X-Git-Url: http://p2p-next.cs.pub.ro/gitweb/?a=blobdiff_plain;f=cis%2Fcisd.py;h=b042817e6ef94d8a3c99b298512b422693343b15;hb=820d45742df3bedbb0477e06cb651f5d328e5ab2;hp=cb22887eb8d8d815dbfa27dcdfdc23677e2f7db8;hpb=a95dd065bbaaf656f69903e9a3eed83c326c1437;p=living-lab-site.git diff --git a/cis/cisd.py b/cis/cisd.py index cb22887..b042817 100755 --- a/cis/cisd.py +++ b/cis/cisd.py @@ -1,15 +1,253 @@ #!/usr/bin/env python import sys +import os +import shutil +import time +import threading +from Queue import Queue + import config -import cis_exceptions +import bt + + +class CIWorker(threading.Thread): + """ + Content Ingestion Worker. A class which executes content ingestion jobs + on a separate thread. + + CIWorker shares a Queue with its master where jobs are submitted. + """ + + raw_videos_dir = 'tmp/raw' + transcoded_videos_dir = 'tmp/media' + thumbs_dir = 'tmp/thumbs' + torrents_dir = 'tmp/torrents' + + def __init__(self, queue, bit_torrent): + """ + Initialize Content Ingestion Worker. + + @param queue a list of dictionaries with the following keys: + + """ + + threading.Thread.__init__(self, name='CIWorker') + + self.queue = queue + self.bit_torrent = bit_torrent + + def transfer_in(self, raw_video): + """ + Transfers a raw video file from the Web Server. + + @param raw_video raw video file name + """ + + file_transfer = config.FILE_TRANSFERER_CLASS( \ + self.raw_videos_dir, config.INPUT_PATH) + file_transfer.get([raw_video]) + file_transfer.close() + + print '** Transfering in finished.' + + def transcode(self, input_video, video_name, transcode_configs): + """ + Transcodes a video in each requested formats. + + @param input_video input video file name + @param video_name a video name which must be a valid file name + @param transcode_configs a list of dictionaries with format settings + """ + + transcoder = config.TRANSCODER_CLASS( \ + input_file = os.path.join(self.raw_videos_dir, input_video), \ + name = video_name, prog_bin = config.TRANSCODER_BIN) + transcoder.dest_path = self.transcoded_videos_dir + + # Transcode the raw video in each requested format. + # TODO report partial errors + for transcode_config in transcode_configs: + transcode_config['output_file'] = \ + transcoder.transcode(**transcode_config) + + print '** Transcoding finished.' + + def extract_thumbs(self, input_video, video_name, thumbs): + """ + Extracts thumbnail images from a video. + + @param input_video input video file name + @param video_name a video name which must be a valid file name + @param thumbs use 'random' to extract a thumbnail image from a random + point of the video or use a positive integer n to extract n summary + thumbnail + """ + + # TODO report partial errors + thumb_extractor = config.THUMB_EXTRACTOR_CLASS( \ + input_file = os.path.join(self.raw_videos_dir, input_video), \ + name = video_name, \ + prog_bin = config.THUMB_EXTRACTOR_BIN) + thumb_extractor.dest_path = self.thumbs_dir + if thumbs == 'random': + thumb_extractor.extract_random_thumb() + elif type(thumbs) is int and thumbs > 0: + thumb_extractor.extract_summary_thumbs(thumbs) + + print '** Extracting thumbs finished.' + + def seed(self, transcode_configs): + """ + Creates torrents from the videos passed and then stats seeding them. + + @param transcode_configs a list of dictionaries with format settings + """ + + for transcode_config in transcode_cofigs: + # * CREATE TORRENTS FOR EACH TRANSCODED VIDEO + # Create torrent file. + bt.create_torrent(transcode_config['output_file']) + + # The torrent file is created in the same directory with the + # source file. Move it to the torrents directory. + shutil.move(transcode_config['output_file'] + '.tstream', \ + self.torrents_dir) + + # * SEED TORRENTS + bit_torrent.start_download( \ + transcode_config['output_file'] + '.tstream', + self_transcoded_videos_dir) + + print '** Creating torrents and seeding finished.' + + def transfer_out(self, local_files, local_path, remote_path): + """ + Transfers some local files to a remote path of the Web Server. + + @param local_files list local files to transfer + @param remote_path destination path on the Web Server + """ + + file_transfer = config.FILE_TRANSFERER_CLASS( \ + local_path, remote_path) + file_transfer.put(local_files) + file_transfer.close() + + print '** Creating torrents and seeding finished.' + + def remove_file(self, files, path): + """ + Deletes files from a specified path. + """ + + for f in files: + os.unlink(os.path.join(path, f)) + + print '** Cleaning up finished.' + + def run(self): + while True: + job = self.queue.get() + + # * TRANSFER RAW VIDEO IN + self.transfer_in(job['raw_video']) + + # * TRANSCODE RAW VIDEO + self.transcode(job['raw_video'], job['name'], \ + job['transcode_configs']) + + # * EXTRACT THUMBNAIL IMAGES + if job['thumbs'] != 0: + self.extract_thumbs(job['raw_video'], job['name'], \ + job['thumbs']) + +# # * CREATE TORRENTS AND START SEEDING OF TRANSCODED VIDEOS +# self.seed(job['transcode_configs']) +# +# # Torrent files. +# files = [f for f in os.listdir(self.torrents_dir) \ +# if os.path.isfile(os.path.join( \ +# self.torrents_dir, f))] +# torrent_files = fnmatch.filter(files, name + "_*") +# +# # Thumbnail images files. +# files = [f for f in os.listdir(self.thumbs_dir) \ +# if os.path.isfile(os.path.join( \ +# self.thumbs_dir, f))] +# thumb_files = fnmatch.filter(files, name + "_*") +# +# # Raw video files. +# raw_files = [f for f in os.listdir(self.raw_videos_dir) \ +# if os.path.isfile(os.path.join( \ +# self.raw_videos_dir, f))] +# +# # * TRANSFER TORRENTS AND THUMBNAIL IMAGES OUT +# self.transfer_out(torrent_files, self.torrents_dir, \ +# config.OUTPUT_TORRENTS_PATH) +# self.transfer_out(thumb_files, self.thumbs_dir, \ +# config.OUTPUT_THUMBS_PATH) +# +# # * CLEANUP RAW VIDEOS AND THUMBNAIL IMAGES +# self.remove_files(raw_files, self.raw_videos_dir) +# self.remove_files(thumb_files, self.thumbs_dir) + + # * JOB FINISHED + queue.task_done() if __name__ == '__main__': -# transcoder = config.TRANSCODER_CLASS(sys.argv[1]) -# transcoder.transcode('webm', "vorbis", "vp8", a_bitrate="128k", a_samplingrate=22050, a_channels=2, v_bitrate="256k", v_framerate=15, v_resolution="320x240", v_dar="4:3") - - thumb_extractor = config.THUMB_EXTRACTOR_CLASS(sys.argv[1]) - #print thumb_extractor.get_video_duration() - #thumb_extractor.extract_random_thumb() - print thumb_extractor.extract_summary_thumbs(5) + # Jobs queue. + queue = Queue() + + # The BitTorrent object implements a NextShare (Tribler) BitTorrent client + # for seeding, downloading etc. + bit_torrent = bt.BitTorrent() + + # Worker thread. + ci_worker = CIWorker(queue, bit_torrent) + ci_worker.daemon = True + ci_worker.start() + + while True: + raw_video = sys.stdin.readline().strip() + if raw_video == 'x': + break + + container = 'webm' + a_codec = 'vorbis' + a_bitrate = '128k' + v_codec = 'vp8' + v_bitrate = '480k' + v_resolution = '640x480' + + name = raw_video[:raw_video.rindex('.')] + transcode_config = { + 'container': container, + 'a_codec': a_codec, + 'a_bitrate': a_bitrate, + 'v_codec': v_codec, + 'v_bitrate': v_bitrate, + 'v_resolution': v_resolution + } + thumbs = 4 + + job = { + 'raw_video': raw_video, + 'name': name, + 'transcode_configs': [transcode_config], + 'thumbs': thumbs + } + + queue.put(job) + + queue.join()