1 files changed, 22 insertions, 4 deletions
diff --git a/libavcodec/vorbis_parser.h b/libavcodec/vorbis_parser.h
index 480a918f7b..590101bbad 100644
--- a/libavcodec/vorbis_parser.h
+++ b/libavcodec/vorbis_parser.h
@@ -1,20 +1,20 @@
 /*
  * Copyright (c) 2012 Justin Ruggles
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -50,6 +50,24 @@ typedef struct VorbisParseContext {
  */
 int avpriv_vorbis_parse_extradata(AVCodecContext *avctx, VorbisParseContext *s);
 
+#define VORBIS_FLAG_HEADER  0x00000001
+#define VORBIS_FLAG_COMMENT 0x00000002
+
+/**
+ * Get the duration for a Vorbis packet.
+ *
+ * avpriv_vorbis_parse_extradata() must have been successfully called prior to
+ * this in order for a correct duration to be returned. If @p flags is @c NULL,
+ * special frames are considered invalid.
+ *
+ * @param s        Vorbis parser context
+ * @param buf      buffer containing a Vorbis frame
+ * @param buf_size size of the buffer
+ * @param flags    flags for special frames
+ */
+int avpriv_vorbis_parse_frame_flags(VorbisParseContext *s, const uint8_t *buf,
+                                    int buf_size, int *flags);
+
 /**
  * Get the duration for a Vorbis packet.
  *