encoding.py 5.45 KB
Newer Older
1
from server import *
Julian Rother's avatar
Julian Rother committed
2
import os.path
3

Julian Rother's avatar
Julian Rother committed
4
def set_metadata(dest, course, lecture):
5
	chapters = query('SELECT text, time FROM chapters WHERE lecture_id = ? AND visible ORDER BY time', lecture['id'])
6 7 8 9
	metadata = {'title': lecture['title'], 'album': course['title'],
		'description': lecture['comment'],
		'date': lecture['time'].strftime('%m/%d/%Y'),
		'artist': lecture['speaker'] if lecture['speaker'] else course['organizer']}
Julian Rother's avatar
Julian Rother committed
10 11 12
	dest['metadata'] = metadata
	dest['chapters'] = chapters

13
def schedule_remux(lectureid, videoid=None):
Julian Rother's avatar
Julian Rother committed
14 15 16 17 18 19 20
	lecture = query('SELECT * FROM lectures WHERE id = ?', lectureid)[0]
	course = query('SELECT * FROM courses WHERE id = ?', lecture['course_id'])[0]
	videos = query('''SELECT videos.*, sources.path AS srcpath, sources.hash AS srchash, formats.options AS fmtopts
			FROM videos
			JOIN sources ON videos.source = sources.id
			JOIN formats ON videos.video_format = formats.id
			WHERE videos.lecture_id = ?''', lectureid)
21 22 23
	for video in videos:
		if not video['source']:
			continue
24 25
		if videoid and video['id'] != videoid:
			continue
Julian Rother's avatar
Julian Rother committed
26 27
		data = {'path': video['path'], 'srcpath': video['srcpath'],
			'srchash': video['srchash'], 'video_id': video['id']}
Julian Rother's avatar
Julian Rother committed
28 29 30 31 32
		fmt = json.loads(video['fmtopts'])
		if 'format' in fmt:
			data['format'] = fmt['format']
		data['options'] = fmt.get('options', {})
		set_metadata(data, course, lecture)
33
		schedule_job('remux', data)
34 35 36 37 38 39 40 41 42 43 44

@app.route('/internal/jobs/add/remux', methods=['GET', 'POST'])
@mod_required
@csrf_protect
def add_remux_job():
	lectureid = request.values.get('lectureid')
	videoid = int(request.values.get('videoid', 0))
	if not lectureid:
		lectureid = query('SELECT lecture_id FROM videos WHERE id = ?', videoid)[0]['lecture_id']
	schedule_remux(lectureid, videoid)
	return redirect(request.values.get('ref', url_for('jobs_overview')))
45

Julian Rother's avatar
Julian Rother committed
46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65
def schedule_transcode(source, fmt_id=None, video=None):
	if video:
		fmt_id = video['video_format']
		assert(video['lecture_id'] == source['lecture_id'])
	assert(fmt_id != None)
	fmt = query('SELECT * FROM formats WHERE id = ?', fmt_id)[0]
	lecture = query('SELECT * FROM lectures WHERE id = ?', source['lecture_id'])[0]
	course = query('SELECT * FROM courses WHERE id = ?', lecture['course_id'])[0]
	data = {'input': {'path': source['path'], 'streams': []}, 'output': json.loads(fmt['options']), 'filters': []}
	if source['type'] == 'plain':
		stream = {'name': 'video', 'type': 'video'}
		data['input']['streams'].append(stream)
		stream = {'name': 'audio', 'type': 'audio'}
		data['input']['streams'].append(stream)
	else:
		assert(False)
	set_metadata(data['output'], course, lecture)
	basename = os.path.basename(source['path']).rsplit('.', 1)[0]
	data['output']['path'] = 'pub/'+course['handle']+'/'+basename+fmt['suffix']
	if video:
66
		old_source = query('SELECT * FROM sources WHERE id = ?', video['source'])[0]
Julian Rother's avatar
Julian Rother committed
67 68 69 70 71 72 73 74
		data['output']['path'] = video['path']
		data['video_id'] = video['id']
		data['srcpath'] = old_source['path']
		data['srchash'] = old_source['hash']
	else:
		data['lecture_id'] = lecture['id']
	data['format_id'] = fmt['id']
	data['source_id'] = source['id']
75
	schedule_job('transcode', data, queue="background")
Julian Rother's avatar
Julian Rother committed
76

77 78 79 80
@app.route('/internal/jobs/add/reencode', methods=['GET', 'POST'])
@mod_required
@csrf_protect
@handle_errors('jobs_overview', 'Video nicht gefunden!', 404, IndexError)
81
def add_reencode_job():
82 83 84 85 86 87 88 89
	video = query('SELECT * FROM videos WHERE id = ?', request.values['videoid'])[0]
	if not video['source']:
		flash('Manuell erstellte Videos können nicht neukodiert werden!')
	else:
		source = query('''SELECT sources.* FROM sources WHERE sources.id = ? ORDER BY time_created''', video['source'])[-1]
		schedule_transcode(source, video=video)
	return redirect(request.values.get('ref', url_for('jobs_overview')))

Julian Rother's avatar
Julian Rother committed
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114
@job_handler('probe-raw')
def update_lecture_videos(jobid, jobtype, data, state, status):
	if 'lecture_id' not in data:
		return
	if 'source_id' not in data:
		modify('INSERT INTO sources (lecture_id, path, type, hash, time_created) VALUES (?, ?, ?, ?, ?)',
				data['lecture_id'], data['path'], 'plain', status['hash'], datetime.now())
	sources = query('SELECT * FROM sources WHERE sources.lecture_id = ? ORDER BY time_created', data['lecture_id'])
	if not sources:
		return
	latest = sources[-1]
	videos = query('SELECT * FROM videos WHERE videos.lecture_id = ?', data['lecture_id'])
	current_fmts = [v['video_format'] for v in videos]
	formats = query('''SELECT formats.* FROM formats
			JOIN profiles ON formats.id = profiles.format
			JOIN courses ON profiles.name = courses.profile
			JOIN lectures ON courses.id = lectures.course_id
			WHERE lectures.id = ?''', data['lecture_id'])
	for fmt in formats:
		if fmt['id'] not in current_fmts:
			schedule_transcode(latest, fmt_id=fmt['id'])
	for video in videos:
		if video['source'] != latest['id']:
			schedule_transcode(latest, video=video)

115
@edit_handler('chapters')
116
def chapter_changed(table, column, value, id, user):
117 118 119 120 121 122 123 124
	chapters = query('SELECT * FROM chapters WHERE id = ?', id)
	if not chapters:
		return
	chapter = chapters[0]
	if column in ['visible', 'deleted'] or (chapter['visible'] and not chapter['deleted']):
		schedule_remux(chapter['lecture_id'])

@edit_handler('courses')
125
def course_changed(table, column, value, id, user):
126 127 128 129 130 131 132
	if column not in ['title', 'organizer']:
		return
	lectures = query('SELECT * FROM lectures WHERE course_id = ?', id)
	for lecture in lectures:
		schedule_remux(lecture['id'])

@edit_handler('lectures')
133
def lecture_changed(table, column, value, id, user):
134 135 136
	if column in ['title', 'comment', 'time', 'speaker']:
		schedule_remux(id)