def music_delivery(self, session, frames, frame_size, num_frames,
sample_type, sample_rate, channels):
"""Callback used by pyspotify"""
# pylint: disable = R0913
# Too many arguments (8/5)
assert sample_type == 0, 'Expects 16-bit signed integer samples'
capabilites = """
audio/x-raw-int,
endianness=(int)1234,
channels=(int)%(channels)d,
width=(int)16,
depth=(int)16,
signed=(boolean)true,
rate=(int)%(sample_rate)d
""" % {
'sample_rate': sample_rate,
'channels': channels,
}
buffer_ = gst.Buffer(bytes(frames))
buffer_.set_caps(gst.caps_from_string(capabilites))
if self.audio.emit_data(buffer_).get():
return num_frames
else:
return 0
def do_create(self, offset, length):
depth, timestamp = freenect.sync_get_depth()
databuf = numpy.getbuffer(depth)
self.buf = gst.Buffer(databuf)
self.buf.timestamp = 0
self.buf.duration = pow(2, 63) -1
return gst.FLOW_OK, self.buf
def chainfunc(self, pad, buffer):
if self.proxy:
# we are in proxy mode already
self.srcpad.push(buffer)
return gst.FLOW_OK
self.buffer = self.buffer + buffer.data
if not self.buffer_size:
try:
self.buffer_size, a_type = struct.unpack(
">L4s", self.buffer[:8])
except:
return gst.FLOW_OK
if len(self.buffer) < self.buffer_size:
# we need to buffer more
return gst.FLOW_OK
buffer = self.buffer[self.buffer_size:]
fake_header = self.get_fake_header()
n_buf = gst.Buffer(fake_header + buffer)
self.proxy = True
self.srcpad.push(n_buf)
return gst.FLOW_OK
def chainfunc(self, pad, buffer):
try:
print 'Got resize buffer'
# Simplest: just propagate the data
# self.srcpad.push(buffer)
# Import into PIL and downsize it
# Raw jpeg to pr0n PIL wrapper object
print 'resize chain', len(buffer.data), len(buffer.data) / 3264.0
#open('temp.jpg', 'w').write(buffer.data)
#io = StringIO.StringIO(buffer.data)
io = StringIO.StringIO(str(buffer))
try:
image = Image.open(io)
except:
print 'failed to create image'
return gst.FLOW_OK
# Use a fast filter since this is realtime
image = get_scaled(image, 0.5, Image.NEAREST)
output = StringIO.StringIO()
image.save(output, 'jpeg')
self.srcpad.push(gst.Buffer(output.getvalue()))
except:
traceback.print_exc()
os._exit(1)
return gst.FLOW_OK
def on_audneeddata(self, element, length):
#if self.timestamp is None:
# return
#ts = element.get_clock().get_time() - element.get_base_time()
#audbuffer = self.buffer
# print [e.get_caps().to_string() for e in element.src_pads()]
#print element.get_property('caps')
#print 'length needed: ', length
#print 'abuffer len: ', len(audbuffer)
#if len(audbuffer) < length / 4:
# return
#with self.buffer_lock:
tcbuf = array.array('h', self.tcgen.build_audio_data())
#tcbuf = self.get_samples_from_buffer(length / 2)
if False: #tcbuf is False:
print 'BUFFER EMPTY!!!'
