Merge to XFA: Remove duplicate core/include/thirdparties headers.

core/include/thirdparties/libjpeg/jpeglib.h

-/*
- * jpeglib.h
- *
- * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README file.
- *
- * This file defines the application interface for the JPEG library.
- * Most applications using the library need only include this file,
- * and perhaps jerror.h if they want to know the exact error codes.
- */
-
-#ifndef JPEGLIB_H
-#define JPEGLIB_H
-
-#define FOXIT_PREFIX(origName)  FPDFAPIJPEG_##origName
-
-#define jcopy_block_row FOXIT_PREFIX(jcopy_block_row)
-#define jcopy_sample_rows FOXIT_PREFIX(jcopy_sample_rows)
-#define jdiv_round_up FOXIT_PREFIX(jdiv_round_up)
-#define jinit_1pass_quantizer FOXIT_PREFIX(jinit_1pass_quantizer)
-#define jinit_2pass_quantizer FOXIT_PREFIX(jinit_2pass_quantizer)
-#define jinit_c_coef_controller FOXIT_PREFIX(jinit_c_coef_controller)
-#define jinit_c_main_controller FOXIT_PREFIX(jinit_c_main_controller)
-#define jinit_c_master_control FOXIT_PREFIX(jinit_c_master_control)
-#define jinit_c_prep_controller FOXIT_PREFIX(jinit_c_prep_controller)
-#define jinit_color_converter FOXIT_PREFIX(jinit_color_converter)
-#define jinit_color_deconverter FOXIT_PREFIX(jinit_color_deconverter)
-#define jinit_compress_master FOXIT_PREFIX(jinit_compress_master)
-#define jinit_d_coef_controller FOXIT_PREFIX(jinit_d_coef_controller)
-#define jinit_d_main_controller FOXIT_PREFIX(jinit_d_main_controller)
-#define jinit_d_post_controller FOXIT_PREFIX(jinit_d_post_controller)
-#define jinit_downsampler FOXIT_PREFIX(jinit_downsampler)
-#define jinit_forward_dct FOXIT_PREFIX(jinit_forward_dct)
-#define jinit_huff_decoder FOXIT_PREFIX(jinit_huff_decoder)
-#define jinit_huff_encoder FOXIT_PREFIX(jinit_huff_encoder)
-#define jinit_input_controller FOXIT_PREFIX(jinit_input_controller)
-#define jinit_inverse_dct FOXIT_PREFIX(jinit_inverse_dct)
-#define jinit_marker_reader FOXIT_PREFIX(jinit_marker_reader)
-#define jinit_marker_writer FOXIT_PREFIX(jinit_marker_writer)
-#define jinit_master_decompress FOXIT_PREFIX(jinit_master_decompress)
-#define jinit_memory_mgr FOXIT_PREFIX(jinit_memory_mgr)
-#define jinit_merged_upsampler FOXIT_PREFIX(jinit_merged_upsampler)
-#define jinit_phuff_decoder FOXIT_PREFIX(jinit_phuff_decoder)
-#define jinit_phuff_encoder FOXIT_PREFIX(jinit_phuff_encoder)
-#define jinit_upsampler FOXIT_PREFIX(jinit_upsampler)
-#define jpeg_CreateCompress FOXIT_PREFIX(jpeg_CreateCompress)
-#define jpeg_CreateDecompress FOXIT_PREFIX(jpeg_CreateDecompress)
-#define jpeg_abort FOXIT_PREFIX(jpeg_abort)
-#define jpeg_abort_compress FOXIT_PREFIX(jpeg_abort_compress)
-#define jpeg_abort_decompress FOXIT_PREFIX(jpeg_abort_decompress)
-#define jpeg_add_quant_table FOXIT_PREFIX(jpeg_add_quant_table)
-#define jpeg_alloc_huff_table FOXIT_PREFIX(jpeg_alloc_huff_table)
-#define jpeg_alloc_quant_table FOXIT_PREFIX(jpeg_alloc_quant_table)
-#define jpeg_calc_output_dimensions FOXIT_PREFIX(jpeg_calc_output_dimensions)
