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/* -*- tab-width:4; c-basic-offset:4 indent-tabs-mode:t -*- */
/*
* libopenraw - rafcontainer.cpp
*
* Copyright (C) 2011-2016 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 <fcntl.h>
#include <string.h>
#include <memory>
#include "rafcontainer.hpp"
#include "raffile.hpp"
#include "jfifcontainer.hpp"
#include "ifdfilecontainer.hpp"
#include "rafmetacontainer.hpp"
#include "io/stream.hpp"
#include "io/streamclone.hpp"
namespace OpenRaw {
namespace Internals {
RafContainer::RafContainer(const IO::Stream::Ptr &_file)
: RawContainer(_file, 0)
, m_read(false)
, m_version(0)
, m_jpegPreview(nullptr)
, m_cfaContainer(nullptr)
, m_metaContainer(nullptr)
{
memset((void*)&m_offsetDirectory, 0, sizeof(m_offsetDirectory));
}
RafContainer::~RafContainer()
{
delete m_jpegPreview;
delete m_cfaContainer;
delete m_metaContainer;
}
const std::string & RafContainer::getModel()
{
if(!m_read) {
_readHeader();
}
return m_model;
}
IfdFileContainer * RafContainer::getCfaContainer()
{
if(!m_cfaContainer) {
if(!m_read) {
_readHeader();
}
if(m_offsetDirectory.cfaOffset && m_offsetDirectory.cfaLength) {
m_cfaContainer = new IfdFileContainer(
std::make_shared<IO::StreamClone>(
m_file, m_offsetDirectory.cfaOffset), 0);
}
}
return m_cfaContainer;
}
JfifContainer * RafContainer::getJpegPreview()
{
if(!m_jpegPreview) {
if(!m_read) {
_readHeader();
}
if(m_offsetDirectory.jpegOffset && m_offsetDirectory.jpegLength) {
m_jpegPreview = new JfifContainer(
std::make_shared<IO::StreamClone>(
m_file, m_offsetDirectory.jpegOffset), 0);
}
}
return m_jpegPreview;
}
RafMetaContainer * RafContainer::getMetaContainer()
{
if(!m_metaContainer) {
if(!m_read) {
_readHeader();
}
if(m_offsetDirectory.metaOffset && m_offsetDirectory.metaLength) {
m_metaContainer = new RafMetaContainer(
std::make_shared<IO::StreamClone>(
m_file, m_offsetDirectory.metaOffset));
}
}
return m_metaContainer;
}
bool RafContainer::_readHeader()
{
char magic[29];
char model[33];
magic[28] = 0;
model[32] = 0;
m_read = true;
m_file->read(magic, 28);
if(strncmp(magic, RAF_MAGIC, RAF_MAGIC_LEN) != 0) {
// not a RAF file
return false;
}
setEndian(ENDIAN_BIG);
m_file->read(model, 32);
m_model = model;
auto result = readUInt32(m_file);
if (result.empty()) {
return false;
}
m_version = result.unwrap();
m_file->seek(20, SEEK_CUR);
result = readUInt32(m_file);
if (result.empty()) {
return false;
}
m_offsetDirectory.jpegOffset = result.unwrap();
result = readUInt32(m_file);
if (result.empty()) {
return false;
}
m_offsetDirectory.jpegLength = result.unwrap();
result = readUInt32(m_file);
if (result.empty()) {
return false;
}
m_offsetDirectory.metaOffset = result.unwrap();
result = readUInt32(m_file);
if (result.empty()) {
return false;
}
m_offsetDirectory.metaLength = result.unwrap();
result = readUInt32(m_file);
if (result.empty()) {
return false;
}
m_offsetDirectory.cfaOffset = result.unwrap();
result = readUInt32(m_file);
if (result.empty()) {
return false;
}
m_offsetDirectory.cfaLength = result.unwrap();
return true;
}
}
}
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