The Callback API Callbacks from the StreamRecorder frameworks.

Required Header

#include <streamrecorder.h>

Overview

The StreamRecorder Callback API provides functions status.

Functions
int	streamrecorder_set_notify_cb (streamrecorder_h recorder, streamrecorder_notify_cb callback, void *user_data)
	Registers the callback function that will be invoked when the streamrecorder get some notification.
int	streamrecorder_unset_notify_cb (streamrecorder_h recorder)
	Unregisters the callback function.
int	streamrecorder_set_recording_status_cb (streamrecorder_h recorder, streamrecorder_recording_status_cb callback, void *user_data)
	Registers a callback function to be invoked when the recording information changes.
int	streamrecorder_unset_recording_status_cb (streamrecorder_h recorder)
	Unregisters the callback function.
int	streamrecorder_set_recording_limit_reached_cb (streamrecorder_h recorder, streamrecorder_recording_limit_reached_cb callback, void *user_data)
	Registers the callback function to be run when reached the recording limit.
int	streamrecorder_unset_recording_limit_reached_cb (streamrecorder_h recorder)
	Unregisters the callback function.
int	streamrecorder_set_error_cb (streamrecorder_h recorder, streamrecorder_error_cb callback, void *user_data)
	Registers a callback function to be called when an asynchronous operation error occurred.
int	streamrecorder_unset_error_cb (streamrecorder_h recorder)
	Unregisters the callback function.
int	streamrecorder_set_buffer_consume_completed_cb (streamrecorder_h recorder, streamrecorder_consume_completed_cb callback, void *user_data)
	Registers a callback function to be called when asynchronous buffers are consumed.
int	streamrecorder_unset_buffer_consume_completed_cb (streamrecorder_h recorder)
	Unregisters the callback function.
Typedefs
typedef void(*	streamrecorder_recording_limit_reached_cb )(streamrecorder_recording_limit_type_e type, void *user_data)
	Called when limitation error occurs while recording.
typedef void(*	streamrecorder_recording_status_cb )(unsigned long long elapsed_time, unsigned long long file_size, void *user_data)
	Called to indicate the recording status.
typedef void(*	streamrecorder_notify_cb )(streamrecorder_state_e previous, streamrecorder_state_e current, streamrecorder_notify_e notification, void *user_data)
	Called when the streamrecorder gets some notifications.
typedef void(*	streamrecorder_error_cb )(streamrecorder_error_e error, streamrecorder_state_e current_state, void *user_data)
	Called when the error occurred.
typedef void(*	streamrecorder_consume_completed_cb )(void buffer, void user_data)
	Called iteratively to notify about the buffer has been consumed.

Typedef Documentation

typedef void(* streamrecorder_consume_completed_cb)(void *buffer, void *user_data)

Called iteratively to notify about the buffer has been consumed.

Since :: 3.0

Remarks:: The user needs to release consumed buffer if buffer is allocated by user including media packet

Parameters:

[in]	buffer	The consumed buffer that user pushed
[in]	user_data	The user data passed

See also:: streamrecorder_set_buffer_consume_completed_cb() will invoke this callback.; streamrecorder_unset_buffer_consume_completed_cb()

typedef void(* streamrecorder_error_cb)(streamrecorder_error_e error, streamrecorder_state_e current_state, void *user_data)

Called when the error occurred.

Since :: 3.0

Remarks:: This callback informs about the critical error situation.
When being invoked, user should release the resource and terminate the application.
This error code will be reported.
STREAMRECORDER_ERROR_INVALID_OPERATION
STREAMRECORDER_ERROR_OUT_OF_MEMORY

Parameters:

[in]	error	The error code
[in]	current_state	The current state of the streamrecorder
[in]	user_data	The user data passed from the callback registration function

Precondition:: This callback function is invoked if you register this callback using streamrecorder_set_error_cb().

See also:: streamrecorder_set_error_cb(); streamrecorder_unset_error_cb()

typedef void(* streamrecorder_notify_cb)(streamrecorder_state_e previous, streamrecorder_state_e current, streamrecorder_notify_e notification, void *user_data)

Called when the streamrecorder gets some notifications.

Since :: 3.0

Parameters:

[in]	previous	The previous state of the streamrecorder
[in]	current	The current state of the streamrecorder
[in]	notification	The notification type of the streamrecorder
[in]	user_data	The user data passed from the callback registration function

Precondition:: This function is required to register a callback using streamrecorder_set_notify_cb().

See also:: streamrecorder_set_notify_cb(); streamrecorder_prepare(); streamrecorder_unprepare(); streamrecorder_start(); streamrecorder_pause(); streamrecorder_commit(); streamrecorder_cancel()

typedef void(* streamrecorder_recording_limit_reached_cb)(streamrecorder_recording_limit_type_e type, void *user_data)

Called when limitation error occurs while recording.

The callback function is possible to receive three types of limits: time and size.

Since :: 3.0

Remarks:: After being called, recording data except present recorded data will be discarded and not written in the recording file. Also the state of streamrecorder is not changed.

Parameters:

[in]	type	The imitation type
[in]	user_data	The user data passed from the callback registration function

Precondition:: You have to register a callback using streamrecorder_set_recording_limit_reached_cb().

See also:: streamrecorder_set_recording_status_cb(); streamrecorder_set_recording_limit_reached_cb(); streamrecorder_unset_recording_limit_reached_cb()

typedef void(* streamrecorder_recording_status_cb)(unsigned long long elapsed_time, unsigned long long file_size, void *user_data)

Called to indicate the recording status.

