lavc: use avpriv_ prefix for ff_split_xiph_headers.

It's used in lavf.

libavcodec/vorbisdec.c

@@ -987,7 +987,7 @@ static av_cold int vorbis_decode_init(AVCodecContext *avccontext)
         return -1;
     }
 
-    if (ff_split_xiph_headers(headers, headers_len, 30, header_start, header_len) < 0) {
+    if (avpriv_split_xiph_headers(headers, headers_len, 30, header_start, header_len) < 0) {
         av_log(avccontext, AV_LOG_ERROR, "Extradata corrupt.\n");
         return -1;
     }

libavcodec/vp3.c

@@ -2275,7 +2275,7 @@ static av_cold int theora_decode_init(AVCodecContext *avctx)
         return -1;
     }
 
-    if (ff_split_xiph_headers(avctx->extradata, avctx->extradata_size,
+    if (avpriv_split_xiph_headers(avctx->extradata, avctx->extradata_size,
                               42, header_start, header_len) < 0) {
         av_log(avctx, AV_LOG_ERROR, "Corrupt extradata\n");
         return -1;

libavcodec/xiph.c

@@ -21,7 +21,7 @@
 #include "libavutil/intreadwrite.h"
 #include "xiph.h"
 
-int ff_split_xiph_headers(uint8_t *extradata, int extradata_size,
+int avpriv_split_xiph_headers(uint8_t *extradata, int extradata_size,
                           int first_header_size, uint8_t *header_start[3],
                           int header_len[3])
 {

libavcodec/xiph.h

@@ -36,7 +36,7 @@
  * @param[out] header_len The sizes of each of the three headers.
  * @return On error a negative value is returned, on success zero.
  */
-int ff_split_xiph_headers(uint8_t *extradata, int extradata_size,
+int avpriv_split_xiph_headers(uint8_t *extradata, int extradata_size,
                               int first_header_size, uint8_t *header_start[3],
                               int header_len[3]);
 

libavformat/matroskaenc.c

@@ -423,7 +423,7 @@ static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecContex
     else
         first_header_size = 42;
 
-    if (ff_split_xiph_headers(codec->extradata, codec->extradata_size,
+    if (avpriv_split_xiph_headers(codec->extradata, codec->extradata_size,
                               first_header_size, header_start, header_len) < 0) {
         av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
         return -1;

libavformat/oggenc.c

@@ -377,7 +377,7 @@ static int ogg_write_header(AVFormatContext *s)
             int header_type = st->codec->codec_id == CODEC_ID_VORBIS ? 3 : 0x81;
             int framing_bit = st->codec->codec_id == CODEC_ID_VORBIS ? 1 : 0;
 
-            if (ff_split_xiph_headers(st->codec->extradata, st->codec->extradata_size,
+            if (avpriv_split_xiph_headers(st->codec->extradata, st->codec->extradata_size,
                                       st->codec->codec_id == CODEC_ID_VORBIS ? 30 : 42,
                                       oggstream->header, oggstream->header_len) < 0) {
                 av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");

libavformat/sdp.c

@@ -252,7 +252,7 @@ static char *xiph_extradata2config(AVCodecContext *c)
         return NULL;
     }
 
-    if (ff_split_xiph_headers(c->extradata, c->extradata_size,
+    if (avpriv_split_xiph_headers(c->extradata, c->extradata_size,
                               first_header_size, header_start,
                               header_len) < 0) {
         av_log(c, AV_LOG_ERROR, "Extradata corrupt.\n");