gmyth: gmyth-stream/server/0.1/plugins/media/gstreamer.py@b27d653ff6f1

     1 #vim:ts=4:sw=4:et

     2 import pygst

     3 pygst.require("0.10")

     4 import gst

     5 import gobject

     6 import socket

     7 import time

     8 from threading import Thread

    10 class Media:

    11     class StreamListener(Thread):

    12         def __init__ (self, stream_data):

    13             Thread.__init__(self)

    14             self.stream = stream_data

    15             print "Thread Created"

    17         def run (self):

    18             #Create socket

    19             print "Waiting connection"

    20             self.stream.Socket.listen(1)

    21             self.stream.Connection, self.stream.Addr = self.stream.Socket.accept ()

    22             print "Connection requested"

    23             self.stream.Sink.set_property ("fd", self.stream.Connection.fileno())

    24             self.stream.Pipe.set_state(gst.STATE_PLAYING)

    25             print "PLAYING"

    28     class StreamData:

    29         stream_count = 0

    31         def __init__ (self, pipe, abin, vbin, sink):

    32             self.stream_count += 1

    33             self.Id = self.stream_count

    34             self.Pipe = pipe

    35             self.Abin = abin

    36             self.Vbin = vbin

    37             self.Sink = sink

    38             self.Loop = gobject.MainLoop()

    39             self.ACaps = ""

    40             self.VCaps = ""

    41             self.Ready = False

    42             self.Socket = None

    43             self.Connection = None

    44             self.Addr = None

    46     def __init__(self, config):

    47         # set gstreamer basic options

    48         self.config = config

    49         self.streams = []

    50         self.socket = None

    51         self.connection = None

    52         self.addr = None

    53         self.ready = False

    54 		self.current = None

    57     def setup(self, uri, mux, vcodec, vbitrate,

    58               fps, acodec, abitrate, width, height, port, options):

    60         ## Pipelines

    61         pipe = gst.Pipeline ()

    62         print "Opening Uri:" + uri

    63         src = gst.element_make_from_uri (gst.URI_SRC, uri, "src")

    64         #src = gst.element_factory_make ("gnomevfssrc", "src")

    65         src.set_property ("location", uri)

    66         if (src is None):

    67             print "Fail to create src element"

    68             return None

    70         print ("Create source")

    71         decode = gst.element_factory_make ("decodebin", "decode")

    72         if (decode is None):

    73             print "Fail to create decodebin"

    74             return None

    76         print ("Create source")

    77         mux = gst.element_factory_make ("avimux", "mux")

    78         if (mux is None):

    79             print "Fail to create mux"

    80             return None

    82         sink = gst.element_factory_make ("fdsink", "sink")

    83         if (sink is None):

    84             print "Fail to create fdsink"

    85             return None

    87         print ("Create source")

    89         #video encode

    90         #queue ! videoscale ! video/x-raw-yuv,width=240,height=144 ! videorate ! ffenc_h263p bitrate=256000 me-method=2 ! rtph263ppay ! udpsink  host=224.0.0.1 port=5000

    91         vbin = gst.Bin ()

    92         vqueue = gst.element_factory_make ("queue", "vqueue")

    93         colorspace = gst.element_factory_make ("ffmpegcolorspace", "")

    94         vrate = gst.element_factory_make ("videorate", "vrate")

    95         vencode = gst.element_factory_make ("ffenc_mpeg4", "vencode")

    96         #vencode = gst.element_factory_make ("ffenc_msmpeg4v1", "vencode")

    97         vqueue_src = gst.element_factory_make ("queue", "vqueue_src")

    99         #if (int(vbitrate) > 0):

   100         vencode.set_property ("bitrate", 200)

   101         #vencode.set_property ("quant-type", 1)

   102         vencode.set_property ("pass", 2)

   103         vencode.set_property ("quantizer", 5)

   104         #vencode.set_property ("me-method", 1)

   107         if (None in [vbin, vqueue, vrate, vencode, vqueue_src]):

   108             print "Fail to create video encode elements."

   109             return None

   111         vbin.add (vqueue)

   112         if ((int(width) > 0) and (int(height) > 0)):

   113             print ("formating output to %d / %d" % (int(width), int(height)))

   115             vscale = gst.element_factory_make ("ffvideoscale", "vscale")

   117             vbin.add (vscale);

   118             if (not vqueue.link (vscale)):

   119                 print "Fail to link video elements"

   120                 return None

   122             vbin.add (colorspace)

   124             if (not vscale.link (colorspace, \

   125                 gst.caps_from_string ("video/x-raw-yuv,width=(int)%d,height=(int)%d" % (int(width), int(height))))):

   126                 print "Fail to link video elements"

   127                 return None

   128         else:

   129             vbin.add (colorspace)

   130             vqueue.link (colorspace)

   132         vbin.add (vrate, vencode, vqueue_src)

   133         if (not colorspace.link (vrate)):

   134             print "Fail to colorspace with vrate"

   135             return None

   138         if (not vrate.link (vencode, \

   139             gst.caps_from_string ("video/x-raw-yuv,framerate=(fraction)10/1"))):

   140             print "Fail to link vrate element"

   141             return None

   143         if (not vencode.link (vqueue_src)):

   144             print "Fail to link video encode with queue"

   145             return None

   147         vbin.add_pad (gst.GhostPad ("sink", vqueue.get_pad ("sink")))

   148         vbin.add_pad (gst.GhostPad ("src", vqueue_src.get_pad ("src")))

   150         #audio encode

   151         #audio/x-raw-int ! queue ! audioconvert ! faac ! rtpmp4gpay !  udpsink name=upd_audio host=224.0.0.1 port=5002

   152         abin = gst.Bin ()

   153         aqueue = gst.element_factory_make ("queue", "aqueue")

   154         aconvert = gst.element_factory_make ("audioconvert", "aconvert")

   155         arate = gst.element_factory_make ("audioresample", "arate")

   156         #aencode = gst.element_factory_make ("ffenc_ac3", "aencode")

   157         aencode = gst.element_factory_make ("queue", "aencode")

   158         #aencode = gst.element_factory_make ("lame", "aencode")

   159         #aencode = gst.element_factory_make ("ffenc_mp2", "aencode")

   160         aqueue_src = gst.element_factory_make ("queue", "aqueue_src")

   162         if (None in [abin, aqueue, arate, aencode, aqueue_src]):

   163             print "Fail to create video encode elements."

