implemented basic read/write of xbox textures

tools/txdwrite/txdwrite.cpp

@@ -0,0 +1,50 @@
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <cassert>
+#include <new>
+
+#include <rw.h>
+#include <src/gtaplg.h>
+
+using namespace std;
+using namespace rw;
+
+int
+main(int argc, char *argv[])
+{
+	gta::attachPlugins();
+	rw::xbox::registerNativeRaster();
+	rw::d3d::registerNativeRaster();
+
+//	rw::version = 0x33002;
+//	rw::platform = rw::PLATFORM_PS2;
+//	rw::platform = rw::PLATFORM_OGL;
+	rw::platform = rw::PLATFORM_XBOX;
+//	rw::platform = rw::PLATFORM_D3D8;
+//	rw::platform = rw::PLATFORM_D3D9;
+
+	if(argc < 2){
+		printf("usage: %s in.txd\n", argv[0]);
+		return 0;
+	}
+
+	rw::StreamFile in;
+	if(in.open(argv[1], "rb") == NULL){
+		printf("couldn't open file\n");
+		return 1;
+	}
+	rw::findChunk(&in, rw::ID_TEXDICTIONARY, NULL, NULL);
+	rw::TexDictionary *txd;
+	txd = rw::TexDictionary::streamRead(&in);
+	assert(txd);
+	in.close();
+	rw::currentTexDictionary = txd;
+
+	rw::StreamFile out;
+	out.open("out.txd", "wb");
+	txd->streamWrite(&out);
+	out.close();
+
+	return 0;
+}