Commit 23314963 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont
Browse files

MIDI message decoder using Fluidsynth software synthetizer

parent 771fe0b8
......@@ -60,6 +60,7 @@ Input/Demuxers:
* Improved ID3v2 tags support
* Improved Ogg/Vorbis tags support
* Raw video support
* Standard MIDI File (types 0 & 1) support
Decoders:
* VP60/VP61/VP6F/VP62 support
......@@ -70,6 +71,7 @@ Decoders:
* DosBox Capture support
* Karl Morton's Video support
* limited atrac3 support
* Fluidsynth MIDI software synthesis (with external sound fonts)
* New codec FOURCCs to support more specific files:
Avid, FCP, Sony, Samsung, ...
......
......@@ -3779,6 +3779,23 @@ if test "${enable_x264}" != "no"; then
fi
fi
dnl
dnl libfluidsynth (MIDI synthetizer) plugin
dnl
AC_ARG_ENABLE(fluidsynth,
[ --enable-fluidsynth MIDI synthesisr with libfluidsynth (default auto)])
AS_IF([test "x${enable_fluidsynth}" != "xno"], [
PKG_CHECK_MODULES(FLUIDSYNTH, fluidsynth, [
VLC_ADD_PLUGINS(fluidsynth)
VLC_ADD_CFLAGS(fluidsynth, [${FLUIDSYNTH_CFLAGS}])
VLC_ADD_LDFLAGS(fluidsynth, [${FLUIDSYNTH_LIBS}])
], [
AS_IF([test "x${enable_fluidsynth}" != "x"], [
AC_MSG_ERROR([${FLUIDSYNTH_PKG_ERRORS}])
])
])
])
dnl
dnl Teletext Modules
dnl vbi decoder plugin (using libzbvi)
......
......@@ -30,3 +30,4 @@ SOURCES_realaudio = realaudio.c
SOURCES_sdl_image = sdl_image.c
SOURCES_zvbi = zvbi.c
SOURCES_cdg = cdg.c
SOURCES_fluidsynth = fluidsynth.c
/*****************************************************************************
* fluidsynth.c: Software MIDI synthetizer using libfluidsynth
*****************************************************************************
* Copyright © 2007 Rémi Denis-Courmont
* $Id$
*
* 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 <vlc/vlc.h>
#include <vlc_aout.h>
#include <vlc_codec.h>
#include <fluidsynth.h>
#define SOUNDFONT_TEXT N_("Sound fonts (required)")
#define SOUNDFONT_LONGTEXT N_( \
"A sound fonts file is required for software synthesis." )
static int Open (vlc_object_t *);
static void Close (vlc_object_t *);
vlc_module_begin();
set_description (_("FluidSynth MIDI synthetizer"));
set_capability ("decoder", 100);
set_category (CAT_INPUT);
set_subcategory (SUBCAT_INPUT_ACODEC);
set_callbacks (Open, Close);
add_file ("soundfont", "", NULL,
SOUNDFONT_TEXT, SOUNDFONT_LONGTEXT, VLC_FALSE);
vlc_module_end();
struct decoder_sys_t
{
fluid_settings_t *settings;
fluid_synth_t *synth;
int soundfont;
audio_date_t end_date;
};
static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block);
static int Open (vlc_object_t *p_this)
{
decoder_t *p_dec = (decoder_t *)p_this;
decoder_sys_t *p_sys;
if (p_dec->fmt_in.i_codec != VLC_FOURCC ('M', 'I', 'D', 'I'))
return VLC_EGENERIC;
char *font_path = var_CreateGetNonEmptyString (p_this, "soundfont");
if (font_path == NULL)
{
msg_Err (p_this, "sound fonts file required for synthesis");
return VLC_EGENERIC;
}
p_dec->fmt_out.i_cat = AUDIO_ES;
p_dec->fmt_out.audio.i_rate = 44100;
p_dec->fmt_out.audio.i_channels = 2;
p_dec->fmt_out.audio.i_original_channels =
p_dec->fmt_out.audio.i_physical_channels =
AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
p_dec->fmt_out.audio.i_bitspersample = 16;
p_dec->pf_decode_audio = DecodeBlock;
p_sys = p_dec->p_sys = malloc (sizeof (*p_sys));
if (p_sys == NULL)
{
free (font_path);
return VLC_ENOMEM;
}
p_sys->settings = new_fluid_settings ();
p_sys->synth = new_fluid_synth (p_sys->settings);
/* FIXME: I bet this is not thread-safe */
p_sys->soundfont = fluid_synth_sfload (p_sys->synth, font_path, 1);
free (font_path);
if (p_sys->soundfont == -1)
{
msg_Err (p_this, "cannot load sound fonts file");
Close (p_this);
return VLC_EGENERIC;
}
aout_DateInit (&p_sys->end_date, p_dec->fmt_out.audio.i_rate);
aout_DateSet (&p_sys->end_date, 0);
return VLC_SUCCESS;
}
static void Close (vlc_object_t *p_this)
{
decoder_sys_t *p_sys = ((decoder_t *)p_this)->p_sys;
if (p_sys->soundfont != -1)
fluid_synth_sfunload (p_sys->synth, p_sys->soundfont, 1);
delete_fluid_synth (p_sys->synth);
delete_fluid_settings (p_sys->settings);
free (p_sys);
}
static aout_buffer_t *DecodeBlock (decoder_t *p_dec, block_t **pp_block)
{
block_t *p_block;
decoder_sys_t *p_sys = p_dec->p_sys;
if (pp_block == NULL)
return NULL;
p_block = *pp_block;
if (p_block == NULL)
return NULL;
if (p_block->i_pts && !aout_DateGet (&p_sys->end_date))
aout_DateSet (&p_sys->end_date, p_block->i_pts);
else
if (p_block->i_pts < aout_DateGet (&p_sys->end_date))
{
msg_Warn (p_dec, "MIDI message in the past?");
block_Release (p_block);
return NULL;
}
if (p_block->i_buffer < 1)
return NULL;
uint8_t channel = p_block->p_buffer[0] & 0xf;
uint8_t p1 = (p_block->i_buffer > 1) ? (p_block->p_buffer[1] & 0x7f) : 0;
uint8_t p2 = (p_block->i_buffer > 2) ? (p_block->p_buffer[2] & 0x7f) : 0;
switch (p_block->p_buffer[0] & 0xf0)
{
case 0x80:
fluid_synth_noteoff (p_sys->synth, channel, p1);
break;
case 0x90:
fluid_synth_noteon (p_sys->synth, channel, p1, p2);
break;
case 0xB0:
fluid_synth_cc (p_sys->synth, channel, p1, p2);
break;
case 0xC0:
fluid_synth_program_change (p_sys->synth, channel, p1);
break;
case 0xE0:
fluid_synth_pitch_bend (p_sys->synth, channel, (p1 << 7) | p2);
break;
}
p_block->p_buffer += p_block->i_buffer;
p_block->i_buffer = 0;
unsigned samples =
(p_block->i_pts - aout_DateGet (&p_sys->end_date)) * 441 / 10000;
if (samples == 0)
return NULL;
aout_buffer_t *p_out = p_dec->pf_aout_buffer_new (p_dec, samples);
if (p_out == NULL)
{
block_Release (p_block);
return NULL;
}
p_out->start_date = aout_DateGet (&p_sys->end_date );
p_out->end_date = aout_DateIncrement (&p_sys->end_date, samples);
fluid_synth_write_s16 (p_sys->synth, samples,
(int16_t *)p_out->p_buffer, 0, 2,
(int16_t *)p_out->p_buffer, 1, 2);
return p_out;
}
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