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ADTF
3.18.2
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The Playback Service plays back .adtfdat Files recorded with the ADTFDAT File Recorder.
| Plugin Filename | adtf_playback.adtfplugin |
|---|---|
| Plugin Description | adtf_playback.plugindescription |
| Plugin Name | Playback Service Plugin |
| License | ADTF |
| Support Mail | support@digitalwerk.net |
| Homepage URL | https://support.digitalwerk.net/ |
| Plugin Version | 3.18.2 |
|---|---|
| Plugin File Version | 1.0 |
| adtf | 3.18.2 |
| adtf::ucom | 3.1.0 |
| Name | Playback Service |
|---|---|
| CID | playback.service.adtf.cid |
| Description | Use this System Service to extend the ADTF System with playback support for ADTF 3.x .adtfdat, ADTF 2.x .dat files and adtf_file::Reader objects. |
| Type | Service |
| Default Runlevel | system |
| Name | Value | Type | Description | Subproperties |
|---|---|---|---|---|
| control_clock | true | tBool | If enabled, that all Play()/Pause() calls will also control the current stream clock. | |
| emulate_clocks | true | tBool | If enabled, clocks recorded in the files will also be emulated during playback. | |
| extract_attached_files_from | cFilenameList | A semi-colon separated list of ADTFDAT files that the attached files should be extracted from during service initialization. | ||
| extract_attached_files_from_opened_files | false | tBool | If set, attached files will be extracted whenever a set of playback files is opened. | |
| extraction_destination_directory | $(ADTF_SESSION_DIR)/attached_files | cFilepath | The directory where all attached files should be extracted to. | |
| ignore_invalid_timestamps | false | tBool | CAUTION! When enabled playback will continue even in the case that chunk timestamps within each playback file are NOT monotonically increasing. The Playback Service will ignore these INVALID timestamps and the clock will be frozen at the latest/highest timestamp while already outdated stream elements catch up without any ordering guarantees. The use of this option is greatly discouraged as it CANNOT offer a determenistic and usable playback in any way and only hides errors already present further up your data processing chain! | |
| ignore_open_errors | false | tBool | if enabled, files that can not be opened are ignored. | |
| ignore_unknown_classes | false | tBool | If enabled, playback will continue even in case it cannot find the deserializer implementation of one ore more streams. | |
| interpolate_stream_time | false | tBool | When enabled the stream time will continue to go forward between two playback items being sent. Otherwise the time will be increased in discrete steps. Mind that this property only has an effect when 'control_clock' is enabled. | |
| load_referenced_files | true | tBool | if the property is set, additional files referenced in the current playback file are loaded as well. | |
| loop_mode | 0 | tUInt32 | Whether or not and how playback should be restarted when the end of all streams is reached. This also applies to playlists. | Value List: do not loop = 0 seek to start = 1 change runlevel = 2 |
| maximum_playback_thread_count | 1 | tUInt32 | Specifies the maximum number of threads that should be used for playback. If this is not equal to 1, multi threaded playback will be used. Keep in mind that the order of samples is non-deterministic in this case! Note that you have to set interpolate_stream_time = True and emulate_clocks = False in this setup. A value of 0 means that as many threads as possible will be used for the current set of files. | |
| playback_clock_mode | 0 | tInt32 | Whether or not the playback clock should advertise itself as a system clock. This is relevant for Sync2Ref handling during playback. Auto-detect tries to make a guess based on timestamp size and clock names. Mind that this property only has an effect when 'control_clock' is enabled. | Value List: auto detect = 0 system clock = 1 independent clock = 2 |
| playback_filenames | cFilenameList | The list of files (semi-colon) that should be played back. This might be overriden by the Playback Input Source. | Filename Extension Filter: ADTF DAT files (*.dat *.adtfdat),All files (*) | |
| playback_speed | 1 | tFloat32 | The playback speed factor: e.g. 0.5 = half the playback speed, 4 = four times faster. | |
| playlist_filename | cFilename | If set, each line in the given file will be used to open the specified files, start playback and wait until the end of all streams is reached. Use the 'loop_mode' and 'runlevel_after_end_of_streams' properties to control what happens in between of playlist entries. This property and the 'playback_filenames' property can only be used exclusively. | Filename Extension Filter: ADTF Playlist files (*.adtfplaylist),All files (*) | |
| read_ahead_queue_length | 1000000 | tUInt64 | The time span (us) that the read thread will contineously read form the file in advance. | |
| reader_id | cString | Use this property to force the use of a specific reader implementation. If empty, the first capable reader will be used. | ||
| reset_simulation_clock | true | tBool | If enabled, the simulation clock will be reset to the beginning of the playback sequence. | |
| runlevel_after_end_of_playlist | 0 | tInt32 | If the property is != -1 then the service will decrease the runlevel to this value after the end of the playlist has been reached. Note that it will never increase the runlevel based on this property. | Value List: none = -1 Filter Graph = 4 Streaming Graph = 3 Session = 2 System = 1 Shutdown = 0 |
| runlevel_after_end_of_streams | 4 | tInt32 | If the property is != -1 then the service will decrease the runlevel to this value after the end of all streams has been reached. Note that it will never increase the runlevel based on this property. | Value List: none = -1 Filter Graph = 4 Streaming Graph = 3 Session = 2 System = 1 Shutdown = 0 |
| try_realtime_playback | true | tBool | This property is no longer in use, please use change this settting at the clock service directly. |
| IID |
|---|
| reference_clock.riddler.streaming.adtf.iid |
| kernel.penguin.services.adtf.iid |
| adtf_file_objects.devil.services.adtf.iid |
| IID |
|---|
| playback_service.services.adtf.iid |
| player.ant.services.adtf.iid |
| player.bat.services.adtf.iid |
| player.elasto.remote.adtf |
| player.quiet.services.adtf.iid |
The Playback Service will create Time Barriers for all playback items at the current ADTF Stream Clock (see Time Barrier Architecture and Offline Mode (Playback/Re-Simulation)). This ensures that the simulated ADTF Stream Time matches the progress of time during recording. There can be only one ADTFDAT File Player in the current Streaming Graph and Filter Graph.
To create a Streaming Source for a Player instance within your Streaming Graph / Filter Graph to provide the Samples, use the ADTFDAT File Player.
The Playback Service supports playback of multiple .adtfdat Files and will always play back the recorded Samples in correct relation and timestamps compared to recording. This is not only mandatory to guarantee that the Offline Mode (Playback/Re-Simulation) is equal to to the Online Mode (Live) during recording, it also required when loading several .adtfdat files at once. These are the possible options for simultaneously playback of multiple .adtfdat files:
In both cases, ADTF will merge all files together and plays each Sample according to its timestamp.
The delivered service implementation follows the interface definition of adtf::services::ant::IPlayer.
The Playback Service can be control from any instance. It will not react on or result in a runlevel change of the system! See ADTFDAT File Player for controlling.
The control interface is delivered within your installation:
See adtf::services::ant::IPlayer for interface documentation.