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Import libfluidsynth into the Ardour codebase

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Robin Gareus 2016-08-23 18:50:54 +02:00
parent ac8617017a
commit ac05f05023
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115
libs/fluidsynth/src/fluid_rvoice_event.h Normal file
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/* FluidSynth - A Software Synthesizer
*
* Copyright (C) 2003 Peter Hanappe and others.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License
* as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*/
#ifndef _FLUID_RVOICE_EVENT_H
#define _FLUID_RVOICE_EVENT_H
#include "fluidsynth_priv.h"
#include "fluid_rvoice_mixer.h"
#include "fluid_ringbuffer.h"
#define EVENT_REAL_PARAMS (5)
typedef struct _fluid_rvoice_event_t fluid_rvoice_event_t;
typedef struct _fluid_rvoice_eventhandler_t fluid_rvoice_eventhandler_t;
struct _fluid_rvoice_event_t {
void* method;
void* object;
void* ptr;
int intparam;
fluid_real_t realparams[EVENT_REAL_PARAMS];
};
void fluid_rvoice_event_dispatch(fluid_rvoice_event_t* event);
/**
* Bridge between the renderer thread and the midi state thread.
* If is_threadsafe is true, that means fluid_rvoice_eventhandler_fetch_all
* can be called in parallell with fluid_rvoice_eventhandler_push/flush
*/
struct _fluid_rvoice_eventhandler_t {
int is_threadsafe; /* False for optimal performance, true for atomic operations */
fluid_ringbuffer_t* queue; /**< List of fluid_rvoice_event_t */
int queue_stored; /**< Extras pushed but not flushed */
fluid_ringbuffer_t* finished_voices; /**< return queue from handler, list of fluid_rvoice_t* */
fluid_rvoice_mixer_t* mixer;
};
fluid_rvoice_eventhandler_t* new_fluid_rvoice_eventhandler(
int is_threadsafe, int queuesize, int finished_voices_size, int bufs,
int fx_bufs, fluid_real_t sample_rate);
void delete_fluid_rvoice_eventhandler(fluid_rvoice_eventhandler_t*);
int fluid_rvoice_eventhandler_dispatch_all(fluid_rvoice_eventhandler_t*);
int fluid_rvoice_eventhandler_dispatch_count(fluid_rvoice_eventhandler_t*);
static FLUID_INLINE void
fluid_rvoice_eventhandler_flush(fluid_rvoice_eventhandler_t* handler)
{
if (handler->queue_stored > 0) {
fluid_ringbuffer_next_inptr(handler->queue, handler->queue_stored);
handler->queue_stored = 0;
}
}
/**
* @return next finished voice, or NULL if nothing in queue
*/
static FLUID_INLINE fluid_rvoice_t*
fluid_rvoice_eventhandler_get_finished_voice(fluid_rvoice_eventhandler_t* handler)
{
void* result = fluid_ringbuffer_get_outptr(handler->finished_voices);
if (result == NULL) return NULL;
result = * (fluid_rvoice_t**) result;
fluid_ringbuffer_next_outptr(handler->finished_voices);
return result;
}
int fluid_rvoice_eventhandler_push(fluid_rvoice_eventhandler_t* handler,
void* method, void* object, int intparam,
fluid_real_t realparam);
int fluid_rvoice_eventhandler_push_ptr(fluid_rvoice_eventhandler_t* handler,
void* method, void* object, void* ptr);
int fluid_rvoice_eventhandler_push5(fluid_rvoice_eventhandler_t* handler,
void* method, void* object, int intparam,
fluid_real_t r1, fluid_real_t r2,
fluid_real_t r3, fluid_real_t r4, fluid_real_t r5);
static FLUID_INLINE void
fluid_rvoice_eventhandler_add_rvoice(fluid_rvoice_eventhandler_t* handler,
fluid_rvoice_t* rvoice)
{
if (handler->is_threadsafe)
fluid_rvoice_eventhandler_push_ptr(handler, fluid_rvoice_mixer_add_voice,
handler->mixer, rvoice);
else
fluid_rvoice_mixer_add_voice(handler->mixer, rvoice);
}
#endif