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/*
* Copyright (C) 2003-2012 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.
*/
/*
* WARNING! This plugin suffers from major shortcomings in the
* libfluidsynth API, which render it practically unusable. For a
* discussion, see the post on the fluidsynth mailing list:
*
* http://www.mail-archive.com/fluid-dev@nongnu.org/msg01099.html
*
*/
#include "config.h"
#include "decoder_api.h"
#include "conf.h"
#include <glib.h>
#include <fluidsynth.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "fluidsynth"
/**
* Convert a fluidsynth log level to a GLib log level.
*/
static GLogLevelFlags
fluidsynth_level_to_glib(enum fluid_log_level level)
{
switch (level) {
case FLUID_PANIC:
case FLUID_ERR:
return G_LOG_LEVEL_CRITICAL;
case FLUID_WARN:
return G_LOG_LEVEL_WARNING;
case FLUID_INFO:
return G_LOG_LEVEL_INFO;
case FLUID_DBG:
case LAST_LOG_LEVEL:
return G_LOG_LEVEL_DEBUG;
}
/* invalid fluidsynth log level */
return G_LOG_LEVEL_MESSAGE;
}
/**
* The fluidsynth logging callback. It forwards messages to the GLib
* logging library.
*/
static void
fluidsynth_mpd_log_function(int level, char *message, G_GNUC_UNUSED void *data)
{
g_log(G_LOG_DOMAIN, fluidsynth_level_to_glib(level), "%s", message);
}
static bool
fluidsynth_init(G_GNUC_UNUSED const struct config_param *param)
{
fluid_set_log_function(LAST_LOG_LEVEL,
fluidsynth_mpd_log_function, NULL);
return true;
}
static void
fluidsynth_file_decode(struct decoder *decoder, const char *path_fs)
{
static const struct audio_format audio_format = {
.sample_rate = 48000,
.format = SAMPLE_FORMAT_S16,
.channels = 2,
};
char setting_sample_rate[] = "synth.sample-rate";
/*
char setting_verbose[] = "synth.verbose";
char setting_yes[] = "yes";
*/
const char *soundfont_path;
fluid_settings_t *settings;
fluid_synth_t *synth;
fluid_player_t *player;
char *path_dup;
int ret;
enum decoder_command cmd;
soundfont_path =
config_get_string("soundfont",
"/usr/share/sounds/sf2/FluidR3_GM.sf2");
/* set up fluid settings */
settings = new_fluid_settings();
if (settings == NULL)
return;
fluid_settings_setnum(settings, setting_sample_rate, 48000);
/*
fluid_settings_setstr(settings, setting_verbose, setting_yes);
*/
/* create the fluid synth */
synth = new_fluid_synth(settings);
if (synth == NULL) {
delete_fluid_settings(settings);
return;
}
ret = fluid_synth_sfload(synth, soundfont_path, true);
if (ret < 0) {
g_warning("fluid_synth_sfload() failed");
delete_fluid_synth(synth);
delete_fluid_settings(settings);
return;
}
/* create the fluid player */
player = new_fluid_player(synth);
if (player == NULL) {
delete_fluid_synth(synth);
delete_fluid_settings(settings);
return;
}
/* temporarily duplicate the path_fs string, because
fluidsynth wants a writable string */
path_dup = g_strdup(path_fs);
ret = fluid_player_add(player, path_dup);
g_free(path_dup);
if (ret != 0) {
g_warning("fluid_player_add() failed");
delete_fluid_player(player);
delete_fluid_synth(synth);
delete_fluid_settings(settings);
return;
}
/* start the player */
ret = fluid_player_play(player);
if (ret != 0) {
g_warning("fluid_player_play() failed");
delete_fluid_player(player);
delete_fluid_synth(synth);
delete_fluid_settings(settings);
return;
}
/* initialization complete - announce the audio format to the
MPD core */
decoder_initialized(decoder, &audio_format, false, -1);
do {
int16_t buffer[2048];
const unsigned max_frames = G_N_ELEMENTS(buffer) / 2;
/* read samples from fluidsynth and send them to the
MPD core */
ret = fluid_synth_write_s16(synth, max_frames,
buffer, 0, 2,
buffer, 1, 2);
/* XXX how do we see whether the player is done? We
can't access the private attribute
player->status */
if (ret != 0)
break;
cmd = decoder_data(decoder, NULL, buffer, sizeof(buffer),
0);
} while (cmd == DECODE_COMMAND_NONE);
/* clean up */
fluid_player_stop(player);
fluid_player_join(player);
delete_fluid_player(player);
delete_fluid_synth(synth);
delete_fluid_settings(settings);
}
static bool
fluidsynth_scan_file(const char *file,
G_GNUC_UNUSED const struct tag_handler *handler,
G_GNUC_UNUSED void *handler_ctx)
{
/* to be implemented */
(void)file;
return true;
}
static const char *const fluidsynth_suffixes[] = {
"mid",
NULL
};
const struct decoder_plugin fluidsynth_decoder_plugin = {
.name = "fluidsynth",
.init = fluidsynth_init,
.file_decode = fluidsynth_file_decode,
.scan_file = fluidsynth_scan_file,
.suffixes = fluidsynth_suffixes,
};
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