X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Faacdec_template.c;h=b60b31a92c33e3bec03ea216ba71bb182e9322fa;hb=5c1aafff2d844b177b0b20db4a38d8460992558b;hp=cf971810926ed7fe9dfb4d5aecce0ad50dfe4745;hpb=99cc3cf7a26cd4113e5047034577027d8c6f07a2;p=ffmpeg

diff --git a/libavcodec/aacdec_template.c b/libavcodec/aacdec_template.c
index cf971810926..b60b31a92c3 100644
--- a/libavcodec/aacdec_template.c
+++ b/libavcodec/aacdec_template.c
@@ -3122,6 +3122,7 @@ static int aac_decode_frame_int(AVCodecContext *avctx, void *data,
     int samples = 0, multiplier, audio_found = 0, pce_found = 0;
     int is_dmono, sce_count = 0;
     int payload_alignment;
+    uint8_t che_presence[4][MAX_ELEM_ID] = {{0}};
 
     ac->frame = data;
 
@@ -3159,6 +3160,14 @@ static int aac_decode_frame_int(AVCodecContext *avctx, void *data,
         }
 
         if (elem_type < TYPE_DSE) {
+            if (che_presence[elem_type][elem_id]) {
+                av_log(ac->avctx, AV_LOG_ERROR, "channel element %d.%d duplicate\n",
+                       elem_type, elem_id);
+                err = AVERROR_INVALIDDATA;
+                goto fail;
+            }
+            che_presence[elem_type][elem_id] = 1;
+
             if (!(che=get_che(ac, elem_type, elem_id))) {
                 av_log(ac->avctx, AV_LOG_ERROR, "channel element %d.%d is not allocated\n",
                        elem_type, elem_id);
@@ -3324,20 +3333,14 @@ static int aac_decode_frame(AVCodecContext *avctx, void *data,
                                        AV_PKT_DATA_JP_DUALMONO,
                                        &jp_dualmono_size);
 
-    if (new_extradata && 0) {
-        av_free(avctx->extradata);
-        avctx->extradata = av_mallocz(new_extradata_size +
-                                      AV_INPUT_BUFFER_PADDING_SIZE);
-        if (!avctx->extradata)
-            return AVERROR(ENOMEM);
-        avctx->extradata_size = new_extradata_size;
-        memcpy(avctx->extradata, new_extradata, new_extradata_size);
-        push_output_configuration(ac);
-        if (decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
-                                         avctx->extradata,
-                                         avctx->extradata_size*8LL, 1) < 0) {
-            pop_output_configuration(ac);
-            return AVERROR_INVALIDDATA;
+    if (new_extradata) {
+        /* discard previous configuration */
+        ac->oc[1].status = OC_NONE;
+        err = decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
+                                           new_extradata,
+                                           new_extradata_size * 8LL, 1);
+        if (err < 0) {
+            return err;
         }
     }