267 lines
6.6 KiB
C++
267 lines
6.6 KiB
C++
// ------------------------------------------------------------------------
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// audiofx_misc.cpp: Miscellanous effect processing routines.
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// Copyright (C) 1999-2003,2005 Kai Vehmanen
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//
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// Attributes:
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// eca-style-version: 3
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// ------------------------------------------------------------------------
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#include <iostream>
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#include <cmath>
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#include <kvu_dbc.h>
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#include <kvu_numtostr.h>
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#include <kvu_utils.h>
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#include "samplebuffer_iterators.h"
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#include "eca-operator.h"
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#include "audiofx_misc.h"
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#include "eca-logger.h"
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#include "eca-error.h"
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EFFECT_DCFIX::EFFECT_DCFIX (void)
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{
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}
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EFFECT_DCFIX::EFFECT_DCFIX (const EFFECT_DCFIX& x)
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{
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deltafixes_rep = x.deltafixes_rep;
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i_rep = x.i_rep;
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}
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void EFFECT_DCFIX::set_parameter(int param, CHAIN_OPERATOR::parameter_t value)
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{
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if (param == 1) {
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deltafixes_rep.resize(static_cast<int>(value));
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}
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else if (param > 1 && param - 2 < static_cast<int>(deltafixes_rep.size())) {
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deltafixes_rep[param - 2] = value;
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}
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}
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CHAIN_OPERATOR::parameter_t EFFECT_DCFIX::get_parameter(int param) const
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{
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parameter_t result = 0.0f;
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if (param == 1) {
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result = static_cast<parameter_t>(deltafixes_rep.size());
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}
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else if (param > 1 && param - 2 < static_cast<int>(deltafixes_rep.size())) {
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result = deltafixes_rep[param - 2];
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}
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return result;
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}
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string EFFECT_DCFIX::parameter_names(void) const
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{
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std::vector<std::string> t;
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t.push_back("channel-count");
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for(int n = 0; n < static_cast<int>(deltafixes_rep.size()); n++) {
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t.push_back("delta-ch" + kvu_numtostr(n + 1));
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}
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return kvu_vector_to_string(t, ",");
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}
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void EFFECT_DCFIX::parameter_description(int param, struct PARAM_DESCRIPTION *pd) const
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{
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OPERATOR::parameter_description(param, pd);
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}
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void EFFECT_DCFIX::init(SAMPLE_BUFFER *insample)
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{
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i_rep.init(insample);
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set_channels(insample->number_of_channels());
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if (channels() > static_cast<int>(deltafixes_rep.size())) {
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deltafixes_rep.resize(channels());
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}
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}
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void EFFECT_DCFIX::process(void)
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{
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for(int n = 0; n < channels(); n++) {
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i_rep.begin(n);
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while(!i_rep.end()) {
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*i_rep.current() = *i_rep.current() + deltafixes_rep[n];
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i_rep.next();
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}
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}
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}
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const int EFFECT_PITCH_SHIFT::resample_low_limit = 8;
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EFFECT_PITCH_SHIFT::EFFECT_PITCH_SHIFT (const EFFECT_PITCH_SHIFT& x)
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{
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pmod_rep = x.pmod_rep;
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target_rate_rep = x.target_rate_rep;
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sbuf_repp = 0;
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}
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void EFFECT_PITCH_SHIFT::set_parameter(int param, CHAIN_OPERATOR::parameter_t value)
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{
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switch (param) {
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case 1:
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double lowlimit = 1.0f / EFFECT_PITCH_SHIFT::resample_low_limit * 100.0f;
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if (value <= lowlimit) {
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ECA_LOG_MSG(ECA_LOGGER::info,
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"WARNING! Shift-% must be greater than " +
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kvu_numtostr(lowlimit) +
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"%! Limiting to the low-limit.");
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pmod_rep = lowlimit;
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}
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else {
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pmod_rep = value;
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}
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if (sbuf_repp != 0) {
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target_rate_rep = static_cast<long int>(samples_per_second() * 100.0 / pmod_rep);
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}
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else {
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target_rate_rep = 0;
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}
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break;
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}
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}
