Python PyQt5设置回放速率 从PyQt5导入QtCore、QtGui、qtwidget、qtmedia 从PyQt5.QtCore导入QByteArray 从PyQt5.QtMultimedia导入QaudioCoder 类Ui_主窗口(对象): def设置U
PyQt5设置回放速率Python PyQt5设置回放速率 从PyQt5导入QtCore、QtGui、qtwidget、qtmedia 从PyQt5.QtCore导入QByteArray 从PyQt5.QtMultimedia导入QaudioCoder 类Ui_主窗口(对象): def设置U,python,pyqt5,Python,Pyqt5,PyQt5设置回放速率 从PyQt5导入QtCore、QtGui、qtwidget、qtmedia 从PyQt5.QtCore导入QByteArray 从PyQt5.QtMultimedia导入QaudioCoder 类Ui_主窗口(对象): def设置UI(自我,主窗口): MainWindow.setObjectName(“MainWindow”) 主窗口。调整大小(246134) self.centralwidget=qtwidts.QWidget(主窗口) self.centralwid
从PyQt5导入QtCore、QtGui、qtwidget、qtmedia
从PyQt5.QtCore导入QByteArray
从PyQt5.QtMultimedia导入QaudioCoder
类Ui_主窗口(对象):
def设置UI(自我,主窗口):
MainWindow.setObjectName(“MainWindow”)
主窗口。调整大小(246134)
self.centralwidget=qtwidts.QWidget(主窗口)
self.centralwidget.setObjectName(“centralwidget”)
MainWindow.setCentralWidget(self.centralwidget)
自重传(主窗口)
QtCore.QMetaObject.connectSlotsByName(主窗口)
自启动\u mp3(主窗口)
def重新传输(自身,主窗口):
_translate=QtCore.QCoreApplication.translate
setWindowTitle(_translate(“MainWindow”、“MainWindow”))
def start_mp3(自身,主窗口):
self.output\u devices\u qt=qtmedia.QAudioDeviceInfo.availableDevices(qtmedia.QAudio.AudioOutput)
文件路径=r“C:\Users\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\n
自我解码测试声音(文件路径,主窗口)
def解码测试声音(自身、文件路径、主窗口):
self.desiredFormat=qtmedia.QAudioFormat()
self.desiredFormat.setCodec(“音频/pcm”)
self.desiredFormat.setSampleRate(44100)
self.desiredFormat.setChannelCount(1)
self.desiredFormat.setSampleSize(16)
self.desiredFormat.setByteOrder(qtmedia.QAudioFormat.LittleEndian)
self.desiredFormat.setSampleType(QtMultimedia.QAudioFormat.SignedInt)
self.m_buffer=QByteArray()
self.m_buffer_copy=QByteArray()
self.decoder=QAudioDecoder()
self.decoder.bufferReady.connect(lambda:self.readBuffer(主窗口))
self.decoder.setAudioFormat(self.desiredFormat)
self.decoder.setSourceFilename(文件路径)
self.decoder.start()
self.play\u状态=0
def读取缓冲区(自身,主窗口):
buffer=self.decoder.read()
count=缓冲区。字节计数()
如果(计数>0):
buffer_data=buffer.constData().asstring(计数)
self.m\u buffer.append(buffer\u数据)
如果(自我播放状态!=1):
自启动\u播放器(主窗口)
self.play_status=1
其他:
返回1
def timeToSize_1(自身):
返回((self.desiredFormat.channelCount()*(self.desiredFormat.sampleSize()/8)*self.desiredFormat.sampleRate())*self.m_time_to_buffer/1000)
def timeToSize_2(自身):
返回((self.desiredFormat.channelCount()*(self.desiredFormat.sampleSize()/8)*self.desiredFormat.sampleRate())*self.MAX\u BUFFERED\u TIME/1000)
def预播放(自,主窗口):
如果(自我播放状态!=0):
如果(self.m_play_called==False):
self.m_play_called=True
self.timer=QtCore.QTimer(主窗口)
self.timer.setSingleShot(真)
自拍定时器。单拍(0,lambda:self.sound_mp3(主窗口))
def sound_mp3(自身,主窗口):
如果(自我播放状态!=0):
self.m_play_called=False
如果self.m_buffer.isEmpty():
自动停止播放器(主窗口)
self.m_buffer_requested=真
返回
elif self.m_buffer.size()0):
samples=self.m_buffer.mid(0,readlen)
len=samples.size()
self.m_buffer.remove(0,len)
如果(len>0):
如果(self.m_audio_output.state()!=2):
self.m_output_device.write(示例)
其他:
