def initFilter(self):
self.chain = FilterChain()
self.chain._filters.append(
Filter(FilterType.LShelving, self.LOW_EQ, 0, 1, enabled=True))
# self.chain._filters.append(Filter(FilterType.HShelving, deffs[4], 0, 1, enabled = True))
# self.chain._filters.append(Filter(FilterType.Peak, deffs[0], 0, 1, enabled = True))
self.chain._filters.append(
Filter(FilterType.Peak, self.HIGH_EQ, 0, 1, enabled=True))
# self.chain._filters.append(Filter(FilterType.LPButter, deffs[3], 0, 1, enabled = True))
# self.chain._filters.append(Filter(FilterType.HPButter, deffs[3], 0, 1, enabled = True))
self.chain.reset()
def concat_videos(list, outdir=None, ffmpeg='ffmpeg', audio=True):
dir = outdir if outdir else os.path.dirname(os.path.realpath(__file__))
videos = _download_file_list(list, dir)
if bool(videos) == False:
return None
# make the video files list
file_name = os.path.normpath(os.path.join(dir, str(uuid.uuid4())))
with open(file_name, 'w') as file:
for video in videos:
file.write("file '" + video + "'\n")
# concatenate the videos
output = os.path.normpath(os.path.join(dir, "video.mp4"))
ff = FFmpeg(
executable = ffmpeg,
global_options = ["-y", "-f" ,"concat", "-safe", "0", "-protocol_whitelist", "file,http,https,tcp,tls"],
inputs = {file_name: None},
outputs = {output: "-c copy"}
)
#print ff.cmd
out = ff.run()
# if audio background is requested we will try to get duration of movie and matching audio file
if audio == True:
# collect data for concatenated movie total duration
length = time.strptime(re.findall("(?<=time\\=)[0-9.:]+", out)[-1],"%H:%M:%S.%f")
lenght_t = datetime.timedelta(hours=length.tm_hour,minutes=length.tm_min,seconds=length.tm_sec).total_seconds()
inputs = OrderedDict([(output, None)])
applied_filters = ["[0:v]null[video]"]
audio_track = _get_audio(lenght_t, dir)
# build the filter chain and execute it
audioseq = FilterChain([
ReplicateAudioFilter(repetitions = int(math.ceil(lenght_t / float(audio_track[1])))),
ConcatFilter(is_video = False, outputtag = "caf"),
TrimAudioFilter(length = lenght_t),
FadeOutAudioFilter(start = lenght_t-AUDIO_FADE_OUT_T, length = AUDIO_FADE_OUT_T, outstreamprefix="audio")
])
applied_filters += audioseq.generate(["1:a"])[0]
# add the audio track to the inputs collection
inputs.update({audio_track[0]: None})
# build the video
output = os.path.normpath(os.path.join(dir, "videoa.mp4"))
ff = FFmpeg(
executable = ffmpeg,
global_options = ["-y"],
inputs = inputs,
outputs = {output: "-filter_complex \"" + ";".join(applied_filters) + "\" -map \"[video]\" -map \"[audio]\""}
)
#print ff.cmd
ff.run()
return output
def initFilter():
global deffs, chain, fs
chain = FilterChain()
chain._filters.append(
Filter(FilterType.LShelving, LOW_EQ, 0, 1, enabled=True))
# chain._filters.append(Filter(FilterType.HShelving, deffs[4], 0, 1, enabled = True))
# chain._filters.append(Filter(FilterType.Peak, deffs[0], 0, 1, enabled = True))
chain._filters.append(Filter(FilterType.Peak, HIGH_EQ, 0, 1, enabled=True))
# chain._filters.append(Filter(FilterType.LPButter, deffs[3], 0, 1, enabled = True))
# chain._filters.append(Filter(FilterType.HPButter, deffs[3], 0, 1, enabled = True))
chain.reset()
def __init__(self, frag=None, filters=None):
"""The ``frag`` argument must be a :py:class:`splat.data.Fragment`
instance. If `None`, a default empty fragment will be automatically
created (2 channels, 48kHz).
