libvpx: Add VP9 decoder.

source/libvpx/nestegg/src/nestegg.c

 /*
  * Copyright © 2010 Mozilla Foundation
  *
  * This program is made available under an ISC-style license.  See the
  * accompanying file LICENSE for details.
  */
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ skipping 109 matching lines @@
 #define LACING_XIPH             1
 #define LACING_FIXED            2
 #define LACING_EBML             3
 
 /* Track Types */
 #define TRACK_TYPE_VIDEO        1
 #define TRACK_TYPE_AUDIO        2
 
 /* Track IDs */
 #define TRACK_ID_VP8            "V_VP8"
+#define TRACK_ID_VP9            "V_VP9"
 #define TRACK_ID_VORBIS         "A_VORBIS"
 
 enum vint_mask {
   MASK_NONE,
   MASK_FIRST_BIT
 };
 
 struct ebml_binary {
   unsigned char * data;
   size_t length;
@@ skipping 1522 matching lines @@
   entry = ne_find_track_entry(ctx, track);
   if (!entry)
     return -1;
 
   if (ne_get_string(entry->codec_id, &codec_id) != 0)
     return -1;
 
   if (strcmp(codec_id, TRACK_ID_VP8) == 0)
     return NESTEGG_CODEC_VP8;
 
+  if (strcmp(codec_id, TRACK_ID_VP9) == 0)
+    return NESTEGG_CODEC_VP9;
+
   if (strcmp(codec_id, TRACK_ID_VORBIS) == 0)
     return NESTEGG_CODEC_VORBIS;
 
   return -1;
 }
 
 int
 nestegg_track_codec_data_count(nestegg * ctx, unsigned int track,
                                unsigned int * count)
 {
@@ skipping 247 matching lines @@
       *data = f->data;
       *length = f->length;
       return 0;
     }
     count += 1;
     f = f->next;
   }
 
   return -1;
 }