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/*
* C S O U N D
*
* L I C E N S E
*
* This software is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "Soundfile.hpp"
#include <csound.h>
#include <complex>
namespace csound
{
#ifndef PI
#define PI (3.14159265358979323846)
#endif
#ifndef TWOPI
#define TWOPI (6.28318530717958647692)
#endif
Soundfile::Soundfile()
{
initialize();
}
Soundfile::~Soundfile()
{
close();
}
void Soundfile::initialize()
{
sndfile = 0;
std::memset(&sf_info, 0, sizeof(sf_info));
}
int Soundfile::getFramesPerSecond() const
{
return sf_info.samplerate;
}
void Soundfile::setFramesPerSecond(int framesPerSecond)
{
sf_info.samplerate = framesPerSecond;
}
int Soundfile::getChannelsPerFrame() const
{
return sf_info.channels;
}
void Soundfile::setChannelsPerFrame(int channelsPerFrame)
{
sf_info.channels = channelsPerFrame;
}
int Soundfile::getFormat() const
{
return sf_info.format;
}
void Soundfile::setFormat(int format)
{
sf_info.format = format;
}
int Soundfile::getFrames() const
{
return (int) sf_info.frames;
}
int Soundfile::open(std::string filename)
{
close();
sndfile = sf_open(filename.c_str(), SFM_RDWR, &sf_info);
if (!sndfile) {
error();
return -1;
}
return 0;
}
int Soundfile::create(std::string filename, int framesPerSecond, int channelsPerFrame, int format)
{
close();
sf_info.samplerate = framesPerSecond;
sf_info.channels = channelsPerFrame;
sf_info.format = format;
sndfile = sf_open(filename.c_str(), SFM_RDWR, &sf_info);
if (!sndfile) {
error();
return -1;
}
return 0;
}
int Soundfile::seek(int frames, int whence)
{
int frame = sf_seek(sndfile, frames, whence);
if (frame == -1) {
error();
}
return frame;
}
double Soundfile::seekSeconds(double seconds, int whence)
{
int frame = int(seconds * double(sf_info.samplerate));
frame = sf_seek(sndfile, frame, whence);
if (frame == -1) {
error();
}
return frame;
}
int Soundfile::readFrame(double *outputFrame)
{
return sf_readf_double(sndfile, outputFrame, 1);
}
int Soundfile::writeFrame(double *inputFrame)
{
return sf_writef_double(sndfile, inputFrame, 1);
}
int Soundfile::readFrames(double *outputFrames, int samples)
{
return sf_read_double(sndfile, outputFrames, samples);
}
int Soundfile::writeFrames(double *inputFrames, int samples)
{
return sf_write_double(sndfile, inputFrames, samples);
}
int Soundfile::mixFrames(double *inputFrames, int samples, double *mixedFrames)
{
size_t position = sf_seek(sndfile, 0, SEEK_CUR);
sf_readf_double(sndfile, mixedFrames, samples);
for (int i = 0; i < samples; i++) {
mixedFrames[i] += inputFrames[i];
}
sf_seek(sndfile, position, SEEK_SET);
return sf_writef_double(sndfile, mixedFrames, samples);
}
void Soundfile::updateHeader()
{
/* int status = */ sf_command(sndfile, SFC_UPDATE_HEADER_NOW, 0, 0);
}
int Soundfile::close()
{
int status = 0;
if (sndfile) {
status = sf_close(sndfile);
if (status) {
std::cerr << sf_error_number(status) << std::endl;
}
}
initialize();
return status;
}
void Soundfile::error() const
{
std::cerr << sf_strerror(sndfile) << std::endl;
}
void Soundfile::blank(double duration)
{
seekSeconds(0.0);
std::vector<double> frame;
frame.resize(getChannelsPerFrame());
int framesToWrite = int(duration * getFramesPerSecond());
for (int i = 0; i < framesToWrite; i++) {
sf_writef_double(sndfile, &frame.front(), 1);
}
updateHeader();
seekSeconds(0.0);
}
}
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