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

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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

(at your option) any later version.

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

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 "JackAudioAdapter.h"

#include "JackError.h"

#include "JackCompilerDeps.h"

#include "JackTools.h"

#include "JackTime.h"

#include "jslist.h"

#include <stdio.h>

#include <stdlib.h>

#include <assert.h>

using namespace std;

namespace Jack

{

int JackAudioAdapter::Process(jack_nframes_t frames, void* arg)

{

JackAudioAdapter* adapter = static_cast<JackAudioAdapter*>(arg);

return adapter->ProcessAux(frames);

}

int JackAudioAdapter::ProcessAux(jack_nframes_t frames)

{

// Always clear output

for (int i = 0; i < fAudioAdapter->GetInputs(); i++) {

fInputBufferList[i] = (jack_default_audio_sample_t*)jack_port_get_buffer(fCapturePortList[i], frames);

memset(fInputBufferList[i], 0, frames * sizeof(jack_default_audio_sample_t));

}

for (int i = 0; i < fAudioAdapter->GetOutputs(); i++) {

fOutputBufferList[i] = (jack_default_audio_sample_t*)jack_port_get_buffer(fPlaybackPortList[i], frames);

}

fAudioAdapter->PullAndPush(fInputBufferList, fOutputBufferList, frames);

return 0;

}

int JackAudioAdapter::BufferSize(jack_nframes_t buffer_size, void* arg)

{

JackAudioAdapter* adapter = static_cast<JackAudioAdapter*>(arg);

adapter->Reset();

adapter->fAudioAdapter->SetHostBufferSize(buffer_size);

return 0;

}

int JackAudioAdapter::SampleRate(jack_nframes_t sample_rate, void* arg)

{

JackAudioAdapter* adapter = static_cast<JackAudioAdapter*>(arg);

adapter->Reset();

adapter->fAudioAdapter->SetHostSampleRate(sample_rate);

return 0;

}

void JackAudioAdapter::Latency(jack_latency_callback_mode_t mode, void* arg)

{

JackAudioAdapter* adapter = static_cast<JackAudioAdapter*>(arg);

if (mode == JackCaptureLatency) {

for (int i = 0; i < adapter->fAudioAdapter->GetInputs(); i++) {

jack_latency_range_t range;

range.min = range.max = adapter->fAudioAdapter->GetInputLatency(i);

jack_port_set_latency_range(adapter->fCapturePortList[i], JackCaptureLatency, &range);

}

} else {

for (int i = 0; i < adapter->fAudioAdapter->GetOutputs(); i++) {

jack_latency_range_t range;

range.min = range.max = adapter->fAudioAdapter->GetOutputLatency(i);

jack_port_set_latency_range(adapter->fPlaybackPortList[i], JackPlaybackLatency, &range);

}

JackAudioAdapter::JackAudioAdapter(jack_client_t* client, JackAudioAdapterInterface* audio_io, const JSList* params)

:fClient(client), fAudioAdapter(audio_io)

{

const JSList* node;

const jack_driver_param_t* param;

fAutoConnect = false;

for (node = params; node; node = jack_slist_next(node)) {

param = (const jack_driver_param_t*)node->data;

switch (param->character) {

case 'c':

fAutoConnect = true;

break;

}

JackAudioAdapter::~JackAudioAdapter()

{

// When called, Close has already been used for the client, thus ports are already unregistered.

delete fAudioAdapter;

}

void JackAudioAdapter::FreePorts()

{

for (int i = 0; i < fAudioAdapter->GetInputs(); i++) {

if (fCapturePortList[i]) {

jack_port_unregister(fClient, fCapturePortList[i]);

}

for (int i = 0; i < fAudioAdapter->GetOutputs(); i++) {

if (fPlaybackPortList[i]) {

jack_port_unregister(fClient, fPlaybackPortList[i]);

}

delete[] fCapturePortList;

delete[] fPlaybackPortList;

delete[] fInputBufferList;

delete[] fOutputBufferList;

}

void JackAudioAdapter::ConnectPorts()

{

const char** ports;

ports = jack_get_ports(fClient, NULL, NULL, JackPortIsPhysical | JackPortIsInput);

if (ports != NULL) {

for (int i = 0; i < fAudioAdapter->GetInputs() && ports[i]; i++) {

jack_connect(fClient, jack_port_name(fCapturePortList[i]), ports[i]);

}

jack_free(ports);

}

ports = jack_get_ports(fClient, NULL, NULL, JackPortIsPhysical | JackPortIsOutput);

if (ports != NULL) {

for (int i = 0; i < fAudioAdapter->GetOutputs() && ports[i]; i++) {

jack_connect(fClient, ports[i], jack_port_name(fPlaybackPortList[i]));

}

jack_free(ports);

}

void JackAudioAdapter::Reset()

{

fAudioAdapter->Reset();

}

int JackAudioAdapter::Open()

{

char name[32];

jack_log("JackAudioAdapter::Open fCaptureChannels %d fPlaybackChannels %d", fAudioAdapter->GetInputs(), fAudioAdapter->GetOutputs());

fAudioAdapter->Create();

//jack ports

fCapturePortList = new jack_port_t*[fAudioAdapter->GetInputs()];

fPlaybackPortList = new jack_port_t*[fAudioAdapter->GetOutputs()];

fInputBufferList = new jack_default_audio_sample_t*[fAudioAdapter->GetInputs()];

fOutputBufferList = new jack_default_audio_sample_t*[fAudioAdapter->GetOutputs()];

for (int i = 0; i < fAudioAdapter->GetInputs(); i++) {

snprintf(name, sizeof(name), "capture_%d", i + 1);

if ((fCapturePortList[i] = jack_port_register(fClient, name, JACK_DEFAULT_AUDIO_TYPE, CaptureDriverFlags, 0)) == NULL) {

goto fail;

}

for (int i = 0; i < fAudioAdapter->GetOutputs(); i++) {

snprintf(name, sizeof(name), "playback_%d", i + 1);

if ((fPlaybackPortList[i] = jack_port_register(fClient, name, JACK_DEFAULT_AUDIO_TYPE, PlaybackDriverFlags, 0)) == NULL) {

goto fail;

}

//callbacks and activation

if (jack_set_process_callback(fClient, Process, this) < 0) {

goto fail;

}

if (jack_set_buffer_size_callback(fClient, BufferSize, this) < 0) {

goto fail;

}

if (jack_set_sample_rate_callback(fClient, SampleRate, this) < 0) {

goto fail;

}

if (jack_set_latency_callback(fClient, Latency, this) < 0) {

goto fail;

}

if (jack_activate(fClient) < 0) {

goto fail;

}

if (fAutoConnect) {

ConnectPorts();

}

// Ring buffers are now allocated...

return fAudioAdapter->Open();

return 0;

fail:

FreePorts();

fAudioAdapter->Destroy();

return -1;

}

int JackAudioAdapter::Close()

{

fAudioAdapter->Close();

fAudioAdapter->Destroy();

return 0;

}

} //namespace

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

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