A chain of ``filters`` can also be initialised here with a list of
filter functions and internally create a
:py:meth:`splat.filters.FilterChain` object. This can be altered later
via :py:attr:`splat.gen.Generator.filters`.
"""
self.frag = frag
self._filter_chain = FilterChain(filters)
self._levels = 1.0
class ToneControl:
def __init__(self):
self.LOW_EQ_FREQ = 80.0
self.HIGH_EQ_FREQ = 8000.0
self.HIGH_EQ = (2 * self.HIGH_EQ_FREQ) / gv.SAMPLERATE
self.LOW_EQ = (2 * self.LOW_EQ_FREQ) / gv.SAMPLERATE
self.filterTypes = OrderedDict({
FilterType.LPButter: 'Low Pass (Flat)',
FilterType.LPBrickwall: 'Low Pass (Brickwall)',
FilterType.HPButter: 'High Pass (Flat)',
FilterType.HPBrickwall: 'High Pass (Brickwall)',
FilterType.LShelving: 'Low Shelf',
FilterType.HShelving: 'High Shelf',
FilterType.Peak: 'Peak'
})
self.eps = 0.0000001
self.TYPE = 1
self.F = 2
self.G = 3
self.Q = 4
self.deffs = [80, 1000, 3000, 5000, 15000]
self.chain = None
self.initFilter()
def initFilter(self):
self.chain = FilterChain()
self.chain._filters.append(
Filter(FilterType.LShelving, self.LOW_EQ, 0, 1, enabled=True))
# self.chain._filters.append(Filter(FilterType.HShelving, deffs[4], 0, 1, enabled = True))
# self.chain._filters.append(Filter(FilterType.Peak, deffs[0], 0, 1, enabled = True))
self.chain._filters.append(
Filter(FilterType.Peak, self.HIGH_EQ, 0, 1, enabled=True))
# self.chain._filters.append(Filter(FilterType.LPButter, deffs[3], 0, 1, enabled = True))
# self.chain._filters.append(Filter(FilterType.HPButter, deffs[3], 0, 1, enabled = True))
self.chain.reset()
def updateFilter(self, i, fc, g, Q):
oldf = self.chain._filters[i]
type = oldf._type
# print oldf._type, oldf._fc, oldf._g, oldf._Q
# fc_val = fc * 2 / fs
# print fc_val, g, Q
f = Filter(type, fc, g, Q)
self.chain.updateFilt(i, f)
# chain.changeFilt(i, type, fc, g, Q)
self.chain.reset()
def concat_videos(list, outdir=None, ffmpeg='ffmpeg', audio=True):
dir = outdir if outdir else os.path.dirname(os.path.realpath(__file__))
videos = _download_file_list(list, dir)
if bool(videos) == False:
return None
# make the video files list
file_name = os.path.normpath(os.path.join(dir, str(uuid.uuid4())))
with open(file_name, 'w') as file:
for video in videos:
file.write("file '" + video + "'\n")
# concatenate the videos
output = os.path.normpath(os.path.join(dir, "video.mp4"))
ff = FFmpeg(executable=ffmpeg,
global_options=[
"-y", "-f", "concat", "-safe", "0", "-protocol_whitelist",
"file,http,https,tcp,tls"
],
inputs={file_name: None},
outputs={output: "-c copy"})
#print ff.cmd
out = ff.run()
# if audio background is requested we will try to get duration of movie and matching audio file
if audio == True:
# collect data for concatenated movie total duration
length = time.strptime(
re.findall("(?<=time\\=)[0-9.:]+", out)[-1], "%H:%M:%S.%f")
lenght_t = datetime.timedelta(hours=length.tm_hour,
minutes=length.tm_min,
seconds=length.tm_sec).total_seconds()
inputs = OrderedDict([(output, None)])
applied_filters = ["[0:v]null[video]"]
audio_track = _get_audio(lenght_t, dir)
# build the filter chain and execute it
audioseq = FilterChain([
ReplicateAudioFilter(
repetitions=int(math.ceil(lenght_t / float(audio_track[1])))),
