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 #if (FLUIDSYNTH_VERSION_MAJOR < 1) \
42 || (FLUIDSYNTH_VERSION_MAJOR == 1 && FLUIDSYNTH_VERSION_MINOR < 1)
43 # define fluid_synth_sysex(synth, ptr, len, d, e, f, g) (FLUID_FAILED)
44 # define fluid_synth_system_reset(synth) (FLUID_FAILED)
45 # define fluid_synth_channel_pressure(synth, channel, p) (FLUID_FAILED)
48 #define SOUNDFONT_TEXT N_("Sound fonts (required)")
49 #define SOUNDFONT_LONGTEXT N_( \
50 "A sound fonts file is required for software synthesis." )
52 static int Open (vlc_object_t *);
53 static void Close (vlc_object_t *);
56 set_description (N_("FluidSynth MIDI synthetizer"))
57 set_capability ("decoder", 100)
58 set_shortname (N_("FluidSynth"))
59 set_category (CAT_INPUT)
60 set_subcategory (SUBCAT_INPUT_ACODEC)
61 set_callbacks (Open, Close)
62 add_file ("soundfont", "", NULL,
63 SOUNDFONT_TEXT, SOUNDFONT_LONGTEXT, false);
69 fluid_settings_t *settings;
77 static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block);
80 static int Open (vlc_object_t *p_this)
82 decoder_t *p_dec = (decoder_t *)p_this;
85 if (p_dec->fmt_in.i_codec != VLC_CODEC_MIDI)
88 char *font_path = var_InheritString (p_this, "soundfont");
89 if (font_path == NULL)
91 msg_Err (p_this, "sound font file required for synthesis");
92 dialog_Fatal (p_this, _("MIDI synthesis not set up"),
93 _("A sound font file (.SF2) is required for MIDI synthesis.\n"
94 "Please install a sound font and configure it "
95 "from the VLC preferences (Codecs / Audio / FluidSynth).\n"));
99 p_dec->pf_decode_audio = DecodeBlock;
100 p_sys = p_dec->p_sys = malloc (sizeof (*p_sys));
107 p_sys->settings = new_fluid_settings ();
108 p_sys->synth = new_fluid_synth (p_sys->settings);
109 /* FIXME: I bet this is not thread-safe */
110 const char *lpath = ToLocale (font_path);
111 p_sys->soundfont = fluid_synth_sfload (p_sys->synth, font_path, 1);
113 if (p_sys->soundfont == -1)
115 msg_Err (p_this, "cannot load sound fonts file %s", font_path);
117 dialog_Fatal (p_this, _("MIDI synthesis not set up"),
118 _("The specified sound font file (%s) is incorrect.\n"
119 "Please install a valid sound font and reconfigure it "
120 "from the VLC preferences (Codecs / Audio / FluidSynth).\n"),
127 p_dec->fmt_out.i_cat = AUDIO_ES;
128 p_dec->fmt_out.audio.i_rate = 44100;
129 p_dec->fmt_out.audio.i_channels = 2;
130 p_dec->fmt_out.audio.i_original_channels =
131 p_dec->fmt_out.audio.i_physical_channels =
132 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
135 p_dec->fmt_out.i_codec = VLC_CODEC_FL32;
136 p_dec->fmt_out.audio.i_bitspersample = 32;
137 p_sys->fixed = false;
141 p_dec->fmt_out.i_codec = VLC_CODEC_S16N;
142 p_dec->fmt_out.audio.i_bitspersample = 16;
145 date_Init (&p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1);
146 date_Set (&p_sys->end_date, 0);
152 static void Close (vlc_object_t *p_this)
154 decoder_sys_t *p_sys = ((decoder_t *)p_this)->p_sys;
156 if (p_sys->soundfont != -1)
157 fluid_synth_sfunload (p_sys->synth, p_sys->soundfont, 1);
158 delete_fluid_synth (p_sys->synth);
159 delete_fluid_settings (p_sys->settings);
164 static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block)
167 decoder_sys_t *p_sys = p_dec->p_sys;
168 aout_buffer_t *p_out = NULL;
170 if (pp_block == NULL)
177 if (p_block->i_pts > VLC_TS_INVALID && !date_Get (&p_sys->end_date))
178 date_Set (&p_sys->end_date, p_block->i_pts);
180 if (p_block->i_pts < date_Get (&p_sys->end_date))
182 msg_Warn (p_dec, "MIDI message in the past?");
186 if (p_block->i_buffer < 1)
189 uint8_t event = p_block->p_buffer[0];
190 uint8_t channel = p_block->p_buffer[0] & 0xf;
197 if (p_block->p_buffer[p_block->i_buffer - 1] != 0xF7)
200 msg_Warn (p_dec, "fragmented SysEx not implemented");
203 fluid_synth_sysex (p_sys->synth, (char *)p_block->p_buffer + 1,
204 p_block->i_buffer - 2, NULL, NULL, NULL, 0);
207 fluid_synth_system_reset (p_sys->synth);
211 uint8_t p1 = (p_block->i_buffer > 1) ? (p_block->p_buffer[1] & 0x7f) : 0;
212 uint8_t p2 = (p_block->i_buffer > 2) ? (p_block->p_buffer[2] & 0x7f) : 0;
214 switch (event & 0xF0)
217 fluid_synth_noteoff (p_sys->synth, channel, p1);
220 fluid_synth_noteon (p_sys->synth, channel, p1, p2);
222 /*case 0xA0: note aftertouch not implemented */
224 fluid_synth_cc (p_sys->synth, channel, p1, p2);
227 fluid_synth_program_change (p_sys->synth, channel, p1);
230 fluid_synth_channel_pressure (p_sys->synth, channel, p1);
233 fluid_synth_pitch_bend (p_sys->synth, channel, (p2 << 7) | p1);
238 (p_block->i_pts - date_Get (&p_sys->end_date)) * 441 / 10000;
242 p_out = decoder_NewAudioBuffer (p_dec, samples);
246 p_out->i_pts = date_Get (&p_sys->end_date );
247 p_out->i_length = date_Increment (&p_sys->end_date, samples)
250 fluid_synth_write_float (p_sys->synth, samples,
251 p_out->p_buffer, 0, 2,
252 p_out->p_buffer, 1, 2);
254 fluid_synth_write_s16 (p_sys->synth, samples,
255 (int16_t *)p_out->p_buffer, 0, 2,
256 (int16_t *)p_out->p_buffer, 1, 2);
258 block_Release (p_block);