HOWEVER, there are two issues. Using the --start-time and --stop-time switches using the default cue interpreter rounds down times to the nearest second. I don't know why this is - did an older version of vlc require an integer here? Removing the math.floor() function from cue.lua fixes it as expected. Issue 2 is that even though this fix finds the start and end of each track correctly when playing the file, it doesn't work when streaming. Vlc seems by default to round start times down to the nearest 10 seconds and round stop times up similarly. So each mp3 has a few seconds of the previous track at the beginning and a few seconds of the next track at the end. It would be good to know why this is, and whether it can be fixed. Meanwhile this script is useless
but I thought I would put it out for discussion.Code: Select all
--[[
Parse CUE file and transcode each track to mp3
$Id$
Copyright (C) 2014 Graham Horner
using code Copyright (C) 2009 Laurent Aimar
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
--]]
-- Probe function.
function probe()
if( not string.match( string.upper( vlc.path ), ".CUE2MP3$" ) ) then
return false
end
header = vlc.peek( 2048 )
return string.match( header, "FILE.*WAVE%s*[\r\n]+" ) or
string.match( header, "FILE.*AIFF%s*[\r\n]+" ) or
string.match( header, "FILE.*MP3%s*[\r\n]+" )
end
-- Helpers
function is_utf8( src )
return vlc.strings.from_charset( "UTF-8", src ) == src
end
function cue_string( src )
if not is_utf8( src ) then
-- Convert to UTF-8 since it's probably Latin1
src = vlc.strings.from_charset( "ISO_8859-1", src )
end
local sub = string.match( src, "^\"(.*)\".*$" );
if( sub ) then
return sub
end
return string.match( src, "^(%S+).*$" )
end
function cue_path( src )
if( string.match( src, "^/" ) or
string.match( src, "^\\" ) or
string.match( src, "^[%l%u]:\\" ) ) then
return string.sub( vlc.strings.make_uri(src), 1 )
end
local slash = string.find( string.reverse( vlc.path ), '/' )
local prefix = vlc.access .. "://" .. string.sub( vlc.path, 1, -slash )
-- FIXME: postfix may not be encoded correctly (esp. slashes)
local postfix = vlc.strings.encode_uri_component(src)
return prefix .. postfix
end
function cue_track( global, track )
if( track.index01 == nil ) then
return nil
end
t = {}
t.path = cue_path( track.file or global.file )
t.title = track.title or global.title
t.name = track.title or global.title
t.album = global.title
t.artist = track.performer or global.performer
t.genre = track.genre or global.genre
t.date = track.date or global.date
t.description = global.comment
t.tracknum = track.num
-- we need to construct the full file path for the destination using vlc.path
-- vlc.path is written with forward slashes and has a slash at the beginning, before C:/
local slash = string.find( string.reverse( vlc.path ), '/' )
local filepath = string.sub( vlc.path, 2, -slash ) .. track.num .. " " ..
string.gsub(track.title, "[\\/?:*\"><|]" , "-") .. ".mp3"
if( string.find(track.file, "\\") ) then -- track.file seems the only place where the platform filesystem separators are preserved
filepath = string.gsub(filepath, "/", "\\")
end
t.options = { ":start-time=" .. track.index01 , -- rounding down removed here
':sout=#transcode{vcodec=none,acodec=mp3,ab=192,channels=2,samplerate=44100}:std{access=file,mux=raw,dst="' ..
filepath ..'"' }
return t
end
function cue_append( tracks, global, track )
local t = cue_track( global, track )
if( t ~= nil ) then
if( #tracks > 0 ) then
local prev = tracks[#tracks]
table.insert( prev.options, ':stop-time=' .. track.index01 ) -- rounding down removed here
end
table.insert( tracks, t )
end
end
-- Parse function.
function parse()
p = {}
global_data = nil
data = {}
file = nil
while true
do
line = vlc.readline()
if not line then break end
cmd, arg = string.match( line, "^%s*(%S+)%s*(.*)$" )
if( cmd == "REM" and arg ) then
subcmd, value = string.match( arg, "^(%S+)%s*(.*)$" )
if( subcmd == "GENRE" and value ) then
data.genre = cue_string( value )
elseif( subcmd == "DATE" and value ) then
data.date = cue_string( value )
elseif( subcmd == "COMMENT" and value ) then
data.comment = cue_string( value )
end
elseif( cmd == "PERFORMER" and arg ) then
data.performer = cue_string( arg )
elseif( cmd == "TITLE" and arg ) then
data.title = cue_string( arg )
elseif( cmd == "FILE" ) then
file = cue_string( arg )
elseif( cmd == "TRACK" ) then
if( not global_data ) then
global_data = data
else
cue_append( p, global_data, data )
end
data = { file = file, num = string.match( arg, "^(%d+)" ) }
elseif( cmd == "INDEX" ) then
local idx, m, s, f = string.match( arg, "(%d+)%s+(%d+):(%d+):(%d+)" )
if( idx == "01" and m ~= nil and s ~= nil and f ~= nil ) then
data.index01 = m * 60 + s + f / 75
end
end
end
cue_append( p, global_data, data )
return p
end