The StreamRecorder API provides functions for StreamRecorder with buffer including media packet.

Required Header

#include <streamrecorder.h>

Overview

The StreamRecorder API allows application developers to support using the video or audio recorder. It includes functions that record video or audio and supports to set up notifications for state changes of creation, prepared, record, pause, information about resolution and binary data format, and functions for artistic.

The StreamRecorder API allows creation of components required in recording video or audio including:

selecting a proper output format
controlling the StreamRecorder state
getting supported formats and video resolutions

The StreamRecorder API also notifies you (by callback mechanism) when a significant parameter changes.

Difference

Basically, the StreamRecorder API can help easily to make video/audio content same as the Recorder API.

However, the StreamRecorder API is different from Recorder API.
The StreamRecorder API is able to record user buffer from application. This allows the user to make unique contents with a purpose.

Difference	Recorder	StreamRecorder
INPUT	Camera / Mic Device	Media Packet / Buffer

State Diagram

State Transitions

FUNCTION	PRE-STATE	POST-STATE	SYNC TYPE
streamrecorder_create()	NONE	CREATED	SYNC
streamrecorder_prepare()	CREATED	PREPARED	SYNC
streamrecorder_start()	PREPARED / PAUSED	RECORDING	SYNC
streamrecorder_pause()	RECORDING	PAUSED	SYNC
streamrecorder_commit()	RECORDING/ PAUSED	PREPARED	SYNC
streamrecorder_cancel()	RECORDING/ PAUSED	PREPARED	SYNC
streamrecorder_unprepare()	PREPARED	CREATED	SYNC
streamrecorder_destroy()	CREATED	NONE	SYNC

Callback(Event) Operations

The callback mechanism is used to notify the application about significant StreamRecorder events.

REGISTER	UNREGISTER	CALLBACK	DESCRIPTION
streamrecorder_set_error_cb()	streamrecorder_unset_error_cb()	streamrecorder_error_cb()	This callback is used to notify error has occurred

Foreach Operations

FOREACH	CALLBACK	DESCRIPTION
streamrecorder_foreach_supported_audio_encoder()	streamrecorder_supported_audio_encoder_cb()	Supported audio encoders
streamrecorder_foreach_supported_video_encoder()	streamrecorder_supported_video_encoder_cb()	Supported video encoders
streamrecorder_foreach_supported_file_format()	streamrecorder_supported_file_format_cb()	Supported file formats
streamrecorder_foreach_supported_video_resolution()	streamrecorder_supported_video_resolution_cb()	Supported video resolutions

Functions
int	streamrecorder_create (streamrecorder_h *recorder)
	Creates a streamrecorder handle to record a video or audio.
int	streamrecorder_destroy (streamrecorder_h recorder)
	Destroys the streamrecorder handle.
int	streamrecorder_prepare (streamrecorder_h recorder)
	Prepares the streamrecorder for recording.
int	streamrecorder_unprepare (streamrecorder_h recorder)
	Resets the streamrecorder.
int	streamrecorder_start (streamrecorder_h recorder)
	Starts the recording.
int	streamrecorder_pause (streamrecorder_h recorder)
	Pauses the recording.
int	streamrecorder_commit (streamrecorder_h recorder)
	Stops recording and saves the result.
int	streamrecorder_cancel (streamrecorder_h recorder)
	Cancels the recording.
int	streamrecorder_push_stream_buffer (streamrecorder_h recorder, media_packet_h inbuf)
	Pushes buffer to StreamRecorder to record audio/video.
int	streamrecorder_enable_source_buffer (streamrecorder_h recorder, streamrecorder_source_e type)
	Sets the video source as live buffer to be used for recording.
int	streamrecorder_get_state (streamrecorder_h recorder, streamrecorder_state_e *state)
	Gets the streamrecorder's current state.
Typedefs
typedef struct streamrecorder_s *	streamrecorder_h
	The Streamrecorder handle.

Typedef Documentation

typedef struct streamrecorder_s* streamrecorder_h

The Streamrecorder handle.

Since :: 3.0

Enumeration Type Documentation

enum streamrecorder_audio_codec_e

Enumeration for the audio codec.

