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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 using namespace std;
00031
00032 namespace Jack
00033 {
00034
00035 JackMidiDriver::JackMidiDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
00036 : JackDriver(name, alias, engine, table)
00037 {}
00038
00039 JackMidiDriver::~JackMidiDriver()
00040 {}
00041
00042 int JackMidiDriver::Open(bool capturing,
00043 bool playing,
00044 int inchannels,
00045 int outchannels,
00046 bool monitor,
00047 const char* capture_driver_name,
00048 const char* playback_driver_name,
00049 jack_nframes_t capture_latency,
00050 jack_nframes_t playback_latency)
00051 {
00052 fCaptureChannels = inchannels;
00053 fPlaybackChannels = outchannels;
00054 return JackDriver::Open(capturing, playing, inchannels, outchannels, monitor, capture_driver_name, playback_driver_name, capture_latency, playback_latency);
00055 }
00056
00057 int JackMidiDriver::Attach()
00058 {
00059 JackPort* port;
00060 jack_port_id_t port_index;
00061 char name[REAL_JACK_PORT_NAME_SIZE];
00062 char alias[REAL_JACK_PORT_NAME_SIZE];
00063 int i;
00064
00065 jack_log("JackMidiDriver::Attach fBufferSize = %ld fSampleRate = %ld", fEngineControl->fBufferSize, fEngineControl->fSampleRate);
00066
00067 for (i = 0; i < fCaptureChannels; i++) {
00068 snprintf(alias, sizeof(alias), "%s:%s:out%d", fAliasName, fCaptureDriverName, i + 1);
00069 snprintf(name, sizeof(name), "%s:capture_%d", fClientControl.fName, i + 1);
00070 if (fEngine->PortRegister(fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE, CaptureDriverFlags, fEngineControl->fBufferSize, &port_index) < 0) {
00071 jack_error("driver: cannot register port for %s", name);
00072 return -1;
00073 }
00074 port = fGraphManager->GetPort(port_index);
00075 port->SetAlias(alias);
00076 fCapturePortList[i] = port_index;
00077 jack_log("JackMidiDriver::Attach fCapturePortList[i] port_index = %ld", port_index);
00078 }
00079
00080 for (i = 0; i < fPlaybackChannels; i++) {
00081 snprintf(alias, sizeof(alias), "%s:%s:in%d", fAliasName, fPlaybackDriverName, i + 1);
00082 snprintf(name, sizeof(name), "%s:playback_%d", fClientControl.fName, i + 1);
00083 if (fEngine->PortRegister(fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE, PlaybackDriverFlags, fEngineControl->fBufferSize, &port_index) < 0) {
00084 jack_error("driver: cannot register port for %s", name);
00085 return -1;
00086 }
00087 port = fGraphManager->GetPort(port_index);
00088 port->SetAlias(alias);
00089 fPlaybackPortList[i] = port_index;
00090 jack_log("JackMidiDriver::Attach fPlaybackPortList[i] port_index = %ld", port_index);
00091 }
00092
00093 UpdateLatencies();
00094 return 0;
00095 }
00096
00097 int JackMidiDriver::Detach()
00098 {
00099 int i;
00100 jack_log("JackMidiDriver::Detach");
00101
00102 for (i = 0; i < fCaptureChannels; i++) {
00103 fEngine->PortUnRegister(fClientControl.fRefNum, fCapturePortList[i]);
00104 }
00105
00106 for (i = 0; i < fPlaybackChannels; i++) {
00107 fEngine->PortUnRegister(fClientControl.fRefNum, fPlaybackPortList[i]);
00108 }
00109
00110 return 0;
00111 }
00112
00113 void JackMidiDriver::UpdateLatencies()
00114 {
00115 jack_latency_range_t range;
00116
00117 for (int i = 0; i < fCaptureChannels; i++) {
00118 range.max = range.min = fEngineControl->fBufferSize;
00119 fGraphManager->GetPort(fCapturePortList[i])->SetLatencyRange(JackCaptureLatency, &range);
00120 }
00121
00122 for (int i = 0; i < fPlaybackChannels; i++) {
00123 if (! fEngineControl->fSyncMode) {
00124 range.max = range.min = fEngineControl->fBufferSize * 2;
00125 }
00126 fGraphManager->GetPort(fPlaybackPortList[i])->SetLatencyRange(JackPlaybackLatency, &range);
00127 }
00128 }
00129
00130 int JackMidiDriver::SetBufferSize(jack_nframes_t buffer_size)
00131 {
00132 UpdateLatencies();
00133 return 0;
00134 }
00135
00136 int JackMidiDriver::ProcessReadSync()
00137 {
00138 int res = 0;
00139
00140
00141 if (Read() < 0) {
00142 jack_error("JackMidiDriver::ProcessReadSync: read error");
00143 res = -1;
00144 }
00145
00146 if (ResumeRefNum() < 0) {
00147 jack_error("JackMidiDriver::ProcessReadSync: ResumeRefNum error");
00148 res = -1;
00149 }
00150
00151 return res;
00152 }
00153
00154 int JackMidiDriver::ProcessWriteSync()
00155 {
00156 int res = 0;
00157
00158 if (SuspendRefNum() < 0) {
00159 jack_error("JackMidiDriver::ProcessWriteSync: SuspendRefNum error");
00160 res = -1;
00161 }
00162
00163
00164 if (Write() < 0) {
00165 jack_error("JackMidiDriver::ProcessWriteSync: write error");
00166 res = -1;
00167 }
00168
00169 return res;
00170 }
00171
00172 int JackMidiDriver::ProcessReadAsync()
00173 {
00174 int res = 0;
00175
00176
00177 if (Read() < 0) {
00178 jack_error("JackMidiDriver::ProcessReadAsync: read error");
00179 res = -1;
00180 }
00181
00182
00183 if (Write() < 0) {
00184 jack_error("JackMidiDriver::ProcessReadAsync: write error");
00185 res = -1;
00186 }
00187
00188 if (ResumeRefNum() < 0) {
00189 jack_error("JackMidiDriver::ProcessReadAsync: ResumeRefNum error");
00190 res = -1;
00191 }
00192
00193 return res;
00194 }
00195
00196 int JackMidiDriver::ProcessWriteAsync()
00197 {
00198 return 0;
00199 }
00200
00201 JackMidiBuffer* JackMidiDriver::GetInputBuffer(int port_index)
00202 {
00203 assert(fCapturePortList[port_index]);
00204 return (JackMidiBuffer*)fGraphManager->GetBuffer(fCapturePortList[port_index], fEngineControl->fBufferSize);
00205 }
00206
00207 JackMidiBuffer* JackMidiDriver::GetOutputBuffer(int port_index)
00208 {
00209 assert(fPlaybackPortList[port_index]);
00210 return (JackMidiBuffer*)fGraphManager->GetBuffer(fPlaybackPortList[port_index], fEngineControl->fBufferSize);
00211 }
00212
00213 }