Since :: 3.0

Remarks:: This callback function is repeatedly invoked during the STREAMRECORDER_STATE_RECORDING state.

Parameters:

[in]	elapsed_time	The time of the recording (milliseconds)
[in]	file_size	The size of the recording file (KB)
[in]	user_data	The user data passed from the callback registration function

Precondition:: streamrecorder_start() will invoke this callback if you register it using streamrecorder_set_recording_status_cb().

See also:: streamrecorder_set_recording_status_cb(); streamrecorder_unset_recording_status_cb(); streamrecorder_start()

Function Documentation

int streamrecorder_set_buffer_consume_completed_cb	(	streamrecorder_h	recorder,
		streamrecorder_consume_completed_cb	callback,
		void *	user_data
	)

Registers a callback function to be called when asynchronous buffers are consumed.

Since :: 3.0

Remarks:: This callback informs to user dealloc buffer.
When this callback is invoked, user should release the buffer or media packet.

Parameters:

[in]	recorder	The handle to the streamrecorder
[in]	callback	The callback function to register
[in]	user_data	The user data to be passed to the callback function

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: streamrecorder_unset_buffer_consume_completed_cb(); streamrecorder_push_stream_buffer()

int streamrecorder_set_error_cb	(	streamrecorder_h	recorder,
		streamrecorder_error_cb	callback,
		void *	user_data
	)

Registers a callback function to be called when an asynchronous operation error occurred.

Since :: 3.0

Remarks:: This callback informs critical error situation.
When this callback is invoked, user should release the resource and terminate the application.
These error codes will occur.
STREAMRECORDER_ERROR_INVALID_OPERATION
STREAMRECORDER_ERROR_OUT_OF_MEMORY

Parameters:

[in]	recorder	The handle to the streamrecorder
[in]	callback	The callback function to register
[in]	user_data	The user data to be passed to the callback function

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

Postcondition:: This function will invoke streamrecorder_error_cb() when an asynchronous operation error occur.

See also:: streamrecorder_unset_error_cb(); streamrecorder_error_cb()

int streamrecorder_set_notify_cb	(	streamrecorder_h	recorder,
		streamrecorder_notify_cb	callback,
		void *	user_data
	)

Registers the callback function that will be invoked when the streamrecorder get some notification.

Since :: 3.0

Parameters:

[in]	recorder	The handle to the streamrecorder
[in]	callback	The function pointer of user callback
[in]	user_data	The user data to be passed to the callback function

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

Postcondition:: streamrecorder_notify_cb() will be invoked.

See also:: streamrecorder_unset_notify_cb(); streamrecorder_notify_cb()

int streamrecorder_set_recording_limit_reached_cb	(	streamrecorder_h	recorder,
		streamrecorder_recording_limit_reached_cb	callback,
		void *	user_data
	)

Registers the callback function to be run when reached the recording limit.

Since :: 3.0

Parameters:

[in]	recorder	The handle to streamrecorder
[in]	callback	The function pointer of user callback
[in]	user_data	The user data to be passed to the callback function

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

Postcondition:: streamrecorder_recording_limit_reached_cb() will be invoked.

See also:: streamrecorder_unset_recording_limit_reached_cb(); streamrecorder_set_size_limit(); streamrecorder_set_time_limit(); streamrecorder_recording_limit_reached_cb()

int streamrecorder_set_recording_status_cb	(	streamrecorder_h	recorder,
		streamrecorder_recording_status_cb	callback,
		void *	user_data
	)

Registers a callback function to be invoked when the recording information changes.

Since :: 3.0

Parameters:

[in]	recorder	The handle to the streamrecorder
[in]	callback	The function pointer of user callback
[in]	user_data	The user data to be passed to the callback function

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

Postcondition:: streamrecorder_recording_status_cb() will be invoked.

See also:: streamrecorder_unset_recording_status_cb(); streamrecorder_recording_status_cb()

int streamrecorder_unset_buffer_consume_completed_cb ( streamrecorder_h recorder )

Unregisters the callback function.

Since :: 3.0

Parameters:

[in] recorder The handle to the streamrecorder

Returns:: on success, otherwise a negative error value

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: streamrecorder_set_buffer_consume_completed_cb()

int streamrecorder_unset_error_cb ( streamrecorder_h recorder )

Unregisters the callback function.

Since :: 3.0

Parameters:

[in] recorder The handle to the streamrecorder

Returns:: on success, otherwise a negative error value

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: streamrecorder_set_error_cb()

int streamrecorder_unset_notify_cb ( streamrecorder_h recorder )

Unregisters the callback function.

Since :: 3.0

Parameters:

[in] recorder The handle to the streamrecorder

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: streamrecorder_set_notify_cb()

int streamrecorder_unset_recording_limit_reached_cb ( streamrecorder_h recorder )

Unregisters the callback function.

Since :: 3.0

Parameters:

[in] recorder The handle to the streamrecorder

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: streamrecorder_set_recording_limit_reached_cb()

int streamrecorder_unset_recording_status_cb ( streamrecorder_h recorder )

Unregisters the callback function.

Since :: 3.0

Parameters:

[in] recorder The handle to the streamrecorder

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: streamrecorder_set_recording_status_cb()

Required Header

Overview

Functions

Typedefs

Typedef Documentation

Function Documentation