-#define jpeg_consume_input FOXIT_PREFIX(jpeg_consume_input)
-#define jpeg_default_colorspace FOXIT_PREFIX(jpeg_default_colorspace)
-#define jpeg_destroy FOXIT_PREFIX(jpeg_destroy)
-#define jpeg_destroy_compress FOXIT_PREFIX(jpeg_destroy_compress)
-#define jpeg_destroy_decompress FOXIT_PREFIX(jpeg_destroy_decompress)
-#define jpeg_fdct_ifast FOXIT_PREFIX(jpeg_fdct_ifast)
-#define jpeg_fdct_islow FOXIT_PREFIX(jpeg_fdct_islow)
-#define jpeg_fill_bit_buffer FOXIT_PREFIX(jpeg_fill_bit_buffer)
-#define jpeg_finish_compress FOXIT_PREFIX(jpeg_finish_compress)
-#define jpeg_finish_decompress FOXIT_PREFIX(jpeg_finish_decompress)
-#define jpeg_finish_output FOXIT_PREFIX(jpeg_finish_output)
-#define jpeg_free_large FOXIT_PREFIX(jpeg_free_large)
-#define jpeg_free_small FOXIT_PREFIX(jpeg_free_small)
-#define jpeg_gen_optimal_table FOXIT_PREFIX(jpeg_gen_optimal_table)
-#define jpeg_get_large FOXIT_PREFIX(jpeg_get_large)
-#define jpeg_get_small FOXIT_PREFIX(jpeg_get_small)
-#define jpeg_has_multiple_scans FOXIT_PREFIX(jpeg_has_multiple_scans)
-#define jpeg_huff_decode FOXIT_PREFIX(jpeg_huff_decode)
-#define jpeg_idct_1x1 FOXIT_PREFIX(jpeg_idct_1x1)
-#define jpeg_idct_2x2 FOXIT_PREFIX(jpeg_idct_2x2)
-#define jpeg_idct_4x4 FOXIT_PREFIX(jpeg_idct_4x4)
-#define jpeg_idct_float FOXIT_PREFIX(jpeg_idct_float)
-#define jpeg_idct_ifast FOXIT_PREFIX(jpeg_idct_ifast)
-#define jpeg_idct_islow FOXIT_PREFIX(jpeg_idct_islow)
-#define jpeg_input_complete FOXIT_PREFIX(jpeg_input_complete)
-#define jpeg_make_c_derived_tbl FOXIT_PREFIX(jpeg_make_c_derived_tbl)
-#define jpeg_make_d_derived_tbl FOXIT_PREFIX(jpeg_make_d_derived_tbl)
-#define jpeg_mem_available FOXIT_PREFIX(jpeg_mem_available)
-#define jpeg_mem_init FOXIT_PREFIX(jpeg_mem_init)
-#define jpeg_mem_term FOXIT_PREFIX(jpeg_mem_term)
-#define jpeg_natural_order FOXIT_PREFIX(jpeg_natural_order)
-#define jpeg_new_colormap FOXIT_PREFIX(jpeg_new_colormap)
-#define jpeg_open_backing_store FOXIT_PREFIX(jpeg_open_backing_store)
-#define jpeg_quality_scaling FOXIT_PREFIX(jpeg_quality_scaling)
-#define jpeg_read_coefficients FOXIT_PREFIX(jpeg_read_coefficients)
-#define jpeg_read_header FOXIT_PREFIX(jpeg_read_header)
-#define jpeg_read_raw_data FOXIT_PREFIX(jpeg_read_raw_data)
-#define jpeg_read_scanlines FOXIT_PREFIX(jpeg_read_scanlines)
-#define jpeg_resync_to_restart FOXIT_PREFIX(jpeg_resync_to_restart)
-#define jpeg_save_markers FOXIT_PREFIX(jpeg_save_markers)
-#define jpeg_set_colorspace FOXIT_PREFIX(jpeg_set_colorspace)
-#define jpeg_set_defaults FOXIT_PREFIX(jpeg_set_defaults)
-#define jpeg_set_linear_quality FOXIT_PREFIX(jpeg_set_linear_quality)
-#define jpeg_set_marker_processor FOXIT_PREFIX(jpeg_set_marker_processor)
-#define jpeg_set_quality FOXIT_PREFIX(jpeg_set_quality)
-#define jpeg_simple_progression FOXIT_PREFIX(jpeg_simple_progression)
-#define jpeg_start_compress FOXIT_PREFIX(jpeg_start_compress)
-#define jpeg_start_decompress FOXIT_PREFIX(jpeg_start_decompress)
