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/**
* @file
* @author 2012-2013 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#include "TypedArray.h"
#include "uscxml/Convenience.h"
#include <iostream>
#define DATAVIEW_TYPED_GET(type) \
type retVal;\
if (index + _start + sizeof(type) > _blob._impl->size)\
return 0;\
memcpy(&retVal, _blob._impl->data + (_start + index), sizeof(type));
#define DATAVIEW_TYPED_SET(type) \
if (index + _start + sizeof(type) > _blob._impl->size)\
return;\
memcpy(_blob._impl->data + (_start + index), &value, sizeof(type));
namespace uscxml {
ArrayBuffer::ArrayBuffer(unsigned long length) {
_blob = Blob(length);
}
ArrayBuffer::ArrayBuffer(const Blob& blob) : _blob(blob) {
}
ArrayBuffer::ArrayBuffer(void* data, unsigned int size) {
_blob = Blob((const char*)data, size, "application/octet-stream");
}
unsigned long ArrayBuffer::getByteLength() {
if (!_blob)
return 0;
return _blob._impl->size;
}
ArrayBuffer ArrayBuffer::slice(long begin, long end) {
if (!_blob) {
return ArrayBuffer(0);
}
unsigned int realBegin = (begin + _blob._impl->size) % _blob._impl->size;
unsigned int realEnd = (end + _blob._impl->size) % _blob._impl->size;
if (realEnd < realBegin) {
return ArrayBuffer(0);
}
ArrayBuffer arrBuffer(realEnd - realBegin);
memcpy(arrBuffer._blob._impl->data, _blob._impl->data + realBegin, realEnd - realBegin);
return arrBuffer;
}
ArrayBuffer ArrayBuffer::slice(long begin) {
return slice(begin, _blob._impl->size);
}
bool ArrayBuffer::isView(void*) {
return true;
}
ArrayBuffer::operator bool() {
return _blob;
}
ArrayBuffer ArrayBufferView::getBuffer() {
return ArrayBuffer(_blob);
}
DataView::DataView(ArrayBuffer* buffer, unsigned long byteOffset, unsigned long byteLength) {
_start = byteOffset;
if (_start > buffer->_blob._impl->size)
return;
_end = _start + byteLength;
if (_end > buffer->_blob._impl->size)
return;
_blob = buffer->_blob;
}
DataView::DataView(ArrayBuffer* buffer , unsigned long byteOffset) {
_start = byteOffset;
_end = buffer->_blob._impl->size;
if (_start > buffer->_blob._impl->size)
return;
_blob = buffer->_blob;
}
DataView::DataView(ArrayBuffer* buffer) {
_start = 0;
_end = (buffer->_blob._impl->size);
_blob = buffer->_blob;
}
unsigned long DataView::getByteOffset() {
return _start;
}
unsigned long DataView::getByteLength() {
return _end - _start;
}
unsigned long DataView::getLength() {
return _end - _start;
}
int8_t DataView::getInt8(unsigned long index) {
DATAVIEW_TYPED_GET(int8_t);
return retVal;
}
uint8_t DataView::getUint8(unsigned long index) {
DATAVIEW_TYPED_GET(uint8_t);
return retVal;
}
int16_t DataView::getInt16(unsigned long index, bool littleEndian) {
DATAVIEW_TYPED_GET(int16_t);
#ifdef BOOST_LITTLE_ENDIAN
if (littleEndian)
return retVal;
return byte_swap<little_endian, big_endian>(retVal);
#else
if (littleEndian)
return byte_swap<big_endian, little_endian>(retVal);
return retVal;
#endif
}
uint16_t DataView::getUint16(unsigned long index, bool littleEndian) {
DATAVIEW_TYPED_GET(uint16_t);
#ifdef BOOST_LITTLE_ENDIAN
if (littleEndian)
return retVal;
return byte_swap<little_endian, big_endian>(retVal);
#else
if (littleEndian)
return byte_swap<big_endian, little_endian>(retVal);
return retVal;
