Auto-adaptive encoder frame resizing logic

Note: This feature is still in development.

Add an option for the encoder to decide the resolution
at which to encode each frame.

Each KF/GF/ARF goup is tested to see if it would be
better encoded at a lower resolution. At present, each
KF/GF/ARF is coded first at full-size and if the coded
size exceeds a threshold (twice target data rate) at
the maximum active Q then the entire group is encoded
at lower resolution.

This feature is enabled in vpxenc by setting:
  --resize-allowed=1

In addition, if the vpxenc command line also specifies
valid frame dimensions using:
  --resize-width=XXXX & --resize_height=YYYY
then *all* frames will be encoded at this resolution.

Change-Id: I13f341e0a82512f9e84e144e0f3b5aed8a65402b

1 files changed, 4 insertions, 0 deletions

diff --git a/vp9/encoder/vp9_encoder.h b/vp9/encoder/vp9_encoder.h
index e0ed06b24..1e4c982ff 100644
--- a/vp9/encoder/vp9_encoder.h
+++ b/vp9/encoder/vp9_encoder.h
@@ -448,6 +448,8 @@ typedef struct VP9_COMP {
   VP9_DENOISER denoiser;
 #endif
 
+  int resize_pending;
+
   // Multi-threading
   int num_workers;
   VP9Worker *workers;
@@ -593,6 +595,8 @@ static INLINE int *cond_cost_list(const struct VP9_COMP *cpi, int *cost_list) {
   return cpi->sf.mv.subpel_search_method != SUBPEL_TREE ? cost_list : NULL;
 }
 
+void vp9_new_framerate(VP9_COMP *cpi, double framerate);
+
 #ifdef __cplusplus
 }  // extern "C"
 #endif