All files / example bmp.js

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var Parser = require("../lib/binary_parser.js").Parser;
 
// C structure BITMAPFILEHEADER
// typedef struct tagBITMAPFILEHEADER {
//   WORD  bfType;
//   DWORD bfSize;
//   WORD  bfReserved1;
//   WORD  bfReserved2;
//   DWORD bfOffBits;
// } BITMAPFILEHEADER, *PBITMAPFILEHEADER;
var bmpFileHeader = new Parser()
  .endianess("little")
  .string("type", {
    length: 2,
    assert: "BM"
  })
  .uint32("size")
  .uint16("reserved1")
  .uint16("reserved2")
  .uint32("offBits");
 
// C structure BITMAPINFOHEADER definition
// typedef struct tagBITMAPINFOHEADER {
//     DWORD  biSize;
//     LONG   biWidth;
//     LONG   biHeight;
//     WORD   biPlanes;
//     WORD   biBitCount;
//     DWORD  biCompression;
//     DWORD  biSizeImage;
//     LONG   biXPelsPerMeter;
//     LONG   biYPelsPerMeter;
//     DWORD  biClrUsed;
//     DWORD  biClrImportant;
// } BITMAPINFOHEADER;
var bmpInfoHeader = new Parser()
  .endianess("little")
  .uint32("size")
  .int32("width")
  .int32("height")
  .uint16("planes")
  .uint16("bitCount")
  .uint32("compression")
  .uint32("sizeImage")
  .int32("xPelsPerMeter")
  .int32("yPelsPerMeter")
  .uint32("clrUsed")
  .uint32("clrImportant");
 
var bmpFile = new Parser()
  .nest("fileHeader", {
    type: bmpFileHeader
  })
  .nest("infoHeader", {
    type: bmpInfoHeader
  });
 
require("fs").readFile("test.bmp", function(err, data) {
  console.log(bmpFile.parse(data));
});