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adplug-xmms.cc
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adplug-xmms.cc
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/*
AdPlug/XMMS - AdPlug XMMS Plugin
Copyright (C) 2002, 2003 Simon Peter <dn.tlp@gmx.net>
AdPlug/XMMS is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This plugin 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this plugin; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <algorithm>
#include <sstream>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "adplug.h"
#include "emuopl.h"
#include "silentopl.h"
#include "players.h"
#include <libaudcore/input.h>
#include <libaudcore/runtime.h>
#include <libaudcore/i18n.h>
#include <libaudcore/audstrings.h>
#include "adplug-xmms.h"
/***** Defines *****/
// Version string
#define ADPLUG_NAME "AdPlug (AdLib Sound Player)"
// Sound buffer size in samples
#define SNDBUFSIZE 512
// AdPlug's 8 and 16 bit audio formats
#define FORMAT_8 FMT_U8
#define FORMAT_16 FMT_S16_NE
// Default file name of AdPlug's database file
#define ADPLUGDB_FILE "adplug.db"
// Default AdPlug user's configuration subdirectory
#define ADPLUG_CONFDIR ".adplug"
/***** Global variables *****/
static bool audio_error = false;
// Configuration (and defaults)
static struct
{
int freq;
bool bit16, stereo, endless;
CPlayers players;
} conf =
{
44100l, true, false, false, CAdPlug::getPlayers()};
// Player variables
static struct
{
CPlayer *p;
CAdPlugDatabase *db;
unsigned int subsong, songlength;
char * filename;
} plr = {0, 0, 0, 0, nullptr};
/***** Debugging *****/
#ifdef DEBUG
#include <stdarg.h>
static void
dbg_printf (const char *fmt, ...)
{
va_list argptr;
va_start (argptr, fmt);
vfprintf (stderr, fmt, argptr);
va_end (argptr);
}
#else
static void
dbg_printf (const char *fmt, ...)
{
}
#endif
static CPlayer *
factory (VFSFile & fd, Copl * newopl)
{
return CAdPlug::factory (fd, newopl, conf.players);
}
/***** Main player (!! threaded !!) *****/
Tuple adplug_get_tuple (const char * filename, VFSFile & fd)
{
Tuple tuple;
CSilentopl tmpopl;
if (!fd)
return tuple;
CPlayer *p = factory (fd, &tmpopl);
if (p)
{
tuple.set_filename (filename);
if (! p->getauthor().empty())
tuple.set_str (FIELD_ARTIST, p->getauthor().c_str());
if (! p->gettitle().empty())
tuple.set_str (FIELD_TITLE, p->gettitle().c_str());
else if (! p->getdesc().empty())
tuple.set_str (FIELD_TITLE, p->getdesc().c_str());
tuple.set_str (FIELD_CODEC, p->gettype().c_str());
tuple.set_str (FIELD_QUALITY, _("sequenced"));
tuple.set_int (FIELD_LENGTH, p->songlength (plr.subsong));
delete p;
}
return tuple;
}
// Define sampsize macro (only usable inside play_loop()!)
#define sampsize ((bit16 ? 2 : 1) * (stereo ? 2 : 1))
static bool play_loop (const char * filename, VFSFile & fd)
/* Main playback thread. Takes the filename to play as argument. */
{
dbg_printf ("play_loop(\"%s\"): ", filename);
CEmuopl opl (conf.freq, conf.bit16, conf.stereo);
long toadd = 0, i, towrite;
char *sndbuf, *sndbufpos;
bool playing = true, // Song self-end indicator.
bit16 = conf.bit16, // Duplicate config, so it doesn't affect us if
stereo = conf.stereo; // the user changes it while we're playing.
unsigned long freq = conf.freq;
if (!fd)
return false;
// Try to load module
dbg_printf ("factory, ");
if (!(plr.p = factory (fd, &opl)))
{
dbg_printf ("error!\n");
// MessageBox("AdPlug :: Error", "File could not be opened!", "Ok");
return false;
}
// reset to first subsong on new file
dbg_printf ("subsong, ");
if (! plr.filename || strcmp (filename, plr.filename))
{
free (plr.filename);
plr.filename = strdup (filename);
plr.subsong = 0;
}
// Allocate audio buffer
dbg_printf ("buffer, ");
sndbuf = (char *) malloc (SNDBUFSIZE * sampsize);
// Set XMMS main window information
dbg_printf ("xmms, ");
aud_input_set_bitrate (freq * sampsize * 8);
// Rewind player to right subsong
dbg_printf ("rewind, ");
plr.p->rewind (plr.subsong);
// main playback loop
dbg_printf ("loop.\n");
while ((playing || conf.endless))
{
if (aud_input_check_stop ())
break;
int seek = aud_input_check_seek ();
// seek requested ?
