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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 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
00144 if (Read() < 0) {
00145 jack_error("JackMidiDriver::Process: read error, skip cycle");
00146 return 0;
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
00158 if (Write() < 0) {
00159 jack_error("JackMidiDriver::Process: write error, skip cycle");
00160 return 0;
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 }