root / py / scenic / streamer.py @ 07635ece
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# Scenic
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# Copyright (C) 2008 Société des arts technologiques (SAT)
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# http://www.sat.qc.ca
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# All rights reserved.
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#
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# This file is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# Scenic is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Scenic. If not, see <http://www.gnu.org/licenses/>.
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"""
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Manages local streamer processes. |
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"""
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from scenic import process |
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from scenic import sig |
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from scenic import dialogs |
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from scenic.internationalization import _ |
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class StreamerManager(object): |
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"""
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Manages local streamer processes. |
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""" |
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def __init__(self, app): |
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self.app = app
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self.sender = None |
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self.receiver = None |
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self.extra_sender = None # extra sender/receiver used only if not synchronized |
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self.extra_receiver = None |
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self.midi_receiver = None |
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self.midi_sender = None |
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self.state = process.STATE_STOPPED
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self.state_changed_signal = sig.Signal()
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# for stats
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self.session_details = None # either None or a big dict |
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self.rtcp_stats = None # either None or a big dict |
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self.error_messages = None # either None or a big dict |
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def _gather_config_to_stream(self, addr): |
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"""
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Gathers all settings in a big dict. |
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Useful for feedback to the user. |
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""" |
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contact_name = addr |
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contact = self.app._get_contact_by_addr(addr)
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if contact is not None: |
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contact_name = contact["name"]
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remote_config = self.app.remote_config # FIXME: should the remote config be passed as a param to this method? |
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send_width, send_height = self.app.config.video_capture_size.split("x") |
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receive_width, receive_height = remote_config["video"]["capture_size"].split("x") |
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# MIDI
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midi_send_enabled = self.app.config.midi_send_enabled and remote_config["midi"]["recv_enabled"] |
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midi_recv_enabled = self.app.config.midi_recv_enabled and remote_config["midi"]["send_enabled"] |
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midi_input_device = self.app.config.midi_input_device
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midi_output_device = self.app.config.midi_output_device
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audio_jitterbuffer = self.app.config.audio_jitterbuffer
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if self.app.config.audio_video_synchronized and self.app.config.video_recv_enabled: |
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audio_jitterbuffer = self.app.config.video_jitterbuffer
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print "remote_config:", remote_config |
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self.session_details = {
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"peer": {
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"address": addr,
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"name": contact_name,
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}, |
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# ----------------- send ---------------
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"send": {
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"video": {
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# Decided by both:
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"enabled": self.app.config.video_send_enabled and remote_config["video"]["recv_enabled"], |
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# Decided locally:
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"source": self.app.config.video_source, |
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"device": self.app.config.video_device, |
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"width": int(send_width), # int |
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"height": int(send_height), # int |
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"aspect-ratio": self.app.config.video_aspect_ratio, |
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# Decided by remote peer:
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"port": remote_config["video"]["port"], |
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"bitrate": remote_config["video"]["bitrate"], |
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"codec": remote_config["video"]["codec"], |
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}, |
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"audio": {
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# Decided by both:
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"enabled": self.app.config.audio_send_enabled and remote_config["audio"]["recv_enabled"], |
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# Decided locally:
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"source": self.app.config.audio_source, |
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"vumeter-id": self.app.gui.audio_levels_input_socket_id, |
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"buffer": self.app.config.audio_input_buffer, |
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# Decided by remote peer:
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"numchannels": remote_config["audio"]["numchannels"], |
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"codec": remote_config["audio"]["codec"], |
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"port": remote_config["audio"]["port"], |
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"synchronized": remote_config["audio"]["synchronized"], |
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}, |
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"midi": {
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"enabled": midi_send_enabled,
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"input_device": midi_input_device,
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"port": remote_config["midi"]["port"] |
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} |
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}, |
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# -------------------- recv ------------
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"receive": {
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"video": {
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# Decided by both:
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"enabled": self.app.config.video_recv_enabled and remote_config["video"]["send_enabled"], |
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# decided locally:
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"sink": self.app.config.video_sink, |
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"port": str(self.app.recv_video_port), #decided by the app |
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"codec": self.app.config.video_codec, |
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"deinterlace": self.app.config.video_deinterlace, # bool |
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"window-title": "\"From %s\"" % (contact_name), #TODO: i18n |
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"jitterbuffer": self.app.config.video_jitterbuffer, |
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"fullscreen": self.app.config.video_fullscreen, # bool |
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"display": self.app.config.video_display, |
