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22#include "emux_voice.h"
23#include <linux/slab.h>
24
25
26
27static void free_port(void *private);
28static void snd_emux_init_port(struct snd_emux_port *p);
29static int snd_emux_use(void *private_data, struct snd_seq_port_subscribe *info);
30static int snd_emux_unuse(void *private_data, struct snd_seq_port_subscribe *info);
31
32
33
34
35static struct snd_midi_op emux_ops = {
36 snd_emux_note_on,
37 snd_emux_note_off,
38 snd_emux_key_press,
39 snd_emux_terminate_note,
40 snd_emux_control,
41 snd_emux_nrpn,
42 snd_emux_sysex,
43};
44
45
46
47
48
49#define MIDI_CHANNELS 16
50
51
52
53
54#define DEFAULT_MIDI_TYPE (SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |\
55 SNDRV_SEQ_PORT_TYPE_MIDI_GM |\
56 SNDRV_SEQ_PORT_TYPE_MIDI_GS |\
57 SNDRV_SEQ_PORT_TYPE_MIDI_XG |\
58 SNDRV_SEQ_PORT_TYPE_HARDWARE |\
59 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
60
61
62
63
64
65
66
67int
68snd_emux_init_seq(struct snd_emux *emu, struct snd_card *card, int index)
69{
70 int i;
71 struct snd_seq_port_callback pinfo;
72 char tmpname[64];
73
74 emu->client = snd_seq_create_kernel_client(card, index,
75 "%s WaveTable", emu->name);
76 if (emu->client < 0) {
77 snd_printk(KERN_ERR "can't create client\n");
78 return -ENODEV;
79 }
80
81 if (emu->num_ports < 0) {
82 snd_printk(KERN_WARNING "seqports must be greater than zero\n");
83 emu->num_ports = 1;
84 } else if (emu->num_ports >= SNDRV_EMUX_MAX_PORTS) {
85 snd_printk(KERN_WARNING "too many ports."
86 "limited max. ports %d\n", SNDRV_EMUX_MAX_PORTS);
87 emu->num_ports = SNDRV_EMUX_MAX_PORTS;
88 }
89
90 memset(&pinfo, 0, sizeof(pinfo));
91 pinfo.owner = THIS_MODULE;
92 pinfo.use = snd_emux_use;
93 pinfo.unuse = snd_emux_unuse;
94 pinfo.event_input = snd_emux_event_input;
95
96 for (i = 0; i < emu->num_ports; i++) {
97 struct snd_emux_port *p;
98
99 sprintf(tmpname, "%s Port %d", emu->name, i);
100 p = snd_emux_create_port(emu, tmpname, MIDI_CHANNELS,
101 0, &pinfo);
102 if (p == NULL) {
103 snd_printk(KERN_ERR "can't create port\n");
104 return -ENOMEM;
105 }
106
107 p->port_mode = SNDRV_EMUX_PORT_MODE_MIDI;
108 snd_emux_init_port(p);
109 emu->ports[i] = p->chset.port;
110 emu->portptrs[i] = p;
111 }
112
113 return 0;
114}
115
116
117
118
119
120
121void
122snd_emux_detach_seq(struct snd_emux *emu)
123{
124 if (emu->voices)
125 snd_emux_terminate_all(emu);
126
127 mutex_lock(&emu->register_mutex);
128 if (emu->client >= 0) {
129 snd_seq_delete_kernel_client(emu->client);
130 emu->client = -1;
131 }
132 mutex_unlock(&emu->register_mutex);
133}
134
135
136
137
138
139
140struct snd_emux_port *
141snd_emux_create_port(struct snd_emux *emu, char *name,
142 int max_channels, int oss_port,
143 struct snd_seq_port_callback *callback)
144{
145 struct snd_emux_port *p;
146 int i, type, cap;
147
148
149 if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
150 snd_printk(KERN_ERR "no memory\n");
151 return NULL;
152 }
153 p->chset.channels = kcalloc(max_channels, sizeof(struct snd_midi_channel), GFP_KERNEL);
154 if (p->chset.channels == NULL) {
155 snd_printk(KERN_ERR "no memory\n");
156 kfree(p);
157 return NULL;
158 }
159 for (i = 0; i < max_channels; i++)
160 p->chset.channels[i].number = i;
161 p->chset.private_data = p;
162 p->chset.max_channels = max_channels;
163 p->emu = emu;
164 p->chset.client = emu->client;
165#ifdef SNDRV_EMUX_USE_RAW_EFFECT
166 snd_emux_create_effect(p);
167#endif
168 callback->private_free = free_port;
169 callback->private_data = p;
170
171 cap = SNDRV_SEQ_PORT_CAP_WRITE;
172 if (oss_port) {
173 type = SNDRV_SEQ_PORT_TYPE_SPECIFIC;
174 } else {
175 type = DEFAULT_MIDI_TYPE;
176 cap |= SNDRV_SEQ_PORT_CAP_SUBS_WRITE;
177 }
178
179 p->chset.port = snd_seq_event_port_attach(emu->client, callback,
180 cap, type, max_channels,
181 emu->max_voices, name);
182
183 return p;
184}
185
186
187
188
189
190static void
191free_port(void *private_data)
192{
193 struct snd_emux_port *p;
194
195 p = private_data;
196 if (p) {
