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[qemu.git] / hw / audio / adlib.c
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85571bc7 1/*
1d14ffa9
FB
2 * QEMU Proxy for OPL2/3 emulation by MAME team
3 *
4 * Copyright (c) 2004-2005 Vassili Karpov (malc)
5 *
85571bc7
FB
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:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
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
22 * THE SOFTWARE.
23 */
9f0683d9 24
6086a565 25#include "qemu/osdep.h"
da34e65c 26#include "qapi/error.h"
83c9f4ca 27#include "hw/hw.h"
8a824e4d 28#include "hw/audio/soundhw.h"
e140e05c 29#include "audio/audio.h"
0d09e41a 30#include "hw/isa/isa.h"
85571bc7 31
9f0683d9
TS
32//#define DEBUG
33
1d14ffa9
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34#define ADLIB_KILL_TIMERS 1
35
8c444a19 36#define ADLIB_DESC "Yamaha YM3812 (OPL2)"
8c444a19 37
9f0683d9 38#ifdef DEBUG
1de7afc9 39#include "qemu/timer.h"
9f0683d9
TS
40#endif
41
fb065187
FB
42#define dolog(...) AUD_log ("adlib", __VA_ARGS__)
43#ifdef DEBUG
44#define ldebug(...) dolog (__VA_ARGS__)
45#else
46#define ldebug(...)
47#endif
85571bc7 48
47b43a1f 49#include "fmopl.h"
85571bc7 50#define SHIFT 1
85571bc7 51
8c444a19
PB
52#define TYPE_ADLIB "adlib"
53#define ADLIB(obj) OBJECT_CHECK(AdlibState, (obj), TYPE_ADLIB)
85571bc7
FB
54
55typedef struct {
8c444a19
PB
56 ISADevice parent_obj;
57
c0fe3827 58 QEMUSoundCard card;
8c444a19
PB
59 uint32_t freq;
60 uint32_t port;
1d14ffa9 61 int ticking[2];
85571bc7
FB
62 int enabled;
63 int active;
85571bc7 64 int bufpos;
1d14ffa9
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65#ifdef DEBUG
66 int64_t exp[2];
67#endif
85571bc7 68 int16_t *mixbuf;
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69 uint64_t dexp[2];
70 SWVoiceOut *voice;
71 int left, pos, samples;
72 QEMUAudioTimeStamp ats;
85571bc7 73 FM_OPL *opl;
848696bf 74 PortioList port_list;
85571bc7
FB
75} AdlibState;
76
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77static void adlib_stop_opl_timer (AdlibState *s, size_t n)
78{
1d14ffa9 79 OPLTimerOver (s->opl, n);
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80 s->ticking[n] = 0;
81}
82
83static void adlib_kill_timers (AdlibState *s)
84{
85 size_t i;
86
87 for (i = 0; i < 2; ++i) {
88 if (s->ticking[i]) {
89 uint64_t delta;
90
c0fe3827 91 delta = AUD_get_elapsed_usec_out (s->voice, &s->ats);
1d14ffa9
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92 ldebug (
93 "delta = %f dexp = %f expired => %d\n",
94 delta / 1000000.0,
95 s->dexp[i] / 1000000.0,
96 delta >= s->dexp[i]
97 );
98 if (ADLIB_KILL_TIMERS || delta >= s->dexp[i]) {
99 adlib_stop_opl_timer (s, i);
100 AUD_init_time_stamp_out (s->voice, &s->ats);
101 }
102 }
103 }
104}
105
8307c294 106static void adlib_write(void *opaque, uint32_t nport, uint32_t val)
85571bc7
FB
107{
108 AdlibState *s = opaque;
109 int a = nport & 3;
85571bc7 110
85571bc7 111 s->active = 1;
1d14ffa9 112 AUD_set_active_out (s->voice, 1);
85571bc7 113
1d14ffa9
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114 adlib_kill_timers (s);
115
e8beeae4 116 OPLWrite (s->opl, a, val);
85571bc7
FB
117}
118
8307c294 119static uint32_t adlib_read(void *opaque, uint32_t nport)