ConcatFilter(is_video=False, outputtag="caf"),
TrimAudioFilter(length=lenght_t),
FadeOutAudioFilter(start=lenght_t - AUDIO_FADE_OUT_T,
length=AUDIO_FADE_OUT_T,
outstreamprefix="audio")
])
applied_filters += audioseq.generate(["1:a"])[0]
# add the audio track to the inputs collection
inputs.update({audio_track[0]: None})
# build the video
output = os.path.normpath(os.path.join(dir, "videoa.mp4"))
ff = FFmpeg(executable=ffmpeg,
global_options=["-y"],
inputs=inputs,
outputs={
output:
"-filter_complex \"" + ";".join(applied_filters) +
"\" -map \"[video]\" -map \"[audio]\""
})
#print ff.cmd
ff.run()
return output
def _make(images, scene_duration, dir, ffmpeg, width, height, audio, effect,
transition, batch_mode):
# exit if no images were found
if bool(images) == False:
return None
scene_duration_f = scene_duration * FPS
w = width / 2 * 2 if width != None else -2 if height != None else OUTPUT_VIDEO_WIDTH
h = height / 2 * 2 if height != None else -2 if width != None else OUTPUT_VIDEO_HEIGHT
# build the animation dictionary of filters and first slide handling flag
animations = {
"zoompan": (CombiningFilter([
ZoompanEffectFilter(maxzoom=MAX_ZOOM, frames=scene_duration_f),
ImageSlideFilter(duration=scene_duration, width=w, height=h)
],
outstreamprefix="zpaf"), False),
"fadeinout": (CombiningFilter([
FadeTransitionFilter(transition_duration=TRANSITION_T,
total_duration=scene_duration),
ImageSlideFilter(duration=scene_duration, width=w, height=h)
],
outstreamprefix="faf"), False),
"zoompanfadeinout": (CombiningFilter([
ZoompanEffectFilter(maxzoom=MAX_ZOOM, frames=scene_duration_f),
FadeTransitionFilter(transition_duration=TRANSITION_T,
total_duration=scene_duration),
ImageSlideFilter(duration=scene_duration, width=w, height=h)
],
outstreamprefix="zpfaf"), False),
"slidein": (FilterChain([
ImageSlideFilter(duration=scene_duration, width=w, height=h),
SlideTransitionFilter(
transition_duration=TRANSITION_T,
preserve_first=batch_mode != BatchMode.non_initial_batch)
]), True),
"zoompanslidein": (ZoompanSlideInTransitionFilter(
transition_duration=TRANSITION_T,
total_duration=scene_duration,
fps=FPS,
width=w,
height=h,
maxzoom=MAX_ZOOM,
preserve_first=batch_mode != BatchMode.non_initial_batch), True)
}
animationkey = (effect if effect else "") + (transition
if transition else "")
animation = animations[animationkey] if animationkey in animations else None
# determines if transition is requested and how to interpret the inputs list
preserve_first_slide = animation[1] if animation else False
if batch_mode != BatchMode.non_initial_batch:
slides = images
lenght_t = scene_duration * len(slides)
elif preserve_first_slide:
slides = images
lenght_t = scene_duration * (len(slides) - 1)
else:
slides = images[1:]
lenght_t = scene_duration * len(slides)
inputs = OrderedDict([(i, "-loop 1") for i in slides])
# create the video filter chain
videoseq = FilterChain()
if animation:
videoseq.append(animation[0])
else:
videoseq.append(
ImageSlideFilter(duration=scene_duration, width=w, height=h))
videoseq.append(ConcatFilter(True, "video"))
applied_filters = videoseq.generate(
["%d:v" % i for (i, x) in enumerate(inputs)])[0]
# load audio track if requested
if audio == True:
