1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
from PIL import Image, ImageDraw
from PyQt4 import uic, QtGui, QtCore
import os
import subprocess
import threading
from queue import PriorityQueue
from . import __base__
class Video:
'''Video Component Frame-Fetcher'''
def __init__(self, **kwargs):
mandatoryArgs = [
'ffmpeg', # path to ffmpeg, usually core.FFMPEG_BIN
'videoPath',
'width',
'height',
'frameRate', # frames per second
'chunkSize', # number of bytes in one frame
'parent'
]
for arg in mandatoryArgs:
try:
exec('self.%s = kwargs[arg]' % arg)
except KeyError:
raise __base__.BadComponentInit(arg, self.__doc__)
self.frameNo = -1
self.currentFrame = 'None'
if 'loopVideo' in kwargs and kwargs['loopVideo']:
self.loopValue = '-1'
else:
self.loopValue = '0'
self.command = [
self.ffmpeg,
'-thread_queue_size', '512',
'-r', str(self.frameRate),
'-stream_loop', self.loopValue,
'-i', self.videoPath,
'-f', 'image2pipe',
'-pix_fmt', 'rgba',
'-filter:v', 'scale='+str(self.width)+':'+str(self.height),
'-vcodec', 'rawvideo', '-',
]
self.frameBuffer = PriorityQueue()
self.frameBuffer.maxsize = self.frameRate
self.finishedFrames = {}
self.thread = threading.Thread(
target=self.fillBuffer,
name=self.__doc__
)
self.thread.daemon = True
self.thread.start()
def frame(self, num):
while True:
if num in self.finishedFrames:
image = self.finishedFrames.pop(num)
return Image.frombytes('RGBA', (self.width, self.height), image)
i, image = self.frameBuffer.get()
self.finishedFrames[i] = image
self.frameBuffer.task_done()
def fillBuffer(self):
pipe = subprocess.Popen(
self.command, stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL, bufsize=10**8
)
while True:
if self.parent.canceled:
break
self.frameNo += 1
# If we run out of frames, use the last good frame and loop.
if len(self.currentFrame) == 0:
self.frameBuffer.put((self.frameNo-1, self.lastFrame))
continue
self.currentFrame = pipe.stdout.read(self.chunkSize)
if len(self.currentFrame) != 0:
self.frameBuffer.put((self.frameNo, self.currentFrame))
self.lastFrame = self.currentFrame
class Component(__base__.Component):
'''Video'''
modified = QtCore.pyqtSignal(int, bool)
def widget(self, parent):
self.parent = parent
self.settings = parent.settings
page = uic.loadUi(os.path.join(
os.path.dirname(os.path.realpath(__file__)),
'video.ui'
))
self.videoPath = ''
self.x = 0
self.y = 0
self.loopVideo = False
page.lineEdit_video.textChanged.connect(self.update)
page.pushButton_video.clicked.connect(self.pickVideo)
page.checkBox_loop.stateChanged.connect(self.update)
self.page = page
return page
def update(self):
super().update()
self.videoPath = self.page.lineEdit_video.text()
self.loopVideo = self.page.checkBox_loop.isChecked()
self.parent.drawPreview()
def previewRender(self, previewWorker):
width = int(previewWorker.core.settings.value('outputWidth'))
height = int(previewWorker.core.settings.value('outputHeight'))
self.chunkSize = 4*width*height
frame = self.getPreviewFrame(width, height)
if not frame:
return Image.new("RGBA", (width, height), (0, 0, 0, 0))
else:
return frame
def preFrameRender(self, **kwargs):
super().preFrameRender(**kwargs)
width = int(self.worker.core.settings.value('outputWidth'))
height = int(self.worker.core.settings.value('outputHeight'))
self.chunkSize = 4*width*height
self.video = Video(
ffmpeg=self.parent.core.FFMPEG_BIN, videoPath=self.videoPath,
width=width, height=height, chunkSize=self.chunkSize,
frameRate=int(self.settings.value("outputFrameRate")),
parent=self.parent, loopVideo=self.loopVideo
)
def frameRender(self, moduleNo, arrayNo, frameNo):
return self.video.frame(frameNo)
def loadPreset(self, pr, presetName=None):
super().loadPreset(pr, presetName)
self.page.lineEdit_video.setText(pr['video'])
self.page.checkBox_loop.setChecked(pr['loop'])
def savePreset(self):
return {
'preset': self.currentPreset,
'video': self.videoPath,
'loop': self.loopVideo,
}
def pickVideo(self):
imgDir = self.settings.value("backgroundDir", os.path.expanduser("~"))
filename = QtGui.QFileDialog.getOpenFileName(
self.page, "Choose Video",
imgDir, "Video Files (*.mp4 *.mov)"
)
if filename:
self.settings.setValue("backgroundDir", os.path.dirname(filename))
self.page.lineEdit_video.setText(filename)
self.update()
def getPreviewFrame(self, width, height):
if not self.videoPath or not os.path.exists(self.videoPath):
return
command = [
self.parent.core.FFMPEG_BIN,
'-thread_queue_size', '512',
'-i', self.videoPath,
'-f', 'image2pipe',
'-pix_fmt', 'rgba',
'-filter:v', 'scale='+str(width)+':'+str(height),
'-vcodec', 'rawvideo', '-',
'-ss', '90',
'-vframes', '1',
]
pipe = subprocess.Popen(
command, stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL, bufsize=10**8
)
byteFrame = pipe.stdout.read(self.chunkSize)
image = Image.frombytes('RGBA', (width, height), byteFrame)
pipe.stdout.close()
pipe.kill()
return image
|
