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annotate src/video/ataricommon/SDL_ataric2p_s.h @ 1798:49b4b8413734

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Date: Tue, 9 May 2006 23:01:49 -0400 From: Mike Frysinger Subject: [SDL] [patch] fall back to using MAP_PRIVATE with mmap() in fbcon dri trying to use MAP_SHARED with mmap() on uClinux (aka non-mmu) hosts nowadays will simply fail since the kernel disallows it ... falling back to using MAP_PRIVATE on these hosts is acceptable ... as such, ive attached a patch for the fbcon driver that will fall back to using MAP_PRIVATE if mmap() with MAP_SHARED failed going by a grep of MAP_SHARED, the only other drivers that utilize this flag are video/wscons, video/ps2gs, and sound/dmaaudio ... i dont think these would appear on a non-mmu host so the patch i wrote is restricted to just SDL_fbvideo.c ... -mike
author Sam Lantinga <slouken@libsdl.org>
date Wed, 10 May 2006 04:05:46 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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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18
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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 _ATARI_C2P_h
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25 #define _ATARI_C2P_h
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26
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27 #include "SDL_stdinc.h"
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28
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29 /*--- Functions pointers ---*/
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30
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31 /* Convert a chunky screen to bitplane screen */
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32
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33 extern void (*SDL_Atari_C2pConvert)(
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34 Uint8 *src, /* Source screen (one byte=one pixel) */
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35 Uint8 *dest, /* Destination (4/8 bits planes) */
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36 Uint32 width, /* Dimensions of screen to convert */
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37 Uint32 height,
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38 Uint32 dblligne, /* Double the lines when converting ? */
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39 Uint32 srcpitch, /* Length of one source line in bytes */
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40 Uint32 dstpitch /* Length of one destination line in bytes */
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41 );
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42
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43 /*--- 8 bits functions ---*/
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44
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45 /* Convert a chunky screen to bitplane screen */
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46
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47 void SDL_Atari_C2pConvert8(
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48 Uint8 *src, /* Source screen (one byte=one pixel) */
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49 Uint8 *dest, /* Destination (8 bits planes) */
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50 Uint32 width, /* Dimensions of screen to convert */
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51 Uint32 height,
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52 Uint32 dblligne, /* Double the lines when converting ? */
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53 Uint32 srcpitch, /* Length of one source line in bytes */
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54 Uint32 dstpitch /* Length of one destination line in bytes */
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55 );
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56
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57 /*--- 4 bits functions ---*/
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58
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59 /* Convert a chunky screen to bitplane screen */
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60
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61 void SDL_Atari_C2pConvert4(
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62 Uint8 *src, /* Source screen (one byte=one pixel) */
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63 Uint8 *dest, /* Destination (4 bits planes) */
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64 Uint32 width, /* Dimensions of screen to convert */
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65 Uint32 height,
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66 Uint32 dblligne, /* Double the lines when converting ? */
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67 Uint32 srcpitch, /* Length of one source line in bytes */
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68 Uint32 dstpitch /* Length of one destination line in bytes */
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69 );
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71 /* Conversion palette */
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72
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73 void SDL_Atari_C2pConvert4_pal(Uint16 *lightpalette);
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75 #endif /* _ATARI_C2P_h */