public static extern void av_bprint_channel_layout(libavutil.AVBPrint *bp, int nb_channels, ulong channel_layout);
public static extern void av_bprint_init_for_buffer(libavutil.AVBPrint *buf, System.Text.StringBuilder buffer, uint size);
public static extern void av_bprintf(libavutil.AVBPrint *buf, string fmt);
public static extern void av_bprint_escape(libavutil.AVBPrint *dstbuf, string src, string special_chars, libavutil.AVEscapeMode mode, int flags);
public static extern void av_bprint_init(libavutil.AVBPrint *buf, uint size_init, uint size_max);
public static extern int av_bprint_finalize(libavutil.AVBPrint *buf, sbyte **ret_str);
public static extern int av_bprint_finalize(libavutil.AVBPrint *buf, ref System.Text.StringBuilder ret_str);
public static extern int av_bprint_is_complete(libavutil.AVBPrint *buf);
public static extern void av_bprint_clear(libavutil.AVBPrint *buf);
public static extern void av_bprint_get_buffer(libavutil.AVBPrint *buf, uint size, ref byte *mem, uint *actual_size);
public static extern void av_bprint_append_data(libavutil.AVBPrint *buf, string data, uint size);
public static extern void av_bprint_chars(libavutil.AVBPrint *buf, sbyte c, uint n);
