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ladish/daemon/virtualizer.c

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/* -*- Mode: C ; c-basic-offset: 2 -*- */
/*
* LADI Session Handler (ladish)
*
* Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
*
**************************************************************************
* This file contains implementation of the graph virtualizer object
**************************************************************************
*
* LADI Session Handler is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* LADI Session Handler is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
* or write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "virtualizer.h"
#include "../dbus_constants.h"
#include "a2j_proxy.h"
#include "procfs.h"
#include "app_supervisor.h"
#include "studio_internal.h"
struct virtualizer
{
graph_proxy_handle jack_graph_proxy;
ladish_graph_handle jack_graph;
ladish_graph_handle studio_graph;
uint64_t system_client_id;
};
/* 47c1cd18-7b21-4389-bec4-6e0658e1d6b1 */
UUID_DEFINE(g_system_capture_uuid,0x47,0xC1,0xCD,0x18,0x7B,0x21,0x43,0x89,0xBE,0xC4,0x6E,0x06,0x58,0xE1,0xD6,0xB1);
/* b2a0bb06-28d8-4bfe-956e-eb24378f9629 */
UUID_DEFINE(g_system_playback_uuid,0xB2,0xA0,0xBB,0x06,0x28,0xD8,0x4B,0xFE,0x95,0x6E,0xEB,0x24,0x37,0x8F,0x96,0x29);
/* be23a242-e2b2-11de-b795-002618af5e42 */
UUID_DEFINE(g_a2j_uuid,0xBE,0x23,0xA2,0x42,0xE2,0xB2,0x11,0xDE,0xB7,0x95,0x00,0x26,0x18,0xAF,0x5E,0x42);
#define virtualizer_ptr ((struct virtualizer *)context)
static void clear(void * context)
{
log_info("clear");
}
static void client_appeared(void * context, uint64_t id, const char * name)
{
ladish_client_handle client;
const char * a2j_name;
bool is_a2j;
int64_t pid;
unsigned long long ppid;
char * app_name;
log_info("client_appeared(%"PRIu64", %s)", id, name);
if (!graph_proxy_get_client_pid(virtualizer_ptr->jack_graph_proxy, id, &pid))
{
pid = 0;
}
log_info("client pid is %"PRId64, pid);
app_name = NULL;
if (pid != 0)
{
ppid = (unsigned long long)pid;
loop:
app_name = ladish_app_supervisor_search_app(g_studio.app_supervisor, ppid);
if (app_name == NULL)
{
ppid = procfs_get_process_parent(ppid);
if (ppid != 0)
{
//log_info("parent pid %llu", ppid);
goto loop;
}
}
}
if (app_name != NULL)
{
log_info("app name is '%s'", app_name);
}
a2j_name = a2j_proxy_get_jack_client_name_cached();
is_a2j = a2j_name != NULL && strcmp(a2j_name, name) == 0;
if (is_a2j)
{
client = ladish_graph_find_client_by_uuid(virtualizer_ptr->jack_graph, g_a2j_uuid);
}
else
{
client = ladish_graph_find_client_by_name(virtualizer_ptr->jack_graph, name);
}
if (client != NULL)
{
log_info("found existing client");
ASSERT(ladish_client_get_jack_id(client) == 0); /* two JACK clients with same name? */
ladish_client_set_jack_id(client, id);
ladish_graph_show_client(virtualizer_ptr->jack_graph, client);
goto exit;
}
if (!ladish_client_create(is_a2j ? g_a2j_uuid : NULL, true, false, false, &client))
{
log_error("ladish_client_create() failed. Ignoring client %"PRIu64" (%s)", id, name);
return;
}
ladish_client_set_jack_id(client, id);
if (!ladish_graph_add_client(virtualizer_ptr->jack_graph, client, name, false))
{
log_error("ladish_graph_add_client() failed to add client %"PRIu64" (%s) to JACK graph", id, name);
ladish_client_destroy(client);
return;
}
exit:
if (strcmp(name, "system") == 0)
{
virtualizer_ptr->system_client_id = id;
}
if (app_name != NULL)
{
free(app_name);
}
}
static void client_disappeared(void * context, uint64_t id)
{
ladish_client_handle client;
log_info("client_disappeared(%"PRIu64")", id);
client = ladish_graph_find_client_by_jack_id(virtualizer_ptr->jack_graph, id);
if (client == NULL)
{
log_error("Unknown JACK client with id %"PRIu64" disappeared", id);
return;
}
if (id == virtualizer_ptr->system_client_id)
{
virtualizer_ptr->system_client_id = 0;
}
