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Working with audio multimedia in pyqt5
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I am trying to make a mp3 player for e-radio.
I want to manage audio stream in real-time (volume,speed,time position).
For the microphone, i have found/make this:
import data from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia class MicrophoneDeck(): def __init__(self,ui,MainWindow): self.microphone_on = False ui.speakers_deck_open_or_close_microphone.setText("Click to talk - Now off") self.default_primary_output_device = data.read_setting("primary output device")[0]["current value"] self.default_input_device = data.read_setting("input device")[0]["current value"] self.input_devices_qt = QtMultimedia.QAudioDeviceInfo.availableDevices(QtMultimedia.QAudio.AudioInput) self.output_devices_qt = QtMultimedia.QAudioDeviceInfo.availableDevices(QtMultimedia.QAudio.AudioOutput) self.input_device_index = 0 self.output_device_index = 0 counter = 0 for input_device in self.input_devices_qt: if(input_device.deviceName()==self.default_input_device): self.input_device_index = counter break counter = counter+1 counter = 0 for output_device in self.output_devices_qt: if(output_device.deviceName()==self.default_primary_output_device): self.output_device_index = counter break counter = counter+1 self.play_from_microphone(ui,MainWindow) #self.start_player(ui,MainWindow) ui.speakers_deck_open_or_close_microphone.clicked.connect(lambda state:self.change_microphone_status(ui,MainWindow)) ui.speakers_deck_click_to_talk.pressed.connect(lambda:self.microphone_pressed(ui,MainWindow)) ui.speakers_deck_click_to_talk.released.connect(lambda:self.microphone_released(ui,MainWindow)) ui.speakes_deck_volume_control.valueChanged.connect(lambda volume:self.microphone_volume_changed(volume,ui,MainWindow)) self.microphone_volume_changed(100,ui,MainWindow) def microphone_volume_changed(self,volume,ui,MainWindow): vol = volume/100 self.m_audio_input.setVolume(vol) vol_text = round(vol,1) ui.speakers_deck_volume_label.setText(str(vol_text)+"/1.0") def microphone_pressed(self,ui,MainWindow): if self.microphone_on==False: self.microphone_on = True ui.speakers_deck_open_or_close_microphone.setText("Click to talk - Now On") self.start_player(ui,MainWindow) ui.speakers_deck_open_or_close_microphone.setEnabled(False) def microphone_released(self,ui,MainWindow): self.microphone_on = False ui.speakers_deck_open_or_close_microphone.setText("Click to talk - Now off") self.stop_player(ui,MainWindow) ui.speakers_deck_open_or_close_microphone.setEnabled(True) def change_microphone_status(self,ui,MainWindow): if self.microphone_on: self.microphone_on = False ui.speakers_deck_open_or_close_microphone.setText("Click to talk - Now off") self.stop_player(ui,MainWindow) ui.speakers_deck_click_to_talk.setEnabled(True) else: self.microphone_on = True ui.speakers_deck_open_or_close_microphone.setText("Click to talk - Now On") self.start_player(ui,MainWindow) ui.speakers_deck_click_to_talk.setEnabled(False) def play_from_microphone(self,ui,MainWindow): self.buffer_min_value = 0 self.buffer_max_value = 0 self.mid_strength = 0 self.min_value = -25 self.max_value = 25 self.m_play_called = False self.m_buffer = QtCore.QByteArray() self.m_buffer_requested = True #self.m_time_to_buffer = 1000 #self.MAX_BUFFERED_TIME = 1000 self.m_time_to_buffer = 50 self.MAX_BUFFERED_TIME = 100 self.m_input_device_info = QtMultimedia.QAudioDeviceInfo.defaultInputDevice() self.m_output_device_info = QtMultimedia.QAudioDeviceInfo.defaultOutputDevice() self.format = QtMultimedia.QAudioFormat() self.format.setCodec("audio/pcm") self.format.setSampleRate(44100) self.format.setChannelCount(1) self.format.setSampleSize(16) self.format.setByteOrder(QtMultimedia.QAudioFormat.LittleEndian) self.format.setSampleType(QtMultimedia.QAudioFormat.SignedInt) self.m_audio_input = QtMultimedia.QAudioInput(self.input_devices_qt[int(self.input_device_index)],self.format) #self.m_input_device = self.m_audio_input.start() #self.m_audio_input.resume() self.m_audio_input.setNotifyInterval(100) self.m_audio_input.notify.connect(lambda: self.send_input_to_buffer(MainWindow,ui)) if (self.format.sampleRate() >= 44100): self.internal_buffer_size = (1024 * 