view src/audio/dart/SDL_dart.h @ 1240:3b8a43c428bb

From Bug #36: There are a couple of issues with the selection of Altivec alpha-blitting routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c. 1) There's no check for the presence of Altivec when checking if the Blit32to565PixelAlphaAltivec() routine can be selected. 2) Altivec cannot be used in video memory, and there's no check if the destination surface is a hardware surface. (Alpha-blitting to a hardware surface with GPU support is a bad idea, but somebody's bound to do it anyway.) Patch to fix these attached.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 08 Jan 2006 21:18:15 +0000
parents 173c063d4f55
children c9b51268668f
line wrap: on
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  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
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

#ifndef _SDL_lowaudio_h
#define _SDL_lowaudio_h

#include "SDL_sysaudio.h"

#define INCL_TYPES
#define INCL_DOSSEMAPHORES
#define INCL_DOSRESOURCES
#define INCL_DOSMISC
#define INCL_DOSERRORS

#define INCL_OS2MM
#define INCL_MMIOOS2
#define INCL_MCIOS2
#include <os2.h>
#include <os2me.h>     // DART stuff and MMIO stuff

/* Hidden "this" pointer for the audio functions */
#define _THIS	SDL_AudioDevice *_this

/* The DirectSound objects */
struct SDL_PrivateAudioData
{
  int iCurrDeviceOrd;
  int iCurrFreq;
  int iCurrBits;
  int iCurrChannels;
  int iCurrNumBufs;
  int iCurrBufSize;

  int iLastPlayedBuf;
  int iNextFreeBuffer;

  MCI_BUFFER_PARMS BufferParms;     // Sound buffer parameters
  MCI_MIX_BUFFER *pMixBuffers;      // Sound buffers
  MCI_MIXSETUP_PARMS MixSetupParms; // Mixer setup parameters
  HEV hevAudioBufferPlayed;         // Event semaphore to indicate that an audio buffer has been played by DART
};

#endif /* _SDL_lowaudio_h */