ac3_parser: add a public function for parsing the data required by the demuxer

Make the current semi-public avpriv_ac3_parse_header() private to lavc.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

1 files changed, 6 insertions, 11 deletions

diff --git a/libavcodec/ac3_parser.h b/libavcodec/ac3_parser.h
index 9322550ea5..f78c461041 100644
--- a/libavcodec/ac3_parser.h
+++ b/libavcodec/ac3_parser.h
@@ -23,19 +23,14 @@
 #ifndef AVCODEC_AC3_PARSER_H
 #define AVCODEC_AC3_PARSER_H
 
-#include "ac3.h"
-#include "get_bits.h"
+#include <stddef.h>
+#include <stdint.h>
 
 /**
- * Parse AC-3 frame header.
- * Parse the header up to the lfeon element, which is the first 52 or 54 bits
- * depending on the audio coding mode.
- * @param[in]  gbc BitContext containing the first 54 bits of the frame.
- * @param[out] hdr Pointer to struct where header info is written.
- * @return Returns 0 on success, -1 if there is a sync word mismatch,
- * -2 if the bsid (version) element is invalid, -3 if the fscod (sample rate)
- * element is invalid, or -4 if the frmsizecod (bit rate) element is invalid.
+ * Extract the bitstream ID and the frame size from AC-3 data.
  */
-int avpriv_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo *hdr);
+int av_ac3_parse_header(const uint8_t *buf, size_t size,
+                        uint8_t *bitstream_id, uint16_t *frame_size);
+
 
 #endif /* AVCODEC_AC3_PARSER_H */