本文整理汇总了Python中gi.repository.Gst.caps_from_string方法的典型用法代码示例。如果您正苦于以下问题：Python Gst.caps_from_string方法的具体用法？Python Gst.caps_from_string怎么用？Python Gst.caps_from_string使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类gi.repository.Gst的用法示例。
在下文中一共展示了Gst.caps_from_string方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: _gst_init
# 需要导入模块: from gi.repository import Gst [as 别名]
# 或者: from gi.repository.Gst import caps_from_string [as 别名]
def _gst_init(self):
# self._appsink will receive the buffers so we can upload them to GPU
self._appsink = Gst.ElementFactory.make('appsink', '')
self._appsink.props.caps = Gst.caps_from_string(
'video/x-raw,format=RGB')
self._appsink.props.async = True
self._appsink.props.drop = True
self._appsink.props.qos = True
self._appsink.props.emit_signals = True
self._appsink.connect('new-sample', partial(
_gst_new_buffer, ref(self)))
# playbin, takes care of all, loading, playing, etc.
self._playbin = Gst.ElementFactory.make('playbin', 'playbin')
self._playbin.props.video_sink = self._appsink
# gstreamer bus, to attach and listen to gst messages
self._bus = self._playbin.get_bus()
self._bus.add_signal_watch()
self._bus.connect('message', _on_gst_message)
self._bus.connect('message::eos', partial(
_on_gst_eos, ref(self))) 示例2: _create_main_pipeline
# 需要导入模块: from gi.repository import Gst [as 别名]
# 或者: from gi.repository.Gst import caps_from_string [as 别名]
def _create_main_pipeline(self, device, size, fps, sync):
self.pipeline = Gst.Pipeline()
self.source = Gst.ElementFactory.make('v4l2src', 'source')
self.source.set_property('device', device)
self.source.set_property('do-timestamp', 'true')
# run 'v4l2-ctl --list-ctrls' for full list of controls
struct, _ = Gst.structure_from_string('name,\
white_balance_temperature_auto=(bool){0},\
backlight_compensation=(int){0},\
exposure_auto=0,\
focus_auto=(bool){0}')
self.source.set_property('extra-controls', struct)
caps = Gst.caps_from_string('video/x-raw,format=(string){BGR},width=%d,height=%d,framerate=%d/1'%(size[1], size[0], fps))
self.sink = Gst.ElementFactory.make('appsink', 'sink')
self.sink.set_property('emit-signals', True)
self.sink.set_property('sync', sync)
self.sink.set_property('drop', True)
self.sink.set_property('max-buffers', 1)
self.sink.set_property('caps', caps)
self.sink.emit('pull-preroll')
self.pipeline.add(self.source)
self.pipeline.add(self.sink)
Gst.Element.link(self.source, self.sink) 示例3: init_request
# 需要导入模块: from gi.repository import Gst [as 别名]
# 或者: from gi.repository.Gst import caps_from_string [as 别名]
def init_request(self, id, caps_str):
self.request_id = id
logger.info("%s: Initializing request" % (self.request_id))
if caps_str and len(caps_str) > 0:
logger.info("%s: Setting caps to %s" % (self.request_id, caps_str))
caps = Gst.caps_from_string(caps_str)
self.appsrc.set_property("caps", caps)
else:
#caps = Gst.caps_from_string("")
self.appsrc.set_property("caps", None)
#self.pipeline.set_state(Gst.State.READY)
pass
#self.appsrc.set_state(Gst.State.PAUSED)
if self.outdir:
self.pipeline.set_state(Gst.State.PAUSED)
self.filesink.set_state(Gst.State.NULL)
self.filesink.set_property('location', "%s/%s.raw" % (self.outdir, id))
self.filesink.set_state(Gst.State.PLAYING)
#self.filesink.set_state(Gst.State.PLAYING)
#self.decodebin.set_state(Gst.State.PLAYING)
self.pipeline.set_state(Gst.State.PLAYING)
self.filesink.set_state(Gst.State.PLAYING)
# push empty buffer (to avoid hang on client diconnect)
#buf = Gst.Buffer.new_allocate(None, 0, None)
#self.appsrc.emit("push-buffer", buf)
# reset adaptation state
self.set_adaptation_state("") 示例4: init_request
# 需要导入模块: from gi.repository import Gst [as 别名]
# 或者: from gi.repository.Gst import caps_from_string [as 别名]
def init_request(self, id, caps_str):
self.request_id = id
if caps_str and len(caps_str) > 0:
logger.info("%s: Setting caps to %s" % (self.request_id, caps_str))
caps = Gst.caps_from_string(caps_str)
self.appsrc.set_property("caps", caps)
else:
#caps = Gst.caps_from_string(None)
self.appsrc.set_property("caps", None)
#self.pipeline.set_state(Gst.State.READY)
pass
#self.appsrc.set_state(Gst.State.PAUSED)
if self.outdir:
self.pipeline.set_state(Gst.State.PAUSED)
self.filesink.set_state(Gst.State.NULL)
self.filesink.set_property('location', "%s/%s.raw" % (self.outdir, id))
self.filesink.set_state(Gst.State.PLAYING)
#self.filesink.set_state(Gst.State.PLAYING)
#self.decodebin.set_state(Gst.State.PLAYING)
self.pipeline.set_state(Gst.State.PLAYING)
self.filesink.set_state(Gst.State.PLAYING)
# push empty buffer (to avoid hang on client diconnect)
buf = Gst.Buffer.new_allocate(None, 0, None)
self.appsrc.emit("push-buffer", buf)
logger.info('%s: Pipeline initialized' % (self.request_id))