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/*
Copyright (C) 2008 Grame
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 "JackLibSampleRateResampler.h"
#include "JackError.h"
#include "JackCompilerDeps.h"
#include "JackTools.h"
#include "jslist.h"
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
using namespace std;
namespace Jack
{
//static methods ***********************************************************
int JackAudioAdapter::Process(jack_nframes_t frames, void* arg)
{
JackAudioAdapter* adapter = static_cast<JackAudioAdapter*>(arg);
float* buffer;
bool failure = false;
int i;
if (!adapter->fAudioAdapter->IsRunning())
return 0;
// DLL
adapter->fAudioAdapter->SetCallbackTime(jack_get_time());
// Push/pull from ringbuffer
for (i = 0; i < adapter->fCaptureChannels; i++)
{
buffer = static_cast<float*>(jack_port_get_buffer(adapter->fCapturePortList[i], frames));
if (adapter->fCaptureRingBuffer[i]->Read(buffer, frames) < frames)
failure = true;
}
for (i = 0; i < adapter->fPlaybackChannels; i++)
{
buffer = static_cast<float*>(jack_port_get_buffer(adapter->fPlaybackPortList[i], frames));
if (adapter->fPlaybackRingBuffer[i]->Write(buffer, frames) < frames)
failure = true;
}
// Reset all ringbuffers in case of failure
if (failure)
{
jack_error("JackCallbackAudioAdapter::Process ringbuffer failure... reset");
adapter->Reset();
}
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;
}
//JackAudioAdapter *********************************************************
JackAudioAdapter::~JackAudioAdapter()
{
// When called, Close has already been used for the client, thus ports are already unregistered.
int i;
for (i = 0; i < fCaptureChannels; i++)
delete(fCaptureRingBuffer[i]);
for (i = 0; i < fPlaybackChannels; i++)
delete(fPlaybackRingBuffer[i]);
delete[] fCaptureRingBuffer;
delete[] fPlaybackRingBuffer;
delete fAudioAdapter;
}
void JackAudioAdapter::FreePorts()
{
int i;
for ( i = 0; i < fCaptureChannels; i++ )
if ( fCapturePortList[i] )
jack_port_unregister ( fJackClient, fCapturePortList[i] );
for (i = 0; i < fCaptureChannels; i++)
if ( fPlaybackPortList[i] )
jack_port_unregister (fJackClient, fPlaybackPortList[i] );
delete[] fCapturePortList;
delete[] fPlaybackPortList;
}
void JackAudioAdapter::Reset()
{
int i;
for (i = 0; i < fCaptureChannels; i++)
fCaptureRingBuffer[i]->Reset();
for (i = 0; i < fPlaybackChannels; i++)
fPlaybackRingBuffer[i]->Reset();
fAudioAdapter->Reset();
}
int JackAudioAdapter::Open()
{
int i;
char name[32];
fCaptureChannels = fAudioAdapter->GetInputs();
fPlaybackChannels = fAudioAdapter->GetOutputs();
jack_log("JackAudioAdapter::Open fCaptureChannels %d fPlaybackChannels %d", fCaptureChannels, fPlaybackChannels);
//ringbuffers
fCaptureRingBuffer = new JackResampler*[fCaptureChannels];
fPlaybackRingBuffer = new JackResampler*[fPlaybackChannels];
for ( i = 0; i < fCaptureChannels; i++ )
fCaptureRingBuffer[i] = new JackLibSampleRateResampler();
for ( i = 0; i < fPlaybackChannels; i++ )
fPlaybackRingBuffer[i] = new JackLibSampleRateResampler();
fAudioAdapter->SetRingBuffers(fCaptureRingBuffer, fPlaybackRingBuffer);
if ( fCaptureChannels )
jack_log ( "ReadSpace = %ld", fCaptureRingBuffer[0]->ReadSpace() );
if ( fPlaybackChannels )
jack_log ( "WriteSpace = %ld", fPlaybackRingBuffer[0]->WriteSpace() );
//jack ports
fCapturePortList = new jack_port_t* [fCaptureChannels];
fPlaybackPortList = new jack_port_t* [fPlaybackChannels];
for (i = 0; i < fCaptureChannels; i++)
{
sprintf(name, "capture_%d", i+1);
if ( ( fCapturePortList[i] = jack_port_register ( fJackClient, name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0 ) ) == NULL )
goto fail;
}
for (i = 0; i < fPlaybackChannels; i++)
{
sprintf(name, "playback_%d", i+1);
if ( ( fPlaybackPortList[i] = jack_port_register ( fJackClient, name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0 ) ) == NULL )
goto fail;
}
//callbacks and activation
if ( jack_set_process_callback ( fJackClient, Process, this ) < 0 )
goto fail;
if ( jack_set_buffer_size_callback ( fJackClient, BufferSize, this ) < 0 )
goto fail;
if ( jack_set_sample_rate_callback ( fJackClient, SampleRate, this ) < 0 )
goto fail;
if ( jack_activate ( fJackClient ) < 0 )
goto fail;
//ringbuffers and jack clients are ok, we can now open the adapter driver interface
return fAudioAdapter->Open();
fail:
FreePorts();
return -1;
}
int JackAudioAdapter::Close()
{
return fAudioAdapter->Close();
}
} //namespace
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