Mercurial > sdl-ios-xcode
annotate src/audio/dma/SDL_dmaaudio.h @ 4068:86746036a6d6 SDL-1.2
I think this fixes bug #454
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 15 Jul 2007 14:05:31 +0000 |
| parents | d910939febfa |
| children | 782fd950bd46 a1b03ba2fcd0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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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 | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
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 | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
13 Lesser General Public License for more details. |
| 0 | 14 |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
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
diff
changeset
|
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:
769
diff
changeset
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
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20 slouken@libsdl.org |
| 0 | 21 */ |
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1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
1361
diff
changeset
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 #ifndef _SDL_dspaudio_h | |
| 25 #define _SDL_dspaudio_h | |
| 26 | |
|
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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27 #include "../SDL_sysaudio.h" |
| 0 | 28 |
| 29 /* Hidden "this" pointer for the video functions */ | |
| 30 #define _THIS SDL_AudioDevice *this | |
| 31 | |
| 32 struct SDL_PrivateAudioData { | |
| 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 *dma_buf; | |
| 41 int dma_len; | |
| 42 int num_buffers; | |
| 43 | |
| 44 /* Support for audio timing using a timer, in addition to select() */ | |
| 45 float frame_ticks; | |
| 46 float next_frame; | |
| 47 }; | |
| 48 #define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */ | |
| 49 | |
| 50 /* Old variable names */ | |
| 51 #define audio_fd (this->hidden->audio_fd) | |
| 52 #define parent (this->hidden->parent) | |
| 53 #define dma_buf (this->hidden->dma_buf) | |
| 54 #define dma_len (this->hidden->dma_len) | |
| 55 #define num_buffers (this->hidden->num_buffers) | |
| 56 #define frame_ticks (this->hidden->frame_ticks) | |
| 57 #define next_frame (this->hidden->next_frame) | |
| 58 | |
| 59 #endif /* _SDL_dspaudio_h */ |