Board.KolibriOS.org

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dword bmp_32x32x16_header[] = FROM "bmp32x32header";
void EventSave()
{
	char save_buf[3126];
	memmov(#save_buf, #bmp_32x32x16_header, sizeof(bmp_32x32x16_header));
	memmov(#save_buf+sizeof(bmp_32x32x16_header), image.get_image(), sizeof(save_buf)-sizeof(bmp_32x32x16_header));
	WriteFile(sizeof(save_buf), #save_buf, "/rd/1/saved_image.bmp")
}

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; if converted, try to save ; |-------------------------------------- ;
        push   dword [dstpath]
        push   eax
        push   ecx
        call   file.write

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 image.move(FLIP_VER); //fix an issue that BMP image is flipped vertically

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		mov dword[png_data],0

		;(1) create image struct
		stdcall [img_create], [buf_png.w], [buf_png.h], Image.bpp24
		mov ebx,eax
		test eax,eax
		jz @f
			;(2) copy foto to image buffer
			mov edi,[eax+Image.Data]
			mov esi,[buf_png]
			mov ecx,[buf_png.w]
			mov edx,[buf_png.h]
			imul ecx,edx
			imul ecx,3
			shr ecx,2 ;OpenGL buffer align to 4
			rep movsd

			;(3) encode image
			stdcall [img_encode], eax, LIBIMG_FORMAT_PNG, 0
			test eax,eax
			jz @f
				mov [png_data],eax
				mov [png_size],ecx
		@@:
		;(4)
		stdcall [img_destroy],ebx

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// list of format id's
#define LIBIMG_FORMAT_BMP       1
#define LIBIMG_FORMAT_ICO       2
#define LIBIMG_FORMAT_CUR       3
#define LIBIMG_FORMAT_GIF       4
#define LIBIMG_FORMAT_PNG       5
#define LIBIMG_FORMAT_JPEG      6
#define LIBIMG_FORMAT_TGA       7
#define LIBIMG_FORMAT_PCX       8
#define LIBIMG_FORMAT_XCF       9
#define LIBIMG_FORMAT_TIFF     10
#define LIBIMG_FORMAT_PNM      11
#define LIBIMG_FORMAT_WBMP     12
#define LIBIMG_FORMAT_XBM      13
#define LIBIMG_FORMAT_Z80      14

struct Image
{
	DWORD Checksum; // ((Width ROL 16) OR Height) XOR Data[0]        ; ignored so far
	DWORD Width;
	DWORD Height;
	DWORD Next;
	DWORD Previous;
	DWORD Type;     // one of Image.bppN
	DWORD Data;
	DWORD Palette;  // used iff Type eq Image.bpp1, Image.bpp2, Image.bpp4 or Image.bpp8i
	DWORD Extended;
	DWORD Flags;    // bitfield
	DWORD Delay;    // used iff Image.IsAnimated is set in Flags
};

// values for Image.Type
// must be consecutive to allow fast switch on Image.Type in support functions
#define Image.bpp8i  1  // indexed
#define Image.bpp24  2
#define Image.bpp32  3
#define Image.bpp15  4
#define Image.bpp16  5
#define Image.bpp1   6
#define Image.bpp8g  7  // grayscale
#define Image.bpp2i  8
#define Image.bpp4i  9
#define Image.bpp8a 10  // grayscale with alpha channel; application layer only!!! kernel doesn't handle this image type, libimg can only create and destroy such images

...

void SaveImage(DWORD* pointer_buf, DWORD width, DWORD height, DWORD bit)
{
	DWORD* png_data=0;
	DWORD png_size=0;

	if(bit!=24)
	{
		... not support ...
		return;
	}
	//(1) create image struct
	Image* h_img = img_create(buf_png.w, buf_png.h, Image.bpp24);
	if(h_img)
	{
		//(2) copy foto to image buffer
		memcpy(h_img->Data, pointer_buf, width*height*3);

		//(3) encode image
		png_data = img_encode(eax, LIBIMG_FORMAT_PNG, 0);
		if(png_data) png_size = ECX;
	}
	//(4)
	img_destroy(h_img);
	if(png_size)
	{
		... save image to file (use function 70) ...
		... png_data - данные файла с изображением ...
		... png_size - размер файла с изображением ...
	}
}