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/*
* libopenraw - rawcontainer.cpp
*
* Copyright (C) 2006-2007 Hubert Figuiere
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This library 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. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include <iostream>
#include <libopenraw/types.h>
#include "debug.h"
#include "endianutils.h"
#include "io/file.h"
#include "rawcontainer.h"
using namespace Debug;
namespace OpenRaw {
namespace Internals {
RawContainer::RawContainer(IO::Stream *_file, off_t offset)
: m_file(_file),
m_offset(offset),
m_endian(ENDIAN_NULL)
{
m_file->open();
m_file->seek(offset, SEEK_SET);
}
RawContainer::~RawContainer()
{
m_file->close();
}
bool RawContainer::readInt8(IO::Stream *f, int8_t & v)
{
unsigned char buf;
int s = f->read(&buf, 1);
if (s != 1) {
return false;
}
v = buf;
return true;
}
bool RawContainer::readUInt8(IO::Stream *f, uint8_t & v)
{
unsigned char buf;
int s = f->read(&buf, 1);
if (s != 1) {
return false;
}
v = buf;
return true;
}
bool
RawContainer::readInt16(IO::Stream *f, int16_t & v)
{
if (m_endian == ENDIAN_NULL) {
Trace(ERROR) << "null endian\n";
return false;
}
unsigned char buf[2];
int s = f->read(buf, 2);
if (s != 2) {
return false;
}
if (m_endian == ENDIAN_LITTLE) {
v = EL16(buf);
}
else {
v = BE16(buf);
}
return true;
}
bool
RawContainer::readInt32(IO::Stream *f, int32_t & v)
{
if (m_endian == ENDIAN_NULL) {
Trace(ERROR) << "null endian\n";
return false;
}
unsigned char buf[4];
int s = f->read(buf, 4);
if (s != 4) {
Trace(ERROR) << "read " << s << " bytes\n";
return false;
}
if (m_endian == ENDIAN_LITTLE) {
v = EL32(buf);
}
else {
v = BE32(buf);
}
return true;
}
bool
RawContainer::readUInt16(IO::Stream *f, uint16_t & v)
{
if (m_endian == ENDIAN_NULL) {
Trace(ERROR) << "null endian\n";
return false;
}
unsigned char buf[2];
int s = f->read(buf, 2);
if (s != 2) {
return false;
}
if (m_endian == ENDIAN_LITTLE) {
v = EL16(buf);
}
else {
v = BE16(buf);
}
return true;
}
bool
RawContainer::readUInt32(IO::Stream *f, uint32_t & v)
{
if (m_endian == ENDIAN_NULL) {
Trace(ERROR) << "null endian\n";
return false;
}
unsigned char buf[4];
int s = f->read(buf, 4);
if (s != 4) {
return false;
}
if (m_endian == ENDIAN_LITTLE) {
v = EL32(buf);
}
else {
v = BE32(buf);
}
return true;
}
size_t
RawContainer::fetchData(void *buf, const off_t offset,
const size_t buf_size)
{
size_t s;
m_file->seek(offset, SEEK_SET);
s = m_file->read(buf, buf_size);
return s;
}
}
}
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