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"bitrate": self.app.config.video_bitrate, # float |
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# Decided by remote peer:
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"aspect-ratio": remote_config["video"]["aspect_ratio"], |
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"width": int(receive_width), # int |
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"height": int(receive_height), # int |
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}, |
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"audio": {
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# Decided by both:
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"enabled": self.app.config.audio_recv_enabled and remote_config["audio"]["send_enabled"], |
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# decided locally:
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"numchannels": self.app.config.audio_channels, # int |
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"vumeter-id": self.app.gui.audio_levels_output_socket_id, |
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"codec": self.app.config.audio_codec, |
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"port": self.app.recv_audio_port, |
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"sink": self.app.config.audio_sink, |
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"buffer": self.app.config.audio_output_buffer, |
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"synchronized": self.app.config.audio_video_synchronized, |
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"jitterbuffer": audio_jitterbuffer
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}, |
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"midi": {
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"enabled": midi_recv_enabled,
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"jitterbuffer": self.app.config.midi_jitterbuffer, |
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"output_device": midi_output_device,
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"port": str(self.app.recv_midi_port), |
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} |
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} |
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} |
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if self.session_details["send"]["video"]["source"] != "v4l2src": |
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self.session_details["send"]["video"]["device"] = None |
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if self.session_details["send"]["video"]["codec"] == "theora": |
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self.session_details["send"]["video"]["bitrate"] = None |
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print(str(self.session_details)) |
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def _prepare_stats_and_errors_dicts(self): |
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# setting up
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self.rtcp_stats = {
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"send": {
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"video": {
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"packets-lost": 0, |
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"packets-sent": 0, |
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"packet-loss-percent": 0.0, |
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"jitter": 0, |
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"bitrate": None, |
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"connected": False |
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}, |
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"audio": {
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"packets-lost": 0, |
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"packets-sent": 0, |
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"packet-loss-percent": 0.0, |
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"jitter": 0, |
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"bitrate": None, |
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"connected": False |
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} |
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}, |
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"receive": {
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"video": {
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"connected": False, |
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"bitrate": None |
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}, |
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"audio": {
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"connected": False, |
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"bitrate": None |
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} |
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} |
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} |
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self.error_messages = {
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"send": [], # list of strings |
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"receive": [], # list of strings |
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} |
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def start(self, host): |
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"""
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Starts the sender and receiver processes. |
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@param host: str ip addr |
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Raises a RuntimeError if a sesison is already in progress. |
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""" |
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if self.state != process.STATE_STOPPED: |
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raise RuntimeError("Cannot start streamers since they are %s." % (self.state)) # the programmer has done something wrong if we're here. |
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self._gather_config_to_stream(host)
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details = self.session_details
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send_video_enabled = self.session_details["send"]["video"]["enabled"] |
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send_audio_enabled = self.session_details["send"]["audio"]["enabled"] |
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recv_video_enabled = self.session_details["receive"]["video"]["enabled"] |
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recv_audio_enabled = self.session_details["receive"]["audio"]["enabled"] |
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midi_recv_enabled = self.session_details["receive"]["midi"]["enabled"] |
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midi_send_enabled = self.session_details["send"]["midi"]["enabled"] |
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extra_send_enabled = not self.session_details["send"]["audio"]["synchronized"] and send_audio_enabled |
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extra_recv_enabled = not self.session_details["receive"]["audio"]["synchronized"] and recv_audio_enabled |
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normal_recv_enabled = recv_video_enabled or recv_audio_enabled and not extra_recv_enabled # if the self.sender and self.receiver are enabled |
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normal_send_enabled = send_video_enabled or send_audio_enabled and not extra_send_enabled |
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if not send_audio_enabled and not send_video_enabled and not midi_send_enabled and not midi_recv_enabled and not recv_audio_enabled and not recv_video_enabled: |
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raise RuntimeError("Everything is disabled, but the application is trying to start to stream. This should not happen.") # the programmer has done a mistake if we're here. |
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print "send_video_enabled", send_video_enabled |
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print "send_audio_enabled", send_audio_enabled |
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print "recv_video_enabled", recv_video_enabled |
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print "recv_audio_enabled", recv_audio_enabled |
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print "midi_recv_enabled", midi_recv_enabled |
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print "midi_send_enabled", midi_send_enabled |
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# we store the arguments in lists
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milhouse_send_cmd_common = [] |
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milhouse_send_cmd_audio = [] |
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milhouse_send_cmd_video = [] |
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milhouse_recv_cmd_common = [] |
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milhouse_recv_cmd_audio = [] |
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milhouse_recv_cmd_video = [] |
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# ------------------ send ---------------
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# every element in the lists must be strings since we join them .
