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/*
cw_binaural~: a binaural synthesis external for pure data
by David Doukhan - david.doukhan@gmail.com - http://perso.limsi.fr/doukhan
and Anne Sedes - sedes.anne@gmail.com
Copyright (C) 2009-2011 David Doukhan and Anne Sedes
For more details, see CW_binaural~, a binaural synthesis external for Pure Data
David Doukhan and Anne Sedes, PDCON09
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef IR_KEY_HPP_
# define IR_KEY_HPP_
# include <string>
using namespace std;
// this structure is aimed at identifying
// a requested impulse response set
// that will be use as it
typedef struct s_ir_key
{
// TODO
// * add ITD computation method!!
// * add resampling options
// tells if we want a minphase/allpass decomposition
// having this options set to true implies more computations
// and a better hrtf interpolation
bool minp_ap_dec;
// tells whether we want to use the impulse response
// in the frequency domain or in the time domain
bool spectral;
// the length of the considered impulse response
size_t length;
// the path to the directory storing the set of impulse responses
string path;
// the regex that should match the name of valid IR files
// contains 2 groups corresponding to the azimuth and elevation
// composing the sound file name
string iir_regex;
// set to true if the azimuth is in the first group of iir_regex
// false if the elevation is first
bool is_azimuth_first;
// set to true in the db is indexed in vertical-polar coordinates
// set to false if the db is indexed in interaural-polar_coordinates
bool vertical_polar_coords;
// constructor init the structure fields to default values
s_ir_key(): minp_ap_dec(false),
spectral(false),
length(0),
path(""),
iir_regex(""),
is_azimuth_first(true),
vertical_polar_coords(true) {}
} ir_key;
// The impulse response key comparison function
// returns true if its first argument is less than its second argument,
// and false otherwise
// it is necessary to index ir_key into sorted containers (map, etc...)
class ir_key_isless
{
public:
bool operator() (const ir_key& a, const ir_key& b);
};
#endif
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