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// ------------------------------------------------------------------------
// audioio-ewf.cpp: Ecasound wave format input/output
// Copyright (C) 1999-2002,2005,2008 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 <algorithm>
#include <string>
#include <vector>
#include <iostream>
#include <fstream>
#include <cmath>
#include <kvu_message_item.h>
#include <kvu_numtostr.h>
#include <kvu_dbc.h>
#include "eca-object-factory.h"
#include "samplebuffer.h"
#include "audioio-ewf.h"
#include "eca-error.h"
#include "eca-logger.h"
using std::cout;
using std::endl;
using SAMPLE_SPECS::sample_pos_t;
/**
* FIXME notes (last update 2008-03-09)
*
* - Add (more) sanity checks for ewf fields.
*/
EWFFILE::EWFFILE (void)
{
}
EWFFILE::~EWFFILE(void)
{
}
EWFFILE* EWFFILE::clone(void) const
{
EWFFILE* target = new EWFFILE();
for(int n = 0; n < number_of_params(); n++) {
target->set_parameter(n + 1, get_parameter(n + 1));
}
return target;
}
void EWFFILE::open(void) throw(AUDIO_IO::SETUP_ERROR &)
{
if (io_mode() != AUDIO_IO::io_read)
ECA_LOG_MSG(ECA_LOGGER::info,
"WARNING: Writing to EWF files is a deprecated feature since 2.4.7 (2008), and it will be disabled in a future release.");
ewf_rc.resource_file(label());
ewf_rc.load();
read_ewf_data();
AUDIO_SEQUENCER_BASE::open();
}
void EWFFILE::close(void)
{
if (io_mode() != AUDIO_IO::io_read)
write_ewf_data();
AUDIO_SEQUENCER_BASE::close();
}
void EWFFILE::init_default_child(void) throw(ECA_ERROR&)
{
string::const_iterator e = std::find(label().begin(), label().end(), '.');
if (e == label().end()) {
throw(ECA_ERROR("AUDIOIO-EWF", "Invalid file name; unable to open file.",ECA_ERROR::retry));
}
string child_name (label().begin(), e);
child_name += ".wav";
set_child_object_string(child_name);
DBC_CHECK(child_name == child_object_string());
ewf_rc.resource("source", child_object_string());
}
void EWFFILE::read_ewf_data(void) throw(ECA_ERROR&)
{
if (ewf_rc.has("source"))
set_child_object_string(ewf_rc.resource("source"));
else
init_default_child();
if (ewf_rc.has("offset")) {
set_child_offset(ECA_AUDIO_TIME(ewf_rc.resource("offset")));
}
else
set_child_offset(ECA_AUDIO_TIME());
/* FIXME: doesn't work, if child has different srate and start-pos
* specified in samples, the result is incorrect! */
if (ewf_rc.has("start-position")) {
set_child_start_position(ECA_AUDIO_TIME(ewf_rc.resource("start-position")));
}
else
set_child_start_position(ECA_AUDIO_TIME());
if (ewf_rc.has("length")) {
set_child_length(ECA_AUDIO_TIME(ewf_rc.resource("length")));
}
toggle_looping(ewf_rc.boolean_resource("looping"));
const std::vector<std::string> keys = ewf_rc.keywords();
std::vector<std::string>::const_iterator p = keys.begin();
while(p != keys.end()) {
if (*p != "source" &&
*p != "offset" &&
*p != "start-position" &&
*p != "length" &&
*p != "looping")
ECA_LOG_MSG(ECA_LOGGER::info,
"WARNING: Unknown keyword '"
+ *p
+ "' in EWF file '"
+ label()
+ "'.");
++p;
}
}
void EWFFILE::write_ewf_data(void)
{
ewf_rc.resource("source", child_object_string());
if (child_offset().samples() > 0)
ewf_rc.resource("offset", kvu_numtostr(child_offset().seconds(),6));
if (child_start_position().samples() != 0)
ewf_rc.resource("start-position", kvu_numtostr(child_start_position().seconds(), 6));
if (child_looping() == true)
ewf_rc.resource("looping","true");
if (child_length().valid() == true)
ewf_rc.resource("length", kvu_numtostr(child_length().seconds(), 6));
ewf_rc.save();
}
std::string EWFFILE::parameter_names(void) const
{
return AUDIO_IO::parameter_names();
}
void EWFFILE::set_parameter(int param, std::string value)
{
AUDIO_IO::set_parameter(param, value);
}
std::string EWFFILE::get_parameter(int param) const
{
return AUDIO_IO::get_parameter(param);
}
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