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/*
* Copyright (C) 2003-2013 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.
*/
#include "config.h"
#include "FluidsynthDecoderPlugin.hxx"
#include "DecoderAPI.hxx"
#include "audio_check.h"
#include "conf.h"
#include <glib.h>
#include <fluidsynth.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "fluidsynth"
static unsigned sample_rate;
static const char *soundfont_path;
/**
* 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(fluid_log_level(level)),
"%s", message);
}
static bool
fluidsynth_init(const struct config_param *param)
{
GError *error = nullptr;
sample_rate = config_get_block_unsigned(param, "sample_rate", 48000);
if (!audio_check_sample_rate(sample_rate, &error)) {
g_warning("%s\n", error->message);
g_error_free(error);
return false;
}
soundfont_path =
config_get_block_string(param, "soundfont",
"/usr/share/sounds/sf2/FluidR3_GM.sf2");
fluid_set_log_function(LAST_LOG_LEVEL,
fluidsynth_mpd_log_function, nullptr);
return true;
}
static void
fluidsynth_file_decode(struct decoder *decoder, const char *path_fs)
{
char setting_sample_rate[] = "synth.sample-rate";
/*
char setting_verbose[] = "synth.verbose";
char setting_yes[] = "yes";
*/
fluid_settings_t *settings;
fluid_synth_t *synth;
fluid_player_t *player;
int ret;
enum decoder_command cmd;
/* set up fluid settings */
settings = new_fluid_settings();
if (settings == nullptr)
return;
fluid_settings_setnum(settings, setting_sample_rate, sample_rate);
/*
fluid_settings_setstr(settings, setting_verbose, setting_yes);
*/
/* create the fluid synth */
synth = new_fluid_synth(settings);
if (synth == nullptr) {
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 == nullptr) {
delete_fluid_synth(synth);
delete_fluid_settings(settings);
return;
}
ret = fluid_player_add(player, path_fs);
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 */
struct audio_format audio_format;
audio_format_init(&audio_format, sample_rate, SAMPLE_FORMAT_S16, 2);
decoder_initialized(decoder, &audio_format, false, -1);
while (fluid_player_get_status(player) == FLUID_PLAYER_PLAYING) {
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);
if (ret != 0)
break;
cmd = decoder_data(decoder, nullptr, buffer, sizeof(buffer),
0);
if (cmd != DECODE_COMMAND_NONE)
break;
}
/* 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)
{
return fluid_is_midifile(file);
}
static const char *const fluidsynth_suffixes[] = {
"mid",
nullptr
};
const struct decoder_plugin fluidsynth_decoder_plugin = {
"fluidsynth",
fluidsynth_init,
nullptr,
nullptr,
fluidsynth_file_decode,
fluidsynth_scan_file,
nullptr,
nullptr,
fluidsynth_suffixes,
nullptr,
};
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