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"""
File:
JetPreview.py
Contents and purpose:
Plays the preview of a segment or event via the dialog box
Copyright (c) 2008 Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
from __future__ import with_statement
import wx
import threading
from JetDefs import *
from JetCtrls import *
from JetFile import *
from JetUtils import *
from eas import *
from JetStatusEvent import *
class PreviewPlayer(wx.Frame):
""" Segment player """
def __init__ (self, play_button, segment):
self.segment = segment
self.play_button = play_button
self.mute_button = None
self.trigger_button = None
self.playerLock = threading.RLock()
self.SetKeepPlayingFlag(False)
self.graph = None
def SetGraphCtrl(self, graph, parentWin):
""" Sets the graph control for the player """
self.graph = graph
self.parentWin = parentWin
def SetGraphCallbackFct(self, ClickCallbackFct):
""" Sets the callback function for the graph control to update """
self.ClickCallbackFct = ClickCallbackFct
def GraphTriggerClip(self, sClipName, iEventId):
""" Triggers a clip by clicking on it """
with self.playerLock:
try:
self.jet.TriggerClip(iEventId)
return True
except:
return False
def SetMuteFlag(self, trackNum, mute):
""" Sets a mute flag """
sync = JetDefs.DEFAULT_MUTE_SYNC
with self.playerLock:
try:
self.jet.SetMuteFlag(trackNum, mute, sync)
logging.info("SetMuteFlag() Track:%d Mute:%d Sync:%d" % (trackNum, mute, sync))
return True
except:
return False
def TriggerClip(self, eventID):
""" Triggers a clip via function """
with self.playerLock:
try:
self.jet.TriggerClip(eventID)
logging.info("TriggerClip() eventID: %d" % eventID)
return True
except:
return False
def MuteTrackViaButton(self, button, trackNum):
""" Mutes a track via a button """
with self.playerLock:
self.mute_button = button
if button.GetLabel() == JetDefs.BUT_MUTE:
if self.SetMuteFlag(trackNum, True):
button.SetLabel(JetDefs.BUT_UNMUTE)
else:
if self.SetMuteFlag(trackNum, False):
button.SetLabel(JetDefs.BUT_MUTE)
def Start(self):
""" Starts the playback. Called as a thread from dialog boxes """
self.paused = False
wx.PostEvent(self.parentWin, JetStatusEvent(JetDefs.PST_PLAY, None))
# create a temporary config file, and jet output file
FileKillClean(JetDefs.TEMP_JET_CONFIG_FILE)
self.jet_file = JetFile(JetDefs.TEMP_JET_CONFIG_FILE, "")
self.jet_file.AddSegment(self.segment.segname,
self.segment.filename,
self.segment.start,
self.segment.end,
self.segment.length,
SegmentOutputFile(self.segment.segname, JetDefs.TEMP_JET_CONFIG_FILE),
self.segment.quantize,
self.segment.jetevents,
self.segment.dlsfile,
None,
self.segment.transpose,
self.segment.repeat,
self.segment.mute_flags)
userID = 0
dls_num = -1
seg_num = 0
if len(self.segment.dlsfile) > 0:
self.jet_file.libraries.append(self.segment.dlsfile)
dls_num = 0
self.jet_file.SaveJetConfig(JetDefs.TEMP_JET_CONFIG_FILE)
self.jet_file.WriteJetFileFromConfig(JetDefs.TEMP_JET_CONFIG_FILE)
if not ValidateConfig(self.jet_file):
return
self.queueSegs = []
self.queueSegs.append(QueueSeg(self.segment.segname, userID, seg_num, dls_num, self.segment.repeat, self.segment.transpose, self.segment.mute_flags))
self.jet = JET()
self.jet.eas.StartWave()
self.jet.OpenFile(self.jet_file.config.filename)
# queue first segment and start playback
index = 0
Queue(self.jet, self.queueSegs[index])
index += 1
self.jet.Play()
self.SetKeepPlayingFlag(True)
while self.GetKeepPlayingFlag():
self.jet.Render()
status = self.jet.Status()
# if no more segments - we're done
if status.numQueuedSegments == 0:
break
self.jet.GetAppEvent()
# if less than 2 segs queued - queue another one
if (index < len(self.queueSegs)) and (status.numQueuedSegments < 2):
Queue(self.jet, self.queueSegs[index])
index += 1
wx.PostEvent(self.parentWin, JetStatusEvent(JetDefs.PST_UPD_LOCATION, status.location))
SafeJetShutdown(self.playerLock, self.jet)
FileKillClean(SegmentOutputFile(self.segment.segname, JetDefs.TEMP_JET_CONFIG_FILE))
FileKillClean(JetDefs.TEMP_JET_CONFIG_FILE)
FileKillClean(self.jet_file.config.filename)
self.SetKeepPlayingFlag(False)
wx.PostEvent(self.parentWin, JetStatusEvent(JetDefs.PST_DONE, None))
wx.PostEvent(self.parentWin, JetStatusEvent(JetDefs.PST_UPD_LOCATION, 0))
def SetKeepPlayingFlag(self, val):
""" Sets the flag to tell us wheter to keep playing """
with self.playerLock:
self.keepPlaying = val
def GetKeepPlayingFlag(self):
""" Gets the keep playing flag """
with self.playerLock:
return self.keepPlaying
def Pause(self):
""" Pauses playback """
if self.jet is None:
return
if not self.paused:
self.jet.Pause()
self.paused = True
wx.PostEvent(self.parentWin, JetStatusEvent(JetDefs.PST_PAUSE, None))
else:
self.jet.Play()
self.paused = False
wx.PostEvent(self.parentWin, JetStatusEvent(JetDefs.PST_RESUME, None))
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