daemon/jack_dispatch.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
   6  *
   7  **************************************************************************
   8  * This file contains implementation of the graph dispatcher object
   9  **************************************************************************
  10  *
  11  * LADI Session Handler is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * LADI Session Handler is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
  23  * or write to the Free Software Foundation, Inc.,
  24  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include "jack_dispatch.h"
  28
  29 struct jack_dispatcher
  30 {
  31   graph_proxy_handle jack_graph;
  32   ladish_graph_handle studio_graph;
  33   uint64_t system_client_id;
  34   ladish_client_handle system_capture_client;
  35   ladish_client_handle system_playback_client;
  36 };
  37
  38 #define dispatcher_ptr ((struct jack_dispatcher *)context)
  39
  40 static void clear(void * context)
  41 {
  42   lash_info("clear");
  43 }
  44
  45 static void client_appeared(void * context, uint64_t id, const char * name)
  46 {
  47   ladish_client_handle client;
  48
  49   lash_info("client_appeared(%llu, %s)", (unsigned long long)id, name);
  50
  51   if (strcmp(name, "system") == 0)
  52   {
  53     dispatcher_ptr->system_client_id = id;
  54   }
  55   else
  56   {
  57     ladish_client_create(NULL, true, false, true, &client);
  58     ladish_client_set_graph_name(client, ladish_graph_get_opath(dispatcher_ptr->studio_graph), name);
  59     ladish_graph_add_client(dispatcher_ptr->studio_graph, client);
  60   }
  61 }
  62
  63 static void client_disappeared(void * context, uint64_t id)
  64 {
  65   lash_info("client_disappeared(%llu)", (unsigned long long)id);
  66
  67   if (id == dispatcher_ptr->system_client_id)
  68   {
  69     dispatcher_ptr->system_client_id = 0;
  70   }
  71 }
  72
  73 static void port_appeared(void * context, uint64_t client_id, uint64_t port_id, const char * port_name, bool is_input, bool is_terminal, bool is_midi)
  74 {
  75   lash_info("port_appeared(%llu, %llu, %s (%s, %s))", (unsigned long long)client_id, (unsigned long long)port_id, port_name, is_input ? "in" : "out", is_midi ? "midi" : "audio");
  76
  77   if (client_id == dispatcher_ptr->system_client_id)
  78   {
  79     if (!is_input && dispatcher_ptr->system_capture_client == NULL)
  80     {
  81       ladish_client_create(NULL, true, false, true, &dispatcher_ptr->system_capture_client);
  82       ladish_client_set_graph_name(dispatcher_ptr->system_capture_client, ladish_graph_get_opath(dispatcher_ptr->studio_graph), "Hardware Capture");
  83       ladish_graph_add_client(dispatcher_ptr->studio_graph, dispatcher_ptr->system_capture_client);
  84     }
  85     else if (is_input && dispatcher_ptr->system_playback_client == NULL)
  86     {
  87       ladish_client_create(NULL, true, false, true, &dispatcher_ptr->system_playback_client);
  88       ladish_client_set_graph_name(dispatcher_ptr->system_playback_client, ladish_graph_get_opath(dispatcher_ptr->studio_graph), "Hardware Playback");
  89       ladish_graph_add_client(dispatcher_ptr->studio_graph, dispatcher_ptr->system_playback_client);
  90     }
  91   }
  92 }
  93
  94 static void port_disappeared(void * context, uint64_t client_id, uint64_t port_id)
  95 {
  96   lash_info("port_disappeared(%llu)", (unsigned long long)port_id);
  97 }
  98
  99 static void ports_connected(void * context, uint64_t client1_id, uint64_t port1_id, uint64_t client2_id, uint64_t port2_id)
 100 {
 101   lash_info("ports_connected");
 102 }
 103
 104 static void ports_disconnected(void * context, uint64_t client1_id, uint64_t port1_id, uint64_t client2_id, uint64_t port2_id)
 105 {
 106   lash_info("ports_disconnected");
 107 }
 108
 109 #undef dispatcher_ptr
 110
 111 bool
 112 ladish_jack_dispatcher_create(
 113   graph_proxy_handle jack_graph,
 114   ladish_graph_handle studio_graph,
 115   ladish_jack_dispatcher_handle * handle_ptr)
 116 {
 117   struct jack_dispatcher * dispatcher_ptr;
 118
 119   dispatcher_ptr = malloc(sizeof(struct jack_dispatcher));
 120   if (dispatcher_ptr == NULL)
 121   {
 122     lash_error("malloc() failed for struct jack_dispatcher");
 123     return false;
 124   }
 125
 126   dispatcher_ptr->jack_graph = jack_graph;
 127   dispatcher_ptr->studio_graph = studio_graph;
 128   dispatcher_ptr->system_client_id = 0;
 129   dispatcher_ptr->system_capture_client = NULL;
 130   dispatcher_ptr->system_playback_client = NULL;
 131
 132   if (!graph_proxy_attach(
 133         jack_graph,
 134         dispatcher_ptr,
 135         clear,
 136         client_appeared,
 137         client_disappeared,
 138         port_appeared,
 139         port_disappeared,
 140         ports_connected,
 141         ports_disconnected))
 142   {
 143     free(dispatcher_ptr);
 144     return false;
 145   }
 146
 147   *handle_ptr = (ladish_jack_dispatcher_handle)dispatcher_ptr;
 148   return true;
 149 }
 150
 151 #define dispatcher_ptr ((struct jack_dispatcher *)handle)
 152
 153 void
 154 ladish_jack_dispatcher_destroy(
 155   ladish_jack_dispatcher_handle handle)
 156 {
 157   graph_proxy_detach((graph_proxy_handle)handle, dispatcher_ptr);
 158 }
 159
 160 #undef dispatcher_ptr