51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
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#pragma once
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#include "image_reader.h"
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#include <vector>
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#include <stdio.h>
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#include "lib_begin.h"
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namespace cgv {
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namespace media {
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namespace image {
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/// implements the image reader interface for bmp files
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class CGV_API bmp_reader : public abst_image_reader
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{
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protected:
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FILE* fp;
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std::string last_error;
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std::vector<unsigned char> palette;
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public:
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/// default constructor
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bmp_reader();
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/// close file in destructor
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~bmp_reader();
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/// overload to return the type name of this object
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std::string get_type_name() const;
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/// construct a copy of the reader
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abst_image_reader* clone() const;
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/// return a reference to the last error message
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const std::string& get_last_error() const;
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/// read the i-th palette in case of a paletted file format, the standard implementation returns false
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bool read_palette(unsigned int i, const data_view& dv);
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/// return a string containing a colon separated list of extensions that can be read with this reader
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const char* get_supported_extensions() const;
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/// open the file and read the image header in order to determine the data format
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bool open(const std::string& file_name, data_format& df, std::vector<data_format>* palette_formats);
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/// whether the reader supports per line reading (only valid after successful opening an image file
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bool supports_per_line_read() const;
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/// read the next line into the given data pointer, set data format if not yet specified and allocate the data ptr if not yet done
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bool read_line(const data_format& df, const data_view& dv);
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/// read the whole image into the given data pointer, set data format if not yet specified and allocate the data ptr if not yet done. If image file has not been opened yet, open it and close it after reading
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bool read_image(const data_format& df, const data_view& dv);
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/// close the image file
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bool close();
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};
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}
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}
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}
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#include <cgv/config/lib_end.h>
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