gistfile1.diff

diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index 48cf637..8ad74e8 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -457,6 +457,7 @@ static int output_configure(AACContext *ac,
     AVCodecContext *avctx = ac->avctx;
     int i, channels = 0, ret;
     uint64_t layout = 0;
+    int type_counts[TYPE_END] = { 0 };
 
     if (ac->oc[1].layout_map != layout_map) {
         memcpy(ac->oc[1].layout_map, layout_map, tags * sizeof(layout_map[0]));
@@ -470,12 +471,14 @@ static int output_configure(AACContext *ac,
     for (i = 0; i < tags; i++) {
         int type =     layout_map[i][0];
         int id =       layout_map[i][1];
+        int iid =      type_counts[type]++;
         int position = layout_map[i][2];
         // Allocate or free elements depending on if they are in the
         // current program configuration.
-        ret = che_configure(ac, position, type, id, &channels);
+        ret = che_configure(ac, position, type, iid, &channels);
         if (ret < 0)
             return ret;
+        ac->tag_che_map[type][id] = ac->che[type][iid];
     }
     if (ac->oc[1].m4ac.ps == 1 && channels == 2) {
         if (layout == AV_CH_FRONT_CENTER) {
@@ -485,7 +488,6 @@ static int output_configure(AACContext *ac,
         }
     }
 
-    memcpy(ac->tag_che_map, ac->che, 4 * MAX_ELEM_ID * sizeof(ac->che[0][0]));
     if (layout) avctx->channel_layout = layout;
                             ac->oc[1].channel_layout = layout;
     avctx->channels       = ac->oc[1].channels       = channels;