optical_flow.c: remove unused get_subpixels()
quiets a warning from clang:
av1/encoder/optical_flow.c:71:23: warning: unused function
'get_subpixels' [-Wunused-function]
static AOM_INLINE int get_subpixels(const YV12_BUFFER_CONFIG *frame, int *pred,
^
Change-Id: I62b4ec2e6806812e21e7b8c64cb81385d91b1439
diff --git a/av1/encoder/optical_flow.c b/av1/encoder/optical_flow.c
index 3139a29..dc168e7 100644
--- a/av1/encoder/optical_flow.c
+++ b/av1/encoder/optical_flow.c
@@ -67,43 +67,6 @@
return interp;
}
-// bilinear interpolation to find subpixel values
-static AOM_INLINE int get_subpixels(const YV12_BUFFER_CONFIG *frame, int *pred,
- const int w, const int h, LOCALMV mv,
- const double x_coord,
- const double y_coord) {
- double left = x_coord + mv.row;
- double top = y_coord + mv.col;
- const int fromedge = 2;
- const int height = frame->y_crop_height;
- const int width = frame->y_crop_width;
- if (left < 1) left = 1;
- if (top < 1) top = 1;
- // could use elements past boundary where stride > width
- if (top > height - fromedge) top = height - fromedge;
- if (left > width - fromedge) left = width - fromedge;
- const uint8_t *buf = frame->y_buffer;
- const int s = frame->y_stride;
- int prev = -1;
-
- int xint;
- int yint;
- int idx = 0;
- for (int y = prev; y < prev + h; y++) {
- for (int x = prev; x < prev + w; x++) {
- double xx = left + x;
- double yy = top + y;
- xint = (int)xx;
- yint = (int)yy;
- int interp = pixel_interp(
- xx, yy, buf[yint * s + xint], buf[yint * s + (xint + 1)],
- buf[(yint + 1) * s + xint], buf[(yint + 1) * s + (xint + 1)]);
- pred[idx++] = interp;
- }
- }
- return 0;
-}
-
// Scharr filter to compute spatial gradient
static void spatial_gradient(const YV12_BUFFER_CONFIG *frame, const int x_coord,
const int y_coord, const int direction,
