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ladish/daemon/virtualizer.c

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/* -*- Mode: C ; c-basic-offset: 2 -*- */
/*
* LADI Session Handler (ladish)
*
* Copyright (C) 2009,2010,2011,2012 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 "../proxies/a2j_proxy.h"
#include "../proxies/jmcore_proxy.h"
#include "procfs.h"
#include "app_supervisor.h"
#include "studio_internal.h"
#include "../common/catdup.h"
#include "room.h"
#include "studio.h"
#include "../alsapid/alsapid.h"
struct virtualizer
{
graph_proxy_handle jack_graph_proxy;
ladish_graph_handle jack_graph;
uint64_t system_client_id;
unsigned int our_clients_count;
};
/* 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);
struct app_find_context
{
pid_t pid;
ladish_graph_handle graph;
ladish_app_handle app;
};
#define app_find_context_ptr ((struct app_find_context *)context)
static bool lookup_app_in_supervisor(void * context, ladish_graph_handle graph, ladish_app_supervisor_handle app_supervisor)
{
pid_t pid;
ladish_app_handle app;
/* we stop iteration when app is found */
ASSERT(app_find_context_ptr->app == NULL && app_find_context_ptr->graph == NULL);
//log_info("checking app supervisor \"%s\" for pid %llu", ladish_app_supervisor_get_name(app_supervisor), (unsigned long long)pid);
pid = app_find_context_ptr->pid;
do
{
app = ladish_app_supervisor_find_app_by_pid(app_supervisor, pid);
if (app != NULL)
break;
pid = (pid_t)procfs_get_process_parent((unsigned long long)pid);
#if 0
if (pid != 0)
{
log_info("parent pid %llu", (unsigned long long)pid);
}
#endif
}
while (pid != 0);
if (app == NULL)
{ /* app not found in current supervisor */
return true; /* continue app supervisor iteration */
}
app_find_context_ptr->app = app;
app_find_context_ptr->graph = graph;
return false; /* stop app supervisor iteration */
}
#undef app_find_context_ptr
ladish_app_handle ladish_find_app_by_pid(pid_t pid, ladish_graph_handle * graph_ptr)
{
struct app_find_context context;
context.pid = pid;
context.app = NULL;
context.graph = NULL;
ladish_studio_iterate_virtual_graphs(&context, lookup_app_in_supervisor);
if (context.app == NULL)
{ /* app not found */
ASSERT(context.graph == NULL);
return NULL;
}
ASSERT(context.graph != NULL);
if (graph_ptr != NULL)
{
*graph_ptr = context.graph;
}
return context.app;
}
struct find_link_port_context
{
uuid_t uuid;
uint64_t jack_id;
ladish_port_handle port;
ladish_graph_handle graph;
};
#define find_link_port_context_ptr ((struct find_link_port_context *)context)
static
bool
find_link_port_vgraph_callback_by_uuid(
void * context,
ladish_graph_handle graph,
ladish_app_supervisor_handle UNUSED(app_supervisor))
{
ladish_port_handle port;
port = ladish_graph_find_port_by_uuid(graph, find_link_port_context_ptr->uuid, true, NULL);
if (port != NULL)
{
find_link_port_context_ptr->port = port;
find_link_port_context_ptr->graph = graph;
return false;
}
return true; /* continue vgraph iteration */
}
static
bool
find_link_port_vgraph_callback_by_jack_id(
void * context,
ladish_graph_handle graph,
ladish_app_supervisor_handle UNUSED(app_supervisor))
{
ladish_port_handle port;
bool room;
log_info("searching link port with jack id %"PRIu64" in graph %s", find_link_port_context_ptr->jack_id, ladish_graph_get_description(graph));
room = graph != g_studio.studio_graph;
port = ladish_graph_find_port_by_jack_id(graph, find_link_port_context_ptr->jack_id, room, !room);
if (port != NULL)
{
find_link_port_context_ptr->port = port;
find_link_port_context_ptr->graph = graph;
return false;
}
return true; /* continue vgraph iteration */
}
#undef find_link_port_context_ptr
static
ladish_graph_handle
find_link_port_vgraph_by_uuid(
struct virtualizer * UNUSED(virtualizer_ptr),
const char * port_name,
ladish_port_handle * port_ptr)
{
struct find_link_port_context context;
uuid_parse(port_name, context.uuid);
context.graph = NULL;
context.port = NULL;
ladish_studio_iterate_virtual_graphs(&context, find_link_port_vgraph_callback_by_uuid);
if (port_ptr != NULL && context.graph != NULL)
{
*port_ptr = context.port;
}
return context.graph;
}
static
ladish_graph_handle
find_link_port_vgraph_by_jack_id(
struct virtualizer * UNUSED(virtualizer_ptr),
uint64_t jack_id,
ladish_port_handle * port_ptr)
{
struct find_link_port_context context;
context.jack_id = jack_id;
context.graph = NULL;
context.port = NULL;
ladish_studio_iterate_virtual_graphs(&context, find_link_port_vgraph_callback_by_jack_id);
if (port_ptr != NULL && context.graph != NULL)
{
*port_ptr = context.port;
}
return context.graph;
}
static
bool
lookup_port(
struct virtualizer * virtualizer_ptr,
uint64_t port_id,
ladish_port_handle * port_ptr,
ladish_graph_handle * vgraph_ptr)
{
ladish_port_handle port;