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# int elements are converted to str.
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milhouse_send_cmd_common.extend([ |
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"milhouse",
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'--sender',
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'--address', details["peer"]["address"] |
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]) |
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# send video:
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if send_video_enabled:
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milhouse_send_cmd_video.extend([ |
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'--videosource', details["send"]["video"]["source"], |
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'--videocodec', details["send"]["video"]["codec"], |
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'--videoport', str(details["send"]["video"]["port"]), |
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'--width', str(details["send"]["video"]["width"]), |
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'--height', str(details["send"]["video"]["height"]), |
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'--aspect-ratio', str(details["send"]["video"]["aspect-ratio"]), |
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]) |
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if details["send"]["video"]["source"] == "v4l2src": |
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dev = self.app.parse_v4l2_device_name(details["send"]["video"]["device"]) |
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if dev is None: |
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print "v4l2 device is not found !!!!" |
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else:
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v4l2_dev_name = dev["name"]
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milhouse_send_cmd_video.extend(["--videodevice", v4l2_dev_name])
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if details["send"]["video"]["codec"] != "theora": |
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milhouse_send_cmd_video.extend(['--videobitrate', str(int(details["send"]["video"]["bitrate"] * 1000000))]) |
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# send audio:
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if send_audio_enabled:
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milhouse_send_cmd_audio.extend([ |
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'--audiosource', details["send"]["audio"]["source"], |
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'--numchannels', str(details["send"]["audio"]["numchannels"]), |
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'--audiocodec', details["send"]["audio"]["codec"], |
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'--audioport', str(details["send"]["audio"]["port"]), |
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'--vumeter-id', str(details["send"]["audio"]["vumeter-id"]), |
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'--audio-buffer', str(details["send"]["audio"]["buffer"]) |
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]) |
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# ------------------- recv ----------------
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milhouse_recv_cmd_common.extend([ |
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"milhouse",
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'--receiver',
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'--address', details["peer"]["address"] |
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]) |
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# recv video:
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if recv_video_enabled:
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milhouse_recv_cmd_video.extend([ |
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'--videosink', details["receive"]["video"]["sink"], |
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'--videocodec', details["receive"]["video"]["codec"], |
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'--videoport', str(details["receive"]["video"]["port"]), |
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'--jitterbuffer', str(details["receive"]["video"]["jitterbuffer"]), |
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'--width', str(details["receive"]["video"]["width"]), |
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'--height', str(details["receive"]["video"]["height"]), |
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'--aspect-ratio', details["receive"]["video"]["aspect-ratio"], |
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'--window-title', details["receive"]["video"]["window-title"], |
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'--display', details["receive"]["video"]["display"], |
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]) |
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if details["receive"]["video"]["fullscreen"]: |
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milhouse_recv_cmd_video.append('--fullscreen')
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if details["receive"]["video"]["deinterlace"]: |
