* For no string, set to an empty string.
* @return The length in bytes.
*/
-int64_t ff_vorbiscomment_length(AVDictionary *m, const char *vendor_string,
+int64_t ff_vorbiscomment_length(const AVDictionary *m, const char *vendor_string,
AVChapter **chapters, unsigned int nb_chapters);
/**
- * Write a VorbisComment into a buffer. The buffer, p, must have enough
- * data to hold the whole VorbisComment. The minimum size required can be
- * obtained by passing the same AVDictionary and vendor_string to
+ * Write a VorbisComment into an AVIOContext. The output size can be obtained
+ * in advance by passing the same chapters, AVDictionary and vendor_string to
* ff_vorbiscomment_length()
*
- * @param p The buffer in which to write.
+ * @param pb The AVIOContext to write the output.
* @param m The metadata struct to write.
* @param vendor_string The vendor string to write.
* @param chapters The chapters to write.
* @param nb_chapters The number of chapters to write.
*/
-int ff_vorbiscomment_write(uint8_t **p, AVDictionary **m,
+int ff_vorbiscomment_write(AVIOContext *pb, const AVDictionary *m,
const char *vendor_string,
AVChapter **chapters, unsigned int nb_chapters);