if (seek != -1)
{
int time = aud_input_written_time ();
// backward seek ?
if (seek < time)
{
plr.p->rewind (plr.subsong);
time = 0;
}
// seek to requested position
while (time < seek && plr.p->update ())
time += (int) (1000 / plr.p->getrefresh ());
}
// fill sound buffer
towrite = SNDBUFSIZE;
sndbufpos = sndbuf;
while (towrite > 0)
{
while (toadd < 0)
{
toadd += freq;
playing = plr.p->update ();
}
i = std::min (towrite, (long) (toadd / plr.p->getrefresh () + 4) & ~3);
opl.update ((short *) sndbufpos, i);
sndbufpos += i * sampsize;
towrite -= i;
toadd -= (long) (plr.p->getrefresh () * i);
}
aud_input_write_audio (sndbuf, SNDBUFSIZE * sampsize);
}
// free everything and exit
dbg_printf ("free");
delete plr.p;
plr.p = 0;
free (sndbuf);
dbg_printf (".\n");
return true;
}
// sampsize macro not useful anymore.
#undef sampsize
/***** Informational *****/
bool
adplug_is_our_fd (const char * filename, VFSFile & fd)
{
CSilentopl tmpopl;
CPlayer *p = factory (fd, &tmpopl);
dbg_printf ("adplug_is_our_file(\"%s\"): returned ", filename);
if (p)
{
delete p;
dbg_printf ("true\n");
return true;
}
dbg_printf ("false\n");
return false;
}
/***** Player control *****/
bool
adplug_play (const char * filename, VFSFile & file)
{
dbg_printf ("adplug_play(\"%s\"): ", filename);
audio_error = false;
// open output plugin
dbg_printf ("open, ");
if (!aud_input_open_audio (conf.bit16 ? FORMAT_16 : FORMAT_8, conf.freq, conf.stereo ? 2 : 1))
{
audio_error = true;
return true;
}
play_loop (filename, file);
return false;
}
/***** Configuration file handling *****/
#define CFG_VERSION "AdPlug"
static const char * const adplug_defaults[] = {
"16bit", "TRUE",
"Stereo", "FALSE",
"Frequency", "44100",
"Endless", "FALSE",
nullptr};
bool adplug_init (void)
{
aud_config_set_defaults (CFG_VERSION, adplug_defaults);
conf.bit16 = aud_get_bool (CFG_VERSION, "16bit");
conf.stereo = aud_get_bool (CFG_VERSION, "Stereo");
conf.freq = aud_get_int (CFG_VERSION, "Frequency");
conf.endless = aud_get_bool (CFG_VERSION, "Endless");
// Read file type exclusion list
dbg_printf ("exclusion, ");
{
String cfgstr = aud_get_str (CFG_VERSION, "Exclude");
if (cfgstr[0])
{
StringBuf exclude = str_concat ({cfgstr, ":"});
str_replace_char (exclude, ':', 0);
for (char * p = exclude; * p; p += strlen (p) + 1)
conf.players.remove (conf.players.lookup_filetype (p));
}
}
// Load database from disk and hand it to AdPlug
dbg_printf ("database");
plr.db = new CAdPlugDatabase;
{
const char *homedir = getenv ("HOME");
if (homedir)
{
std::string userdb;
userdb = std::string ("file://") + homedir + "/" ADPLUG_CONFDIR "/" + ADPLUGDB_FILE;
if (VFSFile::test_file (userdb.c_str (), VFS_EXISTS))
{
plr.db->load (userdb); // load user's database
dbg_printf (" (userdb=\"%s\")", userdb.c_str());
}
}
}
CAdPlug::set_database (plr.db);
dbg_printf (".\n");
return true;
}
void
adplug_quit (void)
{
// Close database
dbg_printf ("db, ");
if (plr.db)
delete plr.db;
free (plr.filename);
plr.filename = nullptr;
aud_set_bool (CFG_VERSION, "16bit", conf.bit16);
aud_set_bool (CFG_VERSION, "Stereo", conf.stereo);
aud_set_int (CFG_VERSION, "Frequency", conf.freq);
aud_set_bool (CFG_VERSION, "Endless", conf.endless);
dbg_printf ("exclude, ");
std::string exclude;
for (CPlayers::const_iterator i = CAdPlug::getPlayers().begin ();
i != CAdPlug::getPlayers().end (); i++)
if (find (conf.players.begin (), conf.players.end (), *i) ==
conf.players.end ())
{
if (!exclude.empty ())
exclude += ":";
exclude += (*i)->filetype;
}
aud_set_str (CFG_VERSION, "Exclude", exclude.c_str ());
}