VP9 denoiser used s/int/enum where appropriate

Change-Id: Id52a7869fd1f31bb060de170e3295da7435adb9e

vp9/encoder/vp9_denoiser.c

@@ -22,14 +22,13 @@ static void make_grayscale(YV12_BUFFER_CONFIG *yuv);
 static const int widths[]  = {4, 4, 8, 8,  8, 16, 16, 16, 32, 32, 32, 64, 64};
 static const int heights[] = {4, 8, 4, 8, 16,  8, 16, 32, 16, 32, 64, 32, 64};
 
-int vp9_denoiser_filter() {
-  return 0;
-}
-
-static int update_running_avg(const uint8_t *mc_avg, int mc_avg_stride,
-                              uint8_t *avg, int avg_stride,
-                              const uint8_t *sig, int sig_stride,
-                              int increase_denoising, BLOCK_SIZE bs) {
+static VP9_DENOISER_DECISION update_running_avg(const uint8_t *mc_avg,
+                                                int mc_avg_stride,
+                                                uint8_t *avg, int avg_stride,
+                                                const uint8_t *sig,
+                                                int sig_stride,
+                                                int increase_denoising,
+                                                BLOCK_SIZE bs) {
   int r, c;
   int diff, adj, absdiff;
   int shift_inc1 = 0, shift_inc2 = 1;
@@ -94,9 +93,12 @@ void copy_block(uint8_t *dest, int dest_stride,
   }
 }
 
-static int perform_motion_compensation(VP9_DENOISER *denoiser, MACROBLOCK *mb,
-                                       BLOCK_SIZE bs, int increase_denoising,
-                                       int mi_row, int mi_col) {
+static VP9_DENOISER_DECISION perform_motion_compensation(VP9_DENOISER *denoiser,
+                                                         MACROBLOCK *mb,
+                                                         BLOCK_SIZE bs,
+                                                         int increase_denoising,
+                                                         int mi_row,
+                                                         int mi_col) {
   // constants
   // TODO(tkopp): empirically determine good constants, or functions of block
   // size.
@@ -228,7 +230,7 @@ static int perform_motion_compensation(VP9_DENOISER *denoiser, MACROBLOCK *mb,
 
 void vp9_denoiser_denoise(VP9_DENOISER *denoiser, MACROBLOCK *mb,
                           int mi_row, int mi_col, BLOCK_SIZE bs) {
-  int decision = COPY_BLOCK;
+  VP9_DENOISER_DECISION decision = FILTER_BLOCK;
 
   YV12_BUFFER_CONFIG avg = denoiser->running_avg_y[INTRA_FRAME];
   YV12_BUFFER_CONFIG mc_avg = denoiser->mc_running_avg_y;

vp9/encoder/vp9_denoiser.h

@@ -18,10 +18,10 @@
 extern "C" {
 #endif
 
-enum vp9_denoiser_decision {
+typedef enum vp9_denoiser_decision {
   COPY_BLOCK,
   FILTER_BLOCK
-};
+} VP9_DENOISER_DECISION;
 
 typedef struct vp9_denoiser {
   YV12_BUFFER_CONFIG running_avg_y[MAX_REF_FRAMES];