summaryrefslogtreecommitdiffstats
path: root/src/modules/spa/spa-node.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/modules/spa/spa-node.c')
-rw-r--r--src/modules/spa/spa-node.c292
1 files changed, 292 insertions, 0 deletions
diff --git a/src/modules/spa/spa-node.c b/src/modules/spa/spa-node.c
new file mode 100644
index 0000000..1f8615b
--- /dev/null
+++ b/src/modules/spa/spa-node.c
@@ -0,0 +1,292 @@
+/* PipeWire
+ *
+ * Copyright © 2018 Wim Taymans
+ *
+ * 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 "config.h"
+
+#include <string.h>
+#include <stdio.h>
+#include <dlfcn.h>
+
+#include <spa/node/node.h>
+#include <spa/node/utils.h>
+#include <spa/utils/result.h>
+#include <spa/param/props.h>
+#include <spa/pod/iter.h>
+#include <spa/debug/types.h>
+
+#include "spa-node.h"
+
+struct impl {
+ struct pw_impl_node *this;
+
+ enum pw_spa_node_flags flags;
+
+ struct spa_handle *handle;
+ struct spa_node *node; /**< handle to SPA node */
+
+ struct spa_hook node_listener;
+ int init_pending;
+
+ void *user_data;
+
+ unsigned int async_init:1;
+};
+
+static void spa_node_free(void *data)
+{
+ struct impl *impl = data;
+ struct pw_impl_node *node = impl->this;
+
+ pw_log_debug("spa-node %p: free", node);
+
+ spa_hook_remove(&impl->node_listener);
+ if (impl->handle)
+ pw_unload_spa_handle(impl->handle);
+}
+
+static void complete_init(struct impl *impl)
+{
+ struct pw_impl_node *this = impl->this;
+
+ impl->init_pending = SPA_ID_INVALID;
+
+ if (SPA_FLAG_IS_SET(impl->flags, PW_SPA_NODE_FLAG_ACTIVATE))
+ pw_impl_node_set_active(this, true);
+
+ if (!SPA_FLAG_IS_SET(impl->flags, PW_SPA_NODE_FLAG_NO_REGISTER))
+ pw_impl_node_register(this, NULL);
+ else
+ pw_impl_node_initialized(this);
+}
+
+static void spa_node_result(void *data, int seq, int res, uint32_t type, const void *result)
+{
+ struct impl *impl = data;
+ struct pw_impl_node *node = impl->this;
+
+ if (seq == impl->init_pending) {
+ pw_log_debug("spa-node %p: init complete event %d %d", node, seq, res);
+ complete_init(impl);
+ }
+}
+
+static const struct pw_impl_node_events node_events = {
+ PW_VERSION_IMPL_NODE_EVENTS,
+ .free = spa_node_free,
+ .result = spa_node_result,
+};
+
+struct pw_impl_node *
+pw_spa_node_new(struct pw_context *context,
+ enum pw_spa_node_flags flags,
+ struct spa_node *node,
+ struct spa_handle *handle,
+ struct pw_properties *properties,
+ size_t user_data_size)
+{
+ struct pw_impl_node *this;
+ struct impl *impl;
+ int res;
+
+ this = pw_context_create_node(context, properties, sizeof(struct impl) + user_data_size);
+ if (this == NULL) {
+ res = -errno;
+ goto error_exit;
+ }
+
+ impl = pw_impl_node_get_user_data(this);
+ impl->this = this;
+ impl->node = node;
+ impl->handle = handle;
+ impl->flags = flags;
+
+ if (user_data_size > 0)
+ impl->user_data = SPA_PTROFF(impl, sizeof(struct impl), void);
+
+ pw_impl_node_add_listener(this, &impl->node_listener, &node_events, impl);
+ if ((res = pw_impl_node_set_implementation(this, impl->node)) < 0)
+ goto error_exit_clean_node;
+
+ if (flags & PW_SPA_NODE_FLAG_ASYNC) {
+ impl->init_pending = spa_node_sync(impl->node, res);
+ } else {
+ complete_init(impl);
+ }
+ return this;
+
+error_exit_clean_node:
+ pw_impl_node_destroy(this);
+ handle = NULL;
+error_exit:
+ if (handle)
+ pw_unload_spa_handle(handle);
+ errno = -res;
+ return NULL;
+
+}
+
+void *pw_spa_node_get_user_data(struct pw_impl_node *node)
+{
+ struct impl *impl = pw_impl_node_get_user_data(node);
