hw/display/omap_lcd_template.h

   1 /*
   2  * QEMU OMAP LCD Emulator templates
   3  *
   4  * Copyright (c) 2006 Andrzej Zaborowski  <balrog@zabor.org>
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in
  14  *    the documentation and/or other materials provided with the
  15  *    distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
  18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  19  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  25  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 /*
  31  * 2-bit colour
  32  */
  33 static void draw_line2_32(void *opaque, uint8_t *d, const uint8_t *s,
  34                           int width, int deststep)
  35 {
  36     uint16_t *pal = opaque;
  37     uint8_t v, r, g, b;
  38
  39     do {
  40         v = ldub_p((void *) s);
  41         r = (pal[v & 3] >> 4) & 0xf0;
  42         g = pal[v & 3] & 0xf0;
  43         b = (pal[v & 3] << 4) & 0xf0;
  44         ((uint32_t *) d)[0] = rgb_to_pixel32(r, g, b);
  45         d += 4;
  46         v >>= 2;
  47         r = (pal[v & 3] >> 4) & 0xf0;
  48         g = pal[v & 3] & 0xf0;
  49         b = (pal[v & 3] << 4) & 0xf0;
  50         ((uint32_t *) d)[0] = rgb_to_pixel32(r, g, b);
  51         d += 4;
  52         v >>= 2;
  53         r = (pal[v & 3] >> 4) & 0xf0;
  54         g = pal[v & 3] & 0xf0;
  55         b = (pal[v & 3] << 4) & 0xf0;
  56         ((uint32_t *) d)[0] = rgb_to_pixel32(r, g, b);
  57         d += 4;
  58         v >>= 2;
  59         r = (pal[v & 3] >> 4) & 0xf0;
  60         g = pal[v & 3] & 0xf0;
  61         b = (pal[v & 3] << 4) & 0xf0;
  62         ((uint32_t *) d)[0] = rgb_to_pixel32(r, g, b);
  63         d += 4;
  64         s ++;
  65         width -= 4;
  66     } while (width > 0);
  67 }
  68
  69 /*
  70  * 4-bit colour
  71  */
  72 static void draw_line4_32(void *opaque, uint8_t *d, const uint8_t *s,
  73                           int width, int deststep)
  74 {
  75     uint16_t *pal = opaque;
  76     uint8_t v, r, g, b;
  77
  78     do {
  79         v = ldub_p((void *) s);
  80         r = (pal[v & 0xf] >> 4) & 0xf0;
  81         g = pal[v & 0xf] & 0xf0;
  82         b = (pal[v & 0xf] << 4) & 0xf0;
  83         ((uint32_t *) d)[0] = rgb_to_pixel32(r, g, b);
  84         d += 4;
  85         v >>= 4;
  86         r = (pal[v & 0xf] >> 4) & 0xf0;
  87         g = pal[v & 0xf] & 0xf0;
  88         b = (pal[v & 0xf] << 4) & 0xf0;
  89         ((uint32_t *) d)[0] = rgb_to_pixel32(r, g, b);
  90         d += 4;
  91         s ++;
  92         width -= 2;
  93     } while (width > 0);
  94 }
  95
  96 /*
  97  * 8-bit colour
  98  */
  99 static void draw_line8_32(void *opaque, uint8_t *d, const uint8_t *s,
 100                           int width, int deststep)
 101 {
 102     uint16_t *pal = opaque;
 103     uint8_t v, r, g, b;
 104
 105     do {
 106         v = ldub_p((void *) s);
 107         r = (pal[v] >> 4) & 0xf0;
 108         g = pal[v] & 0xf0;
 109         b = (pal[v] << 4) & 0xf0;
 110         ((uint32_t *) d)[0] = rgb_to_pixel32(r, g, b);
 111         s ++;
 112         d += 4;
 113     } while (-- width != 0);
 114 }
 115
 116 /*
 117  * 12-bit colour
 118  */
 119 static void draw_line12_32(void *opaque, uint8_t *d, const uint8_t *s,
 120                            int width, int deststep)
 121 {
 122     uint16_t v;
 123     uint8_t r, g, b;
 124
 125     do {
 126         v = lduw_le_p((void *) s);
 127         r = (v >> 4) & 0xf0;
 128         g = v & 0xf0;
 129         b = (v << 4) & 0xf0;
 130         ((uint32_t *) d)[0] = rgb_to_pixel32(r, g, b);
 131         s += 2;
 132         d += 4;
 133     } while (-- width != 0);
 134 }
 135
 136 /*
 137  * 16-bit colour
 138  */
 139 static void draw_line16_32(void *opaque, uint8_t *d, const uint8_t *s,
 140                            int width, int deststep)
 141 {
 142 #if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
 143     memcpy(d, s, width * 2);
 144 #else
 145     uint16_t v;
 146     uint8_t r, g, b;
 147
 148     do {
 149         v = lduw_le_p((void *) s);
 150         r = (v >> 8) & 0xf8;
 151         g = (v >> 3) & 0xfc;
 152         b = (v << 3) & 0xf8;
 153         ((uint32_t *) d)[0] = rgb_to_pixel32(r, g, b);
 154         s += 2;
 155         d += 4;
 156     } while (-- width != 0);
 157 #endif
 158 }