ladish_graph_handle vgraph;
port = ladish_graph_find_port_by_jack_id(virtualizer_ptr->jack_graph, port_id, true, true);
if (port == NULL)
{
log_error("Unknown JACK port with id %"PRIu64" (dis)connected", port_id);
return false;
}
vgraph = ladish_port_get_vgraph(port);
if (vgraph == NULL)
{
vgraph = find_link_port_vgraph_by_jack_id(virtualizer_ptr, port_id, NULL);
if (vgraph == NULL)
{
log_error("Cannot find vgraph for (dis)connected jmcore port");
return false;
}
log_info("link port found in graph %s", ladish_graph_get_description(vgraph));
}
*port_ptr = port;
*vgraph_ptr = vgraph;
return true;
}
#define virtualizer_ptr ((struct virtualizer *)context)
static void clear(void * UNUSED(context))
{
log_info("clear");
}
static void client_appeared(void * context, uint64_t id, const char * jack_name)
{
ladish_client_handle client;
const char * a2j_name;
bool is_a2j;
ladish_app_handle app;
uuid_t app_uuid;
const char * name;
pid_t pid;
ladish_graph_handle graph;
bool jmcore;
log_info("client_appeared(%"PRIu64", %s)", id, jack_name);
a2j_name = a2j_proxy_get_jack_client_name_cached();
is_a2j = a2j_name != NULL && strcmp(a2j_name, jack_name) == 0;
name = jack_name;
app = NULL;
graph = NULL;
jmcore = false;
if (!graph_proxy_get_client_pid(virtualizer_ptr->jack_graph_proxy, id, &pid))
{
log_info("client %"PRIu64" pid is unknown", id);
}
else
{
log_info("client pid is %"PRId64, (int64_t)pid);
if (pid != 0) /* skip internal clients that will match the pending clients in the graph, both have zero pid */
{
jmcore = pid == jmcore_proxy_get_pid_cached();
if (jmcore)
{
log_info("jmcore client appeared");
}
else
{
app = ladish_find_app_by_pid(pid, &graph);
if (app != NULL)
{
ladish_app_get_uuid(app, app_uuid);
ASSERT(!uuid_is_null(app_uuid));
name = ladish_app_get_name(app);
log_info("app name is '%s'", name);
}
}
}
}
if (!jmcore)
{
if (is_a2j)
{
client = ladish_graph_find_client_by_uuid(virtualizer_ptr->jack_graph, g_a2j_uuid);
}
else
{
if (app != NULL)
{
client = ladish_graph_find_client_by_app(virtualizer_ptr->jack_graph, app_uuid);
if (client == NULL)
{
log_info("Lookup by app uuid failed, attempting lookup by name '%s'", name);
goto find_by_name;
}
}
else
{
find_by_name:
client = ladish_graph_find_client_by_name(virtualizer_ptr->jack_graph, name, true);
}
}
if (client != NULL)
{
log_info("found existing client");
if (ladish_client_get_jack_id(client) != 0)
{
log_error("Ignoring client with duplicate name '%s' ('%s')", name, jack_name);
goto exit;
}
ladish_client_set_jack_name(client, jack_name);
ladish_client_set_jack_id(client, id);
ladish_graph_show_client(virtualizer_ptr->jack_graph, client);
goto done;
}
}
if (!ladish_client_create(is_a2j ? g_a2j_uuid : NULL, &client))
{
log_error("ladish_client_create() failed. Ignoring client %"PRIu64" (%s)", id, jack_name);
goto exit;
}
ladish_client_set_jack_id(client, id);
ladish_client_set_jack_name(client, jack_name);
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);
goto exit;
}
done:
if (strcmp(jack_name, "system") == 0)
{
virtualizer_ptr->system_client_id = id;
}
if (app != NULL)
{
/* interlink client and app */
ladish_app_add_pid(app, pid);
ladish_client_set_pid(client, pid);
ladish_client_set_app(client, app_uuid);
ASSERT(graph);
ladish_client_set_vgraph(client, graph);
virtualizer_ptr->our_clients_count++;
}
else if (jmcore)
{
ladish_client_set_pid(client, pid);
ASSERT(ladish_client_get_vgraph(client) == NULL);
}
else
{
/* unknown and internal clients appear in the studio graph */
ladish_client_set_vgraph(client, g_studio.studio_graph);
}
exit:
return;
}
static void port_disappeared(void * context, uint64_t client_id, uint64_t port_id);
bool
force_port_disappear(
void * context,
ladish_graph_handle UNUSED(graph_handle),
bool hidden,
ladish_client_handle client_handle,
const char * client_name,
ladish_port_handle port_handle,
const char * port_name,
uint32_t UNUSED(port_type),
uint32_t UNUSED(port_flags))
{
uint64_t client_id;
uint64_t port_id;
if (hidden)
{
return true;
}
log_error("forcing disappear of port '%s':'%s'", client_name, port_name);
client_id = ladish_client_get_jack_id(client_handle);
port_id = ladish_port_get_jack_id(port_handle);
port_disappeared(context, client_id, port_id);
return true;
}
static void client_disappeared(void * context, uint64_t id)
{
ladish_client_handle client;
pid_t pid;
uuid_t app_uuid;
ladish_app_handle app;
ladish_graph_handle vgraph;
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;
}
log_info("client disappeared: '%s'", ladish_graph_get_client_name(virtualizer_ptr->jack_graph, client));
/* This is a workaround for jack2/jackdbus bug. */
ladish_graph_interate_client_ports(virtualizer_ptr->jack_graph, client, context, force_port_disappear);
vgraph = ladish_client_get_vgraph(client);
