add async stoppers to gst pipelines
This commit is contained in:
petrucci4prez
parent
e4a8e6f663
commit
cefcbe613d
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@ -11,7 +11,7 @@ from listeners import KeypadListener, PipeListener
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from blinkenLights import Blinkenlights
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from soundLib import SoundLib
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from webInterface import initWebInterface
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from stream import initCamera, FileDump
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from stream import Camera, FileDump
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logger = logging.getLogger(__name__)
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@ -135,22 +135,22 @@ class StateMachine:
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self.LED = Blinkenlights(17)
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initCamera()
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self.camera = Camera()
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def action():
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if self.currentState == self.states.armed:
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self.selectState(SIGNALS.TRIGGER)
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fileDump = FileDump()
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self.fileDump = FileDump()
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sensitiveStates = (self.states.armed, self.states.armedCountdown, self.states.triggered)
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def actionVideo(pin):
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if self.currentState in sensitiveStates:
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self.selectState(SIGNALS.TRIGGER)
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fileDump.addInitiator(pin)
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self.fileDump.addInitiator(pin)
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while GPIO.input(pin) and self.currentState in sensitiveStates:
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time.sleep(0.1)
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fileDump.removeInitiator(pin)
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self.fileDump.removeInitiator(pin)
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setupMotionSensor(5, 'Nate\'s room', action)
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setupMotionSensor(19, 'front door', action)
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@ -210,6 +210,12 @@ class StateMachine:
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if hasattr(self, 'LED'):
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self.LED.__del__()
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if hasattr(self, 'camera'):
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self.camera.__del__()
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if hasattr(self, 'fileDump'):
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self.fileDump.__del__()
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if hasattr(self, 'soundLib'):
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self.soundLib.__del__()
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532
stream.py
532
stream.py
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@ -14,7 +14,7 @@ From a logging an error handling standpoint, all 'errors' here are logged as
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import gi, time, os, logging
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from datetime import datetime
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from threading import Thread, Lock
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from threading import Lock, Event
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from auxilary import waitForPath, mkdirSafe
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from exceptionThreading import async
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@ -31,7 +31,7 @@ from gi.repository import Gst, GObject
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class GstException(Exception):
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pass
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def gstPrintMsg(pName, frmt, *args, level=logging.DEBUG, sName=None):
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def _gstPrintMsg(pName, frmt, *args, level=logging.DEBUG, sName=None):
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if sName:
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logger.log(level, '[{}] [{}] '.format(pName, sName) + frmt.format(*args))
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else:
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@ -39,15 +39,15 @@ def gstPrintMsg(pName, frmt, *args, level=logging.DEBUG, sName=None):
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if level == logging.ERROR:
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raise GstException
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def processErrorMessage(pName, sName, msg):
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def _processErrorMessage(pName, sName, msg):
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error, debug = msg.parse_error()
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if debug:
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gstPrintMsg(pName, '{} - Additional debug info: {}', error.message, debug,
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_gstPrintMsg(pName, '{} - Additional debug info: {}', error.message, debug,
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level=logging.ERROR, sName=sName)
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else:
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gstPrintMsg(pName, error.message, level=logging.ERROR, sName=sName)
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_gstPrintMsg(pName, error.message, level=logging.ERROR, sName=sName)
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def linkElements(e1, e2, caps=None):
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def _linkElements(e1, e2, caps=None):
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if caps:
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if not e1.link_filtered(e2, caps):
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logger.error('cannot link \"%s\" to \"%s\" with caps %s',
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@ -58,273 +58,308 @@ def linkElements(e1, e2, caps=None):
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logger.error('cannot link \%s\" to \"%s\"', e1.get_name(), e2.get_name())
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raise SystemExit
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def linkTee(tee, *args):
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i = 0
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for e in args:
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teePad = tee.get_request_pad('src_{}'.format(i))
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ePad = e.get_static_pad('sink')
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teePad.link(ePad)
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i += 1
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class ThreadedPipeline:
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'''
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Launches a Gst Pipeline in a separate thread. Note that the 'threaded'
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aspect is impimented via and async decorator around the mainLoop below
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'''
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def __init__(self, pName):
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self._pipeline = Gst.Pipeline.new(pName)
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self._stopper = Event()
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# TODO: make it clearer which pipeline everything comes from
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def eventLoop(pipeline, block=True, doProgress=False, targetState=Gst.State.PLAYING):
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buffering = False
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inProgress = False
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prerolled = targetState != Gst.State.PAUSED
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def start(self, play=True):
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self._startPipeline(play)
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pName = pipeline.get_name()
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bus = pipeline.get_bus()
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# TODO: this might not all be necessary
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def stop(self):
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self._stopper.set()
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self._pipeline.set_state(Gst.State.NULL)
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logger.debug('Shut down gstreamer pipeline: %s', self._pipeline.get_name())
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# TODO: add killswitch to exit this thread?
