1 /*

     2  *  Render Engine for framebuffer devices

     3  *

     4  *  Copyright (c) 2008 CodeSourcery

     5  *

     6  * This library is free software; you can redistribute it and/or

     7  * modify it under the terms of the GNU Lesser General Public

     8  * License as published by the Free Software Foundation; either

     9  * version 2 of the License, or (at your option) any later version.

    10  *

    11  * This library is distributed in the hope that it will be useful,

    12  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    14  * Lesser General Public License for more details.

    15  *

    16  * You should have received a copy of the GNU Lesser General Public

    17  * License along with this library; if not, write to the Free Software

    18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    19  */

    20 

    21 

    22 /* This file builds the definition tree. */

    23 

    24 /*

    25     Tree levels:

    26         DEFINING_DEST_BPP

    27         DEFINING_COLOR_ORDER

    28         DEFINING_BYTE_ORDER

    29         DEFINING_PIXEL_ORDER

    30 */

    31 

    32 /* this is for the first time definitions */

    33 #ifndef DEFINING_WHAT

    34 

    35 #   define FB_LITTLE_ENDIAN 0

    36 #   define FB_BIG_ENDIAN    1

    37 

    38 #   define FB_CO_RGB    0

    39 #   define FB_CO_BGR    1

    40 

    41 #   define DEFINING_DEST_BPP        1

    42 #   define DEFINING_SRC_COLOR_ORDER 2

    43 #   define DEFINING_SRC_BYTE_ORDER  3

    44 #   define DEFINING_SRC_PIXEL_ORDER 4

    45 #   define DEFINING_FUNCTIONS       5   /* Tree leaf */

    46 

    47 #   define DEFINING_WHAT    DEFINING_DEST_BPP   /* first definition level */

    48 #endif

    49 

    50 

    51 /* Begin tree:

    52     Each #if DEFINING_WHAT == XXX has one block per option of that level.

    53     For example, DEFINING_DEST_BPP will have 5 blocks (8,15,16,24,32).

    54     Each of these blocks has the same format:

    55         undef DEFINING_WHAT

    56         define DEFINING_WHAT (next level)

    57         define option

    58         include "fb_render_def.h"

    59         undef option

    60     So, at the end of each block, the only remaining definition is DEFINING_WHAT.

    61 

    62     New combining factors (i.e. more parameters for DEST, such as COLOR ORDER,

    63     BYTE ORDER, etc.) will have to be added as new blocks.

    64 */

    65 

    66 

    67 #if DEFINING_WHAT == DEFINING_DEST_BPP

    68 

    69 #   undef DEFINING_WHAT

    70 #   define DEFINING_WHAT    DEFINING_SRC_COLOR_ORDER

    71 #   define DEST_BPP 8

    72 #   include "fb_render_def.h"

    73 #   undef DEST_BPP

    74 

    75 #   undef DEFINING_WHAT

    76 #   define DEFINING_WHAT    DEFINING_SRC_COLOR_ORDER

    77 #   define DEST_BPP 15

    78 #   include "fb_render_def.h"

    79 #   undef DEST_BPP

    80 

    81 #   undef DEFINING_WHAT

    82 #   define DEFINING_WHAT    DEFINING_SRC_COLOR_ORDER

    83 #   define DEST_BPP 16

    84 #   include "fb_render_def.h"

    85 #   undef DEST_BPP

    86 

    87 #   undef DEFINING_WHAT

    88 #   define DEFINING_WHAT    DEFINING_SRC_COLOR_ORDER

    89 #   define DEST_BPP 24

    90 #   include "fb_render_def.h"

    91 #   undef DEST_BPP

    92 

    93 #   undef DEFINING_WHAT

    94 #   define DEFINING_WHAT    DEFINING_SRC_COLOR_ORDER

    95 #   define DEST_BPP 32

    96 #   include "fb_render_def.h"

    97 #   undef DEST_BPP

    98 

    99 #elif DEFINING_WHAT == DEFINING_SRC_COLOR_ORDER

   100 

   101 #   undef DEFINING_WHAT

   102 #   define DEFINING_WHAT    DEFINING_SRC_BYTE_ORDER

   103 #   define FB_SRC_COLOR_ORDER   FB_CO_BGR

   104 #   include "fb_render_def.h"

   105 #   undef FB_SRC_COLOR_ORDER

   106 

   107 #   undef DEFINING_WHAT

   108 #   define DEFINING_WHAT    DEFINING_SRC_BYTE_ORDER

   109 #   define FB_SRC_COLOR_ORDER   FB_CO_RGB

   110 #   include "fb_render_def.h"

   111 #   undef FB_SRC_COLOR_ORDER

   112 

   113 #elif DEFINING_WHAT == DEFINING_SRC_BYTE_ORDER

   114 

   115 #   undef DEFINING_WHAT

   116 #   define DEFINING_WHAT    DEFINING_SRC_PIXEL_ORDER

   117 #   define FB_SRC_BYTE_ORDER    FB_LITTLE_ENDIAN

   118 #   include "fb_render_def.h"

   119 #   undef FB_SRC_BYTE_ORDER

   120 

   121 #   undef DEFINING_WHAT

   122 #   define DEFINING_WHAT    DEFINING_SRC_PIXEL_ORDER

   123 #   define FB_SRC_BYTE_ORDER    FB_BIG_ENDIAN

   124 #   include "fb_render_def.h"

   125 #   undef FB_SRC_BYTE_ORDER

   126 

   127 #elif DEFINING_WHAT == DEFINING_SRC_PIXEL_ORDER

   128 

   129 #   undef DEFINING_WHAT

   130 #   define DEFINING_WHAT    DEFINING_FUNCTIONS

   131 #   define FB_SRC_PIXEL_ORDER    FB_LITTLE_ENDIAN

   132 #   include "fb_render_def.h"

   133 #   undef FB_SRC_PIXEL_ORDER

   134 

   135 #   undef DEFINING_WHAT

   136 #   define DEFINING_WHAT    DEFINING_FUNCTIONS

   137 #   define FB_SRC_PIXEL_ORDER    FB_BIG_ENDIAN

   138 #   include "fb_render_def.h"

   139 #   undef FB_SRC_PIXEL_ORDER

   140 

   141 #elif DEFINING_WHAT == DEFINING_FUNCTIONS

   142 #   undef DEFINING_WHAT

   143     /* End of recursion. Include the template now */

   144 #   include "fb_render_template.h"

   145 #endif

   146 

   147 

   148