-#define jpeg_start_output FOXIT_PREFIX(jpeg_start_output)
-#define jpeg_std_error FOXIT_PREFIX(jpeg_std_error)
-#define jpeg_std_message_table FOXIT_PREFIX(jpeg_std_message_table)
-#define jpeg_stdio_src FOXIT_PREFIX(jpeg_stdio_src)
-#define jpeg_suppress_tables FOXIT_PREFIX(jpeg_suppress_tables)
-#define jpeg_write_m_byte FOXIT_PREFIX(jpeg_write_m_byte)
-#define jpeg_write_m_header FOXIT_PREFIX(jpeg_write_m_header)
-#define jpeg_write_marker FOXIT_PREFIX(jpeg_write_marker)
-#define jpeg_write_raw_data FOXIT_PREFIX(jpeg_write_raw_data)
-#define jpeg_write_scanlines FOXIT_PREFIX(jpeg_write_scanlines)
-#define jpeg_write_tables FOXIT_PREFIX(jpeg_write_tables)
-#define jround_up FOXIT_PREFIX(jround_up)
-#define jzero_far FOXIT_PREFIX(jzero_far)
-
- /*
- * First we include the configuration files that record how this
- * installation of the JPEG library is set up.  jconfig.h can be
- * generated automatically for many systems.  jmorecfg.h contains
- * manual configuration options that most people need not worry about.
- */
-
-#ifndef JCONFIG_INCLUDED        /* in case jinclude.h already did */
-#include "jconfig.h"            /* widely used configuration options */
-#endif
-#include "jmorecfg.h"           /* seldom changed options */
-
-
-/* Version ID for the JPEG library.
- * Might be useful for tests like "#if JPEG_LIB_VERSION >= 60".
- */
-
-#define JPEG_LIB_VERSION  62    /* Version 6b */
-
-
-/* Various constants determining the sizes of things.
- * All of these are specified by the JPEG standard, so don't change them
- * if you want to be compatible.
- */
-
-#define DCTSIZE             8   /* The basic DCT block is 8x8 samples */
-#define DCTSIZE2            64  /* DCTSIZE squared; # of elements in a block */
-#define NUM_QUANT_TBLS      4   /* Quantization tables are numbered 0..3 */
-#define NUM_HUFF_TBLS       4   /* Huffman tables are numbered 0..3 */
-#define NUM_ARITH_TBLS      16  /* Arith-coding tables are numbered 0..15 */
-#define MAX_COMPS_IN_SCAN   4   /* JPEG limit on # of components in one scan */
-#define MAX_SAMP_FACTOR     4   /* JPEG limit on sampling factors */
-/* Unfortunately, some bozo at Adobe saw no reason to be bound by the standard;
- * the PostScript DCT filter can emit files with many more than 10 blocks/MCU.
- * If you happen to run across such a file, you can up D_MAX_BLOCKS_IN_MCU
- * to handle it.  We even let you do this from the jconfig.h file.  However,
- * we strongly discourage changing C_MAX_BLOCKS_IN_MCU; just because Adobe
- * sometimes emits noncompliant files doesn't mean you should too.
- */
-#define C_MAX_BLOCKS_IN_MCU   10 /* compressor's limit on blocks per MCU */
-#ifndef D_MAX_BLOCKS_IN_MCU
-#define D_MAX_BLOCKS_IN_MCU   10 /* decompressor's limit on blocks per MCU */
-#endif
-
-
-/* Data structures for images (arrays of samples and of DCT coefficients).
- * On 80x86 machines, the image arrays are too big for near pointers,
- * but the pointer arrays can fit in near memory.