pid = ladish_client_get_pid(client);
if (ladish_client_get_app(client, app_uuid))
{
virtualizer_ptr->our_clients_count--;
app = ladish_studio_find_app_by_uuid(app_uuid);
if (app != NULL)
{
ladish_app_del_pid(app, pid);
}
else
{
log_error("app of disappearing client %"PRIu64" not found. pid is %"PRIu64, id, (uint64_t)pid);
ASSERT_NO_PASS;
}
}
if (id == virtualizer_ptr->system_client_id)
{
virtualizer_ptr->system_client_id = 0;
}
if (vgraph != NULL && ladish_graph_is_persist(vgraph)) /* 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);
ladish_client_destroy(client);
/* no need to clear vclient interlink because it either does not exist (vgraph is NULL) or
* it will be destroyed before it is accessed (persist flag is cleared on room deletion) */
}
}
static
void
port_appeared(
void * context,
uint64_t client_id,
uint64_t port_id,
const char * real_jack_port_name,
bool is_input,
bool is_terminal,
bool is_midi)
{
ladish_client_handle jack_client;
ladish_client_handle vclient;
ladish_port_handle port;
uint32_t type;
uint32_t flags;
const char * jack_client_name;
const char * vclient_name;
bool is_a2j;
uuid_t vclient_uuid;
pid_t pid;
ladish_app_handle app;
bool has_app;
uuid_t app_uuid;
char * alsa_client_name;
char * alsa_port_name;
char * a2j_fake_jack_port_name;
uint32_t alsa_client_id;
const char * jack_port_name;
const char * vport_name;
ladish_graph_handle vgraph;
log_info("port_appeared(%"PRIu64", %"PRIu64", %s (%s, %s))", client_id, port_id, real_jack_port_name, is_input ? "in" : "out", is_midi ? "midi" : "audio");
alsa_client_name = NULL;
alsa_port_name = NULL;
a2j_fake_jack_port_name = NULL;
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;
}
/********************/
/* gather info about the appeared port */
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 exit;
}
pid = ladish_client_get_pid(jack_client);
has_app = ladish_client_get_app(jack_client, app_uuid);
/* find the virtual graph that owns the app that owns the client that owns the appeared port */
vgraph = ladish_client_get_vgraph(jack_client);
if (vgraph == NULL)
{
vgraph = find_link_port_vgraph_by_uuid(virtualizer_ptr, real_jack_port_name, &port);
if (vgraph == NULL)
{
log_error("Cannot find vgraph for appeared jmcore port '%s'", real_jack_port_name);
goto exit;
}
/* jmcore port appeared */
log_info("jmcore port appeared in vgraph %s", ladish_graph_get_description(vgraph));
if (!ladish_graph_add_port(virtualizer_ptr->jack_graph, jack_client, port, real_jack_port_name, type, flags, false))
{
log_error("ladish_graph_add_port() failed.");
goto exit;
}
if (vgraph == g_studio.studio_graph)
{
ladish_port_set_jack_id(port, port_id);
}
else
{
ladish_port_set_jack_id_room(port, port_id);
}
vclient = ladish_graph_get_port_client(vgraph, port);
if (vclient == NULL)
{
log_error("link port client not found in vgraph %s", ladish_graph_get_description(vgraph));
ASSERT_NO_PASS;
goto exit;
}
ladish_graph_show_port(vgraph, port);
goto exit;
}
else
{
//log_info("Port of virtual graph '%s'", ladish_graph_get_description(vgraph));
}
jack_client_name = ladish_graph_get_client_name(virtualizer_ptr->jack_graph, jack_client);
is_a2j = ladish_virtualizer_is_a2j_client(jack_client);
if (is_a2j)
{
log_info("a2j port appeared");
if (!a2j_proxy_map_jack_port(real_jack_port_name, &alsa_client_name, &alsa_port_name, &alsa_client_id))
{
is_a2j = false;
alsa_client_name = catdup("FAILED ", jack_client_name);
if (alsa_client_name == NULL)
{
log_error("catdup failed to duplicate a2j jack client name after map failure");
goto exit;
}
alsa_port_name = strdup(real_jack_port_name);
if (alsa_port_name == NULL)
{
log_error("catdup failed to duplicate a2j jack port name after map failure");
free(alsa_client_name);
goto exit;
}
vclient_name = alsa_client_name;
}
else
{
log_info("a2j: '%s':'%s' (%"PRIu32")", alsa_client_name, alsa_port_name, alsa_client_id);
vclient_name = alsa_client_name;
if (alsapid_get_pid(alsa_client_id, &pid))
{
log_info("ALSA client pid is %lld", (long long)pid);
app = ladish_find_app_by_pid(pid, &vgraph);
if (app != NULL)
{
ladish_app_get_uuid(app, app_uuid);
ASSERT(!uuid_is_null(app_uuid));
vclient_name = ladish_app_get_name(app);
has_app = true;
log_info("ALSA app name is '%s'", vclient_name);
ladish_app_add_pid(app, pid);
}
}
else
{
log_error("UNKNOWN ALSA client pid");
}
}
a2j_fake_jack_port_name = catdup4(vclient_name, is_input ? " (playback)" : " (capture)", ": ", alsa_port_name);
if (a2j_fake_jack_port_name == NULL)
{
log_error("catdup4() failed");
goto free_alsa_names;
}
jack_port_name = a2j_fake_jack_port_name;
}
else
{
vclient_name = jack_client_name;
jack_port_name = real_jack_port_name;
}
/********************/
/* search (by name) the appeared port in jack graph
* if found - show it in both graphs.
