rs_record_playback.h File Reference

Exposes record and playback functionality for C compilers. More...

#include "rs_types.h"

Go to the source code of this file.

Typedefs
typedef enum rs2_playback_status	rs2_playback_status
typedef void(*	rs2_playback_status_changed_callback_ptr) (rs2_playback_status)

Enumerations
enum	rs2_playback_status {   RS2_PLAYBACK_STATUS_UNKNOWN, RS2_PLAYBACK_STATUS_PLAYING, RS2_PLAYBACK_STATUS_PAUSED, RS2_PLAYBACK_STATUS_STOPPED,   RS2_PLAYBACK_STATUS_COUNT }

Functions
const char *	rs2_playback_status_to_string (rs2_playback_status status)
rs2_device *	rs2_create_record_device (const rs2_device *device, const char *file, rs2_error **error)
void	rs2_record_device_pause (const rs2_device *device, rs2_error **error)
void	rs2_record_device_resume (const rs2_device *device, rs2_error **error)
const char *	rs2_record_device_filename (const rs2_device *device, rs2_error **error)
rs2_device *	rs2_create_playback_device (const char *file, rs2_error **error)
const char *	rs2_playback_device_get_file_path (const rs2_device *device, rs2_error **error)
unsigned long long int	rs2_playback_get_duration (const rs2_device *device, rs2_error **error)
void	rs2_playback_seek (const rs2_device *device, long long int time, rs2_error **error)
unsigned long long int	rs2_playback_get_position (const rs2_device *device, rs2_error **error)
void	rs2_playback_device_resume (const rs2_device *device, rs2_error **error)
void	rs2_playback_device_pause (const rs2_device *device, rs2_error **error)
void	rs2_playback_device_set_real_time (const rs2_device *device, int real_time, rs2_error **error)
int	rs2_playback_device_is_real_time (const rs2_device *device, rs2_error **error)
void	rs2_playback_device_set_status_changed_callback (const rs2_device *device, rs2_playback_status_changed_callback *callback, rs2_error **error)
rs2_playback_status	rs2_playback_device_get_current_status (const rs2_device *device, rs2_error **error)
void	rs2_playback_device_set_playback_speed (const rs2_device *device, float speed, rs2_error **error)
void	rs2_playback_device_stop (const rs2_device *device, rs2_error **error)

Detailed Description

Exposes record and playback functionality for C compilers.

Typedef Documentation

rs2_playback_status

typedef enum rs2_playback_status rs2_playback_status

rs2_playback_status_changed_callback_ptr

typedef void(* rs2_playback_status_changed_callback_ptr) (rs2_playback_status)

Enumeration Type Documentation

rs2_playback_status

enum rs2_playback_status

Enumerator
RS2_PLAYBACK_STATUS_UNKNOWN	Unknown state
RS2_PLAYBACK_STATUS_PLAYING	One or more sensors were started, playback is reading and raising data
RS2_PLAYBACK_STATUS_PAUSED	One or more sensors were started, but playback paused reading and paused raising data
RS2_PLAYBACK_STATUS_STOPPED	All sensors were stopped, or playback has ended (all data was read). This is the initial playback status
RS2_PLAYBACK_STATUS_COUNT

Function Documentation

rs2_create_playback_device()

rs2_device* rs2_create_playback_device	(	const char *	file,
		rs2_error **	error
	)

Creates a playback device to play the content of the given file

Parameters

[in]	file	Path to the file to play
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

Returns

A pointer to a device that plays data from the file, or null in case of failure

rs2_create_record_device()

rs2_device* rs2_create_record_device	(	const rs2_device *	device,
		const char *	file,
		rs2_error **	error
	)

Creates a recording device to record the given device and save it to the given file

Parameters

[in]	device	The device to record
[in]	file	The desired path to which the recorder should save the data
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

Returns

A pointer to a device that records its data to file, or null in case of failure

rs2_playback_device_get_current_status()

rs2_playback_status rs2_playback_device_get_current_status	(	const rs2_device *	device,
		rs2_error **	error
	)

Returns the current state of the playback device

Parameters

[in]	device	A playback device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

Returns

Current state of the playback

rs2_playback_device_get_file_path()

const char* rs2_playback_device_get_file_path	(	const rs2_device *	device,
		rs2_error **	error
	)

Gets the path of the file used by the playback device

Parameters

[in]	device	A playback device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

Returns

Path to the file used by the playback device

rs2_playback_device_is_real_time()

int rs2_playback_device_is_real_time	(	const rs2_device *	device,
		rs2_error **	error
	)