85571bc7
FB
120{
121 AdlibState *s = opaque;
122 uint8_t data;
123 int a = nport & 3;
124
1d14ffa9 125 adlib_kill_timers (s);
85571bc7 126 data = OPLRead (s->opl, a);
68883a40 127
85571bc7
FB
128 return data;
129}
130
c57fbf50 131static void timer_handler (void *opaque, int c, double interval_Sec)
85571bc7 132{
639b49ef 133 AdlibState *s = opaque;
1d14ffa9
FB
134 unsigned n = c & 1;
135#ifdef DEBUG
136 double interval;
c0fe3827 137 int64_t exp;
85571bc7 138#endif
85571bc7 139
85571bc7 140 if (interval_Sec == 0.0) {
1d14ffa9 141 s->ticking[n] = 0;
85571bc7
FB
142 return;
143 }
1d14ffa9
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144
145 s->ticking[n] = 1;
146#ifdef DEBUG
73bcb24d 147 interval = NANOSECONDS_PER_SECOND * interval_Sec;
bc72ad67 148 exp = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + interval;
1d14ffa9
FB
149 s->exp[n] = exp;
150#endif
151
152 s->dexp[n] = interval_Sec * 1000000.0;
153 AUD_init_time_stamp_out (s->voice, &s->ats);
85571bc7
FB
154}
155
156static int write_audio (AdlibState *s, int samples)
157{
158 int net = 0;
1d14ffa9
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159 int pos = s->pos;
160
85571bc7 161 while (samples) {
1d14ffa9
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162 int nbytes, wbytes, wsampl;
163
164 nbytes = samples << SHIFT;
165 wbytes = AUD_write (
166 s->voice,
167 s->mixbuf + (pos << (SHIFT - 1)),
168 nbytes
169 );
170
171 if (wbytes) {
172 wsampl = wbytes >> SHIFT;
173
174 samples -= wsampl;
175 pos = (pos + wsampl) % s->samples;
176
177 net += wsampl;
178 }
179 else {
85571bc7 180 break;
1d14ffa9 181 }
85571bc7 182 }
1d14ffa9 183
85571bc7
FB
184 return net;
185}
186
1d14ffa9 187static void adlib_callback (void *opaque, int free)
85571bc7
FB
188{
189 AdlibState *s = opaque;
1d14ffa9 190 int samples, net = 0, to_play, written;
85571bc7 191
1d14ffa9
FB
192 samples = free >> SHIFT;
193 if (!(s->active && s->enabled) || !samples) {
194 return;
85571bc7 195 }
85571bc7 196
1d14ffa9
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197 to_play = audio_MIN (s->left, samples);
198 while (to_play) {
199 written = write_audio (s, to_play);
200
201 if (written) {
202 s->left -= written;
203 samples -= written;
204 to_play -= written;
205 s->pos = (s->pos + written) % s->samples;
206 }
207 else {
208 return;
209 }
210 }
85571bc7
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211
212 samples = audio_MIN (samples, s->samples - s->pos);
1d14ffa9
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213 if (!samples) {
214 return;
215 }
85571bc7 216
85571bc7 217 YM3812UpdateOne (s->opl, s->mixbuf + s->pos, samples);
85571bc7
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218
219 while (samples) {
1d14ffa9
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220 written = write_audio (s, samples);
221
222 if (written) {
223 net += written;
224 samples -= written;
225 s->pos = (s->pos + written) % s->samples;
226 }
227 else {
228 s->left = samples;
229 return;
230 }
85571bc7 231 }
85571bc7
FB
232}
233
234static void Adlib_fini (AdlibState *s)
235{
85571bc7
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236 if (s->opl) {
237 OPLDestroy (s->opl);
238 s->opl = NULL;
239 }
85571bc7 240
