The Media Muxer APIs provides functions for muxing media data.

Required Header

#include <mediamuxer.h>

Overview

MEDIAMUXER API set allows : The API set allows one to directly access media muxer on device. Application can create, add relevant media track(s) and write corresponding samples to get muxed media files. mediamuxer takes encoded media as input and gives muxed media in a compatible container format.

Typical Call Flow of mediamuxer APIs is:

mediamuxer_create()
mediamuxer_set_data_sink()
mediamuxer_add_track(1)
mediamuxer_add_track(2) [add more tracks, if needed]
mediamuxer_prepare()
mediamuxer_start()
while()
if (is_track(1)_data_available)
    mediamuxer_write_sample(track(1))
else
    mediamuxer_close_track(1)
if (is_track(2)_data_available)
    mediamuxer_write_sample(track(2))
else
    mediamuxer_close_track(2)
mediamuxer_stop()
mediamuxer_unprepare()
mediamuxer_destroy()

Functions
int	mediamuxer_create (mediamuxer_h *muxer)
	Creates a media muxer handle for muxing.
int	mediamuxer_set_data_sink (mediamuxer_h muxer, char *path, mediamuxer_output_format_e format)
	Sets the sink path of output stream.
int	mediamuxer_add_track (mediamuxer_h muxer, media_format_h media_format, int *track_index)
	Adds the media track of interest to the muxer handle.
int	mediamuxer_prepare (mediamuxer_h muxer)
	Prepares the media muxer.
int	mediamuxer_start (mediamuxer_h muxer)
	Starts the media muxer.
int	mediamuxer_write_sample (mediamuxer_h muxer, int track_index, media_packet_h inbuf)
	Writes the media packet of interest to the muxer handle.
int	mediamuxer_close_track (mediamuxer_h muxer, int track_index)
	Closes the track from further writing of data.
int	mediamuxer_pause (mediamuxer_h muxer)
	Pauses the media muxer.
int	mediamuxer_resume (mediamuxer_h muxer)
	Resumes the media muxer.
int	mediamuxer_stop (mediamuxer_h muxer)
	Stops the media muxer.
int	mediamuxer_unprepare (mediamuxer_h muxer)
	Unprepares the media muxer.
int	mediamuxer_destroy (mediamuxer_h muxer)
	Removes the instance of media muxer and clear all its context memory.
int	mediamuxer_get_state (mediamuxer_h muxer, mediamuxer_state_e *state)
	Gets media muxer state.
int	mediamuxer_set_error_cb (mediamuxer_h muxer, mediamuxer_error_cb callback, void *user_data)
	Sets a error callback function to be invoked when an error occurs.
int	mediamuxer_unset_error_cb (mediamuxer_h muxer)
	Unsets the error callback function.
int	mediamuxer_set_eos_cb (mediamuxer_h muxer, mediamuxer_eos_cb callback, void *user_data)
	Sets an EOS (end of stream) callback function to be invoked when an EOS occurs.
int	mediamuxer_unset_eos_cb (mediamuxer_h muxer)
	Unsets the EOS (end of stream) callback function.
Typedefs
typedef struct mediamuxer_s *	mediamuxer_h
	Media Muxer handle type.
typedef void(*	mediamuxer_error_cb )(mediamuxer_error_e error, void *user_data)
	Called when error occurs in media muxer.
typedef void(*	mediamuxer_eos_cb )(void *user_data)
	Called when end of stream occurs in media muxer.

Typedef Documentation

typedef void(* mediamuxer_eos_cb)(void *user_data)

Called when end of stream occurs in media muxer.

Since :: 4.0

Parameters:

[in] user_data The user data passed from the code where mediamuxer_set_eos_cb() was invoked;
this data will be accessible from mediamuxer_eos_cb()

Precondition:: Create media muxer handle by calling mediamuxer_create() function.

See also:: mediamuxer_set_eos_cb(); mediamuxer_unset_eos_cb()

typedef void(* mediamuxer_error_cb)(mediamuxer_error_e error, void *user_data)

Called when error occurs in media muxer.

