255 lines
7.0 KiB
C
255 lines
7.0 KiB
C
/* PipeWire
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*
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* Copyright © 2020 Georges Basile Stavracas Neto
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* Copyright © 2021 Wim Taymans <wim.taymans@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "module.h"
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static int module_unload(struct client *client, struct module *module);
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static void on_module_unload(void *obj, void *data, int res, uint32_t id)
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{
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struct module *module = obj;
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module_unload(NULL, module);
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}
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void module_schedule_unload(struct module *module)
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{
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struct impl *impl = module->impl;
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pw_work_queue_add(impl->work_queue, module, 0, on_module_unload, impl);
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}
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struct module *module_new(struct impl *impl, const struct module_methods *methods, size_t user_data)
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{
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struct module *module;
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module = calloc(1, sizeof(struct module) + user_data);
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if (module == NULL)
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return NULL;
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module->impl = impl;
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module->methods = methods;
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spa_hook_list_init(&module->hooks);
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module->user_data = SPA_MEMBER(module, sizeof(struct module), void);
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return module;
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}
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static void module_add_listener(struct module *module,
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struct spa_hook *listener,
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const struct module_events *events, void *data)
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{
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spa_hook_list_append(&module->hooks, listener, events, data);
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}
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static int module_load(struct client *client, struct module *module)
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{
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pw_log_info("load module id:%u name:%s", module->idx, module->name);
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if (module->methods->load == NULL)
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return -ENOTSUP;
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/* subscription event is sent when the module does a
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* module_emit_loaded() */
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return module->methods->load(client, module);
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}
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static void module_free(struct module *module)
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{
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struct impl *impl = module->impl;
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if (module->idx != SPA_ID_INVALID)
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pw_map_remove(&impl->modules, module->idx & INDEX_MASK);
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pw_work_queue_cancel(impl->work_queue, module, SPA_ID_INVALID);
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free((char*)module->name);
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free((char*)module->args);
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if (module->props)
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pw_properties_free(module->props);
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free(module);
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}
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static int module_unload(struct client *client, struct module *module)
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{
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struct impl *impl = module->impl;
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uint32_t module_idx = module->idx;
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int res = 0;
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/* Note that client can be NULL (when the module is being unloaded
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* internally and not by a client request */
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pw_log_info("unload module id:%u name:%s", module->idx, module->name);
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if (module->methods->unload)
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res = module->methods->unload(client, module);
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module_free(module);
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broadcast_subscribe_event(impl,
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SUBSCRIPTION_MASK_MODULE,
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SUBSCRIPTION_EVENT_REMOVE | SUBSCRIPTION_EVENT_MODULE,
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module_idx);
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return res;
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}
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/** utils */
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void module_args_add_props(struct pw_properties *props, const char *str)
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{
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char *s = strdup(str), *p = s, *e, f;
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const char *k, *v;
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while (*p) {
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e = strchr(p, '=');
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if (e == NULL)
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break;
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*e = '\0';
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k = p;
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p = e+1;
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if (*p == '\"') {
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p++;
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f = '\"';
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} else {
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f = ' ';
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}
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v = p;
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e = strchr(p, f);
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if (e == NULL)
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e = strchr(p, '\0');
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if (e == NULL)
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break;
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p = e;
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if (*e != '\0')
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p++;
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*e = '\0';
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pw_properties_set(props, k, v);
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}
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free(s);
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}
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int module_args_to_audioinfo(struct impl *impl, struct pw_properties *props, struct spa_audio_info_raw *info)
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{
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const char *str;
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uint32_t i;
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/* We don't use any incoming format setting and use our native format */
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spa_zero(*info);
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info->format = SPA_AUDIO_FORMAT_F32P;
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if ((str = pw_properties_get(props, "channels")) != NULL) {
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info->channels = pw_properties_parse_int(str);
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if (info->channels == 0 || info->channels > SPA_AUDIO_MAX_CHANNELS) {
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pw_log_error("invalid channels '%s'", str);
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return -EINVAL;
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}
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pw_properties_set(props, "channels", NULL);
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}
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if ((str = pw_properties_get(props, "channel_map")) != NULL) {
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struct channel_map map;
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channel_map_parse(str, &map);
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if (map.channels == 0 || map.channels > SPA_AUDIO_MAX_CHANNELS) {
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pw_log_error("invalid channel_map '%s'", str);
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return -EINVAL;
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}
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if (info->channels == 0)
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info->channels = map.channels;
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if (info->channels != map.channels) {
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pw_log_error("Mismatched channel map");
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return -EINVAL;
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}
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channel_map_to_positions(&map, info->position);
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pw_properties_set(props, "channel_map", NULL);
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} else {
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if (info->channels == 0)
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info->channels = impl->defs.sample_spec.channels;
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if (info->channels == impl->defs.channel_map.channels) {
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channel_map_to_positions(&impl->defs.channel_map, info->position);
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} else if (info->channels == 1) {
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info->position[0] = SPA_AUDIO_CHANNEL_MONO;
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} else if (info->channels == 2) {
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info->position[0] = SPA_AUDIO_CHANNEL_FL;
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info->position[1] = SPA_AUDIO_CHANNEL_FR;
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} else {
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/* FIXME add more mappings */
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for (i = 0; i < info->channels; i++)
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info->position[i] = SPA_AUDIO_CHANNEL_UNKNOWN;
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}
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}
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if ((str = pw_properties_get(props, "rate")) != NULL) {
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info->rate = pw_properties_parse_int(str);
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pw_properties_set(props, "rate", NULL);
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} else {
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info->rate = 0;
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}
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return 0;
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}
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#include "modules/registry.h"
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static const struct module_info module_list[] = {
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{ "module-loopback", create_module_loopback, },
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{ "module-null-sink", create_module_null_sink, },
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{ "module-native-protocol-tcp", create_module_native_protocol_tcp, },
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{ "module-remap-sink", create_module_remap_sink, },
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{ "module-remap-source", create_module_remap_source, },
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{ "module-simple-protocol-tcp", create_module_simple_protocol_tcp, },
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{ NULL, }
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};
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static const struct module_info *find_module_info(const char *name)
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{
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int i;
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for (i = 0; module_list[i].name != NULL; i++) {
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if (strcmp(module_list[i].name, name) == 0)
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return &module_list[i];
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}
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return NULL;
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}
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static struct module *create_module(struct client *client, const char *name, const char *args)
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{
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struct impl *impl = client->impl;
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const struct module_info *info;
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struct module *module;
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info = find_module_info(name);
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if (info == NULL) {
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errno = ENOENT;
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return NULL;
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}
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module = info->create(impl, args);
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if (module == NULL)
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return NULL;
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module->idx = pw_map_insert_new(&impl->modules, module);
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if (module->idx == SPA_ID_INVALID) {
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module_unload(client, module);
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return NULL;
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}
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module->name = strdup(name);
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module->args = args ? strdup(args) : NULL;
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module->idx |= MODULE_FLAG;
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return module;
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}
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