Mercurial > sdl-ios-xcode
annotate src/audio/arts/SDL_artsaudio.h @ 1798:49b4b8413734
Date: Tue, 9 May 2006 23:01:49 -0400
From: Mike Frysinger
Subject: [SDL] [patch] fall back to using MAP_PRIVATE with mmap() in fbcon dri
trying to use MAP_SHARED with mmap() on uClinux (aka non-mmu) hosts nowadays
will simply fail since the kernel disallows it ... falling back to using
MAP_PRIVATE on these hosts is acceptable ... as such, ive attached a patch
for the fbcon driver that will fall back to using MAP_PRIVATE if mmap() with
MAP_SHARED failed
going by a grep of MAP_SHARED, the only other drivers that utilize this flag
are video/wscons, video/ps2gs, and sound/dmaaudio ... i dont think these
would appear on a non-mmu host so the patch i wrote is restricted to just
SDL_fbvideo.c ...
-mike
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 10 May 2006 04:05:46 +0000 |
| parents | d910939febfa |
| children | 782fd950bd46 a1b03ba2fcd0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
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16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 #ifndef _SDL_artscaudio_h | |
| 25 #define _SDL_artscaudio_h | |
| 26 | |
| 27 #include <artsc.h> | |
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New configure-based build system. Still work in progress, but much improved
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28 |
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New configure-based build system. Still work in progress, but much improved
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29 #include "../SDL_sysaudio.h" |
| 0 | 30 |
| 31 /* Hidden "this" pointer for the video functions */ | |
| 32 #define _THIS SDL_AudioDevice *this | |
| 33 | |
| 34 struct SDL_PrivateAudioData { | |
| 35 /* The stream descriptor for the audio device */ | |
| 36 arts_stream_t stream; | |
| 37 | |
| 38 /* The parent process id, to detect when application quits */ | |
| 39 pid_t parent; | |
| 40 | |
| 41 /* Raw mixing buffer */ | |
| 42 Uint8 *mixbuf; | |
| 43 int mixlen; | |
| 44 | |
| 45 /* Support for audio timing using a timer, in addition to select() */ | |
| 46 float frame_ticks; | |
| 47 float next_frame; | |
| 48 }; | |
| 49 #define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */ | |
| 50 | |
| 51 /* Old variable names */ | |
| 52 #define stream (this->hidden->stream) | |
| 53 #define parent (this->hidden->parent) | |
| 54 #define mixbuf (this->hidden->mixbuf) | |
| 55 #define mixlen (this->hidden->mixlen) | |
| 56 #define frame_ticks (this->hidden->frame_ticks) | |
| 57 #define next_frame (this->hidden->next_frame) | |
| 58 | |
| 59 #endif /* _SDL_artscaudio_h */ | |
| 60 |