X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Flagarith.c;h=69899e423e3baf9d32afb81b7bccf328b44a4239;hb=a247ac640df3da573cd661065bf53f37863e2b46;hp=59169be5dea5231324fd8149f333ae02d6df1059;hpb=c6892f59eb0e9f2a9ec1f55b21a5841a60540e1f;p=ffmpeg

diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c
index 59169be5dea..69899e423e3 100644
--- a/libavcodec/lagarith.c
+++ b/libavcodec/lagarith.c
@@ -226,6 +226,9 @@ static int lag_read_prob_header(lag_rac *rac, GetBitContext *gb)
         }
     }
 
+    if (scale_factor > 23)
+        return AVERROR_INVALIDDATA;
+
     rac->scale = scale_factor;
 
     /* Fill probability array with cumulative probability for each symbol. */
@@ -709,24 +712,13 @@ static av_cold int lag_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-#if HAVE_THREADS
-static av_cold int lag_decode_init_thread_copy(AVCodecContext *avctx)
-{
-    LagarithContext *l = avctx->priv_data;
-    l->avctx = avctx;
-
-    return 0;
-}
-#endif
-
-AVCodec ff_lagarith_decoder = {
+const AVCodec ff_lagarith_decoder = {
     .name           = "lagarith",
     .long_name      = NULL_IF_CONFIG_SMALL("Lagarith lossless"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_LAGARITH,
     .priv_data_size = sizeof(LagarithContext),
     .init           = lag_decode_init,
-    .init_thread_copy = ONLY_IF_THREADS_ENABLED(lag_decode_init_thread_copy),
     .decode         = lag_decode_frame,
     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
 };