[FFmpeg-devel] [PATCH 2/7] libpostproc: check minimum size

From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 2/7] libpostproc: check minimum size
Date: Fri,  2 May 2025 00:27:30 +0200
Message-ID: <20250501222735.2457868-2-michael@niedermayer.cc> (raw)
In-Reply-To: <20250501222735.2457868-1-michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libpostproc/postprocess.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libpostproc/postprocess.c b/libpostproc/postprocess.c
index 0223bab5484..eab22289192 100644
--- a/libpostproc/postprocess.c
+++ b/libpostproc/postprocess.c
@@ -896,6 +896,11 @@ void  pp_postprocess(const uint8_t * src[3], const int srcStride[3],
     int minStride= FFMAX(FFABS(srcStride[0]), FFABS(dstStride[0]));
     int absQPStride = FFABS(QPStride);
 
+    if (width < 16 || height < 16) {
+        av_log(c, AV_LOG_ERROR, "Postproc is designed to filter 16x16 macroblock based formats, the minimum size is 1 macroblock\n");
+        return;
+    }
+
     // c->stride and c->QPStride are always positive
     if(c->stride < minStride || c->qpStride < absQPStride)
         reallocBuffers(c, width, height,
-- 
2.49.0

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