text: /*
   * Pixel drawing function templates for QEMU SM501 Device
   *
   * Copyright (c) 2008 Shin-ichiro KAWASAKI
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #if DEPTH == 8
  #define BPP 1
  #define PIXEL_TYPE uint8_t
  #elif DEPTH == 15 || DEPTH == 16
  #define BPP 2
  #define PIXEL_TYPE uint16_t
  #elif DEPTH == 32
  #define BPP 4
  #define PIXEL_TYPE uint32_t
  #else
  #error unsupport depth
  #endif
  
  #ifdef BGR_FORMAT
  #define PIXEL_NAME glue(DEPTH, bgr)
  #else
  #define PIXEL_NAME DEPTH
  #endif /* BGR_FORMAT */
  
  
  static void glue(draw_line8_, PIXEL_NAME)(
                   uint8_t *d, const uint8_t *s, int width, const uint32_t *pal)
  {
      uint8_t v, r, g, b;
      do {
        	v = ldub_raw(s);
  	r = (pal[v] >> 16) & 0xff;
  	g = (pal[v] >>  8) & 0xff;
  	b = (pal[v] >>  0) & 0xff;
  	((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
  	s ++;
  	d += BPP;
      } while (-- width != 0);
  }
  
  static void glue(draw_line16_, PIXEL_NAME)(
  		 uint8_t *d, const uint8_t *s, int width, const uint32_t *pal)
  {
      uint16_t rgb565;
      uint8_t r, g, b;
  
      do {
  	rgb565 = lduw_raw(s);
  	r = ((rgb565 >> 11) & 0x1f) << 3;
  	g = ((rgb565 >>  5) & 0x3f) << 2;
  	b = ((rgb565 >>  0) & 0x1f) << 3;
  	((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
  	s += 2;
  	d += BPP;
      } while (-- width != 0);
  }
  
  static void glue(draw_line32_, PIXEL_NAME)(
  		 uint8_t *d, const uint8_t *s, int width, const uint32_t *pal)
  {
      uint8_t r, g, b;
  
      do {
  	ldub_raw(s);
  #if defined(TARGET_WORDS_BIGENDIAN)
          r = s[1];
          g = s[2];
          b = s[3];
  #else
          b = s[0];
          g = s[1];
          r = s[2];
  #endif
  	((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
  	s += 4;
  	d += BPP;
      } while (-- width != 0);
  }
  
  /**
   * Draw hardware cursor image on the given line.
   */
  static void glue(draw_hwc_line_, PIXEL_NAME)(SM501State * s, int crt,
                           uint8_t * palette, int c_y, uint8_t *d, int width)
  {
      int x, i;
      uint8_t bitset = 0;
  
      /* get hardware cursor pattern */
      uint32_t cursor_addr = get_hwc_address(s, crt);
      assert(0 <= c_y && c_y < SM501_HWC_HEIGHT);
      cursor_addr += 64 * c_y / 4;  /* 4 pixels per byte */
      cursor_addr += s->base;
  
      /* get cursor position */
      x = get_hwc_x(s, crt);
      d += x * BPP;
  
      for (i = 0; i < SM501_HWC_WIDTH && x + i < width; i++) {
          uint8_t v;
  
          /* get pixel value */
          if (i % 4 == 0) {
              cpu_physical_memory_rw(cursor_addr, &bitset, 1, 0);
              cursor_addr++;
          }
          v = bitset & 3;
          bitset >>= 2;
  
          /* write pixel */
          if (v) {
              v--;
              uint8_t r = palette[v * 3 + 0];
              uint8_t g = palette[v * 3 + 1];
              uint8_t b = palette[v * 3 + 2];
              ((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
          }
          d += BPP;
      }
  }
  
  #undef DEPTH
  #undef BPP
  #undef PIXEL_TYPE
  #undef PIXEL_NAME
  #undef BGR_FORMAT
  