Add search function for DVB extension descriptor

MythTV · May 3, 2020 · af21356 · af21356
1 parent afaa95a
commit af21356
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Showing 2 changed files with 14 additions and 0 deletions.
diff --git a/mythtv/libs/libmythtv/mpeg/mpegdescriptors.cpp b/mythtv/libs/libmythtv/mpeg/mpegdescriptors.cpp
@@ -86,6 +86,19 @@ const unsigned char *MPEGDescriptor::Find(const desc_list_t &parsed,
     return nullptr;
 }
 
+const unsigned char *MPEGDescriptor::FindExtension(const desc_list_t &parsed,
+                                                    uint desc_tag)
+{
+    for (const auto *item : parsed)
+    {
+        if (item[0] == DescriptorID::extension &&
+            item[1] > 1 &&
+            item[2] == desc_tag)
+            return item;
+    }
+    return nullptr;
+}
+
 desc_list_t MPEGDescriptor::FindAll(const desc_list_t &parsed, uint desc_tag)
 {
     desc_list_t tmp;

diff --git a/mythtv/libs/libmythtv/mpeg/mpegdescriptors.h b/mythtv/libs/libmythtv/mpeg/mpegdescriptors.h
@@ -329,6 +329,7 @@ class MTV_PUBLIC MPEGDescriptor
                                         int excluded_descid);
 
     static const unsigned char *Find(const desc_list_t &parsed, uint desc_tag);
+    static const unsigned char *FindExtension(const desc_list_t &parsed, uint desc_tag);
     static desc_list_t FindAll(const desc_list_t &parsed, uint desc_tag);
 
     static const unsigned char *FindBestMatch(