- */
-
-typedef JSAMPLE  *JSAMPROW;     /* ptr to one image row of pixel samples. */
-typedef JSAMPROW *JSAMPARRAY;   /* ptr to some rows (a 2-D sample array) */
-typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */
-
-typedef JCOEF JBLOCK[DCTSIZE2]; /* one block of coefficients */
-typedef JBLOCK  *JBLOCKROW;     /* pointer to one row of coefficient blocks */
-typedef JBLOCKROW *JBLOCKARRAY;         /* a 2-D array of coefficient blocks */
-typedef JBLOCKARRAY *JBLOCKIMAGE;       /* a 3-D array of coefficient blocks */
-
-typedef JCOEF  *JCOEFPTR;       /* useful in a couple of places */
-
-
-/* Types for JPEG compression parameters and working tables. */
-
-
-/* DCT coefficient quantization tables. */
-
-typedef struct {
-  /* This array gives the coefficient quantizers in natural array order
-   * (not the zigzag order in which they are stored in a JPEG DQT marker).
-   * CAUTION: IJG versions prior to v6a kept this array in zigzag order.
-   */
-  UINT16 quantval[DCTSIZE2];    /* quantization step for each coefficient */
-  /* This field is used only during compression.  It's initialized FALSE when
-   * the table is created, and set TRUE when it's been output to the file.
-   * You could suppress output of a table by setting this to TRUE.
-   * (See jpeg_suppress_tables for an example.)
-   */
-  boolean sent_table;           /* TRUE when table has been output */
-} JQUANT_TBL;
-
-
-/* Huffman coding tables. */
-
-typedef struct {
-  /* These two fields directly represent the contents of a JPEG DHT marker */
-  UINT8 bits[17];               /* bits[k] = # of symbols with codes of */
-                                /* length k bits; bits[0] is unused */
-  UINT8 huffval[256];           /* The symbols, in order of incr code length */
-  /* This field is used only during compression.  It's initialized FALSE when
-   * the table is created, and set TRUE when it's been output to the file.
-   * You could suppress output of a table by setting this to TRUE.
-   * (See jpeg_suppress_tables for an example.)
-   */
-  boolean sent_table;           /* TRUE when table has been output */
-} JHUFF_TBL;
-
-
-/* Basic info about one component (color channel). */
-
-typedef struct {
-  /* These values are fixed over the whole image. */
-  /* For compression, they must be supplied by parameter setup; */
-  /* for decompression, they are read from the SOF marker. */
-  int component_id;             /* identifier for this component (0..255) */
-  int component_index;          /* its index in SOF or cinfo->comp_info[] */
-  int h_samp_factor;            /* horizontal sampling factor (1..4) */
-  int v_samp_factor;            /* vertical sampling factor (1..4) */
-  int quant_tbl_no;             /* quantization table selector (0..3) */
-  /* These values may vary between scans. */
-  /* For compression, they must be supplied by parameter setup; */
-  /* for decompression, they are read from the SOS marker. */
-  /* The decompressor output side may not use these variables. */
-  int dc_tbl_no;                /* DC entropy table selector (0..3) */
-  int ac_tbl_no;                /* AC entropy table selector (0..3) */
-  
-  /* Remaining fields should be treated as private by applications. */
-  
-  /* These values are computed during compression or decompression startup: */
-  /* Component's size in DCT blocks.
-   * Any dummy blocks added to complete an MCU are not counted; therefore
-   * these values do not depend on whether a scan is interleaved or not.
-   */
-  JDIMENSION width_in_blocks;
-  JDIMENSION height_in_blocks;
-  /* Size of a DCT block in samples.  Always DCTSIZE for compression.
-   * For decompression this is the size of the output from one DCT block,
-   * reflecting any scaling we choose to apply during the IDCT step.
-   * Values of 1,2,4,8 are likely to be supported.  Note that different
-   * components may receive different IDCT scalings.
-   */
-  int DCT_scaled_size;
-  /* The downsampled dimensions are the component's actual, unpadded number
-   * of samples at the main buffer (preprocessing/compression interface), thus
-   * downsampled_width = ceil(image_width * Hi/Hmax)
-   * and similarly for height.  For decompression, IDCT scaling is included, so
-   * downsampled_width = ceil(image_width * Hi/Hmax * DCT_scaled_size/DCTSIZE)
-   */
-  JDIMENSION downsampled_width;  /* actual width in samples */
-  JDIMENSION downsampled_height; /* actual height in samples */
-  /* This flag is used only for decompression.  In cases where some of the
-   * components will be ignored (eg grayscale output from YCbCr image),
-   * we can skip most computations for the unused components.
