X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Findeo4.c;h=6a19955bce8e51445b25d9c0727c69d5f6b235d4;hb=999d31d354f1f0616a09691913659ac0abdcc899;hp=3c749a9b8b6deda181167d28cf90f8c852cda6fc;hpb=0cb83c563848bf8f8365e7bd30e7e6b57ef360f0;p=ffmpeg

diff --git a/libavcodec/indeo4.c b/libavcodec/indeo4.c
index 3c749a9b8b6..6a19955bce8 100644
--- a/libavcodec/indeo4.c
+++ b/libavcodec/indeo4.c
@@ -370,13 +370,15 @@ static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
             band->scan = scan_index_to_tab[scan_indx];
 
             band->quant_mat = get_bits(&ctx->gb, 5);
-            if (band->quant_mat == 31) {
-                av_log(avctx, AV_LOG_ERROR, "Custom quant matrix encountered!\n");
-                return AVERROR_INVALIDDATA;
-            }
             if (band->quant_mat >= FF_ARRAY_ELEMS(quant_index_to_tab)) {
-                avpriv_request_sample(avctx, "Quantization matrix %d",
-                                      band->quant_mat);
+
+                if (band->quant_mat == 31)
+                    av_log(avctx, AV_LOG_ERROR,
+                           "Custom quant matrix encountered!\n");
+                else
+                    avpriv_request_sample(avctx, "Quantization matrix %d",
+                                          band->quant_mat);
+                band->quant_mat = -1;
                 return AVERROR_INVALIDDATA;
             }
         } else {
@@ -386,6 +388,10 @@ static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
                        "inherited\n");
                 return AVERROR_INVALIDDATA;
             }
+            if (band->quant_mat < 0) {
+                av_log(avctx, AV_LOG_ERROR, "Invalid quant_mat inherited\n");
+                return AVERROR_INVALIDDATA;
+            }
         }
 
         /* decode block huffman codebook */