int ff_mpa_decode_header(uint32_t head, int *sample_rate,
int *channels, int *frame_size, int *bitrate, enum AVCodecID *codec_id);
-#if LIBAVCODEC_VERSION_MAJOR < 58
-int avpriv_mpa_decode_header(AVCodecContext *avctx, uint32_t head, int *sample_rate, int *channels, int *frame_size, int *bitrate);
-int avpriv_mpa_decode_header2(uint32_t head, int *sample_rate, int *channels, int *frame_size, int *bitrate, enum AVCodecID *codec_id);
-#endif
-
/* fast header check for resync */
static inline int ff_mpa_check_header(uint32_t header){
/* header */