+ return impl->user_data;
+}
+
+static int
+setup_props(struct pw_context *context, struct spa_node *spa_node, struct pw_properties *pw_props)
+{
+ int res;
+ struct spa_pod *props;
+ void *state = NULL;
+ const char *key;
+ uint32_t index = 0;
+ uint8_t buf[4096];
+ struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buf, sizeof(buf));
+ const struct spa_pod_prop *prop = NULL;
+
+ res = spa_node_enum_params_sync(spa_node,
+ SPA_PARAM_Props, &index, NULL, &props,
+ &b);
+ if (res != 1) {
+ if (res < 0)
+ pw_log_debug("spa_node_get_props result: %s", spa_strerror(res));
+ if (res == -ENOTSUP || res == -ENOENT)
+ res = 0;
+ return res;
+ }
+
+ while ((key = pw_properties_iterate(pw_props, &state))) {
+ uint32_t type = 0;
+
+ type = spa_debug_type_find_type(spa_type_props, key);
+ if (type == SPA_TYPE_None)
+ continue;
+
+ if ((prop = spa_pod_find_prop(props, prop, type))) {
+ const char *value = pw_properties_get(pw_props, key);
+
+ if (value == NULL)
+ continue;
+
+ pw_log_debug("configure prop %s to %s", key, value);
+
+ switch(prop->value.type) {
+ case SPA_TYPE_Bool:
+ SPA_POD_VALUE(struct spa_pod_bool, &prop->value) =
+ pw_properties_parse_bool(value);
+ break;
+ case SPA_TYPE_Id:
+ SPA_POD_VALUE(struct spa_pod_id, &prop->value) =
+ pw_properties_parse_int(value);
+ break;
+ case SPA_TYPE_Int:
+ SPA_POD_VALUE(struct spa_pod_int, &prop->value) =
+ pw_properties_parse_int(value);
+ break;
+ case SPA_TYPE_Long:
+ SPA_POD_VALUE(struct spa_pod_long, &prop->value) =
+ pw_properties_parse_int64(value);
+ break;
+ case SPA_TYPE_Float:
+ SPA_POD_VALUE(struct spa_pod_float, &prop->value) =
+ pw_properties_parse_float(value);
+ break;
+ case SPA_TYPE_Double:
+ SPA_POD_VALUE(struct spa_pod_double, &prop->value) =
+ pw_properties_parse_double(value);
+ break;
+ case SPA_TYPE_String:
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ if ((res = spa_node_set_param(spa_node, SPA_PARAM_Props, 0, props)) < 0) {
+ pw_log_debug("spa_node_set_props failed: %s", spa_strerror(res));
+ return res;
+ }
+ return 0;
+}
+
+
+struct pw_impl_node *pw_spa_node_load(struct pw_context *context,
+ const char *factory_name,
+ enum pw_spa_node_flags flags,
+ struct pw_properties *properties,
+ size_t user_data_size)
+{
+ struct pw_impl_node *this;
+ struct spa_node *spa_node;
+ int res;
+ struct spa_handle *handle;
+ void *iface;
+ const struct pw_properties *p;
+
+ if (properties) {
+ p = pw_context_get_properties(context);
+ pw_properties_set(properties, "clock.quantum-limit",
+ pw_properties_get(p, "default.clock.quantum-limit"));
+ }
+
+ handle = pw_context_load_spa_handle(context,
+ factory_name,
+ properties ? &properties->dict : NULL);
+ if (handle == NULL) {
+ res = -errno;
+ goto error_exit;
+ }
+
+ if ((res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_Node, &iface)) < 0) {
+ pw_log_error("can't get node interface %d", res);
+ goto error_exit_unload;
+ }
+ if (SPA_RESULT_IS_ASYNC(res))
+ flags |= PW_SPA_NODE_FLAG_ASYNC;
+
+ spa_node = iface;
+
+ if (properties != NULL) {
+ if ((res = setup_props(context, spa_node, properties)) < 0) {
+ pw_log_warn("can't setup properties: %s", spa_strerror(res));
+ }
+ }
+
+ this = pw_spa_node_new(context, flags,
+ spa_node, handle, properties, user_data_size);
+ if (this == NULL) {
+ res = -errno;
+ properties = NULL;
+ goto error_exit_unload;
+ }
+
+ return this;
+
+error_exit_unload:
+ pw_unload_spa_handle(handle);
+error_exit:
+ pw_properties_free(properties);
+ errno = -res;
+ return NULL;
+}