author Ryan C. Gordon <>
Sun, 29 Mar 2020 01:54:00 -0400
changeset 13678 682e469ffeed
parent 13422 fd6a12de91c7
permissions -rw-r--r--
coreaudio: The default SDL audio device now tracks the system output default.

So if you go into System Preferences on a MacBook and toggle between a pair of
connected bluetooth headphones and built-in internal speakers, SDL will
switch the device it is playing sound through, to match this setting, on the

Likewise if the default output device is a USB thing and is unplugged; as the
default device changes at the system level, SDL will pick this up and carry
on with the new default. This is different from our unplug detection for
specific devices, as in those cases we want to send the app a disconnect
notification, instead of migrating transparently as we now do for default

Note that this should also work for capture devices; if the device changes,
SDL will start recording from the new default.

Fixes Bugzilla #4851.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2020 Sam Lantinga <>
     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.
     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:
    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"
    25 /* Being a null driver, there's no event stream. We just define stubs for
    26    most of the API. */
    28 #include "../../events/SDL_events_c.h"
    30 #include "SDL_nullvideo.h"
    31 #include "SDL_nullevents_c.h"
    33 void
    34 DUMMY_PumpEvents(_THIS)
    35 {
    36     /* do nothing. */
    37 }
    39 #endif /* SDL_VIDEO_DRIVER_DUMMY */
    41 /* vi: set ts=4 sw=4 expandtab: */