/*
- * Copyright (c) 2012 Justin Ruggles
- *
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
/**
* @file
- * Vorbis audio parser
+ * A public API for Vorbis parsing
*
* Determines the duration for each packet.
*/
-#ifndef AVCODEC_VORBIS_PARSER_H
-#define AVCODEC_VORBIS_PARSER_H
+#ifndef AVCODEC_VORBIS_PARSE_H
+#define AVCODEC_VORBIS_PARSE_H
-#include "avcodec.h"
+#include <stdint.h>
-typedef struct AVVorbisParseContext {
- const AVClass *class;
- int extradata_parsed; ///< we have attempted to parse extradata
- int valid_extradata; ///< extradata is valid, so we can calculate duration
- int blocksize[2]; ///< short and long window sizes
- int previous_blocksize; ///< previous window size
- int mode_blocksize[64]; ///< window size mapping for each mode
- int mode_count; ///< number of modes
- int mode_mask; ///< bitmask used to get the mode in each packet
- int prev_mask; ///< bitmask used to get the previous mode flag in each packet
-} AVVorbisParseContext;
+typedef struct AVVorbisParseContext AVVorbisParseContext;
/**
- * Initialize the Vorbis parser using headers in the extradata.
- *
- * @param avctx codec context
- * @param s Vorbis parser context
+ * Allocate and initialize the Vorbis parser using headers in the extradata.
+ */
+AVVorbisParseContext *av_vorbis_parse_init(const uint8_t *extradata,
+ int extradata_size);
+
+/**
+ * Free the parser and everything associated with it.
*/
-int avpriv_vorbis_parse_extradata(AVCodecContext *avctx, AVVorbisParseContext *s);
+void av_vorbis_parse_free(AVVorbisParseContext **s);
/**
* 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.
- *
* @param s Vorbis parser context
* @param buf buffer containing a Vorbis frame
* @param buf_size size of the buffer
*/
-int avpriv_vorbis_parse_frame(AVVorbisParseContext *s, const uint8_t *buf,
- int buf_size);
+int av_vorbis_parse_frame(AVVorbisParseContext *s, const uint8_t *buf,
+ int buf_size);
-void avpriv_vorbis_parse_reset(AVVorbisParseContext *s);
+void av_vorbis_parse_reset(AVVorbisParseContext *s);
-#endif /* AVCODEC_VORBIS_PARSER_H */
+#endif /* AVCODEC_VORBIS_PARSE_H */