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annotate src/audio/arts/SDL_artsaudio.h @ 3096:ae4e80dbe330

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Date: Tue, 17 Feb 2009 14:00:25 +0100 From: Stefan Klug Subject: [SDL] Possible bug, paused audio playing garbage On my WinCE device a paused audio device plays random garbage. This might also be the issue in the thread "sound cracks with SDL_mixer and AUDIO_S16LSB" I don't have that much knowledge of the SDL audio part, but the attached patch fixes it for me, and collapses two redundant ifs. I'm not sure if this is the correct way to fix this. Shouldn't the complete stream conversion part of the RunAudio loop be dependent on the paused property of the device? (not only the call to (*fill)(udata, istream, istream_len). Anyways. Would be great if the patch or a fix could find its way to SVN ;-) Cheers Stefan
author Sam Lantinga <slouken@libsdl.org>
date Mon, 23 Mar 2009 05:21:40 +0000
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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 Lesser General Public
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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.
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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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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_artscaudio_h
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25 #define _SDL_artscaudio_h
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26
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27 #include <artsc.h>
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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 stream descriptor for the audio device */
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37 arts_stream_t stream;
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38
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39 /* The parent process id, to detect when application quits */
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40 pid_t parent;
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41
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42 /* Raw mixing buffer */
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43 Uint8 *mixbuf;
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44 int mixlen;
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45
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46 /* Support for audio timing using a timer, in addition to select() */
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47 float frame_ticks;
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48 float next_frame;
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49 };
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50 #define FUDGE_TICKS 10 /* The scheduler overhead ticks per frame */
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52 #endif /* _SDL_artscaudio_h */
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53 /* vi: set ts=4 sw=4 expandtab: */