214 lines
6.3 KiB
C++
214 lines
6.3 KiB
C++
/*
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Copyright (C) 2009 Grame.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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(at your option) any later version.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "JackSystemDeps.h"
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#include "JackMidiDriver.h"
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#include "JackTime.h"
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#include "JackError.h"
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#include "JackEngineControl.h"
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#include "JackPort.h"
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#include "JackGraphManager.h"
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#include "JackException.h"
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#include <assert.h>
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using namespace std;
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namespace Jack
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{
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JackMidiDriver::JackMidiDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table)
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: JackDriver(name, alias, engine, table)
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{}
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JackMidiDriver::~JackMidiDriver()
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{}
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int JackMidiDriver::Open(bool capturing,
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bool playing,
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int inchannels,
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int outchannels,
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bool monitor,
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const char* capture_driver_name,
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const char* playback_driver_name,
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jack_nframes_t capture_latency,
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jack_nframes_t playback_latency)
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{
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fCaptureChannels = inchannels;
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fPlaybackChannels = outchannels;
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return JackDriver::Open(0, 0, capturing, playing, inchannels, outchannels, monitor, capture_driver_name, playback_driver_name, capture_latency, playback_latency);
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}
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int JackMidiDriver::Attach()
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{
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JackPort* port;
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jack_port_id_t port_index;
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char name[REAL_JACK_PORT_NAME_SIZE+1];
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char alias[REAL_JACK_PORT_NAME_SIZE+1];
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int i;
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jack_log("JackMidiDriver::Attach fBufferSize = %ld fSampleRate = %ld", fEngineControl->fBufferSize, fEngineControl->fSampleRate);
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for (i = 0; i < fCaptureChannels; i++) {
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snprintf(alias, sizeof(alias), "%s:%s:out%d", fAliasName, fCaptureDriverName, i + 1);
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snprintf(name, sizeof(name), "%s:capture_%d", fClientControl.fName, i + 1);
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if (fEngine->PortRegister(fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE, CaptureDriverFlags, fEngineControl->fBufferSize, &port_index) < 0) {
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jack_error("driver: cannot register port for %s", name);
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return -1;
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}
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port = fGraphManager->GetPort(port_index);
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port->SetAlias(alias);
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fCapturePortList[i] = port_index;
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jack_log("JackMidiDriver::Attach fCapturePortList[i] port_index = %ld", port_index);
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}
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for (i = 0; i < fPlaybackChannels; i++) {
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snprintf(alias, sizeof(alias), "%s:%s:in%d", fAliasName, fPlaybackDriverName, i + 1);
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snprintf(name, sizeof(name), "%s:playback_%d", fClientControl.fName, i + 1);
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if (fEngine->PortRegister(fClientControl.fRefNum, name, JACK_DEFAULT_MIDI_TYPE, PlaybackDriverFlags, fEngineControl->fBufferSize, &port_index) < 0) {
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jack_error("driver: cannot register port for %s", name);
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return -1;
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}
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port = fGraphManager->GetPort(port_index);
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port->SetAlias(alias);
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fPlaybackPortList[i] = port_index;
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jack_log("JackMidiDriver::Attach fPlaybackPortList[i] port_index = %ld", port_index);
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}
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UpdateLatencies();
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return 0;
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}
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int JackMidiDriver::Detach()
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{
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int i;
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jack_log("JackMidiDriver::Detach");
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for (i = 0; i < fCaptureChannels; i++) {
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fEngine->PortUnRegister(fClientControl.fRefNum, fCapturePortList[i]);
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}
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for (i = 0; i < fPlaybackChannels; i++) {
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fEngine->PortUnRegister(fClientControl.fRefNum, fPlaybackPortList[i]);
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}
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return 0;
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}
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void JackMidiDriver::UpdateLatencies()
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{
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jack_latency_range_t range;
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for (int i = 0; i < fCaptureChannels; i++) {
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range.max = range.min = fEngineControl->fBufferSize;
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fGraphManager->GetPort(fCapturePortList[i])->SetLatencyRange(JackCaptureLatency, &range);
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}
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for (int i = 0; i < fPlaybackChannels; i++) {
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if (! fEngineControl->fSyncMode) {
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range.max = range.min = fEngineControl->fBufferSize * 2;
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}
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fGraphManager->GetPort(fPlaybackPortList[i])->SetLatencyRange(JackPlaybackLatency, &range);
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}
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}
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int JackMidiDriver::SetBufferSize(jack_nframes_t buffer_size)
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{
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UpdateLatencies();
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return 0;
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}
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int JackMidiDriver::ProcessReadSync()
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{
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int res = 0;
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// Read input buffers for the current cycle
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if (Read() < 0) {
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jack_error("JackMidiDriver::ProcessReadSync: read error");
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res = -1;
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}
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if (ResumeRefNum() < 0) {
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jack_error("JackMidiDriver::ProcessReadSync: ResumeRefNum error");
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res = -1;
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}
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return res;
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}
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int JackMidiDriver::ProcessWriteSync()
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{
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int res = 0;
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if (SuspendRefNum() < 0) {
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jack_error("JackMidiDriver::ProcessWriteSync: SuspendRefNum error");
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res = -1;
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}
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// Write output buffers from the current cycle
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if (Write() < 0) {
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jack_error("JackMidiDriver::ProcessWriteSync: write error");
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res = -1;
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}
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return res;
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}
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int JackMidiDriver::ProcessReadAsync()
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{
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int res = 0;
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// Read input buffers for the current cycle
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if (Read() < 0) {
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jack_error("JackMidiDriver::ProcessReadAsync: read error");
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res = -1;
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}
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// Write output buffers from the previous cycle
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if (Write() < 0) {
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jack_error("JackMidiDriver::ProcessReadAsync: write error");
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res = -1;
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}
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if (ResumeRefNum() < 0) {
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jack_error("JackMidiDriver::ProcessReadAsync: ResumeRefNum error");
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res = -1;
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}
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return res;
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}
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int JackMidiDriver::ProcessWriteAsync()
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{
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return 0;
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}
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JackMidiBuffer* JackMidiDriver::GetInputBuffer(int port_index)
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{
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assert(fCapturePortList[port_index]);
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return (JackMidiBuffer*)fGraphManager->GetBuffer(fCapturePortList[port_index], fEngineControl->fBufferSize);
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}
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JackMidiBuffer* JackMidiDriver::GetOutputBuffer(int port_index)
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{
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assert(fPlaybackPortList[port_index]);
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return (JackMidiBuffer*)fGraphManager->GetBuffer(fPlaybackPortList[port_index], fEngineControl->fBufferSize);
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}
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} // end of namespace
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