| 1 | #!/usr/bin/python2.4 |
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| 2 | |
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| 3 | import ConfigParser |
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| 4 | import os |
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| 5 | import logging |
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| 6 | import time |
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| 7 | import traceback |
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| 8 | import sys |
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| 9 | |
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| 10 | #3rd party libraries |
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| 11 | # templating system |
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| 12 | from Cheetah.Template import Template |
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| 13 | #twisted networking |
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| 14 | from twisted.internet import reactor |
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| 15 | |
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| 16 | class IndyTubeTranscoder(object): |
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| 17 | |
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| 18 | def __init__(self): |
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| 19 | """constructor for IndyTubeTranscoder""" |
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| 20 | |
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| 21 | def parse_config(self,conf_file): |
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| 22 | """parse config from the filename argument passed in""" |
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| 23 | config = ConfigParser.RawConfigParser() |
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| 24 | config.read(conf_file) |
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| 25 | |
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| 26 | self.MENCODER_LOCATION=config.get('mencoder','MENCODER_LOCATION') |
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| 27 | self.MENCODER_OPTIONS=config.get('mencoder','MENCODER_OPTIONS') |
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| 28 | |
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| 29 | self.FFMPEG2THEORA_COMMAND=config.get('ffmpeg2theora','FFMPEG2THEORA_COMMAND') |
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| 30 | self.CORTADO_LOCATION=config.get('ffmpeg2theora','CORTADO_LOCATION') |
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| 31 | |
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| 32 | self.FLVTOOL_LOCATION=config.get('flvtool2','FLVTOOL_LOCATION') |
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| 33 | |
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| 34 | self.BE_HOW_NICE=config.get('encoder','BE_HOW_NICE') |
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| 35 | self.CONVERT_THESE=eval(config.get('encoder','CONVERT_THESE')) |
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| 36 | self.DO_ENCODING=config.getboolean('encoder','DO_ENCODING') |
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| 37 | self.NUMBER_OF_PARALLEL_ENCODERS=config.getint('encoder','NUMBER_OF_PARALLEL_ENCODERS') |
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| 38 | self.ENCODER_LOCKFILE_BASE=config.get('encoder','ENCODER_LOCKFILE_BASE') |
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| 39 | self.POLLTIME=int(config.get('encoder','POLLTIME')) |
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| 40 | |
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| 41 | self.VIDEO_FILE_DIRECTORY=config.get('paths','VIDEO_FILE_DIRECTORY') |
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| 42 | self.FLV_FILE_DIRECTORY=config.get('paths','FLV_FILE_DIRECTORY') |
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| 43 | self.INCLUDE_FILE_DIRECTORY=config.get('paths','INCLUDE_FILE_DIRECTORY') |
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| 44 | self.INCLUDE_FILE_SUFFIX=config.get('paths','INCLUDE_FILE_SUFFIX') |
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| 45 | self.INCLUDE_TEMPLATE=config.get('paths','INCLUDE_TEMPLATE') |
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| 46 | |
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| 47 | self.FLOWPLAYER_LOCATION=config.get('urls','FLOWPLAYER_LOCATION') |
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| 48 | self.VIDEO_SERVER_URL=config.get('urls','VIDEO_SERVER_URL') |
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| 49 | self.SPLASH_IMAGE_BASE=config.get('urls','SPLASH_IMAGE_BASE') |
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| 50 | self.SPLASH_IMAGE_FILE=config.get('urls','SPLASH_IMAGE_FILE') |
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| 51 | |
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| 52 | self.LOG_FILE=config.get('logging','LOG_FILE') |
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| 53 | self.LOG_LEVEL=eval(config.get('logging','LOG_LEVEL')) |
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| 54 | |
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| 55 | logging.basicConfig(level=self.LOG_LEVEL, format='%(asctime)s %(levelname)s %(message)s', filename=self.LOG_FILE, filemode='a') |
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| 56 | |
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| 57 | self.ENCODER_LOCKFILE = "" |
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| 58 | |
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| 59 | def check_lock_file(self): |
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| 60 | """ inits the logging, and checks for the parallel lock files. If there are no more free spots as an encoder, returns False, else returns True""" |
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| 61 | self.ENCODER_LOCKFILE="" #this is dynamic, generated off the base |
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| 62 | |
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| 63 | #check we arent already running (up to the number of parallel encoders) and if we are , exit |
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| 64 | for n in range(0,self.NUMBER_OF_PARALLEL_ENCODERS): |
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| 65 | #set the lockfile name, for later |
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| 66 | self.ENCODER_LOCKFILE="%s.%s" % (self.ENCODER_LOCKFILE_BASE,n) |
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| 67 | if os.path.exists(self.ENCODER_LOCKFILE): |
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| 68 | if n==(self.NUMBER_OF_PARALLEL_ENCODERS-1): |
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| 69 | logging.info("Max encoders reached(%s), exiting." % self.NUMBER_OF_PARALLEL_ENCODERS) |
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| 70 | #we should exit the program here |
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| 71 | #sys.exit("Max encoders reached(%s), exiting." % self.NUMBER_OF_PARALLEL_ENCODERS) |
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| 72 | return False |
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| 73 | else: |
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| 74 | #we have a free spot , as encoder 'n', lets make the lock file and break out |
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| 75 | os.mknod(self.ENCODER_LOCKFILE) |
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| 76 | break |
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| 77 | return True |
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| 78 | |
