MP4BoxWriter Class Reference

Minimal ISO-BMFF box builder: appends bytes to an in-memory buffer, with beginBox()/endBox() taking care of the 4-byte size prefix (backpatched once the box's content is known) - used internally by MuxerMP4 to assemble 'moov' once and each 'moof' per fragment. More...

#include <ContainerMP4.h>

Collaboration diagram for MP4BoxWriter:

Public Member Functions
size_t	beginBox (const char *type)
void	bytes (const uint8_t *data, size_t len)
void	clear ()
void	cstr (const char *s)
const uint8_t *	data ()
void	endBox (size_t pos)
void	fourcc (const char *type)
size_t	size ()
void	u16 (uint16_t v)
void	u24 (uint32_t v)
void	u32 (uint32_t v)
void	u8 (uint8_t v)
void	zeros (size_t len)

Public Attributes
Vector< uint8_t >	buffer

Detailed Description

Minimal ISO-BMFF box builder: appends bytes to an in-memory buffer, with beginBox()/endBox() taking care of the 4-byte size prefix (backpatched once the box's content is known) - used internally by MuxerMP4 to assemble 'moov' once and each 'moof' per fragment.

Member Function Documentation

beginBox()

size_t beginBox ( const char *  type )

inline

Writes the 4-byte size placeholder + fourcc, returns the box's start position (pass to endBox() once its content has been written).

bytes()

void bytes ( const uint8_t *  data, size_t  len  )

inline

clear()

void clear ( )

inline

cstr()

void cstr ( const char *  s )

inline

data()

const uint8_t * data ( )

inline

endBox()

void endBox ( size_t  pos )

inline

Backpatches the size placeholder from beginBox() with the box's actual total size (header + content), now that it's known.

fourcc()

void fourcc ( const char *  type )

inline

size()

size_t size ( )

inline

u16()

void u16 ( uint16_t  v )

inline

u24()

void u24 ( uint32_t  v )

inline

u32()

void u32 ( uint32_t  v )

inline

u8()

void u8 ( uint8_t  v )

inline

zeros()

void zeros ( size_t  len )

inline

Member Data Documentation

buffer

Vector<uint8_t> buffer

---

The documentation for this class was generated from the following file:

• src/AudioTools/AudioCodecs/ContainerMP4.h