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from PIL import Image
from PyQt5 import QtGui, QtCore, QtWidgets
import os
import math
import subprocess
import time
import logging
from component import Component
from toolkit.frame import BlankFrame, scale
from toolkit import checkOutput, connectWidget
from toolkit.ffmpeg import (
openPipe, closePipe, getAudioDuration, FfmpegVideo, exampleSound
)
log = logging.getLogger('AVP.Components.Spectrum')
class Component(Component):
name = 'Spectrum'
version = '1.0.1'
def widget(self, *args):
self.previewFrame = None
super().widget(*args)
self._image = BlankFrame(self.width, self.height)
self.chunkSize = 4 * self.width * self.height
self.changedOptions = True
self.previewSize = (214, 120)
self.previewPipe = None
if hasattr(self.parent, 'window'):
# update preview when audio file changes (if genericPreview is off)
self.parent.window.lineEdit_audioFile.textChanged.connect(
self.update
)
self.trackWidgets({
'filterType': self.page.comboBox_filterType,
'window': self.page.comboBox_window,
'mode': self.page.comboBox_mode,
'amplitude': self.page.comboBox_amplitude0,
'amplitude1': self.page.comboBox_amplitude1,
'amplitude2': self.page.comboBox_amplitude2,
'display': self.page.comboBox_display,
'zoom': self.page.spinBox_zoom,
'tc': self.page.spinBox_tc,
'x': self.page.spinBox_x,
'y': self.page.spinBox_y,
'mirror': self.page.checkBox_mirror,
'draw': self.page.checkBox_draw,
'scale': self.page.spinBox_scale,
'color': self.page.comboBox_color,
'compress': self.page.checkBox_compress,
'mono': self.page.checkBox_mono,
'hue': self.page.spinBox_hue,
}, relativeWidgets=[
'x', 'y',
])
for widget in self._trackedWidgets.values():
connectWidget(widget, lambda: self.changed())
def changed(self):
self.changedOptions = True
def update(self):
filterType = self.page.comboBox_filterType.currentIndex()
self.page.stackedWidget.setCurrentIndex(filterType)
if filterType == 3:
self.page.spinBox_hue.setEnabled(False)
else:
self.page.spinBox_hue.setEnabled(True)
if filterType == 2 or filterType == 4:
self.page.checkBox_mono.setEnabled(False)
else:
self.page.checkBox_mono.setEnabled(True)
super().update()
def previewRender(self):
changedSize = self.updateChunksize()
if not changedSize \
and not self.changedOptions \
and self.previewFrame is not None:
log.debug(
'Spectrum #%s is reusing old preview frame' % self.compPos)
return self.previewFrame
frame = self.getPreviewFrame()
self.changedOptions = False
if not frame:
log.warning(
'Spectrum #%s failed to create a preview frame' % self.compPos)
self.previewFrame = None
return BlankFrame(self.width, self.height)
else:
self.previewFrame = frame
return frame
def preFrameRender(self, **kwargs):
super().preFrameRender(**kwargs)
self.previewPipe.wait()
self.updateChunksize()
w, h = scale(self.scale, self.width, self.height, str)
self.video = FfmpegVideo(
inputPath=self.audioFile,
filter_=self.makeFfmpegFilter(),
width=w, height=h,
chunkSize=self.chunkSize,
frameRate=int(self.settings.value("outputFrameRate")),
parent=self.parent, component=self,
)
def frameRender(self, frameNo):
if FfmpegVideo.threadError is not None:
raise FfmpegVideo.threadError
return self.finalizeFrame(self.video.frame(frameNo))
def postFrameRender(self):
closePipe(self.video.pipe)
def getPreviewFrame(self):
genericPreview = self.settings.value("pref_genericPreview")
startPt = 0
if not genericPreview:
inputFile = self.parent.window.lineEdit_audioFile.text()
if not inputFile or not os.path.exists(inputFile):
return
duration = getAudioDuration(inputFile)
if not duration:
return
startPt = duration / 3
command = [
self.core.FFMPEG_BIN,
'-thread_queue_size', '512',
'-r', self.settings.value("outputFrameRate"),
'-ss', "{0:.3f}".format(startPt),
'-i',
os.path.join(self.core.wd, 'background.png')
if genericPreview else inputFile,
'-f', 'image2pipe',
'-pix_fmt', 'rgba',
]
command.extend(self.makeFfmpegFilter(preview=True, startPt=startPt))
command.extend([
'-an',
'-s:v', '%sx%s' % scale(self.scale, self.width, self.height, str),
'-codec:v', 'rawvideo', '-',
'-frames:v', '1',
])
logFilename = os.path.join(
