view src/video/qnxgf/SDL_gf_pixelfmt.c @ 3473:7bdc10624cba

This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Nov 2009 07:14:21 +0000
parents 44d5474c2c8a
children f7b03b6838cb
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 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

    QNX Graphics Framework SDL driver
    Copyright (C) 2009 Mike Gorchak
    (mike@malva.ua, lestat@i.com.ua)
*/

#include "SDL_config.h"
#include "SDL_gf_pixelfmt.h"

gf_format_t
qnxgf_sdl_to_gf_pixelformat(uint32_t pixelfmt)
{
    switch (pixelfmt) {
    case SDL_PIXELFORMAT_INDEX8:
        {
            return GF_FORMAT_PAL8;
        }
        break;
    case SDL_PIXELFORMAT_ARGB1555:
        {
            return GF_FORMAT_PACK_ARGB1555;
        }
        break;
    case SDL_PIXELFORMAT_RGB555:
        {
            /* RGB555 is the same as ARGB1555, but alpha is ignored */
            return GF_FORMAT_PACK_ARGB1555;
        }
        break;
    case SDL_PIXELFORMAT_RGB565:
        {
            return GF_FORMAT_PACK_RGB565;
        }
        break;
    case SDL_PIXELFORMAT_BGR565:
        {
            return GF_FORMAT_PKBE_RGB565;
        }
        break;
    case SDL_PIXELFORMAT_RGB24:
        {
            /* GF has wrong components order */
            return GF_FORMAT_BGR888;
        }
        break;
    case SDL_PIXELFORMAT_RGB888:
        {
            /* The same format as ARGB8888, but with alpha ignored */
            /* and GF has wrong components order                   */
            return GF_FORMAT_BGRA8888;
        }
        break;
    case SDL_PIXELFORMAT_ARGB8888:
        {
            /* GF has wrong components order */
            return GF_FORMAT_BGRA8888;
        }
        break;
    case SDL_PIXELFORMAT_BGRA8888:
        {
            /* GF has wrong components order */
            return GF_FORMAT_ARGB8888;
        }
        break;
    case SDL_PIXELFORMAT_YV12:
        {
            return GF_FORMAT_PLANAR_YUV_YV12;
        }
        break;
    case SDL_PIXELFORMAT_YUY2:
        {
            return GF_FORMAT_PACK_YUV_YUY2;
        }
        break;
    case SDL_PIXELFORMAT_UYVY:
        {
            return GF_FORMAT_PACK_YUV_UYVY;
        }
        break;
    case SDL_PIXELFORMAT_YVYU:
        {
            return GF_FORMAT_PACK_YUV_YVYU;
        }
        break;
    }

    return GF_FORMAT_INVALID;
}

uint32_t
qnxgf_gf_to_sdl_pixelformat(gf_format_t pixelfmt)
{
    switch (pixelfmt) {
    case GF_FORMAT_PAL8:
        {
            return SDL_PIXELFORMAT_INDEX8;
        }
        break;
    case GF_FORMAT_PKLE_ARGB1555:
        {
            return SDL_PIXELFORMAT_ARGB1555;
        }
        break;
    case GF_FORMAT_PACK_ARGB1555:
        {
            return SDL_PIXELFORMAT_ARGB1555;
        }
        break;
    case GF_FORMAT_PKBE_RGB565:
        {
            return SDL_PIXELFORMAT_BGR565;
        }
        break;
    case GF_FORMAT_PKLE_RGB565:
        {
            return SDL_PIXELFORMAT_RGB565;
        }
        break;
    case GF_FORMAT_PACK_RGB565:
        {
            return SDL_PIXELFORMAT_RGB565;
        }
        break;
    case GF_FORMAT_BGR888:
        {
            /* GF has wrong components order */
            return SDL_PIXELFORMAT_RGB24;
        }
        break;
    case GF_FORMAT_BGRA8888:
        {
            /* GF has wrong components order */
            return SDL_PIXELFORMAT_ARGB8888;
        }
        break;
    case GF_FORMAT_ARGB8888:
        {
            /* GF has wrong components order */
            return SDL_PIXELFORMAT_BGRA8888;
        }
        break;
    case GF_FORMAT_PLANAR_YUV_YV12:
        {
            return SDL_PIXELFORMAT_YV12;
        }
        break;
    case GF_FORMAT_PACK_YUV_YUY2:
        {
            return SDL_PIXELFORMAT_YUY2;
        }
        break;
    case GF_FORMAT_PACK_YUV_UYVY:
        {
            return SDL_PIXELFORMAT_UYVY;
        }
        break;
    case GF_FORMAT_PACK_YUV_YVYU:
        {
            return SDL_PIXELFORMAT_YVYU;
        }
        break;
    }

    return SDL_PIXELFORMAT_UNKNOWN;
}

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