Since :: 3.0

Enumerator:

STREAMRECORDER_AUDIO_CODEC_AMR	AMR codec
STREAMRECORDER_AUDIO_CODEC_AAC	AAC codec
STREAMRECORDER_AUDIO_CODEC_PCM	PCM codec

enum streamrecorder_error_e

Enumeration for Streamrecorder error type.

Since :: 3.0

Enumerator:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter
STREAMRECORDER_ERROR_INVALID_STATE	Invalid state
STREAMRECORDER_ERROR_OUT_OF_MEMORY	Out of memory
STREAMRECORDER_ERROR_INVALID_OPERATION	Internal error
STREAMRECORDER_ERROR_OUT_OF_STORAGE	Out of storage
STREAMRECORDER_ERROR_PERMISSION_DENIED	The access to the resources can not be granted
STREAMRECORDER_ERROR_NOT_SUPPORTED	The feature is not supported

enum streamrecorder_file_format_e

Enumeration for the file container format.

Since :: 3.0

Enumerator:

STREAMRECORDER_FILE_FORMAT_3GP	3GP file format
STREAMRECORDER_FILE_FORMAT_MP4	MP4 file format
STREAMRECORDER_FILE_FORMAT_AMR	AMR file format
STREAMRECORDER_FILE_FORMAT_ADTS	ADTS file format
STREAMRECORDER_FILE_FORMAT_WAV	WAV file format

enum streamrecorder_notify_e

Enumeration for the Streamrecorder notification.

Since :: 3.0

Enumerator:

STREAMRECORDER_NOTIFY_NONE	None
STREAMRECORDER_NOTIFY_STATE_CHANGED	The notification of normal state changes

enum streamrecorder_recording_limit_type_e

Enumeration for the recording limit reached.

Since :: 3.0

Enumerator:

STREAMRECORDER_RECORDING_LIMIT_TYPE_TIME	Time limit (second) of recording file
STREAMRECORDER_RECORDING_LIMIT_TYPE_SIZE	Size limit (kilo bytes [KB]) of recording file

enum streamrecorder_source_e

Enumeration for the source type.

Since :: 3.0

Enumerator:

STREAMRECORDER_SOURCE_VIDEO	Video only
STREAMRECORDER_SOURCE_AUDIO	Audio only
STREAMRECORDER_SOURCE_VIDEO_AUDIO	Video and Audio

enum streamrecorder_state_e

Enumeration for Streamrecorder states.

Since :: 3.0

Enumerator:

STREAMRECORDER_STATE_NONE	StreamRecorder is not created
STREAMRECORDER_STATE_CREATED	StreamRecorder is created, but not prepared
STREAMRECORDER_STATE_PREPARED	StreamRecorder is prepared to record
STREAMRECORDER_STATE_RECORDING	StreamRecorder is recording media
STREAMRECORDER_STATE_PAUSED	StreamRecorder is paused while recording media

enum streamrecorder_video_codec_e

Enumeration for the video codec.

Since :: 3.0

Enumerator:

STREAMRECORDER_VIDEO_CODEC_H263	H263 codec
STREAMRECORDER_VIDEO_CODEC_MPEG4	MPEG4 codec

enum streamrecorder_video_source_format_e

Enumeration for the pixel format.

Since :: 3.0

Enumerator:

STREAMRECORDER_VIDEO_SOURCE_FORMAT_INVALID	Invalid pixel format
STREAMRECORDER_VIDEO_SOURCE_FORMAT_NV12	NV12 pixel format
STREAMRECORDER_VIDEO_SOURCE_FORMAT_NV21	NV12 pixel format
STREAMRECORDER_VIDEO_SOURCE_FORMAT_I420	I420 pixel format
STREAMRECORDER_VIDEO_SOURCE_FORMAT_NUM	Number of the video source format

Function Documentation

int streamrecorder_cancel ( streamrecorder_h recorder )

Cancels the recording.

The recording data is discarded and not written in the recording file.