-   */
-  boolean component_needed;     /* do we need the value of this component? */
-
-  /* These values are computed before starting a scan of the component. */
-  /* The decompressor output side may not use these variables. */
-  int MCU_width;                /* number of blocks per MCU, horizontally */
-  int MCU_height;               /* number of blocks per MCU, vertically */
-  int MCU_blocks;               /* MCU_width * MCU_height */
-  int MCU_sample_width;         /* MCU width in samples, MCU_width*DCT_scaled_size */
-  int last_col_width;           /* # of non-dummy blocks across in last MCU */
-  int last_row_height;          /* # of non-dummy blocks down in last MCU */
-
-  /* Saved quantization table for component; NULL if none yet saved.
-   * See jdinput.c comments about the need for this information.
-   * This field is currently used only for decompression.
-   */
-  JQUANT_TBL * quant_table;
-
-  /* Private per-component storage for DCT or IDCT subsystem. */
-  void * dct_table;
-} jpeg_component_info;
-
-
-/* The script for encoding a multiple-scan file is an array of these: */
-
-typedef struct {
-  int comps_in_scan;            /* number of components encoded in this scan */
-  int component_index[MAX_COMPS_IN_SCAN]; /* their SOF/comp_info[] indexes */
-  int Ss, Se;                   /* progressive JPEG spectral selection parms */
-  int Ah, Al;                   /* progressive JPEG successive approx. parms */
-} jpeg_scan_info;
-
-/* The decompressor can save APPn and COM markers in a list of these: */
-
-typedef struct jpeg_marker_struct  * jpeg_saved_marker_ptr;
-
-struct jpeg_marker_struct {
-  jpeg_saved_marker_ptr next;   /* next in list, or NULL */
-  UINT8 marker;                 /* marker code: JPEG_COM, or JPEG_APP0+n */
-  unsigned int original_length; /* # bytes of data in the file */
-  unsigned int data_length;     /* # bytes of data saved at data[] */
-  JOCTET  * data;               /* the data contained in the marker */
-  /* the marker length word is not counted in data_length or original_length */
-};
-
-/* Known color spaces. */
-
-typedef enum {
-        JCS_UNKNOWN,            /* error/unspecified */
-        JCS_GRAYSCALE,          /* monochrome */
-        JCS_RGB,                /* red/green/blue */
-        JCS_YCbCr,              /* Y/Cb/Cr (also known as YUV) */
-        JCS_CMYK,               /* C/M/Y/K */
-        JCS_YCCK                /* Y/Cb/Cr/K */
-} J_COLOR_SPACE;
-
-/* DCT/IDCT algorithm options. */
-
-typedef enum {
-        JDCT_ISLOW,             /* slow but accurate integer algorithm */
-        JDCT_IFAST,             /* faster, less accurate integer method */
-        JDCT_FLOAT              /* floating-point: accurate, fast on fast HW */
-} J_DCT_METHOD;
-
-#ifndef JDCT_DEFAULT            /* may be overridden in jconfig.h */
-#define JDCT_DEFAULT  JDCT_ISLOW
-#endif
-#ifndef JDCT_FASTEST            /* may be overridden in jconfig.h */
-#define JDCT_FASTEST  JDCT_IFAST
-#endif
-
-/* Dithering options for decompression. */
-
-typedef enum {
-        JDITHER_NONE,           /* no dithering */
-        JDITHER_ORDERED,        /* simple ordered dither */
-        JDITHER_FS              /* Floyd-Steinberg error diffusion dither */
-} J_DITHER_MODE;
-
-
-/* Common fields between JPEG compression and decompression master structs. */
-
-#define jpeg_common_fields \
-  struct jpeg_error_mgr * err;  /* Error handler module */\
-  struct jpeg_memory_mgr * mem; /* Memory manager module */\
-  struct jpeg_progress_mgr * progress; /* Progress monitor, or NULL if none */\
-  void * client_data;           /* Available for use by application */\
-  boolean is_decompressor;      /* So common code can tell which is which */\
-  int global_state              /* For checking call sequence validity */
-
-/* Routines that are to be used by both halves of the library are declared
- * to receive a pointer to this structure.  There are no actual instances of
- * jpeg_common_struct, only of jpeg_compress_struct and jpeg_decompress_struct.