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milhouse_recv_cmd_video.append('--deinterlace')
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# recv audio:
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if recv_audio_enabled:
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milhouse_recv_cmd_audio.extend([ |
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# audio:
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'--audiosink', details["receive"]["audio"]["sink"], |
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'--numchannels', str(details["receive"]["audio"]["numchannels"]), |
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'--audiocodec', details["receive"]["audio"]["codec"], |
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'--audioport', str(details["receive"]["audio"]["port"]), |
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'--vumeter-id', str(details["receive"]["audio"]["vumeter-id"]), |
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'--audio-buffer', str(details["receive"]["audio"]["buffer"]) |
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]) |
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|
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self._prepare_stats_and_errors_dicts()
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# every element in the lists must be strings since we join them
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# TODO: not sync
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# TODO: if both disabled, do not start sender/receiver
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# ---- audio/video receiver ----
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if recv_audio_enabled or recv_video_enabled: # receiver(s) |
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milhouse_recv_cmd_final = [] |
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milhouse_recv_cmd_extra = [] |
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|
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milhouse_recv_cmd_final.extend(milhouse_recv_cmd_common) |
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milhouse_recv_cmd_extra.extend(milhouse_recv_cmd_common) |
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milhouse_recv_cmd_final.extend(milhouse_recv_cmd_video) |
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if extra_recv_enabled:
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milhouse_recv_cmd_extra.extend(milhouse_recv_cmd_audio) |
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milhouse_recv_cmd_extra.extend(["--jitterbuffer", str(details["receive"]["audio"]["jitterbuffer"])]) |
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else:
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milhouse_recv_cmd_final.extend(milhouse_recv_cmd_audio) |
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try:
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recv_cmd = " ".join(milhouse_recv_cmd_final)
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except TypeError, e: |
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print e
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print milhouse_recv_cmd_final
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raise
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try:
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extra_recv_cmd = " ".join(milhouse_recv_cmd_extra)
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except TypeError, e: |
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print e
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print milhouse_recv_cmd_extra
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raise
|
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if normal_recv_enabled:
|
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self.receiver = process.ProcessManager(command=recv_cmd, identifier="receiver") |
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self.receiver.state_changed_signal.connect(self.on_process_state_changed) |
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self.receiver.stdout_line_signal.connect(self.on_receiver_stdout_line) |
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self.receiver.stderr_line_signal.connect(self.on_receiver_stderr_line) |
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if extra_recv_enabled:
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self.extra_receiver = process.ProcessManager(command=extra_recv_cmd, identifier="extra_receiver") |
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self.extra_receiver.state_changed_signal.connect(self.on_process_state_changed) |
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self.extra_receiver.stdout_line_signal.connect(self.on_receiver_stdout_line) |
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self.extra_receiver.stderr_line_signal.connect(self.on_receiver_stderr_line) |
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# ---- audio/video sender ----
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if send_audio_enabled or send_video_enabled: # sender(s) |
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milhouse_send_cmd_final = [] |
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milhouse_send_cmd_extra = [] |
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|
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milhouse_send_cmd_final.extend(milhouse_send_cmd_common) |
