mirror of
https://github.com/DrBeef/JKXR.git
synced 2024-12-11 21:21:47 +00:00
4597b03873
Opens in Android Studio but haven't even tried to build it yet (it won't.. I know that much!)
106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*-
|
|
* Copyright (c) 2005 Boris Mikhaylov
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef BS2B_H
|
|
#define BS2B_H
|
|
|
|
/* Number of crossfeed levels */
|
|
#define BS2B_CLEVELS 3
|
|
|
|
/* Normal crossfeed levels */
|
|
#define BS2B_HIGH_CLEVEL 3
|
|
#define BS2B_MIDDLE_CLEVEL 2
|
|
#define BS2B_LOW_CLEVEL 1
|
|
|
|
/* Easy crossfeed levels */
|
|
#define BS2B_HIGH_ECLEVEL BS2B_HIGH_CLEVEL + BS2B_CLEVELS
|
|
#define BS2B_MIDDLE_ECLEVEL BS2B_MIDDLE_CLEVEL + BS2B_CLEVELS
|
|
#define BS2B_LOW_ECLEVEL BS2B_LOW_CLEVEL + BS2B_CLEVELS
|
|
|
|
/* Default crossfeed levels */
|
|
#define BS2B_DEFAULT_CLEVEL BS2B_HIGH_ECLEVEL
|
|
/* Default sample rate (Hz) */
|
|
#define BS2B_DEFAULT_SRATE 44100
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
struct bs2b {
|
|
int level; /* Crossfeed level */
|
|
int srate; /* Sample rate (Hz) */
|
|
|
|
/* Lowpass IIR filter coefficients */
|
|
double a0_lo;
|
|
double b1_lo;
|
|
|
|
/* Highboost IIR filter coefficients */
|
|
double a0_hi;
|
|
double a1_hi;
|
|
double b1_hi;
|
|
|
|
/* Global gain against overloading */
|
|
float gain;
|
|
|
|
/* Buffer of last filtered sample.
|
|
* [0] - first channel, [1] - second channel
|
|
*/
|
|
struct t_last_sample {
|
|
double asis[2];
|
|
double lo[2];
|
|
double hi[2];
|
|
} last_sample;
|
|
};
|
|
|
|
/* Clear buffers and set new coefficients with new crossfeed level value.
|
|
* level - crossfeed level of *LEVEL values.
|
|
*/
|
|
void bs2b_set_level(struct bs2b *bs2b, int level);
|
|
|
|
/* Return current crossfeed level value */
|
|
int bs2b_get_level(struct bs2b *bs2b);
|
|
|
|
/* Clear buffers and set new coefficients with new sample rate value.
|
|
* srate - sample rate by Hz.
|
|
*/
|
|
void bs2b_set_srate(struct bs2b *bs2b, int srate);
|
|
|
|
/* Return current sample rate value */
|
|
int bs2b_get_srate(struct bs2b *bs2b);
|
|
|
|
/* Clear buffer */
|
|
void bs2b_clear(struct bs2b *bs2b);
|
|
|
|
/* Crossfeeds one stereo sample that are pointed by sample.
|
|
* [0] - first channel, [1] - second channel.
|
|
* Returns crossfided samle by sample pointer.
|
|
*/
|
|
|
|
/* sample poits to floats */
|
|
void bs2b_cross_feed(struct bs2b *bs2b, float *sample);
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif /* __cplusplus */
|
|
|
|
#endif /* BS2B_H */
|