Jack2  1.9.9
JackGraphManager.h
1 /*
2 Copyright (C) 2001 Paul Davis
3 Copyright (C) 2004-2008 Grame
4 
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
9 
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
14 
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 
19 */
20 
21 #ifndef __JackGraphManager__
22 #define __JackGraphManager__
23 
24 #include "JackShmMem.h"
25 #include "JackPort.h"
26 #include "JackConstants.h"
27 #include "JackConnectionManager.h"
28 #include "JackAtomicState.h"
29 #include "JackPlatformPlug.h"
30 #include "JackSystemDeps.h"
31 
32 namespace Jack
33 {
34 
39 PRE_PACKED_STRUCTURE
40 class SERVER_EXPORT JackGraphManager : public JackShmMem, public JackAtomicState<JackConnectionManager>
41 {
42 
43  private:
44 
45  unsigned int fPortMax;
46  JackClientTiming fClientTiming[CLIENT_NUM];
47  JackPort fPortArray[0]; // The actual size depends of port_max, it will be dynamically computed and allocated using "placement" new
48 
49  void AssertPort(jack_port_id_t port_index);
50  jack_port_id_t AllocatePortAux(int refnum, const char* port_name, const char* port_type, JackPortFlags flags);
51  void GetConnectionsAux(JackConnectionManager* manager, const char** res, jack_port_id_t port_index);
52  void GetPortsAux(const char** matching_ports, const char* port_name_pattern, const char* type_name_pattern, unsigned long flags);
53  jack_default_audio_sample_t* GetBuffer(jack_port_id_t port_index);
54  void* GetBufferAux(JackConnectionManager* manager, jack_port_id_t port_index, jack_nframes_t frames);
55  jack_nframes_t ComputeTotalLatencyAux(jack_port_id_t port_index, jack_port_id_t src_port_index, JackConnectionManager* manager, int hop_count);
56  void RecalculateLatencyAux(jack_port_id_t port_index, jack_latency_callback_mode_t mode);
57 
58  public:
59 
60  JackGraphManager(int port_max);
62  {}
63 
64  void SetBufferSize(jack_nframes_t buffer_size);
65 
66  // Ports management
67  jack_port_id_t AllocatePort(int refnum, const char* port_name, const char* port_type, JackPortFlags flags, jack_nframes_t buffer_size);
68  int ReleasePort(int refnum, jack_port_id_t port_index);
69  void GetInputPorts(int refnum, jack_int_t* res);
70  void GetOutputPorts(int refnum, jack_int_t* res);
71  void RemoveAllPorts(int refnum);
72  void DisconnectAllPorts(int refnum);
73 
74  JackPort* GetPort(jack_port_id_t index);
75  jack_port_id_t GetPort(const char* name);
76 
77  int ComputeTotalLatency(jack_port_id_t port_index);
78  int ComputeTotalLatencies();
79  void RecalculateLatency(jack_port_id_t port_index, jack_latency_callback_mode_t mode);
80 
81  int RequestMonitor(jack_port_id_t port_index, bool onoff);
82 
83  // Connections management
84  int Connect(jack_port_id_t src_index, jack_port_id_t dst_index);
85  int Disconnect(jack_port_id_t src_index, jack_port_id_t dst_index);
86  int IsConnected(jack_port_id_t port_src, jack_port_id_t port_dst);
87 
88  // RT, client
89  int GetConnectionsNum(jack_port_id_t port_index)
90  {
91  JackConnectionManager* manager = ReadCurrentState();
92  return manager->Connections(port_index);
93  }
94 
95  const char** GetConnections(jack_port_id_t port_index);
96  void GetConnections(jack_port_id_t port_index, jack_int_t* connections); // TODO
97  const char** GetPorts(const char* port_name_pattern, const char* type_name_pattern, unsigned long flags);
98 
99  int GetTwoPorts(const char* src, const char* dst, jack_port_id_t* src_index, jack_port_id_t* dst_index);
100  int CheckPorts(jack_port_id_t port_src, jack_port_id_t port_dst);
101 
102  void DisconnectAllInput(jack_port_id_t port_index);
103  void DisconnectAllOutput(jack_port_id_t port_index);
104  int DisconnectAll(jack_port_id_t port_index);
105 
106  bool IsDirectConnection(int ref1, int ref2);
107  void DirectConnect(int ref1, int ref2);
108  void DirectDisconnect(int ref1, int ref2);
109 
110  void Activate(int refnum);
111  void Deactivate(int refnum);
112 
113  int GetInputRefNum(jack_port_id_t port_index);
114  int GetOutputRefNum(jack_port_id_t port_index);
115 
116  // Buffer management
117  void* GetBuffer(jack_port_id_t port_index, jack_nframes_t frames);
118 
119  // Activation management
120  void RunCurrentGraph();
121  bool RunNextGraph();
122  bool IsFinishedGraph();
123 
124  void InitRefNum(int refnum);
125  int ResumeRefNum(JackClientControl* control, JackSynchro* table);
126  int SuspendRefNum(JackClientControl* control, JackSynchro* table, long usecs);
127  void TopologicalSort(std::vector<jack_int_t>& sorted);
128 
129  JackClientTiming* GetClientTiming(int refnum)
130  {
131  return &fClientTiming[refnum];
132  }
133 
134  void Save(JackConnectionManager* dst);
135  void Restore(JackConnectionManager* src);
136 
137  static JackGraphManager* Allocate(int port_max);
138  static void Destroy(JackGraphManager* manager);
139 
140 } POST_PACKED_STRUCTURE;
141 
142 
143 } // end of namespace
144 
145 #endif
146 
Inter process synchronization using using Mach semaphore.
Base class for port.
Definition: JackPort.h:39
Graph manager: contains the connection manager and the port array.
A class to handle two states (switching from one to the other) in a lock-free manner.
For client timing measurements.
The base class for shared memory management.
Definition: JackShmMem.h:125
jack_int_t Connections(jack_port_id_t port_index) const
Get the connection number of a given port.
Client control possibly in shared memory.