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while 1:
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msg = bus.timed_pop(1e18 if block else 0)
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def __del__(self):
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self.stop()
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if not msg:
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return
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# TODO: make it clearer which pipeline everything comes from
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def _eventLoop(self, block=True, doProgress=False, targetState=Gst.State.PLAYING):
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'''
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This is the main loop that processes information on the bus and decides
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how the pipeline should react. Sometimes this entails spitting out
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messages, others it involves changing state or some other manipulation.
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'''
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buffering = False
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inProgress = False
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prerolled = targetState != Gst.State.PAUSED
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msgSrc = msg.src
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msgSrcName = msgSrc.get_name()
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pName = self._pipeline.get_name()
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bus = self._pipeline.get_bus()
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msgType = msg.type
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msgTypeName = Gst.MessageType.get_name(msgType)
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while self._stopper:
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# TODO: if we actually want to stop the pipeline asyncronously we
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# need to post a message on the bus that tells it to stop. Otherwise
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# it will wait here forever (or will be terminated as a daemon
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# thread by its parent)
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msg = bus.timed_pop(1e18 if block else 0)
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# messages that involve manipulating the pipeline
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if msgType == Gst.MessageType.REQUEST_STATE:
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state = msg.parse_request_state()
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logger.info('Setting state to %s as requested by %s', state.value_name, msgSrcName)
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pipeline.set_state(state)
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elif msgType == Gst.MessageType.CLOCK_LOST:
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logger.debug('Clock lost. Getting new one.')
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pipeline.set_state(Gst.State.PAUSED)
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pipeline.set_state(Gst.State.PLAYING)
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elif msgType == Gst.MessageType.LATENCY:
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gstPrintMsg(pName, 'Redistributing latency', sName=msgSrcName)
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pipeline.recalculate_latency()
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# messages that do not require pipeline manipulation
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elif msgType == Gst.MessageType.BUFFERING:
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gstPrintMsg(pName, 'Buffering: {}', msg.parse_buffering(), sName=msgSrcName)
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elif msgType == Gst.MessageType.NEW_CLOCK:
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clock = msg.parse_new_clock()
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clock = clock.get_name() if clock else 'NULL'
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gstPrintMsg(pName, 'New clock: {}', clock)
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elif msgType == Gst.MessageType.INFO:
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error, debug = msg.parse_info()
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if debug:
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gstPrintMsg(pName, debug, level=logging.INFO, sName=msgSrcName)
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elif msgType == Gst.MessageType.WARNING:
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error, debug = msg.parse_warning()
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if debug:
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gstPrintMsg(pName, '{} - Additional debug info: {}', error.message,
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debug, level=logging.WARNING, sName=msgSrcName)
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else:
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gstPrintMsg(pName, error.message, level=logging.WARNING, sName=msgSrcName)
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elif msgType == Gst.MessageType.ERROR:
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processErrorMessage(pName, msgSrcName, msg)
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elif msgType == Gst.MessageType.STATE_CHANGED:
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# we only care about pipeline level state changes
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if msgSrc == pipeline:
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old, new, pending = msg.parse_state_changed()
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# we only care if we reach the final target state
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if targetState == Gst.State.PAUSED and new == Gst.State.PAUSED:
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prerolled = True
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if buffering:
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gstPrintMsg(pName, 'Prerolled, waiting for buffering to finish',
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level=logging.INFO)
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continue
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if inProgress:
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gstPrintMsg(pName, 'Prerolled, waiting for progress to finish',
