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#ifndef __QPDF_STREAM_HH__
#define __QPDF_STREAM_HH__
#include <qpdf/Types.h>
#include <qpdf/QPDFObject.hh>
#include <qpdf/QPDFObjectHandle.hh>
class Pipeline;
class QPDF;
class QPDF_Stream: public QPDFObject
{
public:
QPDF_Stream(QPDF*, int objid, int generation,
QPDFObjectHandle stream_dict,
qpdf_offset_t offset, size_t length);
virtual ~QPDF_Stream();
virtual std::string unparse();
QPDFObjectHandle getDict() const;
// See comments in QPDFObjectHandle.hh for these methods.
bool pipeStreamData(Pipeline*, bool filter,
bool normalize, bool compress);
PointerHolder<Buffer> getStreamData();
PointerHolder<Buffer> getRawStreamData();
void replaceStreamData(PointerHolder<Buffer> data,
QPDFObjectHandle const& filter,
QPDFObjectHandle const& decode_parms);
void replaceStreamData(
PointerHolder<QPDFObjectHandle::StreamDataProvider> provider,
QPDFObjectHandle const& filter,
QPDFObjectHandle const& decode_parms);
// Replace object ID and generation. This may only be called if
// object ID and generation are 0. It is used by QPDFObjectHandle
// when adding streams to files.
void setObjGen(int objid, int generation);
private:
static std::map<std::string, std::string> filter_abbreviations;
void replaceFilterData(QPDFObjectHandle const& filter,
QPDFObjectHandle const& decode_parms,
size_t length);
bool filterable(std::vector<std::string>& filters,
int& predictor, int& columns, bool& early_code_change);
QPDF* qpdf;
int objid;
int generation;
QPDFObjectHandle stream_dict;
qpdf_offset_t offset;
size_t length;
PointerHolder<Buffer> stream_data;
PointerHolder<QPDFObjectHandle::StreamDataProvider> stream_provider;
};
#endif // __QPDF_STREAM_HH__
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