374 lines
9.7 KiB
C
374 lines
9.7 KiB
C
/* -*- Mode: C ; c-basic-offset: 2 -*- */
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/*
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* LADI Session Handler (ladish)
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*
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* Copyright (C) 2009, 2010 Nedko Arnaudov <nedko@arnaudov.name>
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*
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**************************************************************************
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* This file contains implementation of the studio functionality
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* related to jack configuration
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**************************************************************************
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*
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* LADI Session Handler is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* LADI Session Handler 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
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* or write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "common.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <expat.h>
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#include "studio_internal.h"
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static
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bool
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ladish_studio_jack_conf_container_create(
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struct jack_conf_container ** container_ptr_ptr,
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const char * name)
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{
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struct jack_conf_container * container_ptr;
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container_ptr = malloc(sizeof(struct jack_conf_container));
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if (container_ptr == NULL)
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{
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log_error("malloc() failed to allocate struct jack_conf_container");
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goto fail;
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}
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container_ptr->name = strdup(name);
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if (container_ptr->name == NULL)
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{
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log_error("strdup() failed to duplicate \"%s\"", name);
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goto fail_free;
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}
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INIT_LIST_HEAD(&container_ptr->children);
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container_ptr->children_leafs = false;
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*container_ptr_ptr = container_ptr;
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return true;
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fail_free:
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free(container_ptr);
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fail:
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return false;
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}
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static
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bool
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ladish_studio_jack_conf_parameter_create(
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struct jack_conf_parameter ** parameter_ptr_ptr,
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const char * name)
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{
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struct jack_conf_parameter * parameter_ptr;
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parameter_ptr = malloc(sizeof(struct jack_conf_parameter));
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if (parameter_ptr == NULL)
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{
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log_error("malloc() failed to allocate struct jack_conf_parameter");
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goto fail;
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}
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parameter_ptr->name = strdup(name);
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if (parameter_ptr->name == NULL)
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{
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log_error("strdup() failed to duplicate \"%s\"", name);
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goto fail_free;
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}
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*parameter_ptr_ptr = parameter_ptr;
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return true;
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fail_free:
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free(parameter_ptr);
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fail:
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return false;
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}
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static
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void
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ladish_studio_jack_conf_parameter_destroy(
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struct jack_conf_parameter * parameter_ptr)
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{
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#if 0
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log_info("jack_conf_parameter destroy");
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switch (parameter_ptr->parameter.type)
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{
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case jack_boolean:
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log_info("%s value is %s (boolean)", parameter_ptr->name, parameter_ptr->parameter.value.boolean ? "true" : "false");
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break;
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case jack_string:
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log_info("%s value is %s (string)", parameter_ptr->name, parameter_ptr->parameter.value.string);
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break;
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case jack_byte:
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log_info("%s value is %u/%c (byte/char)", parameter_ptr->name, parameter_ptr->parameter.value.byte, (char)parameter_ptr->parameter.value.byte);
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break;
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case jack_uint32:
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log_info("%s value is %u (uint32)", parameter_ptr->name, (unsigned int)parameter_ptr->parameter.value.uint32);
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break;
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case jack_int32:
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log_info("%s value is %u (int32)", parameter_ptr->name, (signed int)parameter_ptr->parameter.value.int32);
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break;
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default:
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log_error("unknown jack parameter_ptr->parameter type %d (%s)", (int)parameter_ptr->parameter.type, parameter_ptr->name);
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break;
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}
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#endif
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if (parameter_ptr->parameter.type == jack_string)
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{
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free(parameter_ptr->parameter.value.string);
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}
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free(parameter_ptr->name);
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free(parameter_ptr);
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}
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static
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void
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ladish_studio_jack_conf_container_destroy(
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struct jack_conf_container * container_ptr)
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{
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struct list_head * node_ptr;
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//log_info("\"%s\" jack_conf_parameter destroy", container_ptr->name);
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if (!container_ptr->children_leafs)
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{
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while (!list_empty(&container_ptr->children))
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{
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node_ptr = container_ptr->children.next;
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list_del(node_ptr);
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ladish_studio_jack_conf_container_destroy(list_entry(node_ptr, struct jack_conf_container, siblings));
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}
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}
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else
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{
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while (!list_empty(&container_ptr->children))
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{
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node_ptr = container_ptr->children.next;
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list_del(node_ptr);
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ladish_studio_jack_conf_parameter_destroy(list_entry(node_ptr, struct jack_conf_parameter, siblings));
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}
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}
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free(container_ptr->name);
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free(container_ptr);
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}
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#define context_ptr ((struct conf_callback_context *)context)
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static
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bool
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ladish_studio_jack_conf_callback(
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void * context,
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bool leaf,
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const char * address,
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char * child)
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{
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char path[JACK_CONF_MAX_ADDRESS_SIZE];
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const char * component;
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char * dst;
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size_t len;
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bool is_set;
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struct jack_conf_container * parent_ptr;
