pixels.js

const {
  e,
  ref,
  Struct,
  ArrayType,
  en,
  push_export
} = require('./api');

e.SDL_ALPHA_OPAQUE = 255;
e.SDL_ALPHA_TRANSPARENT = 0;

e.SDL_PIXELTYPE_UNKNOWN = en(0);
e.SDL_PIXELTYPE_INDEX1 = en();
e.SDL_PIXELTYPE_INDEX4 = en();
e.SDL_PIXELTYPE_INDEX8 = en();
e.SDL_PIXELTYPE_PACKED8 = en();
e.SDL_PIXELTYPE_PACKED16 = en();
e.SDL_PIXELTYPE_PACKED32 = en();
e.SDL_PIXELTYPE_ARRAYU8 = en();
e.SDL_PIXELTYPE_ARRAYU16 = en();
e.SDL_PIXELTYPE_ARRAYU32 = en();
e.SDL_PIXELTYPE_ARRAYF16 = en();
e.SDL_PIXELTYPE_ARRAYF32 = en();

e.SDL_BITMAPORDER_NONE = en(0);
e.SDL_BITMAPORDER_4321 = en();
e.SDL_BITMAPORDER_1234 = en();
e.SDL_PIXELTYPE_ARRAYF32 = en();

e.SDL_PACKEDORDER_NONE = en(0);
e.SDL_PACKEDORDER_XRGB = en();
e.SDL_PACKEDORDER_RGBX = en();
e.SDL_PACKEDORDER_ARGB = en();
e.SDL_PACKEDORDER_RGBA = en();
e.SDL_PACKEDORDER_XBGR = en();
e.SDL_PACKEDORDER_BGRX = en();
e.SDL_PACKEDORDER_ABGR = en();
e.SDL_PACKEDORDER_BGRA = en();

e.SDL_ARRAYORDER_NONE = en(0);
e.SDL_ARRAYORDER_RGB = en();
e.SDL_ARRAYORDER_RGBA = en();
e.SDL_ARRAYORDER_ARGB = en();
e.SDL_ARRAYORDER_BGR = en();
e.SDL_ARRAYORDER_BGRA = en();
e.SDL_ARRAYORDER_ABGR = en();

e.SDL_PACKEDLAYOUT_NONE = en(0);
e.SDL_PACKEDLAYOUT_332 = en();
e.SDL_PACKEDLAYOUT_4444 = en();
e.SDL_PACKEDLAYOUT_1555 = en();
e.SDL_PACKEDLAYOUT_5551 = en();
e.SDL_PACKEDLAYOUT_565 = en();
e.SDL_PACKEDLAYOUT_8888 = en();
e.SDL_PACKEDLAYOUT_2101010 = en();
e.SDL_PACKEDLAYOUT_1010102 = en();

e.SDL_Color = Struct({
  r: 'Uint8',
  g: 'Uint8',
  b: 'Uint8',
  a: 'Uint8'
});
e.SDL_Palette = Struct({
  ncolors: 'int',
  colors: ref.refType(e.SDL_Color),
  version: 'Uint32',
  refcount: 'int',
});
e.SDL_PixelFormat = Struct({
  format: 'Uint32',
  palette: ref.refType(e.SDL_Palette),
  BitsPerPixel: 'Uint8',
  BytesPerPixel: 'Uint8',
  padding: ArrayType('Uint8', 2),
  Rmask: 'Uint32',
  Gmask: 'Uint32',
  Bmask: 'Uint32',
  Amask: 'Uint32',
  Rloss: 'Uint8',
  Gloss: 'Uint8',
  Bloss: 'Uint8',
  Aloss: 'Uint8',
  Rshift: 'Uint8',
  Gshift: 'Uint8',
  Bshift: 'Uint8',
  Ashift: 'Uint8',
  refcount: 'int',
  next: 'void*'
});

