demux_mkv: check if the video codec is an image

Add a simple helper to codec_tags to check if the codec name matches one
of the images. If so, then we set still_image and image in the stream as
true (slightly different semanatics).

1 files changed, 11 insertions, 0 deletions

diff --git a/demux/codec_tags.c b/demux/codec_tags.c
index accc1d918d..0e7b13ce6d 100644
--- a/demux/codec_tags.c
+++ b/demux/codec_tags.c
@@ -233,6 +233,17 @@ static const char *const type_to_codec[][2] = {
     {0}
 };
 
+bool mp_codec_is_image(const char *codec)
+{
+    if (codec) {
+        for (int n = 0; type_to_codec[n][0]; n++) {
+            if (strcasecmp(type_to_codec[n][1], codec) == 0)
+                return true;
+        }
+    }
+    return false;
+}
+
 const char *mp_map_type_to_image_codec(const char *type)
 {
     if (type) {