audio_track = _get_audio(lenght_t, dir)
# build the filter chain and execute it
audioseq = FilterChain([
ReplicateAudioFilter(
repetitions=int(math.ceil(lenght_t / float(audio_track[1])))),
ConcatFilter(is_video=False, outputtag="caf"),
TrimAudioFilter(length=lenght_t),
FadeOutAudioFilter(start=lenght_t - AUDIO_FADE_OUT_T,
length=AUDIO_FADE_OUT_T,
outstreamprefix="audio")
])
applied_filters += audioseq.generate(["%d:a" % len(inputs)])[0]
# add the audio track to the inputs collection
inputs.update({audio_track[0]: None})
# build the video
output = "video.mp4"
output = dir + "/" + output if dir else output
ff = FFmpeg(executable=ffmpeg,
global_options=["-y"],
inputs=inputs,
outputs={
output:
"-filter_complex \"" + ";".join(applied_filters) +
"\" -map \"[video]\"" +
(" -map \"[audio]\"" if audio == True else "") +
" -c:v libx264 -pix_fmt yuvj420p -q:v 1"
})
#print ff.cmd
ff.run()
return output
def filters(self, filters):
self._filter_chain = FilterChain(filters)
def __init__(self, *args):
QWidget.__init__(self, *args)
self.setFixedSize(1000,500)
self.setWindowTitle('EQ')
self.show()
layout = QVBoxLayout(self)
#--------- track controls -----------
open_btn = QPushButton('Load file')
open_btn.clicked.connect(self.onOpenBtnClick)
self.path_label = QLabel('')
self.loop_box = QCheckBox('Loop')
play_btn = QPushButton('Play')
play_btn.clicked.connect(self.onPlayBtnClick)
stop_btn = QPushButton('Stop')
stop_btn.clicked.connect(self.onStopBtnClick)
save_btn = QPushButton('Apply EQ and save')
save_btn.clicked.connect(self.onSaveBtnClick)
trackctrl_layout = QHBoxLayout()
trackctrl_layout.addWidget(open_btn)
trackctrl_layout.addWidget(self.path_label)
trackctrl_layout.addWidget(play_btn)
trackctrl_layout.addWidget(stop_btn)
trackctrl_layout.addWidget(self.loop_box)
trackctrl_layout.addSpacing(50)
trackctrl_layout.addWidget(save_btn)
layout.addLayout(trackctrl_layout)
#--------- plot ------------
self.plotwin = PlotWin(self)
layout.addWidget(self.plotwin)
#--------- filter controls ----------
sub_layout = QHBoxLayout()
labels_layout = QVBoxLayout()
labels_layout.addWidget(QLabel('Filter type'))
labels_layout.addWidget(QLabel('Cutoff/Center'))
labels_layout.addWidget(QLabel('Gain'))
labels_layout.addWidget(QLabel('Q or Slope'))
sub_layout.addLayout(labels_layout)
self.nodes = []
deffs = [100, 1000, 3000, 5000, 15000]
for i in range(0,5):
filter_list = QComboBox()
filter_list.addItems(list(filterTypes.values()))
if i == 0:
filter_list.setCurrentIndex(FilterType.HPBrickwall)
elif i == 4:
filter_list.setCurrentIndex(FilterType.LPBrickwall)
else:
filter_list.setCurrentIndex(FilterType.Peak)
checkbox = QCheckBox('On')
freq_txt = QLineEdit(str(deffs[i]))
freq_txt.setValidator(QIntValidator(self.plotwin.xaxis.min,
self.plotwin.xaxis.max, self))
gain_txt = QLineEdit('0')
gain_txt.setValidator(QDoubleValidator(-12, 12, 1, self))
q_slider = QSlider(Qt.Horizontal)
node = NodeLayout(i, self)
node.addControls(checkbox, filter_list, freq_txt, gain_txt, q_slider)
node.setControlsEnabled(False)
self.nodes.append(node)
sub_layout.addLayout(node)
node.enabled.connect(self.onFilterEnableChange)
node.updated.connect(self.paramChanged)
layout.addLayout(sub_layout)
#------------------------------------