e.SDL_DEFINE_PIXELFOURCC = function(A, B, C, D) {
  return A << 0 | B << 8 | C << 16 | D << 24;
}
e.SDL_DEFINE_PIXELFORMAT = function(type, order, layout, bits, bytes) {
  return ((1 << 28) | ((type) << 24) | ((order) << 20) | ((layout) << 16) |
    ((bits) << 8) | ((bytes) << 0));
}
e.SDL_PIXELFLAG = function(X) {
  return ((X) >> 28) & 0x0F;
}
e.SDL_PIXELTYPE = function(X) {
  return ((X) >> 24) & 0x0F;
}
e.SDL_PIXELORDER = function(X) {
  return ((X) >> 20) & 0x0F;
}
e.SDL_PIXELLAYOUT = function(X) {
  return ((X) >> 16) & 0x0F;
}
e.SDL_BITSPERPIXEL = function(X) {
  return ((X) >> 8) & 0x0F;
}
e.SDL_BYTESPERPIXEL = function(X) {
  return e.SDL_ISPIXELFORMAT_FOURCC(X) ?
    ((((X) == e.SDL_PIXELFORMAT_YUY2) ||
      ((X) == e.SDL_PIXELFORMAT_UYVY) ||
      ((X) == e.SDL_PIXELFORMAT_YVYU)) ? 2 : 1) : (((X) >> 0) & 0xFF);
}
e.SDL_ISPIXELFORMAT_INDEXED = function(format) {
  return (!e.SDL_ISPIXELFORMAT_FOURCC(format) &&
    ((e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_INDEX1) ||
      (e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_INDEX4) ||
      (e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_INDEX8)));
}
e.SDL_ISPIXELFORMAT_PACKED = function(format) {
  return (!e.SDL_ISPIXELFORMAT_FOURCC(format) &&
    ((e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_PACKED8) ||
      (e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_PACKED16) ||
      (e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_PACKED32)));
}
e.SDL_ISPIXELFORMAT_ARRAY = function(format) {
  return (!e.SDL_ISPIXELFORMAT_FOURCC(format) &&
    ((e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_ARRAYU8) ||
      (e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_ARRAYU16) ||
      (e.SDL_PIXELTYPE(format) == e.e.SDL_PIXELTYPE_ARRAYU32) ||
      (e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_ARRAYF16) ||
      (e.SDL_PIXELTYPE(format) == e.SDL_PIXELTYPE_ARRAYF32)));
}
e.SDL_ISPIXELFORMAT_ALPHA = function(format) {
  return ((e.SDL_ISPIXELFORMAT_PACKED(format) &&
      ((e.SDL_PIXELORDER(format) == e.SDL_PACKEDORDER_ARGB) ||
        (e.SDL_PIXELORDER(format) == e.e.SDL_PACKEDORDER_RGBA) ||
        (e.SDL_PIXELORDER(format) == e.SDL_PACKEDORDER_ABGR) ||
        (e.SDL_PIXELORDER(format) == e.SDL_PACKEDORDER_BGRA))) ||
    (e.SDL_ISPIXELFORMAT_ARRAY(format) &&
      ((e.SDL_PIXELORDER(format) == e.SDL_ARRAYORDER_ARGB) ||
        (e.SDL_PIXELORDER(format) == e.SDL_ARRAYORDER_RGBA) ||
        (e.SDL_PIXELORDER(format) == e.SDL_ARRAYORDER_ABGR) ||
        (e.SDL_PIXELORDER(format) == e.SDL_ARRAYORDER_BGRA))));
}
e.SDL_ISPIXELFORMAT_FOURCC = function(format) {
  return ((format) && (e.SDL_PIXELFLAG(format) != 1));
}