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| 79 | def do_transcoding_loop(self): |
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| 80 | """do one transcoding loop""" |
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| 81 | logging.info("Starting indytube... in %s " % self.VIDEO_FILE_DIRECTORY) |
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| 82 | checked = 0 |
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| 83 | converted = 0 |
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| 84 | for root,dir,files in os.walk(self.VIDEO_FILE_DIRECTORY): |
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| 85 | for f in files: |
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| 86 | |
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| 87 | #Start the transcoding attempt here, with file 'f' |
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| 88 | # |
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| 89 | (stem,extension)=os.path.splitext(f) |
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| 90 | if extension.lower() in self.CONVERT_THESE: #we should convert the file |
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| 91 | checked = checked + 1 |
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| 92 | |
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| 93 | relative_directory=root[len(self.VIDEO_FILE_DIRECTORY):] |
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| 94 | if relative_directory.startswith(os.sep): |
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| 95 | relative_directory=relative_directory[1:] # make sure we are relative |
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| 96 | |
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| 97 | videofile = os.path.join(root,f) |
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| 98 | lockfile = os.path.join(root,stem+".wetube_lock") # we are encoding already |
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| 99 | skipfile = os.path.join(root,stem+".wetube_skip") # we tried and failed, don't bother again |
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| 100 | flvfile = os.path.join(self.FLV_FILE_DIRECTORY,relative_directory,stem+".flv") |
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| 101 | theorafile = os.path.join(self.FLV_FILE_DIRECTORY,relative_directory,stem+".ogg") |
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| 102 | includefile = os.path.join(self.INCLUDE_FILE_DIRECTORY,relative_directory,stem+self.INCLUDE_FILE_SUFFIX) |
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| 103 | #logging.info("check for %s, %s, %s " % (lockfile, skipfile, flvfile)) |
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| 104 | |
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| 105 | #check that another encoder isnt already processing this file (lockfile) or that we havent tried and failed before (skipfile) |
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| 106 | if not(os.path.exists(lockfile) or os.path.exists(skipfile)): |
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| 107 | #OK, valid video file ready to try to transcode |
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| 108 | logging.debug("Checking file %s, using extension %s " % ( os.path.join(root,f), extension)) |
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| 109 | try: |
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| 110 | os.mknod(lockfile) # touch the lock file |
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| 111 | |
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| 112 | # if the flv file (autogenerated) or html snippet is not there, then reencode! |
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| 113 | if not(os.path.exists(flvfile)) or not(os.path.exists(includefile)): |
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| 114 | logging.info('OK to try encoding: '+videofile) |
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| 115 | |
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| 116 | #pipe_to_null = '> /dev/null 2>&1' |
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| 117 | if self.DO_ENCODING: #maybe we just want to regenerate the include file! |
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| 118 | #mencoder flv conversion |
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| 119 | start_time=time.time() |
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| 120 | encoder_command = self.MENCODER_LOCATION + " -quiet " + videofile + " -o " + flvfile + " " + self.MENCODER_OPTIONS |
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| 121 | os.system('nice -n '+self.BE_HOW_NICE+' '+encoder_command) |
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| 122 | finish_time=time.time() |
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| 123 | logging.info("Encoded %s in %.2f seconds, using cmd -- %s" % (videofile,finish_time-start_time,encoder_command)) |
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| 124 | flvtool_command = self.FLVTOOL_LOCATION+" -U stdin "+flvfile |
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| 125 | os.system("cat "+ flvfile +" | "+ 'nice -n '+ self.BE_HOW_NICE+' '+flvtool_command) |
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| 126 | |
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| 127 | #ffmpeg2theora , theora/ogg conversion |
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| 128 | start_time=time.time() |
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| 129 | theora_cmd = self.FFMPEG2THEORA_COMMAND + ' ' + videofile + " -o " + theorafile |
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| 130 | os.system('nice -n '+ self.BE_HOW_NICE+' '+ theora_cmd) |
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| 131 | finish_time=time.time() |
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| 132 | logging.info("Encoded %s in %.2f seconds, using cmd -- %s" % (videofile,finish_time-start_time,theora_cmd)) |
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| 133 | |
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| 134 | converted = converted + 1 |
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| 135 | |
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| 136 | else: |
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| 137 | logging.debug("skipped encoding, will just do html template generation, if flv exists as non-zero size") |
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| 138 | |
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| 139 | else: |
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| 140 | logging.debug("flv file and html file already exists, not doing transcoding") |
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| 141 | |
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| 142 | #make the flash HTML snippet if the flv got created correctly. |
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| 143 | #XXX todo, separate out the flv and ogg theora (java applet) html snippet |
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| 144 | if os.path.exists(flvfile) and os.path.getsize(flvfile)>0: |
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| 145 | logging.info("Making html template - original size of %s: %.1fMB, Encoded size: %.1fMB" % (videofile,os.path.getsize(videofile)/1000000.0,os.path.getsize(flvfile)/1000000.0)) |
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| 146 | data_map={ |
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| 147 | 'flowplayer_location':self.FLOWPLAYER_LOCATION, |
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| 148 | 'videofile':relative_directory+'/'+stem+".flv", |
