C++ (Cpp) iw_get_output_image Examples

Example #1

File: imagew-webp.c Project: hjwhang/imageworsener

int iw_write_webp_file(struct iw_context *ctx, struct iw_iodescr *iodescr)
{
	struct iwwebpwritecontext wctx;
	int retval=0;
	struct iw_image img1;

	iw_set_string_table(ctx,IW_STRINGTABLENUM_WEBP,iwwebp_stringtable);

	memset(&img1,0,sizeof(struct iw_image));
	memset(&wctx,0,sizeof(struct iwwebpwritecontext));

	wctx.ctx = ctx;

	wctx.iodescr=iodescr;

	iw_get_output_image(ctx,&img1);
	wctx.img = &img1;

	if(!iwwebp_write_main(&wctx)) {
		goto done;
	}

	retval=1;

done:
	if(!retval) {
		iw_seterror(ctx,iwwebp_get_string(ctx,iws_webp_write_error));
	}

	if(wctx.iodescr->close_fn)
		(*wctx.iodescr->close_fn)(ctx,wctx.iodescr);

	return retval;
}

Example #2

File: Icons.cpp Project: wighawag/kraffiti

void windowsIcon(iw_context* context, const char* filename) {
	//16x16
	//32x32
	//48x48
	//256x256

	ByteStream stream;
	writeIcoHeader(stream);

	writeIconDirEntry(stream, 16, 16, iconHeaderSize + iconDirEntrySize * 4);
	writeIconDirEntry(stream, 32, 32, iconHeaderSize + iconDirEntrySize * 4 + getBMPSize(16, 16));
	writeIconDirEntry(stream, 48, 48, iconHeaderSize + iconDirEntrySize * 4 + getBMPSize(16, 16) + getBMPSize(32, 32));
	writeIconDirEntry(stream, 256, 256, iconHeaderSize + iconDirEntrySize * 4 + getBMPSize(16, 16) + getBMPSize(32, 32) + getBMPSize(48, 48));

	scale(context, 16, 16);
	iw_image img;
	iw_get_output_image(context, &img);
	writeBMP(stream, &img);

	scale(context, 32, 32);
	iw_get_output_image(context, &img);
	writeBMP(stream, &img);

	scale(context, 48, 48);
	iw_get_output_image(context, &img);
	writeBMP(stream, &img);

	scale(context, 256, 256);
	iw_get_output_image(context, &img);
	iw_iodescr writedescr;
	memset(&writedescr, 0, sizeof(struct iw_iodescr));
	writedescr.write_fn = stream_writefn;
	writedescr.seek_fn = stream_seekfn;
	writedescr.fp = &stream;
	iw_write_file_by_fmt(context, &writedescr, IW_FORMAT_PNG);

	std::vector<byte> pngSize = convertIntToByteArrayLE(static_cast<int>(stream.size()) - (iconHeaderSize + iconDirEntrySize * 4 + getBMPSize(16, 16) + getBMPSize(32, 32) + getBMPSize(48, 48)));
	for (int i = 0; i < 4; ++i) stream.set(i + iconHeaderSize + iconDirEntrySize * 3 + 8, pngSize[i]);

	stream.save(filename);
}