Indicates if playback is in real time mode or non real time

Parameters

[in]	device	A playback device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

Returns

True iff playback is in real time mode. 0 means false, otherwise true

rs2_playback_device_pause()

void rs2_playback_device_pause	(	const rs2_device *	device,
		rs2_error **	error
	)

Un-pauses the playback Calling resume() while playback status is "Playing" or "Stopped" does nothing

Parameters

[in]	device	A playback device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

rs2_playback_device_resume()

void rs2_playback_device_resume	(	const rs2_device *	device,
		rs2_error **	error
	)

Pauses the playback Calling pause() in "Paused" status does nothing If pause() is called while playback status is "Playing" or "Stopped", the playback will not play until resume() is called

Parameters

[in]	device	A playback device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

rs2_playback_device_set_playback_speed()

void rs2_playback_device_set_playback_speed	(	const rs2_device *	device,
		float	speed,
		rs2_error **	error
	)

Set the playing speed

Parameters

[in]	device	A playback device
[in]	speed	Indicates a multiplication of the speed to play (e.g: 1 = normal, 0.5 twice as slow)
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

rs2_playback_device_set_real_time()

void rs2_playback_device_set_real_time	(	const rs2_device *	device,
		int	real_time,
		rs2_error **	error
	)

Set the playback to work in real time or non real time

In real time mode, playback will play the same way the file was recorded. In real time mode if the application takes too long to handle the callback, frames may be dropped. In non real time mode, playback will wait for each callback to finish handling the data before reading the next frame. In this mode no frames will be dropped, and the application controls the frame rate of the playback (according to the callback handler duration).

Parameters

[in]	device	A playback device
[in]	real_time	Indicates if real time is requested, 0 means false, otherwise true
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

rs2_playback_device_set_status_changed_callback()

void rs2_playback_device_set_status_changed_callback	(	const rs2_device *	device,
		rs2_playback_status_changed_callback *	callback,
		rs2_error **	error
	)

Register to receive callback from playback device upon its status changes

Callbacks are invoked from the reading thread, any heavy processing in the callback handler will affect the reading thread and may cause frame drops\ high latency

Parameters

[in]	device	A playback device
[in]	callback	A callback handler that will be invoked when the playback status changes
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

rs2_playback_device_stop()

void rs2_playback_device_stop	(	const rs2_device *	device,
		rs2_error **	error
	)

Stops the playback Calling stop() will stop all streaming playbakc sensors and will reset the playback (returning to beginning of file)

Parameters

[in]	device	A playback device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

rs2_playback_get_duration()

unsigned long long int rs2_playback_get_duration	(	const rs2_device *	device,
		rs2_error **	error
	)

Gets the total duration of the file in units of nanoseconds

Parameters

[in]	device	A playback device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

Returns

Total duration of the file in units of nanoseconds

rs2_playback_get_position()

unsigned long long int rs2_playback_get_position	(	const rs2_device *	device,
		rs2_error **	error
	)

Gets the current position of the playback in the file in terms of time. Units are expressed in nanoseconds

Parameters

[in]	device	A playback device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

Returns

Current position of the playback in the file in terms of time. Units are expressed in nanoseconds

rs2_playback_seek()

void rs2_playback_seek	(	const rs2_device *	device,
		long long int	time,
		rs2_error **	error
	)

Set the playback to a specified time point of the played data

Parameters

[in]	device	A playback device.
[in]	time	The time point to which playback should seek, expressed in units of nanoseconds (zero value = start)
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

rs2_playback_status_to_string()

const char* rs2_playback_status_to_string

(

rs2_playback_status

status

)

rs2_record_device_filename()

const char* rs2_record_device_filename	(	const rs2_device *	device,
		rs2_error **	error
	)

Gets the name of the file to which the recorder is writing

Parameters

[in]	device	A recording device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

Returns

The name of the file to which the recorder is writing

rs2_record_device_pause()

void rs2_record_device_pause	(	const rs2_device *	device,
		rs2_error **	error
	)

Pause the recording device without stopping the actual device from streaming. Pausing will cause the device to stop writing new data to the file, in particular, frames and changes to extensions

Parameters

[in]	device	A recording device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored

rs2_record_device_resume()

void rs2_record_device_resume	(	const rs2_device *	device,
		rs2_error **	error
	)

Unpause the recording device. Resume will cause the device to continue writing new data to the file, in particular, frames and changes to extensions

Parameters

[in]	device	A recording device
[out]	error	If non-null, receives any error that occurs during this call, otherwise, errors are ignored