1 /*****************************************************************************
2 * fluidsynth.c: Software MIDI synthesizer using libfluidsynth
3 *****************************************************************************
4 * Copyright © 2007 Rémi Denis-Courmont
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
20 *****************************************************************************/
26 #include <vlc_common.h>
27 #include <vlc_plugin.h>
29 #include <vlc_codec.h>
30 #include <vlc_dialog.h>
31 #include <vlc_charset.h>
40 /* On Win32, we link statically */
42 # define FLUIDSYNTH_NOT_A_DLL
45 #include <fluidsynth.h>
47 #define SOUNDFONT_TEXT N_("Sound fonts")
48 #define SOUNDFONT_LONGTEXT N_( \
49 "A sound fonts file is required for software synthesis." )
51 static int Open (vlc_object_t *);
52 static void Close (vlc_object_t *);
55 set_description (N_("FluidSynth MIDI synthesizer"))
56 set_capability ("decoder", 100)
57 set_shortname (N_("FluidSynth"))
58 set_category (CAT_INPUT)
59 set_subcategory (SUBCAT_INPUT_ACODEC)
60 set_callbacks (Open, Close)
61 add_loadfile ("soundfont", "",
62 SOUNDFONT_TEXT, SOUNDFONT_LONGTEXT, false);
68 fluid_settings_t *settings;
75 static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block);
78 static int Open (vlc_object_t *p_this)
80 decoder_t *p_dec = (decoder_t *)p_this;
82 if (p_dec->fmt_in.i_codec != VLC_CODEC_MIDI)
85 decoder_sys_t *p_sys = malloc (sizeof (*p_sys));
86 if (unlikely(p_sys == NULL))
89 p_sys->settings = new_fluid_settings ();
90 p_sys->synth = new_fluid_synth (p_sys->settings);
91 p_sys->soundfont = -1;
93 char *font_path = var_InheritString (p_this, "soundfont");
94 if (font_path != NULL)
96 const char *lpath = ToLocale (font_path);
98 msg_Dbg (p_this, "loading sound fonts file %s", font_path);
99 p_sys->soundfont = fluid_synth_sfload (p_sys->synth, font_path, 1);
101 if (p_sys->soundfont == -1)
102 msg_Err (p_this, "cannot load sound fonts file %s", font_path);
105 #ifdef _POSIX_VERSION
110 glob ("/usr/share/sounds/sf2/*.sf2", GLOB_NOESCAPE, NULL, &gl);
111 for (size_t i = 0; i < gl.gl_pathc; i++)
113 const char *path = gl.gl_pathv[i];
115 msg_Dbg (p_this, "loading sound fonts file %s", path);
116 p_sys->soundfont = fluid_synth_sfload (p_sys->synth, path, 1);
117 if (p_sys->soundfont != -1)
118 break; /* it worked! */
119 msg_Err (p_this, "cannot load sound fonts file %s", path);
125 if (p_sys->soundfont == -1)
127 msg_Err (p_this, "sound font file required for synthesis");
128 dialog_Fatal (p_this, _("MIDI synthesis not set up"),
129 _("A sound font file (.SF2) is required for MIDI synthesis.\n"
130 "Please install a sound font and configure it "
131 "from the VLC preferences "
132 "(Input / Codecs > Audio codecs > FluidSynth).\n"));
133 delete_fluid_synth (p_sys->synth);
134 delete_fluid_settings (p_sys->settings);
139 p_dec->fmt_out.i_cat = AUDIO_ES;
140 p_dec->fmt_out.audio.i_rate = 44100;
141 p_dec->fmt_out.audio.i_channels = 2;
142 p_dec->fmt_out.audio.i_original_channels =
143 p_dec->fmt_out.audio.i_physical_channels =
144 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
145 p_dec->fmt_out.i_codec = VLC_CODEC_FL32;
146 p_dec->fmt_out.audio.i_bitspersample = 32;
147 date_Init (&p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1);
148 date_Set (&p_sys->end_date, 0);
150 p_dec->p_sys = p_sys;
151 p_dec->pf_decode_audio = DecodeBlock;
156 static void Close (vlc_object_t *p_this)
158 decoder_sys_t *p_sys = ((decoder_t *)p_this)->p_sys;
160 fluid_synth_sfunload (p_sys->synth, p_sys->soundfont, 1);
161 delete_fluid_synth (p_sys->synth);
162 delete_fluid_settings (p_sys->settings);
167 static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block)
170 decoder_sys_t *p_sys = p_dec->p_sys;
171 aout_buffer_t *p_out = NULL;
173 if (pp_block == NULL)
180 if (p_block->i_pts > VLC_TS_INVALID && !date_Get (&p_sys->end_date))
181 date_Set (&p_sys->end_date, p_block->i_pts);
183 if (p_block->i_pts < date_Get (&p_sys->end_date))
185 msg_Warn (p_dec, "MIDI message in the past?");
189 if (p_block->i_buffer < 1)
192 uint8_t event = p_block->p_buffer[0];
193 uint8_t channel = p_block->p_buffer[0] & 0xf;
200 if (p_block->p_buffer[p_block->i_buffer - 1] != 0xF7)
203 msg_Warn (p_dec, "fragmented SysEx not implemented");
206 fluid_synth_sysex (p_sys->synth, (char *)p_block->p_buffer + 1,
207 p_block->i_buffer - 2, NULL, NULL, NULL, 0);
210 fluid_synth_system_reset (p_sys->synth);
214 uint8_t p1 = (p_block->i_buffer > 1) ? (p_block->p_buffer[1] & 0x7f) : 0;
215 uint8_t p2 = (p_block->i_buffer > 2) ? (p_block->p_buffer[2] & 0x7f) : 0;
217 switch (event & 0xF0)
220 fluid_synth_noteoff (p_sys->synth, channel, p1);
223 fluid_synth_noteon (p_sys->synth, channel, p1, p2);
225 /*case 0xA0: note aftertouch not implemented */
227 fluid_synth_cc (p_sys->synth, channel, p1, p2);
230 fluid_synth_program_change (p_sys->synth, channel, p1);
233 fluid_synth_channel_pressure (p_sys->synth, channel, p1);
236 fluid_synth_pitch_bend (p_sys->synth, channel, (p2 << 7) | p1);
241 (p_block->i_pts - date_Get (&p_sys->end_date)) * 441 / 10000;
245 p_out = decoder_NewAudioBuffer (p_dec, samples);
249 p_out->i_pts = date_Get (&p_sys->end_date );
250 p_out->i_length = date_Increment (&p_sys->end_date, samples)
252 fluid_synth_write_float (p_sys->synth, samples, p_out->p_buffer, 0, 2,
253 p_out->p_buffer, 1, 2);
255 block_Release (p_block);