477 lines
17 KiB
Python
477 lines
17 KiB
Python
'''
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Home to the Core class which tracks program state. Used by GUI & commandline
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'''
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from PyQt5 import QtCore, QtGui, uic
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import sys
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import os
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import json
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from importlib import import_module
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import toolkit
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from toolkit.ffmpeg import findFfmpeg
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import video_thread
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class Core:
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'''
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MainWindow and Command module both use an instance of this class
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to store the main program state. This object tracks the components
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as an instance, has methods for managing the components and for
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opening/creating project files and presets.
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'''
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@classmethod
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def storeSettings(cls):
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'''
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Stores settings/paths to directories as class variables
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'''
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if getattr(sys, 'frozen', False):
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# frozen
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wd = os.path.dirname(sys.executable)
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else:
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wd = os.path.dirname(os.path.realpath(__file__))
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dataDir = QtCore.QStandardPaths.writableLocation(
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QtCore.QStandardPaths.AppConfigLocation
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)
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with open(os.path.join(wd, 'encoder-options.json')) as json_file:
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encoderOptions = json.load(json_file)
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settings = {
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'wd': wd,
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'dataDir': dataDir,
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'settings': QtCore.QSettings(
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os.path.join(dataDir, 'settings.ini'),
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QtCore.QSettings.IniFormat),
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'presetDir': os.path.join(dataDir, 'presets'),
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'componentsPath': os.path.join(wd, 'components'),
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'encoderOptions': encoderOptions,
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'FFMPEG_BIN': findFfmpeg(),
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'canceled': False,
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}
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settings['videoFormats'] = toolkit.appendUppercase([
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'*.mp4',
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'*.mov',
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'*.mkv',
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'*.avi',
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'*.webm',
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'*.flv',
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])
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settings['audioFormats'] = toolkit.appendUppercase([
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'*.mp3',
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'*.wav',
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'*.ogg',
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'*.fla',
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'*.flac',
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'*.aac',
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])
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settings['imageFormats'] = toolkit.appendUppercase([
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'*.png',
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'*.jpg',
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'*.tif',
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'*.tiff',
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'*.gif',
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'*.bmp',
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'*.ico',
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'*.xbm',
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'*.xpm',
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])
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# Register all settings as class variables
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for classvar, val in settings.items():
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setattr(cls, classvar, val)
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# Make settings accessible to the toolkit package
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toolkit.init(settings)
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def __init__(self):
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Core.storeSettings()
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self.findComponents()
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self.selectedComponents = []
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self.savedPresets = {} # copies of presets to detect modification
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def findComponents(self):
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def findComponents():
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for f in sorted(os.listdir(Core.componentsPath)):
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name, ext = os.path.splitext(f)
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if name.startswith("__"):
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continue
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elif ext == '.py':
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yield name
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self.modules = [
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import_module('components.%s' % name)
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for name in findComponents()
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]
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# store canonical module names and indexes
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self.moduleIndexes = [i for i in range(len(self.modules))]
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self.compNames = [mod.Component.name for mod in self.modules]
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self.altCompNames = []
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# store alternative names for modules
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for i, mod in enumerate(self.modules):
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if hasattr(mod.Component, 'names'):
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for name in mod.Component.names():
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self.altCompNames.append((name, i))
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def componentListChanged(self):
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for i, component in enumerate(self.selectedComponents):
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component.compPos = i
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def insertComponent(self, compPos, moduleIndex, loader):
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'''Creates a new component'''
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if compPos < 0 or compPos > len(self.selectedComponents):
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compPos = len(self.selectedComponents)
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if len(self.selectedComponents) > 50:
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return None
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component = self.modules[moduleIndex].Component(
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moduleIndex, compPos
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)
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self.selectedComponents.insert(
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compPos,
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component
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)
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self.componentListChanged()
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# init component's widget for loading/saving presets
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self.selectedComponents[compPos].widget(loader)
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self.updateComponent(compPos)
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if hasattr(loader, 'insertComponent'):
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loader.insertComponent(compPos)
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return compPos
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def moveComponent(self, startI, endI):
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comp = self.selectedComponents.pop(startI)
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self.selectedComponents.insert(endI, comp)
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self.componentListChanged()
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return endI
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def removeComponent(self, i):
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self.selectedComponents.pop(i)
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self.componentListChanged()
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def clearComponents(self):
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self.selectedComponents = list()
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self.componentListChanged()
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def updateComponent(self, i):
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# print('updating %s' % self.selectedComponents[i])
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self.selectedComponents[i].update()
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def moduleIndexFor(self, compName):
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try:
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index = self.compNames.index(compName)
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return self.moduleIndexes[index]
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except ValueError:
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for altName, modI in self.altCompNames:
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if altName == compName:
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return self.moduleIndexes[modI]
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def clearPreset(self, compIndex):
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self.selectedComponents[compIndex].currentPreset = None
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def openPreset(self, filepath, compIndex, presetName):
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'''Applies a preset to a specific component'''
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saveValueStore = self.getPreset(filepath)
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if not saveValueStore:
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return False
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try:
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self.selectedComponents[compIndex].loadPreset(
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saveValueStore,
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presetName
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)
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except KeyError as e:
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print('preset missing value: %s' % e)
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self.savedPresets[presetName] = dict(saveValueStore)
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return True
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def getPreset(self, filepath):
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'''Returns the preset dict stored at this filepath'''
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if not os.path.exists(filepath):
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return False
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with open(filepath, 'r') as f:
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for line in f:
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saveValueStore = toolkit.presetFromString(line.strip())
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break
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return saveValueStore
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def openProject(self, loader, filepath):
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''' loader is the object calling this method which must have
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its own showMessage(**kwargs) method for displaying errors.