Since :: 3.0

Remarks:: When you want to record audio or video file, you need to add privilege according to rules below additionally.
http://tizen.org/privilege/mediastorage is needed if input or output path are relevant to media storage.
http://tizen.org/privilege/externalstorage is needed if input or output path are relevant to external storage.

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
STREAMRECORDER_ERROR_INVALID_OPERATION	Invalid operation
STREAMRECORDER_ERROR_INVALID_STATE	Invalid state
STREAMRECORDER_ERROR_PERMISSION_DENIED	The access to the resources can not be granted

Precondition:: The streamrecorder state must be STREAMRECORDER_STATE_RECORDING set by streamrecorder_start() or STREAMRECORDER_STATE_PAUSED by streamrecorder_pause().

Postcondition:: The streamrecorder state will be STREAMRECORDER_STATE_PREPARED.

See also:: streamrecorder_pause(); streamrecorder_commit(); streamrecorder_cancel(); streamrecorder_start()

int streamrecorder_commit ( streamrecorder_h recorder )

Stops recording and saves the result.

Since :: 3.0

Remarks:: When you want to record audio or video file, you need to add privilege according to rules below additionally.
http://tizen.org/privilege/mediastorage is needed if input or output path are relevant to media storage.
http://tizen.org/privilege/externalstorage is needed if input or output path are relevant to external storage.

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
STREAMRECORDER_ERROR_INVALID_OPERATION	Invalid operation
STREAMRECORDER_ERROR_INVALID_STATE	Invalid state
STREAMRECORDER_ERROR_PERMISSION_DENIED	The access to the resources can not be granted

Precondition:: The streamrecorder state must be STREAMRECORDER_STATE_RECORDING set by streamrecorder_start() or STREAMRECORDER_STATE_PAUSED by streamrecorder_pause().

Postcondition:: The streamrecorder state will be STREAMRECORDER_STATE_PREPARED.

See also:: streamrecorder_pause(); streamrecorder_cancel(); streamrecorder_set_filename(); streamrecorder_start()

int streamrecorder_create ( streamrecorder_h * recorder )

Creates a streamrecorder handle to record a video or audio.

Since :: 3.0

Remarks:: You must release recorder using streamrecorder_destroy().

Parameters:

[out] recorder A 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
STREAMRECORDER_ERROR_OUT_OF_MEMORY	Out of memory
STREAMRECORDER_ERROR_INVALID_OPERATION	Invalid operation

int streamrecorder_destroy ( streamrecorder_h recorder )

Destroys the streamrecorder handle.

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
STREAMRECORDER_ERROR_INVALID_OPERATION	Invalid operation
STREAMRECORDER_ERROR_INVALID_STATE	Invalid state

Precondition:: The recorder state should be STREAMRECORDER_STATE_CREATED.

Postcondition:: The recorder state will be STREAMRECORDER_STATE_NONE.

int streamrecorder_enable_source_buffer	(	streamrecorder_h	recorder,
		streamrecorder_source_e	type
	)

Sets the video source as live buffer to be used for recording.

Since :: 3.0

Remarks:: if you want to enable video or audio or both recording, call before streamrecorder_prepare()

Parameters:

[in]	recorder	A handle to the streamrecorder
[in]	type	The type of source input

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter
STREAMRECORDER_ERROR_INVALID_STATE	Invalid state

Precondition:: The streamrecorder state must be only STREAMRECORDER_STATE_CREATED

int streamrecorder_get_state	(	streamrecorder_h	recorder,
		streamrecorder_state_e *	state
	)

Gets the streamrecorder's current state.

Since :: 3.0

Parameters:

[in]	recorder	The handle to the streamrecorder
[out]	state	The current state of the streamrecorder

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter

int streamrecorder_pause ( streamrecorder_h recorder )

Pauses the recording.

Since :: 3.0

Remarks:: Recording can be resumed with streamrecorder_start().

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
STREAMRECORDER_ERROR_INVALID_OPERATION	Invalid operation
STREAMRECORDER_ERROR_INVALID_STATE	Invalid state

Precondition:: The streamrecorder state must be STREAMRECORDER_STATE_RECORDING.

Postcondition:: The streamrecorder state will be STREAMRECORDER_STATE_PAUSED.

