def song(id, ext):
song = (
db.session.query(
Song.id, Song.filename, Song.length, Song.mimetype, Song.artist, Song.album, Song.title, Song.track
)
.filter(Song.id == id)
.first()
)
if song == None or not os.path.exists(song.filename):
return abort(404)
headers = Headers()
headers.add("X-Content-Duration", song.length)
headers.add("X-Accel-Buffering", "no")
range_header = request.headers.get("Range", None)
if range_header is not None:
range_header = range_header.split("-")
try:
range_header = intval(range_header[0])
except:
range_header = None
if range_header is None or range_header == 0:
db.session.add(Download(song, request))
db.session.commit()
ext = ext.lower()
for extension, mimeset in mimetypes.items():
if song.mimetype in mimeset and extension == ext:
return send_file_partial(
song.filename,
mimetype=song.mimetype,
attachment_filename=generate_download_filename(song, ext),
headers=headers,
)
if ext not in ["ogg", "mp3", "flac", "wav", "webm"]:
return abort(404)
transcode_options = ["ffmpeg", "-loglevel", "quiet", "-i", song.filename, "-f", ext, "-y"]
if ext == "ogg" or ext == "webm":
transcode_options.extend(["-acodec", "libvorbis", "-aq", "5"])
elif ext == "mp3":
transcode_options.extend(["-ab", "160k"])
transcode_options.append("-")
return send_process(
transcode_options,
mimetype=mimetypes[ext][0],
attachment_filename=generate_download_filename(song, ext),
headers=headers,
)
def do_zip():
central_directory = ""
offset = 0
count = 0
for song in songs:
if not os.path.exists(song.filename):
continue
count += 1
filename, ext = os.path.splitext(song.filename)
if ext[0] == '.' and len(ext) > 1:
ext = ext[1:]
filename = generate_download_filename(song, ext)
file = open(song.filename, 'rb')
yield "\x50\x4b\x03\x04" #local file header signature
yield "\x14\x00" #version needed to extract
yield "\x00\x00" #general purpose bit flag
yield "\x00\x00" #compression method
yield "\x00\x00" #last mod file time
yield "\x00\x00" #last mod file date
crc32 = 0
while True:
data = file.read(8192)
if not data:
break
crc32 = crc32sum(data, crc32)
file.seek(0)
crc32 = pack("<I", crc32 & 0xffffffff)
yield crc32 #crc-32
size = os.path.getsize(song.filename)
yield pack("<I", size) #compressed size
yield pack("<I", size) #uncompressed size
yield pack("<H", len(filename)) #file name length
yield "\x00\x00" #extra field length
yield filename #file name
while True:
data = file.read(8192)
if not data:
break
yield data #file data
central_directory += "\x50\x4b\x01\x02"
central_directory += "\x00\x00" #version made by
central_directory += "\x14\x00" #version needed to extract
central_directory += "\x00\x00" #gen purpose bit flag
central_directory += "\x00\x00" #compression method
central_directory += "\x00\x00" #last mod file time
central_directory += "\x00\x00" #last mod file date
central_directory += crc32 #crc-32
central_directory += pack("<I", size) #compressed filesize
central_directory += pack("<I", size) #uncompressed filesize
central_directory += pack("<H", len(filename)) #length of filename
central_directory += "\x00\x00" #extra field length
central_directory += "\x00\x00" #file comment length
central_directory += "\x00\x00" #disk number start
central_directory += "\x00\x00" #internal file attributes
central_directory += "\x20\x00\x00\x00" #external file attributes - 'archive' bit set (32)
central_directory += pack("<I", offset) #relative offset of local header
offset += 30 + len(filename) + size
central_directory += filename
file.close()
yield central_directory #central directory
yield "\x50\x4b\x05\x06" #end of central directory signature
yield "\x00\x00" #number of this disk
yield "\x00\x00" #number of the disk with the start of the central directory
yield pack("<H", count) #number of entries on disk
yield pack("<H", count) #number of entries
yield pack("<I", len(central_directory)) #size of central directory
yield pack("<I", offset) #offset to start of central directory
yield "\x00\x00" #zip comment size
def song(id, ext):
song = db.session.query(Song.id, Song.filename, Song.length, Song.mimetype, Song.artist, Song.album, Song.title, Song.track).filter(Song.id == id).first()
if song == None or not os.path.exists(song.filename):
return abort(404)
headers = Headers()
headers.add("X-Content-Duration", song.length)
headers.add("X-Accel-Buffering", "no")
range_header = request.headers.get('Range', None)
if range_header is not None:
range_header = range_header.split("-")
try:
range_header = intval(range_header[0])
except:
range_header = None
if range_header is None or range_header == 0:
db.session.add(Download(song, request))
db.session.commit()
ext = ext.lower()
for extension, mimeset in mimetypes.items():
if song.mimetype in mimeset and extension == ext:
return send_file_partial(song.filename, mimetype=song.mimetype, attachment_filename=generate_download_filename(song, ext), headers=headers)
if ext not in [ "ogg", "mp3", "flac", "wav", "webm" ]:
return abort(404)
transcode_options = [ 'avconv', '-loglevel', 'quiet', '-i', song.filename, '-f', ext, '-y', '-fflags', 'nobuffer' ];
if ext == "ogg" or ext == "webm":
transcode_options.extend([ '-acodec', 'libvorbis', '-aq', '5' ])
elif ext == "mp3":
transcode_options.extend([ '-ab', '160k' ])
transcode_options.append('-')
return send_process(transcode_options, mimetype=mimetypes[ext][0], attachment_filename=generate_download_filename(song, ext), headers=headers)