Following error codes can be delivered. MEDIAMUXER_ERROR_INVALID_OPERATION, MEDIAMUXER_ERROR_NOT_SUPPORTED, MEDIAMUXER_ERROR_INVALID_PATH, MEDIAMUXER_ERROR_RESOURCE_LIMIT

Since :: 3.0

Parameters:

[in]	error	The error that occurred in media muxer
[in]	user_data	The user data passed from the code where mediamuxer_set_error_cb() was invoked This data will be accessible from user_data mediamuxer_error_cb()

Precondition:: Create media muxer handle by calling mediamuxer_create() function.

See also:: mediamuxer_set_error_cb(); mediamuxer_unset_error_cb()

typedef struct mediamuxer_s* mediamuxer_h

Media Muxer handle type.

Since :: 3.0

Enumeration Type Documentation

enum mediamuxer_error_e

Enumeration for media muxer error.

Since :: 3.0

Enumerator:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_OUT_OF_MEMORY	Out of memory
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_NOT_SUPPORTED	Not supported
MEDIAMUXER_ERROR_PERMISSION_DENIED	Permission denied
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state
MEDIAMUXER_ERROR_INVALID_PATH	Invalid path
MEDIAMUXER_ERROR_RESOURCE_LIMIT	Resource limit

enum mediamuxer_output_format_e

Enumeration for media muxer output format.

Since :: 3.0

Enumerator:

MEDIAMUXER_CONTAINER_FORMAT_MP4	The mediamuxer output format is MP4 container
MEDIAMUXER_CONTAINER_FORMAT_3GP	The mediamuxer output format is 3GP container
MEDIAMUXER_CONTAINER_FORMAT_WAV	The mediamuxer output format is WAV container
MEDIAMUXER_CONTAINER_FORMAT_AMR_NB	The mediamuxer output format is ARM_NB container
MEDIAMUXER_CONTAINER_FORMAT_AMR_WB	The mediamuxer output format is AMR_WB container
MEDIAMUXER_CONTAINER_FORMAT_AAC_ADTS	The mediamuxer output format is AAC_ADTS container

enum mediamuxer_state_e

Enumeration for media muxer state.

Since :: 3.0

Enumerator:

MEDIAMUXER_STATE_NONE	The mediamuxer is not created
MEDIAMUXER_STATE_IDLE	The mediamuxer is created, but not prepared
MEDIAMUXER_STATE_READY	The mediamuxer is ready to mux media
MEDIAMUXER_STATE_MUXING	The mediamuxer is muxing media
MEDIAMUXER_STATE_PAUSED	The mediamuxer is paused while muxing media

Function Documentation

int mediamuxer_add_track	(	mediamuxer_h	muxer,
		media_format_h	media_format,
		int *	track_index
	)

Adds the media track of interest to the muxer handle.

Since :: 3.0

Parameters:

[in]	muxer	The media muxer handle
[in]	media_format	The format of media muxer
[out]	track_index	The index of the media track

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: The media muxer state must be set to MEDIAMUXER_STATE_IDLE.

See also:: media_format_h; mediamuxer_create(); mediamuxer_prepare()

int mediamuxer_close_track	(	mediamuxer_h	muxer,
		int	track_index
	)

Closes the track from further writing of data.

Since :: 3.0

Remarks:: For each added track, user needs to call this function to indicate the end of stream.

Parameters:

[in]	muxer	The media muxer handle
[in]	track_index	The selected track index

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation

Precondition:: The media muxer state must be set to MEDIAMUXER_STATE_MUXING.

See also:: mediamuxer_write_sample(); mediamuxer_pause(); mediamuxer_unprepare(); mediamuxer_error_e

int mediamuxer_create ( mediamuxer_h * muxer )

Creates a media muxer handle for muxing.

Since :: 3.0

Remarks:: You must release muxer using mediamuxer_destroy() function.

