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>
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_FAILED (-1)
44 # define fluid_synth_sysex(synth, ptr, len, d, e, f, g) (FLUID_FAILED)
45 # define fluid_synth_system_reset(synth) (FLUID_FAILED)
46 # define fluid_synth_channel_pressure(synth, channel, p) (FLUID_FAILED)
49 #define SOUNDFONT_TEXT N_("Sound fonts (required)")
50 #define SOUNDFONT_LONGTEXT N_( \
51 "A sound fonts file is required for software synthesis." )
53 static int Open (vlc_object_t *);
54 static void Close (vlc_object_t *);
57 set_description (N_("FluidSynth MIDI synthesizer"))
58 set_capability ("decoder", 100)
59 set_shortname (N_("FluidSynth"))
60 set_category (CAT_INPUT)
61 set_subcategory (SUBCAT_INPUT_ACODEC)
62 set_callbacks (Open, Close)
63 add_loadfile ("soundfont", "",
64 SOUNDFONT_TEXT, SOUNDFONT_LONGTEXT, false);
70 fluid_settings_t *settings;
78 static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block);
81 static int Open (vlc_object_t *p_this)
83 decoder_t *p_dec = (decoder_t *)p_this;
85 if (p_dec->fmt_in.i_codec != VLC_CODEC_MIDI)
88 decoder_sys_t *p_sys = malloc (sizeof (*p_sys));
89 if (unlikely(p_sys == NULL))
92 p_sys->settings = new_fluid_settings ();
93 p_sys->synth = new_fluid_synth (p_sys->settings);
94 p_sys->soundfont = -1;
96 char *font_path = var_InheritString (p_this, "soundfont");
97 if (font_path != NULL)
99 const char *lpath = ToLocale (font_path);
101 p_sys->soundfont = fluid_synth_sfload (p_sys->synth, font_path, 1);
103 if (p_sys->soundfont == -1)
104 msg_Err (p_this, "cannot load sound fonts file %s", font_path);
108 if (p_sys->soundfont == -1)
110 msg_Err (p_this, "sound font file required for synthesis");
111 dialog_Fatal (p_this, _("MIDI synthesis not set up"),
112 _("A sound font file (.SF2) is required for MIDI synthesis.\n"
113 "Please install a sound font and configure it "
114 "from the VLC preferences "
115 "(Input / Codecs > Audio codecs > FluidSynth).\n"));
116 delete_fluid_synth (p_sys->synth);
117 delete_fluid_settings (p_sys->settings);
122 p_dec->fmt_out.i_cat = AUDIO_ES;
123 p_dec->fmt_out.audio.i_rate = 44100;
124 p_dec->fmt_out.audio.i_channels = 2;
125 p_dec->fmt_out.audio.i_original_channels =
126 p_dec->fmt_out.audio.i_physical_channels =
127 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
130 p_dec->fmt_out.i_codec = VLC_CODEC_FL32;
131 p_dec->fmt_out.audio.i_bitspersample = 32;
132 p_sys->fixed = false;
136 p_dec->fmt_out.i_codec = VLC_CODEC_S16N;
137 p_dec->fmt_out.audio.i_bitspersample = 16;
140 date_Init (&p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1);
141 date_Set (&p_sys->end_date, 0);
143 p_dec->p_sys = p_sys;
144 p_dec->pf_decode_audio = DecodeBlock;
149 static void Close (vlc_object_t *p_this)
151 decoder_sys_t *p_sys = ((decoder_t *)p_this)->p_sys;
153 fluid_synth_sfunload (p_sys->synth, p_sys->soundfont, 1);
154 delete_fluid_synth (p_sys->synth);
155 delete_fluid_settings (p_sys->settings);
160 static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block)
163 decoder_sys_t *p_sys = p_dec->p_sys;
164 aout_buffer_t *p_out = NULL;
166 if (pp_block == NULL)
173 if (p_block->i_pts > VLC_TS_INVALID && !date_Get (&p_sys->end_date))
174 date_Set (&p_sys->end_date, p_block->i_pts);
176 if (p_block->i_pts < date_Get (&p_sys->end_date))
178 msg_Warn (p_dec, "MIDI message in the past?");
182 if (p_block->i_buffer < 1)
185 uint8_t event = p_block->p_buffer[0];
186 uint8_t channel = p_block->p_buffer[0] & 0xf;
193 if (p_block->p_buffer[p_block->i_buffer - 1] != 0xF7)
196 msg_Warn (p_dec, "fragmented SysEx not implemented");
199 fluid_synth_sysex (p_sys->synth, (char *)p_block->p_buffer + 1,
200 p_block->i_buffer - 2, NULL, NULL, NULL, 0);
203 fluid_synth_system_reset (p_sys->synth);
207 uint8_t p1 = (p_block->i_buffer > 1) ? (p_block->p_buffer[1] & 0x7f) : 0;
208 uint8_t p2 = (p_block->i_buffer > 2) ? (p_block->p_buffer[2] & 0x7f) : 0;
210 switch (event & 0xF0)
213 fluid_synth_noteoff (p_sys->synth, channel, p1);
216 fluid_synth_noteon (p_sys->synth, channel, p1, p2);
218 /*case 0xA0: note aftertouch not implemented */
220 fluid_synth_cc (p_sys->synth, channel, p1, p2);
223 fluid_synth_program_change (p_sys->synth, channel, p1);
226 fluid_synth_channel_pressure (p_sys->synth, channel, p1);
229 fluid_synth_pitch_bend (p_sys->synth, channel, (p2 << 7) | p1);
234 (p_block->i_pts - date_Get (&p_sys->end_date)) * 441 / 10000;
238 p_out = decoder_NewAudioBuffer (p_dec, samples);
242 p_out->i_pts = date_Get (&p_sys->end_date );
243 p_out->i_length = date_Increment (&p_sys->end_date, samples)
246 fluid_synth_write_float (p_sys->synth, samples,
247 p_out->p_buffer, 0, 2,
248 p_out->p_buffer, 1, 2);
250 fluid_synth_write_s16 (p_sys->synth, samples,
251 (int16_t *)p_out->p_buffer, 0, 2,
252 (int16_t *)p_out->p_buffer, 1, 2);
254 block_Release (p_block);