197#ifdef SNDRV_EMUX_USE_RAW_EFFECT
198 snd_emux_delete_effect(p);
199#endif
200 kfree(p->chset.channels);
201 kfree(p);
202 }
203}
204
205
206#define DEFAULT_DRUM_FLAGS (1<<9)
207
208
209
210
211static void
212snd_emux_init_port(struct snd_emux_port *p)
213{
214 p->drum_flags = DEFAULT_DRUM_FLAGS;
215 p->volume_atten = 0;
216
217 snd_emux_reset_port(p);
218}
219
220
221
222
223
224void
225snd_emux_reset_port(struct snd_emux_port *port)
226{
227 int i;
228
229
230 snd_emux_sounds_off_all(port);
231
232 snd_midi_channel_set_clear(&port->chset);
233
234#ifdef SNDRV_EMUX_USE_RAW_EFFECT
235 snd_emux_clear_effect(port);
236#endif
237
238
239 port->ctrls[EMUX_MD_DEF_BANK] = 0;
240 port->ctrls[EMUX_MD_DEF_DRUM] = 0;
241 port->ctrls[EMUX_MD_REALTIME_PAN] = 1;
242
243 for (i = 0; i < port->chset.max_channels; i++) {
244 struct snd_midi_channel *chan = port->chset.channels + i;
245 chan->drum_channel = ((port->drum_flags >> i) & 1) ? 1 : 0;
246 }
247}
248
249
250
251
252
253int
254snd_emux_event_input(struct snd_seq_event *ev, int direct, void *private_data,
255 int atomic, int hop)
256{
257 struct snd_emux_port *port;
258
259 port = private_data;
260 if (snd_BUG_ON(!port || !ev))
261 return -EINVAL;
262
263 snd_midi_process_event(&emux_ops, ev, &port->chset);
264
265 return 0;
266}
267
268
269
270
271
272int
273snd_emux_inc_count(struct snd_emux *emu)
274{
275 emu->used++;
276 if (!try_module_get(emu->ops.owner))
277 goto __error;
278 if (!try_module_get(emu->card->module)) {
279 module_put(emu->ops.owner);
280 __error:
281 emu->used--;
282 return 0;
283 }
284 return 1;
285}
286
287
288
289
290
291void
292snd_emux_dec_count(struct snd_emux *emu)
293{
294 module_put(emu->card->module);
295 emu->used--;
296 if (emu->used <= 0)
297 snd_emux_terminate_all(emu);
298 module_put(emu->ops.owner);
299}
300
301
302
303
304
305static int
306snd_emux_use(void *private_data, struct snd_seq_port_subscribe *info)
307{
308 struct snd_emux_port *p;
309 struct snd_emux *emu;
310
311 p = private_data;
312 if (snd_BUG_ON(!p))
313 return -EINVAL;
314 emu = p->emu;
315 if (snd_BUG_ON(!emu))
316 return -EINVAL;
317
318 mutex_lock(&emu->register_mutex);
319 snd_emux_init_port(p);
320 snd_emux_inc_count(emu);
321 mutex_unlock(&emu->register_mutex);
322 return 0;
323}
324
325
326
327
328static int
329snd_emux_unuse(void *private_data, struct snd_seq_port_subscribe *info)
330{
331 struct snd_emux_port *p;
332 struct snd_emux *emu;
333
334 p = private_data;
335 if (snd_BUG_ON(!p))
336 return -EINVAL;
337 emu = p->emu;
338 if (snd_BUG_ON(!emu))
339 return -EINVAL;
340
341 mutex_lock(&emu->register_mutex);
342 snd_emux_sounds_off_all(p);
343 snd_emux_dec_count(emu);
344 mutex_unlock(&emu->register_mutex);
345 return 0;
346}
347
348
349
350
351
352int snd_emux_init_virmidi(struct snd_emux *emu, struct snd_card *card)
353{
354 int i;
355
356 emu->vmidi = NULL;
357 if (emu->midi_ports <= 0)
358 return 0;
359
360 emu->vmidi = kcalloc(emu->midi_ports, sizeof(struct snd_rawmidi *), GFP_KERNEL);
361 if (emu->vmidi == NULL)
362 return -ENOMEM;
363
364 for (i = 0; i < emu->midi_ports; i++) {
365 struct snd_rawmidi *rmidi;
366 struct snd_virmidi_dev *rdev;
367 if (snd_virmidi_new(card, emu->midi_devidx + i, &rmidi) < 0)
368 goto __error;
369 rdev = rmidi->private_data;
370 sprintf(rmidi->name, "%s Synth MIDI", emu->name);
371 rdev->seq_mode = SNDRV_VIRMIDI_SEQ_ATTACH;
372 rdev->client = emu->client;
373 rdev->port = emu->ports[i];
374 if (snd_device_register(card, rmidi) < 0) {
375 snd_device_free(card, rmidi);
376 goto __error;
377 }
378 emu->vmidi[i] = rmidi;
379
380 }
381 return 0;
382
383__error:
384
385 snd_emux_delete_virmidi(emu);
386 return -ENOMEM;
387}
388
389int snd_emux_delete_virmidi(struct snd_emux *emu)
390{
391 int i;
392
393 if (emu->vmidi == NULL)
394 return 0;
395
396 for (i = 0; i < emu->midi_ports; i++) {
397 if (emu->vmidi[i])
398 snd_device_free(emu->card, emu->vmidi[i]);
399 }
400 kfree(emu->vmidi);
401 emu->vmidi = NULL;
402 return 0;
403}
404
