hw/tc6393xb_template.h

   1 /*
   2  * Toshiba TC6393XB I/O Controller.
   3  * Found in Sharp Zaurus SL-6000 (tosa) or some
   4  * Toshiba e-Series PDAs.
   5  *
   6  * FB support code. Based on G364 fb emulator
   7  *
   8  * Copyright (c) 2007 Hervé Poussineau
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #if BITS == 8
  25 # define SET_PIXEL(addr, color) *(uint8_t*)addr = color;
  26 #elif BITS == 15 || BITS == 16
  27 # define SET_PIXEL(addr, color) *(uint16_t*)addr = color;
  28 #elif BITS == 24
  29 # define SET_PIXEL(addr, color) \
  30     addr[0] = color; addr[1] = (color) >> 8; addr[2] = (color) >> 16;
  31 #elif BITS == 32
  32 # define SET_PIXEL(addr, color) *(uint32_t*)addr = color;
  33 #else
  34 # error unknown bit depth
  35 #endif
  36
  37
  38 static void glue(tc6393xb_draw_graphic, BITS)(TC6393xbState *s)
  39 {
  40     int i;
  41     uint16_t *data_buffer;
  42     uint8_t *data_display;
  43
  44     data_buffer = s->vram_ptr;
  45     data_display = ds_get_data(s->ds);
  46     for(i = 0; i < s->scr_height; i++) {
  47 #if (BITS == 16)
  48         memcpy(data_display, data_buffer, s->scr_width * 2);
  49         data_buffer += s->scr_width;
  50         data_display += ds_get_linesize(s->ds);
  51 #else
  52         int j;
  53         for (j = 0; j < s->scr_width; j++, data_display += BITS / 8, data_buffer++) {
  54             uint16_t color = *data_buffer;
  55             uint32_t dest_color = glue(rgb_to_pixel, BITS)(
  56                            ((color & 0xf800) * 0x108) >> 11,
  57                            ((color & 0x7e0) * 0x41) >> 9,
  58                            ((color & 0x1f) * 0x21) >> 2
  59                            );
  60             SET_PIXEL(data_display, dest_color);
  61         }
  62 #endif
  63     }
  64 }
  65
  66 #undef BITS
  67 #undef SET_PIXEL