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103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
/*
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* The Python Imaging Library
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* $Id$
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*
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* declarations for the OpenJPEG codec interface.
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*
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* Copyright (c) 2014 by Coriolis Systems Limited
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* Copyright (c) 2014 by Alastair Houghton
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*/
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#include <openjpeg.h>
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/* 1MB for now */
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#define BUFFER_SIZE OPJ_J2K_STREAM_CHUNK_SIZE
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/* -------------------------------------------------------------------- */
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/* Decoder */
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/* -------------------------------------------------------------------- */
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typedef struct {
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/* CONFIGURATION */
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/* File descriptor, if available; otherwise, -1 */
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int fd;
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/* File pointer, when opened */
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FILE * pfile;
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/* Length of data, if available; otherwise, -1 */
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off_t length;
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/* Specify the desired format */
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OPJ_CODEC_FORMAT format;
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/* Set to divide image resolution by 2**reduce. */
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int reduce;
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/* Set to limit the number of quality layers to decode (0 = all layers) */
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int layers;
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/* PRIVATE CONTEXT (set by decoder) */
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const char *error_msg;
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} JPEG2KDECODESTATE;
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/* -------------------------------------------------------------------- */
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/* Encoder */
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/* -------------------------------------------------------------------- */
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typedef struct {
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/* CONFIGURATION */
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/* File descriptor, if available; otherwise, -1 */
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int fd;
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/* File pointer, when opened */
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FILE * pfile;
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/* Specify the desired format */
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OPJ_CODEC_FORMAT format;
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/* Image offset */
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int offset_x, offset_y;
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/* Tile information */
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int tile_offset_x, tile_offset_y;
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int tile_size_x, tile_size_y;
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/* Quality layers (a sequence of numbers giving *either* rates or dB) */
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int quality_is_in_db;
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PyObject *quality_layers;
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/* Number of resolutions (DWT decompositions + 1 */
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int num_resolutions;
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/* Code block size */
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int cblk_width, cblk_height;
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/* Precinct size */
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int precinct_width, precinct_height;
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/* Compression style */
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int irreversible;
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/* Progression order (LRCP/RLCP/RPCL/PCRL/CPRL) */
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OPJ_PROG_ORDER progression;
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/* Cinema mode */
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OPJ_CINEMA_MODE cinema_mode;
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/* PRIVATE CONTEXT (set by decoder) */
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const char *error_msg;
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} JPEG2KENCODESTATE;
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/*
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* Local Variables:
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* c-basic-offset: 4
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* End:
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*
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*/
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