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level=logging.INFO)
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continue
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return
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elif msgType == Gst.MessageType.PROGRESS:
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progressType, code, text = msg.parse_progress()
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if (progressType == Gst.ProgressType.START or
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progressType == Gst.ProgressType.CONTINUE):
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if doProgress:
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inProgress = True
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block = True
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elif (progressType == Gst.ProgressType.COMPLETE or
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progressType == Gst.ProgressType.CANCELLED or
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progressType == Gst.ProgressType.ERROR):
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inProgress = False
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gstPrintMsg(pName, 'Progress: ({}) {}', code, text, sName=msgSrcName)
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if doProgress and not inProgress and not buffering and prerolled:
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if not msg:
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return
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elif msgType == Gst.MessageType.HAVE_CONTEXT:
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context = msg.parse_have_context()
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gstPrintMsg(
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pName,
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'Got context: {}={}',
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context.get_context_type(),
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context.get_structure().to_string(),
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sName = msgSrcName
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)
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msgSrc = msg.src
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msgSrcName = msgSrc.get_name()
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elif msgType == Gst.MessageType.PROPERTY_NOTIFY:
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obj, propName, val = msg.parse_property_notify()
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msgType = msg.type
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msgTypeName = Gst.MessageType.get_name(msgType)
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valStr = '(no value)'
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# messages that involve manipulating the pipeline
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if msgType == Gst.MessageType.REQUEST_STATE:
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state = msg.parse_request_state()
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if val:
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if GObject.type_check_value_holds(val, GObject.TYPE_STRING):
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valStr = val.dup_string()
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logger.info('Setting state to %s as requested by %s',
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state.value_name, msgSrcName)
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elif val.g_type.is_a(Gst.Caps.__gtype__):
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valStr = val.get_boxed().to_string()
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self._pipeline.set_state(state)
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elif msgType == Gst.MessageType.CLOCK_LOST:
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logger.debug('Clock lost. Getting new one.')
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self._pipeline.set_state(Gst.State.PAUSED)
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self._pipeline.set_state(Gst.State.PLAYING)
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elif msgType == Gst.MessageType.LATENCY:
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_gstPrintMsg(pName, 'Redistributing latency', sName=msgSrcName)
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self._pipeline.recalculate_latency()
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# messages that do not require pipeline manipulation
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elif msgType == Gst.MessageType.BUFFERING:
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_gstPrintMsg(pName, 'Buffering: {}', msg.parse_buffering(), sName=msgSrcName)
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elif msgType == Gst.MessageType.NEW_CLOCK:
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clock = msg.parse_new_clock()
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clock = clock.get_name() if clock else 'NULL'
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_gstPrintMsg(pName, 'New clock: {}', clock)
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elif msgType == Gst.MessageType.INFO:
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error, debug = msg.parse_info()
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if debug:
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_gstPrintMsg(pName, debug, level=logging.INFO, sName=msgSrcName)
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elif msgType == Gst.MessageType.WARNING:
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error, debug = msg.parse_warning()
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if debug:
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_gstPrintMsg(pName, '{} - Additional debug info: {}', error.message,
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debug, level=logging.WARNING, sName=msgSrcName)
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else:
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valStr = Gst.value_serialize(val)
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_gstPrintMsg(pName, error.message, level=logging.WARNING, sName=msgSrcName)
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gstPrintMsg(pName, '{}: {} = {}', obj.get_name(), propName, valStr, sName=msgSrcName)
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elif msgType == Gst.MessageType.ERROR:
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_processErrorMessage(pName, msgSrcName, msg)
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# these are things I might not need...
