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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 logging
from ..component import Component
from ..toolkit.frame import BlankFrame, scale
from ..toolkit import checkOutput
from ..toolkit.ffmpeg import (
openPipe, closePipe, getAudioDuration, FfmpegVideo, exampleSound
)
log = logging.getLogger('AVP.Components.Waveform')
class Component(Component):
name = 'Waveform'
version = '1.0.0'
def widget(self, *args):
super().widget(*args)
self._image = BlankFrame(self.width, self.height)
self.page.lineEdit_color.setText('255,255,255')
if hasattr(self.parent, 'window'):
self.parent.window.lineEdit_audioFile.textChanged.connect(
self.update
)
self.trackWidgets({
'color': self.page.lineEdit_color,
'mode': self.page.comboBox_mode,
'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,
'opacity': self.page.spinBox_opacity,
'compress': self.page.checkBox_compress,
'mono': self.page.checkBox_mono,
}, colorWidgets={
'color': self.page.pushButton_color,
}, relativeWidgets=[
'x', 'y',
])
def previewRender(self):
self.updateChunksize()
frame = self.getPreviewFrame(self.width, self.height)
if not frame:
return BlankFrame(self.width, self.height)
else:
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, debug=True,
)
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, width, height):
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
if startPt + 3 > duration:
startPt += startPt - 3
command = [
self.core.FFMPEG_BIN,
'-thread_queue_size', '512',
'-r', self.settings.value("outputFrameRate"),
'-ss', "{0:.3f}".format(startPt),
'-i',
self.core.junkStream
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',
])
if self.core.logEnabled:
logFilename = os.path.join(
self.core.logDir, 'preview_%s.log' % str(self.compPos))
log.debug('Creating ffmpeg log at %s', logFilename)
with open(logFilename, 'w') as logf:
logf.write(" ".join(command) + '\n\n')
with open(logFilename, 'a') as logf:
pipe = openPipe(
command, stdin=subprocess.DEVNULL, stdout=subprocess.PIPE,
stderr=logf, bufsize=10**8
)
else:
pipe = openPipe(
command, stdin=subprocess.DEVNULL, stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL, 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 = 'lin'
elif self.amplitude == 1:
amplitude = 'log'
elif self.amplitude == 2:
amplitude = 'sqrt'
elif self.amplitude == 3:
amplitude = 'cbrt'
hexcolor = QColor(*self.color).name()
opacity = "{0:.1f}".format(self.opacity / 100)
genericPreview = self.settings.value("pref_genericPreview")
if self.mode < 3:
filter_ = (
'showwaves='
'r=%s:s=%sx%s:mode=%s:colors=%s@%s:scale=%s' % (
self.settings.value("outputFrameRate"),
self.settings.value("outputWidth"),
self.settings.value("outputHeight"),
self.page.comboBox_mode.currentText().lower()
if self.mode != 3 else 'p2p',
hexcolor, opacity, amplitude,
)
)
elif self.mode > 2:
filter_ = (
'showfreqs=s=%sx%s:mode=%s:colors=%s@%s'
':ascale=%s:fscale=%s' % (
self.settings.value("outputWidth"),
self.settings.value("outputHeight"),
'line' if self.mode == 4 else 'bar',
hexcolor, opacity, amplitude,
'log' if self.mono else 'lin'
)
)
baselineHeight = int(self.height * (4 / 1080))
return [
'-filter_complex',
'%s%s%s'
'%s%s%s [v1]; '
'[v1] scale=%s:%s%s [v]' % (
exampleSound('wave', extra='')
if preview and genericPreview else '[0:a] ',
'compand=gain=4,' if self.compress else '',
'aformat=channel_layouts=mono,'
if self.mono and self.mode < 3 else '',
filter_,
', drawbox=x=(iw-w)/2:y=(ih-h)/2:w=iw:h=%s:color=%s@%s' % (
baselineHeight, hexcolor, opacity,
) if self.mode < 2 else '',
', hflip' if self.mirror else'',
w, h,
', trim=duration=%s' % "{0:.3f}".format(startPt + 3)
if preview else '',
),
'-map', '[v]',
]
def updateChunksize(self):
width, height = scale(self.scale, self.width, self.height, int)
self.chunkSize = 4 * width * height
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
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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