e.SDL_PIXELFORMAT_UNKNOWN = en(0);
e.SDL_PIXELFORMAT_INDEX1LSB =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_INDEX1, e.SDL_BITMAPORDER_4321, 0,
    1, 0));
e.SDL_PIXELFORMAT_INDEX1MSB =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_INDEX1, e.SDL_BITMAPORDER_1234, 0,
    1, 0));
e.SDL_PIXELFORMAT_INDEX4LSB =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_INDEX4, e.SDL_BITMAPORDER_4321, 0,
    4, 0));
e.SDL_PIXELFORMAT_INDEX4MSB =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_INDEX4, e.SDL_BITMAPORDER_1234, 0,
    4, 0));
e.SDL_PIXELFORMAT_INDEX8 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_INDEX8, 0, 0, 8, 1));
e.SDL_PIXELFORMAT_RGB332 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED8, e.SDL_PACKEDORDER_XRGB,
    e.SDL_PACKEDLAYOUT_332, 8, 1));
e.SDL_PIXELFORMAT_XRGB4444 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_XRGB,
    e.SDL_PACKEDLAYOUT_4444, 12, 2));
e.SDL_PIXELFORMAT_RGB444 = e.SDL_PIXELFORMAT_XRGB4444,
  e.SDL_PIXELFORMAT_XBGR4444 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_XBGR,
    e.SDL_PACKEDLAYOUT_4444, 12, 2));
e.SDL_PIXELFORMAT_BGR444 = e.SDL_PIXELFORMAT_XBGR4444,
  e.SDL_PIXELFORMAT_XRGB1555 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_XRGB,
    e.SDL_PACKEDLAYOUT_1555, 15, 2));
e.SDL_PIXELFORMAT_RGB555 = e.SDL_PIXELFORMAT_XRGB1555,
  e.SDL_PIXELFORMAT_XBGR1555 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_XBGR,
    e.SDL_PACKEDLAYOUT_1555, 15, 2));
e.SDL_PIXELFORMAT_BGR555 = e.SDL_PIXELFORMAT_XBGR1555,
  e.SDL_PIXELFORMAT_ARGB4444 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_ARGB,
    e.SDL_PACKEDLAYOUT_4444, 16, 2));
e.SDL_PIXELFORMAT_RGBA4444 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_RGBA,
    e.SDL_PACKEDLAYOUT_4444, 16, 2));
e.SDL_PIXELFORMAT_ABGR4444 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_ABGR,
    e.SDL_PACKEDLAYOUT_4444, 16, 2));
e.SDL_PIXELFORMAT_BGRA4444 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_BGRA,
    e.SDL_PACKEDLAYOUT_4444, 16, 2));
e.SDL_PIXELFORMAT_ARGB1555 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_ARGB,
    e.SDL_PACKEDLAYOUT_1555, 16, 2));
e.SDL_PIXELFORMAT_RGBA5551 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_RGBA,
    e.SDL_PACKEDLAYOUT_5551, 16, 2));
e.SDL_PIXELFORMAT_ABGR1555 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_ABGR,
    e.SDL_PACKEDLAYOUT_1555, 16, 2));
e.SDL_PIXELFORMAT_BGRA5551 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_BGRA,
    e.SDL_PACKEDLAYOUT_5551, 16, 2));
e.SDL_PIXELFORMAT_RGB565 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_XRGB,
    e.SDL_PACKEDLAYOUT_565, 16, 2));
e.SDL_PIXELFORMAT_BGR565 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED16, e.SDL_PACKEDORDER_XBGR,
    e.SDL_PACKEDLAYOUT_565, 16, 2));
e.SDL_PIXELFORMAT_RGB24 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_ARRAYU8, e.SDL_ARRAYORDER_RGB, 0,
    24, 3));
e.SDL_PIXELFORMAT_BGR24 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_ARRAYU8, e.SDL_ARRAYORDER_BGR, 0,
    24, 3));
e.SDL_PIXELFORMAT_XRGB8888 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED32, e.SDL_PACKEDORDER_XRGB,
    e.SDL_PACKEDLAYOUT_8888, 24, 4));
e.SDL_PIXELFORMAT_RGB888 = e.SDL_PIXELFORMAT_XRGB8888,
  e.SDL_PIXELFORMAT_RGBX8888 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED32, e.SDL_PACKEDORDER_RGBX,
    e.SDL_PACKEDLAYOUT_8888, 24, 4));
e.SDL_PIXELFORMAT_XBGR8888 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED32, e.SDL_PACKEDORDER_XBGR,
    e.SDL_PACKEDLAYOUT_8888, 24, 4));
e.SDL_PIXELFORMAT_BGR888 = e.SDL_PIXELFORMAT_XBGR8888,
  e.SDL_PIXELFORMAT_BGRX8888 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED32, e.SDL_PACKEDORDER_BGRX,
    e.SDL_PACKEDLAYOUT_8888, 24, 4));
e.SDL_PIXELFORMAT_ARGB8888 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED32, e.SDL_PACKEDORDER_ARGB,
    e.SDL_PACKEDLAYOUT_8888, 32, 4));
e.SDL_PIXELFORMAT_RGBA8888 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED32, e.SDL_PACKEDORDER_RGBA,
    e.SDL_PACKEDLAYOUT_8888, 32, 4));
e.SDL_PIXELFORMAT_ABGR8888 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED32, e.SDL_PACKEDORDER_ABGR,
    e.SDL_PACKEDLAYOUT_8888, 32, 4));
e.SDL_PIXELFORMAT_BGRA8888 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED32, e.SDL_PACKEDORDER_BGRA,
    e.SDL_PACKEDLAYOUT_8888, 32, 4));
e.SDL_PIXELFORMAT_ARGB2101010 =
  en(e.SDL_DEFINE_PIXELFORMAT(e.SDL_PIXELTYPE_PACKED32, e.SDL_PACKEDORDER_ARGB,
    e.SDL_PACKEDLAYOUT_2101010, 32, 4));
if (e.SDL_BYTEORDER == e.SDL_BIG_ENDIAN) {
  e.SDL_PIXELFORMAT_RGBA32 = en(e.SDL_PIXELFORMAT_RGBA8888);
  e.SDL_PIXELFORMAT_ARGB32 = en(e.SDL_PIXELFORMAT_ARGB8888);
  e.SDL_PIXELFORMAT_BGRA32 = en(e.SDL_PIXELFORMAT_BGRA8888);
  e.SDL_PIXELFORMAT_ABGR32 = en(e.SDL_PIXELFORMAT_ABGR8888);
} else {
  e.SDL_PIXELFORMAT_RGBA32 = en(e.SDL_PIXELFORMAT_ABGR8888);
  e.SDL_PIXELFORMAT_ARGB32 = en(e.SDL_PIXELFORMAT_BGRA8888);
  e.SDL_PIXELFORMAT_BGRA32 = en(e.SDL_PIXELFORMAT_ARGB8888);
  e.SDL_PIXELFORMAT_ABGR32 = en(e.SDL_PIXELFORMAT_RGBA8888);
}
e.SDL_PIXELFORMAT_YV12 =
  e.SDL_DEFINE_PIXELFOURCC('Y', 'V', '1', '2');
e.SDL_PIXELFORMAT_IYUV =
  e.SDL_DEFINE_PIXELFOURCC('I', 'Y', 'U', 'V');
e.SDL_PIXELFORMAT_YUY2 =
  e.SDL_DEFINE_PIXELFOURCC('Y', 'U', 'Y', '2');
e.SDL_PIXELFORMAT_UYVY =
  e.SDL_DEFINE_PIXELFOURCC('U', 'Y', 'V', 'Y');
e.SDL_PIXELFORMAT_YVYU =
  e.SDL_DEFINE_PIXELFOURCC('Y', 'V', 'Y', 'U');
e.SDL_PIXELFORMAT_NV12 =
  e.SDL_DEFINE_PIXELFOURCC('N', 'V', '1', '2');
e.SDL_PIXELFORMAT_NV21 =
  e.SDL_DEFINE_PIXELFOURCC('N', 'V', '2', '1');
e.SDL_PIXELFORMAT_EXTERNAL_OES =
  e.SDL_DEFINE_PIXELFOURCC('O', 'E', 'S', ' ');

