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-rw-r--r--src/modules/module-session-manager/client-endpoint/endpoint-stream.c352
1 files changed, 352 insertions, 0 deletions
diff --git a/src/modules/module-session-manager/client-endpoint/endpoint-stream.c b/src/modules/module-session-manager/client-endpoint/endpoint-stream.c
new file mode 100644
index 0000000..8dde6f7
--- /dev/null
+++ b/src/modules/module-session-manager/client-endpoint/endpoint-stream.c
@@ -0,0 +1,352 @@
+/* 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 "endpoint-stream.h"
+#include "client-endpoint.h"
+
+#define NAME "endpoint-stream"
+
+struct resource_data {
+ struct endpoint_stream *stream;
+ struct spa_hook object_listener;
+ uint32_t n_subscribe_ids;
+ uint32_t subscribe_ids[32];
+};
+
+#define pw_endpoint_stream_resource(r,m,v,...) \
+ pw_resource_call(r,struct pw_endpoint_stream_events,m,v,__VA_ARGS__)
+#define pw_endpoint_stream_resource_info(r,...) \
+ pw_endpoint_stream_resource(r,info,0,__VA_ARGS__)
+#define pw_endpoint_stream_resource_param(r,...) \
+ pw_endpoint_stream_resource(r,param,0,__VA_ARGS__)
+
+static int endpoint_stream_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 endpoint_stream *this = data->stream;
+ 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_endpoint_stream_resource_param(resource, seq, id, index, next, result);
+
+ if (++count == num)
+ break;
+ }
+ return 0;
+}
+
+static int endpoint_stream_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->stream, pw_resource_get_id(resource), ids[i]);
+ endpoint_stream_enum_params(resource, 1, ids[i], 0, UINT32_MAX, NULL);
+ }
+ return 0;
+}
+
+static int endpoint_stream_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 endpoint_stream *this = data->stream;
+
+ pw_client_endpoint_resource_set_param(this->client_ep->resource,
+ id, flags, param);
+
+ return 0;
+}
+
+static const struct pw_endpoint_stream_methods methods = {
+ PW_VERSION_ENDPOINT_STREAM_METHODS,
+ .subscribe_params = endpoint_stream_subscribe_params,
+ .enum_params = endpoint_stream_enum_params,
+ .set_param = endpoint_stream_set_param,
+};
+
+struct emit_param_data {
+ struct endpoint_stream *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_endpoint_stream_resource_param(resource, 1,
+ d->id, d->index, d->next, d->param);
+ }
+ }
+ return 0;
+}
+
+static void endpoint_stream_notify_subscribed(struct endpoint_stream *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 endpoint_stream *this = data;
+ pw_endpoint_stream_resource_info(resource, &this->info);
+ return 0;
+}
+
+int endpoint_stream_update(struct endpoint_stream *this,
+ uint32_t change_mask,
+ uint32_t n_params,
+ const struct spa_pod **params,
+ const struct pw_endpoint_stream_info *info)
+{
+ if (change_mask & PW_CLIENT_ENDPOINT_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;
+ endpoint_stream_notify_subscribed(this, i, i+1);
+ }
+ }
+
+ if (change_mask & PW_CLIENT_ENDPOINT_UPDATE_INFO) {
+ if (info->change_mask & PW_ENDPOINT_STREAM_CHANGE_MASK_LINK_PARAMS) {
+ free(this->info.link_params);
+ this->info.link_params = spa_pod_copy(info->link_params);
+ }
+
+ if (info->change_mask & PW_ENDPOINT_STREAM_CHANGE_MASK_PROPS)
+ pw_properties_update(this->props, info->props);
+
+ if (info->change_mask & PW_ENDPOINT_STREAM_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));
+ }
+ }
+
+ if (!this->info.name)
+ this->info.name = info->name ? strdup(info->name) : NULL;
+
+ 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_ep->resource, -ENOMEM,
+ NAME" can't update: no memory");
+ return -ENOMEM;
+}
+
+static int endpoint_stream_bind(void *_data, struct pw_impl_client *client,
+ uint32_t permissions, uint32_t version, uint32_t id)
+{
+ struct endpoint_stream *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->stream = 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_ENDPOINT_STREAM_CHANGE_MASK_ALL;
+ pw_endpoint_stream_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_ep->resource, -ENOMEM,
+ NAME" can't create resource: no memory");
+ return -ENOMEM;
+}
+
+int endpoint_stream_init(struct endpoint_stream *this,
+ uint32_t id, uint32_t endpoint_id,
+ struct client_endpoint *client_ep,
+ struct pw_context *context,
+ struct pw_properties *properties)
+{
+ pw_log_debug(NAME" %p: new", this);
+
+ this->client_ep = client_ep;
+ this->id = id;
+ this->props = properties;
+
+ pw_properties_setf(properties, PW_KEY_ENDPOINT_ID, "%u", endpoint_id);
+
+ properties = pw_properties_copy(properties);
+ if (!properties)
+ goto no_mem;
+
+ this->global = pw_global_new (context,
+ PW_TYPE_INTERFACE_EndpointStream,
+ PW_VERSION_ENDPOINT_STREAM,
+ properties, endpoint_stream_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_ENDPOINT_STREAM_INFO;
+ this->info.id = pw_global_get_id(this->global);
+ this->info.endpoint_id = endpoint_id;
+ this->info.props = &this->props->dict;
+
+ return pw_global_register(this->global);
+
+ no_mem:
+ pw_log_error(NAME" - can't create - out of memory");
+ return -ENOMEM;
+}
+
+void endpoint_stream_clear(struct endpoint_stream *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.name);
+ free(this->info.link_params);
+ free(this->info.params);
+
+ pw_properties_free(this->props);
+}