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VideoPlayerDialog.py
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from __future__ import print_function
from PySide2 import QtGui
from PySide2 import QtCore
from PySide2 import QtWidgets
from PySide2.QtCore import Qt
from PySide2.QtCore import Signal
from DisplayWidget import DisplayWidget
from FrameGrabber import FrameGrabber
import sys
import av
class VideoPlayerDialog(QtWidgets.QDialog):
request_time = Signal(object)
load_file = Signal(object)
def __init__(self, parent=None,path=None):
super(VideoPlayerDialog, self).__init__(parent)
self.mw = parent
self.rate = None
self.maximum = 0
self.dispbefore_seek = 0
self.captured = False
self.display = DisplayWidget()
self.timeline = QtWidgets.QScrollBar(Qt.Horizontal)
self.timeline_base = 100000
self.frame_grabber = FrameGrabber(mw=self.mw)
self.frame_capture = QtWidgets.QPushButton("Set thumbnail")
# self.frame_capture.setEnabled(False)
self.frame_capture.setFixedWidth(120)
self.frame_capture.clicked.connect(self.frame_captured)
self.frame_control = QtWidgets.QDoubleSpinBox()
self.frame_control.setFixedWidth(100)
self.timeline.valueChanged.connect(self.slider_changed)
self.frame_control.valueChanged.connect(self.frame_changed)
self.request_time.connect(self.frame_grabber.request_time)
self.load_file.connect(self.frame_grabber.set_container)
self.frame_grabber.frame_ready.connect(self.display.setPixmap)
self.frame_grabber.update_frame_range.connect(self.set_frame_range)
self.frame_grabber_thread = QtCore.QThread()
self.frame_grabber.moveToThread(self.frame_grabber_thread)
self.frame_grabber_thread.start()
control_layout = QtWidgets.QHBoxLayout()
control_layout.addWidget(self.frame_control)
control_layout.addWidget(self.timeline)
control_layout.addWidget(self.frame_capture)
layout = QtWidgets.QVBoxLayout()
layout.addWidget(self.display)
layout.addLayout(control_layout)
self.setLayout(layout)
self.setAcceptDrops(False)
self.setWindowTitle(self.tr("Movie Preview"))
if path:
container = None
try:
container = av.open(path, 'r',metadata_encoding='utf-8',metadata_errors='ignore')
except Exception as ex:
exstr = 'av.open() exception:' + path + " " + str(ex)
print(exstr)
# print mainwindow?
return self.Rejected
self.set_file(container)
def set_file(self, path):
#self.seq_grabber.set_file(path)
self.load_file.emit(path)
self.frame_changed(0)
def set_slider(self,req):
self.dispbefore_seek = req
@QtCore.Slot(object, object)
def set_frame_range(self, maximum, rate):
self.timeline.setMaximum(int(maximum * self.timeline_base))
self.frame_control.setMaximum(maximum)
self.frame_control.setSingleStep(1 / rate)
#self.timeline.setSingleStep( int(AV_TIME_BASE * 1/rate))
self.maximum = maximum
self.rate = rate
if self.dispbefore_seek == 1:
self.frame_changed(self.maximum / 2)
elif self.dispbefore_seek == 2:
self.frame_changed(self.maximum)
else: #start
pass
def slider_changed(self, value):
self.frame_changed(value * 1.0 / float(self.timeline_base))
def frame_changed(self, value):
self.timeline.blockSignals(True)
self.frame_control.blockSignals(True)
self.timeline.setValue(int(value * self.timeline_base))
self.frame_control.setValue(value)
self.timeline.blockSignals(False)
self.frame_control.blockSignals(False)
#self.display.current_index = value
self.frame_grabber.active_time = value
self.request_time.emit(value)
def frame_captured(self):
if self.display.pixmap:
self.mw.selectedframe = self.display.pixmap
self.captured = True
self.accept()
self.close()
def keyPressEvent(self, event):
if event.key() in (Qt.Key_Right, Qt.Key_Left):
direction = 1
if event.key() == Qt.Key_Left:
direction = -1
if event.modifiers() == Qt.ShiftModifier:
direction *= 10
direction = direction * 1 / self.rate
self.frame_changed(self.frame_control.value() + direction)
else:
super(VideoPlayerDialog, self).keyPressEvent(event)
def mousePressEvent(self, event):
# clear focus of spinbox
focused_widget = QtWidgets.QApplication.focusWidget()
if focused_widget:
focused_widget.clearFocus()
super(VideoPlayerDialog, self).mousePressEvent(event)
def dragEnterEvent(self, event):
event.accept()
def dropEvent(self, event):
mime = event.mimeData()
event.accept()
if mime.hasUrls():
path = str(mime.urls()[0].path())
self.set_file(path)
def closeEvent(self, event):
self.frame_grabber.active_time = -1
self.frame_grabber_thread.quit()
self.frame_grabber_thread.wait()
# for key, value in sorted(self.seq_grabber.pts_map.items()):
# print(key, '=', value)
event.accept()
if self.mw.selectedframe and self.captured:
self.accept()
else:
self.reject()