返回1
如果(len!=readlen):
打破
chunks=chunks-1
def start_播放器(自身,主窗口):
self.m_play_called=False
self.m_buffer_requested=真
self.m_time_to_buffer=50
self.MAX\u缓冲时间=100
如果(self.desiredFormat.sampleRate()>=44100):
self.internal_buffer_size=(1024*10)*self.desiredFormat.channelCount()
elif(self.desiredFormat.sampleRate()>=24000):
self.internal_buffer_size=(1024*6)*self.desiredFormat.channelCount()
其他:
self.internal_buffer_size=(1024*4)*self.desiredFormat.channelCount()
#self.m\u audio\u output=qtmedia.QAudioOutput(self.output\u devices\u qt[self.output\u device\u index],self.desiredFormat)
self.m_audio_output=qtmedia.QAudioOutput(self.output_devices_qt[0],self.desiredFormat)
self.m_audio_output.setBufferSize(self.internal_buffer_size)
self.m\u size\u to\u buffer=int(self.timeToSize\u 1())
self.m_max_size_to_buffer=self.m_size_to_buffer+int(self.timeToSize_2())
self.m_output_device=self.m_audio_output.start()
self.timer_play=QtCore.QTimer(主窗口)
self.timer\u play.settimer类型(QtCore.Qt.PreciseTimer)
self.timer\u play.timeout.connect(lambda:self.preplay(主窗口))
自动定时器\播放启动(10)
def stop_播放器(自身,主窗口):
self.play\u状态=0
self.m_audio_output.stop()
self.timer\u play.stop()
如果名称=“\uuuuu main\uuuuuuuu”:
导入系统
app=qtwidts.QApplication(sys.argv)
app.addLibraryPath(r“C:/Users/Χρήστος/AppData/Local/Programs/Python/Python38/Lib/site-packages/pyqt5_-tools/Qt/plugins)
app.addLibraryPath(r“C:/Users/Χρήστος)
from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia
from PyQt5.QtCore import QByteArray
from PyQt5.QtMultimedia import QAudioDecoder
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(246, 134)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
MainWindow.setCentralWidget(self.centralwidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
self.start_mp3(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
def start_mp3(self,MainWindow):
self.output_devices_qt = QtMultimedia.QAudioDeviceInfo.availableDevices(QtMultimedia.QAudio.AudioOutput)
file_path = r"C:\Users\Χρήστος\Desktop\Papinhio player\project\disket box\mp3 files\ΑΓΙΑ ΚΥΡΙΑΚΗ.mp3"
self.decode_test_sound(file_path,MainWindow)
def decode_test_sound(self,file_path,MainWindow):
self.desiredFormat = QtMultimedia.QAudioFormat()
self.desiredFormat.setCodec("audio/pcm")
self.desiredFormat.setSampleRate(44100)
self.desiredFormat.setChannelCount(1)
self.desiredFormat.setSampleSize(16)
self.desiredFormat.setByteOrder(QtMultimedia.QAudioFormat.LittleEndian)
self.desiredFormat.setSampleType(QtMultimedia.QAudioFormat.SignedInt)
self.m_buffer = QByteArray()
self.m_buffer_copy = QByteArray()
self.decoder = QAudioDecoder()
self.decoder.bufferReady.connect(lambda:self.readBuffer(MainWindow))
self.decoder.setAudioFormat(self.desiredFormat)
self.decoder.setSourceFilename(file_path)
self.decoder.start()
self.play_status = 0
def readBuffer(self,MainWindow):
buffer = self.decoder.read()
count = buffer.byteCount()
if(count>0):
buffer_data = buffer.constData().asstring(count)