- */
-struct jpeg_common_struct {
-  jpeg_common_fields;           /* Fields common to both master struct types */
-  /* Additional fields follow in an actual jpeg_compress_struct or
-   * jpeg_decompress_struct.  All three structs must agree on these
-   * initial fields!  (This would be a lot cleaner in C++.)
-   */
-};
-
-typedef struct jpeg_common_struct * j_common_ptr;
-typedef struct jpeg_compress_struct * j_compress_ptr;
-typedef struct jpeg_decompress_struct * j_decompress_ptr;
-
-
-/* Master record for a compression instance */
-
-struct jpeg_compress_struct {
-  jpeg_common_fields;           /* Fields shared with jpeg_decompress_struct */
-
-  /* Destination for compressed data */
-  struct jpeg_destination_mgr * dest;
-
-  /* Description of source image --- these fields must be filled in by
-   * outer application before starting compression.  in_color_space must
-   * be correct before you can even call jpeg_set_defaults().
-   */
-
-  JDIMENSION image_width;       /* input image width */
-  JDIMENSION image_height;      /* input image height */
-  int input_components;         /* # of color components in input image */
-  J_COLOR_SPACE in_color_space; /* colorspace of input image */
-
-  double input_gamma;           /* image gamma of input image */
-
-  /* Compression parameters --- these fields must be set before calling
-   * jpeg_start_compress().  We recommend calling jpeg_set_defaults() to
-   * initialize everything to reasonable defaults, then changing anything
-   * the application specifically wants to change.  That way you won't get
-   * burnt when new parameters are added.  Also note that there are several
-   * helper routines to simplify changing parameters.
-   */
-
-  int data_precision;           /* bits of precision in image data */
-
-  int num_components;           /* # of color components in JPEG image */
-  J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */
-
-  jpeg_component_info * comp_info;
-  /* comp_info[i] describes component that appears i'th in SOF */
-  
-  JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS];
-  /* ptrs to coefficient quantization tables, or NULL if not defined */
-  
-  JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS];
-  JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS];
-  /* ptrs to Huffman coding tables, or NULL if not defined */
-  
-  UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */
-  UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */
-  UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */
-
-  int num_scans;                /* # of entries in scan_info array */
-  const jpeg_scan_info * scan_info; /* script for multi-scan file, or NULL */
-  /* The default value of scan_info is NULL, which causes a single-scan
-   * sequential JPEG file to be emitted.  To create a multi-scan file,
-   * set num_scans and scan_info to point to an array of scan definitions.
-   */
-
-  boolean raw_data_in;          /* TRUE=caller supplies downsampled data */
-  boolean arith_code;           /* TRUE=arithmetic coding, FALSE=Huffman */
-  boolean optimize_coding;      /* TRUE=optimize entropy encoding parms */
-  boolean CCIR601_sampling;     /* TRUE=first samples are cosited */
-  int smoothing_factor;         /* 1..100, or 0 for no input smoothing */
-  J_DCT_METHOD dct_method;      /* DCT algorithm selector */
-
-  /* The restart interval can be specified in absolute MCUs by setting
-   * restart_interval, or in MCU rows by setting restart_in_rows
-   * (in which case the correct restart_interval will be figured
-   * for each scan).
-   */
-  unsigned int restart_interval; /* MCUs per restart, or 0 for no restart */
-  int restart_in_rows;          /* if > 0, MCU rows per restart interval */
-
-  /* Parameters controlling emission of special markers. */
-
-  boolean write_JFIF_header;    /* should a JFIF marker be written? */
-  UINT8 JFIF_major_version;     /* What to write for the JFIF version number */
-  UINT8 JFIF_minor_version;
-  /* These three values are not used by the JPEG code, merely copied */
-  /* into the JFIF APP0 marker.  density_unit can be 0 for unknown, */
-  /* 1 for dots/inch, or 2 for dots/cm.  Note that the pixel aspect */
-  /* ratio is defined by X_density/Y_density even when density_unit=0. */
-  UINT8 density_unit;           /* JFIF code for pixel size units */
-  UINT16 X_density;             /* Horizontal pixel density */
-  UINT16 Y_density;             /* Vertical pixel density */
-  boolean write_Adobe_marker;   /* should an Adobe marker be written? */
-  
-  /* State variable: index of next scanline to be written to
-   * jpeg_write_scanlines().  Application may use this to control its
-   * processing loop, e.g., "while (next_scanline < image_height)".