* if not found - create new port and add it to the jack graph.
* Then process to adding it to virtual graph */
port = ladish_graph_find_port_by_name(virtualizer_ptr->jack_graph, jack_client, jack_port_name, vgraph);
if (port != NULL)
{
log_info("found existing port %p", port);
if (ladish_port_get_jack_id(port) != 0)
{
log_error("Ignoring duplicate JACK port '%s':'%s'", jack_client_name, jack_port_name);
goto free_alsa_names;
}
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);
vclient = ladish_graph_get_port_client(vgraph, port);
if (vclient == NULL)
{
log_error("JACK port not found in virtual graph '%s'", ladish_graph_get_description(vgraph));
ladish_graph_dump(g_studio.jack_graph);
ladish_graph_dump(vgraph);
ASSERT_NO_PASS;
goto free_alsa_names;
}
/* for normal ports, one can find the app_uuid through the jack client,
but for a2j ports the jack client is shared between graphs */
/* clients and ports can be reused if they were started externally then through ladish */
if (has_app)
{
ladish_port_set_app(port, app_uuid);
ladish_port_set_pid(port, pid);
if (!ladish_client_has_app(vclient))
{
ladish_client_set_app(vclient, app_uuid);
}
}
ladish_dict_set(ladish_port_get_dict(port), URI_A2J_PORT, is_a2j ? "yes" : "no");
ladish_client_set_jack_id(vclient, client_id);
ladish_graph_adjust_port(vgraph, port, type, flags);
ladish_graph_show_port(vgraph, port);
goto free_alsa_names;
}
if (!ladish_port_create(NULL, false, &port))
{
log_error("ladish_port_create() failed.");
goto free_alsa_names;
}
/* set port jack id so invisible connections to/from it can be restored */
ladish_port_set_jack_id(port, port_id);
/* for normal ports, one can find the vgraph and app_uuid through the jack client,
but for a2j ports the jack client is shared between graphs */
ladish_port_set_vgraph(port, vgraph);
if (has_app)
{
ladish_port_set_app(port, app_uuid);
ladish_port_set_pid(port, pid);
}
ladish_dict_set(ladish_port_get_dict(port), URI_A2J_PORT, is_a2j ? "yes" : "no");
if (!ladish_graph_add_port(virtualizer_ptr->jack_graph, jack_client, port, jack_port_name, type, flags, false))
{
log_error("ladish_graph_add_port() failed.");
ladish_port_destroy(port);
goto free_alsa_names;
}
/********************/
/* find/create the virtual client where port will be added */
if (is_a2j)
{
vclient = ladish_graph_find_client_by_name(vgraph, vclient_name, false);
if (vclient == NULL)
{
if (!ladish_client_create(NULL, &vclient))
{
log_error("ladish_client_create() failed.");
goto free_alsa_names;
}
if (has_app)
{
ladish_client_set_app(vclient, app_uuid);
}
if (!ladish_graph_add_client(vgraph, vclient, vclient_name, false))
{
log_error("ladish_graph_add_client() failed.");
ladish_client_destroy(vclient);
goto free_alsa_names;
}
}
}
else if (client_id == virtualizer_ptr->system_client_id)
{
log_info("system client port appeared");
if (!is_input)
{ /* output capture port */
vclient = ladish_graph_find_client_by_uuid(vgraph, g_system_capture_uuid);
if (vclient == NULL)
{
if (!ladish_client_create(g_system_capture_uuid, &vclient))
{
log_error("ladish_client_create() failed.");
goto free_alsa_names;
}
if (!ladish_graph_add_client(vgraph, vclient, "Hardware Capture", false))
{
log_error("ladish_graph_add_client() failed.");
ladish_client_destroy(vclient);
goto free_alsa_names;
}
}
}
else
{ /* input playback port */
vclient = ladish_graph_find_client_by_uuid(vgraph, g_system_playback_uuid);
if (vclient == NULL)
{
if (!ladish_client_create(g_system_playback_uuid, &vclient))
{
log_error("ladish_client_create() failed.");
goto free_alsa_names;
}
if (!ladish_graph_add_client(vgraph, vclient, "Hardware Playback", false))
{
ladish_client_destroy(vclient);
goto free_alsa_names;
}
}
}
}
else
{ /* non-system client */
log_info("non-system client port appeared");
if (ladish_client_get_interlink(jack_client, vclient_uuid))
{
vclient = ladish_graph_find_client_by_uuid(vgraph, vclient_uuid);
ASSERT(vclient != NULL);
}
else
{
if (has_app)
{
vclient = ladish_graph_find_client_by_app(vgraph, app_uuid);
if (vclient == NULL)
{
log_info("Lookup by app uuid failed, attempting lookup by name '%s'", vclient_name);
goto find_by_name;
}
}
else
{
find_by_name:
vclient = ladish_graph_find_client_by_name(vgraph, vclient_name, true);
}
if (vclient == NULL)
{
log_info("creating new vclient");
if (!ladish_client_create(NULL, &vclient))
{
log_error("ladish_client_create() failed.");
