpdate(uint64_t encoded_frame_size);