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'''
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if not os.path.exists(filepath):
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loader.showMessage(msg='Project file not found.')
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return
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errcode, data = self.parseAvFile(filepath)
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if errcode == 0:
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try:
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if hasattr(loader, 'window'):
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for widget, value in data['WindowFields']:
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widget = eval('loader.window.%s' % widget)
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widget.blockSignals(True)
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widget.setText(value)
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widget.blockSignals(False)
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for key, value in data['Settings']:
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Core.settings.setValue(key, value)
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for tup in data['Components']:
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name, vers, preset = tup
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clearThis = False
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modified = False
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# add loaded named presets to savedPresets dict
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if 'preset' in preset and preset['preset'] is not None:
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nam = preset['preset']
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filepath2 = os.path.join(
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Core.presetDir, name, str(vers), nam)
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origSaveValueStore = self.getPreset(filepath2)
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if origSaveValueStore:
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self.savedPresets[nam] = dict(origSaveValueStore)
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modified = not origSaveValueStore == preset
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else:
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# saved preset was renamed or deleted
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clearThis = True
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# create the actual component object & get its index
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i = self.insertComponent(
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-1,
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self.moduleIndexFor(name),
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loader)
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if i is None:
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loader.showMessage(msg="Too many components!")
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break
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try:
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if 'preset' in preset and preset['preset'] is not None:
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self.selectedComponents[i].loadPreset(
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preset
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)
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else:
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self.selectedComponents[i].loadPreset(
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preset,
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preset['preset']
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)
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except KeyError as e:
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print('%s missing value: %s' % (
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self.selectedComponents[i], e)
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)
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if clearThis:
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self.clearPreset(i)
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if hasattr(loader, 'updateComponentTitle'):
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loader.updateComponentTitle(i, modified)
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except:
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errcode = 1
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data = sys.exc_info()
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if errcode == 1:
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typ, value, tb = data
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if typ.__name__ == 'KeyError':
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# probably just an old version, still loadable
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print('file missing value: %s' % value)
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return
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if hasattr(loader, 'createNewProject'):
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loader.createNewProject(prompt=False)
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import traceback
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msg = '%s: %s\n\nTraceback:\n' % (typ.__name__, value)
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msg += "\n".join(traceback.format_tb(tb))
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loader.showMessage(
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msg="Project file '%s' is corrupted." % filepath,
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showCancel=False,
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icon='Warning',
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detail=msg)
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def parseAvFile(self, filepath):
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'''Parses an avp (project) or avl (preset package) file.