Parameters:

[out] muxer A new handle to media muxer

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid Operation
MEDIAMUXER_ERROR_OUT_OF_MEMORY	Allocation Failed, Out of Memory.

Postcondition:: The media muxer state will be MEDIAMUXER_STATE_IDLE.

See also:: mediamuxer_destroy()

int mediamuxer_destroy ( mediamuxer_h muxer )

Removes the instance of media muxer and clear all its context memory.

Since :: 3.0

Parameters:

[in] muxer The media muxer handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: Create a media muxer handle by calling mediamuxer_create() function.

Postcondition:: The media muxer state will be MEDIAMUXER_STATE_NONE.

See also:: mediamuxer_create()

int mediamuxer_get_state	(	mediamuxer_h	muxer,
		mediamuxer_state_e *	state
	)

Gets media muxer state.

Since :: 3.0

Parameters:

[in]	muxer	The media muxer handle
[out]	state	The media muxer sate

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation

Precondition:: Create a media muxer handle by calling mediamuxer_create() function.

See also:: mediamuxer_state_e

int mediamuxer_pause ( mediamuxer_h muxer )

Pauses the media muxer.

Since :: 3.0

Remarks:: To temporarily disable writing data for muxing. This function pauses a playing muxer If the prior state of the muxer is not in PLAYING, no action will be taken.

Parameters:

[in] muxer The media muxer handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: The media muxer state must be set to MEDIAMUXER_STATE_MUXING.

Postcondition:: The media muxer state will be MEDIAMUXER_STATE_PAUSED.

See also:: mediamuxer_write_sample(); mediamuxer_resume()

int mediamuxer_prepare ( mediamuxer_h muxer )

Prepares the media muxer.

Since :: 3.0

Remarks:: Initiates the necessary parameters.

Parameters:

[in] muxer The media muxer handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: The media muxer state must be set to MEDIAMUXER_STATE_IDLE.

Postcondition:: The media muxer state will be MEDIAMUXER_STATE_READY.

See also:: mediamuxer_create(); mediamuxer_unprepare()

int mediamuxer_resume ( mediamuxer_h muxer )

Resumes the media muxer.

Since :: 3.0

Remarks:: Make it ready for any further writing. This function will resume a paused muxer. If the prior state of the muxer is not playing, no action will be taken.

Parameters:

[in] muxer The media muxer handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: The media muxer state must be set to MEDIAMUXER_STATE_PAUSED.

Postcondition:: The media muxer state will be MEDIAMUXER_STATE_MUXING.

See also:: mediamuxer_pause()

int mediamuxer_set_data_sink	(	mediamuxer_h	muxer,
		char *	path,
		mediamuxer_output_format_e	format
	)

Sets the sink path of output stream.

Since :: 3.0

Remarks:: The mediastorage privilege(http://tizen.org/privilege/mediastorage) should be added if any video/audio files are to be saved in the internal storage.; The externalstorage privilege(http://tizen.org/privilege/externalstorage) should be added if any video/audio files are to be saved in the external storage.

Parameters:

[in]	muxer	A new handle to media muxer
[in]	path	The location of the output media file, such as the file path This is the path at which the muxed file should be saved.
[in]	format	The format of the output media file

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state
MEDIAMUXER_ERROR_INVALID_PATH	Invalid path

Precondition:: The media muxer state will be MEDIAMUXER_STATE_IDLE by calling mediamuxer_create()

See also:: mediamuxer_output_format_e

int mediamuxer_set_eos_cb	(	mediamuxer_h	muxer,
		mediamuxer_eos_cb	callback,
		void *	user_data
	)

Sets an EOS (end of stream) callback function to be invoked when an EOS occurs.

Since :: 4.0

Parameters:

[in]	muxer	The media muxer handle
[in]	callback	Callback function pointer
[in]	user_data	The user data passed from the code where mediamuxer_set_eos_cb() was invoked; this data will be accessible from mediamuxer_eos_cb()

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: Create a media muxer handle by calling mediamuxer_create() function.

