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