mirror of
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146 lines
4 KiB
C
146 lines
4 KiB
C
/* Pinos
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* Copyright (C) 2015 Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <dlfcn.h>
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#include <spa/include/spa/node.h>
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#include "spa-node.h"
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typedef struct {
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PinosSpaNode this;
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PinosCore *core;
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void *hnd;
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} PinosSpaNodeImpl;
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PinosSpaNode *
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pinos_spa_node_load (PinosCore *core,
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const char *lib,
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const char *factory_name,
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const char *name,
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PinosProperties *properties,
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SetupNode setup_func)
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{
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PinosSpaNode *this;
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PinosSpaNodeImpl *impl;
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SpaNode *spa_node;
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SpaClock *spa_clock;
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SpaResult res;
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SpaHandle *handle;
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void *hnd;
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uint32_t index;
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SpaEnumHandleFactoryFunc enum_func;
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const SpaHandleFactory *factory;
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void *iface;
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if ((hnd = dlopen (lib, RTLD_NOW)) == NULL) {
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pinos_log_error ("can't load %s: %s", lib, dlerror());
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return NULL;
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}
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if ((enum_func = dlsym (hnd, "spa_enum_handle_factory")) == NULL) {
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pinos_log_error ("can't find enum function");
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goto no_symbol;
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}
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for (index = 0; ; index++) {
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if ((res = enum_func (&factory, index)) < 0) {
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if (res != SPA_RESULT_ENUM_END)
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pinos_log_error ("can't enumerate factories: %d", res);
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goto enum_failed;
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}
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if (strcmp (factory->name, factory_name) == 0)
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break;
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}
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handle = calloc (1, factory->size);
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if ((res = spa_handle_factory_init (factory,
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handle,
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NULL,
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core->support,
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core->n_support)) < 0) {
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pinos_log_error ("can't make factory instance: %d", res);
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goto init_failed;
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}
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if ((res = spa_handle_get_interface (handle,
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core->uri.spa_node,
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&iface)) < 0) {
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pinos_log_error ("can't get interface %d", res);
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goto interface_failed;
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}
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spa_node = iface;
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if ((res = spa_handle_get_interface (handle,
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core->uri.spa_clock,
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&iface)) < 0) {
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iface = NULL;
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}
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spa_clock = iface;
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impl = calloc (1, sizeof (PinosSpaNodeImpl));
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impl->core = core;
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impl->hnd = hnd;
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this = &impl->this;
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if (setup_func != NULL) {
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if (setup_func (spa_node, properties) != SPA_RESULT_OK) {
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pinos_log_debug ("Unrecognized properties");
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}
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}
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this->node = pinos_node_new (core,
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name,
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spa_node,
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spa_clock,
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properties);
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this->lib = strdup (lib);
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this->factory_name = strdup (factory_name);
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this->handle = handle;
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return this;
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interface_failed:
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spa_handle_clear (handle);
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init_failed:
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free (handle);
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enum_failed:
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no_symbol:
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dlclose (hnd);
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return NULL;
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}
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void
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pinos_spa_node_destroy (PinosSpaNode * node)
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{
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PinosSpaNodeImpl *impl = SPA_CONTAINER_OF (node, PinosSpaNodeImpl, this);
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pinos_log_debug ("spa-node %p: destroy", impl);
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pinos_signal_emit (&node->destroy_signal, node);
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pinos_node_destroy (node->node);
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spa_handle_clear (node->handle);
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free (node->handle);
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free (node->lib);
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free (node->factory_name);
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dlclose (impl->hnd);
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free (impl);
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}
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