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/*
* Cue Sheet Plugin for Audacious
* Copyright (c) 2009-2015 William Pitcock and John Lindgren
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions, and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions, and the following disclaimer in the documentation
* provided with the distribution.
*
* This software is provided "as is" and without any warranty, express or
* implied. In no event shall the authors be liable for any damages arising from
* the use of this software.
*/
#include <string.h>
#include <pthread.h>
#ifdef HAVE_LIBCUE2
#include <libcue.h>
#else
extern "C" {
#include <libcue/libcue.h>
}
#endif
#include <libaudcore/audstrings.h>
#include <libaudcore/i18n.h>
#include <libaudcore/plugin.h>
#include <libaudcore/probe.h>
#include <libaudcore/runtime.h>
static const char * const cue_exts[] = {"cue"};
class CueLoader : public PlaylistPlugin
{
public:
static constexpr PluginInfo info = {N_("Cue Sheet Plugin"), PACKAGE};
constexpr CueLoader () : PlaylistPlugin (info, cue_exts, false) {}
bool load (const char * filename, VFSFile & file, String & title,
Index<PlaylistAddItem> & items);
};
EXPORT CueLoader aud_plugin_instance;
static bool is_year (const char * s)
{
auto is_digit = [] (char c)
{ return c >= '0' && c <= '9'; };
return is_digit (s[0]) && is_digit (s[1]) &&
is_digit (s[2]) && is_digit (s[3]) && ! s[4];
}
bool CueLoader::load (const char * cue_filename, VFSFile & file, String & title,
Index<PlaylistAddItem> & items)
{
// XXX: cue_parse_string crashes if called concurrently
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
Index<char> buffer = file.read_all ();
if (! buffer.len ())
return false;
buffer.append (0); /* null-terminate */
pthread_mutex_lock (& mutex);
Cd * cd = cue_parse_string (buffer.begin ());
pthread_mutex_unlock (& mutex);
int tracks = cd ? cd_get_ntrack (cd) : 0;
if (tracks < 1)
return false;
Track * cur = cd_get_track (cd, 1);
const char * cur_name = cur ? track_get_filename (cur) : nullptr;
if (! cur_name)
return false;
bool same_file = false;
String filename;
PluginHandle * decoder = nullptr;
Tuple base_tuple;
for (int track = 1; track <= tracks; track ++)
{
if (! same_file)
{
filename = String (uri_construct (cur_name, cue_filename));
decoder = nullptr;
base_tuple = Tuple ();
VFSFile file;
if (filename)
decoder = aud_file_find_decoder (filename, false, file);
else
AUDWARN ("Unable to construct URI for track '%s' in cuesheet '%s'\n",
cur_name, cue_filename);
if (decoder && aud_file_read_tag (filename, decoder, file, base_tuple))
{
Cdtext * cdtext = cd_get_cdtext (cd);
if (cdtext)
{
const char * s;
if ((s = cdtext_get (PTI_PERFORMER, cdtext)))
base_tuple.set_str (Tuple::AlbumArtist, s);
if ((s = cdtext_get (PTI_TITLE, cdtext)))
base_tuple.set_str (Tuple::Album, s);
if ((s = cdtext_get (PTI_GENRE, cdtext)))
base_tuple.set_str (Tuple::Genre, s);
if ((s = cdtext_get (PTI_COMPOSER, cdtext)))
base_tuple.set_str (Tuple::Composer, s);
}
Rem * rem = cd_get_rem (cd);
if (rem)
{
const char * s;
if ((s = rem_get (REM_DATE, rem)))
{
if (is_year (s))
base_tuple.set_int (Tuple::Year, str_to_int (s));
else
base_tuple.set_str (Tuple::Date, s);
}
if ((s = rem_get (REM_REPLAYGAIN_ALBUM_GAIN, rem)))
base_tuple.set_gain (Tuple::AlbumGain, Tuple::GainDivisor, s);
if ((s = rem_get (REM_REPLAYGAIN_ALBUM_PEAK, rem)))
base_tuple.set_gain (Tuple::AlbumPeak, Tuple::PeakDivisor, s);
}
}
}
Track * next = (track + 1 <= tracks) ? cd_get_track (cd, track + 1) : nullptr;
const char * next_name = next ? track_get_filename (next) : nullptr;
same_file = (next_name && ! strcmp (next_name, cur_name));
if (base_tuple.valid ())
{
StringBuf tfilename = str_printf ("%s?%d", (const char *) cue_filename, track);
Tuple tuple = base_tuple.ref ();
tuple.set_filename (tfilename);
tuple.set_int (Tuple::Track, track);
tuple.set_str (Tuple::AudioFile, filename);
int begin = (int64_t) track_get_start (cur) * 1000 / 75;
tuple.set_int (Tuple::StartTime, begin);
if (same_file)
{
int end = (int64_t) track_get_start (next) * 1000 / 75;
tuple.set_int (Tuple::EndTime, end);
tuple.set_int (Tuple::Length, end - begin);
}
else
{
int length = base_tuple.get_int (Tuple::Length);
if (length > 0)
tuple.set_int (Tuple::Length, length - begin);
}
Cdtext * cdtext = track_get_cdtext (cur);
if (cdtext)
{
const char * s;
if ((s = cdtext_get (PTI_PERFORMER, cdtext)))
tuple.set_str (Tuple::Artist, s);
if ((s = cdtext_get (PTI_TITLE, cdtext)))
tuple.set_str (Tuple::Title, s);
if ((s = cdtext_get (PTI_GENRE, cdtext)))
tuple.set_str (Tuple::Genre, s);
}
Rem * rem = track_get_rem (cur);
if (rem)
{
const char * s;
if ((s = rem_get (REM_REPLAYGAIN_TRACK_GAIN, rem)))
tuple.set_gain (Tuple::TrackGain, Tuple::GainDivisor, s);
if ((s = rem_get (REM_REPLAYGAIN_TRACK_PEAK, rem)))
tuple.set_gain (Tuple::TrackPeak, Tuple::PeakDivisor, s);
}
items.append (String (tfilename), std::move (tuple), decoder);
}
if (! next_name)
break;
cur = next;
cur_name = next_name;
}
return true;
}
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