C/Visual C - TIFF->BMP

#include <stdio.h>

#include <tiffio.h>

#include <stdlib.h>

void convertTiffToBmp(const char* tiffFile, const char* bmpFile) {

    TIFF* tiff = TIFFOpen(tiffFile, "r");

    if (tiff) {

        uint32 width, height;

        size_t npixels;

        uint32* raster;

        TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &width);

        TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &height);

        npixels = width * height;

        raster = (uint32*) _TIFFmalloc(npixels * sizeof(uint32));

        if (raster != NULL) {

            if (TIFFReadRGBAImage(tiff, width, height, raster, 0)) {

                FILE* bmp = fopen(bmpFile, "wb");

                if (bmp) {

                    // Escribir encabezado BMP

                    // (Aquí deberías implementar la escritura del encabezado BMP)

                    // Escribir los datos de la imagen

                    fwrite(raster, sizeof(uint32), npixels, bmp);

                    fclose(bmp);

                }

            }

            _TIFFfree(raster);

        }

        TIFFClose(tiff);

    } else {

        printf("Error al abrir el archivo TIFF.\n");

    }

}

int main() {

    convertTiffToBmp("input.tiff", "output.bmp");

    return 0;

}

Imports System.Drawing

Imports System.Drawing.Imaging

Module Module1

    Sub Main()

        Dim tiffFile As String = "input.tiff"

        Dim bmpFile As String = "output.bmp"

        Using img As Image = Image.FromFile(tiffFile)

            img.Save(bmpFile, ImageFormat.Bmp)

        End Using

    End Sub

End Module