goto free_alsa_names;
}
ladish_client_interlink(vclient, jack_client);
if (has_app)
{
ladish_client_set_app(vclient, app_uuid);
}
if (!ladish_graph_add_client(vgraph, vclient, vclient_name, false))
{
log_error("ladish_graph_add_client() failed to add client '%s' to virtual graph", jack_client_name);
ladish_client_destroy(vclient);
goto free_alsa_names;
}
}
else
{
/* vclient exists but is not interlinked with vclient */
/* this can happen when client is created because of a2j port appear */
ladish_client_interlink(vclient, jack_client);
}
}
}
/********************/
/* add newly appeared port to the virtual graph */
if (is_a2j)
{
vport_name = alsa_port_name;
}
else
{
vport_name = jack_port_name;
}
if (!ladish_graph_add_port(vgraph, vclient, port, vport_name, type, flags, false))
{
log_error("ladish_graph_add_port() failed.");
goto free_alsa_names;
}
free_alsa_names:
free(a2j_fake_jack_port_name);
free(alsa_client_name);
free(alsa_port_name);
exit:
return;
}
static void maybe_clear_a2j_port_pid(ladish_graph_handle vgraph, ladish_client_handle jclient, ladish_port_handle port)
{
const char * opath;
uuid_t app_uuid;
ladish_app_handle app;
ladish_app_supervisor_handle app_supervisor;
pid_t pid;
if (ladish_virtualizer_is_a2j_client(jclient) && ladish_port_get_app(port, app_uuid))
{
pid = ladish_port_get_pid(port);
opath = ladish_graph_get_opath(vgraph);
log_info("releasing reference for pid %d of a2j port in %s", (int)pid, ladish_graph_get_description(vgraph));
app_supervisor = ladish_studio_find_app_supervisor(opath);
app = ladish_app_supervisor_find_app_by_uuid(app_supervisor, app_uuid);
if (app != NULL && pid != 0)
{
ladish_app_del_pid(app, pid);
}
}
}
static void port_disappeared(void * context, uint64_t client_id, uint64_t port_id)
{
ladish_client_handle jclient;
ladish_client_handle vclient;
ladish_port_handle port;
ladish_graph_handle vgraph;
bool jmcore;
log_info("port_disappeared(%"PRIu64", %"PRIu64")", client_id, port_id);
jclient = ladish_graph_find_client_by_jack_id(virtualizer_ptr->jack_graph, client_id);
if (jclient == 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, true, true);
if (port == NULL)
{
log_error("Unknown JACK port with id %"PRIu64" disappeared", port_id);
return;
}
/* find the virtual graph that owns the app that owns the client that owns the disappeared port */
jmcore = false;
vgraph = ladish_port_get_vgraph(port);
if (vgraph == NULL)
{
vgraph = find_link_port_vgraph_by_uuid(virtualizer_ptr, ladish_graph_get_port_name(virtualizer_ptr->jack_graph, port), NULL);
if (vgraph == NULL)
{
log_error("Cannot find vgraph for disappeared jmcore port");
ASSERT_NO_PASS;
return;
}
jmcore = true;
ladish_graph_remove_port_by_jack_id(virtualizer_ptr->jack_graph, port_id, true, true);
}
else
{
maybe_clear_a2j_port_pid(vgraph, jclient, port);
}
ladish_port_set_pid(port, 0);
if (ladish_graph_is_persist(vgraph)) /* if port is supposed to be persisted */
{
if (!jmcore)
{
ladish_port_set_jack_id(port, 0);
ladish_graph_hide_port(virtualizer_ptr->jack_graph, port);
}
if (vgraph != NULL)
{
ladish_graph_hide_port(vgraph, port);
vclient = ladish_graph_get_port_client(vgraph, port);
if (ladish_graph_client_looks_empty(vgraph, vclient))
{
ladish_graph_hide_client(vgraph, vclient);
}
}
}
else
{
if (!jmcore)
{
ladish_graph_remove_port(virtualizer_ptr->jack_graph, port);
}
if (vgraph != NULL)
{
vclient = ladish_graph_remove_port(vgraph, port);
if (vclient != NULL)
{
if (ladish_graph_client_is_empty(vgraph, vclient))
{
ladish_graph_remove_client(vgraph, vclient);
ladish_client_clear_interlink(jclient);
}
}
}
}
}
static
void
port_renamed(
void * context,
uint64_t client_id,
uint64_t port_id,
const char * old_port_name,
const char * new_port_name)
{
ladish_port_handle port;
ladish_graph_handle vgraph;
log_info("port_renamed(%"PRIu64":%"PRIu64", '%s', '%s')", client_id, port_id, old_port_name, new_port_name);
port = ladish_graph_find_port_by_jack_id(virtualizer_ptr->jack_graph, port_id, true, true);
if (port == NULL)
{
log_error("Unknown JACK port with id %"PRIu64" was renamed", port_id);
return;
}
/* find the virtual graph that owns the app that owns the client that owns the renamed port */
vgraph = ladish_port_get_vgraph(port);
if (!ladish_graph_rename_port(virtualizer_ptr->jack_graph, port, new_port_name))
{
log_error("renaming of port in jack graph failed");
}