self.setLayout(layout)
#----------- Filters ----------------
self.chain = FilterChain()
deffs = [fc * 2 / fs for fc in deffs]
self.chain._filters.append(Filter(FilterType.HPBrickwall, deffs[0], enabled = False))
self.chain._filters.append(Filter(FilterType.Peak, deffs[1], enabled = False))
self.chain._filters.append(Filter(FilterType.Peak, deffs[2], enabled = False))
self.chain._filters.append(Filter(FilterType.Peak, deffs[3], enabled = False))
self.chain._filters.append(Filter(FilterType.LPBrickwall, deffs[4], enabled = False))
self.updateChainTF()
self.plotwin.updateHandles()
self.stream = None
self.wf = None
class MainWindow(QWidget):
def __init__(self, *args):
QWidget.__init__(self, *args)
self.setFixedSize(1000,500)
self.setWindowTitle('EQ')
self.show()
layout = QVBoxLayout(self)
#--------- track controls -----------
open_btn = QPushButton('Load file')
open_btn.clicked.connect(self.onOpenBtnClick)
self.path_label = QLabel('')
self.loop_box = QCheckBox('Loop')
play_btn = QPushButton('Play')
play_btn.clicked.connect(self.onPlayBtnClick)
stop_btn = QPushButton('Stop')
stop_btn.clicked.connect(self.onStopBtnClick)
save_btn = QPushButton('Apply EQ and save')
save_btn.clicked.connect(self.onSaveBtnClick)
trackctrl_layout = QHBoxLayout()
trackctrl_layout.addWidget(open_btn)
trackctrl_layout.addWidget(self.path_label)
trackctrl_layout.addWidget(play_btn)
trackctrl_layout.addWidget(stop_btn)
trackctrl_layout.addWidget(self.loop_box)
trackctrl_layout.addSpacing(50)
trackctrl_layout.addWidget(save_btn)
layout.addLayout(trackctrl_layout)
#--------- plot ------------
self.plotwin = PlotWin(self)
layout.addWidget(self.plotwin)
#--------- filter controls ----------
sub_layout = QHBoxLayout()
labels_layout = QVBoxLayout()
labels_layout.addWidget(QLabel('Filter type'))
labels_layout.addWidget(QLabel('Cutoff/Center'))
labels_layout.addWidget(QLabel('Gain'))
labels_layout.addWidget(QLabel('Q or Slope'))
sub_layout.addLayout(labels_layout)
self.nodes = []
deffs = [100, 1000, 3000, 5000, 15000]
for i in range(0,5):
filter_list = QComboBox()
filter_list.addItems(list(filterTypes.values()))
if i == 0:
filter_list.setCurrentIndex(FilterType.HPBrickwall)
elif i == 4:
filter_list.setCurrentIndex(FilterType.LPBrickwall)
else:
filter_list.setCurrentIndex(FilterType.Peak)
checkbox = QCheckBox('On')
freq_txt = QLineEdit(str(deffs[i]))
freq_txt.setValidator(QIntValidator(self.plotwin.xaxis.min,
self.plotwin.xaxis.max, self))
gain_txt = QLineEdit('0')
gain_txt.setValidator(QDoubleValidator(-12, 12, 1, self))
q_slider = QSlider(Qt.Horizontal)
node = NodeLayout(i, self)
node.addControls(checkbox, filter_list, freq_txt, gain_txt, q_slider)
node.setControlsEnabled(False)
self.nodes.append(node)
sub_layout.addLayout(node)
node.enabled.connect(self.onFilterEnableChange)
node.updated.connect(self.paramChanged)
layout.addLayout(sub_layout)
#------------------------------------
self.setLayout(layout)
#----------- Filters ----------------
self.chain = FilterChain()
deffs = [fc * 2 / fs for fc in deffs]
self.chain._filters.append(Filter(FilterType.HPBrickwall, deffs[0], enabled = False))
self.chain._filters.append(Filter(FilterType.Peak, deffs[1], enabled = False))
