extern const AVCodecTag ff_codec_bmp_tags[]; // exposed through avformat_get_riff_video_tags()
extern const AVCodecTag ff_codec_wav_tags[];
+extern const AVCodecTag ff_codec_bmp_tags_unofficial[];
+
void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale);
int ff_read_riff_info(AVFormatContext *s, int64_t size);