#element.emit('end-of-stream')
#return
tcbuf = array.array('h', [0] * (length / 2))
tcstr = tcbuf.tostring()
buffer = gst.Buffer(tcstr)
#tcgen = self.tcgen
#buffer.duration = long((tcgen.samplerate / float(length / 2)) * (10 ** 9))
#buffer.timestamp = gst.CLOCK_TIME_NONE
#buffer.set_caps(self.asrccaps.copy())
#buffer.timestamp = self.timestamp
#self.timestamp = None
#print 'appsrc ts: ', buffer.timestamp
#buffer.timestamp = element.get_clock().get_time()
#print 'buffer: ', len(tcstr)
#print 'new abuffer len: ', len(audbuffer)
result = element.emit('push-buffer', buffer)
def startVid(self):
gobject.threads_init()
video = Frame(self, background='black')
video.grid(row=0, column=0, columnspan=8, rowspan=4, padx=2, sticky=E+W+S+N)
window_id = video.winfo_id()
self.buf = gst.Buffer()
self.bin = gst.Bin("my-bin")
timeoverlay = gst.element_factory_make("timeoverlay", "overlay")
self.bin.add(timeoverlay)
pad = timeoverlay.get_pad("video_sink")
ghostpad = gst.GhostPad("sink", pad)
self.bin.add_pad(ghostpad)
videosink = gst.element_factory_make("ximagesink")
self.bin.add(videosink)
gst.element_link_many(timeoverlay, videosink)
self.player.set_property('video-sink', self.bin)
self.player.set_property('uri', 'file://%s' % (os.path.abspath(self.project.videoPath)))
bus = self.player.get_bus()
bus.add_signal_watch()
bus.enable_sync_message_emission()
bus.connect("message", self.on_message, window_id)
bus.connect('sync-message::element', self.on_sync_message, window_id)
self.play.configure(command=lambda: self.play_video())
self.back.configure(command=self.play_back)
def do_create(self, offset, size):
size = 4096 * 2**4
if self._data and offset < self._data_len:
blob = self._data[offset:offset+size]
return gst.FLOW_OK, gst.Buffer(blob)
else:
return gst.FLOW_UNEXPECTED, None
def _finish_fragment(self, timestamp, index):
# Write streamheaders at the beginning of each fragment
s = self.sinkpad.get_negotiated_caps()[0]
frag = []
if s.has_field('streamheader'):
frag = list(s['streamheader'])
frag.extend(self._fragment)
# Check for discontinuities
if self._last_event_ts == gst.CLOCK_TIME_NONE or\
timestamp <= self._last_event_ts:
self._reset_fragment(timestamp)
self._last_fragment = None
return
# Create the GstBuffer
data = ''.join([b.data for b in frag])
buf = gst.Buffer(data)
buf.timestamp = self._last_event_ts
buf.duration = timestamp - buf.timestamp
if self._in_caps:
buf.flag_set(gst.BUFFER_FLAG_IN_CAPS)
# Create the GstFragment and emit the new-fragment signal
self._last_fragment = Fragment(index, buf)
self.emit('new-fragment')
self._reset_fragment(timestamp)
def do_create(self, offset, length):
rgb, timestamp = freenect.sync_get_video()
databuf = numpy.getbuffer(rgb.view(numpy.uint8))
self.buf = gst.Buffer(databuf)
self.buf.timestamp = 0
self.buf.duration = pow(2, 63) - 1
return gst.FLOW_OK, self.buf
def srcpad_get(self, pad):
data = self.fd.read(self.blocksize)
if data:
return gst.Buffer(data)
else:
self.set_eos()
return gst.Event(gst.EVENT_EOS)
def filter_buffer(self, buffer_in, **kwargs):