self.chain._filters.append(Filter(FilterType.Peak, deffs[2], enabled = False))
self.chain._filters.append(Filter(FilterType.Peak, deffs[3], enabled = False))
self.chain._filters.append(Filter(FilterType.LPBrickwall, deffs[4], enabled = False))
self.updateChainTF()
self.plotwin.updateHandles()
self.stream = None
self.wf = None
@Slot()
def onOpenBtnClick(self):
dialog = QFileDialog(self)
dialog.setFileMode(QFileDialog.ExistingFile)
dialog.setNameFilter('Audio (*.wav)')
if dialog.exec_():
file_name = dialog.selectedFiles()[0]
self.path_label.setText(file_name)
self.wf = wave.open(file_name,'rb')
self.openStream()
@Slot()
def onPlayBtnClick(self):
if self.stream:
if self.wf.tell() == self.wf.getnframes() * self.wf.getnchannels():
self.wf.rewind()
self.openStream()
else:
self.stream.start_stream()
@Slot()
def onStopBtnClick(self):
if self.stream:
self.stream.stop_stream()
@Slot()
def onSaveBtnClick(self):
dialog = QFileDialog(self)
dialog.setFileMode(QFileDialog.AnyFile)
dialog.setNameFilter('Audio (*.wav)')
if dialog.exec_():
file_name = dialog.selectedFiles()[0] + '.wav'
ww = wave.open(file_name,'wb')
wf = self.wf
ww.setframerate(wf.getframerate())
ww.setsampwidth(wf.getsampwidth())
ww.setnchannels(wf.getnchannels())
self.wf.rewind()
self.chain.reset()
data = wf.readframes(wf.getnframes())
s = self.chain.filter(pcmToFloat(byteToPCM(data,wf.getsampwidth())))
ww.writeframes(bytes(floatToPCM(s)))
@Slot()
def onFilterEnableChange(self, i):
enabled = self.nodes[i].ctrls[0].isChecked()
if enabled:
ftype = self.nodes[i].ctrls[1].currentIndex()
self.updateControls(i, ftype)
self.adjustSliderRange(i, ftype)
self.updateSliderLabel(i)
else:
self.nodes[i].setControlsEnabled(False)
self.chain.setFiltEnabled(i, enabled)
self.plotwin.updateHandles()
self.updateChainTF()
@Slot()
def paramChanged(self, i, param, val):
self.updateFilter(i, param, val)
self.updateChainTF()
self.plotwin.updateHandles()
@Slot()
def focusChanged(self, old, new):
if new is not None:
for node in self.nodes:
if node.indexOf(new) != -1:
self.plotwin.focused = node.index
self.plotwin.update()
def updateControls(self, i, ftype):
node = self.nodes[i]
node.setControlsEnabled(True)
if ftype == FilterType.LPBrickwall or ftype == FilterType.HPBrickwall:
node.setControlEnabled(3,False)
node.setControlEnabled(4,False)
elif ftype == FilterType.LPButter or ftype == FilterType.HPButter:
node.setControlEnabled(3,False)
def updateFilter(self, i, param, val):
oldf = self.chain._filters[i]
type = oldf._type
fc = oldf._fc
g = oldf._g
Q = oldf._Q
if param == Params.TYPE:
type = val
Q = 1
elif param == Params.F:
fc = int(self.nodes[i].ctrls[2].text()) * 2 / fs
elif param == Params.G:
g = float(self.nodes[i].ctrls[3].text())
elif param == Params.Q:
if type == FilterType.LPButter or type == FilterType.HPButter:
Q = val
elif type == FilterType.Peak:
Q = val / 10
elif type == FilterType.LShelving or FilterType.HShelving:
Q = val / 100
self.chain.updateFilt(i, Filter(type, fc, g, Q))
if param == Params.TYPE:
self.updateControls(i, type)
self.adjustSliderRange(i, type)
self.updateSliderLabel(i)
def adjustSliderRange(self, index, type):
slider = self.nodes[index].ctrls[4]
if slider.isEnabled() == False:
return
Q = self.chain._filters[index]._Q