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elif msgType == Gst.MessageType.STREAM_START:
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if msgSrc == pipeline:
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gstPrintMsg(pName, 'Started stream', level=logging.INFO)
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elif msgType == Gst.MessageType.STATE_CHANGED:
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# we only care about pipeline level state changes
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if msgSrc == self._pipeline:
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old, new, pending = msg.parse_state_changed()
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elif msgType == Gst.MessageType.QOS:
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frmt, processed, dropped = msg.parse_qos_stats()
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jitter, proportion, quality = msg.parse_qos_values()
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# we only care if we reach the final target state
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if targetState == Gst.State.PAUSED and new == Gst.State.PAUSED:
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prerolled = True
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gstPrintMsg(
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pName,
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'QOS stats: jitter={} dropped={}',
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jitter,
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'-' if frmt == Gst.Format.UNDEFINED else dropped,
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sName = msgSrcName
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)
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if buffering:
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_gstPrintMsg(pName, 'Prerolled, waiting for buffering to finish',
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level=logging.INFO)
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continue
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elif msgType == Gst.MessageType.ELEMENT:
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gstPrintMsg(pName, 'Unknown message ELEMENT', sName=msgSrcName)
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if inProgress:
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_gstPrintMsg(pName, 'Prerolled, waiting for progress to finish',
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level=logging.INFO)
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continue
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elif msgType == Gst.MessageType.UNKNOWN:
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gstPrintMsg(pName, 'Unknown message', sName=msgSrcname)
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return
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@async(daemon=True)
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def mainLoop(pipeline):
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eventLoop(pipeline, block=True, doProgress=False, targetState=Gst.State.PLAYING)
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elif msgType == Gst.MessageType.PROGRESS:
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progressType, code, text = msg.parse_progress()
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def startPipeline(pipeline, play=True):
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pName = pipeline.get_name()
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stateChange = pipeline.set_state(Gst.State.PAUSED)
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gstPrintMsg(pName, 'Setting to PAUSED', level=logging.INFO)
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if (progressType == Gst.ProgressType.START or
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progressType == Gst.ProgressType.CONTINUE):
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if doProgress:
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inProgress = True
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block = True
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elif (progressType == Gst.ProgressType.COMPLETE or
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progressType == Gst.ProgressType.CANCELLED or
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progressType == Gst.ProgressType.ERROR):
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inProgress = False
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if stateChange == Gst.StateChangeReturn.FAILURE:
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gstPrintMsg(pName, 'Cannot set to PAUSE', level=logging.INFO)
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eventLoop(pipeline, block=False, doProgress=False, targetState=Gst.State.VOID_PENDING)
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# we should always end up here because live
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elif stateChange == Gst.StateChangeReturn.NO_PREROLL:
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gstPrintMsg(pName, 'Live and does not need preroll')
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elif stateChange == Gst.StateChangeReturn.ASYNC:
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gstPrintMsg(pName, 'Prerolling')
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_gstPrintMsg(pName, 'Progress: ({}) {}', code, text, sName=msgSrcName)
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if doProgress and not inProgress and not buffering and prerolled:
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return
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elif msgType == Gst.MessageType.HAVE_CONTEXT:
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context = msg.parse_have_context()
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_gstPrintMsg(
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pName,
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'Got context: {}={}',
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context.get_context_type(),
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context.get_structure().to_string(),
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sName = msgSrcName
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)
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elif msgType == Gst.MessageType.PROPERTY_NOTIFY:
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obj, propName, val = msg.parse_property_notify()
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valStr = '(no value)'
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if val:
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if GObject.type_check_value_holds(val, GObject.TYPE_STRING):
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valStr = val.dup_string()
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elif val.g_type.is_a(Gst.Caps.__gtype__):
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valStr = val.get_boxed().to_string()
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else:
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valStr = Gst.value_serialize(val)
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_gstPrintMsg(pName, '{}: {} = {}', obj.get_name(), propName,
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valStr, sName=msgSrcName)
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# these are things I might not need...