if (!ladish_graph_rename_port(vgraph, port, new_port_name))
{
log_error("renaming of port in virtual graph failed");
}
}
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(ladish_graph_get_opath(graph_handle)); /* studio or room virtual graph */
log_info("virtualizer: ports connect request");
if (graph_handle == g_studio.studio_graph)
{
port1_id = ladish_port_get_jack_id(port1);
port2_id = ladish_port_get_jack_id(port2);
}
else
{
port1_id = ladish_port_get_jack_id_room(port1);
port2_id = ladish_port_get_jack_id_room(port2);
}
return graph_proxy_connect_ports(virtualizer_ptr->jack_graph_proxy, port1_id, port2_id);
}
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;
ASSERT(ladish_graph_get_opath(graph_handle)); /* studio or room virtual graph */
log_info("virtualizer: ports disconnect request");
if (!ladish_graph_get_connection_ports(graph_handle, connection_id, &port1, &port2))
{
log_error("cannot find ports that are disconnect-requested");
ASSERT_NO_PASS;
return false;
}
if (graph_handle == g_studio.studio_graph)
{
port1_id = ladish_port_get_jack_id(port1);
port2_id = ladish_port_get_jack_id(port2);
}
else
{
port1_id = ladish_port_get_jack_id_room(port1);
port2_id = ladish_port_get_jack_id_room(port2);
}
return graph_proxy_disconnect_ports(virtualizer_ptr->jack_graph_proxy, port1_id, port2_id);
}
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;
ladish_graph_handle vgraph1;
ladish_graph_handle vgraph2;
log_info("ports_connected %"PRIu64":%"PRIu64" %"PRIu64":%"PRIu64"", client1_id, port1_id, client2_id, port2_id);
if (!lookup_port(virtualizer_ptr, port1_id, &port1, &vgraph1))
{
return;
}
if (!lookup_port(virtualizer_ptr, port2_id, &port2, &vgraph2))
{
return;
}
if (vgraph1 != vgraph2)
{
/* TODO */
log_error("ignoring connection with endpoints in different vgraphs");
return;
}
ladish_graph_add_connection(virtualizer_ptr->jack_graph, port1, port2, false);
if (ladish_graph_find_connection(vgraph1, port1, port2, &connection_id))
{
log_info("showing hidden virtual connection");
ladish_graph_show_connection(vgraph1, connection_id);
}
else
{
log_info("creating new virtual connection");
ladish_graph_add_connection(vgraph1, 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;
ladish_graph_handle vgraph1;
ladish_graph_handle vgraph2;
log_info("ports_disconnected %"PRIu64":%"PRIu64" %"PRIu64":%"PRIu64"", client1_id, port1_id, client2_id, port2_id);
if (!lookup_port(virtualizer_ptr, port1_id, &port1, &vgraph1))
{
return;
}
if (!lookup_port(virtualizer_ptr, port2_id, &port2, &vgraph2))
{
return;
}
if (vgraph1 != vgraph2)
{
/* TODO */
log_error("ignoring connection with endpoints in different vgraphs");
return;
}
if (ladish_graph_find_connection(virtualizer_ptr->jack_graph, port1, port2, &connection_id))
{
ladish_graph_remove_connection(virtualizer_ptr->jack_graph, connection_id, true);
}
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(vgraph1, port1, port2, &connection_id))
{
ladish_graph_remove_connection(vgraph1, connection_id, false);
}
else
{
log_error("ports %"PRIu64":%"PRIu64" and %"PRIu64":%"PRIu64" are not connected in the virtual 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_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->system_client_id = 0;
virtualizer_ptr->our_clients_count = 0;
if (!graph_proxy_attach(
jack_graph_proxy,
virtualizer_ptr,
clear,
client_appeared,
NULL, /* jackdbus does not have client rename functionality (yet) */
client_disappeared,
port_appeared,
port_renamed,
port_disappeared,
ports_connected,
ports_disconnected))
{
free(virtualizer_ptr);
return false;
}
*handle_ptr = (ladish_virtualizer_handle)virtualizer_ptr;
return true;
}
#define virtualizer_ptr ((struct virtualizer *)handle)
void
ladish_virtualizer_set_graph_connection_handlers(
ladish_virtualizer_handle handle,
ladish_graph_handle graph)
{
ladish_graph_set_connection_handlers(graph, virtualizer_ptr, ports_connect_request, ports_disconnect_request);
}
unsigned int
ladish_virtualizer_get_our_clients_count(
ladish_virtualizer_handle handle)
{
return virtualizer_ptr->our_clients_count;
}
static bool app_has_a2j_ports(ladish_graph_handle jack_graph, const uuid_t app_uuid)
{
ladish_client_handle a2jclient;
a2jclient = ladish_graph_find_client_by_uuid(jack_graph, g_a2j_uuid);
if (a2jclient == NULL)
{
return false;
}
return ladish_graph_client_has_visible_app_port(jack_graph, a2jclient, app_uuid);