# TODO: lock?
kwargs['environ'] = dict(os.environ)
kwargs['input_frame_filename'] = self.tempfile_png_in.name
kwargs.update(
self.reader.get_data_for_time(kwargs['video_stream_position']))
self.tempfile_png_in.seek(0)
self.tempfile_png_in.truncate()
self.tempfile_png_in.write(buffer_in)
self.tempfile_png_in.flush()
self.tempfile_svg.seek(0)
self.tempfile_svg.truncate()
self.tempfile_svg.write(self.svg_template.generate(**kwargs).render())
self.tempfile_svg.flush()
subprocess.check_call([
'rsvg',
'-w',
kwargs['video_width'],
'-h',
kwargs['video_height'],
self.tempfile_svg.name,
self.tempfile_png_out.name,
])
self.tempfile_png_out.seek(0)
buffer_out = gst.Buffer(self.tempfile_png_out.read())
buffer_out.caps = buffer_in.caps
buffer_out.timestamp = buffer_in.timestamp
buffer_out.duration = buffer_in.duration
return buffer_out
def push_data(data):
num_samples = CHUNK_SIZE /2 # Because each sample is 16 bits
#Generate some psychodelic waveforms
data.c += data.d
data.d -= data.c / 1000.0
freq = 1100.0 + 1000.0*data.d
raw = array('H')
for i in xrange(num_samples):
data.a += data.b
data.b -= data.a/freq
a5 = (int(500 * data.a))% 65535
raw.append(a5)
data.num_samples += num_samples
buffer = gst.Buffer(raw.tostring())
#Set its timestamp and duration
buffer.timestamp = gst.util_uint64_scale(data.num_samples, gst.SECOND, SAMPLE_RATE)
buffer.duration = gst.util_uint64_scale(CHUNK_SIZE, gst.SECOND, SAMPLE_RATE)
#Push the buffer into the appsrc
ret = data.app_source.emit("push-buffer", buffer)
if (ret != gst.FLOW_OK):
return False
return True
def write(self, block):
if not self.playing:
self.playing = True
self.log.debug('pure vlc output is starting')
self.player.set_state(gst.STATE_PLAYING)
# self.proto.sendData(block)
self.appsink.emit('push-buffer', gst.Buffer(block))
def do_create(self, offset, size):
#debug("Offset: %d, Size: %d" % (offset, size))
try:
while True:
status, buffer = self._receiver.queue.get(True, 5)
if self.seek_in_progress is not None:
if status != 1: # change this
debug("Skipping prefetched junk ...")
self._receiver.queue.task_done()
continue
debug("Pushing seek'd buffer")
event = gst.event_new_new_segment(False, 1.0,
gst.FORMAT_TIME,
self.seek_in_progress,
-1,
self.seek_in_progress)
r = self.get_static_pad("src").push_event(event)
debug("New segment: %s" % r)
self.seek_in_progress = None
buffer.flag_set(gst.BUFFER_FLAG_DISCONT)
self._receiver.queue.task_done()
return gst.FLOW_OK, buffer
except Queue.Empty:
debug("No data avilable")
return gst.FLOW_OK, gst.Buffer()
except:
traceback.print_exc()
return gst.FLOW_ERROR, None
def do_create(self, offset, length):
self.debug("Pushing buffer")
gstBuf = gst.Buffer(self.imgBuf)
padcaps = gst.caps_from_string(self.capsStr)
gstBuf.set_caps(padcaps)
gstBuf.timestamp = 0
gstBuf.duration = self.duration * gst.SECOND
return gst.FLOW_OK, gstBuf
def do_create(self, offset, size):
self.emit("packet_received")
assert self.audio
data = self.audio.read()
buf = gst.Buffer(data)
buf.set_caps(self.caps)
print "do_create", len(buf)
return gst.FLOW_OK, buf
def pushData(self, data, fragment_duration, level, caps_data):
buf = gst.Buffer(data)
buf.duration = long(fragment_duration * 1e9)
debug(DEBUG,
'%s pushData: pushed %s of data (duration= %.2fs) for level %s',
self, format_bytes(len(data)), fragment_duration, level)
self.pipeline.get_by_name('src').emit('push-buffer', buf)
del buf
def do_create(self, offset, size):
if offset != self.curoffset:
self.fd.seek(offset, 0)
data = self.fd.read(self.blocksize)
if data:
self.curoffset += len(data)
return gst.FLOW_OK, gst.Buffer(data)
else:
return gst.FLOW_UNEXPECTED, None
def set_uri(self, filepath):
import gst
logging.debug("Pushing %r to appsrc" % filepath)
