Mercurial > sdl-ios-xcode

annotate src/audio/nto/SDL_nto_audio.h @ 2938:2929ed239d2a

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Adjusted default choice of audio driver. If a driver can definitely see available devices, it is chosen. Otherwise, we'll take the first driver that initializes but saw no devices...this might be because it can't enumerate them, or there really aren't any available. This prevents the dsp driver from hogging control when there are no /dev/dsp* nodes (for example, on a Linux box with ALSA and no OSS emulation).
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 01 Jan 2009 07:54:58 +0000
parents 99210400e8b9
children
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef __SDL_NTO_AUDIO_H__
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25 #define __SDL_NTO_AUDIO_H__
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26
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27 #include <sys/asoundlib.h>
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28
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29 #include "../SDL_sysaudio.h"
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30
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31 /* Hidden "this" pointer for the audio functions */
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32 #define _THIS SDL_AudioDevice *this
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33
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34 struct SDL_PrivateAudioData
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35 {
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36 /* The audio device handle */
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37 int cardno;
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38 int deviceno;
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39 snd_pcm_t *audio_handle;
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41 /* The audio file descriptor */
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42 int audio_fd;
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43
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44 /* The parent process id, to detect when application quits */
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45 pid_t parent;
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46
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47 /* Raw mixing buffer */
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48 Uint8 *pcm_buf;
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49 Uint32 pcm_len;
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50 };
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51
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52 #endif /* __SDL_NTO_AUDIO_H__ */
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53 /* vi: set ts=4 sw=4 expandtab: */