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struct jack_conf_container * container_ptr;
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struct jack_conf_parameter * parameter_ptr;
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parent_ptr = context_ptr->parent_ptr;
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if (parent_ptr == NULL && strcmp(child, "drivers") == 0)
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{
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log_debug("ignoring drivers branch");
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return true;
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}
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dst = path;
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component = address;
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while (*component != 0)
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{
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len = strlen(component);
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memcpy(dst, component, len);
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dst[len] = ':';
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component += len + 1;
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dst += len + 1;
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}
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strcpy(dst, child);
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/* address always is same buffer as the one supplied through context pointer */
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ASSERT(context_ptr->address == address);
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dst = (char *)component;
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len = strlen(child) + 1;
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memcpy(dst, child, len);
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dst[len] = 0;
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if (leaf)
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{
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log_debug("%s (leaf)", path);
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if (parent_ptr == NULL)
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{
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log_error("jack conf parameters can't appear in root container");
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return false;
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}
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if (!parent_ptr->children_leafs)
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{
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if (!list_empty(&parent_ptr->children))
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{
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log_error("jack conf parameters cant be mixed with containers at same hierarchy level");
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return false;
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}
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parent_ptr->children_leafs = true;
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}
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if (!ladish_studio_jack_conf_parameter_create(¶meter_ptr, child))
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{
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log_error("jack_conf_parameter_create() failed");
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return false;
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}
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if (!jack_proxy_get_parameter_value(context_ptr->address, &is_set, ¶meter_ptr->parameter))
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{
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log_error("cannot get value of %s", path);
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return false;
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}
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if (is_set)
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{
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#if 0
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switch (parameter_ptr->parameter.type)
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{
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case jack_boolean:
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log_info("%s value is %s (boolean)", path, parameter_ptr->parameter.value.boolean ? "true" : "false");
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break;
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case jack_string:
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log_info("%s value is %s (string)", path, parameter_ptr->parameter.value.string);
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break;
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case jack_byte:
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log_info("%s value is %u/%c (byte/char)", path, parameter_ptr->parameter.value.byte, (char)parameter_ptr->parameter.value.byte);
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break;
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case jack_uint32:
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log_info("%s value is %u (uint32)", path, (unsigned int)parameter_ptr->parameter.value.uint32);
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break;
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case jack_int32:
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log_info("%s value is %u (int32)", path, (signed int)parameter_ptr->parameter.value.int32);
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break;
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default:
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log_error("unknown jack parameter_ptr->parameter type %d (%s)", (int)parameter_ptr->parameter.type, path);
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jack_conf_parameter_destroy(parameter_ptr);
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return false;
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}
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#endif
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parameter_ptr->parent_ptr = parent_ptr;
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memcpy(parameter_ptr->address, context_ptr->address, JACK_CONF_MAX_ADDRESS_SIZE);
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list_add_tail(¶meter_ptr->siblings, &parent_ptr->children);
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list_add_tail(¶meter_ptr->leaves, &g_studio.jack_params);
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}
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else
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{
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ladish_studio_jack_conf_parameter_destroy(parameter_ptr);
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}
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}
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else
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{
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log_debug("%s (container)", path);
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if (parent_ptr != NULL && parent_ptr->children_leafs)
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{
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log_error("jack conf containers cant be mixed with parameters at same hierarchy level");
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return false;
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}
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if (!ladish_studio_jack_conf_container_create(&container_ptr, child))
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{
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log_error("jack_conf_container_create() failed");
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return false;
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}
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container_ptr->parent_ptr = parent_ptr;
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if (parent_ptr == NULL)
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{
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list_add_tail(&container_ptr->siblings, &g_studio.jack_conf);
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}
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else
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{
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list_add_tail(&container_ptr->siblings, &parent_ptr->children);
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}
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context_ptr->parent_ptr = container_ptr;
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if (!jack_proxy_read_conf_container(context_ptr->address, context, ladish_studio_jack_conf_callback))
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{
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log_error("cannot read container %s", path);
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return false;
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}
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context_ptr->parent_ptr = parent_ptr;
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}
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*dst = 0;
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return true;
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}
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#undef context_ptr
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void ladish_studio_jack_conf_clear(void)
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{
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struct list_head * node_ptr;
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INIT_LIST_HEAD(&g_studio.jack_params); /* we will destroy the leaves as part of tree destroy traversal */
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while (!list_empty(&g_studio.jack_conf))
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{
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node_ptr = g_studio.jack_conf.next;
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list_del(node_ptr);
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ladish_studio_jack_conf_container_destroy(list_entry(node_ptr, struct jack_conf_container, siblings));
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}
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g_studio.jack_conf_valid = false;
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}
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bool ladish_studio_fetch_jack_settings(void)
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{
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struct conf_callback_context context;
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ladish_studio_jack_conf_clear();
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context.address[0] = 0;
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context.container_ptr = &g_studio.jack_conf;
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context.parent_ptr = NULL;
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if (!jack_proxy_read_conf_container(context.address, &context, ladish_studio_jack_conf_callback))
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{
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log_error("jack_proxy_read_conf_container() failed.");
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return false;
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}
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return true;
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}
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