if (true) /* if client is supposed to be persisted */
{
ladish_client_set_jack_id(client, 0);
ladish_graph_hide_client(virtualizer_ptr->jack_graph, client);
}
else
{
ladish_graph_remove_client(virtualizer_ptr->jack_graph, client, false);
ladish_client_destroy(client);
}
}
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)
{
ladish_client_handle jack_client;
ladish_client_handle studio_client;
ladish_port_handle port;
uint32_t type;
uint32_t flags;
const char * jack_client_name;
bool is_a2j;
uuid_t client_uuid;
char * alsa_client_name;
char * alsa_port_name;
uint32_t alsa_client_id;
log_info("port_appeared(%"PRIu64", %"PRIu64", %s (%s, %s))", client_id, port_id, port_name, is_input ? "in" : "out", is_midi ? "midi" : "audio");
jack_client = ladish_graph_find_client_by_jack_id(virtualizer_ptr->jack_graph, client_id);
if (jack_client == NULL)
{
log_error("Port of unknown JACK client with id %"PRIu64" appeared", client_id);
goto fail;
}
ladish_client_get_uuid(jack_client, client_uuid);
is_a2j = uuid_compare(client_uuid, g_a2j_uuid) == 0;
if (is_a2j)
{
log_info("a2j port appeared");
if (!a2j_proxy_map_jack_port(port_name, &alsa_client_name, &alsa_port_name, &alsa_client_id))
{
is_a2j = false;
}
else
{
log_info("a2j: '%s':'%s' (%"PRIu32")", alsa_client_name, alsa_port_name, alsa_client_id);
}
}
jack_client_name = ladish_graph_get_client_name(virtualizer_ptr->jack_graph, jack_client);
type = is_midi ? JACKDBUS_PORT_TYPE_MIDI : JACKDBUS_PORT_TYPE_AUDIO;
flags = is_input ? JACKDBUS_PORT_FLAG_INPUT : JACKDBUS_PORT_FLAG_OUTPUT;
if (is_terminal)
{
flags |= JACKDBUS_PORT_FLAG_TERMINAL;
}
port = ladish_graph_find_port_by_name(virtualizer_ptr->jack_graph, jack_client, port_name);
if (port != NULL)
{
log_info("found existing port");
ASSERT(ladish_port_get_jack_id(port) == 0); /* two JACK ports with same name? */
ladish_port_set_jack_id(port, port_id);
ladish_graph_adjust_port(virtualizer_ptr->jack_graph, port, type, flags);
ladish_graph_show_port(virtualizer_ptr->jack_graph, port);
studio_client = ladish_graph_get_port_client(virtualizer_ptr->studio_graph, port);
if (studio_client == NULL)
{
log_error("JACK port not found in studio graph");
ASSERT_NO_PASS;
goto free_alsa_names;
}
ladish_client_set_jack_id(studio_client, client_id);
ladish_graph_adjust_port(virtualizer_ptr->studio_graph, port, type, flags);
ladish_graph_show_port(virtualizer_ptr->studio_graph, port);
goto free_alsa_names;
}
if (!ladish_port_create(NULL, &port))
{
log_error("ladish_port_create() failed.");
goto free_alsa_names;
}
ladish_port_set_jack_id(port, port_id);
if (!ladish_graph_add_port(virtualizer_ptr->jack_graph, jack_client, port, port_name, type, flags, false))
{
log_error("ladish_graph_add_port() failed.");
ladish_port_destroy(port);
goto free_alsa_names;
}
if (is_a2j)
{
studio_client = ladish_graph_find_client_by_name(virtualizer_ptr->studio_graph, alsa_client_name);
if (studio_client == NULL)
{
if (!ladish_client_create(g_a2j_uuid, true, false, true, &studio_client))
{
log_error("ladish_client_create() failed.");
goto free_alsa_names;
}
if (!ladish_graph_add_client(virtualizer_ptr->studio_graph, studio_client, alsa_client_name, false))
{
log_error("ladish_graph_add_client() failed.");
ladish_client_destroy(studio_client);
goto free_alsa_names;
}
}
port_name = alsa_port_name;
}
else if (client_id == virtualizer_ptr->system_client_id)
{
log_info("system client port appeared");
if (!is_input)
{ /* output capture port */
studio_client = ladish_graph_find_client_by_uuid(virtualizer_ptr->studio_graph, g_system_capture_uuid);
if (studio_client == NULL)
{
if (!ladish_client_create(g_system_capture_uuid, true, false, true, &studio_client))
{
log_error("ladish_client_create() failed.");
goto free_alsa_names;
}
if (!ladish_graph_add_client(virtualizer_ptr->studio_graph, studio_client, "Hardware Capture", false))
{
log_error("ladish_graph_add_client() failed.");
