view src/cdrom/macosx/CDPlayer.h @ 3880:74e828c64315 SDL-1.2

Fixed bug #292 I might be on crack here. It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and right channels of a stereo stream together, and clamps the new mono channel if it would overflow. Shouldn't it be dividing by 2 to average the two sample points instead of clamping? Otherwise the mono sample point's volume doubles in the conversion. This would also make the conversion faster, as it replaces two branches per sample frame with a bitwise shift. --ryan.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Sep 2006 15:45:37 +0000
parents dc6b59e925a2
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#ifndef __CDPlayer__H__
#define __CDPlayer__H__ 1

#include <string.h>

#include <Carbon/Carbon.h>
#include <CoreFoundation/CoreFoundation.h>
#include <AudioUnit/AudioUnit.h>

#include "SDL.h"
#include "SDL_thread.h"
#include "SDL_mutex.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef void (*CDPlayerCompletionProc)(SDL_CD *cdrom) ;

void     Lock ();

void     Unlock();

int      LoadFile (const FSRef *ref, int startFrame, int endFrame); /* pass -1 to do nothing */

int      ReleaseFile ();

int      PlayFile  ();

int      PauseFile ();

void     SetCompletionProc (CDPlayerCompletionProc proc, SDL_CD *cdrom);

int      ReadTOCData (FSVolumeRefNum theVolume, SDL_CD *theCD);

int      ListTrackFiles (FSVolumeRefNum theVolume, FSRef *trackFiles, int numTracks);

int      DetectAudioCDVolumes (FSVolumeRefNum *volumes, int numVolumes);

int      GetCurrentFrame ();

#ifdef __cplusplus
};
#endif

#endif /* __CD_Player__H__ */