jack2/common/JackMidiDriver.cpp at develop · jackaudio/jack2 · GitHub

History

213 lines (173 loc) · 6.32 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

(at your option) any later version.

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

#include "JackSystemDeps.h"

#include "JackMidiDriver.h"

#include "JackTime.h"

#include "JackError.h"

#include "JackEngineControl.h"

#include "JackPort.h"

#include "JackGraphManager.h"

#include "JackException.h"

#include <assert.h>

using namespace std;

namespace Jack

{

JackMidiDriver::JackMidiDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)

: JackDriver(name, alias, engine, table)

{}

JackMidiDriver::~JackMidiDriver()

{}

int JackMidiDriver::Open(bool capturing,

bool playing,

int inchannels,

int outchannels,

bool monitor,

const char* capture_driver_name,

const char* playback_driver_name,

jack_nframes_t capture_latency,

jack_nframes_t playback_latency)

{

fCaptureChannels = inchannels;

fPlaybackChannels = outchannels;

return JackDriver::Open(0, 0, capturing, playing, inchannels, outchannels, monitor, capture_driver_name, playback_driver_name, capture_latency, playback_latency);

}

int JackMidiDriver::Attach()

{

JackPort* port;

jack_port_id_t port_index;

char name[REAL_JACK_PORT_NAME_SIZE+1];

char alias[REAL_JACK_PORT_NAME_SIZE+1];

int i;

jack_log("JackMidiDriver::Attach fBufferSize = %ld fSampleRate = %ld", fEngineControl->fBufferSize, fEngineControl->fSampleRate);

for (i = 0; i < fCaptureChannels; i++) {

snprintf(alias, sizeof(alias), "%s:%s:out%d", fAliasName, fCaptureDriverName, i + 1);

snprintf(name, sizeof(name), "%s:capture_%d", fClientControl.fName, i + 1);

if (fEngine->PortRegister(fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE, CaptureDriverFlags, fEngineControl->fBufferSize, &port_index) < 0) {

jack_error("driver: cannot register port for %s", name);

return -1;

}

port = fGraphManager->GetPort(port_index);

port->SetAlias(alias);

fCapturePortList[i] = port_index;

jack_log("JackMidiDriver::Attach fCapturePortList[i] port_index = %ld", port_index);

}

for (i = 0; i < fPlaybackChannels; i++) {

snprintf(alias, sizeof(alias), "%s:%s:in%d", fAliasName, fPlaybackDriverName, i + 1);

snprintf(name, sizeof(name), "%s:playback_%d", fClientControl.fName, i + 1);

if (fEngine->PortRegister(fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE, PlaybackDriverFlags, fEngineControl->fBufferSize, &port_index) < 0) {

jack_error("driver: cannot register port for %s", name);

return -1;

}

port = fGraphManager->GetPort(port_index);

port->SetAlias(alias);

fPlaybackPortList[i] = port_index;

jack_log("JackMidiDriver::Attach fPlaybackPortList[i] port_index = %ld", port_index);

}

UpdateLatencies();

return 0;

}

int JackMidiDriver::Detach()

{

int i;

jack_log("JackMidiDriver::Detach");

for (i = 0; i < fCaptureChannels; i++) {

fEngine->PortUnRegister(fClientControl.fRefNum, fCapturePortList[i]);

}

for (i = 0; i < fPlaybackChannels; i++) {

fEngine->PortUnRegister(fClientControl.fRefNum, fPlaybackPortList[i]);

}

return 0;

}

void JackMidiDriver::UpdateLatencies()

{

jack_latency_range_t range;

for (int i = 0; i < fCaptureChannels; i++) {

range.max = range.min = fEngineControl->fBufferSize;

fGraphManager->GetPort(fCapturePortList[i])->SetLatencyRange(JackCaptureLatency, &range);

}

for (int i = 0; i < fPlaybackChannels; i++) {

if (! fEngineControl->fSyncMode) {

range.max = range.min = fEngineControl->fBufferSize * 2;

}

fGraphManager->GetPort(fPlaybackPortList[i])->SetLatencyRange(JackPlaybackLatency, &range);

}

int JackMidiDriver::SetBufferSize(jack_nframes_t buffer_size)

{

UpdateLatencies();

return 0;

}

int JackMidiDriver::ProcessReadSync()

{

int res = 0;

// Read input buffers for the current cycle

if (Read() < 0) {

jack_error("JackMidiDriver::ProcessReadSync: read error");

res = -1;

}

if (ResumeRefNum() < 0) {

jack_error("JackMidiDriver::ProcessReadSync: ResumeRefNum error");

res = -1;

}

return res;

}

int JackMidiDriver::ProcessWriteSync()

{

int res = 0;

if (SuspendRefNum() < 0) {

jack_error("JackMidiDriver::ProcessWriteSync: SuspendRefNum error");

res = -1;

}

// Write output buffers from the current cycle

if (Write() < 0) {

jack_error("JackMidiDriver::ProcessWriteSync: write error");

res = -1;

}

return res;

}

int JackMidiDriver::ProcessReadAsync()

{

int res = 0;

// Read input buffers for the current cycle

if (Read() < 0) {

jack_error("JackMidiDriver::ProcessReadAsync: read error");

res = -1;

}

// Write output buffers from the previous cycle

if (Write() < 0) {

jack_error("JackMidiDriver::ProcessReadAsync: write error");

res = -1;

}

if (ResumeRefNum() < 0) {

jack_error("JackMidiDriver::ProcessReadAsync: ResumeRefNum error");

res = -1;

}

return res;

}

int JackMidiDriver::ProcessWriteAsync()

{

return 0;

}

JackMidiBuffer* JackMidiDriver::GetInputBuffer(int port_index)

{

assert(fCapturePortList[port_index]);

return (JackMidiBuffer*)fGraphManager->GetBuffer(fCapturePortList[port_index], fEngineControl->fBufferSize);

}

JackMidiBuffer* JackMidiDriver::GetOutputBuffer(int port_index)

{

assert(fPlaybackPortList[port_index]);

return (JackMidiBuffer*)fGraphManager->GetBuffer(fPlaybackPortList[port_index], fEngineControl->fBufferSize);

}

} // end of namespace

jack2/common/JackMidiDriver.cpp at develop · jackaudio/jack2 · GitHub

Uh oh!

Expand file tree

Breadcrumbs

JackMidiDriver.cpp

Latest commit

History

Breadcrumbs

JackMidiDriver.cpp

File metadata and controls