10) * self.format.channelCount() elif (self.format.sampleRate() >= 24000): self.internal_buffer_size = (1024 * 6) * self.format.channelCount() else: self.internal_buffer_size = (1024 * 4) * self.format.channelCount() self.m_audio_output = QtMultimedia.QAudioOutput(self.output_devices_qt[self.output_device_index], self.format) #self.m_audio_output = QtMultimedia.QAudioOutput(self.output_devices_qt[0], self.format) 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) self.timer_verifier = QtCore.QTimer(MainWindow) self.timer_verifier.timeout.connect(self.verifier) self.timer_verifier.start(max(self.m_time_to_buffer, 10)) #ui.stop_push_button.setEnabled(True) def verifier(self): if (self.m_buffer.size() >= self.m_max_size_to_buffer): self.m_buffer.clear() def timeToSize_1(self): return ((self.format.channelCount() * (self.format.sampleSize() / 8) * self.format.sampleRate()) * self.m_time_to_buffer / 1000) def timeToSize_2(self): return ((self.format.channelCount() * (self.format.sampleSize() / 8) * self.format.sampleRate()) * self.MAX_BUFFERED_TIME / 1000) def send_input_to_buffer(self,MainWindow,ui): bytes_ready = self.m_audio_input.bytesReady() if(type(bytes_ready) == int and bytes_ready>0): data = self.m_input_device.readAll() self.m_buffer.append(data) #self.plot_buffer.append(data) #self.calculate_mid_strength(ui) self.preplay(MainWindow) def preplay(self,MainWindow): if(self.m_play_called==False): self.m_play_called = True self.timer = QtCore.QTimer(MainWindow) self.timer.setSingleShot(True) self.timer.singleShot(0, self.sound_microphone) def sound_microphone(self): self.m_play_called = False if self.m_buffer.isEmpty(): 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 stop_player(self,ui,MainWindow): self.m_audio_input.stop() self.m_audio_output.stop() def start_player(self,ui,MainWindow): self.m_input_device = self.m_audio_input.start() self.m_audio_input.resume() self.m_output_device = self.m_audio_output.start()For the first deck i have made this:
from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia from PyQt5 import QtCore, QtMultimedia, QtWidgets from PyQt5.QtTest import QSignalSpy from PyQt5.QtCore import QObject, pyqtSlot, pyqtSignal, QByteArray, QIODevice, QFileInfo from PyQt5.QtMultimedia import QAudioDecoder, QAudioFormat, QMediaObject, QAudioBuffer, QAudioOutput, QAudio import data class Deck1(): def __init__(self,ui,MainWindow): self.output_devices_qt = QtMultimedia.QAudioDeviceInfo.availableDevices(QtMultimedia.QAudio.AudioOutput) self.decode_test_sound(r"C:\Users\Χρήστος\Desktop\Papinhio player\project\disket box\mp3 files\ΑΓΙΑ ΚΥΡΙΑΚΗ.mp3",ui,MainWindow) ui.deck_1_volume_control.valueChanged.connect(lambda volume:self.change_deck_1_volume(volume,ui,MainWindow)) def change_deck_1_volume(self,volume,ui,MainWindow): vol = volume/100 vol_text = round(vol,1) ui.deck_1_volume_label.setText(str(vol_text)+"/1.0") self.m_audio_output.setVolume(vol) def decode_test_sound(self,file_path,ui,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(ui,MainWindow)) self.decoder.setAudioFormat(self.desiredFormat) self.decoder.setSourceFilename(file_path) self.decoder.start() #self.start_player(ui,MainWindow) self.play_status = 0 def readBuffer(self,ui,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(ui,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,ui,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(ui,MainWindow)) def sound_mp3(self,ui,MainWindow): if(self.play_status!=0): self.m_play_called = False if self.m_buffer.isEmpty(): self.stop_player(ui,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) samples_data = samples.data() print(samples_data) 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,ui,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(ui,MainWindow)) self.timer_play.start(10) def stop_player(self,ui,MainWindow): self.play_status = 0 self.m_audio_output.stop() self.timer_play.stop()I want:
- change the strength of audio bit rate (deck 1,microphone),
- change the speed of audio bit rate (deck 1)
- change the time position of audio bit rate (deck 1)
Any advice would be useful.
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@papinhio said in Working with audio multimedia in pyqt5:
Any advice would be useful.
Start experimenting...Oh, and read class docs.
