477 lines
16 KiB
Python
477 lines
16 KiB
Python
import sys
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import io
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import os
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from PyQt4 import QtCore, QtGui, uic
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from os.path import expanduser
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import subprocess as sp
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import numpy
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from PIL import Image
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from shutil import rmtree
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import time
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from collections import OrderedDict
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import json
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from importlib import import_module
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from PyQt4.QtGui import QDesktopServices
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import string
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class Core():
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def __init__(self):
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self.FFMPEG_BIN = self.findFfmpeg()
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self.dataDir = QDesktopServices.storageLocation(
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QDesktopServices.DataLocation)
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self.presetDir = os.path.join(self.dataDir, 'presets')
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if getattr(sys, 'frozen', False):
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# frozen
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self.wd = os.path.dirname(sys.executable)
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else:
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# unfrozen
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self.wd = os.path.dirname(os.path.realpath(__file__))
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self.loadEncoderOptions()
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self.videoFormats = Core.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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self.audioFormats = Core.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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self.imageFormats = Core.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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self.findComponents()
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self.selectedComponents = []
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# copies of named presets to detect modification
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self.savedPresets = {}
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def findComponents(self):
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def findComponents():
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srcPath = os.path.join(self.wd, 'components')
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if os.path.exists(srcPath):
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for f in sorted(os.listdir(srcPath)):
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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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self.moduleIndexes = [i for i in range(len(self.modules))]
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self.compNames = [mod.Component.__doc__ for mod in self.modules]
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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, self)
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self.selectedComponents.insert(
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compPos,
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component)
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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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index = self.compNames.index(compName)
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return self.moduleIndexes[index]
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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 getPresetDir(self, comp):
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return os.path.join(
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self.presetDir, str(comp), str(comp.version()))
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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 = Core.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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for i, tup in enumerate(data['Components']):
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name, vers, preset = tup
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clearThis = False
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# add loaded named presets to savedPresets dict
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if 'preset' in preset and preset['preset'] != None:
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nam = preset['preset']
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filepath2 = os.path.join(
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self.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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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 == 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'] != 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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if clearThis:
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self.clearPreset(i)
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if hasattr(loader, 'updateComponentTitle'):
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loader.updateComponentTitle(i)
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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, _ = 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()
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msg = '%s: %s' % (typ.__name__, value)
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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=QtGui.QMessageBox.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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data = {}
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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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validSections = ('Components')
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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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data[section] = []
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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 = Core.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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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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self.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(self.presetDir, compName, str(vers), origName)
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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 = Core.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(self.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(Core.presetToString(saveValueStore))
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def createProjectFile(self, filepath):
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'''Create a project file (.avp) using the current program state'''
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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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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' % Core.presetToString(saveValueStore))
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return True
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except:
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return False
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def loadEncoderOptions(self):
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file_path = os.path.join(self.wd, 'encoder-options.json')
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with open(file_path) as json_file:
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self.encoder_options = json.load(json_file)
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def findFfmpeg(self):
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if sys.platform == "win32":
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return "ffmpeg.exe"
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else:
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try:
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with open(os.devnull, "w") as f:
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sp.check_call(['ffmpeg', '-version'], stdout=f, stderr=f)
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return "ffmpeg"
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except:
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return "avconv"
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def readAudioFile(self, filename, parent):
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command = [self.FFMPEG_BIN, '-i', filename]
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try:
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fileInfo = sp.check_output(command, stderr=sp.STDOUT, shell=False)
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except sp.CalledProcessError as ex:
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fileInfo = ex.output
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pass
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info = fileInfo.decode("utf-8").split('\n')
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for line in info:
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if 'Duration' in line:
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d = line.split(',')[0]
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d = d.split(' ')[3]
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d = d.split(':')
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duration = float(d[0])*3600 + float(d[1])*60 + float(d[2])
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command = [
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self.FFMPEG_BIN,
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'-i', filename,
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'-f', 's16le',
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'-acodec', 'pcm_s16le',
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'-ar', '44100', # ouput will have 44100 Hz
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'-ac', '1', # mono (set to '2' for stereo)
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'-']
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in_pipe = sp.Popen(
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command, stdout=sp.PIPE, stderr=sp.DEVNULL, bufsize=10**8)
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completeAudioArray = numpy.empty(0, dtype="int16")
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progress = 0
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lastPercent = None
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while True:
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if self.canceled:
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break
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# read 2 seconds of audio
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progress = progress + 4
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raw_audio = in_pipe.stdout.read(88200*4)
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if len(raw_audio) == 0:
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break
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audio_array = numpy.fromstring(raw_audio, dtype="int16")
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completeAudioArray = numpy.append(completeAudioArray, audio_array)
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percent = int(100*(progress/duration))
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if percent >= 100:
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percent = 100
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if lastPercent != percent:
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string = 'Loading audio file: '+str(percent)+'%'
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parent.progressBarSetText.emit(string)
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parent.progressBarUpdate.emit(percent)
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lastPercent = percent
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in_pipe.kill()
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in_pipe.wait()
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# add 0s the end
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completeAudioArrayCopy = numpy.zeros(
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len(completeAudioArray) + 44100, dtype="int16")
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completeAudioArrayCopy[:len(completeAudioArray)] = completeAudioArray
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completeAudioArray = completeAudioArrayCopy
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return completeAudioArray
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def cancel(self):
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self.canceled = True
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def reset(self):
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self.canceled = False
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@staticmethod
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def badName(name):
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'''Returns whether a name contains non-alphanumeric chars'''
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return any([letter in string.punctuation for letter in name])
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@staticmethod
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def presetToString(dictionary):
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'''Alphabetizes a dict into OrderedDict & returns string repr'''
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return repr(OrderedDict(sorted(dictionary.items(), key=lambda t: t[0])))
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@staticmethod
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def presetFromString(string):
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'''Turns a string repr of OrderedDict into a regular dict'''
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return dict(eval(string))
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@staticmethod
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def appendUppercase(lst):
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for form, i in zip(lst, range(len(lst))):
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lst.append(form.upper())
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return lst
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