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elif msgType == Gst.MessageType.STREAM_START:
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if msgSrc == self._pipeline:
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_gstPrintMsg(pName, 'Started stream', level=logging.INFO)
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elif msgType == Gst.MessageType.QOS:
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frmt, processed, dropped = msg.parse_qos_stats()
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jitter, proportion, quality = msg.parse_qos_values()
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_gstPrintMsg(
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pName,
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'QOS stats: jitter={} dropped={}',
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jitter,
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'-' if frmt == Gst.Format.UNDEFINED else dropped,
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sName = msgSrcName
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)
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elif msgType == Gst.MessageType.ELEMENT:
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_gstPrintMsg(pName, 'Unknown message ELEMENT', sName=msgSrcName)
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elif msgType == Gst.MessageType.UNKNOWN:
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_gstPrintMsg(pName, 'Unknown message', sName=msgSrcname)
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@async(daemon=True)
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def _mainLoop(self):
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self._eventLoop(block=True, doProgress=False, targetState=Gst.State.PLAYING)
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def _startPipeline(self, play):
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pName = self._pipeline.get_name()
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stateChange = self._pipeline.set_state(Gst.State.PAUSED)
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_gstPrintMsg(pName, 'Setting to PAUSED', level=logging.INFO)
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if stateChange == Gst.StateChangeReturn.FAILURE:
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_gstPrintMsg(pName, 'Cannot set to PAUSE', level=logging.INFO)
|
||||
self._eventLoop(block=False, doProgress=False, targetState=Gst.State.VOID_PENDING)
|
||||
# we should always end up here because live
|
||||
elif stateChange == Gst.StateChangeReturn.NO_PREROLL:
|
||||
_gstPrintMsg(pName, 'Live and does not need preroll')
|
||||
elif stateChange == Gst.StateChangeReturn.ASYNC:
|
||||
_gstPrintMsg(pName, 'Prerolling')
|
||||
try:
|
||||
_eventLoop(block=True, doProgress=True, targetState=Gst.State.PAUSED)
|
||||
except GstException:
|
||||
_gstPrintMsg(pName, 'Does not want to preroll', level=logging.ERROR)
|
||||
raise SystemExit
|
||||
elif stateChange == Gst.StateChangeReturn.SUCCESS:
|
||||
_gstPrintMsg(pName, 'Is prerolled')
|
||||
|
||||
# this should always succeed...
|
||||
try:
|
||||
eventLoop(pipeline, block=True, doProgress=True, targetState=Gst.State.PAUSED)
|
||||
self._eventLoop(block=False, doProgress=True, targetState=Gst.State.PLAYING)
|
||||
except GstException:
|
||||
gstPrintMsg(pName, 'Does not want to preroll', level=logging.ERROR)
|
||||
_gstPrintMsg(pName, 'Does not want to preroll', level=logging.ERROR)
|
||||
raise SystemExit
|
||||
elif stateChange == Gst.StateChangeReturn.SUCCESS:
|
||||
gstPrintMsg(pName, 'Is prerolled')
|
||||
# ...and end up here
|
||||
else:
|
||||
if play:
|
||||
_gstPrintMsg(pName, 'Setting to PLAYING', level=logging.INFO)
|
||||
|
||||
# this should always succeed...
|
||||
try:
|
||||
eventLoop(pipeline, block=False, doProgress=True, targetState=Gst.State.PLAYING)
|
||||
except GstException:
|
||||
gstPrintMsg(pName, 'Does not want to preroll', level=logging.ERROR)
|
||||
raise SystemExit
|
||||
# ...and end up here
|
||||
else:
|
||||
if play:
|
||||
gstPrintMsg(pName, 'Setting to PLAYING', level=logging.INFO)
|
||||
# ...and since this will ALWAYS be successful...
|
||||
if self._pipeline.set_state(Gst.State.PLAYING) == Gst.StateChangeReturn.FAILURE:
|
||||
_gstPrintMsg(pName, 'Cannot set to PLAYING', level=logging.ERROR)
|
||||
err = self._pipeline.get_bus().pop_filtered(Gst.MessageType.Error)
|
||||
_processErrorMessage(pName, msgSrcName, err)
|
||||
|
||||
# ...and since this will ALWAYS be successful...
|
||||
if pipeline.set_state(Gst.State.PLAYING) == Gst.StateChangeReturn.FAILURE:
|
||||
gstPrintMsg(pName, 'Cannot set to PLAYING', level=logging.ERROR)
|
||||
err = pipeline.get_bus().pop_filtered(Gst.MessageType.Error)
|
||||
processErrorMessage(pName, msgSrcName, err)
|
||||
# ...we end up here and loop until Tool releases their next album
|
||||
try:
|
||||
self._mainLoop()
|
||||
except:
|
||||
raise GstException
|
||||
|
||||
# ...we end up here and loop until Tool releases their next album
|
||||
try:
|
||||
mainLoop(pipeline)
|
||||
except:
|
||||
raise GstException
|
||||
class Camera(ThreadedPipeline):
|
||||
'''
|
||||
Class for usb camera. The 'video' and 'audio' flags are meant for testing.
