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#!/usr/bin/python |
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################################################################################ |
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# # |
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# Copyright (c) 2006 Andrew Pollock <me@andrew.net.au> All Rights Reserved # |
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# # |
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################################################################################ |
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|
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import socket |
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import datetime |
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|
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class FrontendNotReady(Exception): |
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pass |
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|
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class FrontendCmdFailure(Exception): |
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pass |
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class FrontendInvalidInput(Exception): |
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pass |
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class Frontend: |
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"""Class for operating on a MythTV frontend""" |
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def __init__(self, host, port=6546): |
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self.host = host |
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self.port = port |
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self.ready = False |
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self.socket = None |
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# We might as well raise an exception at instantiation if |
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# the frontend is unavailable |
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self._connect() |
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def _connect(self): |
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"""Create a connection to the frontend""" |
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self.socket = socket.socket() |
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try: |
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self.socket.connect((self.host, self.port)) |
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except socket.error: |
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raise FrontendNotReady("Unable to connect to frontend") |
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if self.socket.recv(4096).splitlines()[-1] == '# ': |
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self.ready = True |
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def _sendcmd(self, cmd): |
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"""Send a command to the frontend""" |
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self._connect() |
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if self.ready: |
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self.socket.send("%s\r\n" % cmd) |
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return self.socket.recv(4096).splitlines() |
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def location(self): |
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"""Return what location the front end is currently in""" |
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result = self._sendcmd("query location")[0].split(" ") |
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location = Location() |
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location.where = result[0] |
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if location.where == 'Playback': |
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location.program = ProgramInfo() |
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location.program.what = result[1] |
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location.program.position = result[2] |
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location.program.length = result[4] |
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location.program.speed = result[5] |
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location.program.chanid = result[6] |
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recdate = result[7].split("T")[0].split("-") |
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location.program.recdate = datetime.date(int(recdate[0]), int(recdate[1]), int(recdate[2])) |
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rectime = result[7].split("T")[1].split(":") |
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location.program.rectime = datetime.time(int(rectime[0]), int(rectime[1]), int(rectime[2])) |
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if location.program.what == 'Recorded': |
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try: |
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location.program.title = self.recording(location.program.chanid, location.program.recdate.isoformat(), location.program.rectime.isoformat()) |
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except FrontendNotReady: |
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location.program.title = None |
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elif location.where == 'PlaybackBox': |
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pass |
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elif location.where == 'MainMenu': |
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pass |
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|
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return location |
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def recording(self, chanid, recdate, rectime): |
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"""Returns recording information for a specified recording""" |
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result = self._sendcmd("query recording %s %sT%s" % |
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(chanid, recdate, rectime))[0].split(" ") |
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return " ".join(result[2:]) |
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def pause(self): |
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"""Pauses the playback""" |
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result = self._sendcmd("play speed pause")[0] |
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if result != "OK": |
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#TODO(apollock): raise some sort of exception |
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raise FrontendCmdFailure("Frontend said '%s' in response to 'play speed pause' command" % result) |
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|
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def play(self): |
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"""Resumes playback""" |
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result = self._sendcmd("play speed normal")[0] |
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if result != "OK": |
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raise FrontendCmdFailure("Frontend said '%s' in response to 'play speed normal' command" % result) |
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def isPaused(self): |
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"""Returns if the the frontend is paused or not""" |
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loc1 = self.location() |
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if loc1.where != 'Playback': |
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return False |
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else: |
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loc2 = self.location() |
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if loc2.where != 'Playback': |
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return False |
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else: |
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return loc1.program.position == loc2.program.position |
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|
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def targets(self): |
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"""Returns a list of targets that jump() accepts""" |
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result = self._sendcmd("help jump") |
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return [x.split(" ")[0] for x in result[3:]] |
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def jump(self, target): |
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"""Jumps to the specified location""" |
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if target not in self.targets(): |
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raise FrontendInvalidInput("Invalid jump target '%s'" % target) |
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else: |
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result = self._sendcmd("jump %s" % target)[0] |
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if result != 'OK': |
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raise FrontendCmdFailure("Frontend said '%s' in response to 'jump %s' command" % (result, target)) |
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class Location: |
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"""Container for where the frontend currently is""" |
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def __init__(self): |
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self.program = None |
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self.where = None |
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class ProgramInfo: |
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"""Container for program information""" |
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|
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def __init__(self): |
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pass |
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