mirror of
https://github.com/spl0k/supysonic.git
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209 lines
6.9 KiB
Python
209 lines
6.9 KiB
Python
# coding: utf-8
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from flask import request, send_file, Response
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import requests
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import os.path
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from PIL import Image
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import subprocess
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import codecs
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from xml.etree import ElementTree
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import config, scanner
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from web import app
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from db import Track, Album, Artist, Folder, User, ClientPrefs, now, session
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from api import get_entity
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from sqlalchemy import func
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def prepare_transcoding_cmdline(base_cmdline, input_file, input_format, output_format, output_bitrate):
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if not base_cmdline:
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return None
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ret = base_cmdline.split()
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for i in xrange(len(ret)):
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ret[i] = ret[i].replace('%srcpath', input_file).replace('%srcfmt', input_format).replace('%outfmt', output_format).replace('%outrate', str(output_bitrate))
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return ret
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@app.route('/rest/stream.view', methods = [ 'GET', 'POST' ])
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def stream_media():
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status, res = get_entity(request, Track)
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if not status:
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return res
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maxBitRate, format, timeOffset, size, estimateContentLength, client = map(request.args.get, [ 'maxBitRate', 'format', 'timeOffset', 'size', 'estimateContentLength', 'c' ])
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if format:
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format = format.lower()
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src_suffix = res.suffix()
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dst_suffix = res.suffix()
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dst_bitrate = res.bitrate
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dst_mimetype = res.content_type
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if client:
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prefs = ClientPrefs.query.get((request.user.id, client))
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if not prefs:
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prefs = ClientPrefs(user_id = request.user.id, client_name = client)
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session.add(prefs)
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if prefs.format:
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dst_suffix = prefs.format
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if prefs.bitrate and prefs.bitrate < dst_bitrate:
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dst_bitrate = prefs.bitrate
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if maxBitRate:
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try:
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maxBitRate = int(maxBitRate)
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except:
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return request.error_formatter(0, 'Invalid bitrate value')
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if dst_bitrate > maxBitRate and maxBitRate != 0:
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dst_bitrate = maxBitRate
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if format and format != 'raw' and format != src_suffix:
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dst_suffix = format
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dst_mimetype = scanner.get_mime(dst_suffix)
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if format != 'raw' and (dst_suffix != src_suffix or dst_bitrate != res.bitrate):
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transcoder = config.get('transcoding', 'transcoder_{}_{}'.format(src_suffix, dst_suffix))
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decoder = config.get('transcoding', 'decoder_' + src_suffix) or config.get('transcoding', 'decoder')
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encoder = config.get('transcoding', 'encoder_' + dst_suffix) or config.get('transcoding', 'encoder')
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if not transcoder and (not decoder or not encoder):
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transcoder = config.get('transcoding', 'transcoder')
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if not transcoder:
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return request.error_formatter(0, 'No way to transcode from {} to {}'.format(src_suffix, dst_suffix))
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transcoder, decoder, encoder = map(lambda x: prepare_transcoding_cmdline(x, res.path, src_suffix, dst_suffix, dst_bitrate), [ transcoder, decoder, encoder ])
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try:
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if transcoder:
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proc = subprocess.Popen(transcoder, stdout = subprocess.PIPE)
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else:
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dec_proc = subprocess.Popen(decoder, stdout = subprocess.PIPE)
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proc = subprocess.Popen(encoder, stdin = dec_proc.stdout, stdout = subprocess.PIPE)
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except:
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return request.error_formatter(0, 'Error while running the transcoding process')
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def transcode():
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while True:
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data = proc.stdout.read(8192)
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if not data:
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break
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yield data
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proc.terminate()
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proc.wait()
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app.logger.info('Transcoding track {0.id} for user {1.id}. Source: {2} at {0.bitrate}kbps. Dest: {3} at {4}kbps'.format(res, request.user, src_suffix, dst_suffix, dst_bitrate))
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response = Response(transcode(), mimetype = dst_mimetype)
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else:
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response = send_file(res.path, mimetype = dst_mimetype)
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res.play_count = res.play_count + 1
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res.last_play = now()
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request.user.last_play = res
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request.user.last_play_date = now()
