4xm: replace forcing EMU_EDGE by a copy

[ffmpeg] / libavcodec / jpeg2000dec.c

diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c
index 48fd98dbc5bd98f76bd797bd4d682fb9abff363f..cc154c3522dc1f335f163880448dcfe0ca58da15 100644 (file)
--- a/libavcodec/jpeg2000dec.c
+++ b/libavcodec/jpeg2000dec.c
@@ -715,6 +715,13 @@ static int jpeg2000_decode_packet(Jpeg2000DecoderContext *s,
             }
             cblk->length   += cblk->lengthinc;
             cblk->lengthinc = 0;
+
+            if (cblk->length > sizeof(cblk->data)) {
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "Block length %d > data size %zd\n",
+                       cblk->length, sizeof(cblk->data));
+                return AVERROR_INVALIDDATA;
+            }
         }
     }
     return 0;
@@ -1284,6 +1291,10 @@ static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s)
                 av_log(s->avctx, AV_LOG_ERROR, "Missing SOT\n");
                 return AVERROR_INVALIDDATA;
             }
+            if (!s->tile) {
+                av_log(s->avctx, AV_LOG_ERROR, "Missing SIZ\n");
+                return AVERROR_INVALIDDATA;
+            }
 
             tile = s->tile + s->curtileno;
             tp = tile->tile_part + tile->tp_idx;
@@ -1459,6 +1470,7 @@ end:
 static void jpeg2000_init_static_data(AVCodec *codec)
 {
     ff_jpeg2000_init_tier1_luts();
+    ff_mqc_init_context_tables();
 }
 
 #define OFFSET(x) offsetof(Jpeg2000DecoderContext, x)