30 #include <tinyalsa/plugin.h>
54 /** Encapulates the mixer plugin specific data */
56     /** Card number associated with the plugin */
60     /** Pointer to the plugin's ops */
62     /** Pointer to plugin responsible to service the controls */
63     struct mixer_plugin *plugin;  member
64     /** Handle to the plugin library */
71     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_get_elem_id()  local
74     if (offset >= plugin->num_controls) {  in mixer_plug_get_elem_id()
80     ctl = plugin->controls + offset;  in mixer_plug_get_elem_id()
140 void mixer_plug_notifier_cb(struct mixer_plugin *plugin)  in mixer_plug_notifier_cb()  argument
142     plugin->event_cnt++;  in mixer_plug_notifier_cb()
143     eventfd_write(plugin->eventfd, 1);  in mixer_plug_notifier_cb()
151     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_read_event()  local
155     result = plug_data->ops->read_event(plugin, ev, size);  in mixer_plug_read_event()
158         plugin->event_cnt -=  result / sizeof(struct snd_ctl_event);  in mixer_plug_read_event()
159         if (plugin->event_cnt == 0)  in mixer_plug_read_event()
160             eventfd_read(plugin->eventfd, &evfd);  in mixer_plug_read_event()
169     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_subscribe_events()  local
173         *subscribe = plugin->subscribed;  in mixer_plug_subscribe_events()
177     if (*subscribe && !plugin->subscribed) {  in mixer_plug_subscribe_events()
178         plug_data->ops->subscribe_events(plugin, &mixer_plug_notifier_cb);  in mixer_plug_subscribe_events()
179     } else if (plugin->subscribed && !*subscribe) {  in mixer_plug_subscribe_events()
180         plug_data->ops->subscribe_events(plugin, NULL);  in mixer_plug_subscribe_events()
182         if (plugin->event_cnt)  in mixer_plug_subscribe_events()
183             eventfd_read(plugin->eventfd, &evfd);  in mixer_plug_subscribe_events()
185         plugin->event_cnt = 0;  in mixer_plug_subscribe_events()
188     plugin->subscribed = *subscribe;  in mixer_plug_subscribe_events()
195     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_get_poll_fd()  local
197     if (plugin->eventfd != -1) {  in mixer_plug_get_poll_fd()
198         pfd[count].fd = plugin->eventfd;  in mixer_plug_get_poll_fd()
207     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_tlv_write()  local
211     ctl = plugin->controls + tlv->numid;  in mixer_plug_tlv_write()
214     return val_tlv->put(plugin, ctl, tlv);  in mixer_plug_tlv_write()
220     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_tlv_read()  local
224     ctl = plugin->controls + tlv->numid;  in mixer_plug_tlv_read()
227     return val_tlv->get(plugin, ctl, tlv);  in mixer_plug_tlv_read()
233     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_elem_write()  local
241     ctl = plugin->controls + ev->id.numid;  in mixer_plug_elem_write()
243     return ctl->put(plugin, ctl, ev);  in mixer_plug_elem_write()
249     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_elem_read()  local
257     ctl = plugin->controls + ev->id.numid;  in mixer_plug_elem_read()
259     return ctl->get(plugin, ctl, ev);  in mixer_plug_elem_read()
266     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_get_elem_info()  local
275     ctl = plugin->controls + einfo->id.numid;  in mixer_plug_get_elem_info()
307     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_get_elem_list()  local
312     elist->count = plugin->num_controls;  in mixer_plug_get_elem_list()
342     struct mixer_plugin *plugin = plug_data->plugin;  in mixer_plug_close()  local
345     if (plugin->event_cnt)  in mixer_plug_close()
346         eventfd_read(plugin->eventfd, &evfd);  in mixer_plug_close()
348     plug_data->ops->close(&plugin);  in mixer_plug_close()
392         /* TODO: plugin should support ioctl */  in mixer_plug_ioctl()
411     struct mixer_plugin *plugin = NULL;  in mixer_plugin_open()  local
452     ret = plug_data->ops->open(&plugin, card);  in mixer_plugin_open()
454         fprintf(stderr, "%s: failed to open plugin, err: %d\n",  in mixer_plugin_open()
459     plug_data->plugin = plugin;  in mixer_plugin_open()
462     plugin->eventfd = eventfd(0, 0);  in mixer_plugin_open()