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from PIL import Image
from PyQt5 import QtGui, QtCore, QtWidgets
from PyQt5.QtGui import QColor
import os
import math
import subprocess
import time
from component import Component
from toolkit.frame import BlankFrame, scale
from toolkit import checkOutput, rgbFromString, pickColor, connectWidget
from toolkit.ffmpeg import (
openPipe, closePipe, getAudioDuration, FfmpegVideo, exampleSound
)
class Component(Component):
name = 'Spectrum'
version = '1.0.0'
def widget(self, *args):
self.color = (255, 255, 255)
self.previewFrame = None
super().widget(*args)
self.chunkSize = 4 * self.width * self.height
self.changedOptions = True
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,
'amplitude': self.page.comboBox_amplitude,
'x': self.page.spinBox_x,
'y': self.page.spinBox_y,
'mirror': self.page.checkBox_mirror,
'scale': self.page.spinBox_scale,
'color': self.page.comboBox_color,
'compress': self.page.checkBox_compress,
'mono': self.page.checkBox_mono,
}
)
for widget in self._trackedWidgets.values():
connectWidget(widget, lambda: self.changed())
def changed(self):
self.changedOptions = True
def update(self):
count = self.page.stackedWidget.count()
i = self.page.comboBox_filterType.currentIndex()
self.page.stackedWidget.setCurrentIndex(i if i < count else count - 1)
super().update()
def previewRender(self):
changedSize = self.updateChunksize()
if not changedSize \
and not self.changedOptions \
and self.previewFrame is not None:
return self.previewFrame
frame = self.getPreviewFrame()
self.changedOptions = False
if not frame:
self.previewFrame = None
return BlankFrame(self.width, self.height)
else:
self.previewFrame = frame
return frame
def preFrameRender(self, **kwargs):
super().preFrameRender(**kwargs)
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.dataDir, 'preview_%s.log' % str(self.compPos))
with open(logFilename, 'w') as log:
log.write(" ".join(command) + '\n\n')
with open(logFilename, 'a') as log:
pipe = openPipe(
command, stdin=subprocess.DEVNULL, stdout=subprocess.PIPE,
stderr=log, bufsize=10**8
)
byteFrame = pipe.stdout.read(self.chunkSize)
closePipe(pipe)
frame = self.finalizeFrame(byteFrame)
return frame
def makeFfmpegFilter(self, preview=False, startPt=0):
w, h = scale(self.scale, self.width, self.height, str)
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'
color = self.page.comboBox_color.currentText().lower()
genericPreview = self.settings.value("pref_genericPreview")
if self.filterType == 0: # Spectrum
filter_ = (
'showspectrum=s=%sx%s:slide=scroll:win_func=%s:'
'color=%s:scale=%s' % (
self.settings.value("outputWidth"),
self.settings.value("outputHeight"),
self.page.comboBox_window.currentText(),
color, amplitude,
)
)
elif self.filterType == 1: # Histogram
filter_ = (
'ahistogram=r=%s:s=%sx%s:dmode=separate' % (
self.settings.value("outputFrameRate"),
self.settings.value("outputWidth"),
self.settings.value("outputHeight"),
)
)
elif self.filterType == 2: # Vector Scope
filter_ = (
'avectorscope=s=%sx%s:draw=line:m=polar:scale=log' % (
self.settings.value("outputWidth"),
self.settings.value("outputHeight"),
)
)
elif self.filterType == 3: # Musical Scale
filter_ = (
'showcqt=r=%s:s=%sx%s:count=30:text=0' % (
self.settings.value("outputFrameRate"),
self.settings.value("outputWidth"),
self.settings.value("outputHeight"),
)
)
elif self.filterType == 4: # Phase
filter_ = (
'aphasemeter=r=%s:s=%sx%s:mpc=white:video=1[atrash][vtmp]; '
'[atrash] anullsink; [vtmp] null' % (
self.settings.value("outputFrameRate"),
self.settings.value("outputWidth"),
self.settings.value("outputHeight"),
)
)
return [
'-filter_complex',
'%s%s%s%s%s [v1]; '
'[v1] scale=%s:%s%s [v]' % (
exampleSound() if preview and genericPreview else '[0:a] ',
'compand=gain=4,' if self.compress else '',
'aformat=channel_layouts=mono,' if self.mono else '',
filter_,
', hflip' if self.mirror else'',
w, h,
', trim=start=%s:end=%s' % (
"{0:.3f}".format(startPt + 15),
"{0:.3f}".format(startPt + 15.5)
) if preview 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):
image = Image.frombytes(
'RGBA',
scale(self.scale, self.width, self.height, int),
imageData
)
if self.scale != 100 \
or self.x != 0 or self.y != 0:
frame = BlankFrame(self.width, self.height)
frame.paste(image, box=(self.x, self.y))
else:
frame = image
return frame
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