[eee389a] | 1 | import logging |
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| 2 | import threading |
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| 3 | import subprocess |
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| 4 | import time |
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[cf0d7e8] | 5 | from . import sync |
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[eee389a] | 6 | |
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| 7 | # initialize logger |
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| 8 | logger = logging.getLogger(__name__) |
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| 9 | |
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| 10 | class Player(threading.Thread): |
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| 11 | |
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| 12 | def __init__(self, fh, *args, **kwargs): |
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| 13 | self.lock = threading.RLock() |
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| 14 | |
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| 15 | with self.lock: |
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| 16 | super(Player, self).__init__(*args, **kwargs) |
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| 17 | self.fh = fh |
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| 18 | self.player = None |
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| 19 | self._callback = None |
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[345c476] | 20 | self._paused = False |
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[2620618] | 21 | self._done = False |
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| 22 | self._dryrun = False |
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| 23 | self._dryrun_time = 0.5 |
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[adf8cf0] | 24 | self._lag = 0.01 |
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[eee389a] | 25 | |
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| 26 | @property |
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[cf0d7e8] | 27 | @sync |
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[eee389a] | 28 | def is_playing(self): |
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[cf0d7e8] | 29 | if self._dryrun: |
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[bd5bffc] | 30 | return self.ident is not None and \ |
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| 31 | self.isAlive() and \ |
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| 32 | not self.is_done |
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[cf0d7e8] | 33 | else: |
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[bd5bffc] | 34 | return self.ident is not None and \ |
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| 35 | self.isAlive() and \ |
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| 36 | not self.is_done and \ |
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| 37 | self.player is not None and \ |
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| 38 | self.player.poll() is None |
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| 39 | |
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[eee389a] | 40 | @property |
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[cf0d7e8] | 41 | @sync |
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[345c476] | 42 | def is_paused(self): |
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[cf0d7e8] | 43 | return self.is_playing and self._paused |
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[345c476] | 44 | |
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| 45 | @property |
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| 46 | def is_done(self): |
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[2620618] | 47 | return self._done |
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[345c476] | 48 | |
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| 49 | @property |
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[eee389a] | 50 | def callback(self): |
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| 51 | return self._callback |
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| 52 | @callback.setter |
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[cf0d7e8] | 53 | @sync |
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[eee389a] | 54 | def callback(self, val): |
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[cf0d7e8] | 55 | self._callback = val |
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[eee389a] | 56 | |
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[adf8cf0] | 57 | def start(self): |
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| 58 | super(Player, self).start() |
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| 59 | time.sleep(self._lag) |
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| 60 | |
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[eee389a] | 61 | def run(self): |
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| 62 | if self.fh is None: |
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| 63 | raise ValueError, "file handler is None" |
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| 64 | |
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| 65 | logger.info("playing file '%s'" % self.fh.name) |
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[b8c3505] | 66 | |
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| 67 | with self.lock: |
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| 68 | self._paused = False |
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| 69 | self._done = False |
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[2620618] | 70 | |
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[a9eb577e] | 71 | command = ["mplayer", "-really-quiet", "-slave", self.fh.name] |
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| 72 | logger.info("running '%s'", " ".join(command)) |
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[c94fa32] | 73 | |
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[2620618] | 74 | if self._dryrun: |
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| 75 | step = 0.01 |
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| 76 | while self._dryrun_time > 0: |
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| 77 | time.sleep(step) |
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| 78 | self._dryrun_time -= step |
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| 79 | while self.is_paused: |
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| 80 | time.sleep(0.01) |
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[b8c3505] | 81 | |
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| 82 | else: |
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[eee389a] | 83 | with self.lock: |
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[b8c3505] | 84 | self.player = subprocess.Popen( |
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[c94fa32] | 85 | command, |
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[b8c3505] | 86 | stdin=subprocess.PIPE, |
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| 87 | stderr=subprocess.PIPE, |
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| 88 | stdout=subprocess.PIPE) |
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| 89 | |
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| 90 | # wait for mplayer to finish |
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| 91 | while True: |
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| 92 | with self.lock: |
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| 93 | playing = self.is_playing |
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| 94 | if not playing: |
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| 95 | break |
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| 96 | time.sleep(0.1) |
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[345c476] | 97 | |
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[b8c3505] | 98 | logger.info("mplayer finished with code %d" % self.player.returncode) |
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[2620618] | 99 | |
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[b8c3505] | 100 | # get output from mplayer and log it |
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| 101 | with self.lock: |
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| 102 | stderr = self.player.stderr.read() |
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| 103 | stdout = self.player.stdout.read() |
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[eee389a] | 104 | |
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[b8c3505] | 105 | if stderr.strip() != "": |
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| 106 | logger.error(stderr) |
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| 107 | if stdout.strip() != "": |
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| 108 | logger.debug(stdout) |
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| 109 | |
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| 110 | with self.lock: |
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| 111 | if self.callback: |
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| 112 | self.callback() |
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| 113 | self._done = True |
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[eee389a] | 114 | |
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| 115 | def mplayer_pause(self): |
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[cf0d7e8] | 116 | # Note: Inner lock due to sleep. |
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[eee389a] | 117 | with self.lock: |
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| 118 | if self.is_playing: |
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[2620618] | 119 | if not self._dryrun: |
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| 120 | self.player.stdin.write("pause\n") |
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[345c476] | 121 | self._paused = not(self._paused) |
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[2620618] | 122 | logger.info("paused: %s", self.is_paused) |
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| 123 | else: |
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| 124 | logger.warning("trying to pause non-playing job") |
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[adf8cf0] | 125 | time.sleep(self._lag) |
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[bd5bffc] | 126 | |
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[eee389a] | 127 | def mplayer_stop(self): |
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[bd5bffc] | 128 | # Note: Inner lock due to join. |
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[eee389a] | 129 | with self.lock: |
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| 130 | if self.is_playing: |
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[2620618] | 131 | if not self._dryrun: |
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| 132 | self.player.stdin.write("quit\n") |
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| 133 | else: |
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| 134 | self._dryrun_time = 0.0 |
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| 135 | logger.info("stopped") |
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| 136 | else: |
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| 137 | logger.warning("trying to stop non-playing job") |
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[b8c3505] | 138 | self.join() |
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[bd5bffc] | 139 | |
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