ladish_client_destroy(studio_client);
goto free_alsa_names;
}
}
}
else
{ /* input playback port */
studio_client = ladish_graph_find_client_by_uuid(virtualizer_ptr->studio_graph, g_system_playback_uuid);
if (studio_client == NULL)
{
if (!ladish_client_create(g_system_playback_uuid, true, false, true, &studio_client))
{
log_error("ladish_client_create() failed.");
goto free_alsa_names;
}
if (!ladish_graph_add_client(virtualizer_ptr->studio_graph, studio_client, "Hardware Playback", false))
{
ladish_client_destroy(studio_client);
goto free_alsa_names;
}
}
}
}
else
{ /* non-system client */
log_info("non-system client port appeared");
studio_client = ladish_graph_find_client_by_jack_id(virtualizer_ptr->studio_graph, client_id);
if (studio_client == NULL)
{
if (!ladish_client_create(NULL, false, false, false, &studio_client))
{
log_error("ladish_client_create() failed.");
goto free_alsa_names;
}
ladish_client_set_jack_id(studio_client, client_id);
if (!ladish_graph_add_client(virtualizer_ptr->studio_graph, studio_client, jack_client_name, false))
{
log_error("ladish_graph_add_client() failed to add client '%s' to studio graph", jack_client_name);
ladish_client_destroy(studio_client);
goto free_alsa_names;
}
}
}
if (!ladish_graph_add_port(virtualizer_ptr->studio_graph, studio_client, port, port_name, type, flags, false))
{
log_error("ladish_graph_add_port() failed.");
goto free_alsa_names;
}
free_alsa_names:
if (is_a2j)
{
free(alsa_client_name);
free(alsa_port_name);
}
fail:
return;
}
static void port_disappeared(void * context, uint64_t client_id, uint64_t port_id)
{
ladish_client_handle client;
ladish_port_handle port;
log_info("port_disappeared(%"PRIu64")", port_id);
client = ladish_graph_find_client_by_jack_id(virtualizer_ptr->jack_graph, client_id);
if (client == NULL)
{
log_error("Port of unknown JACK client with id %"PRIu64" disappeared", client_id);
return;
}
port = ladish_graph_find_port_by_jack_id(virtualizer_ptr->jack_graph, port_id);
if (port == NULL)
{
log_error("Unknown JACK port with id %"PRIu64" disappeared", port_id);
return;
}
if (true) /* if client is supposed to be persisted */
{
ladish_port_set_jack_id(port, 0);
ladish_graph_hide_port(virtualizer_ptr->jack_graph, port);
ladish_graph_hide_port(virtualizer_ptr->studio_graph, port);
client = ladish_graph_get_port_client(virtualizer_ptr->studio_graph, port);
if (ladish_graph_is_client_looks_empty(virtualizer_ptr->studio_graph, client))
{
ladish_graph_hide_client(virtualizer_ptr->studio_graph, client);
}
}
else
{
ladish_graph_remove_port(virtualizer_ptr->jack_graph, port);
client = ladish_graph_remove_port(virtualizer_ptr->studio_graph, port);
if (client != NULL)
{
if (ladish_graph_is_client_empty(virtualizer_ptr->studio_graph, client))
{
ladish_graph_remove_client(virtualizer_ptr->studio_graph, client, false);
}
}
}
}
static bool ports_connect_request(void * context, ladish_graph_handle graph_handle, ladish_port_handle port1, ladish_port_handle port2)
{
uint64_t port1_id;
uint64_t port2_id;
ASSERT(graph_handle == virtualizer_ptr->studio_graph);
log_info("virtualizer: ports connect request");
port1_id = ladish_port_get_jack_id(port1);
port2_id = ladish_port_get_jack_id(port2);
graph_proxy_connect_ports(virtualizer_ptr->jack_graph_proxy, port1_id, port2_id);
return true;
}
static bool ports_disconnect_request(void * context, ladish_graph_handle graph_handle, uint64_t connection_id)
{
ladish_port_handle port1;
ladish_port_handle port2;
uint64_t port1_id;
uint64_t port2_id;
log_info("virtualizer: ports disconnect request");
ASSERT(graph_handle == virtualizer_ptr->studio_graph);
if (!ladish_graph_get_connection_ports(virtualizer_ptr->studio_graph, connection_id, &port1, &port2))
{
log_error("cannot find ports that are disconnect-requested");
ASSERT_NO_PASS;
return false;
}
port1_id = ladish_port_get_jack_id(port1);
port2_id = ladish_port_get_jack_id(port2);
