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// ------------------------------------------------------------------------
// audioio-proxy.cpp: Generic interface for objects that act as
// proxies for other objects of type AUDIO_IO.
// Copyright (C) 2002,2005,2008,2011 Kai Vehmanen
//
// Attributes:
// eca-style-version: 3
//
// 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 <kvu_dbc.h>
#include "samplebuffer.h"
#include "audioio-null.h"
#include "audioio-proxy.h"
AUDIO_IO_PROXY::AUDIO_IO_PROXY(void)
: buffersize_rep(0),
child_initialized_rep(false)
{
child_repp = new NULLFILE("uninitialized proxy child");
}
AUDIO_IO_PROXY::~AUDIO_IO_PROXY(void)
{
delete child_repp; // either null or the actual child object
}
/**
* Sets a new proxy target object. The old
* target (if any) is deleted.
*/
void AUDIO_IO_PROXY::set_child(AUDIO_IO* v)
{
if (child_repp != 0)
delete child_repp;
child_repp = v;
child_initialized_rep = true;
}
/**
* Releases the current child without deleting Itx.
*/
void AUDIO_IO_PROXY::release_child_no_delete(void)
{
child_repp = new NULLFILE("uninitialized proxy child");
child_initialized_rep = false;
}
/**
* Prepares child object for opening.
*
* Sets the audio objects parameters, which have an effect
* at open time, to those of the parent object.
*/
void AUDIO_IO_PROXY::pre_child_open(void)
{
child()->set_buffersize(buffersize());
child()->set_io_mode(io_mode());
child()->set_audio_format(audio_format());
child()->set_samples_per_second(samples_per_second());
}
/**
* Checks if any audio parameters were changed
* during child's open(), fetches any changes and
* sets the object length.
*/
void AUDIO_IO_PROXY::post_child_open(void)
{
if (child()->locked_audio_format() == true) {
set_audio_format(child()->audio_format());
}
set_length_in_samples(child()->length_in_samples());
}
void AUDIO_IO_PROXY::set_buffersize(long int samples)
{
buffersize_rep = samples;
child_repp->set_buffersize(samples);
}
void AUDIO_IO_PROXY::set_channels(SAMPLE_SPECS::channel_t v)
{
AUDIO_IO::set_channels(v);
child_repp->set_channels(v);
}
void AUDIO_IO_PROXY::set_sample_format(Sample_format v) throw(ECA_ERROR&)
{
AUDIO_IO::set_sample_format(v);
child_repp->set_sample_format(v);
}
void AUDIO_IO_PROXY::set_audio_format(const ECA_AUDIO_FORMAT& f_str)
{
AUDIO_IO::set_audio_format(f_str);
child_repp->set_audio_format(f_str);
}
void AUDIO_IO_PROXY::toggle_interleaved_channels(bool v)
{
AUDIO_IO::toggle_interleaved_channels(v);
child_repp->toggle_interleaved_channels(v);
}
void AUDIO_IO_PROXY::set_samples_per_second(SAMPLE_SPECS::sample_rate_t v)
{
AUDIO_IO::set_samples_per_second(v);
child_repp->set_samples_per_second(v);
}
std::string AUDIO_IO_PROXY::parameter_names(void) const
{
return child_repp->parameter_names();
}
void AUDIO_IO_PROXY::set_parameter(int param, std::string value)
{
AUDIO_IO::set_parameter(param, value);
child_repp->set_parameter(param, value);
}
std::string AUDIO_IO_PROXY::get_parameter(int param) const
{
return child_repp->get_parameter(param);
}
void AUDIO_IO_PROXY::start_io(void)
{
AUDIO_IO_BARRIER *barrier
= dynamic_cast<AUDIO_IO_BARRIER*>(child_repp);
if (barrier)
barrier->start_io();
}
void AUDIO_IO_PROXY::stop_io(void)
{
AUDIO_IO_BARRIER *barrier
= dynamic_cast<AUDIO_IO_BARRIER*>(child_repp);
if (barrier)
barrier->stop_io();
}
std::string AUDIO_IO_PROXY::child_params_as_string(int first, std::vector<std::string>* params)
{
int last = params->size();
string res;
for (int n = first; n <= last; n++) {
std::string v = get_parameter(n);
/* note: as we are passing a filename plus optional params, we
* need to escape any commans in the filename */
if (v.find(",") != string::npos)
v = "\"" + v + "\"";
res += v;
if (n != last)
res += ",";
}
return res;
}
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