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godot/core/io/stream_peer.cpp
Rémi Verschelde d8223ffa75 Welcome in 2017, dear changelog reader! 
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!

(cherry picked from commit c7bc44d5ad)
2017-01-12 19:15:30 +01:00

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/*************************************************************************/
/* stream_peer.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "stream_peer.h"
#include "io/marshalls.h"
Error StreamPeer::_put_data(const DVector<uint8_t>& p_data) {
int len = p_data.size();
if (len==0)
return OK;
DVector<uint8_t>::Read r = p_data.read();
return put_data(&r[0],len);
}
Array StreamPeer::_put_partial_data(const DVector<uint8_t>& p_data) {
Array ret;
int len = p_data.size();
if (len==0) {
ret.push_back(OK);
ret.push_back(0);
return ret;
}
DVector<uint8_t>::Read r = p_data.read();
int sent;
Error err = put_partial_data(&r[0],len,sent);
if (err!=OK) {
sent=0;
}
ret.push_back(err);
ret.push_back(sent);
return ret;
}
Array StreamPeer::_get_data(int p_bytes) {
Array ret;
DVector<uint8_t> data;
data.resize(p_bytes);
if (data.size()!=p_bytes) {
ret.push_back(ERR_OUT_OF_MEMORY);
ret.push_back(DVector<uint8_t>());
return ret;
}
DVector<uint8_t>::Write w = data.write();
Error err = get_data(&w[0],p_bytes);
w = DVector<uint8_t>::Write();
ret.push_back(err);
ret.push_back(data);
return ret;
}
Array StreamPeer::_get_partial_data(int p_bytes) {
Array ret;
DVector<uint8_t> data;
data.resize(p_bytes);
if (data.size()!=p_bytes) {
ret.push_back(ERR_OUT_OF_MEMORY);
ret.push_back(DVector<uint8_t>());
return ret;
}
DVector<uint8_t>::Write w = data.write();
int received;
Error err = get_partial_data(&w[0],p_bytes,received);
w = DVector<uint8_t>::Write();
if (err!=OK) {
data.resize(0);
} else if (received!=data.size()) {
data.resize(received);
}
ret.push_back(err);
ret.push_back(data);
return ret;
}
void StreamPeer::set_big_endian(bool p_enable) {
big_endian=p_enable;
}
bool StreamPeer::is_big_endian_enabled() const {
return big_endian;
}
void StreamPeer::put_u8(uint8_t p_val) {
put_data((const uint8_t*)&p_val,1);
}
void StreamPeer::put_8(int8_t p_val){
put_data((const uint8_t*)&p_val,1);
}
void StreamPeer::put_u16(uint16_t p_val){
if (big_endian) {
p_val=BSWAP16(p_val);
}
uint8_t buf[2];
encode_uint16(p_val,buf);
put_data(buf,2);
}
void StreamPeer::put_16(int16_t p_val){
if (big_endian) {
p_val=BSWAP16(p_val);
}
uint8_t buf[2];
encode_uint16(p_val,buf);
put_data(buf,2);
}
void StreamPeer::put_u32(uint32_t p_val){
if (big_endian) {
p_val=BSWAP32(p_val);
}
uint8_t buf[4];
encode_uint32(p_val,buf);
put_data(buf,4);
}
void StreamPeer::put_32(int32_t p_val){
if (big_endian) {
p_val=BSWAP32(p_val);
}
uint8_t buf[4];
encode_uint32(p_val,buf);
put_data(buf,4);
}
void StreamPeer::put_u64(uint64_t p_val){
if (big_endian) {
p_val=BSWAP64(p_val);
}
uint8_t buf[8];
encode_uint64(p_val,buf);
put_data(buf,8);
}
void StreamPeer::put_64(int64_t p_val){
if (big_endian) {
p_val=BSWAP64(p_val);
}
uint8_t buf[8];
encode_uint64(p_val,buf);
put_data(buf,8);
}
void StreamPeer::put_float(float p_val){
uint8_t buf[4];
encode_float(p_val,buf);
if (big_endian) {
uint32_t *p32=(uint32_t *)buf;
*p32=BSWAP32(*p32);
}
put_data(buf,4);
}
void StreamPeer::put_double(double p_val){
uint8_t buf[8];
encode_double(p_val,buf);
if (big_endian) {
uint64_t *p64=(uint64_t *)buf;
*p64=BSWAP64(*p64);
}
put_data(buf,8);
}
void StreamPeer::put_utf8_string(const String& p_string) {
CharString cs=p_string.utf8();
put_data((const uint8_t*)cs.get_data(),cs.length());
}
void StreamPeer::put_var(const Variant& p_variant){
int len=0;
Vector<uint8_t> buf;
encode_variant(p_variant,NULL,len);
buf.resize(len);
put_32(len);
encode_variant(p_variant,buf.ptr(),len);
put_data(buf.ptr(),buf.size());
}
uint8_t StreamPeer::get_u8(){
uint8_t buf[1];
get_data(buf,1);
return buf[0];
}
int8_t StreamPeer::get_8(){
uint8_t buf[1];
get_data(buf,1);
return buf[0];
}
uint16_t StreamPeer::get_u16(){
uint8_t buf[2];
get_data(buf,2);
uint16_t r = decode_uint16(buf);
if (big_endian) {
r=BSWAP16(r);