self.m_buffer.append(buffer_data)
if(self.play_status!=1):
self.start_player(MainWindow)
self.play_status = 1
else:
return 1
def timeToSize_1(self):
return ((self.desiredFormat.channelCount() * (self.desiredFormat.sampleSize() / 8) * self.desiredFormat.sampleRate()) * self.m_time_to_buffer / 1000)
def timeToSize_2(self):
return ((self.desiredFormat.channelCount() * (self.desiredFormat.sampleSize() / 8) * self.desiredFormat.sampleRate()) * self.MAX_BUFFERED_TIME / 1000)
def preplay(self,MainWindow):
if(self.play_status!=0):
if(self.m_play_called==False):
self.m_play_called = True
self.timer = QtCore.QTimer(MainWindow)
self.timer.setSingleShot(True)
self.timer.singleShot(0,lambda:self.sound_mp3(MainWindow))
def sound_mp3(self,MainWindow):
if(self.play_status!=0):
self.m_play_called = False
if self.m_buffer.isEmpty():
self.stop_player(MainWindow)
self.m_buffer_requested = True
return
elif self.m_buffer.size() < self.m_size_to_buffer:
if self.m_buffer_requested:
return
else:
self.m_buffer_requested = False
readlen = int(self.m_audio_output.periodSize())
chunks = int(self.m_audio_output.bytesFree() / readlen)
while (chunks>0):
samples = self.m_buffer.mid(0, readlen)
len = samples.size()
self.m_buffer.remove(0, len)
if (len>0):
if(self.m_audio_output.state()!=2):
self.m_output_device.write(samples)
else:
return 1
if (len != readlen):
break
chunks = chunks - 1
def start_player(self,MainWindow):
self.m_play_called = False
self.m_buffer_requested = True
self.m_time_to_buffer = 50
self.MAX_BUFFERED_TIME = 100
if (self.desiredFormat.sampleRate() >= 44100):
self.internal_buffer_size = (1024 * 10) * self.desiredFormat.channelCount()
elif (self.desiredFormat.sampleRate() >= 24000):
self.internal_buffer_size = (1024 * 6) * self.desiredFormat.channelCount()
else:
self.internal_buffer_size = (1024 * 4) * self.desiredFormat.channelCount()
#self.m_audio_output = QtMultimedia.QAudioOutput(self.output_devices_qt[self.output_device_index], self.desiredFormat)
self.m_audio_output = QtMultimedia.QAudioOutput(self.output_devices_qt[0], self.desiredFormat)
self.m_audio_output.setBufferSize(self.internal_buffer_size)
self.m_size_to_buffer = int(self.timeToSize_1())
self.m_max_size_to_buffer = self.m_size_to_buffer + int(self.timeToSize_2())
self.m_output_device = self.m_audio_output.start()
self.timer_play = QtCore.QTimer(MainWindow)
self.timer_play.setTimerType(QtCore.Qt.PreciseTimer)
self.timer_play.timeout.connect(lambda:self.preplay(MainWindow))
self.timer_play.start(10)
def stop_player(self,MainWindow):
self.play_status = 0
self.m_audio_output.stop()
self.timer_play.stop()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
app.addLibraryPath(r"C:/Users/Χρήστος/AppData/Local/Programs/Python/Python38/Lib/site-packages/pyqt5_tools/Qt/plugins")
app.addLibraryPath(r"C:/Users/Χρήστος/AppData/Local/Programs/Python/Python38/lib/site-packages/PyQt5/Qt/plugins")
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())