418 lines
13 KiB
C++
418 lines
13 KiB
C++
/*
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Copyright (C) 2001 Paul Davis
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Copyright (C) 2004-2008 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 "JackAudioDriver.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 "JackLockedEngine.h"
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#include "JackException.h"
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#include <assert.h>
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#include "JackServerGlobals.h"
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using namespace std;
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namespace Jack
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{
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JackAudioDriver::JackAudioDriver(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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JackAudioDriver::~JackAudioDriver()
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{}
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int JackAudioDriver::SetBufferSize(jack_nframes_t buffer_size)
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{
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// Update engine and graph manager state
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fEngineControl->fBufferSize = buffer_size;
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fGraphManager->SetBufferSize(buffer_size);
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fEngineControl->UpdateTimeOut();
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UpdateLatencies();
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// Redirected on slaves drivers...
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return JackDriver::SetBufferSize(buffer_size);
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}
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int JackAudioDriver::SetSampleRate(jack_nframes_t sample_rate)
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{
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fEngineControl->fSampleRate = sample_rate;
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fEngineControl->UpdateTimeOut();
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// Redirected on slaves drivers...
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return JackDriver::SetSampleRate(sample_rate);
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}
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int JackAudioDriver::Open(jack_nframes_t buffer_size,
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jack_nframes_t samplerate,
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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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fWithMonitorPorts = monitor;
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memset(fCapturePortList, 0, sizeof(jack_port_id_t) * DRIVER_PORT_NUM);
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memset(fPlaybackPortList, 0, sizeof(jack_port_id_t) * DRIVER_PORT_NUM);
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memset(fMonitorPortList, 0, sizeof(jack_port_id_t) * DRIVER_PORT_NUM);
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return JackDriver::Open(buffer_size, samplerate, capturing, playing, inchannels, outchannels,
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monitor, capture_driver_name, playback_driver_name, capture_latency, playback_latency);
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}
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void JackAudioDriver::UpdateLatencies()
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{
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jack_latency_range_t input_range;
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jack_latency_range_t output_range;
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jack_latency_range_t monitor_range;
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for (int i = 0; i < fCaptureChannels; i++) {
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input_range.max = input_range.min = fEngineControl->fBufferSize + fCaptureLatency;
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fGraphManager->GetPort(fCapturePortList[i])->SetLatencyRange(JackCaptureLatency, &input_range);
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}
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for (int i = 0; i < fPlaybackChannels; i++) {
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output_range.max = output_range.min = fPlaybackLatency;
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if (fEngineControl->fSyncMode) {
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output_range.max = output_range.min += fEngineControl->fBufferSize;
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} else {
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output_range.max = output_range.min += fEngineControl->fBufferSize * 2;
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}
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fGraphManager->GetPort(fPlaybackPortList[i])->SetLatencyRange(JackPlaybackLatency, &output_range);
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if (fWithMonitorPorts) {
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monitor_range.min = monitor_range.max = fEngineControl->fBufferSize;
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fGraphManager->GetPort(fMonitorPortList[i])->SetLatencyRange(JackCaptureLatency, &monitor_range);
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}
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}
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}
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int JackAudioDriver::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("JackAudioDriver::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_AUDIO_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("JackAudioDriver::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_AUDIO_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("JackAudioDriver::Attach fPlaybackPortList[i] port_index = %ld", port_index);
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// Monitor ports
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if (fWithMonitorPorts) {
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jack_log("Create monitor port");
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snprintf(name, sizeof(name), "%s:monitor_%u", fClientControl.fName, i + 1);
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if (fEngine->PortRegister(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, fEngineControl->fBufferSize, &port_index) < 0) {
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jack_error("Cannot register monitor port for %s", name);
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return -1;
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} else {
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fMonitorPortList[i] = port_index;
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}
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}
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}
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UpdateLatencies();
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return 0;
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}
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int JackAudioDriver::Detach()
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{
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int i;
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jack_log("JackAudioDriver::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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if (fWithMonitorPorts) {
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fEngine->PortUnRegister(fClientControl.fRefNum, fMonitorPortList[i]);
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}
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}
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return 0;
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}
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int JackAudioDriver::Write()
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{
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for (int i = 0; i < fPlaybackChannels; i++) {
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if (fGraphManager->GetConnectionsNum(fPlaybackPortList[i]) > 0) {
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jack_default_audio_sample_t* buffer = GetOutputBuffer(i);
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int size = sizeof(jack_default_audio_sample_t) * fEngineControl->fBufferSize;
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// Monitor ports
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if (fWithMonitorPorts && fGraphManager->GetConnectionsNum(fMonitorPortList[i]) > 0) {
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memcpy(GetMonitorBuffer(i), buffer, size);
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}
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}
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}
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return 0;
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}
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int JackAudioDriver::Process()
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{
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int err = (fEngineControl->fSyncMode) ? ProcessSync() : ProcessAsync();
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if(err && JackServerGlobals::on_failure != NULL) {
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JackServerGlobals::on_failure();
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}
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return err;
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}
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/*
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The driver "asynchronous" mode: output buffers computed at the *previous cycle* are used, the server does not
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synchronize to the end of client graph execution.
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*/
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int JackAudioDriver::ProcessAsync()
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{
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// Read input buffers for the current cycle
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if (Read() < 0) {
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jack_error("JackAudioDriver::ProcessAsync: read error, stopping...");
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return -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("JackAudioDriver::ProcessAsync: write error, stopping...");
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return -1;
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}
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// Process graph
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ProcessGraphAsync();
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// Keep end cycle time
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JackDriver::CycleTakeEndTime();
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return 0;
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}
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void JackAudioDriver::ProcessGraphAsync()
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{
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// Process graph
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if (fIsMaster) {
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ProcessGraphAsyncMaster();
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} else {
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ProcessGraphAsyncSlave();
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}
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}
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/*
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Used when the driver works in master mode.
