mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-10 03:15:41 +01:00
3bf8e79c3b
The local header file named as "signal.h" causes mysterious compile error when built with an old glibc. signal.h:27: error: conflicting types for 'sin_generator_init' ./signal.h:27: error: previous declaration of 'sin_generator_init' was here signal.h:28: error: conflicting types for 'sin_generator_next_sample' ./signal.h:28: error: previous declaration of 'sin_generator_next_sample' was here .... This turned out to be the conflict of signal.h; namely, pthread.h that is included before our local signal.h also includes "pthread.h". Since our local "signal.h" has a higher priority, it gets loaded instead of the expected pthread's one. Then we load it again, and it screws up. Although it's basically a bug of pthread, it's anyway not good to have a header file conflicting with the standard header file. So, let's name it more explicitly as specific to BAT, bat-signal.h, for avoiding such a conflict. Signed-off-by: Takashi Iwai <tiwai@suse.de>
30 lines
1.2 KiB
C
30 lines
1.2 KiB
C
/*
|
|
* Copyright (C) 2015 Caleb Crome
|
|
* Copyright (C) 2013-2015 Intel Corporation
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Here's a generic sine wave generator that will work indefinitely
|
|
* for any frequency.
|
|
*
|
|
* Note: the state & phasor are stored as doubles (and updated as
|
|
* doubles) because after a million samples the magnitude drifts a
|
|
* bit. If we really need floats, it can be done with periodic
|
|
* renormalization of the state_real+state_imag magnitudes.
|
|
*/
|
|
|
|
int sin_generator_init(struct sin_generator *, float, float, float);
|
|
float sin_generator_next_sample(struct sin_generator *);
|
|
void sin_generator_vfill(struct sin_generator *, float *, int);
|
|
int generate_sine_wave(struct bat *, int, void *);
|