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CHAIN_OPERATOR::parameter_t EFFECT_PITCH_SHIFT::get_parameter(int param) const
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{
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switch (param) {
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case 1:
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return pmod_rep;
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}
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return 0.0;
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}
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void EFFECT_PITCH_SHIFT::parameter_description(int param, struct PARAM_DESCRIPTION *pd) const
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{
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OPERATOR::parameter_description(param, pd);
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switch(param)
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{
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case 1:
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pd->default_value = 100.0f;
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pd->bounded_above = true;
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/* 100x speed-up is a sensible upper limit */
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pd->upper_bound = 10000.0f;
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pd->bounded_below = true;
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/* ~8x slow-down is a sensible lower limit: */
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pd->lower_bound = 1.0f / EFFECT_PITCH_SHIFT::resample_low_limit * 100.0f;
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break;
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}
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}
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void EFFECT_PITCH_SHIFT::init(SAMPLE_BUFFER *insample)
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{
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sbuf_repp = insample;
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// truncate, not round, to integer
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target_rate_rep = static_cast<long int>((samples_per_second() * 100.0 / pmod_rep));
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long int lowlimit = sbuf_repp->length_in_samples() * EFFECT_PITCH_SHIFT::resample_low_limit;
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sbuf_repp->reserve_length_in_samples(lowlimit);
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ECA_LOG_MSG(ECA_LOGGER::system_objects,
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"Setting resampling lowlimit to " +
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kvu_numtostr(lowlimit) + " bytes.");
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sbuf_repp->resample_init_memory(samples_per_second(), target_rate_rep);
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sbuf_repp->resample_set_quality(50);
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ECA_LOG_MSG(ECA_LOGGER::user_objects, "Resampling from " +
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kvu_numtostr(samples_per_second()) +
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" to " +
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kvu_numtostr(target_rate_rep) + ".");
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}
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void EFFECT_PITCH_SHIFT::release(void)
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{
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sbuf_repp = 0;
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}
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void EFFECT_PITCH_SHIFT::process(void)
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{
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sbuf_repp->resample(samples_per_second(), target_rate_rep);
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}
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long int EFFECT_PITCH_SHIFT::max_output_samples(long int i_samples) const
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{
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DBC_CHECK(sbuf_repp != 0);
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return static_cast<long int>(static_cast<double>(target_rate_rep) /
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samples_per_second() *
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i_samples);
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}
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EFFECT_AUDIO_STAMP::EFFECT_AUDIO_STAMP(void)
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: sbuf_repp(0)
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{
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}
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EFFECT_AUDIO_STAMP::EFFECT_AUDIO_STAMP(const EFFECT_AUDIO_STAMP& arg)
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: sbuf_repp(0)
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{
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}
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void EFFECT_AUDIO_STAMP::set_parameter(int param, CHAIN_OPERATOR::parameter_t value)
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{
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switch (param) {
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case 1:
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set_id(static_cast<int>(value));
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break;
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}
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}
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CHAIN_OPERATOR::parameter_t EFFECT_AUDIO_STAMP::get_parameter(int param) const
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{
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switch (param) {
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case 1:
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return static_cast<parameter_t>(id());
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}
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return 0.0;
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}
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void EFFECT_AUDIO_STAMP::parameter_description(int param, struct PARAM_DESCRIPTION *pd) const
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{
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OPERATOR::parameter_description(param, pd);
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switch(param)
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{
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case 1:
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pd->default_value = 1;
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pd->description = get_parameter_name(param);
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pd->bounded_above = false;
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pd->bounded_below = true;
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pd->lower_bound = 1;
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pd->integer = true;
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break;
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}
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}
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void EFFECT_AUDIO_STAMP::init(SAMPLE_BUFFER *insample)
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{
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sbuf_repp = insample;
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}
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void EFFECT_AUDIO_STAMP::release(void)
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{
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sbuf_repp = 0;
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}
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void EFFECT_AUDIO_STAMP::process(void)
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{
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store(sbuf_repp);
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// std::cerr << "Storing audio stamp with id " << id() << "." << std::endl;
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}
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