   164             return None

   166         abin.add (aqueue, aconvert, arate, aencode, aqueue_src)

   167         if (not gst.element_link_many (aqueue,  aconvert, arate, aencode, aqueue_src)):

   168             print "Fail to link video elements"

   169             return None

   171         abin.add_pad (gst.GhostPad ("sink", aqueue.get_pad ("sink")))

   172         abin.add_pad (gst.GhostPad ("src", aqueue_src.get_pad ("src")))

   174         #Finish Pipeline

   175         pipe.add (src, decode, abin, vbin, mux, sink)

   176         gst.element_link_many (src, decode)

   177         gst.element_link_many (mux, sink)

   179         #Linking decode with mux

   180         mux_audio = mux.get_pad ("audio_0")

   181         mux_video = mux.get_pad ("video_0")

   183         audio_pad = abin.get_pad ("src")

   184         video_pad = vbin.get_pad ("src")

   186         if (audio_pad.link (mux_audio) != gst.PAD_LINK_OK):

   187             print "Fail to link audio with mux"

   188             return None

   190         if (video_pad.link (mux_video) != gst.PAD_LINK_OK):

   191             print "Fail to link audio with mux"

   192             return None

   194         stream_data = self.StreamData (pipe, abin, vbin, sink)

   195         bus = pipe.get_bus()

   196         bus.add_signal_watch()

   197         bus.connect ("message", self.__on_bus_message, stream_data)

   199         decode.connect("new-decoded-pad", self.__on_decode_new_pad, stream_data)

   200         decode.connect("unknown-type", self.__on_decode_unknown_type, stream_data)

   202         print ("Create source")

   203         pipe.set_state (gst.STATE_PAUSED)

   204         print "Running Pipe"

   205         stream_data.Loop.run ()

   206         print "End run"

   209         #Create socket

   210         stream_data.Socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

   211         print "Bind on port %d" % port

   212         stream_data.Socket.bind(('', int (port)))

   213         self.streams.append (stream_data)

   214         return (True, "")

   216     def play(self):

   217         print "Play"

   218         stream = self.streams[0]

   219         self.current = self.StreamListener(stream)

   220         self.current.start ()

   221         time.sleep (1)

   222         return (True, "")

   224     def stop(self):

   225 		self.current.join ()

   226         self.current = None

   227         stream = self.streams[0]

   228         stream.Pipe.set_state(gst.STATE_NULL)

   229         del (stream.Pipe)

   230         stream.Pipe = None

   231         stream.Abin = None

   232         stream.Vbin = None

   233         stream.Sink = None

   234 		if (stream.Connection != None):

   235 	        stream.Connection.close ()

   237         self.streams = []

   238         time.sleep (5)

   239         return (True, "")

   242     def __on_bus_message (self, bus, message, stream_data):

   244         t = message.type

   245         if (t == gst.MESSAGE_STATE_CHANGED):

   246             oldstate = -1

   247             newstate = -1

   248             pending = -1

   249             oldstate, newstate, pending = message.parse_state_changed ()

   250             if ((oldstate == gst.STATE_READY) and \

   251                 (newstate == gst.STATE_PAUSED) and \

   252                 (pending == gst.STATE_VOID_PENDING) and \

   253                 (stream_data.Ready == False)):

   254                 state_changed_status, current_state, pending_state = stream_data.Pipe.get_state ()

   255                 if ((current_state == gst.STATE_PAUSED) and \

   256                     (pending_state == gst.STATE_VOID_PENDING)):

   257                     print "Pipe paused"

   258                     stream_data.Loop.quit ()

   259                     stream_data.Ready = True

   260         elif (t == gst.MESSAGE_ERROR):

   261             err, debug = message.parse_error()

   262             print "Error: %s" % err, debug

   263             stream_data.Loop.quit ()

   264             stream_data.Ready = False

   266         return True

   268     def __on_decode_unknown_type (self, decode, pad, caps, stream_data):

   270         print "Unknown Type"

   271         return None

   273     def __on_decode_new_pad (self, decode, pad, arg1, stream_data):

   275         caps = pad.get_caps().to_string()

   276         print "New pad " + caps

   277         if (caps.rfind ("audio") != -1):

   278             apad = stream_data.Abin.get_pad ("sink")

   279             if (pad.link (apad) != gst.PAD_LINK_OK):

   280                 print "Error on link audio pad"

   281                 return None

   282         elif (caps.rfind ("video") != -1):

   283             vpad = stream_data.Vbin.get_pad ("sink")

   284             if (pad.link (vpad) != gst.PAD_LINK_OK):

   285                 print "Error on link video pad"

   286                 return None

   287         else:

   288             print "Invalid caps"

   289         print "Linked"

author	rosfran
	Fri May 18 22:45:49 2007 +0100 (2007-05-18)
branch	trunk
changeset 694	b27d653ff6f1
permissions	-rw-r--r--