}
bool
ladish_virtualizer_is_hidden_app(
ladish_graph_handle jack_graph,
const uuid_t app_uuid,
const char * app_name)
{
ladish_client_handle jclient;
ladish_graph_handle vgraph;
uuid_t vclient_uuid;
ladish_client_handle vclient;
//ladish_graph_dump(g_studio.jack_graph);
if (app_has_a2j_ports(jack_graph, app_uuid))
{
log_info("app '%s' still has a2j ports", app_name);
return false;
}
jclient = ladish_graph_find_client_by_app(jack_graph, app_uuid);
if (jclient == NULL)
{
log_info("App without JACK client is treated as hidden one");
return true;
}
ASSERT(!ladish_virtualizer_is_a2j_client(jclient)); /* a2j client has no app associated */
vgraph = ladish_client_get_vgraph(jclient);
if (vgraph == NULL)
{
ASSERT_NO_PASS;
return true;
}
//ladish_graph_dump(vgraph);
if (!ladish_graph_client_looks_empty(jack_graph, jclient) ||
!ladish_graph_client_is_hidden(jack_graph, jclient))
{
return false;
}
if (!ladish_client_get_interlink(jclient, vclient_uuid))
{
if (ladish_graph_client_is_empty(jack_graph, jclient))
{
log_info("jack client of app '%s' has no interlinked vgraph client and no ports", app_name);
}
else
{
log_error("jack client of app '%s' has no interlinked vgraph client", app_name);
ASSERT_NO_PASS;
}
return true;
}
vclient = ladish_graph_find_client_by_uuid(vgraph, vclient_uuid);
if (vclient == NULL)
{
ASSERT_NO_PASS;
return true;
}
if (!ladish_graph_client_looks_empty(vgraph, vclient))
{
return false;
}
ASSERT(ladish_graph_client_is_hidden(vgraph, vclient)); /* vclients are automatically hidden when they start looking empty (on port disappear) */
return true;
}
struct app_remove_context
{
uuid_t app_uuid;
const char * app_name;
};
#define app_info_ptr ((struct app_remove_context *)context)
static
bool
remove_app_port(
void * context,
ladish_graph_handle graph_handle,
bool UNUSED(hidden),
void * UNUSED(client_iteration_context_ptr),
ladish_client_handle UNUSED(client_handle),
const char * client_name,
ladish_port_handle port_handle,
const char * port_name,
uint32_t port_type,
uint32_t port_flags)
{
ladish_graph_handle vgraph;
ladish_client_handle vclient;
if (!ladish_port_belongs_to_app(port_handle, app_info_ptr->app_uuid))
{
return true;
}
//log_info("removing port '%s':'%s' (JACK) of app '%s'", client_name, port_name, app_info_ptr->app_name);
vgraph = ladish_port_get_vgraph(port_handle);
if (vgraph == NULL)
{
log_error("port '%s':'%s' of app '%s' has no vgraph", client_name, port_name, app_info_ptr->app_name);
ASSERT_NO_PASS;
return true;
}
vclient = ladish_graph_get_port_client(vgraph, port_handle);
if (vgraph == NULL)
{
log_error("app port '%s':'%s' not found in vgraph '%s'", client_name, port_name, ladish_graph_get_description(vgraph));
ASSERT_NO_PASS;
return true;
}
log_info(
"removing %s %s port %p of app '%s' ('%s':'%s' in %s)",
port_type == JACKDBUS_PORT_TYPE_AUDIO ? "audio" : "midi",
JACKDBUS_PORT_IS_INPUT(port_flags) ? "input" : "output",
port_handle,
app_info_ptr->app_name,
ladish_graph_get_client_name(vgraph, vclient),
ladish_graph_get_port_name(vgraph, port_handle),
ladish_graph_get_description(vgraph));
ladish_graph_remove_port(graph_handle, port_handle);
ladish_graph_remove_port(vgraph, port_handle);
return true;
}
#undef app_info_ptr
void
ladish_virtualizer_remove_app(
ladish_graph_handle jack_graph,
const uuid_t app_uuid,
const char * app_name)
{
ladish_client_handle jclient;
ladish_graph_handle vgraph;
uuid_t vclient_uuid;
ladish_client_handle vclient;
bool is_empty;
struct app_remove_context ctx;
//ladish_graph_dump(g_studio.jack_graph);
uuid_copy(ctx.app_uuid, app_uuid);
ctx.app_name = app_name;
ladish_graph_iterate_nodes(jack_graph, &ctx, NULL, remove_app_port, NULL);
jclient = ladish_graph_find_client_by_app(jack_graph, app_uuid);
if (jclient == NULL)
{
log_info("removing app without JACK client");
return;
}
ASSERT(!ladish_virtualizer_is_a2j_client(jclient)); /* a2j client has no app associated */
vgraph = ladish_client_get_vgraph(jclient);
if (vgraph == NULL)
{
ASSERT_NO_PASS;
return;
}
//ladish_graph_dump(vgraph);
/* check whether the client is empty because this cannot
be checked later because the client was removed
(see where is_empty is used) */
is_empty = ladish_graph_client_is_empty(jack_graph, jclient);
ladish_graph_remove_client(jack_graph, jclient);
if (!ladish_client_get_interlink(jclient, vclient_uuid))
{
if (is_empty)
{