if type == FilterType.HPButter or type == FilterType.LPButter:
slider.setRange(1, 3)
slider.setValue(Q)
elif type == FilterType.Peak:
slider.setRange(1, 300)
slider.setValue(Q * 10)
elif type == FilterType.LShelving or type == FilterType.HShelving:
slider.setRange(10, 100)
slider.setValue(Q * 100)
def updateSliderLabel(self, index):
slider = self.nodes[index].ctrls[4]
if slider.isEnabled() == False:
return
type = self.chain._filters[index]._type
Q = self.chain._filters[index]._Q
if type == FilterType.HPButter or type == FilterType.LPButter:
text = str(2 ** Q * 6) + ' dB/oct'
else:
text = str(Q)
self.nodes[index].slider_label.setText(text)
def openStream(self):
wf = self.wf
frate = wf.getframerate()
sampw = wf.getsampwidth()
nchan = wf.getnchannels()
def callback(in_data, frame_count, time_info, status):
data = wf.readframes(frame_count)
if type(data) == type(''):
data = str.encode(data)
if len(data) < frame_count * sampw * nchan:
if self.loop_box.isChecked():
wf.rewind()
data = b''.join([data,
wf.readframes(frame_count - int(len(data) / (sampw * nchan)))])
self.chain.reset()
elif len(data) == 0:
return data, pyaudio.paComplete
filtered = self.chain.filter(pcmToFloat(byteToPCM(data,sampw)))
self.plotwin.updateSpectrum(np.fft.rfft(filtered))
return bytes(floatToPCM(filtered)), pyaudio.paContinue
chunk_size = np.int(frate / self.plotwin.refresh_rate)
self.stream = pya.open(format = pya.get_format_from_width(wf.getsampwidth()),
channels = wf.getnchannels(),
rate = frate,
frames_per_buffer = chunk_size,
output = True,
stream_callback = callback)
self.chain.reset()
def updateChainTF(self):
w, H = sosfreqz(self.chain.sos(), self.plotwin.wor)
self.plotwin.TFcurv.setData(w * 0.5 / np.pi * fs, 20 * np.log10(np.abs(H) + eps))
self.plotwin.update()
def scrape(data):
us_apps_filter = Filter(
field='app_store_url',
op=operator.contains,
value='/us/'
)
filter_chain = FilterChain()
filter_chain.add_filter(us_apps_filter)
us_apps = filter_chain.filter(data)
gathered_data = gather_data(us_apps)
spanish_and_tagalog_filter = ListContainedinListFilter(
field='languages',
op=operator.contains,
value=[u'Spanish', u'Tagalog']
)
filter_chain = FilterChain()
filter_chain.add_filter(spanish_and_tagalog_filter)
spanish_and_tagalog_data = filter_chain.filter(gathered_data)
insta_in_name_filter = CaseInsensitiveStringFilter(
field='name',
op=operator.contains,
value='insta'
)
filter_chain = FilterChain()
filter_chain.add_filter(insta_in_name_filter)
insta_in_name_data = filter_chain.filter(gathered_data)
filtered_data = {
'apps_in_spanish_and_tagalog': [_d.get('app_identifier') for _d in spanish_and_tagalog_data],
'apps_with_insta_in_name': [_d.get('app_identifier') for _d in insta_in_name_data]
}
write_json_to_file(filtered_data, 'filtered_apps.json')
write_json_to_file(gathered_data, 'apps.json')
def _make(images, scene_duration, dir, ffmpeg, width, height, audio, effect, transition, batch_mode):
# exit if no images were found
if bool(images) == False:
return None
scene_duration_f = scene_duration * FPS
w = width/2*2 if width != None else -2 if height != None else OUTPUT_VIDEO_WIDTH
h = height/2*2 if height != None else -2 if width != None else OUTPUT_VIDEO_HEIGHT
