lavu: add AV_CEIL_RSHIFT and use it in various places

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

3 files changed, 6 insertions, 6 deletions

diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index d32da60..467fd0d 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -375,8 +375,8 @@ static int decode_slice(AVCodecContext *c, void *arg)
 
     av_assert1(width && height);
     if (f->colorspace == 0) {
-        const int chroma_width  = -((-width) >> f->chroma_h_shift);
-        const int chroma_height = -((-height) >> f->chroma_v_shift);
+        const int chroma_width  = AV_CEIL_RSHIFT(width,  f->chroma_h_shift);
+        const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
         const int cx            = x >> f->chroma_h_shift;
         const int cy            = y >> f->chroma_v_shift;
         decode_plane(fs, p->data[0] + ps * x + y * p->linesize[0], width,
diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
index 0158605..061e908 100644
--- a/libavcodec/ffv1enc.c
+++ b/libavcodec/ffv1enc.c
@@ -897,8 +897,8 @@ static int encode_slice(AVCodecContext *c, void *arg)
     }
 
     if (f->colorspace == 0) {
-        const int chroma_width  = -((-width) >> f->chroma_h_shift);
-        const int chroma_height = -((-height) >> f->chroma_v_shift);
+        const int chroma_width  = AV_CEIL_RSHIFT(width,  f->chroma_h_shift);
+        const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
         const int cx            = x >> f->chroma_h_shift;
         const int cy            = y >> f->chroma_v_shift;
 
diff --git a/libavcodec/mimic.c b/libavcodec/mimic.c
index b8b3285..6f43723 100644
--- a/libavcodec/mimic.c
+++ b/libavcodec/mimic.c
@@ -392,8 +392,8 @@ static int mimic_decode_frame(AVCodecContext *avctx, void *data,
         avctx->height  = height;
         avctx->pix_fmt = AV_PIX_FMT_YUV420P;
         for (i = 0; i < 3; i++) {
-            ctx->num_vblocks[i] = -((-height) >> (3 + !!i));
-            ctx->num_hblocks[i] =     width   >> (3 + !!i);
+            ctx->num_vblocks[i] = AV_CEIL_RSHIFT(height,   3 + !!i);
+            ctx->num_hblocks[i] =                width >> (3 + !!i);
         }
     } else if (width != ctx->avctx->width || height != ctx->avctx->height) {
         avpriv_request_sample(avctx, "Resolution changing");