avcodec/ac3_parser: add avpriv_ac3_parse_header2() and use it in libavcodec

The new function has the ability to allocate the structure, allowing it to grow
without needing major bumps

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-03-01 01:47:33 +01:00
parent df6d21c1e7
commit eadc21cfe7
3 changed files with 25 additions and 6 deletions

View file

@ -31,11 +31,14 @@
* 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.
* @param[out] hdr Pointer to Pointer to struct where header info is written.
* will be allocated if NULL
* @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.
*/
int avpriv_ac3_parse_header2(GetBitContext *gbc, AC3HeaderInfo **hdr);
int avpriv_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo *hdr);
#endif /* AVCODEC_AC3_PARSER_H */