self.core.logDir, 'preview_%s.log' % str(self.compPos))
log.debug('Creating ffmpeg process (log at %s)' % logFilename)
with open(logFilename, 'w') as logf:
logf.write(" ".join(command) + '\n\n')
with open(logFilename, 'a') as logf:
self.previewPipe = openPipe(
command, stdin=subprocess.DEVNULL, stdout=subprocess.PIPE,
stderr=logf, bufsize=10**8
)
byteFrame = self.previewPipe.stdout.read(self.chunkSize)
closePipe(self.previewPipe)
frame = self.finalizeFrame(byteFrame)
return frame
def makeFfmpegFilter(self, preview=False, startPt=0):
if preview:
w, h = self.previewSize
else:
w, h = (self.width, self.height)
color = self.page.comboBox_color.currentText().lower()
genericPreview = self.settings.value("pref_genericPreview")
if self.filterType == 0: # Spectrum
if self.amplitude == 0:
amplitude = 'sqrt'
elif self.amplitude == 1:
amplitude = 'cbrt'
elif self.amplitude == 2:
amplitude = '4thrt'
elif self.amplitude == 3:
amplitude = '5thrt'
elif self.amplitude == 4:
amplitude = 'lin'
elif self.amplitude == 5:
amplitude = 'log'
filter_ = (
'showspectrum=s=%sx%s:slide=scroll:win_func=%s:'
'color=%s:scale=%s,'
'colorkey=color=black:similarity=0.1:blend=0.5' % (
w, h,
self.page.comboBox_window.currentText(),
color, amplitude,
)
)
elif self.filterType == 1: # Histogram
if self.amplitude1 == 0:
amplitude = 'log'
elif self.amplitude1 == 1:
amplitude = 'lin'
if self.display == 0:
display = 'log'
elif self.display == 1:
display = 'sqrt'
elif self.display == 2:
display = 'cbrt'
elif self.display == 3:
display = 'lin'
elif self.display == 4:
display = 'rlog'
filter_ = (
'ahistogram=r=%s:s=%sx%s:dmode=separate:ascale=%s:scale=%s' % (
self.settings.value("outputFrameRate"),
w, h,
amplitude, display
)
)
elif self.filterType == 2: # Vector Scope
if self.amplitude2 == 0:
amplitude = 'log'
elif self.amplitude2 == 1:
amplitude = 'sqrt'
elif self.amplitude2 == 2:
amplitude = 'cbrt'
elif self.amplitude2 == 3:
amplitude = 'lin'
m = self.page.comboBox_mode.currentText()
filter_ = (
'avectorscope=s=%sx%s:draw=%s:m=%s:scale=%s:zoom=%s' % (
w, h,
'line'if self.draw else 'dot',
m, amplitude, str(self.zoom),
)
)
elif self.filterType == 3: # Musical Scale
filter_ = (
'showcqt=r=%s:s=%sx%s:count=30:text=0:tc=%s,'
'colorkey=color=black:similarity=0.1:blend=0.5 ' % (
self.settings.value("outputFrameRate"),
w, h,
str(self.tc),
)
)
elif self.filterType == 4: # Phase
filter_ = (
'aphasemeter=r=%s:s=%sx%s:video=1 [atrash][vtmp1]; '
'[atrash] anullsink; '
'[vtmp1] colorkey=color=black:similarity=0.1:blend=0.5, '
'crop=in_w/8:in_h:(in_w/8)*7:0 ' % (
self.settings.value("outputFrameRate"),
w, h,
)
)
if self.filterType < 2:
exampleSnd = exampleSound('freq')
elif self.filterType == 2 or self.filterType == 4:
exampleSnd = exampleSound('stereo')
elif self.filterType == 3:
exampleSnd = exampleSound('white')
return [
'-filter_complex',
'%s%s%s%s [v1]; '
'[v1] %s%s%s%s%s [v]' % (
exampleSnd if preview and genericPreview else '[0:a] ',
'compand=gain=4,' if self.compress else '',
'aformat=channel_layouts=mono,'
if self.mono and self.filterType not in (2, 4) else '',
filter_,
'hflip, ' if self.mirror else '',
'trim=start=%s:end=%s, ' % (
"{0:.3f}".format(startPt + 12),
"{0:.3f}".format(startPt + 12.5)
) if preview else '',
'scale=%sx%s' % scale(
self.scale, self.width, self.height, str),
', hue=h=%s:s=10' % str(self.hue)
if self.hue > 0 and self.filterType != 3 else '',
', convolution=-2 -1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2:-2 '
'-1 0 -1 1 1 0 1 2:-2 -1 0 -1 1 1 0 1 2'
if self.filterType == 3 else ''
),
'-map', '[v]',
]
def updateChunksize(self):
width, height = scale(self.scale, self.width, self.height, int)
oldChunkSize = int(self.chunkSize)
self.chunkSize = 4 * width * height
changed = self.chunkSize != oldChunkSize
return changed
def finalizeFrame(self, imageData):
try:
image = Image.frombytes(
'RGBA',
scale(self.scale, self.width, self.height, int),
imageData
)
self._image = image
except ValueError:
image = self._image
frame = BlankFrame(self.width, self.height)
frame.paste(image, box=(self.x, self.y))
return frame
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