|
||||
|
||||
def initCamera(video=True, audio=True):
|
||||
pipeline = Gst.Pipeline.new("camera")
|
||||
Makes two independent stream that share the same pipeline, and thus share a
|
||||
clock for syncronization. Video uses the hardware-accelarated OMX extensions
|
||||
for H264 encoding. Audio has no hardware accelaration (and thus is likely
|
||||
the most resource hungry thing in this program) and encodes using Opus. Both
|
||||
send their stream to two UDP ports (900X for video, 800X for audio, where
|
||||
X = 1 is used by the Janus WebRTC interface and X = 2 is used by the
|
||||
FileDump class below.
|
||||
'''
|
||||
def __init__(self, video=True, audio=True):
|
||||
super().__init__('camera')
|
||||
|
||||
vPath = '/dev/video0'
|
||||
vPath = '/dev/video0'
|
||||
|
||||
if video:
|
||||
vSource = Gst.ElementFactory.make("v4l2src", "videoSource")
|
||||
vConvert = Gst.ElementFactory.make("videoconvert", "videoConvert")
|
||||
vScale = Gst.ElementFactory.make("videoscale", "videoScale")
|
||||
vClock = Gst.ElementFactory.make("clockoverlay", "videoClock")
|
||||
vEncode = Gst.ElementFactory.make("omxh264enc", "videoEncoder")
|
||||
vRTPPay = Gst.ElementFactory.make("rtph264pay", "videoRTPPayload")
|
||||
vRTPSink = Gst.ElementFactory.make("multiudpsink", "videoRTPSink")
|
||||
if video:
|
||||
vSource = Gst.ElementFactory.make("v4l2src", "videoSource")
|
||||
vConvert = Gst.ElementFactory.make("videoconvert", "videoConvert")
|
||||
vScale = Gst.ElementFactory.make("videoscale", "videoScale")
|
||||
vClock = Gst.ElementFactory.make("clockoverlay", "videoClock")
|
||||
vEncode = Gst.ElementFactory.make("omxh264enc", "videoEncoder")
|
||||
vRTPPay = Gst.ElementFactory.make("rtph264pay", "videoRTPPayload")
|
||||
vRTPSink = Gst.ElementFactory.make("multiudpsink", "videoRTPSink")
|
||||
|
||||
vSource.set_property('device', vPath)
|
||||
vRTPPay.set_property('config-interval', 1)
|
||||
vRTPPay.set_property('pt', 96)
|
||||
vRTPSink.set_property('clients', '127.0.0.1:9001,127.0.0.1:9002')
|
||||
vSource.set_property('device', vPath)
|
||||
vRTPPay.set_property('config-interval', 1)
|
||||
vRTPPay.set_property('pt', 96)
|
||||
vRTPSink.set_property('clients', '127.0.0.1:9001,127.0.0.1:9002')
|
||||
|
||||
vCaps = Gst.Caps.from_string('video/x-raw,width=640,height=480,framerate=30/1')
|
||||
vCaps = Gst.Caps.from_string('video/x-raw,width=640,height=480,framerate=30/1')
|
||||
|
||||
pipeline.add(vSource, vConvert, vScale, vClock, vEncode, vRTPPay, vRTPSink)
|
||||
self._pipeline.add(vSource, vConvert, vScale, vClock, vEncode, vRTPPay, vRTPSink)
|
||||
|
||||
linkElements(vSource, vConvert)
|
||||
linkElements(vConvert, vScale)
|
||||
linkElements(vScale, vClock, vCaps)
|
||||
linkElements(vClock, vEncode)
|
||||
linkElements(vEncode, vRTPPay)
|
||||
linkElements(vRTPPay, vRTPSink)
|
||||
_linkElements(vSource, vConvert)
|
||||
_linkElements(vConvert, vScale)
|
||||
