view src/video/cocoa/SDL_cocoaopengl.h @ 2042:3908e1f808e1

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 15:56:36 +0000
parents 420716272158
children 99210400e8b9
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

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

#ifndef _SDL_cocoaopengl_h
#define _SDL_cocoaopengl_h

#if SDL_VIDEO_OPENGL_CGL

struct SDL_GLDriverData
{
    int initialized;
};

/* OpenGL functions */
extern int Cocoa_GL_LoadLibrary(_THIS, const char *path);
extern void *Cocoa_GL_GetProcAddress(_THIS, const char *proc);
extern int Cocoa_GL_SetupWindow(_THIS, SDL_Window * window);
extern void Cocoa_GL_CleanupWindow(_THIS, SDL_Window * window);
extern SDL_GLContext Cocoa_GL_CreateContext(_THIS, SDL_Window * window);
extern int Cocoa_GL_MakeCurrent(_THIS, SDL_Window * window,
                                SDL_GLContext context);
extern int Cocoa_GL_SetSwapInterval(_THIS, int interval);
extern int Cocoa_GL_GetSwapInterval(_THIS);
extern void Cocoa_GL_SwapWindow(_THIS, SDL_Window * window);
extern void Cocoa_GL_DeleteContext(_THIS, SDL_GLContext context);

#endif /* SDL_VIDEO_OPENGL_CGL */

#endif /* _SDL_cocoaopengl_h */

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