87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
// ------------------------------------------------------------------------
|
|
// audiofx.cpp: General effect processing routines.
|
|
// Copyright (C) 1999-2002,2004,2006,2008 Kai Vehmanen
|
|
//
|
|
// Attributes:
|
|
// eca-style-version: 3 (see Ecasound Programmer's Guide)
|
|
//
|
|
// 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 <kvu_numtostr.h>
|
|
|
|
#include "sample-specs.h"
|
|
#include "samplebuffer.h"
|
|
#include "audiofx.h"
|
|
#include "eca-logger.h"
|
|
|
|
EFFECT_BASE::EFFECT_BASE(void)
|
|
: channels_rep(0)
|
|
{
|
|
}
|
|
|
|
EFFECT_BASE::~EFFECT_BASE(void)
|
|
{
|
|
}
|
|
|
|
void EFFECT_BASE::init(SAMPLE_BUFFER* sbuf)
|
|
{
|
|
ECA_LOG_MSG(ECA_LOGGER::user_objects,
|
|
"Init w/ samplerate " +
|
|
kvu_numtostr(samples_per_second()) + " for object " +
|
|
name() + ".");
|
|
|
|
set_channels(sbuf->number_of_channels());
|
|
|
|
DBC_CHECK(channels() > 0);
|
|
DBC_CHECK(samples_per_second() > 0);
|
|
}
|
|
|
|
int EFFECT_BASE::channels(void) const
|
|
{
|
|
return channels_rep;
|
|
}
|
|
|
|
void EFFECT_BASE::set_samples_per_second(SAMPLE_SPECS::sample_rate_t new_rate)
|
|
{
|
|
ECA_LOG_MSG(ECA_LOGGER::user_objects,
|
|
"Setting samplerate to " +
|
|
kvu_numtostr(new_rate) + " for object " +
|
|
name() + ". Old value " +
|
|
kvu_numtostr(samples_per_second()) + ".");
|
|
|
|
/* note: changing the sample rate might change values of
|
|
* of parameters, so we want to preserve the values */
|
|
|
|
if (samples_per_second() != new_rate) {
|
|
std::vector<parameter_t> old_values (number_of_params());
|
|
for(int n = 0; n < number_of_params(); n++) {
|
|
old_values[n] = get_parameter(n + 1);
|
|
}
|
|
|
|
ECA_SAMPLERATE_AWARE::set_samples_per_second(new_rate);
|
|
|
|
for(int n = 0; n < number_of_params(); n++) {
|
|
set_parameter(n + 1, old_values[n]);
|
|
}
|
|
}
|
|
}
|
|
|
|
void EFFECT_BASE::set_channels(int v)
|
|
{
|
|
channels_rep = v;
|
|
}
|