Postcondition:: mediamuxer_eos_cb() will be invoked.

See also:: mediamuxer_unset_eos_cb(); mediamuxer_eos_cb()

int mediamuxer_set_error_cb	(	mediamuxer_h	muxer,
		mediamuxer_error_cb	callback,
		void *	user_data
	)

Sets a error callback function to be invoked when an error occurs.

Since :: 3.0

Parameters:

[in]	muxer	The media muxer handle
[in]	callback	Callback function pointer
[in]	user_data	The user data passed from the code where mediamuxer_set_error_cb() was invoked This data will be accessible from user_data mediamuxer_error_cb()

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter

Precondition:: Create a media muxer handle by calling mediamuxer_create() function.

Postcondition:: mediamuxer_error_cb() will be invoked.

See also:: mediamuxer_unset_error_cb(); mediamuxer_error_cb()

int mediamuxer_start ( mediamuxer_h muxer )

Starts the media muxer.

Since :: 3.0

Remarks:: Keeps the muxer ready for writing data.

Parameters:

[in] muxer The media muxer handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: The media muxer state must be set to MEDIAMUXER_STATE_READY.

Postcondition:: The media muxer state will be MEDIAMUXER_STATE_MUXING.

See also:: mediamuxer_prepare(); mediamuxer_stop()

int mediamuxer_stop ( mediamuxer_h muxer )

Stops the media muxer.

Since :: 3.0

Remarks:: Keeps the muxer ready for writing data.

Parameters:

[in] muxer The media muxer handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: The media muxer state must be set to MEDIAMUXER_STATE_MUXING or MEDIAMUXER_STATE_PAUSED.

Postcondition:: The media muxer state will be MEDIAMUXER_STATE_READY.

See also:: mediamuxer_start(); mediamuxer_unprepare()

int mediamuxer_unprepare ( mediamuxer_h muxer )

Unprepares the media muxer.

Since :: 3.0

Remarks:: Unrefs the variables created after calling mediamuxer_prepare().

Parameters:

[in] muxer The media muxer handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: The media muxer state must be set to MEDIAMUXER_STATE_READY or set to MEDIAMUXER_STATE_PAUSED by calling mediamuxer_pause().

Postcondition:: The media muxer state will be MEDIAMUXER_STATE_IDLE.

See also:: mediamuxer_write_sample(); mediamuxer_pause(); mediamuxer_destroy()

int mediamuxer_unset_eos_cb ( mediamuxer_h muxer )

Unsets the EOS (end of stream) callback function.

Since :: 4.0

Parameters:

[in] muxer The media muxer handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

See also:: mediamuxer_eos_cb()

int mediamuxer_unset_error_cb ( mediamuxer_h muxer )

Unsets the error callback function.

Since :: 3.0

Parameters:

[in] muxer The media muxer handle

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: mediamuxer_error_cb()

int mediamuxer_write_sample	(	mediamuxer_h	muxer,
		int	track_index,
		media_packet_h	inbuf
	)

Writes the media packet of interest to the muxer handle.

Since :: 3.0

Parameters:

[in]	muxer	The media muxer handle
[in]	track_index	The index of the media track
[in]	inbuf	The packet of media muxer

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIAMUXER_ERROR_NONE	Successful
MEDIAMUXER_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIAMUXER_ERROR_INVALID_OPERATION	Invalid operation
MEDIAMUXER_ERROR_INVALID_STATE	Invalid state

Precondition:: The media muxer state must be set to MEDIAMUXER_STATE_READY by calling mediamuxer_prepare() or set to MEDIAMUXER_STATE_PAUSED by calling mediamuxer_pause().

Postcondition:: The media muxer state will be MEDIAMUXER_STATE_MUXING.

See also:: mediamuxer_prepare(); mediamuxer_close_track(); mediamuxer_pause(); media_packet_h

Required Header

Overview

Functions

Typedefs

Typedef Documentation

Enumeration Type Documentation

Function Documentation