#endif
}
int32_t DataView::getInt32(unsigned long index, bool littleEndian) {
DATAVIEW_TYPED_GET(int32_t);
#ifdef BOOST_LITTLE_ENDIAN
if (littleEndian)
return retVal;
return byte_swap<little_endian, big_endian>(retVal);
#else
if (littleEndian)
return byte_swap<big_endian, little_endian>(retVal);
return retVal;
#endif
}
uint32_t DataView::getUint32(unsigned long index, bool littleEndian) {
DATAVIEW_TYPED_GET(uint32_t);
#ifdef BOOST_LITTLE_ENDIAN
if (littleEndian)
return retVal;
return byte_swap<little_endian, big_endian>(retVal);
#else
if (littleEndian)
return byte_swap<big_endian, little_endian>(retVal);
return retVal;
#endif
}
float DataView::getFloat32(unsigned long index, bool littleEndian) {
DATAVIEW_TYPED_GET(float);
#ifdef BOOST_LITTLE_ENDIAN
if (littleEndian)
return retVal;
return byte_swap<little_endian, big_endian>(retVal);
#else
if (littleEndian)
return byte_swap<big_endian, little_endian>(retVal);
return retVal;
#endif
}
double DataView::getFloat64(unsigned long index, bool littleEndian) {
DATAVIEW_TYPED_GET(double);
#ifdef BOOST_LITTLE_ENDIAN
if (littleEndian)
return retVal;
return byte_swap<little_endian, big_endian>(retVal);
#else
if (littleEndian)
return byte_swap<big_endian, little_endian>(retVal);
return retVal;
#endif
}
void DataView::setInt8(long index, int8_t value) {
DATAVIEW_TYPED_SET(int8_t);
}
void DataView::setUint8(long index, uint8_t value) {
DATAVIEW_TYPED_SET(uint8_t);
}
void DataView::setInt16(long index, int16_t value, bool littleEndian) {
#ifdef BOOST_LITTLE_ENDIAN
if (!littleEndian)
value = byte_swap<little_endian, big_endian>(value);
#else
if (littleEndian)
value = byte_swap<big_endian, little_endian>(value);
#endif
DATAVIEW_TYPED_SET(int16_t);
}
void DataView::setUint16(long index, uint16_t value, bool littleEndian) {
#ifdef BOOST_LITTLE_ENDIAN
if (!littleEndian)
value = byte_swap<little_endian, big_endian>(value);
#else
if (littleEndian)
value = byte_swap<big_endian, little_endian>(value);
#endif
DATAVIEW_TYPED_SET(uint16_t);
}
void DataView::setInt32(long index, int32_t value, bool littleEndian) {
#ifdef BOOST_LITTLE_ENDIAN
if (!littleEndian)
value = byte_swap<little_endian, big_endian>(value);
#else
if (littleEndian)
value = byte_swap<big_endian, little_endian>(value);
#endif
DATAVIEW_TYPED_SET(int32_t);
}
void DataView::setUint32(long index, uint32_t value, bool littleEndian) {
#ifdef BOOST_LITTLE_ENDIAN
if (!littleEndian)
value = byte_swap<little_endian, big_endian>(value);
#else
if (littleEndian)
value = byte_swap<big_endian, little_endian>(value);
#endif
DATAVIEW_TYPED_SET(uint32_t);
}
void DataView::setFloat32(long index, float value, bool littleEndian) {
#ifdef BOOST_LITTLE_ENDIAN
if (!littleEndian)
value = byte_swap<little_endian, big_endian>(value);
#else
if (littleEndian)
value = byte_swap<big_endian, little_endian>(value);
#endif
DATAVIEW_TYPED_SET(float);
}
void DataView::setFloat64(long index, double value, bool littleEndian) {
#ifdef BOOST_LITTLE_ENDIAN
if (!littleEndian)
value = byte_swap<little_endian, big_endian>(value);
#else
if (littleEndian)
value = byte_swap<big_endian, little_endian>(value);
#endif
DATAVIEW_TYPED_SET(double);
}
}
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