2 * QEMU Proxy for OPL2/3 emulation by MAME team
4 * Copyright (c) 2004-2005 Vassili Karpov (malc)
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include "hw/audio/audio.h"
27 #include "audio/audio.h"
28 #include "hw/isa/isa.h"
32 #define ADLIB_KILL_TIMERS 1
35 #define ADLIB_DESC "Yamaha YMF262 (OPL3)"
37 #define ADLIB_DESC "Yamaha YM3812 (OPL2)"
41 #include "qemu/timer.h"
44 #define dolog(...) AUD_log ("adlib", __VA_ARGS__)
46 #define ldebug(...) dolog (__VA_ARGS__)
53 void YMF262UpdateOneQEMU (int which, INT16 *dst, int length);
60 #define IO_READ_PROTO(name) \
61 uint32_t name (void *opaque, uint32_t nport)
62 #define IO_WRITE_PROTO(name) \
63 void name (void *opaque, uint32_t nport, uint32_t val)
65 #define TYPE_ADLIB "adlib"
66 #define ADLIB(obj) OBJECT_CHECK(AdlibState, (obj), TYPE_ADLIB)
84 int left, pos, samples;
85 QEMUAudioTimeStamp ats;
92 static AdlibState *glob_adlib;
94 static void adlib_stop_opl_timer (AdlibState *s, size_t n)
97 YMF262TimerOver (0, n);
99 OPLTimerOver (s->opl, n);
104 static void adlib_kill_timers (AdlibState *s)
108 for (i = 0; i < 2; ++i) {
112 delta = AUD_get_elapsed_usec_out (s->voice, &s->ats);
114 "delta = %f dexp = %f expired => %d\n",
116 s->dexp[i] / 1000000.0,
119 if (ADLIB_KILL_TIMERS || delta >= s->dexp[i]) {
120 adlib_stop_opl_timer (s, i);
121 AUD_init_time_stamp_out (s->voice, &s->ats);
127 static IO_WRITE_PROTO (adlib_write)
129 AdlibState *s = opaque;
133 AUD_set_active_out (s->voice, 1);
135 adlib_kill_timers (s);
138 YMF262Write (0, a, val);
140 OPLWrite (s->opl, a, val);
144 static IO_READ_PROTO (adlib_read)
146 AdlibState *s = opaque;
150 adlib_kill_timers (s);
153 data = YMF262Read (0, a);
155 data = OPLRead (s->opl, a);
160 static void timer_handler (int c, double interval_Sec)
162 AdlibState *s = glob_adlib;
169 if (interval_Sec == 0.0) {
176 interval = get_ticks_per_sec () * interval_Sec;
177 exp = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + interval;
181 s->dexp[n] = interval_Sec * 1000000.0;
182 AUD_init_time_stamp_out (s->voice, &s->ats);
185 static int write_audio (AdlibState *s, int samples)
191 int nbytes, wbytes, wsampl;
193 nbytes = samples << SHIFT;
196 s->mixbuf + (pos << (SHIFT - 1)),
201 wsampl = wbytes >> SHIFT;
204 pos = (pos + wsampl) % s->samples;
216 static void adlib_callback (void *opaque, int free)
218 AdlibState *s = opaque;
219 int samples, net = 0, to_play, written;
221 samples = free >> SHIFT;
222 if (!(s->active && s->enabled) || !samples) {
226 to_play = audio_MIN (s->left, samples);
228 written = write_audio (s, to_play);
234 s->pos = (s->pos + written) % s->samples;
241 samples = audio_MIN (samples, s->samples - s->pos);
247 YMF262UpdateOneQEMU (0, s->mixbuf + s->pos * 2, samples);
249 YM3812UpdateOne (s->opl, s->mixbuf + s->pos, samples);
253 written = write_audio (s, samples);
258 s->pos = (s->pos + written) % s->samples;
267 static void Adlib_fini (AdlibState *s)
282 AUD_remove_card (&s->card);
285 static MemoryRegionPortio adlib_portio_list[] = {
286 { 0, 4, 1, .read = adlib_read, .write = adlib_write, },
287 { 0, 2, 1, .read = adlib_read, .write = adlib_write, },
288 { 0x388, 4, 1, .read = adlib_read, .write = adlib_write, },
289 PORTIO_END_OF_LIST(),
292 static void adlib_realizefn (DeviceState *dev, Error **errp)
294 AdlibState *s = ADLIB(dev);
295 struct audsettings as;
298 error_setg (errp, "Cannot create more than 1 adlib device");
304 if (YMF262Init (1, 14318180, s->freq)) {
305 error_setg (errp, "YMF262Init %d failed", s->freq);
309 YMF262SetTimerHandler (0, timer_handler, 0);
313 s->opl = OPLCreate (OPL_TYPE_YM3812, 3579545, s->freq);
315 error_setg (errp, "OPLCreate %d failed", s->freq);
319 OPLSetTimerHandler (s->opl, timer_handler, 0);
325 as.nchannels = SHIFT;
326 as.fmt = AUD_FMT_S16;
327 as.endianness = AUDIO_HOST_ENDIANNESS;
329 AUD_register_card ("adlib", &s->card);
331 s->voice = AUD_open_out (
341 error_setg (errp, "Initializing audio voice failed");
345 s->samples = AUD_get_buffer_size_out (s->voice) >> SHIFT;
346 s->mixbuf = g_malloc0 (s->samples << SHIFT);
348 adlib_portio_list[0].offset = s->port;
349 adlib_portio_list[1].offset = s->port + 8;
350 portio_list_init (&s->port_list, OBJECT(s), adlib_portio_list, s, "adlib");
351 portio_list_add (&s->port_list, isa_address_space_io(&s->parent_obj), 0);
354 static Property adlib_properties[] = {
355 DEFINE_PROP_UINT32 ("iobase", AdlibState, port, 0x220),
356 DEFINE_PROP_UINT32 ("freq", AdlibState, freq, 44100),
357 DEFINE_PROP_END_OF_LIST (),
360 static void adlib_class_initfn (ObjectClass *klass, void *data)
362 DeviceClass *dc = DEVICE_CLASS (klass);
364 dc->realize = adlib_realizefn;
365 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
366 dc->desc = ADLIB_DESC;
367 dc->props = adlib_properties;
370 static const TypeInfo adlib_info = {
372 .parent = TYPE_ISA_DEVICE,
373 .instance_size = sizeof (AdlibState),
374 .class_init = adlib_class_initfn,
377 static int Adlib_init (ISABus *bus)
379 isa_create_simple (bus, TYPE_ADLIB);
383 static void adlib_register_types (void)
385 type_register_static (&adlib_info);
386 isa_register_soundhw("adlib", ADLIB_DESC, Adlib_init);
389 type_init (adlib_register_types)