lavfi/deshake: use FF_CEIL_RSHIFT()

libavfilter/vf_deshake.c

@@ -62,9 +62,6 @@
 #include "deshake.h"
 #include "deshake_opencl.h"
 
-#define CHROMA_WIDTH(link)  (-((-(link)->w) >> av_pix_fmt_desc_get((link)->format)->log2_chroma_w))
-#define CHROMA_HEIGHT(link) (-((-(link)->h) >> av_pix_fmt_desc_get((link)->format)->log2_chroma_h))
-
 #define OFFSET(x) offsetof(DeshakeContext, x)
 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 
@@ -439,6 +436,9 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
     float alpha = 2.0 / deshake->refcount;
     char tmp[256];
     int ret = 0;
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
+    const int chroma_width  = FF_CEIL_RSHIFT(link->w, desc->log2_chroma_w);
+    const int chroma_height = FF_CEIL_RSHIFT(link->h, desc->log2_chroma_h);
 
     out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
     if (!out) {
@@ -527,9 +527,9 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
     // Generate a luma transformation matrix
     avfilter_get_matrix(t.vec.x, t.vec.y, t.angle, 1.0 + t.zoom / 100.0, matrix_y);
     // Generate a chroma transformation matrix
-    avfilter_get_matrix(t.vec.x / (link->w / CHROMA_WIDTH(link)), t.vec.y / (link->h / CHROMA_HEIGHT(link)), t.angle, 1.0 + t.zoom / 100.0, matrix_uv);
+    avfilter_get_matrix(t.vec.x / (link->w / chroma_width), t.vec.y / (link->h / chroma_height), t.angle, 1.0 + t.zoom / 100.0, matrix_uv);
     // Transform the luma and chroma planes
-    ret = deshake->transform(link->dst, link->w, link->h, CHROMA_WIDTH(link), CHROMA_HEIGHT(link),
+    ret = deshake->transform(link->dst, link->w, link->h, chroma_width, chroma_height,
                              matrix_y, matrix_uv, INTERPOLATE_BILINEAR, deshake->edge, in, out);
 
     // Cleanup the old reference frame