See also:: streamrecorder_pause(); streamrecorder_commit(); streamrecorder_cancel()

int streamrecorder_prepare ( streamrecorder_h recorder )

Prepares the streamrecorder for recording.

Since :: 3.0

Remarks:: Before calling the function, it is required to properly set streamrecorder_enable_source_buffer(), audio encoder (streamrecorder_set_audio_encoder()), video encoder(streamrecorder_set_video_encoder()) and file format (streamrecorder_set_file_format()).

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
STREAMRECORDER_ERROR_INVALID_OPERATION	Invalid operation
STREAMRECORDER_ERROR_INVALID_STATE	Invalid state

Precondition:: The recorder state should be STREAMRECORDER_STATE_CREATED.
The streamrecorder_enable_source_buffer() should be invoked before this function.

Postcondition:: The streamrecorder state will be STREAMRECORDER_STATE_PREPARED

See also:: streamrecorder_unprepare(); streamrecorder_set_audio_encoder(); streamrecorder_set_video_encoder(); streamrecorder_set_file_format()

int streamrecorder_push_stream_buffer	(	streamrecorder_h	recorder,
		media_packet_h	inbuf
	)

Pushes buffer to StreamRecorder to record audio/video.

Since :: 3.0

Remarks:: When you want to record audio or video file, you need to add privilege according to rules below additionally.
http://tizen.org/privilege/mediastorage is needed if input or output path are relevant to media storage.
http://tizen.org/privilege/externalstorage is needed if input or output path are relevant to external storage.

Parameters:

[in]	recorder	The handle to the streamrecorder
[in]	inbuf	The media packet containing buffer and other associated values

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

Return values:

STREAMRECORDER_ERROR_NONE	Successful
STREAMRECORDER_ERROR_INVALID_PARAMETER	Invalid parameter
STREAMRECORDER_ERROR_PERMISSION_DENIED	The access to the resources can not be granted

int streamrecorder_start ( streamrecorder_h recorder )

Starts the recording.

Since :: 3.0

Remarks:: If file path has been set to an existing file, this file is removed automatically and updated by new one.
When you want to record audio or video file, you need to add privilege according to rules below additionally.
http://tizen.org/privilege/mediastorage is needed if input or output path are relevant to media storage.
http://tizen.org/privilege/externalstorage is needed if input or output path are relevant to external storage. The filename should be set before this function is invoked.

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
STREAMRECORDER_ERROR_INVALID_OPERATION	Invalid operation
STREAMRECORDER_ERROR_INVALID_STATE	Invalid state
STREAMRECORDER_ERROR_PERMISSION_DENIED	The access to the resources can not be granted

Precondition:: The streamrecorder state must be STREAMRECORDER_STATE_PREPARED by streamrecorder_prepare() or STREAMRECORDER_STATE_PAUSED by streamrecorder_pause().
The filename should be set by streamrecorder_set_filename().

Postcondition:: The recorder state will be STREAMRECORDER_STATE_RECORDING.

See also:: streamrecorder_pause(); streamrecorder_commit(); streamrecorder_cancel(); streamrecorder_set_audio_encoder(); streamrecorder_set_filename(); streamrecorder_set_file_format(); streamrecorder_recording_status_cb(); streamrecorder_set_filename()

int streamrecorder_unprepare ( streamrecorder_h recorder )

Resets the streamrecorder.

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
STREAMRECORDER_ERROR_INVALID_OPERATION	Invalid operation
STREAMRECORDER_ERROR_INVALID_STATE	Invalid state

Precondition:: The streamrecorder state should be STREAMRECORDER_STATE_PREPARED set by streamrecorder_prepare(), streamrecorder_cancel() or streamrecorder_commit().

Postcondition:: The streamrecorder state will be STREAMRECORDER_STATE_CREATED.

See also:: streamrecorder_prepare(); streamrecorder_cancel(); streamrecorder_commit()

Required Header

Overview

Difference

State Diagram

State Transitions

Callback(Event) Operations

Foreach Operations

Functions

Typedefs

Typedef Documentation

Enumeration Type Documentation

Function Documentation