From 5e80fb7ff226f136dbcf3fed00a2966bf8e9bd70 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 29 Oct 2014 15:04:23 +0100
Subject: lavc: add a public API for parsing vorbis packets.

It is required by (at least) the ogg demuxer.

Mark the current semi-public apriv API for removal.
---
 libavcodec/vorbis_parser.c | 54 ++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 47 insertions(+), 7 deletions(-)

(limited to 'libavcodec/vorbis_parser.c')

diff --git a/libavcodec/vorbis_parser.c b/libavcodec/vorbis_parser.c
index b08846518a..eec37322a8 100644
--- a/libavcodec/vorbis_parser.c
+++ b/libavcodec/vorbis_parser.c
@@ -30,7 +30,7 @@
 #include "get_bits.h"
 #include "parser.h"
 #include "xiph.h"
-#include "vorbis_parser.h"
+#include "vorbis_parser_internal.h"
 
 static const AVClass vorbis_parser_class = {
     .class_name = "Vorbis parser",
@@ -181,7 +181,8 @@ bad_header:
     return ret;
 }
 
-int avpriv_vorbis_parse_extradata(AVCodecContext *avctx, AVVorbisParseContext *s)
+static int vorbis_parse_init(AVVorbisParseContext *s,
+                             const uint8_t *extradata, int extradata_size)
 {
     uint8_t *header_start[3];
     int header_len[3];
@@ -190,8 +191,8 @@ int avpriv_vorbis_parse_extradata(AVCodecContext *avctx, AVVorbisParseContext *s
     s->class = &vorbis_parser_class;
     s->extradata_parsed = 1;
 
-    if ((ret = avpriv_split_xiph_headers(avctx->extradata,
-                                         avctx->extradata_size, 30,
+    if ((ret = avpriv_split_xiph_headers(extradata,
+                                         extradata_size, 30,
                                          header_start, header_len)) < 0) {
         av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
         return ret;
@@ -209,8 +210,8 @@ int avpriv_vorbis_parse_extradata(AVCodecContext *avctx, AVVorbisParseContext *s
     return 0;
 }
 
-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)
 {
     int duration = 0;
 
@@ -242,12 +243,51 @@ int avpriv_vorbis_parse_frame(AVVorbisParseContext *s, const uint8_t *buf,
     return duration;
 }
 
-void avpriv_vorbis_parse_reset(AVVorbisParseContext *s)
+void av_vorbis_parse_reset(AVVorbisParseContext *s)
 {
     if (s->valid_extradata)
         s->previous_blocksize = s->mode_blocksize[0];
 }
 
+void av_vorbis_parse_free(AVVorbisParseContext **s)
+{
+    av_freep(s);
+}
+
+AVVorbisParseContext *av_vorbis_parse_init(const uint8_t *extradata,
+                                           int extradata_size)
+{
+    AVVorbisParseContext *s = av_mallocz(sizeof(*s));
+    int ret;
+
+    if (!s)
+        return NULL;
+
+    ret = vorbis_parse_init(s, extradata, extradata_size);
+    if (ret < 0) {
+        av_vorbis_parse_free(&s);
+        return NULL;
+    }
+
+    return s;
+}
+
+#if LIBAVCODEC_VERSION_MAJOR < 57
+int avpriv_vorbis_parse_extradata(AVCodecContext *avctx, AVVorbisParseContext *s)
+{
+    return vorbis_parse_init(s, avctx->extradata, avctx->extradata_size);
+}
+void avpriv_vorbis_parse_reset(AVVorbisParseContext *s)
+{
+    av_vorbis_parse_reset(s);
+}
+int avpriv_vorbis_parse_frame(AVVorbisParseContext *s, const uint8_t *buf,
+                              int buf_size)
+{
+    return av_vorbis_parse_frame(s, buf, buf_size);
+}
+#endif
+
 #if CONFIG_VORBIS_PARSER
 static int vorbis_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
                         const uint8_t **poutbuf, int *poutbuf_size,
-- 
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