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*/
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void JackAudioDriver::ProcessGraphAsyncMaster()
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{
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// fBeginDateUst is set in the "low level" layer, fEndDateUst is from previous cycle
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if (!fEngine->Process(fBeginDateUst, fEndDateUst)) {
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jack_error("JackAudioDriver::ProcessGraphAsyncMaster: Process error");
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}
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if (ResumeRefNum() < 0) {
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jack_error("JackAudioDriver::ProcessGraphAsyncMaster: ResumeRefNum error");
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}
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if (ProcessReadSlaves() < 0) {
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jack_error("JackAudioDriver::ProcessGraphAsyncMaster: ProcessReadSlaves error");
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}
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if (ProcessWriteSlaves() < 0) {
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jack_error("JackAudioDriver::ProcessGraphAsyncMaster: ProcessWriteSlaves error");
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}
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// Does not wait on graph execution end
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}
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/*
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Used when the driver works in slave mode.
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*/
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void JackAudioDriver::ProcessGraphAsyncSlave()
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{
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if (ResumeRefNum() < 0) {
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jack_error("JackAudioDriver::ProcessGraphAsyncSlave: ResumeRefNum error");
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}
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}
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/*
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The driver "synchronous" mode: the server does synchronize to the end of client graph execution,
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if graph process succeed, output buffers computed at the *current cycle* are used.
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*/
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int JackAudioDriver::ProcessSync()
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{
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// Read input buffers for the current cycle
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if (Read() < 0) {
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jack_error("JackAudioDriver::ProcessSync: read error, stopping...");
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return -1;
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}
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// Process graph
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ProcessGraphSync();
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// Write output buffers from the current cycle
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if (Write() < 0) {
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jack_error("JackAudioDriver::ProcessSync: write error, stopping...");
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return -1;
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}
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// Keep end cycle time
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JackDriver::CycleTakeEndTime();
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return 0;
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}
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void JackAudioDriver::ProcessGraphSync()
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{
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// Process graph
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if (fIsMaster) {
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ProcessGraphSyncMaster();
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} else {
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ProcessGraphSyncSlave();
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}
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}
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/*
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Used when the driver works in master mode.
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*/
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void JackAudioDriver::ProcessGraphSyncMaster()
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{
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// fBeginDateUst is set in the "low level" layer, fEndDateUst is from previous cycle
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if (fEngine->Process(fBeginDateUst, fEndDateUst)) {
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if (ResumeRefNum() < 0) {
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jack_error("JackAudioDriver::ProcessGraphSyncMaster: ResumeRefNum error");
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}
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if (ProcessReadSlaves() < 0) {
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jack_error("JackAudioDriver::ProcessGraphSync: ProcessReadSlaves error, engine may now behave abnormally!!");
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}
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if (ProcessWriteSlaves() < 0) {
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jack_error("JackAudioDriver::ProcessGraphSync: ProcessWriteSlaves error, engine may now behave abnormally!!");
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}
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// Waits for graph execution end
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if (SuspendRefNum() < 0) {
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jack_error("JackAudioDriver::ProcessGraphSync: SuspendRefNum error, engine may now behave abnormally!!");
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}
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} else { // Graph not finished: do not activate it
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jack_error("JackAudioDriver::ProcessGraphSync: Process error");
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}
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}
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/*
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Used when the driver works in slave mode.
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*/
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void JackAudioDriver::ProcessGraphSyncSlave()
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{
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if (ResumeRefNum() < 0) {
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jack_error("JackAudioDriver::ProcessGraphSyncSlave: ResumeRefNum error");
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}
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}
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jack_default_audio_sample_t* JackAudioDriver::GetInputBuffer(int port_index)
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{
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return fCapturePortList[port_index]
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? (jack_default_audio_sample_t*)fGraphManager->GetBuffer(fCapturePortList[port_index], fEngineControl->fBufferSize)
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: NULL;
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}
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jack_default_audio_sample_t* JackAudioDriver::GetOutputBuffer(int port_index)
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{
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return fPlaybackPortList[port_index]
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? (jack_default_audio_sample_t*)fGraphManager->GetBuffer(fPlaybackPortList[port_index], fEngineControl->fBufferSize)
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: NULL;
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}
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jack_default_audio_sample_t* JackAudioDriver::GetMonitorBuffer(int port_index)
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{
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return fMonitorPortList[port_index]
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? (jack_default_audio_sample_t*)fGraphManager->GetBuffer(fMonitorPortList[port_index], fEngineControl->fBufferSize)
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: NULL;
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}
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int JackAudioDriver::ClientNotify(int refnum, const char* name, int notify, int sync, const char* message, int value1, int value2)
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{
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switch (notify) {
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case kLatencyCallback:
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HandleLatencyCallback(value1);
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break;
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default:
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JackDriver::ClientNotify(refnum, name, notify, sync, message, value1, value2);
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break;
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}
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return 0;
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}
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void JackAudioDriver::HandleLatencyCallback(int status)
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{
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jack_latency_callback_mode_t mode = (status == 0) ? JackCaptureLatency : JackPlaybackLatency;
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for (int i = 0; i < fCaptureChannels; i++) {
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if (mode == JackPlaybackLatency) {
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fGraphManager->RecalculateLatency(fCapturePortList[i], mode);
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}
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}
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for (int i = 0; i < fPlaybackChannels; i++) {
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if (mode == JackCaptureLatency) {
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fGraphManager->RecalculateLatency(fPlaybackPortList[i], mode);
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}
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}
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}
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} // end of namespace
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