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
25 #include "qemu/osdep.h"
26 #include "qapi/error.h"
27 #include "qemu/module.h"
28 #include "hw/audio/soundhw.h"
29 #include "audio/audio.h"
30 #include "hw/isa/isa.h"
31 #include "hw/qdev-properties.h"
32 #include "qom/object.h"
36 #define ADLIB_KILL_TIMERS 1
38 #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__)
54 #define TYPE_ADLIB "adlib"
55 OBJECT_DECLARE_SIMPLE_TYPE(AdlibState, ADLIB)
73 int left, pos, samples;
74 QEMUAudioTimeStamp ats;
79 static void adlib_stop_opl_timer (AdlibState *s, size_t n)
81 OPLTimerOver (s->opl, n);
85 static void adlib_kill_timers (AdlibState *s)
89 for (i = 0; i < 2; ++i) {
93 delta = AUD_get_elapsed_usec_out (s->voice, &s->ats);
95 "delta = %f dexp = %f expired => %d\n",
97 s->dexp[i] / 1000000.0,
100 if (ADLIB_KILL_TIMERS || delta >= s->dexp[i]) {
101 adlib_stop_opl_timer (s, i);
102 AUD_init_time_stamp_out (s->voice, &s->ats);
108 static void adlib_write(void *opaque, uint32_t nport, uint32_t val)
110 AdlibState *s = opaque;
114 AUD_set_active_out (s->voice, 1);
116 adlib_kill_timers (s);
118 OPLWrite (s->opl, a, val);
121 static uint32_t adlib_read(void *opaque, uint32_t nport)
123 AdlibState *s = opaque;
126 adlib_kill_timers (s);
127 return OPLRead (s->opl, a);
130 static void timer_handler (void *opaque, int c, double interval_Sec)
132 AdlibState *s = opaque;
139 if (interval_Sec == 0.0) {
146 interval = NANOSECONDS_PER_SECOND * interval_Sec;
147 exp = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + interval;
151 s->dexp[n] = interval_Sec * 1000000.0;
152 AUD_init_time_stamp_out (s->voice, &s->ats);
155 static int write_audio (AdlibState *s, int samples)
161 int nbytes, wbytes, wsampl;
163 nbytes = samples << SHIFT;
166 s->mixbuf + (pos << (SHIFT - 1)),
171 wsampl = wbytes >> SHIFT;
174 pos = (pos + wsampl) % s->samples;
186 static void adlib_callback (void *opaque, int free)
188 AdlibState *s = opaque;
189 int samples, net = 0, to_play, written;
191 samples = free >> SHIFT;
192 if (!(s->active && s->enabled) || !samples) {
196 to_play = MIN (s->left, samples);
198 written = write_audio (s, to_play);
204 s->pos = (s->pos + written) % s->samples;
211 samples = MIN (samples, s->samples - s->pos);
216 YM3812UpdateOne (s->opl, s->mixbuf + s->pos, samples);
219 written = write_audio (s, samples);
224 s->pos = (s->pos + written) % s->samples;
233 static void Adlib_fini (AdlibState *s)
244 AUD_remove_card (&s->card);
247 static MemoryRegionPortio adlib_portio_list[] = {
248 { 0, 4, 1, .read = adlib_read, .write = adlib_write, },
249 { 0, 2, 1, .read = adlib_read, .write = adlib_write, },
250 { 0x388, 4, 1, .read = adlib_read, .write = adlib_write, },
251 PORTIO_END_OF_LIST(),
254 static void adlib_realizefn (DeviceState *dev, Error **errp)
256 AdlibState *s = ADLIB(dev);
257 struct audsettings as;
259 s->opl = OPLCreate (3579545, s->freq);
261 error_setg (errp, "OPLCreate %d failed", s->freq);
265 OPLSetTimerHandler(s->opl, timer_handler, s);
270 as.nchannels = SHIFT;
271 as.fmt = AUDIO_FORMAT_S16;
272 as.endianness = AUDIO_HOST_ENDIANNESS;
274 AUD_register_card ("adlib", &s->card);
276 s->voice = AUD_open_out (
286 error_setg (errp, "Initializing audio voice failed");
290 s->samples = AUD_get_buffer_size_out (s->voice) >> SHIFT;
291 s->mixbuf = g_malloc0 (s->samples << SHIFT);
293 adlib_portio_list[0].offset = s->port;
294 adlib_portio_list[1].offset = s->port + 8;
295 portio_list_init (&s->port_list, OBJECT(s), adlib_portio_list, s, "adlib");
296 portio_list_add (&s->port_list, isa_address_space_io(&s->parent_obj), 0);
299 static Property adlib_properties[] = {
300 DEFINE_AUDIO_PROPERTIES(AdlibState, card),
301 DEFINE_PROP_UINT32 ("iobase", AdlibState, port, 0x220),
302 DEFINE_PROP_UINT32 ("freq", AdlibState, freq, 44100),
303 DEFINE_PROP_END_OF_LIST (),
306 static void adlib_class_initfn (ObjectClass *klass, void *data)
308 DeviceClass *dc = DEVICE_CLASS (klass);
310 dc->realize = adlib_realizefn;
311 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
312 dc->desc = ADLIB_DESC;
313 device_class_set_props(dc, adlib_properties);
316 static const TypeInfo adlib_info = {
318 .parent = TYPE_ISA_DEVICE,
319 .instance_size = sizeof (AdlibState),
320 .class_init = adlib_class_initfn,
323 static void adlib_register_types (void)
325 type_register_static (&adlib_info);
326 deprecated_register_soundhw("adlib", ADLIB_DESC, 1, TYPE_ADLIB);
329 type_init (adlib_register_types)