# FIXME: BIG hack to reduce the initial starting time...
queue0 = self.decodebin.get_by_name("multiqueue0")
if queue0:
queue0.set_property("max-size-bytes", 100000)
f = open(filepath)
self.appsrc.emit('push-buffer', gst.Buffer(f.read()))
def chainfunc(self, pad, buffer):
gst.log("Passing buffer with ts %d" % (buffer.timestamp))
fft = numpy.frombuffer(buffer, numpy.complex128)
fft = fft * self.transmission
b = gst.Buffer(fft)
b.set_caps(self.srcpad.get_caps())
b.timestamp = buffer.timestamp
return self.srcpad.push(b)
def buf_of_img(img, bufmodel=None):
buf = gst.Buffer(img)
if bufmodel is not None:
buf.caps = bufmodel.caps
buf.duration = bufmodel.duration
buf.timestamp = bufmodel.timestamp
buf.offset = bufmodel.offset
buf.offset_end = bufmodel.offset_end
return buf
def on_audio_message(self, audio):
# Callback for ROS audio messages -- emits the audio data to the
# gstreamer pipeline through the appsrc.
rospy.logdebug('Received audio packet of length {}'.format(
len(audio.data)))
if self._app_source:
self._app_source.emit('push-buffer',
gst.Buffer(str(bytearray(audio.data))))
def feed_data(playbin, buffer_size):
print 'feeding data'
f = Progress.file()
# buffer = gst.Buffer('1'*4096)
buffer = gst.Buffer(f.read(4096))
playbin.emit('push-buffer', buffer)
Progress.set_progress(Progress.get_progress() + buffer_size)
def do_create(self, offset, size):
print " L"+unicode(self.buffer.qsize())+"",
try:
buff = self.buffer.get(False)
return gst.FLOW_OK, gst.Buffer(str(buff))
except:
return gst.FLOW_UNEXPECTED, None
def __init__(self, caps):
self.__gobject_init__()
self.caps = caps
values = [0 for a in numpy.arange(0.0, 12*math.pi, 0.06)]
data = struct.pack('<' + 'h'*len(values), *values)
self.buf = gst.Buffer(data)
caps = gst.caps_from_string('audio/x-raw-int, rate=8000, endianness=1234, channels=1, width=16, depth=16, signed=true')
self.buf.set_caps(caps)
def _pushPacket(self, data, timestamp, EOS, streamId):
if self.breakBlock:
return
if self.datatype not in ('b', 'B'):
# dataChar and dataOctet already provide data as string; all
# other formats require packing
format = self.datatype
data = struct.pack('%d%s' % (len(data), format), *data)
self.source.emit('push_buffer', gst.Buffer(data))
def handle(self, uris):
"""Do something useful with the URIs.
:param uris: list of URIs
:type uris: :type:`list`
:returns: boolean indicating if EOS should be consumed
"""
# TODO: handle unicode uris which we can get out of elementtree
self.srcpad.push(gst.Buffer('\n'.join(uris)))
return False
def chainfunc(self, pad, buffer):
gst.log("Passing buffer with ts %d" % (buffer.timestamp))
fft = numpy.frombuffer(buffer, numpy.complex128)
l = 2 * len(fft) - 2
data = numpy.fft.irfft(fft, l)
b = gst.Buffer(data)
b.set_caps(self.srcpad.get_caps())
b.timestamp = buffer.timestamp
return self.srcpad.push(b)
def do_create(self, offset, size):
hdr = self.of.read(hdr_len)
size, timestamp, duration, flags = struct.unpack(hdr_fmt, hdr)
buffer = gst.Buffer(self.of.read(size))
buffer.timestamp = timestamp
buffer.duration = duration
#buffer.flags = flags
print "buffer timestamp %d %d %d" % (buffer.timestamp, buffer.duration,
buffer.flags)
return gst.FLOW_OK, buffer
def add_snapshot(self, pixbuf, time_ms):
self.width = pixbuf.get_width()
self.height = pixbuf.get_height()
#print "Pushing %dx%d snapshot to source" % (self.width, self.height)
buf = gst.Buffer(pixbuf.get_pixels())
buf.timestamp = int(round(time_ms * gst.MSECOND))
# Don't forget to set the right caps on the buffer
self.set_caps_on(buf)
src = self.get_static_pad("src")
status = src.push(buf)
if status != gst.FLOW_OK:
raise RuntimeError, "Error while pushing buffer : " + str(status)
