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// ------------------------------------------------------------------------
// audioio-arts.cpp: Interface for communicating with aRts/MCOP.
// Copyright (C) 2000,2002 Kai Vehmanen
//
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// ------------------------------------------------------------------------
#include "audioio-device.h"
#include "eca-logger.h"
#include "eca-version.h"
extern "C" {
#include <artsc.h>
}
#include "audioio_arts.h"
#ifdef ECA_ENABLE_AUDIOIO_PLUGINS
static const char* audio_io_keyword_const = "arts";
static const char* audio_io_keyword_regex_const = "^arts$";
const char* audio_io_keyword(void){return(audio_io_keyword_const); }
const char* audio_io_keyword_regex(void){return(audio_io_keyword_regex_const); }
int audio_io_interface_version(void) { return(ecasound_library_version_current); }
#endif
int ARTS_INTERFACE::ref_rep = 0;
ARTS_INTERFACE::ARTS_INTERFACE(const string& name)
{
set_label(name);
}
ARTS_INTERFACE::~ARTS_INTERFACE(void)
{
if (is_open() == true && is_running()) stop();
if (is_open() == true) {
close();
}
--ref_rep;
if (ref_rep == 0) ::arts_free();
}
ARTS_INTERFACE* ARTS_INTERFACE::clone(void) const
{
ARTS_INTERFACE* target = new ARTS_INTERFACE();
for(int n = 0; n < number_of_params(); n++) {
target->set_parameter(n + 1, get_parameter(n + 1));
}
return(target);
}
void ARTS_INTERFACE::open(void) throw(AUDIO_IO::SETUP_ERROR&)
{
if (ref_rep == 0) {
int err = ::arts_init();
if (err < 0) {
throw(SETUP_ERROR(SETUP_ERROR::unexpected, "AUDIOIO-ARTS: unable to connect to aRts server: " + string(arts_error_text(err))));
}
}
++ref_rep;
if (io_mode() == io_read) {
stream_rep = ::arts_record_stream(samples_per_second(), bits(), channels(), "ecasound-input");
}
else if (io_mode() == io_write) {
stream_rep = ::arts_play_stream(samples_per_second(), bits(), channels(), "ecasound-output");
}
else {
throw(SETUP_ERROR(SETUP_ERROR::io_mode, "AUDIOIO-ARTS: Simultanious input/output not supported."));
}
::arts_stream_set(stream_rep, ARTS_P_BUFFER_SIZE, buffersize() * frame_size());
::arts_stream_set(stream_rep, ARTS_P_BLOCKING, 1);
samples_rep = 0;
double total_latency = ::arts_stream_get(stream_rep, ARTS_P_TOTAL_LATENCY);
latency_rep = static_cast<long int>(total_latency * samples_per_second() / 1000.0f);
AUDIO_IO::open();
}
void ARTS_INTERFACE::stop(void)
{
AUDIO_IO_DEVICE::stop();
}
void ARTS_INTERFACE::close(void)
{
::arts_close_stream(stream_rep);
AUDIO_IO::close();
}
void ARTS_INTERFACE::start(void)
{
AUDIO_IO_DEVICE::start();
}
long int ARTS_INTERFACE::read_samples(void* target_buffer,
long int samples)
{
long int res = ::arts_read(stream_rep, target_buffer, frame_size() * samples);
if (res >= 0) {
return(res / frame_size());
}
else {
return(0);
}
}
void ARTS_INTERFACE::write_samples(void* target_buffer,
long int samples)
{
::arts_write(stream_rep, target_buffer, frame_size() * samples);
}
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