src/audio/esd/SDL_esdaudio.h
author Cameron Gutman
Sun, 24 Jan 2021 17:19:48 -0600
changeset 14796 e9b56cbc004d
parent 14640 b2b3343a310d
permissions -rw-r--r--
wayland: cancel key repeat when keyboard focus is lost

SDL_SetKeyboardFocus(NULL) will lift any keys still pressed when keyboard focus
leaves the window, but then key repeat comes behind our backs and presses the
key down again. This results in an infinite stream of SDL_KEYDOWN events when
focus leaves the window with a key down (particularly noticeable with Alt+Tab).
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 #ifndef SDL_esdaudio_h_
    24 #define SDL_esdaudio_h_
    25 
    26 #include "../SDL_sysaudio.h"
    27 
    28 /* Hidden "this" pointer for the audio functions */
    29 #define _THIS   SDL_AudioDevice *this
    30 
    31 struct SDL_PrivateAudioData
    32 {
    33     /* The file descriptor for the audio device */
    34     int audio_fd;
    35 
    36     /* The parent process id, to detect when application quits */
    37     pid_t parent;
    38 
    39     /* Raw mixing buffer */
    40     Uint8 *mixbuf;
    41     int mixlen;
    42 
    43     /* Support for audio timing using a timer */
    44     float frame_ticks;
    45     float next_frame;
    46 };
    47 #define FUDGE_TICKS 10      /* The scheduler overhead ticks per frame */
    48 
    49 #endif /* SDL_esdaudio_h_ */
    50 
    51 /* vi: set ts=4 sw=4 expandtab: */