#define AVIF_HASINDEX 0x00000010 // Index at end of file?#define AVIF_MUSTUSEINDEX 0x00000020#define AVIF_ISINTERLEAVED 0x00000100#define AVIF_TRUSTCKTYPE 0x00000800 // Use CKType to find key frames?#define AVIF_WASCAPTUREFILE 0x00010000#define AVIF_COPYRIGHTED 0x00020000offset_tstart_tag(ByteIOContext*pb,char*tag);voidend_tag(ByteIOContext*pb,offset_tstart);voidput_bmp_header(ByteIOContext*pb,AVCodecContext*enc);