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# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import os
from PySide6.QtMultimedia import (QCameraFormat, QMediaFormat, QMediaRecorder,
QVideoFrameFormat)
from PySide6.QtWidgets import QDialog
is_android = os.environ.get('ANDROID_ARGUMENT')
if is_android:
from ui_videosettings_mobile import Ui_VideoSettingsUi
else:
from ui_videosettings import Ui_VideoSettingsUi
def box_value(box):
idx = box.currentIndex()
return None if idx == -1 else box.itemData(idx)
def select_combo_box_item(box, value):
idx = box.findData(value)
if idx != -1:
box.setCurrentIndex(idx)
def to_formatted_string(cameraFormat):
pf = cameraFormat.pixelFormat()
format_name = QVideoFrameFormat.pixelFormatToString(pf)
w = cameraFormat.resolution().width()
h = cameraFormat.resolution().height()
min_rate = int(cameraFormat.minFrameRate())
max_rate = int(cameraFormat.maxFrameRate())
return f"{format_name} {w}x{h} {min_rate}-{max_rate}FPS"
class VideoSettings(QDialog):
def __init__(self, mediaRecorder, parent=None):
super().__init__(parent)
self._media_recorder = mediaRecorder
self.m_updatingFormats = False
self._ui = Ui_VideoSettingsUi()
self._ui.setupUi(self)
# sample rate:
audio_device = self._media_recorder.captureSession().audioInput().device()
self._ui.audioSampleRateBox.setRange(audio_device.minimumSampleRate(),
audio_device.maximumSampleRate())
# camera format
self._ui.videoFormatBox.addItem("Default camera format",
QCameraFormat())
camera = self._media_recorder.captureSession().camera()
video_formats = camera.cameraDevice().videoFormats()
for format in video_formats:
self._ui.videoFormatBox.addItem(to_formatted_string(format), format)
self._ui.videoFormatBox.currentIndexChanged.connect(self.video_format_changed)
self.set_fps_range(camera.cameraFormat())
self._ui.fpsSlider.valueChanged.connect(self._ui.fpsSpinBox.setValue)
self._ui.fpsSpinBox.valueChanged.connect(self._ui.fpsSlider.setValue)
self.update_formats_and_codecs()
self._ui.audioCodecBox.currentIndexChanged.connect(self.update_formats_and_codecs)
self._ui.videoCodecBox.currentIndexChanged.connect(self.update_formats_and_codecs)
self._ui.containerFormatBox.currentIndexChanged.connect(self.update_formats_and_codecs)
self._ui.qualitySlider.setRange(0, QMediaRecorder.VeryHighQuality.value)
format = self._media_recorder.mediaFormat()
select_combo_box_item(self._ui.containerFormatBox, format.fileFormat())
select_combo_box_item(self._ui.audioCodecBox, format.audioCodec())
select_combo_box_item(self._ui.videoCodecBox, format.videoCodec())
self._ui.qualitySlider.setValue(self._media_recorder.quality().value)
self._ui.audioSampleRateBox.setValue(self._media_recorder.audioSampleRate())
select_combo_box_item(self._ui.videoFormatBox, camera.cameraFormat())
self._ui.fpsSlider.setValue(self._media_recorder.videoFrameRate())
self._ui.fpsSpinBox.setValue(self._media_recorder.videoFrameRate())
def apply_settings(self):
format = QMediaFormat()
format.setFileFormat(box_value(self._ui.containerFormatBox))
format.setAudioCodec(box_value(self._ui.audioCodecBox))
format.setVideoCodec(box_value(self._ui.videoCodecBox))
self._media_recorder.setMediaFormat(format)
q = self._ui.qualitySlider.value()
self._media_recorder.setQuality(QMediaRecorder.Quality(q))
self._media_recorder.setAudioSampleRate(self._ui.audioSampleRateBox.value())
camera_format = box_value(self._ui.videoFormatBox)
self._media_recorder.setVideoResolution(camera_format.resolution())
self._media_recorder.setVideoFrameRate(self._ui.fpsSlider.value())
camera = self._media_recorder.captureSession().camera()
camera.setCameraFormat(camera_format)
def update_formats_and_codecs(self):
if self.m_updatingFormats:
return
self.m_updatingFormats = True
format = QMediaFormat()
if self._ui.containerFormatBox.count():
format.setFileFormat(box_value(self._ui.containerFormatBox))
if self._ui.audioCodecBox.count():
format.setAudioCodec(box_value(self._ui.audioCodecBox))
if self._ui.videoCodecBox.count():
format.setVideoCodec(box_value(self._ui.videoCodecBox))
current_index = 0
self._ui.audioCodecBox.clear()
self._ui.audioCodecBox.addItem("Default audio codec",
QMediaFormat.AudioCodec.Unspecified)
for codec in format.supportedAudioCodecs(QMediaFormat.Encode):
if codec == format.audioCodec():
current_index = self._ui.audioCodecBox.count()
desc = QMediaFormat.audioCodecDescription(codec)
self._ui.audioCodecBox.addItem(desc, codec)
self._ui.audioCodecBox.setCurrentIndex(current_index)
current_index = 0
self._ui.videoCodecBox.clear()
self._ui.videoCodecBox.addItem("Default video codec",
QMediaFormat.VideoCodec.Unspecified)
for codec in format.supportedVideoCodecs(QMediaFormat.Encode):
if codec == format.videoCodec():
current_index = self._ui.videoCodecBox.count()
desc = QMediaFormat.videoCodecDescription(codec)
self._ui.videoCodecBox.addItem(desc, codec)
self._ui.videoCodecBox.setCurrentIndex(current_index)
current_index = 0
self._ui.containerFormatBox.clear()
self._ui.containerFormatBox.addItem("Default file format",
QMediaFormat.UnspecifiedFormat)
for container in format.supportedFileFormats(QMediaFormat.Encode):
if container == format.fileFormat():
current_index = self._ui.containerFormatBox.count()
desc = QMediaFormat.fileFormatDescription(container)
self._ui.containerFormatBox.addItem(desc, container)
self._ui.containerFormatBox.setCurrentIndex(current_index)
self.m_updatingFormats = False
def video_format_changed(self):
camera_format = box_value(self._ui.videoFormatBox)
self.set_fps_range(camera_format)
def set_fps_range(self, format):
min_fr = format.minFrameRate()
max_fr = format.maxFrameRate()
self._ui.fpsSlider.setRange(min_fr, max_fr)
self._ui.fpsSpinBox.setRange(min_fr, max_fr)
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