}
return r;
}
int16_t StreamPeer::get_16(){
uint8_t buf[2];
get_data(buf,2);
uint16_t r = decode_uint16(buf);
if (big_endian) {
r=BSWAP16(r);
}
return r;
}
uint32_t StreamPeer::get_u32(){
uint8_t buf[4];
get_data(buf,4);
uint32_t r = decode_uint32(buf);
if (big_endian) {
r=BSWAP32(r);
}
return r;
}
int32_t StreamPeer::get_32(){
uint8_t buf[4];
get_data(buf,4);
uint32_t r = decode_uint32(buf);
if (big_endian) {
r=BSWAP32(r);
}
return r;
}
uint64_t StreamPeer::get_u64(){
uint8_t buf[8];
get_data(buf,8);
uint64_t r = decode_uint64(buf);
if (big_endian) {
r=BSWAP64(r);
}
return r;
}
int64_t StreamPeer::get_64(){
uint8_t buf[8];
get_data(buf,8);
uint64_t r = decode_uint64(buf);
if (big_endian) {
r=BSWAP64(r);
}
return r;
}
float StreamPeer::get_float(){
uint8_t buf[4];
get_data(buf,4);
if (big_endian) {
uint32_t *p32=(uint32_t *)buf;
*p32=BSWAP32(*p32);
}
return decode_float(buf);
}
float StreamPeer::get_double(){
uint8_t buf[8];
get_data(buf,8);
if (big_endian) {
uint64_t *p64=(uint64_t *)buf;
*p64=BSWAP64(*p64);
}
return decode_double(buf);
}
String StreamPeer::get_string(int p_bytes){
ERR_FAIL_COND_V(p_bytes<0,String());
Vector<char> buf;
buf.resize(p_bytes+1);
get_data((uint8_t*)&buf[0],p_bytes);
buf[p_bytes]=0;
return buf.ptr();
}
String StreamPeer::get_utf8_string(int p_bytes){
ERR_FAIL_COND_V(p_bytes<0,String());
Vector<uint8_t> buf;
buf.resize(p_bytes);
get_data(buf.ptr(),p_bytes);
String ret;
ret.parse_utf8((const char*)buf.ptr(),buf.size());
return ret;
}
Variant StreamPeer::get_var(){
int len = get_32();
Vector<uint8_t> var;
var.resize(len);
get_data(var.ptr(),len);
Variant ret;
decode_variant(ret,var.ptr(),len);
return ret;
}
void StreamPeer::_bind_methods() {
ObjectTypeDB::bind_method(_MD("put_data","data"),&StreamPeer::_put_data);
ObjectTypeDB::bind_method(_MD("put_partial_data","data"),&StreamPeer::_put_partial_data);
ObjectTypeDB::bind_method(_MD("get_data","bytes"),&StreamPeer::_get_data);
ObjectTypeDB::bind_method(_MD("get_partial_data","bytes"),&StreamPeer::_get_partial_data);
ObjectTypeDB::bind_method(_MD("get_available_bytes"),&StreamPeer::get_available_bytes);
ObjectTypeDB::bind_method(_MD("set_big_endian","enable"),&StreamPeer::set_big_endian);
ObjectTypeDB::bind_method(_MD("is_big_endian_enabled"),&StreamPeer::is_big_endian_enabled);
ObjectTypeDB::bind_method(_MD("put_8","val"),&StreamPeer::put_8);
ObjectTypeDB::bind_method(_MD("put_u8","val"),&StreamPeer::put_u8);
ObjectTypeDB::bind_method(_MD("put_16","val"),&StreamPeer::put_16);
ObjectTypeDB::bind_method(_MD("put_u16","val"),&StreamPeer::put_u16);
ObjectTypeDB::bind_method(_MD("put_32","val"),&StreamPeer::put_32);
ObjectTypeDB::bind_method(_MD("put_u32","val"),&StreamPeer::put_u32);
ObjectTypeDB::bind_method(_MD("put_64","val"),&StreamPeer::put_64);
ObjectTypeDB::bind_method(_MD("put_u64","val"),&StreamPeer::put_u64);
ObjectTypeDB::bind_method(_MD("put_float","val"),&StreamPeer::put_float);
ObjectTypeDB::bind_method(_MD("put_double","val"),&StreamPeer::put_double);
ObjectTypeDB::bind_method(_MD("put_utf8_string","val"),&StreamPeer::put_utf8_string);
ObjectTypeDB::bind_method(_MD("put_var","val:Variant"),&StreamPeer::put_var);
ObjectTypeDB::bind_method(_MD("get_8"),&StreamPeer::get_8);
ObjectTypeDB::bind_method(_MD("get_u8"),&StreamPeer::get_u8);
ObjectTypeDB::bind_method(_MD("get_16"),&StreamPeer::get_16);
ObjectTypeDB::bind_method(_MD("get_u16"),&StreamPeer::get_u16);
ObjectTypeDB::bind_method(_MD("get_32"),&StreamPeer::get_32);
ObjectTypeDB::bind_method(_MD("get_u32"),&StreamPeer::get_u32);
ObjectTypeDB::bind_method(_MD("get_64"),&StreamPeer::get_64);
ObjectTypeDB::bind_method(_MD("get_u64"),&StreamPeer::get_u64);
ObjectTypeDB::bind_method(_MD("get_float"),&StreamPeer::get_float);
ObjectTypeDB::bind_method(_MD("get_double"),&StreamPeer::get_double);
ObjectTypeDB::bind_method(_MD("get_string","bytes"),&StreamPeer::get_string);
ObjectTypeDB::bind_method(_MD("get_utf8_string","bytes"),&StreamPeer::get_utf8_string);
ObjectTypeDB::bind_method(_MD("get_var:Variant"),&StreamPeer::get_var);
}
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