Jack2 1.9.12

JackEngine.h
1 /*
2 Copyright (C) 2004-2008 Grame
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17
18 */
19
20 #ifndef __JackEngine__
21 #define __JackEngine__
22
23 #include "JackConstants.h"
24 #include "JackGraphManager.h"
25 #include "JackSynchro.h"
26 #include "JackMutex.h"
27 #include "JackTransportEngine.h"
28 #include "JackPlatformPlug.h"
29 #include "JackRequest.h"
30 #include "JackChannel.h"
31 #include <map>
32
33 namespace Jack
34 {
35
36 class JackClientInterface;
37 struct JackEngineControl;
38 class JackExternalClient;
39
44 class SERVER_EXPORT JackEngine : public JackLockAble
45 {
46 friend class JackLockedEngine;
47
48 private:
49
50 JackGraphManager* fGraphManager;
51 JackEngineControl* fEngineControl;
52 char fSelfConnectMode;
53 JackClientInterface* fClientTable[CLIENT_NUM];
54 JackSynchro* fSynchroTable;
55 JackServerNotifyChannel fChannel;
56 JackProcessSync fSignal;
57 jack_time_t fLastSwitchUsecs;
58
59 int fSessionPendingReplies;
60 detail::JackChannelTransactionInterface* fSessionTransaction;
61 JackSessionNotifyResult* fSessionResult;
62 std::map<int,std::string> fReservationMap;
63 int fMaxUUID;
64
65 int ClientCloseAux(int refnum, bool wait);
66 void CheckXRun(jack_time_t callback_usecs);
67
68 int NotifyAddClient(JackClientInterface* new_client, const char* new_name, int refnum);
69 void NotifyRemoveClient(const char* name, int refnum);
70
71 void ProcessNext(jack_time_t callback_usecs);
72 void ProcessCurrent(jack_time_t callback_usecs);
73
74 bool ClientCheckName(const char* name);
75 bool GenerateUniqueName(char* name);
76
77 int AllocateRefnum();
78 void ReleaseRefnum(int refnum);
79
80 int ClientNotify(JackClientInterface* client, int refnum, const char* name, int notify, int sync, const char* message, int value1, int value2);
81
82 void NotifyClient(int refnum, int event, int sync, const char* message, int value1, int value2);
83 void NotifyClients(int event, int sync, const char* message, int value1, int value2);
84
85 void NotifyPortRegistation(jack_port_id_t port_index, bool onoff);
86 void NotifyPortConnect(jack_port_id_t src, jack_port_id_t dst, bool onoff);
87 void NotifyPortRename(jack_port_id_t src, const char* old_name);
88 void NotifyActivate(int refnum);
89
90 int GetNewUUID();
91 void EnsureUUID(int uuid);
92
93 bool CheckClient(int refnum)
94 {
95 return (refnum >= 0 && refnum < CLIENT_NUM && fClientTable[refnum] != NULL);
96 }
97
98 int CheckPortsConnect(int refnum, jack_port_id_t src, jack_port_id_t dst);
99
100 public:
101
102 JackEngine(JackGraphManager* manager, JackSynchro* table, JackEngineControl* controler, char self_connect_mode);
103 ~JackEngine();
104
105 int Open();
106 int Close();
107
108 // Client management
109 int ClientCheck(const char* name, int uuid, char* name_res, int protocol, int options, int* status);
110
111 int ClientExternalOpen(const char* name, int pid, int uuid, int* ref, int* shared_engine, int* shared_client, int* shared_graph_manager);
112 int ClientInternalOpen(const char* name, int* ref, JackEngineControl** shared_engine, JackGraphManager** shared_manager, JackClientInterface* client, bool wait);
113
114 int ClientExternalClose(int refnum);
115 int ClientInternalClose(int refnum, bool wait);
116
117 int ClientActivate(int refnum, bool is_real_time);
118 int ClientDeactivate(int refnum);
119
120 void ClientKill(int refnum);
121
122 int GetClientPID(const char* name);
123 int GetClientRefNum(const char* name);
124
125 // Internal client management
126 int GetInternalClientName(int int_ref, char* name_res);
127 int InternalClientHandle(const char* client_name, int* status, int* int_ref);
128 int InternalClientUnload(int refnum, int* status);
129
130 // Port management
131 int PortRegister(int refnum, const char* name, const char *type, unsigned int flags, unsigned int buffer_size, jack_port_id_t* port);
132 int PortUnRegister(int refnum, jack_port_id_t port);
133
134 int PortConnect(int refnum, const char* src, const char* dst);
135 int PortDisconnect(int refnum, const char* src, const char* dst);
136
137 int PortConnect(int refnum, jack_port_id_t src, jack_port_id_t dst);
138 int PortDisconnect(int refnum, jack_port_id_t src, jack_port_id_t dst);
139
140 int PortRename(int refnum, jack_port_id_t port, const char* name);
141
142 int ComputeTotalLatencies();
143
144 // Graph
145 bool Process(jack_time_t cur_cycle_begin, jack_time_t prev_cycle_end);
146
147 // Notifications
148 void NotifyDriverXRun();
149 void NotifyClientXRun(int refnum);
150 void NotifyFailure(int code, const char* reason);
151 void NotifyGraphReorder();
152 void NotifyBufferSize(jack_nframes_t buffer_size);
153 void NotifySampleRate(jack_nframes_t sample_rate);
154 void NotifyFreewheel(bool onoff);
155 void NotifyQuit();
156
157 // Session management
158 void SessionNotify(int refnum, const char *target, jack_session_event_type_t type, const char *path, detail::JackChannelTransactionInterface *socket, JackSessionNotifyResult** result);
159 int SessionReply(int refnum);
160
161 int GetUUIDForClientName(const char *client_name, char *uuid_res);
162 int GetClientNameForUUID(const char *uuid, char *name_res);
163 int ReserveClientName(const char *name, const char *uuid);
164 int ClientHasSessionCallback(const char *name);
165 };
166
167
168 } // end of namespace
169
170 #endif
171
Jack::JackEngine
Engine description.
Definition: JackEngine.h:44
Jack::JackLockedEngine
Locked Engine, access to methods is serialized using a mutex.
Definition: JackLockedEngine.h:78
Jack::JackPosixProcessSync
A synchronization primitive built using a condition variable.
Definition: JackPosixProcessSync.h:35
Jack::JackPosixSemaphore
Inter process synchronization using POSIX semaphore.
Definition: JackPosixSemaphore.h:36
Jack::JackLockAble
Base class for "lockable" objects.
Definition: JackMutex.h:36
Jack::JackGraphManager
Graph manager: contains the connection manager and the port array.
Definition: JackGraphManager.h:40
Jack::JackSocketServerNotifyChannel
JackServerNotifyChannel using sockets.
Definition: JackSocketServerNotifyChannel.h:32
Jack::JackClientInterface
Client interface.
Definition: JackClientInterface.h:35
Jack::JackEngineControl
Engine control in shared memory.
Definition: JackEngineControl.h:49
Jack::detail::JackChannelTransactionInterface
Definition: JackChannel.h:38
Jack::JackSessionNotifyResult
Definition: JackRequest.h:1258