Jack2 1.9.6
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00001 /* 00002 Copyright (C) 2009 Grame. 00003 00004 This program is free software; you can redistribute it and/or modify 00005 it under the terms of the GNU General Public License as published by 00006 the Free Software Foundation; either version 2 of the License, or 00007 This program is distributed in the hope that it will be useful, 00008 but WITHOUT ANY WARRANTY; without even the implied warranty of 00009 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00010 (at your option) any later version. 00011 00012 GNU General Public License for more details. 00013 00014 You should have received a copy of the GNU General Public License 00015 along with this program; if not, write to the Free Software 00016 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00017 00018 */ 00019 00020 #include "JackSystemDeps.h" 00021 #include "JackMidiDriver.h" 00022 #include "JackTime.h" 00023 #include "JackError.h" 00024 #include "JackEngineControl.h" 00025 #include "JackPort.h" 00026 #include "JackGraphManager.h" 00027 #include "JackException.h" 00028 #include <assert.h> 00029 00030 namespace Jack 00031 { 00032 00033 JackMidiDriver::JackMidiDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table) 00034 : JackDriver(name, alias, engine, table), 00035 fCaptureChannels(0), 00036 fPlaybackChannels(0) 00037 { 00038 for (int i = 0; i < DRIVER_PORT_NUM; i++) { 00039 fRingBuffer[i] = NULL; 00040 } 00041 } 00042 00043 JackMidiDriver::~JackMidiDriver() 00044 { 00045 for (int i = 0; i < fCaptureChannels; i++) { 00046 if (fRingBuffer[i]) 00047 jack_ringbuffer_free(fRingBuffer[i]); 00048 } 00049 } 00050 00051 int JackMidiDriver::Open(bool capturing, 00052 bool playing, 00053 int inchannels, 00054 int outchannels, 00055 bool monitor, 00056 const char* capture_driver_name, 00057 const char* playback_driver_name, 00058 jack_nframes_t capture_latency, 00059 jack_nframes_t playback_latency) 00060 { 00061 fCaptureChannels = inchannels; 00062 fPlaybackChannels = outchannels; 00063 00064 for (int i = 0; i < fCaptureChannels; i++) { 00065 fRingBuffer[i] = jack_ringbuffer_create(sizeof(float) * BUFFER_SIZE_MAX); 00066 } 00067 00068 return JackDriver::Open(capturing, playing, inchannels, outchannels, monitor, capture_driver_name, playback_driver_name, capture_latency, playback_latency); 00069 } 00070 00071 int JackMidiDriver::Attach() 00072 { 00073 JackPort* port; 00074 jack_port_id_t port_index; 00075 char name[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE]; 00076 char alias[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE]; 00077 int i; 00078 00079 jack_log("JackMidiDriver::Attach fBufferSize = %ld fSampleRate = %ld", fEngineControl->fBufferSize, fEngineControl->fSampleRate); 00080 00081 for (i = 0; i < fCaptureChannels; i++) { 00082 snprintf(alias, sizeof(alias) - 1, "%s:%s:out%d", fAliasName, fCaptureDriverName, i + 1); 00083 snprintf(name, sizeof(name) - 1, "%s:capture_%d", fClientControl.fName, i + 1); 00084 if ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE, CaptureDriverFlags, fEngineControl->fBufferSize)) == NO_PORT) { 00085 jack_error("driver: cannot register port for %s", name); 00086 return -1; 00087 } 00088 port = fGraphManager->GetPort(port_index); 00089 port->SetAlias(alias); 00090 fCapturePortList[i] = port_index; 00091 jack_log("JackMidiDriver::Attach fCapturePortList[i] port_index = %ld", port_index); 00092 } 00093 00094 for (i = 0; i < fPlaybackChannels; i++) { 00095 snprintf(alias, sizeof(alias) - 1, "%s:%s:in%d", fAliasName, fPlaybackDriverName, i + 1); 00096 snprintf(name, sizeof(name) - 1, "%s:playback_%d", fClientControl.fName, i + 1); 00097 if ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE, PlaybackDriverFlags, fEngineControl->fBufferSize)) == NO_PORT) { 00098 jack_error("driver: cannot register port for %s", name); 00099 return -1; 00100 } 00101 port = fGraphManager->GetPort(port_index); 00102 port->SetAlias(alias); 00103 fPlaybackPortList[i] = port_index; 00104 jack_log("JackMidiDriver::Attach fPlaybackPortList[i] port_index = %ld", port_index); 00105 } 00106 00107 return 0; 00108 } 00109 00110 int JackMidiDriver::Detach() 00111 { 00112 int i; 00113 jack_log("JackMidiDriver::Detach"); 00114 00115 for (i = 0; i < fCaptureChannels; i++) { 00116 fGraphManager->ReleasePort(fClientControl.fRefNum, fCapturePortList[i]); 00117 } 00118 00119 for (i = 0; i < fPlaybackChannels; i++) { 00120 fGraphManager->ReleasePort(fClientControl.fRefNum, fPlaybackPortList[i]); 00121 } 00122 00123 return 0; 00124 } 00125 00126 int JackMidiDriver::Read() 00127 { 00128 return 0; 00129 } 00130 00131 int JackMidiDriver::Write() 00132 { 00133 return 0; 00134 } 00135 00136 int JackMidiDriver::ProcessNull() 00137 { 00138 return 0; 00139 } 00140 00141 int JackMidiDriver::Process() 00142 { 00143 // Read input buffers for the current cycle 00144 if (Read() < 0) { 00145 jack_error("JackMidiDriver::Process: read error, skip cycle"); 00146 return 0; // Skip cycle, but continue processing... 00147 } 00148 00149 fGraphManager->ResumeRefNum(&fClientControl, fSynchroTable); 00150 if (fEngineControl->fSyncMode) { 00151 if (fGraphManager->SuspendRefNum(&fClientControl, fSynchroTable, fEngineControl->fTimeOutUsecs) < 0) { 00152 jack_error("JackFreewheelDriver::ProcessSync SuspendRefNum error"); 00153 return -1; 00154 } 00155 } 00156 00157 // Write output buffers for the current cycle 00158 if (Write() < 0) { 00159 jack_error("JackMidiDriver::Process: write error, skip cycle"); 00160 return 0; // Skip cycle, but continue processing... 00161 } 00162 00163 return 0; 00164 } 00165 00166 JackMidiBuffer* JackMidiDriver::GetInputBuffer(int port_index) 00167 { 00168 assert(fCapturePortList[port_index]); 00169 return (JackMidiBuffer*)fGraphManager->GetBuffer(fCapturePortList[port_index], fEngineControl->fBufferSize); 00170 } 00171 00172 JackMidiBuffer* JackMidiDriver::GetOutputBuffer(int port_index) 00173 { 00174 assert(fPlaybackPortList[port_index]); 00175 return (JackMidiBuffer*)fGraphManager->GetBuffer(fPlaybackPortList[port_index], fEngineControl->fBufferSize); 00176 } 00177 00178 } // end of namespace