[FFmpeg-devel] [PATCH] lavfi/zscale: fix tmp buffer ptr alignment for zimg_filter_graph_process (v2)

[Pavel Koshevoy]

---
 libavfilter/vf_zscale.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/libavfilter/vf_zscale.c b/libavfilter/vf_zscale.c
index 4ba059064b..07e295652d 100644
--- a/libavfilter/vf_zscale.c
+++ b/libavfilter/vf_zscale.c
@@ -630,7 +630,7 @@ static int graphs_build(AVFrame *in, AVFrame *out, const AVPixFmtDescriptor *des
 
     if (s->tmp[job_nr])
         av_freep(&s->tmp[job_nr]);
-    s->tmp[job_nr] = av_calloc(size, 1);
+    s->tmp[job_nr] = av_calloc(size + ZIMG_ALIGNMENT - 1, 1);
     if (!s->tmp[job_nr])
         return AVERROR(ENOMEM);
 
@@ -750,7 +750,9 @@ static int filter_slice(AVFilterContext *ctx, void *data, int job_nr, int n_jobs
     }
     if (!s->graph[job_nr])
         return AVERROR(EINVAL);
-    ret = zimg_filter_graph_process(s->graph[job_nr], &src_buf, &dst_buf, s->tmp[job_nr], 0, 0, 0, 0);
+    ret = zimg_filter_graph_process(s->graph[job_nr], &src_buf, &dst_buf,
+                                    (uint8_t *)FFALIGN((uintptr_t)s->tmp[job_nr], ZIMG_ALIGNMENT),
+                                    0, 0, 0, 0);
     if (ret)
         return print_zimg_error(ctx);
 
@@ -765,7 +767,9 @@ static int filter_slice(AVFilterContext *ctx, void *data, int job_nr, int n_jobs
 
         if (!s->alpha_graph[job_nr])
             return AVERROR(EINVAL);
-        ret = zimg_filter_graph_process(s->alpha_graph[job_nr], &src_buf, &dst_buf, s->tmp[job_nr], 0, 0, 0, 0);
+        ret = zimg_filter_graph_process(s->alpha_graph[job_nr], &src_buf, &dst_buf,
+                                        (uint8_t *)FFALIGN((uintptr_t)s->tmp[job_nr], ZIMG_ALIGNMENT),
+                                        0, 0, 0, 0);
         if (ret)
             return print_zimg_error(ctx);
     }
-- 
2.43.0