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| 149 | 'videobaseurl':self.VIDEO_SERVER_URL, |
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| 150 | 'splashbaseurl':self.SPLASH_IMAGE_BASE, |
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| 151 | 'splashfile':self.SPLASH_IMAGE_FILE, |
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| 152 | 'cortado_location':self.CORTADO_LOCATION, |
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| 153 | 'oggfile':stem+".ogg", |
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| 154 | 'mirid':stem} |
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| 155 | t = Template(file=self.INCLUDE_TEMPLATE, searchList=[data_map]) |
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| 156 | f=open(includefile, 'w') |
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| 157 | f.write(t.respond()) |
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| 158 | f.close() |
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| 159 | |
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| 160 | else: |
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| 161 | logging.info("FLV file size is zero - assuming encoding failed! Permanently skipping file!") |
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| 162 | os.mknod(skipfile) |
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| 163 | |
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| 164 | #finished transcoding block , remove lock file |
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| 165 | os.remove(lockfile) |
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| 166 | |
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| 167 | except: |
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| 168 | logging.info("Error while processing %s: %s" % (videofile,traceback.format_exc())) |
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| 169 | os.remove(lockfile) |
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| 170 | #remove this process's lockfile, this exception will stop the entire process |
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| 171 | os.remove(self.ENCODER_LOCKFILE) |
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| 172 | |
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| 173 | else: |
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| 174 | logging.debug(' lock file or skip file present for file %s ' % videofile) |
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| 175 | |
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| 176 | #remove this process's lockfile, we have finished the loop |
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| 177 | os.remove(self.ENCODER_LOCKFILE) |
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| 178 | logging.info("Ending indytube... We checked %s eligble files, converted %s files " % (checked, converted)) |
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| 179 | |
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| 180 | ## end : do_transcoding_loop |
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| 181 | |
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| 182 | def main(): |
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| 183 | |
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| 184 | def looperInvoker(indytuber): |
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| 185 | """recursively invoked callback, to check invoking do_transcoding_loop""" |
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| 186 | logging.debug("started looperInvoker function at %s, calling loop every %s seconds " % (time.strftime("%D %H:%M:%S"), indytuber.POLLTIME)) |
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| 187 | #check for others |
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| 188 | if indytuber.check_lock_file(): |
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| 189 | #do transcoding |
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| 190 | indytuber.do_transcoding_loop() |
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| 191 | |
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| 192 | #recursive, time-delayed callback |
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| 193 | #periodically run this function ,to keep looping |
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| 194 | # passing along the indytube object as an argument. (try not to _call_ this function or else you'll end up in infinite recursion!) |
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| 195 | reactor.callLater(indytuber.POLLTIME,looperInvoker,indytuber) |
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| 196 | |
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| 197 | #make an IndyTubeTranscoder object |
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| 198 | indytuber = IndyTubeTranscoder() |
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| 199 | #parse our config |
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| 200 | indytuber.parse_config('indytube.conf') |
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| 201 | #we have started! |
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| 202 | logging.info("started main function at %s, calling loop every %s seconds " % (time.strftime("%D %H:%M:%S"), indytuber.POLLTIME)) |
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| 203 | #start it for real, once off |
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| 204 | looperInvoker(indytuber) |
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| 205 | #start the twisted reactor |
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| 206 | reactor.run() |
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| 207 | |
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| 208 | # this only runs if the module was *not* imported |
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| 209 | if __name__ == '__main__': |
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| 210 | main() |
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| 211 | |
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| 212 | # Copyright John Duda, 2006 |
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| 213 | # Copyright Andy Nicholson, 2007 |
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| 214 | |
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| 215 | # This program is free software; you can redistribute it and/or modify |
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| 216 | # it under the terms of the GNU General Public License as published |
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| 217 | # by the Free Software Foundation; either version 2 of the License, |
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| 218 | # or (at your option) any later version. |
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| 219 | |
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| 220 | # This program is distributed in the hope that it will be useful, |
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| 221 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 222 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 223 | # GNU General Public License for more details. |
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| 224 | |
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| 225 | # You should have received a copy of the GNU General Public License |
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| 226 | # along with this program; if not, write to the Free Software |
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| 227 | # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 228 | |
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