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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
from component import Component, ComponentError
from toolkit.frame import BlankFrame
from toolkit import openPipe, checkOutput, rgbFromString
from toolkit.ffmpeg import FfmpegVideo
class Component(Component):
name = 'Waveform'
version = '1.0.0'
def widget(self, *args):
self.color = (255, 255, 255)
super().widget(*args)
self.page.lineEdit_color.setText('%s,%s,%s' % self.color)
btnStyle = "QPushButton { background-color : %s; outline: none; }" \
% QColor(*self.color1).name()
self.page.lineEdit_color.setStylesheet(btnStyle)
self.page.pushButton_color.clicked.connect(lambda: self.pickColor())
self.trackWidgets(
{
'mode': self.page.comboBox_mode,
'x': self.page.spinBox_x,
'y': self.page.spinBox_y,
'mirror': self.page.checkBox_mirror,
'scale': self.page.spinBox_scale,
}
)
def update(self):
self.color = rgbFromString(self.page.lineEdit_color.text())
btnStyle = "QPushButton { background-color : %s; outline: none; }" \
% QColor(*self.color).name()
self.page.pushButton_color.setStyleSheet(btnStyle)
super().update()
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()
self.video = FfmpegVideo(
inputPath=self.audioFile,
filter_=makeFfmpegFilter(),
width=self.width, height=self.height,
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 finalizeFrame(self.video.frame(frameNo))
def postFrameRender(self):
closePipe(self.video.pipe)
def getPreviewFrame(self, width, height):
inputFile = self.parent.window.lineEdit_audioFile.text()
if not inputFile or not os.path.exists(inputFile):
return
command = [
self.core.FFMPEG_BIN,
'-thread_queue_size', '512',
'-i', inputFile,
'-f', 'image2pipe',
'-pix_fmt', 'rgba',
]
command.extend(self.makeFfmpegFilter())
command.extend([
'-vcodec', 'rawvideo', '-',
'-ss', '90',
'-frames:v', '1',
])
pipe = openPipe(
command, stdin=subprocess.DEVNULL, stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL, bufsize=10**8
)
byteFrame = pipe.stdout.read(self.chunkSize)
closePipe(pipe)
frame = finalizeFrame(self, byteFrame, width, height)
return frame
def makeFfmpegFilter(self):
w, h = scale(self.scale, self.width, self.height, str)
return [
'-filter_complex',
'[0:a] showwaves=s=%sx%s:mode=%s,format=rgba [v]' % (
w, h, self.mode,
),
'-map', '[v]',
'-map', '0:a',
]
def updateChunksize(self):
if self.scale != 100:
width, height = scale(self.scale, self.width, self.height, int)
else:
width, height = self.width, self.height
self.chunkSize = 4 * width * height
def scale(scale, width, height, returntype=None):
width = (float(width) / 100.0) * float(scale)
height = (float(height) / 100.0) * float(scale)
if returntype == str:
return (str(math.ceil(width)), str(math.ceil(height)))
elif returntype == int:
return (math.ceil(width), math.ceil(height))
else:
return (width, height)
def finalizeFrame(self, imageData, width, height):
# frombytes goes here
if self.scale != 100 \
or self.x != 0 or self.y != 0:
frame = BlankFrame(width, height)
frame.paste(image, box=(self.x, self.y))
else:
frame = image
return frame
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