openexr_chunkio.h File Reference

#include "openexr_part.h"
#include <stdint.h>

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Classes
struct	exr_chunk_info_t

Functions
EXR_EXPORT exr_result_t	exr_read_scanline_chunk_info (exr_const_context_t ctxt, int part_index, int y, exr_chunk_info_t *cinfo)
EXR_EXPORT exr_result_t	exr_read_tile_chunk_info (exr_const_context_t ctxt, int part_index, int tilex, int tiley, int levelx, int levely, exr_chunk_info_t *cinfo)
EXR_EXPORT exr_result_t	exr_read_chunk (exr_const_context_t ctxt, int part_index, const exr_chunk_info_t *cinfo, void *packed_data)
EXR_EXPORT exr_result_t	exr_read_deep_chunk (exr_const_context_t ctxt, int part_index, const exr_chunk_info_t *cinfo, void *packed_data, void *sample_data)
EXR_EXPORT exr_result_t	exr_write_scanline_chunk_info (exr_context_t ctxt, int part_index, int y, exr_chunk_info_t *cinfo)
EXR_EXPORT exr_result_t	exr_write_tile_chunk_info (exr_context_t ctxt, int part_index, int tilex, int tiley, int levelx, int levely, exr_chunk_info_t *cinfo)
EXR_EXPORT exr_result_t	exr_write_scanline_chunk (exr_context_t ctxt, int part_index, int y, const void *packed_data, uint64_t packed_size)
EXR_EXPORT exr_result_t	exr_write_deep_scanline_chunk (exr_context_t ctxt, int part_index, int y, const void *packed_data, uint64_t packed_size, uint64_t unpacked_size, const void *sample_data, uint64_t sample_data_size)
EXR_EXPORT exr_result_t	exr_write_tile_chunk (exr_context_t ctxt, int part_index, int tilex, int tiley, int levelx, int levely, const void *packed_data, uint64_t packed_size)
EXR_EXPORT exr_result_t	exr_write_deep_tile_chunk (exr_context_t ctxt, int part_index, int tilex, int tiley, int levelx, int levely, const void *packed_data, uint64_t packed_size, uint64_t unpacked_size, const void *sample_data, uint64_t sample_data_size)

Function Documentation

EXR_EXPORT exr_result_t exr_read_chunk	(	exr_const_context_t	ctxt,
		int	part_index,
		const exr_chunk_info_t *	cinfo,
		void *	packed_data
	)

Read the packed data block for a chunk.

This assumes that the buffer pointed to by packed_data is large enough to hold the chunk block info packed_size bytes.

EXR_EXPORT exr_result_t exr_read_deep_chunk	(	exr_const_context_t	ctxt,
		int	part_index,
		const exr_chunk_info_t *	cinfo,
		void *	packed_data,
		void *	sample_data
	)

Read chunk for deep data.

This allows one to read the packed data, the sample count data, or both. exr_read_chunk also works to read deep data packed data, but this is a routine to get the sample count table and the packed data in one go, or if you want to pre-read the sample count data, you can get just that buffer.

EXR_EXPORT exr_result_t exr_read_scanline_chunk_info	(	exr_const_context_t	ctxt,
		int	part_index,
		int	y,
		exr_chunk_info_t *	cinfo
	)

EXR_EXPORT exr_result_t exr_read_tile_chunk_info	(	exr_const_context_t	ctxt,
		int	part_index,
		int	tilex,
		int	tiley,
		int	levelx,
		int	levely,
		exr_chunk_info_t *	cinfo
	)

EXR_EXPORT exr_result_t exr_write_deep_scanline_chunk	(	exr_context_t	ctxt,
		int	part_index,
		int	y,
		const void *	packed_data,
		uint64_t	packed_size,
		uint64_t	unpacked_size,
		const void *	sample_data,
		uint64_t	sample_data_size
	)

y must the appropriate starting y for the specified chunk.

EXR_EXPORT exr_result_t exr_write_deep_tile_chunk	(	exr_context_t	ctxt,
		int	part_index,
		int	tilex,
		int	tiley,
		int	levelx,
		int	levely,
		const void *	packed_data,
		uint64_t	packed_size,
		uint64_t	unpacked_size,
		const void *	sample_data,
		uint64_t	sample_data_size
	)

EXR_EXPORT exr_result_t exr_write_scanline_chunk	(	exr_context_t	ctxt,
		int	part_index,
		int	y,
		const void *	packed_data,
		uint64_t	packed_size
	)

y must the appropriate starting y for the specified chunk.

EXR_EXPORT exr_result_t exr_write_scanline_chunk_info	(	exr_context_t	ctxt,
		int	part_index,
		int	y,
		exr_chunk_info_t *	cinfo
	)

Initialize a exr_chunk_info_t structure when encoding scanline data (similar to read but does not do anything with a chunk table).

EXR_EXPORT exr_result_t exr_write_tile_chunk	(	exr_context_t	ctxt,
		int	part_index,
		int	tilex,
		int	tiley,
		int	levelx,
		int	levely,
		const void *	packed_data,
		uint64_t	packed_size
	)

EXR_EXPORT exr_result_t exr_write_tile_chunk_info	(	exr_context_t	ctxt,
		int	part_index,
		int	tilex,
		int	tiley,
		int	levelx,
		int	levely,
		exr_chunk_info_t *	cinfo
	)

Initialize a exr_chunk_info_t structure when encoding tiled data (similar to read but does not do anything with a chunk table).