fb7da626 241 g_free(s->mixbuf);
85571bc7
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242
243 s->active = 0;
244 s->enabled = 0;
c0fe3827 245 AUD_remove_card (&s->card);
85571bc7
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246}
247
a8aec295 248static MemoryRegionPortio adlib_portio_list[] = {
a8aec295
JK
249 { 0, 4, 1, .read = adlib_read, .write = adlib_write, },
250 { 0, 2, 1, .read = adlib_read, .write = adlib_write, },
2b21fb57 251 { 0x388, 4, 1, .read = adlib_read, .write = adlib_write, },
a8aec295
JK
252 PORTIO_END_OF_LIST(),
253};
254
db895a1e 255static void adlib_realizefn (DeviceState *dev, Error **errp)
85571bc7 256{
8c444a19 257 AdlibState *s = ADLIB(dev);
1ea879e5 258 struct audsettings as;
c0fe3827 259
8f7e2c2c 260 s->opl = OPLCreate (3579545, s->freq);
85571bc7 261 if (!s->opl) {
db895a1e
AF
262 error_setg (errp, "OPLCreate %d failed", s->freq);
263 return;
85571bc7
FB
264 }
265 else {
639b49ef 266 OPLSetTimerHandler(s->opl, timer_handler, s);
85571bc7
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267 s->enabled = 1;
268 }
85571bc7 269
8c444a19 270 as.freq = s->freq;
c0fe3827
FB
271 as.nchannels = SHIFT;
272 as.fmt = AUD_FMT_S16;
d929eba5 273 as.endianness = AUDIO_HOST_ENDIANNESS;
c0fe3827 274
1a7dafce 275 AUD_register_card ("adlib", &s->card);
c0fe3827 276
1d14ffa9 277 s->voice = AUD_open_out (
c0fe3827 278 &s->card,
1d14ffa9
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279 s->voice,
280 "adlib",
281 s,
282 adlib_callback,
d929eba5 283 &as
1d14ffa9 284 );
85571bc7
FB
285 if (!s->voice) {
286 Adlib_fini (s);
db895a1e
AF
287 error_setg (errp, "Initializing audio voice failed");
288 return;
85571bc7
FB
289 }
290
1d14ffa9 291 s->samples = AUD_get_buffer_size_out (s->voice) >> SHIFT;
7267c094 292 s->mixbuf = g_malloc0 (s->samples << SHIFT);
85571bc7 293
7f0ba7bb
PB
294 adlib_portio_list[0].offset = s->port;
295 adlib_portio_list[1].offset = s->port + 8;
848696bf
KB
296 portio_list_init (&s->port_list, OBJECT(s), adlib_portio_list, s, "adlib");
297 portio_list_add (&s->port_list, isa_address_space_io(&s->parent_obj), 0);
85571bc7 298}
8c444a19
PB
299
300static Property adlib_properties[] = {
c7bcc85d 301 DEFINE_PROP_UINT32 ("iobase", AdlibState, port, 0x220),
8c444a19
PB
302 DEFINE_PROP_UINT32 ("freq", AdlibState, freq, 44100),
303 DEFINE_PROP_END_OF_LIST (),
304};
305
306static void adlib_class_initfn (ObjectClass *klass, void *data)
307{
308 DeviceClass *dc = DEVICE_CLASS (klass);
db895a1e
AF
309
310 dc->realize = adlib_realizefn;
125ee0ed 311 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
8c444a19
PB
312 dc->desc = ADLIB_DESC;
313 dc->props = adlib_properties;
314}
315
316static const TypeInfo adlib_info = {
317 .name = TYPE_ADLIB,
318 .parent = TYPE_ISA_DEVICE,
319 .instance_size = sizeof (AdlibState),
320 .class_init = adlib_class_initfn,
321};
322
36cd6f6f 323static int Adlib_init (ISABus *bus)
8c444a19
PB
324{
325 isa_create_simple (bus, TYPE_ADLIB);
326 return 0;
327}
328
329static void adlib_register_types (void)
330{
331 type_register_static (&adlib_info);
36cd6f6f 332 isa_register_soundhw("adlib", ADLIB_DESC, Adlib_init);
8c444a19
PB
333}
334
335type_init (adlib_register_types)
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