diff options
Diffstat (limited to 'src/components/waveform.py')
| -rw-r--r-- | src/components/waveform.py | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/src/components/waveform.py b/src/components/waveform.py new file mode 100644 index 0000000..71cbcac --- /dev/null +++ b/src/components/waveform.py @@ -0,0 +1,194 @@ +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 +from toolkit.frame import BlankFrame, scale +from toolkit import checkOutput +from toolkit.ffmpeg import ( + openPipe, closePipe, getAudioDuration, FfmpegVideo, exampleSound +) + + +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', + 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', + ]) + 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' + ) + ) + + return [ + '-filter_complex', + '%s%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 and self.mode < 3 else '', + filter_, + ', drawbox=x=(iw-w)/2:y=(ih-h)/2:w=iw:h=4:color=%s@%s' % ( + 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 |