pcem/experimental/printer_epsonlx810/wx-imagesave.cc

#include "lpt_epsonlx810.h"

#include <wx/xrc/xmlres.h>
#include <wx/wfstream.h>
#include <wx/log.h>

int wx_image_save_fullpath(const char *fullpath, const char *format, unsigned char *rgba, int width, int height, int alpha) {
        int x, y;
        wxLogNull logNull;
        wxImage image(width, height);
        if (alpha) {
                // these will be automatically freed
                unsigned char *rgb = (unsigned char *)malloc(width * height * 3);
                unsigned char *a = (unsigned char *)malloc(width * height);
                for (x = 0; x < width; ++x) {
                        for (y = 0; y < height; ++y) {
                                rgb[(y * width + x) * 3 + 0] = rgba[(y * width + x) * 4 + 0];
                                rgb[(y * width + x) * 3 + 1] = rgba[(y * width + x) * 4 + 1];
                                rgb[(y * width + x) * 3 + 2] = rgba[(y * width + x) * 4 + 2];
                                a[y * width + x] = rgba[(y * width + x) * 4 + 3];
                        }
                }
                image.SetData(rgb);
                image.SetAlpha(a);
        } else
                image.SetData(rgba, true);

        wxImageHandler *h;

        if (!strcmp(format, IMAGE_TIFF))
                h = new wxTIFFHandler();
        else if (!strcmp(format, IMAGE_BMP))
                h = new wxBMPHandler();
        else if (!strcmp(format, IMAGE_JPG))
                h = new wxJPEGHandler();
        else
                h = new wxPNGHandler();

        int res = 0;
        if (h) {
                wxString p(fullpath);

                wxFileOutputStream stream(p);
                res = h->SaveFile(&image, stream, false);
                delete h;
        }

        return res;
}