src/library/pixfmt-rgb32.cpp

   1 #include "pixfmt-rgb32.hpp"
   2
   3 pixel_format_rgb32::~pixel_format_rgb32() throw() {}
   4
   5 void pixel_format_rgb32::decode(uint8_t* target, const uint8_t* src, size_t width) throw()
   6 {
   7         const uint32_t* _src = reinterpret_cast<const uint32_t*>(src);
   8         for(size_t i = 0; i < width; i++) {
   9                 target[3 * i + 0] = _src[i] >> 16;
  10                 target[3 * i + 1] = _src[i] >> 8;
  11                 target[3 * i + 2] = _src[i];
  12         }
  13 }
  14
  15 void pixel_format_rgb32::decode(uint32_t* target, const uint8_t* src, size_t width,
  16         const pixel_format_aux_palette<false>& auxp) throw()
  17 {
  18         const uint32_t* _src = reinterpret_cast<const uint32_t*>(src);
  19         for(size_t i = 0; i < width; i++) {
  20                 target[i] = ((_src[i] >> 16) & 0xFF) << auxp.rshift;
  21                 target[i] |= ((_src[i] >> 8) & 0xFF) << auxp.gshift;
  22                 target[i] |= (_src[i] & 0xFF) << auxp.bshift;
  23         }
  24 }
  25
  26 void pixel_format_rgb32::decode(uint64_t* target, const uint8_t* src, size_t width,
  27         const pixel_format_aux_palette<true>& auxp) throw()
  28 {
  29         const uint32_t* _src = reinterpret_cast<const uint32_t*>(src);
  30         for(size_t i = 0; i < width; i++) {
  31                 target[i] = static_cast<uint64_t>((_src[i] >> 16) & 0xFF) << auxp.rshift;
  32                 target[i] |= static_cast<uint64_t>((_src[i] >> 8) & 0xFF) << auxp.gshift;
  33                 target[i] |= static_cast<uint64_t>(_src[i] & 0xFF) << auxp.bshift;
  34                 target[i] += (target[i] << 8);
  35         }
  36 }
  37
  38 void pixel_format_rgb32::set_palette(pixel_format_aux_palette<false>& auxp, uint8_t rshift, uint8_t gshift,
  39         uint8_t bshift) throw(std::bad_alloc)
  40 {
  41         auxp.rshift = rshift;
  42         auxp.gshift = gshift;
  43         auxp.bshift = bshift;
  44         auxp.pcache.clear();
  45 }
  46
  47 void pixel_format_rgb32::set_palette(pixel_format_aux_palette<true>& auxp, uint8_t rshift, uint8_t gshift,
  48         uint8_t bshift) throw(std::bad_alloc)
  49 {
  50         auxp.rshift = rshift;
  51         auxp.gshift = gshift;
  52         auxp.bshift = bshift;
  53         auxp.pcache.clear();
  54 }
  55
  56 uint8_t pixel_format_rgb32::get_bpp() throw()
  57 {
  58         return 4;
  59 }
  60
  61 uint8_t pixel_format_rgb32::get_ss_bpp() throw()
  62 {
  63         return 3;
  64 }
  65
  66 uint32_t pixel_format_rgb32::get_magic() throw()
  67 {
  68         return 0x74212536U;
  69 }
  70
  71 pixel_format_rgb32 _pixel_format_rgb32;