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Returns dictionary with section names as the keys, each one
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contains a list of tuples: (compName, version, compPresetDict)
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'''
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validSections = (
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'Components',
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'Settings',
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'WindowFields'
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)
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data = {sect: [] for sect in validSections}
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try:
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with open(filepath, 'r') as f:
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def parseLine(line):
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'''Decides if a file line is a section header'''
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line = line.strip()
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newSection = ''
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if line.startswith('[') and line.endswith(']') \
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and line[1:-1] in validSections:
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newSection = line[1:-1]
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return line, newSection
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section = ''
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i = 0
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for line in f:
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line, newSection = parseLine(line)
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if newSection:
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section = str(newSection)
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continue
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if line and section == 'Components':
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if i == 0:
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lastCompName = str(line)
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i += 1
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elif i == 1:
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lastCompVers = str(line)
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i += 1
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elif i == 2:
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lastCompPreset = toolkit.presetFromString(line)
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data[section].append((
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lastCompName,
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lastCompVers,
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lastCompPreset
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))
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i = 0
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elif line and section:
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key, value = line.split('=', 1)
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data[section].append((key, value.strip()))
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return 0, data
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except:
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return 1, sys.exc_info()
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def importPreset(self, filepath):
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errcode, data = self.parseAvFile(filepath)
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returnList = []
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if errcode == 0:
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name, vers, preset = data['Components'][0]
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presetName = preset['preset'] \
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if preset['preset'] else os.path.basename(filepath)[:-4]
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newPath = os.path.join(
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Core.presetDir,
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name,
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vers,
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presetName
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)
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if os.path.exists(newPath):
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return False, newPath
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preset['preset'] = presetName
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self.createPresetFile(
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name, vers, presetName, preset
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)
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return True, presetName
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elif errcode == 1:
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# TODO: an error message
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return False, ''
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def exportPreset(self, exportPath, compName, vers, origName):
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internalPath = os.path.join(
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Core.presetDir, compName, str(vers), origName
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)
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if not os.path.exists(internalPath):
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return
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if os.path.exists(exportPath):
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os.remove(exportPath)
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with open(internalPath, 'r') as f:
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internalData = [line for line in f]
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try:
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saveValueStore = toolkit.presetFromString(internalData[0].strip())
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self.createPresetFile(
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compName, vers,
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origName, saveValueStore,
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exportPath
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)
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return True
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except:
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return False
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def createPresetFile(
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self, compName, vers, presetName, saveValueStore, filepath=''):
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'''Create a preset file (.avl) at filepath using args.
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Or if filepath is empty, create an internal preset using args'''
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if not filepath:
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dirname = os.path.join(Core.presetDir, compName, str(vers))
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if not os.path.exists(dirname):
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os.makedirs(dirname)
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filepath = os.path.join(dirname, presetName)
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internal = True
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else:
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if not filepath.endswith('.avl'):
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filepath += '.avl'
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internal = False
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with open(filepath, 'w') as f:
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if not internal:
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f.write('[Components]\n')
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f.write('%s\n' % compName)
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f.write('%s\n' % str(vers))
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f.write(toolkit.presetToString(saveValueStore))
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def createProjectFile(self, filepath, window=None):
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'''Create a project file (.avp) using the current program state'''
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settingsKeys = [
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'componentDir',
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'inputDir',
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'outputDir',
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'presetDir',
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'projectDir',
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]
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try:
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if not filepath.endswith(".avp"):
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filepath += '.avp'
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if os.path.exists(filepath):
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os.remove(filepath)
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with open(filepath, 'w') as f:
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print('creating %s' % filepath)
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f.write('[Components]\n')
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for comp in self.selectedComponents:
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saveValueStore = comp.savePreset()
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saveValueStore['preset'] = comp.currentPreset
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f.write('%s\n' % str(comp))
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f.write('%s\n' % str(comp.version))
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f.write('%s\n' % toolkit.presetToString(saveValueStore))
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f.write('\n[Settings]\n')
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for key in Core.settings.allKeys():
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if key in settingsKeys:
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f.write('%s=%s\n' % (key, Core.settings.value(key)))
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if window:
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f.write('\n[WindowFields]\n')
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f.write(
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'lineEdit_audioFile=%s\n'
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'lineEdit_outputFile=%s\n' % (
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window.lineEdit_audioFile.text(),
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window.lineEdit_outputFile.text()
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)
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)
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return True
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except:
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return False
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def newVideoWorker(self, loader, audioFile, outputPath):
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'''loader is MainWindow or Command object which must own the thread'''
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self.videoThread = QtCore.QThread(loader)
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videoWorker = video_thread.Worker(
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loader, audioFile, outputPath, self.selectedComponents
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)
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videoWorker.moveToThread(self.videoThread)
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videoWorker.videoCreated.connect(self.videoCreated)
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self.videoThread.start()
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return videoWorker
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def videoCreated(self):
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self.videoThread.quit()
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self.videoThread.wait()
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def cancel(self):
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Core.canceled = True
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toolkit.cancel()
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def reset(self):
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Core.canceled = False
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toolkit.reset()
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