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gmyth-stream/server/0.2/plugins/transcoders/gmencoder.py
author renatofilho
Mon Apr 23 21:08:07 2007 +0100 (2007-04-23)
branchtrunk
changeset 589 549c4664701e
child 595 5c5cff842d57
permissions -rw-r--r--
[svn r595] created new plugin 
     1 import os

     2 import shlex

     3 import signal

     4 import subprocess

     5 

     6 import lib.utils as utils

     7 import lib.server as server

     8 

     9 __all__ = ("TranscoderGMencoder",)

    10 

    11 class TranscoderGMencoder(server.Transcoder):

    12     gmencoder_path = utils.which("gmencoder")

    13     name = "gmencoder"

    14     priority = -1

    15     proc = None

    16     args = {}

    17 

    18     def __init__(self, params):

    19         server.Transcoder.__init__(self, params)

    20         self.opts = []

    21     # __init__()

    22 

    23     def _insert_param (self, name, value):

    24         if (value != ""):

    25             self.opts.append(name)

    26             self.opts.append(value)

    27 

    28     def _parser_params (self):

    29         self._insert_param("-i", \

    30             "%s://%s" % (self.params_first("uri_prefix", "file"), self.params_first("uri_path", "")))

    31         self._insert_param("--video-encode", self.params_first("ve", ""))

    32         self._insert_param("--video-opts", "bitrate=200,pass=2,quantizer=5")

    33         self._insert_param("--video-fps", self.params_first("fps", ""))

    34         self._insert_param("--video-width", self.params_first("width", ""))

    35         self._insert_param("--video-height", self.params_first("height", ""))

    36         self._insert_param("--audio-encode", self.params_first("ae", ""))

    37         self._insert_param("--output-element", "fdsink")

    38     # _parse_params 

    39     

    40     def start(self, outfd):

    41         self.opts.append (self.gmencoder_path)

    42         self._parser_params ()

    43         self.opts.append ("--output-opts")

    44         self.opts.append ("fd=%d" % outfd.fileno())

    45 

    46         cmd = " ".join(self.opts)

    47         self.log.info ("Gmemconder: %s", cmd)

    48 

    49         try:

    50             self.proc = subprocess.Popen(self.opts, stdin=subprocess.PIPE)

    51         except Exception, e:

    52             self.log.error("Error executing gmencoder: %s" % e)

    53             return False

    54 

    55         try:

    56              self.proc.wait()

    57             

    58         except Exception, e:

    59             self.log.error("Problems handling data: %s" % e)

    60             return False

    61 

    62         return True

    63     # start()

    64 

    65 

    66     def stop(self):

    67         if self.proc:

    68             self.log.info ("STOP")

    69             try:

    70                 self.proc.stdin.write ("QUIT\n")

    71             except Exception, e:

    72                 pass

    73 

    74             try:

    75                 self.proc.wait()

    76             except Exception, e:

    77                 pass

    78 

    79             self.proc = None

    80     # stop()

    81 

    82 # TranscoderGMencoder
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