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milhouse_send_cmd_extra.extend(milhouse_send_cmd_common) # only used if we have to
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milhouse_send_cmd_final.extend(milhouse_send_cmd_video) |
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if extra_send_enabled:
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milhouse_send_cmd_extra.extend(milhouse_send_cmd_audio) |
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else:
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milhouse_send_cmd_final.extend(milhouse_send_cmd_audio) |
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send_cmd = " ".join(milhouse_send_cmd_final)
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extra_send_cmd = " ".join(milhouse_send_cmd_extra)
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if normal_send_enabled:
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self.sender = process.ProcessManager(command=send_cmd, identifier="sender") |
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self.sender.state_changed_signal.connect(self.on_process_state_changed) |
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self.sender.stdout_line_signal.connect(self.on_sender_stdout_line) |
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self.sender.stderr_line_signal.connect(self.on_sender_stderr_line) |
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if extra_send_enabled:
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self.extra_sender = process.ProcessManager(command=extra_send_cmd, identifier="extra_sender") |
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self.extra_sender.state_changed_signal.connect(self.on_process_state_changed) |
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self.extra_sender.stdout_line_signal.connect(self.on_sender_stdout_line) |
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self.extra_sender.stderr_line_signal.connect(self.on_sender_stderr_line) |
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# FIXME: too much code duplication
|
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|
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if midi_recv_enabled:
|
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midi_out_device = self.app.parse_midi_device_name(details["receive"]["midi"]["output_device"], is_input=False) |
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#TODO: check if is None
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midi_recv_args = [ |
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"midistream",
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"--address", details["peer"]["address"], |
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"--receiving-port", str(details["receive"]["midi"]["port"]), |
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"--jitter-buffer", str(details["receive"]["midi"]["jitterbuffer"]), |
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"--output-device", str(midi_out_device["number"]) |
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] |
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#"--verbose",
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midi_recv_command = " ".join(midi_recv_args)
|
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self.midi_receiver = process.ProcessManager(command=midi_recv_command, identifier="midi_receiver") |
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self.midi_receiver.state_changed_signal.connect(self.on_process_state_changed) |
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self.midi_receiver.stdout_line_signal.connect(self.on_midi_stdout_line) |
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self.midi_receiver.stderr_line_signal.connect(self.on_midi_stderr_line) |
| 408 |
|
| 409 |
if midi_send_enabled:
|
| 410 |
midi_in_device = self.app.parse_midi_device_name(details["send"]["midi"]["input_device"], is_input=True) |
| 411 |
#TODO: check if is None
|
| 412 |
midi_send_args = [ |
| 413 |
"midistream",
|
| 414 |
"--address", details["peer"]["address"], |
| 415 |
"--sending-port", str(details["send"]["midi"]["port"]), |
| 416 |
"--input-device", str(midi_in_device["number"]) |
| 417 |
] |
| 418 |
#"--verbose",
|
| 419 |
midi_send_command = " ".join(midi_send_args)
|
| 420 |
self.midi_sender = process.ProcessManager(command=midi_send_command, identifier="midi_sender") |
| 421 |
self.midi_sender.state_changed_signal.connect(self.on_process_state_changed) |
| 422 |
self.midi_sender.stdout_line_signal.connect(self.on_midi_stdout_line) |
| 423 |
self.midi_sender.stderr_line_signal.connect(self.on_midi_stderr_line) |
| 424 |
|
| 425 |
# starting
|
| 426 |
self._set_state(process.STATE_STARTING)
|
| 427 |
if send_audio_enabled or send_video_enabled: |
| 428 |
print "$", send_cmd |
| 429 |
if normal_send_enabled:
|
| 430 |
self.sender.start()
|
| 431 |
if extra_send_enabled:
|
| 432 |
self.extra_sender.start()
|
| 433 |
if recv_audio_enabled or recv_video_enabled: |
| 434 |
print "$", recv_cmd |
| 435 |
if normal_recv_enabled:
|
| 436 |
self.receiver.start()
|
| 437 |
if extra_recv_enabled:
|
| 438 |
self.extra_receiver.start()
|
| 439 |
if midi_recv_enabled:
|
| 440 |
self.midi_receiver.start()
|
| 441 |
if midi_send_enabled:
|
| 442 |
self.midi_sender.start()
|
| 443 |
|
| 444 |
def get_command_lines(self): |
| 445 |
"""
|
| 446 |
