copy: fix the cache copy size

This fixes a regression from 09d421a208

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

modules/video_chroma/copy.c

@@ -468,7 +468,7 @@ static void SSE_CopyPlane(uint8_t *dst, size_t dst_pitch,
     const size_t copy_pitch = __MIN(src_pitch, dst_pitch);
     const unsigned w16 = (copy_pitch+15) & ~15;
     const unsigned hstep = cache_size / w16;
-    const unsigned cache_width = __MIN(src_pitch, hstep);
+    const unsigned cache_width = __MIN(src_pitch, cache_size);
     assert(hstep > 0);
 
     /* If SSE4.1: CopyFromUswc is faster than memcpy */
@@ -501,8 +501,8 @@ SSE_InterleavePlanes(uint8_t *dst, size_t dst_pitch,
     size_t copy_pitch = __MIN(dst_pitch / 2, srcu_pitch);
     unsigned int const  w16 = (srcu_pitch+15) & ~15;
     unsigned int const  hstep = (cache_size) / (2*w16);
-    const unsigned cacheu_width = __MIN(srcu_pitch, hstep);
-    const unsigned cachev_width = __MIN(srcv_pitch, hstep);
+    const unsigned cacheu_width = __MIN(srcu_pitch, cache_size);
+    const unsigned cachev_width = __MIN(srcv_pitch, cache_size);
     assert(hstep > 0);
 
     for (unsigned int y = 0; y < height; y += hstep)
@@ -535,7 +535,7 @@ static void SSE_SplitPlanes(uint8_t *dstu, size_t dstu_pitch,
     size_t copy_pitch = __MIN(__MIN(src_pitch / 2, dstu_pitch), dstv_pitch);
     const unsigned w16 = (src_pitch+15) & ~15;
     const unsigned hstep = cache_size / w16;
-    const unsigned cache_width = __MIN(src_pitch, hstep);
+    const unsigned cache_width = __MIN(src_pitch, cache_size);
     assert(hstep > 0);
 
     for (unsigned y = 0; y < height; y += hstep) {