_linkElements(vScale, vClock, vCaps)
|
||||
_linkElements(vClock, vEncode)
|
||||
_linkElements(vEncode, vRTPPay)
|
||||
_linkElements(vRTPPay, vRTPSink)
|
||||
|
||||
if audio:
|
||||
aSource = Gst.ElementFactory.make("alsasrc", "audioSource")
|
||||
aConvert = Gst.ElementFactory.make("audioconvert", "audioConvert")
|
||||
aScale = Gst.ElementFactory.make("audioresample", "audioResample")
|
||||
aEncode = Gst.ElementFactory.make("opusenc", "audioEncode")
|
||||
aRTPPay = Gst.ElementFactory.make("rtpopuspay", "audioRTPPayload")
|
||||
aRTPSink = Gst.ElementFactory.make("multiudpsink", "audioRTPSink")
|
||||
if audio:
|
||||
aSource = Gst.ElementFactory.make("alsasrc", "audioSource")
|
||||
aConvert = Gst.ElementFactory.make("audioconvert", "audioConvert")
|
||||
aScale = Gst.ElementFactory.make("audioresample", "audioResample")
|
||||
aEncode = Gst.ElementFactory.make("opusenc", "audioEncode")
|
||||
aRTPPay = Gst.ElementFactory.make("rtpopuspay", "audioRTPPayload")
|
||||
aRTPSink = Gst.ElementFactory.make("multiudpsink", "audioRTPSink")
|
||||
|
||||
aSource.set_property('device', 'hw:1,0')
|
||||
aRTPSink.set_property('clients', '127.0.0.1:8001,127.0.0.1:8002')
|
||||
aSource.set_property('device', 'hw:1,0')
|
||||
aRTPSink.set_property('clients', '127.0.0.1:8001,127.0.0.1:8002')
|
||||
|
||||
aCaps = Gst.Caps.from_string('audio/x-raw,rate=48000,channels=1')
|
||||
aCaps = Gst.Caps.from_string('audio/x-raw,rate=48000,channels=1')
|
||||
|
||||
pipeline.add(aSource, aConvert, aScale, aEncode, aRTPPay, aRTPSink)
|
||||
self._pipeline.add(aSource, aConvert, aScale, aEncode, aRTPPay, aRTPSink)
|
||||
|
||||
linkElements(aSource, aConvert)
|
||||
linkElements(aConvert, aScale)
|
||||
linkElements(aScale, aEncode, aCaps)
|
||||
linkElements(aEncode, aRTPPay)
|
||||
linkElements(aRTPPay, aRTPSink)
|
||||
_linkElements(aSource, aConvert)
|
||||
_linkElements(aConvert, aScale)
|
||||
_linkElements(aScale, aEncode, aCaps)
|
||||
_linkElements(aEncode, aRTPPay)
|
||||
_linkElements(aRTPPay, aRTPSink)
|
||||
|
||||
waitForPath(vPath) # video is on usb, so wait until it comes back after we hard reset the bus
|
||||
waitForPath(vPath) # video is on usb, so wait until it comes back after we hard reset the bus
|
||||
|
||||
startPipeline(pipeline)
|
||||
self.start()
|
||||
|
||||
class FileDump:
|
||||
class FileDump(ThreadedPipeline):
|
||||
'''
|
||||
Pipeline that takes audio and input from two udp ports, muxes them, and
|
||||
dumps the result to a file. Intended to work with the Camera above. Will
|
||||
|
|
@ -348,7 +383,7 @@ class FileDump:
|
|||
|
||||
mkdirSafe(self._savePath, logger)
|
||||
|
||||
self.pipeline = Gst.Pipeline.new('filedump')
|
||||
super().__init__('filedump')
|
||||
|
||||
aSource = Gst.ElementFactory.make('udpsrc', 'audioSource')
|
||||
aJitBuf = Gst.ElementFactory.make('rtpjitterbuffer', 'audioJitterBuffer')
|
||||
|
|
@ -373,28 +408,27 @@ class FileDump:
|
|||