# build the animation dictionary of filters and first slide handling flag
animations = {
"zoompan": (
CombiningFilter(
[
ZoompanEffectFilter(maxzoom = MAX_ZOOM, frames = scene_duration_f),
ImageSlideFilter(duration = scene_duration, width = w, height = h)
],
outstreamprefix = "zpaf"),
False
),
"fadeinout": (
CombiningFilter([
FadeTransitionFilter(transition_duration = TRANSITION_T, total_duration = scene_duration),
ImageSlideFilter(duration = scene_duration, width = w, height = h)
],
outstreamprefix = "faf"),
False
),
"zoompanfadeinout": (
CombiningFilter(
[
ZoompanEffectFilter(maxzoom = MAX_ZOOM, frames = scene_duration_f),
FadeTransitionFilter(transition_duration = TRANSITION_T, total_duration = scene_duration),
ImageSlideFilter(duration = scene_duration, width = w, height = h)
],
outstreamprefix = "zpfaf"),
False
),
"slidein": (
FilterChain(
[
ImageSlideFilter(duration = scene_duration, width = w, height = h),
SlideTransitionFilter(transition_duration = TRANSITION_T, preserve_first = batch_mode != BatchMode.non_initial_batch)
]),
True
),
"zoompanslidein": (
ZoompanSlideInTransitionFilter(transition_duration = TRANSITION_T, total_duration = scene_duration, fps = FPS, width = w, height = h, maxzoom = MAX_ZOOM, preserve_first = batch_mode != BatchMode.non_initial_batch),
True
)
}
animationkey = (effect if effect else "") + (transition if transition else "")
animation = animations[animationkey] if animationkey in animations else None
# determines if transition is requested and how to interpret the inputs list
preserve_first_slide = animation[1] if animation else False
if batch_mode != BatchMode.non_initial_batch:
slides = images
lenght_t = scene_duration * len(slides)
elif preserve_first_slide:
slides = images
lenght_t = scene_duration * (len(slides) - 1)
else:
slides = images[1:]
lenght_t = scene_duration * len(slides)
inputs = OrderedDict([(i, "-loop 1") for i in slides])
# create the video filter chain
videoseq = FilterChain()
if animation:
videoseq.append(animation[0])
else:
videoseq.append(ImageSlideFilter(duration = scene_duration, width = w, height = h))
videoseq.append(ConcatFilter(True, "video"))
applied_filters = videoseq.generate(["%d:v" % i for (i,x) in enumerate(inputs)])[0]
# load audio track if requested
if audio == True:
audio_track = _get_audio(lenght_t, dir)
# build the filter chain and execute it
audioseq = FilterChain([
ReplicateAudioFilter(repetitions = int(math.ceil(lenght_t / float(audio_track[1])))),
ConcatFilter(is_video = False, outputtag = "caf"),
TrimAudioFilter(length = lenght_t),
FadeOutAudioFilter(start = lenght_t-AUDIO_FADE_OUT_T, length = AUDIO_FADE_OUT_T, outstreamprefix="audio")
])
applied_filters += audioseq.generate(["%d:a" % len(inputs)])[0]
# add the audio track to the inputs collection
inputs.update({audio_track[0]: None})
# build the video
output = "video.mp4"
output = dir + "/" + output if dir else output
ff = FFmpeg(
executable = ffmpeg,
global_options = ["-y"],
inputs = inputs,
outputs = {output: "-filter_complex \"" + ";".join(applied_filters) + "\" -map \"[video]\"" + (" -map \"[audio]\"" if audio == True else "") + " -c:v libx264 -pix_fmt yuvj420p -q:v 1"}
)
#print ff.cmd
ff.run()
return output
