From 803b1b706a8062744f915051d04488387c334bce Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Date: Thu, 17 Apr 2025 12:54:44 +0200
Subject: [PATCH 03/14] avcodec/magicyuvenc: Restrict number of slice-planes to
256
Every frame contains an array of uint8_t with values
0..(s->planes * s->nb_slices - 1), so this needs to fit
into an uint8_t.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
libavcodec/magicyuvenc.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavcodec/magicyuvenc.c b/libavcodec/magicyuvenc.c
index a10da9684f..ba39bbb89f 100644
--- a/libavcodec/magicyuvenc.c
+++ b/libavcodec/magicyuvenc.c
@@ -206,6 +206,7 @@ static av_cold int magy_encode_init(AVCodecContext *avctx)
s->nb_slices = FFMAX(1, s->nb_slices);
s->slice_height = FFALIGN((avctx->height + s->nb_slices - 1) / s->nb_slices, 1 << s->vshift[1]);
s->nb_slices = (avctx->height + s->slice_height - 1) / s->slice_height;
+ s->nb_slices = FFMIN(256U / s->planes, s->nb_slices);
s->slices = av_calloc(s->nb_slices * s->planes, sizeof(*s->slices));
if (!s->slices)
return AVERROR(ENOMEM);
--
2.45.2