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session.commit()
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return response
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@app.route('/rest/download.view', methods = [ 'GET', 'POST' ])
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def download_media():
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status, res = get_entity(request, Track)
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if not status:
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return res
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return send_file(res.path)
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@app.route('/rest/getCoverArt.view', methods = [ 'GET', 'POST' ])
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def cover_art():
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status, res = get_entity(request, Folder)
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if not status:
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return res
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if not res.has_cover_art or not os.path.isfile(os.path.join(res.path, 'cover.jpg')):
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return request.error_formatter(70, 'Cover art not found')
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size = request.args.get('size')
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if size:
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try:
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size = int(size)
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except:
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return request.error_formatter(0, 'Invalid size value')
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else:
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return send_file(os.path.join(res.path, 'cover.jpg'))
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im = Image.open(os.path.join(res.path, 'cover.jpg'))
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if size > im.size[0] and size > im.size[1]:
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return send_file(os.path.join(res.path, 'cover.jpg'))
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size_path = os.path.join(config.get('base', 'cache_dir'), str(size))
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path = os.path.join(size_path, str(res.id))
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if os.path.exists(path):
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return send_file(path)
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if not os.path.exists(size_path):
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os.makedirs(size_path)
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im.thumbnail([size, size], Image.ANTIALIAS)
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im.save(path, 'JPEG')
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return send_file(path)
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@app.route('/rest/getLyrics.view', methods = [ 'GET', 'POST' ])
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def lyrics():
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artist, title = map(request.args.get, [ 'artist', 'title' ])
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if not artist:
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return request.error_formatter(10, 'Missing artist parameter')
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if not title:
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return request.error_formatter(10, 'Missing title parameter')
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query = Track.query.join(Album, Artist).filter(func.lower(Track.title) == title.lower() and func.lower(Artist.name) == artist.lower())
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for track in query:
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lyrics_path = os.path.splitext(track.path)[0] + '.txt'
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if os.path.exists(lyrics_path):
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app.logger.debug('Found lyrics file: ' + lyrics_path)
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try:
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lyrics = read_file_as_unicode(lyrics_path)
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except UnicodeError:
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# Lyrics file couldn't be decoded. Rather than displaying an error, try with the potential next files or
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# return no lyrics. Log it anyway.
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app.logger.warn('Unsupported encoding for lyrics file ' + lyrics_path)
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continue
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return request.formatter({ 'lyrics': {
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'artist': track.album.artist.name,
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'title': track.title,
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'_value_': lyrics
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} })
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try:
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r = requests.get("http://api.chartlyrics.com/apiv1.asmx/SearchLyricDirect",
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params = { 'artist': artist, 'song': title })
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root = ElementTree.fromstring(r.content)
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ns = { 'cl': 'http://api.chartlyrics.com/' }
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return request.formatter({ 'lyrics': {
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'artist': root.find('cl:LyricArtist', namespaces = ns).text,
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'title': root.find('cl:LyricSong', namespaces = ns).text,
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'_value_': root.find('cl:Lyric', namespaces = ns).text
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} })
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except requests.exceptions.RequestException, e:
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app.logger.warn('Error while requesting the ChartLyrics API: ' + str(e))
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return request.formatter({ 'lyrics': {} })
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def read_file_as_unicode(path):
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""" Opens a file trying with different encodings and returns the contents as a unicode string """
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encodings = [ 'utf-8', 'latin1' ] # Should be extended to support more encodings
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for enc in encodings:
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try:
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contents = codecs.open(path, 'r', encoding = enc).read()
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app.logger.debug('Read file {} with {} encoding'.format(path, enc))
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# Maybe save the encoding somewhere to prevent going through this loop each time for the same file
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return contents
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except UnicodeError:
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pass
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# Fallback to ASCII
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app.logger.debug('Reading file {} with ascii encoding'.format(path))
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return unicode(open(path, 'r').read())
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