graph_proxy_disconnect_ports(virtualizer_ptr->jack_graph_proxy, port1_id, port2_id);
return true;
}
static void ports_connected(void * context, uint64_t client1_id, uint64_t port1_id, uint64_t client2_id, uint64_t port2_id)
{
ladish_port_handle port1;
ladish_port_handle port2;
uint64_t connection_id;
log_info("ports_connected %"PRIu64":%"PRIu64" %"PRIu64":%"PRIu64"", client1_id, port1_id, client2_id, port2_id);
port1 = ladish_graph_find_port_by_jack_id(virtualizer_ptr->jack_graph, port1_id);
if (port1 == NULL)
{
log_error("Unknown JACK port with id %"PRIu64" connected", port1_id);
return;
}
port2 = ladish_graph_find_port_by_jack_id(virtualizer_ptr->jack_graph, port2_id);
if (port2 == NULL)
{
log_error("Unknown JACK port with id %"PRIu64" connected", port2_id);
return;
}
ladish_graph_add_connection(virtualizer_ptr->jack_graph, port1, port2, false);
if (ladish_graph_find_connection(virtualizer_ptr->studio_graph, port1, port2, &connection_id))
{
log_info("showing hidden connection");
ladish_graph_show_connection(virtualizer_ptr->studio_graph, connection_id);
}
else
{
log_info("creating new connection");
ladish_graph_add_connection(virtualizer_ptr->studio_graph, port1, port2, false);
}
}
static void ports_disconnected(void * context, uint64_t client1_id, uint64_t port1_id, uint64_t client2_id, uint64_t port2_id)
{
ladish_port_handle port1;
ladish_port_handle port2;
uint64_t connection_id;
log_info("ports_disconnected %"PRIu64":%"PRIu64" %"PRIu64":%"PRIu64"", client1_id, port1_id, client2_id, port2_id);
port1 = ladish_graph_find_port_by_jack_id(virtualizer_ptr->jack_graph, port1_id);
if (port1 == NULL)
{
log_error("Unknown JACK port with id %"PRIu64" disconnected", port1_id);
return;
}
port2 = ladish_graph_find_port_by_jack_id(virtualizer_ptr->jack_graph, port2_id);
if (port2 == NULL)
{
log_error("Unknown JACK port with id %"PRIu64" disconnected", port2_id);
return;
}
if (ladish_graph_find_connection(virtualizer_ptr->jack_graph, port1, port2, &connection_id))
{
ladish_graph_remove_connection(virtualizer_ptr->jack_graph, connection_id);
}
else
{
log_error("ports %"PRIu64":%"PRIu64" and %"PRIu64":%"PRIu64" are not connected in the JACK graph", client1_id, port1_id, client2_id, port2_id);
}
if (ladish_graph_find_connection(virtualizer_ptr->studio_graph, port1, port2, &connection_id))
{
ladish_graph_remove_connection(virtualizer_ptr->studio_graph, connection_id);
}
else
{
log_error("ports %"PRIu64":%"PRIu64" and %"PRIu64":%"PRIu64" are not connected in the Studio graph", client1_id, port1_id, client2_id, port2_id);
}
}
#undef virtualizer_ptr
bool
ladish_virtualizer_create(
graph_proxy_handle jack_graph_proxy,
ladish_graph_handle jack_graph,
ladish_graph_handle studio_graph,
ladish_virtualizer_handle * handle_ptr)
{
struct virtualizer * virtualizer_ptr;
virtualizer_ptr = malloc(sizeof(struct virtualizer));
if (virtualizer_ptr == NULL)
{
log_error("malloc() failed for struct virtualizer");
return false;
}
virtualizer_ptr->jack_graph_proxy = jack_graph_proxy;
virtualizer_ptr->jack_graph = jack_graph;
virtualizer_ptr->studio_graph = studio_graph;
virtualizer_ptr->system_client_id = 0;
if (!graph_proxy_attach(
jack_graph_proxy,
virtualizer_ptr,
clear,
client_appeared,
client_disappeared,
port_appeared,
port_disappeared,
ports_connected,
ports_disconnected))
{
free(virtualizer_ptr);
return false;
}
ladish_graph_set_connection_handlers(studio_graph, virtualizer_ptr, ports_connect_request, ports_disconnect_request);
*handle_ptr = (ladish_virtualizer_handle)virtualizer_ptr;
return true;
}
#define virtualizer_ptr ((struct virtualizer *)handle)
void
ladish_virtualizer_destroy(
ladish_virtualizer_handle handle)
{
log_info("ladish_virtualizer_destroy() called");
graph_proxy_detach((graph_proxy_handle)handle, virtualizer_ptr);
}
#undef virtualizer_ptr
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