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/*
* ReplayGainAnalysis - analyzes input samples and give the recommended dB change
* Copyright (C) 2001-2009 David Robinson and Glen Sawyer
*
* This library 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 library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* concept and filter values by David Robinson (David@Robinson.org)
* -- blame him if you think the idea is flawed
* coding by Glen Sawyer (mp3gain@hotmail.com) 735 W 255 N, Orem, UT 84057-4505 USA
* -- blame him if you think this runs too slowly, or the coding is otherwise flawed
*
* For an explanation of the concepts and the basic algorithms involved, go to:
* http://www.replaygain.org/
*/
/*
modifications compared to original code:
added full reentrancy support
fixed gcc warnings
*/
#ifndef GAIN_ANALYSIS_H
#define GAIN_ANALYSIS_H
#include <stddef.h>
#define GAIN_NOT_ENOUGH_SAMPLES -24601
#define GAIN_ANALYSIS_ERROR 0
#define GAIN_ANALYSIS_OK 1
#define INIT_GAIN_ANALYSIS_ERROR 0
#define INIT_GAIN_ANALYSIS_OK 1
#ifdef __cplusplus
extern "C" {
#endif
//struct GainStructure;
typedef double Float_t; // Type used for filtering
typedef struct GainHandle GainHandle_t;
int InitGainAnalysis (GainHandle_t **handle, long samplefreq);
int AnalyzeSamples (GainHandle_t *handle, const Float_t* left_samples, const Float_t* right_samples, size_t num_samples, int num_channels);
int ResetSampleFrequency (GainHandle_t *handle, long samplefreq);
Float_t GetTitleGain(GainHandle_t *handle);
Float_t GetAlbumGain(GainHandle_t **handle, int count);
void DeinitGainAnalysis(GainHandle_t *handle);
#ifdef __cplusplus
}
#endif
#endif /* GAIN_ANALYSIS_H */
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