1 /* FluidSynth - A Software Synthesizer
2 *
3 * Copyright (C) 2003 Peter Hanappe and others.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public License
7 * as published by the Free Software Foundation; either version 2 of
8 * the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the Free
17 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 * 02110-1301, USA
19 */
20
21
22 #ifndef _FLUID_RVOICE_EVENT_H
23 #define _FLUID_RVOICE_EVENT_H
24
25 #include "fluidsynth_priv.h"
26 #include "fluid_rvoice_mixer.h"
27 #include "fluid_ringbuffer.h"
28
29 #define EVENT_REAL_PARAMS (5)
30
31 typedef struct _fluid_rvoice_event_t fluid_rvoice_event_t;
32 typedef struct _fluid_rvoice_eventhandler_t fluid_rvoice_eventhandler_t;
33
34 struct _fluid_rvoice_event_t {
35 void* method;
36 void* object;
37 void* ptr;
38 int intparam;
39 fluid_real_t realparams[EVENT_REAL_PARAMS];
40 };
41
42 void fluid_rvoice_event_dispatch(fluid_rvoice_event_t* event);
43
44
45 /**
46 * Bridge between the renderer thread and the midi state thread.
47 * If is_threadsafe is true, that means fluid_rvoice_eventhandler_fetch_all
48 * can be called in parallell with fluid_rvoice_eventhandler_push/flush
49 */
50 struct _fluid_rvoice_eventhandler_t {
51 int is_threadsafe; /* False for optimal performance, true for atomic operations */
52 fluid_ringbuffer_t* queue; /**< List of fluid_rvoice_event_t */
53 int queue_stored; /**< Extras pushed but not flushed */
54 fluid_ringbuffer_t* finished_voices; /**< return queue from handler, list of fluid_rvoice_t* */
55 fluid_rvoice_mixer_t* mixer;
56 };
57
58 fluid_rvoice_eventhandler_t* new_fluid_rvoice_eventhandler(
59 int is_threadsafe, int queuesize, int finished_voices_size, int bufs,
60 int fx_bufs, fluid_real_t sample_rate);
61
62 void delete_fluid_rvoice_eventhandler(fluid_rvoice_eventhandler_t*);
63
64 int fluid_rvoice_eventhandler_dispatch_all(fluid_rvoice_eventhandler_t*);
65 int fluid_rvoice_eventhandler_dispatch_count(fluid_rvoice_eventhandler_t*);
66
67 static FLUID_INLINE void
fluid_rvoice_eventhandler_flush(fluid_rvoice_eventhandler_t * handler)68 fluid_rvoice_eventhandler_flush(fluid_rvoice_eventhandler_t* handler)
69 {
70 if (handler->queue_stored > 0) {
71 fluid_ringbuffer_next_inptr(handler->queue, handler->queue_stored);
72 handler->queue_stored = 0;
73 }
74 }
75
76 /**
77 * @return next finished voice, or NULL if nothing in queue
78 */
79 static FLUID_INLINE fluid_rvoice_t*
fluid_rvoice_eventhandler_get_finished_voice(fluid_rvoice_eventhandler_t * handler)80 fluid_rvoice_eventhandler_get_finished_voice(fluid_rvoice_eventhandler_t* handler)
81 {
82 void* result = fluid_ringbuffer_get_outptr(handler->finished_voices);
83 if (result == NULL) return NULL;
84 result = * (fluid_rvoice_t**) result;
85 fluid_ringbuffer_next_outptr(handler->finished_voices);
86 return result;
87 }
88
89
90 int fluid_rvoice_eventhandler_push(fluid_rvoice_eventhandler_t* handler,
91 void* method, void* object, int intparam,
92 fluid_real_t realparam);
93
94 int fluid_rvoice_eventhandler_push_ptr(fluid_rvoice_eventhandler_t* handler,
95 void* method, void* object, void* ptr);
96
97 int fluid_rvoice_eventhandler_push5(fluid_rvoice_eventhandler_t* handler,
98 void* method, void* object, int intparam,
99 fluid_real_t r1, fluid_real_t r2,
100 fluid_real_t r3, fluid_real_t r4, fluid_real_t r5);
101
102 static FLUID_INLINE void
fluid_rvoice_eventhandler_add_rvoice(fluid_rvoice_eventhandler_t * handler,fluid_rvoice_t * rvoice)103 fluid_rvoice_eventhandler_add_rvoice(fluid_rvoice_eventhandler_t* handler,
104 fluid_rvoice_t* rvoice)
105 {
106 if (handler->is_threadsafe)
107 fluid_rvoice_eventhandler_push_ptr(handler, fluid_rvoice_mixer_add_voice,
108 handler->mixer, rvoice);
109 else
110 fluid_rvoice_mixer_add_voice(handler->mixer, rvoice);
111 }
112
113
114
115 #endif
116