push_export({
  'SDL_GetPixelFormatName': ['string', ['Uint32']],
  'SDL_PixelFormatEnumToMasks': ['int', ['Uint32', 'int', 'Uint32*', 'Uint32*', 'Uint32*', 'Uint32*']],
  'SDL_MasksToPixelFormatEnum': ['Uint32', ['int', 'Uint32', 'Uint32', 'Uint32', 'Uint32']],
  'SDL_AllocFormat': ['int*', ['Uint32']],
  'SDL_FreeFormat': ['void', ['Uint32']],
  'SDL_AllocPalette': ['int*', ['int']],
  'SDL_SetPixelFormatPalette': ['int', ['int*', 'int*']],
  'SDL_SetPaletteColors': ['int', ['int*', 'int*', 'int', 'int']],
  'SDL_FreePalette': ['void', ['int*']],
  'SDL_MapRGB': ['Uint32', ['int*', 'Uint8', 'Uint8', 'Uint8']],
  'SDL_MapRGBA': ['Uint32', ['int*', 'Uint8', 'Uint8', 'Uint8', 'Uint8']],
  'SDL_GetRGB': ['void', ['Uint32', 'int*', 'Uint8*', 'Uint8*', 'Uint8*']],
  'SDL_GetRGBA': ['void', ['Uint32', 'int*', 'Uint8*', 'Uint8*', 'Uint8*', 'Uint8*']],
  'SDL_CalculateGammaRamp': ['void', ['float', 'Uint16*']],
});