LXR qemu/hw/display/tc6393xb

   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    do {                         \
  31        addr[0] = color;         \
  32        addr[1] = (color) >> 8;  \
  33        addr[2] = (color) >> 16; \
  34    } while (0)
  35#elif BITS == 32
  36# define SET_PIXEL(addr, color)  (*(uint32_t *)addr = color)
  37#else
  38# error unknown bit depth
  39#endif
  40
  41
  42static void glue(tc6393xb_draw_graphic, BITS)(TC6393xbState *s)
  43{
  44    DisplaySurface *surface = qemu_console_surface(s->con);
  45    int i;
  46    uint16_t *data_buffer;
  47    uint8_t *data_display;
  48
  49    data_buffer = s->vram_ptr;
  50    data_display = surface_data(surface);
  51    for(i = 0; i < s->scr_height; i++) {
  52#if (BITS == 16)
  53        memcpy(data_display, data_buffer, s->scr_width * 2);
  54        data_buffer += s->scr_width;
  55        data_display += surface_stride(surface);
  56#else
  57        int j;
  58        for (j = 0; j < s->scr_width; j++, data_display += BITS / 8, data_buffer++) {
  59            uint16_t color = *data_buffer;
  60            uint32_t dest_color = glue(rgb_to_pixel, BITS)(
  61                           ((color & 0xf800) * 0x108) >> 11,
  62                           ((color & 0x7e0) * 0x41) >> 9,
  63                           ((color & 0x1f) * 0x21) >> 2
  64                           );
  65            SET_PIXEL(data_display, dest_color);
  66        }
  67#endif
  68    }
  69}
  70
  71#undef BITS
  72#undef SET_PIXEL
  73