Returns a list of all the current processes command lines. |
| 447 |
@rettype: list |
| 448 |
""" |
| 449 |
ret = [] |
| 450 |
for proc in self.get_all_streamer_process_managers(): |
| 451 |
ret.append(proc.command) |
| 452 |
return ret
|
| 453 |
|
| 454 |
def on_midi_stdout_line(self, process_manager, line): |
| 455 |
print process_manager.identifier, line
|
| 456 |
|
| 457 |
def on_midi_stderr_line(self, process_manager, line): |
| 458 |
print process_manager.identifier, line
|
| 459 |
|
| 460 |
def on_receiver_stdout_line(self, process_manager, line): |
| 461 |
"""
|
| 462 |
Handles a new line from our receiver process' stdout |
| 463 |
""" |
| 464 |
if "stream connected" in line: |
| 465 |
if "audio" in line: |
| 466 |
self.rtcp_stats["receive"]["audio"]["connected"] = True |
| 467 |
elif "video" in line: |
| 468 |
self.rtcp_stats["receive"]["video"]["connected"] = True |
| 469 |
elif "BITRATE" in line: |
| 470 |
if "video" in line: |
| 471 |
self.rtcp_stats["receive"]["video"]["bitrate"] = int(line.split(":")[-1]) |
| 472 |
elif "audio" in line: |
| 473 |
self.rtcp_stats["receive"]["audio"]["bitrate"] = int(line.split(":")[-1]) |
| 474 |
else:
|
| 475 |
print "%9s stdout: %s" % (process_manager.identifier, line) |
| 476 |
|
| 477 |
def on_receiver_stderr_line(self, process_manager, line): |
| 478 |
"""
|
| 479 |
Handles a new line from our receiver process' stderr |
| 480 |
""" |
| 481 |
print "%9s stderr: %s" % (process_manager.identifier, line) |
| 482 |
if "CRITICAL" in line or "ERROR" in line: |
| 483 |
self.error_messages["receive"].append(line) |
| 484 |
|
| 485 |
def on_sender_stdout_line(self, process_manager, line): |
| 486 |
"""
|
| 487 |
Handles a new line from our receiver process' stdout |
| 488 |
""" |
| 489 |
print "%9s stdout: %s" % (process_manager.identifier, line) |
| 490 |
try:
|
| 491 |
if "PACKETS-LOST" in line: |
| 492 |
if "video" in line: |
| 493 |
self.rtcp_stats["send"]["video"]["packets-lost"] = int(line.split(":")[-1]) |
| 494 |
elif "audio" in line: |
| 495 |
self.rtcp_stats["send"]["audio"]["packets-lost"] = int(line.split(":")[-1]) |
| 496 |
#self._calculate_packet_loss()
|
| 497 |
elif "AVERAGE PACKET-LOSS" in line: |
| 498 |
if "video" in line: |
| 499 |
self.rtcp_stats["send"]["video"]["packet-loss-percent"] = int(line.split(":")[-1]) |
| 500 |
elif "audio" in line: |
| 501 |
self.rtcp_stats["send"]["audio"]["packet-loss-percent"] = int(line.split(":")[-1]) |
| 502 |
elif "PACKETS-SENT" in line: |
| 503 |
if "video" in line: |
| 504 |
self.rtcp_stats["send"]["video"]["packets-sent"] = int(line.split(":")[-1]) |
| 505 |
elif "audio" in line: |
| 506 |
self.rtcp_stats["send"]["audio"]["packets-sent"] = int(line.split(":")[-1]) |
| 507 |
#self._calculate_packet_loss()
|
| 508 |
elif "JITTER" in line: |
| 509 |
if "video" in line: |
| 510 |
self.rtcp_stats["send"]["video"]["jitter"] = int(line.split(":")[-1]) |
| 511 |
elif "audio" in line: |
| 512 |
self.rtcp_stats["send"]["audio"]["jitter"] = int(line.split(":")[-1]) |
| 513 |
elif "BITRATE" in line: |
| 514 |
if "video" in line: |
| 515 |
self.rtcp_stats["send"]["video"]["bitrate"] = int(line.split(":")[-1]) |
| 516 |
elif "audio" in line: |
| 517 |
self.rtcp_stats["send"]["audio"]["bitrate"] = int(line.split(":")[-1]) |
| 518 |
elif "connected" in line: |
| 519 |
if "video" in line: |
| 520 |
self.rtcp_stats["send"]["video"]["connected"] = True |
| 521 |
elif "audio" in line: |
| 522 |
self.rtcp_stats["send"]["audio"]["connected"] = True |
| 523 |
except ValueError, e: |
| 524 |
print(e) |
| 525 |
|
| 526 |
def on_sender_stderr_line(self, process_manager, line): |
| 527 |
"""
|
| 528 |
Handles a new line from our receiver process' stderr |
| 529 |
""" |
| 530 |
print "%9s stderr: %s" % (process_manager.identifier, line) |
| 531 |
if "CRITICAL" in line or "ERROR" in line: |
| 532 |
self.error_messages["send"].append(line) |
| 533 |
|
| 534 |
def is_busy(self): |
| 535 |
"""
|
| 536 |
Retuns True if a streaming session is in progress. |
| 537 |
""" |
| 538 |
return self.state != process.STATE_STOPPED |
| 539 |
|
| 540 |
def get_all_streamer_process_managers(self): |
| 541 |
"""
|
| 542 |
Returns all the current streaming process managers for the current session. |
| 543 |
@rtype: list |
| 544 |
""" |
| 545 |
ret = [] |
| 546 |
for proc in [self.receiver, self.extra_receiver, self.sender, self.extra_sender, self.midi_receiver, self.midi_sender]: |
| 547 |
if proc is not None: |
| 548 |
ret.append(proc) |
| 549 |
return ret
|
| 550 |
|
| 551 |
def on_process_state_changed(self, process_manager, process_state): |
| 552 |
"""
|
| 553 |
Slot for the ProcessManager.state_changed_signal |
| 554 |
Calls stop() if one of the processes crashed. |
| 555 |
""" |
| 556 |
print process_manager, process_state
|
| 557 |
if process_state == process.STATE_RUNNING:
|
| 558 |
# As soon as one is running, set our state to running
|
| 559 |
if self.state == process.STATE_STARTING: |
| 560 |
self._set_state(process.STATE_RUNNING)
|
| 561 |
elif process_state == process.STATE_STOPPING:
|
| 562 |
pass
|
| 563 |
elif process_state == process.STATE_STARTING:
|
| 564 |
pass
|
| 565 |
elif process_state == process.STATE_STOPPED:
|
| 566 |
# As soon as one crashes or is not able to start, stop all streamer processes.
|
| 567 |
if self.state in [process.STATE_RUNNING, process.STATE_STARTING]: |
| 568 |
print("A streamer process died. Stopping the local streamer manager.")
