diff options
Diffstat (limited to 'src/modules/module-session-manager/client-session/session.c')
| -rw-r--r-- | src/modules/module-session-manager/client-session/session.c | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/src/modules/module-session-manager/client-session/session.c b/src/modules/module-session-manager/client-session/session.c new file mode 100644 index 0000000..87c1b96 --- /dev/null +++ b/src/modules/module-session-manager/client-session/session.c @@ -0,0 +1,344 @@ +/* PipeWire + * + * Copyright © 2019 Collabora Ltd. + * @author George Kiagiadakis <george.kiagiadakis@collabora.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include <stdbool.h> +#include <string.h> + +#include <pipewire/impl.h> +#include <pipewire/extensions/session-manager.h> + +#include <spa/pod/filter.h> + +#include "session.h" +#include "client-session.h" + +#define NAME "session" + +struct resource_data { + struct session *session; + struct spa_hook object_listener; + uint32_t n_subscribe_ids; + uint32_t subscribe_ids[32]; +}; + +#define pw_session_resource(r,m,v,...) \ + pw_resource_call(r,struct pw_session_events,m,v,__VA_ARGS__) +#define pw_session_resource_info(r,...) \ + pw_session_resource(r,info,0,__VA_ARGS__) +#define pw_session_resource_param(r,...) \ + pw_session_resource(r,param,0,__VA_ARGS__) + +static int session_enum_params (void *object, int seq, + uint32_t id, uint32_t start, uint32_t num, + const struct spa_pod *filter) +{ + struct pw_resource *resource = object; + struct resource_data *data = pw_resource_get_user_data(resource); + struct session *this = data->session; + struct spa_pod *result; + struct spa_pod *param; + uint8_t buffer[1024]; + struct spa_pod_builder b = { 0 }; + uint32_t index; + uint32_t next = start; + uint32_t count = 0; + + while (true) { + index = next++; + if (index >= this->n_params) + break; + + param = this->params[index]; + + if (param == NULL || !spa_pod_is_object_id(param, id)) + continue; + + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + if (spa_pod_filter(&b, &result, param, filter) != 0) + continue; + + pw_log_debug(NAME" %p: %d param %u", this, seq, index); + + pw_session_resource_param(resource, seq, id, index, next, result); + + if (++count == num) + break; + } + return 0; +} + +static int session_subscribe_params (void *object, uint32_t *ids, uint32_t n_ids) +{ + struct pw_resource *resource = object; + struct resource_data *data = pw_resource_get_user_data(resource); + uint32_t i; + + n_ids = SPA_MIN(n_ids, SPA_N_ELEMENTS(data->subscribe_ids)); + data->n_subscribe_ids = n_ids; + + for (i = 0; i < n_ids; i++) { + data->subscribe_ids[i] = ids[i]; + pw_log_debug(NAME" %p: resource %d subscribe param %u", + data->session, pw_resource_get_id(resource), ids[i]); + session_enum_params(resource, 1, ids[i], 0, UINT32_MAX, NULL); + } + return 0; +} + +static int session_set_param (void *object, uint32_t id, uint32_t flags, + const struct spa_pod *param) +{ + struct pw_resource *resource = object; + struct resource_data *data = pw_resource_get_user_data(resource); + struct session *this = data->session; + + pw_client_session_resource_set_param(this->client_sess->resource, + id, flags, param); + + return 0; +} + +static const struct pw_session_methods methods = { + PW_VERSION_SESSION_METHODS, + .subscribe_params = session_subscribe_params, + .enum_params = session_enum_params, + .set_param = session_set_param, +}; + +struct emit_param_data { + struct session *this; + struct spa_pod *param; + uint32_t id; + uint32_t index; + uint32_t next; +}; + +static int emit_param(void *_data, struct pw_resource *resource) +{ + struct emit_param_data *d = _data; + struct resource_data *data; + uint32_t i; + + data = pw_resource_get_user_data(resource); + for (i = 0; i < data->n_subscribe_ids; i++) { + if (data->subscribe_ids[i] == d->id) { + pw_session_resource_param(resource, 1, + d->id, d->index, d->next, d->param); + } + } + return 0; +} + +static void session_notify_subscribed(struct session *this, + uint32_t index, uint32_t next) +{ + struct pw_global *global = this->global; + struct emit_param_data data; + struct spa_pod *param = this->params[index]; + + if (!param || !spa_pod_is_object (param)) + return; + + data.this = this; + data.param = param; + data.id = SPA_POD_OBJECT_ID (param); + data.index = index; + data.next = next; + + pw_global_for_each_resource(global, emit_param, &data); +} + +static int emit_info(void *data, struct pw_resource *resource) +{ + struct session *this = data; + pw_session_resource_info(resource, &this->info); + return 0; +} + +int session_update(struct session *this, + uint32_t change_mask, + uint32_t n_params, + const struct spa_pod **params, + const struct pw_session_info *info) +{ + if (change_mask & PW_CLIENT_SESSION_UPDATE_PARAMS) { + uint32_t i; + + pw_log_debug(NAME" %p: update %d params", this, n_params); + + for (i = 0; i < this->n_params; i++) + free(this->params[i]); + this->n_params = n_params; + if (this->n_params == 0) { + free(this->params); + this->params = NULL; + } else { + void *p; + p = pw_reallocarray(this->params, n_params, sizeof(struct spa_pod*)); + if (p == NULL) { + free(this->params); + this->params = NULL; + this->n_params = 0; + goto no_mem; + } + this->params = p; + } + for (i = 0; i < this->n_params; i++) { + this->params[i] = params[i] ? spa_pod_copy(params[i]) : NULL; + session_notify_subscribed(this, i, i+1); + } + } + + if (change_mask & PW_CLIENT_SESSION_UPDATE_INFO) { + if (info->change_mask & PW_SESSION_CHANGE_MASK_PROPS) + pw_properties_update(this->props, info->props); + + if (info->change_mask & PW_SESSION_CHANGE_MASK_PARAMS) { + this->info.n_params = info->n_params; + if (info->n_params == 0) { + free(this->info.params); + this->info.params = NULL; + } else { + void *p; + p = pw_reallocarray(this->info.params, info->n_params, sizeof(struct spa_param_info)); + if (p == NULL) { + free(this->info.params); + this->info.params = NULL; + this->info.n_params = 0; + goto no_mem; + } + this->info.params = p; + memcpy(this->info.params, info->params, info->n_params * sizeof(struct spa_param_info)); + } + } + this->info.change_mask = info->change_mask; + pw_global_for_each_resource(this->global, emit_info, this); + this->info.change_mask = 0; + } + + return 0; + + no_mem: + pw_log_error(NAME" can't update: no memory"); + pw_resource_error(this->client_sess->resource, -ENOMEM, + NAME" can't update: no memory"); + return -ENOMEM; +} + +static int session_bind(void *_data, struct pw_impl_client *client, + uint32_t permissions, uint32_t version, uint32_t id) +{ + struct session *this = _data; + struct pw_global *global = this->global; + struct pw_resource *resource; + struct resource_data *data; + + resource = pw_resource_new(client, id, permissions, + pw_global_get_type(global), version, sizeof(*data)); + if (resource == NULL) + goto no_mem; + + data = pw_resource_get_user_data(resource); + data->session = this; + + pw_resource_add_object_listener(resource, &data->object_listener, + &methods, resource); + + pw_log_debug(NAME" %p: bound to %d", this, pw_resource_get_id(resource)); + pw_global_add_resource(global, resource); + + this->info.change_mask = PW_SESSION_CHANGE_MASK_ALL; + pw_session_resource_info(resource, &this->info); + this->info.change_mask = 0; + + return 0; + + no_mem: + pw_log_error(NAME" can't create resource: no memory"); + pw_resource_error(this->client_sess->resource, -ENOMEM, + NAME" can't create resource: no memory"); + return -ENOMEM; +} + +int session_init(struct session *this, + struct client_session *client_sess, + struct pw_context *context, + struct pw_properties *properties) +{ + static const char * const keys[] = { + PW_KEY_OBJECT_SERIAL, + PW_KEY_FACTORY_ID, + PW_KEY_CLIENT_ID, + NULL + }; + + pw_log_debug(NAME" %p: new", this); + + this->client_sess = client_sess; + this->props = properties; + + this->global = pw_global_new (context, + PW_TYPE_INTERFACE_Session, + PW_VERSION_SESSION, + NULL, session_bind, this); + if (!this->global) + goto no_mem; + + pw_properties_setf(this->props, PW_KEY_OBJECT_ID, "%u", + pw_global_get_id(this->global)); + pw_properties_setf(this->props, PW_KEY_OBJECT_SERIAL, "%"PRIu64, + pw_global_get_serial(this->global)); + + this->info.version = PW_VERSION_SESSION_INFO; + this->info.id = pw_global_get_id(this->global); + this->info.props = &this->props->dict; + + pw_global_update_keys(this->global, &this->props->dict, keys); + + pw_resource_set_bound_id(client_sess->resource, this->info.id); + + return pw_global_register(this->global); + + no_mem: + pw_log_error(NAME" - can't create - out of memory"); + return -ENOMEM; +} + +void session_clear(struct session *this) +{ + uint32_t i; + + pw_log_debug(NAME" %p: destroy", this); + + pw_global_destroy(this->global); + + for (i = 0; i < this->n_params; i++) + free(this->params[i]); + free(this->params); + + free(this->info.params); + + pw_properties_free(this->props); +} |