fixes by adenin

[enigma2.git] / lib / gdi / epng.cpp

diff --git a/lib/gdi/epng.cpp b/lib/gdi/epng.cpp
index 0f8ea56843a0c7cf6f774ab09b6aeedb67cc4c49..d0da60327b4c249b74e7f260662ff3f085a83cab 100644 (file)
--- a/lib/gdi/epng.cpp
+++ b/lib/gdi/epng.cpp
@@ -229,6 +229,8 @@ int loadJPG(ePtr<gPixmap> &result, const char *filename, ePtr<gPixmap> alpha)
 
 int savePNG(const char *filename, gPixmap *pixmap)
 {
+
+       eDebug("\33[33m %s \33[0m",filename);
        FILE *fp=fopen(filename, "wb");
        if (!fp)
                return -1;
@@ -254,6 +256,11 @@ int savePNG(const char *filename, gPixmap *pixmap)
                unlink(filename);
                return -3;
        }
+
+       png_set_IHDR(png_ptr, info_ptr, surface->x, surface->y, surface->bpp/surface->bypp, 
+               PNG_COLOR_TYPE_RGB_ALPHA, 
+               PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+
        if (setjmp(png_ptr->jmpbuf))
        {
                eDebug("error :/");
@@ -266,29 +273,35 @@ int savePNG(const char *filename, gPixmap *pixmap)
        png_set_filter(png_ptr, 0, PNG_FILTER_NONE|PNG_FILTER_SUB|PNG_FILTER_PAETH);
        png_set_compression_level(png_ptr, Z_BEST_COMPRESSION);
 
-       png_set_IHDR(png_ptr, info_ptr, surface->x, surface->y, surface->bpp, 
-               surface->clut.data ? PNG_COLOR_TYPE_PALETTE : PNG_COLOR_TYPE_GRAY, 
-               PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
-       if (surface->clut.data)
+       png_write_info(png_ptr, info_ptr);
+       png_set_packing(png_ptr);
+
+       png_byte *row_pointer;
+       png_byte *cr = new png_byte[surface->y * surface->stride];
+       if (cr == NULL)
+       {
+               printf("Error: malloc\n");
+               return -5;
+       }
+       for (int i=0; i<surface->y; ++i)
        {
-               png_color palette[surface->clut.colors];
-               png_byte trans[surface->clut.colors];
-               for (int i=0; i<surface->clut.colors; ++i)
+               row_pointer=((png_byte*)surface->data)+i*surface->stride;
+               if (surface->bypp == 4)
                {
-                       palette[i].red=surface->clut.data[i].r;
-                       palette[i].green=surface->clut.data[i].g;
-                       palette[i].blue=surface->clut.data[i].b;
-                       trans[i]=255-surface->clut.data[i].a;
+                       memcpy(cr, row_pointer, surface->stride);
+                       for (int j=0; j<surface->stride; j+=4)
+                       {
+                               unsigned char tmp = cr[j];
+                               cr[j] = cr[j+2];
+                               cr[j+2]= tmp;
+                       }
+                       png_write_row(png_ptr, cr);
                }
-               png_set_PLTE(png_ptr, info_ptr, palette, surface->clut.colors);
-               png_set_tRNS(png_ptr, info_ptr, trans, surface->clut.colors, 0);
+               else
+                       png_write_row(png_ptr, row_pointer);
        }
-       png_write_info(png_ptr, info_ptr);
-       png_set_packing(png_ptr);
-       png_byte *row_pointers[surface->y];
-       for (int i=0; i<surface->y; ++i)
-               row_pointers[i]=((png_byte*)surface->data)+i*surface->stride;
-       png_write_image(png_ptr, row_pointers);
+       delete cr;
+
        png_write_end(png_ptr, info_ptr);
        png_destroy_write_struct(&png_ptr, &info_ptr);
        fclose(fp);