|
| 569 |
self.stop() # sets self.state to STOPPING |
| 570 |
# Next, if all streamers are dead, we can say this manager is stopped
|
| 571 |
if self.state == process.STATE_STOPPING: |
| 572 |
one_is_left = False
|
| 573 |
for proc in self.get_all_streamer_process_managers(): |
| 574 |
if process_manager is not proc and proc.state != process.STATE_STOPPED: |
| 575 |
print("Streamer process %s is not dead, so we are not done stopping. Its state is %s." % (proc, proc.state))
|
| 576 |
one_is_left = True
|
| 577 |
if not one_is_left: |
| 578 |
print "Setting streamers manager to STOPPED" |
| 579 |
self._set_state(process.STATE_STOPPED)
|
| 580 |
|
| 581 |
def on_stopped(self): |
| 582 |
"""
|
| 583 |
When the state changes to stopped, |
| 584 |
* check for errors and display them to the user. |
| 585 |
""" |
| 586 |
msg = ""
|
| 587 |
details = ""
|
| 588 |
show_error_dialog = False
|
| 589 |
#TODO: internationalize
|
| 590 |
print("All streamers are stopped.")
|
| 591 |
print("Error messages for this session: %s" % (self.error_messages)) |
| 592 |
if len(self.error_messages["send"]) != 0: |
| 593 |
details += _("Errors from local sender:") + "\n" |
| 594 |
for line in self.error_messages["send"]: |
| 595 |
details += " * " + line + "\n" |
| 596 |
show_error_dialog = True
|
| 597 |
if len(self.error_messages["receive"]) != 0: |
| 598 |
details += _("Errors from local receiver:") + "\n" |
| 599 |
for line in self.error_messages["receive"]: |
| 600 |
details += " * " + line + "\n" |
| 601 |
show_error_dialog = True
|
| 602 |
if show_error_dialog:
|
| 603 |
msg = _("Some errors occured during the audio/video streaming session.")
|
| 604 |
dialogs.ErrorDialog.create(msg, parent=self.app.gui.main_window, details=details)
|
| 605 |
# TODO: should we set all our process managers to None
|
| 606 |
|
| 607 |
# set all to None:
|
| 608 |
self.sender = None |
| 609 |
self.receiver = None |
| 610 |
self.extra_sender = None |
| 611 |
self.extra_receiver = None |
| 612 |
self.midi_receiver = None |
| 613 |
self.midi_sender = None |
| 614 |
print "should all be None:", self.get_all_streamer_process_managers() |
| 615 |
|
| 616 |
def _set_state(self, new_state): |
| 617 |
"""
|
| 618 |
Handles state changes. |
| 619 |
""" |
| 620 |
if self.state != new_state: |
| 621 |
self.state_changed_signal(self, new_state) |
| 622 |
self.state = new_state
|
| 623 |
if new_state == process.STATE_STOPPED:
|
| 624 |
self.on_stopped()
|
| 625 |
else:
|
| 626 |
raise RuntimeError("Setting state to %s, which is already the current state." % (self.state)) |
| 627 |
|
| 628 |
def stop(self): |
| 629 |
"""
|
| 630 |
Stops the sender and receiver processes. |
| 631 |
Does not send any message to the remote peer ! This must be done somewhere else. |
| 632 |
""" |
| 633 |
#TODO: return a deferred
|
| 634 |
# stopping
|
| 635 |
if self.state in [process.STATE_RUNNING, process.STATE_STARTING]: |
| 636 |
self._set_state(process.STATE_STOPPING)
|
| 637 |
for proc in self.get_all_streamer_process_managers(): |
| 638 |
if proc is not None: |
| 639 |
if proc.state != process.STATE_STOPPED and proc.state != process.STATE_STOPPING: |
| 640 |
proc.stop() |