aSource.set_property('port', 8002)
|
||||
vSource.set_property('port', 9002)
|
||||
|
||||
self.pipeline.add(aSource, aJitBuf, aDepay, aQueue,
|
||||
self._pipeline.add(aSource, aJitBuf, aDepay, aQueue,
|
||||
vSource, vJitBuf, vDepay, vParse, vQueue, mux, self.sink)
|
||||
|
||||
_linkElements(aSource, aJitBuf, aCaps)
|
||||
_linkElements(aJitBuf, aDepay)
|
||||
_linkElements(aDepay, aQueue)
|
||||
_linkElements(aQueue, mux)
|
||||
|
||||
linkElements(aSource, aJitBuf, aCaps)
|
||||
linkElements(aJitBuf, aDepay)
|
||||
linkElements(aDepay, aQueue)
|
||||
linkElements(aQueue, mux)
|
||||
_linkElements(vSource, vJitBuf, vCaps)
|
||||
_linkElements(vJitBuf, vDepay)
|
||||
_linkElements(vDepay, vParse)
|
||||
_linkElements(vParse, vQueue)
|
||||
_linkElements(vQueue, mux)
|
||||
|
||||
linkElements(vSource, vJitBuf, vCaps)
|
||||
linkElements(vJitBuf, vDepay)
|
||||
linkElements(vDepay, vParse)
|
||||
linkElements(vParse, vQueue)
|
||||
linkElements(vQueue, mux)
|
||||
|
||||
linkElements(mux, self.sink)
|
||||
_linkElements(mux, self.sink)
|
||||
|
||||
# TODO: there is probably a better way to init than starting up to PAUSE
|
||||
# and then dropping back down to NULL
|
||||
startPipeline(self.pipeline, play=False)
|
||||
self.start(play=False)
|
||||
|
||||
self.pipeline.post_message(Gst.Message.new_request_state(self.pipeline, Gst.State.NULL))
|
||||
self._pipeline.post_message(Gst.Message.new_request_state(self._pipeline, Gst.State.NULL))
|
||||
|
||||
def addInitiator(self, identifier):
|
||||
with self._lock:
|
||||
|
|
@ -403,11 +437,11 @@ class FileDump:
|
|||
else:
|
||||
self._initiators.append(identifier)
|
||||
|
||||
if self.pipeline.get_state(Gst.CLOCK_TIME_NONE).state == Gst.State.NULL:
|
||||
if self._pipeline.get_state(Gst.CLOCK_TIME_NONE).state == Gst.State.NULL:
|
||||
filePath = os.path.join(self._savePath, '{}.mkv'.format(datetime.now()))
|
||||
self.sink.set_property('location', filePath)
|
||||
# TODO: cannot post messages from null to change state, is this bad?
|
||||
self.pipeline.set_state(Gst.State.PLAYING)
|
||||
self._pipeline.set_state(Gst.State.PLAYING)
|
||||
|
||||
def removeInitiator(self, identifier):
|
||||
with self._lock:
|
||||
|
|
@ -417,12 +451,6 @@ class FileDump:
|
|||
logger.warn('Attempted to remove nonexistant identifier \'%s\'', identifier)
|
||||
|
||||
if len(self._initiators) == 0:
|
||||
self.pipeline.set_state(Gst.State.NULL)
|
||||
self._pipeline.set_state(Gst.State.NULL)
|
||||
|
||||
Gst.init(None)
|
||||
|
||||
# this works for file dump
|
||||
# gst-launch-1.0 -v udpsrc port=8001 ! application/x-rtp,encoding-name=OPUS,payload=96 !
|
||||
# rtpjitterbuffer ! rtpopusdepay ! queue ! matroskamux name=mux ! filesink location=testicle.mkv \
|
||||
# udpsrc port=9001 ! application/x-rtp,encoding-name=H264,payload=96 ! rtpjitterbuffer ! \
|
||||
# rtph264depay ! h264parse ! queue ! mux.
|
||||
|
|
|
|||
Loading…
Reference in New Issue