1 /*****************************************************************************
2 * fluidsynth.c: Software MIDI synthetizer 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>
31 #include <vlc_dialog.h>
32 #include <vlc_charset.h>
34 /* On Win32, we link statically */
36 # define FLUIDSYNTH_NOT_A_DLL
39 #include <fluidsynth.h>
41 #define SOUNDFONT_TEXT N_("Sound fonts (required)")
42 #define SOUNDFONT_LONGTEXT N_( \
43 "A sound fonts file is required for software synthesis." )
45 static int Open (vlc_object_t *);
46 static void Close (vlc_object_t *);
49 set_description (N_("FluidSynth MIDI synthetizer"))
50 set_capability ("decoder", 100)
51 set_shortname (N_("FluidSynth"))
52 set_category (CAT_INPUT)
53 set_subcategory (SUBCAT_INPUT_ACODEC)
54 set_callbacks (Open, Close)
55 add_file ("soundfont", "", NULL,
56 SOUNDFONT_TEXT, SOUNDFONT_LONGTEXT, false);
62 fluid_settings_t *settings;
70 static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block);
73 static int Open (vlc_object_t *p_this)
75 decoder_t *p_dec = (decoder_t *)p_this;
78 if (p_dec->fmt_in.i_codec != VLC_CODEC_MIDI)
81 char *font_path = var_InheritString (p_this, "soundfont");
82 if (font_path == NULL)
84 msg_Err (p_this, "sound font file required for synthesis");
85 dialog_Fatal (p_this, _("MIDI synthesis not set up"),
86 _("A sound font file (.SF2) is required for MIDI synthesis.\n"
87 "Please install a sound font and configure it "
88 "from the VLC preferences (Codecs / Audio / FluidSynth).\n"));
92 p_dec->pf_decode_audio = DecodeBlock;
93 p_sys = p_dec->p_sys = malloc (sizeof (*p_sys));
100 p_sys->settings = new_fluid_settings ();
101 p_sys->synth = new_fluid_synth (p_sys->settings);
102 /* FIXME: I bet this is not thread-safe */
103 const char *lpath = ToLocale (font_path);
104 p_sys->soundfont = fluid_synth_sfload (p_sys->synth, font_path, 1);
106 if (p_sys->soundfont == -1)
108 msg_Err (p_this, "cannot load sound fonts file %s", font_path);
110 dialog_Fatal (p_this, _("MIDI synthesis not set up"),
111 _("The specified sound font file (%s) is incorrect.\n"
112 "Please install a valid sound font and reconfigure it "
113 "from the VLC preferences (Codecs / Audio / FluidSynth).\n"),
120 p_dec->fmt_out.i_cat = AUDIO_ES;
121 p_dec->fmt_out.audio.i_rate = 44100;
122 p_dec->fmt_out.audio.i_channels = 2;
123 p_dec->fmt_out.audio.i_original_channels =
124 p_dec->fmt_out.audio.i_physical_channels =
125 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
128 p_dec->fmt_out.i_codec = VLC_CODEC_FL32;
129 p_dec->fmt_out.audio.i_bitspersample = 32;
130 p_sys->fixed = false;
134 p_dec->fmt_out.i_codec = VLC_CODEC_S16N;
135 p_dec->fmt_out.audio.i_bitspersample = 16;
138 date_Init (&p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1);
139 date_Set (&p_sys->end_date, 0);
145 static void Close (vlc_object_t *p_this)
147 decoder_sys_t *p_sys = ((decoder_t *)p_this)->p_sys;
149 if (p_sys->soundfont != -1)
150 fluid_synth_sfunload (p_sys->synth, p_sys->soundfont, 1);
151 delete_fluid_synth (p_sys->synth);
152 delete_fluid_settings (p_sys->settings);
157 static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block)
160 decoder_sys_t *p_sys = p_dec->p_sys;
161 aout_buffer_t *p_out = NULL;
163 if (pp_block == NULL)
170 if (p_block->i_pts > VLC_TS_INVALID && !date_Get (&p_sys->end_date))
171 date_Set (&p_sys->end_date, p_block->i_pts);
173 if (p_block->i_pts < date_Get (&p_sys->end_date))
175 msg_Warn (p_dec, "MIDI message in the past?");
179 if (p_block->i_buffer < 1)
182 uint8_t channel = p_block->p_buffer[0] & 0xf;
183 uint8_t p1 = (p_block->i_buffer > 1) ? (p_block->p_buffer[1] & 0x7f) : 0;
184 uint8_t p2 = (p_block->i_buffer > 2) ? (p_block->p_buffer[2] & 0x7f) : 0;
186 switch (p_block->p_buffer[0] & 0xf0)
189 fluid_synth_noteoff (p_sys->synth, channel, p1);
192 fluid_synth_noteon (p_sys->synth, channel, p1, p2);
195 fluid_synth_cc (p_sys->synth, channel, p1, p2);
198 fluid_synth_program_change (p_sys->synth, channel, p1);
201 fluid_synth_pitch_bend (p_sys->synth, channel, (p1 << 7) | p2);
206 (p_block->i_pts - date_Get (&p_sys->end_date)) * 441 / 10000;
210 p_out = decoder_NewAudioBuffer (p_dec, samples);
214 p_out->i_pts = date_Get (&p_sys->end_date );
215 p_out->i_length = date_Increment (&p_sys->end_date, samples)
218 fluid_synth_write_float (p_sys->synth, samples,
219 p_out->p_buffer, 0, 2,
220 p_out->p_buffer, 1, 2);
222 fluid_synth_write_s16 (p_sys->synth, samples,
223 (int16_t *)p_out->p_buffer, 0, 2,
224 (int16_t *)p_out->p_buffer, 1, 2);
226 block_Release (p_block);