/* jack client without ports and thus without vgraph client */
return;
}
log_error("jack client of app '%s' has no interlinked vgraph client", app_name);
ladish_graph_dump(g_studio.jack_graph);
ladish_graph_dump(vgraph);
ASSERT_NO_PASS;
return;
}
vclient = ladish_graph_find_client_by_uuid(vgraph, vclient_uuid);
if (vclient == NULL)
{
ASSERT_NO_PASS;
return;
}
ladish_graph_remove_client(vgraph, vclient);
ladish_graph_dump(g_studio.jack_graph);
ladish_graph_dump(vgraph);
}
void
ladish_virtualizer_destroy(
ladish_virtualizer_handle handle)
{
log_info("ladish_virtualizer_destroy() called");
graph_proxy_detach((graph_proxy_handle)handle, virtualizer_ptr);
free(virtualizer_ptr);
}
#undef virtualizer_ptr
#define vgraph ((ladish_graph_handle)vgraph_context)
void
ladish_virtualizer_rename_app(
void * vgraph_context,
const uuid_t uuid,
const char * UNUSED(old_name),
const char * new_app_name)
{
ladish_client_handle client;
client = ladish_graph_find_client_by_app(vgraph, uuid);
if (client != NULL)
{
ladish_graph_rename_client(vgraph, client, new_app_name);
}
client = ladish_graph_find_client_by_app(g_studio.jack_graph, uuid);
if (client != NULL)
{
ladish_graph_rename_client(g_studio.jack_graph, client, new_app_name);
}
}
#undef vgraph
bool
ladish_virtualizer_is_system_client(
uuid_t uuid)
{
if (uuid_compare(uuid, g_system_capture_uuid) == 0)
{
return true;
}
if (uuid_compare(uuid, g_system_playback_uuid) == 0)
{
return true;
}
return false;
}
bool ladish_virtualizer_is_a2j_client(ladish_client_handle jclient)
{
uuid_t jclient_uuid;
ladish_client_get_uuid(jclient, jclient_uuid);
return uuid_compare(jclient_uuid, g_a2j_uuid) == 0;
}
static
bool
move_capture_port_callback(
void * context,
ladish_graph_handle graph_handle,
bool UNUSED(hidden),
ladish_client_handle client_handle,
const char * UNUSED(client_name),
ladish_port_handle port_handle,
const char * UNUSED(port_name),
uint32_t UNUSED(port_type),
uint32_t port_flags)
{
ASSERT(client_handle != context); /* source and destination clients must be differ */
if (JACKDBUS_PORT_IS_INPUT(port_flags))
{
ladish_graph_move_port(graph_handle, port_handle, context);
}
return true;
}
bool ladish_virtualizer_split_client(ladish_graph_handle vgraph, uint64_t client_id)
{
ladish_client_handle vclient1;
ladish_client_handle vclient2;
const char * name;
vclient1 = ladish_graph_find_client_by_id(vgraph, client_id);
if (vclient1 == NULL)
{
log_error("Cannot find client %"PRIu64" in %s", client_id, ladish_graph_get_description(vgraph));
return false;
}
name = ladish_graph_get_client_name(vgraph, vclient1);
if (!ladish_client_create(NULL, &vclient2))
{
log_error("ladish_client_create() failed.");
return false;
}
ladish_client_interlink_copy(vclient2, vclient1);
ladish_client_copy_app(vclient2, vclient1);
if (!ladish_graph_add_client(vgraph, vclient2, name, false))
{
log_error("ladish_graph_add_client() failed to add client '%s' to virtual graph", name);
ladish_client_destroy(vclient2);
return false;
}
return ladish_graph_interate_client_ports(vgraph, vclient1, vclient2, move_capture_port_callback);
}
static
bool
move_port_callback(
void * context,
ladish_graph_handle graph_handle,
bool UNUSED(hidden),
ladish_client_handle client_handle,
const char * UNUSED(client_name),
ladish_port_handle port_handle,
const char * UNUSED(port_name),
uint32_t UNUSED(port_type),
uint32_t UNUSED(port_flags))
{
ASSERT(client_handle != context); /* source and destination clients must be differ */
ladish_graph_move_port(graph_handle, port_handle, context);
return true;
}
bool
ladish_virtualizer_join_clients(
ladish_graph_handle vgraph,
uint64_t client1_id,
uint64_t client2_id)
{
ladish_client_handle vclient1;
ladish_client_handle vclient2;
if (client1_id == client2_id)
{
log_error("Cannot join same client");
return false;
}
vclient1 = ladish_graph_find_client_by_id(vgraph, client1_id);
if (vclient1 == NULL)
{
log_error("Cannot find client %"PRIu64" in %s", client1_id, ladish_graph_get_description(vgraph));
return false;
}
vclient2 = ladish_graph_find_client_by_id(vgraph, client2_id);
if (vclient2 == NULL)
{
log_error("Cannot find client %"PRIu64" in %s", client2_id, ladish_graph_get_description(vgraph));
return false;
}
ladish_graph_interate_client_ports(vgraph, vclient2, vclient1, move_port_callback);
ladish_graph_remove_client(vgraph, vclient2);
return true;
}
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