-   */
-
-  JDIMENSION next_scanline;     /* 0 .. image_height-1  */
-
-  /* Remaining fields are known throughout compressor, but generally
-   * should not be touched by a surrounding application.
-   */
-
-  /*
-   * These fields are computed during compression startup
-   */
-  boolean progressive_mode;     /* TRUE if scan script uses progressive mode */
-  int max_h_samp_factor;        /* largest h_samp_factor */
-  int max_v_samp_factor;        /* largest v_samp_factor */
-
-  JDIMENSION total_iMCU_rows;   /* # of iMCU rows to be input to coef ctlr */
-  /* The coefficient controller receives data in units of MCU rows as defined
-   * for fully interleaved scans (whether the JPEG file is interleaved or not).
-   * There are v_samp_factor * DCTSIZE sample rows of each component in an
-   * "iMCU" (interleaved MCU) row.
-   */
-  
-  /*
-   * These fields are valid during any one scan.
-   * They describe the components and MCUs actually appearing in the scan.
-   */
-  int comps_in_scan;            /* # of JPEG components in this scan */
-  jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN];
-  /* *cur_comp_info[i] describes component that appears i'th in SOS */
-  
-  JDIMENSION MCUs_per_row;      /* # of MCUs across the image */
-  JDIMENSION MCU_rows_in_scan;  /* # of MCU rows in the image */
-  
-  int blocks_in_MCU;            /* # of DCT blocks per MCU */
-  int MCU_membership[C_MAX_BLOCKS_IN_MCU];
-  /* MCU_membership[i] is index in cur_comp_info of component owning */
-  /* i'th block in an MCU */
-
-  int Ss, Se, Ah, Al;           /* progressive JPEG parameters for scan */
-
-  /*
-   * Links to compression subobjects (methods and private variables of modules)
-   */
-  struct jpeg_comp_master * master;
-  struct jpeg_c_main_controller * main;
-  struct jpeg_c_prep_controller * prep;
-  struct jpeg_c_coef_controller * coef;
-  struct jpeg_marker_writer * marker;
-  struct jpeg_color_converter * cconvert;
-  struct jpeg_downsampler * downsample;
-  struct jpeg_forward_dct * fdct;
-  struct jpeg_entropy_encoder * entropy;
-  jpeg_scan_info * script_space; /* workspace for jpeg_simple_progression */
-  int script_space_size;
-};
-
-
-/* Master record for a decompression instance */
-
-struct jpeg_decompress_struct {
-  jpeg_common_fields;           /* Fields shared with jpeg_compress_struct */
-
-  /* Source of compressed data */
-  struct jpeg_source_mgr * src;
-
-  /* Basic description of image --- filled in by jpeg_read_header(). */
-  /* Application may inspect these values to decide how to process image. */
-
-  JDIMENSION image_width;       /* nominal image width (from SOF marker) */
-  JDIMENSION image_height;      /* nominal image height */
-  int num_components;           /* # of color components in JPEG image */
-  J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */
-
-  /* Decompression processing parameters --- these fields must be set before
-   * calling jpeg_start_decompress().  Note that jpeg_read_header() initializes
-   * them to default values.
-   */
-
-  J_COLOR_SPACE out_color_space; /* colorspace for output */
-
-  unsigned int scale_num, scale_denom; /* fraction by which to scale image */
-
-  double output_gamma;          /* image gamma wanted in output */
-
-  boolean buffered_image;       /* TRUE=multiple output passes */
-  boolean raw_data_out;         /* TRUE=downsampled data wanted */
-
-  J_DCT_METHOD dct_method;      /* IDCT algorithm selector */
-  boolean do_fancy_upsampling;  /* TRUE=apply fancy upsampling */
-  boolean do_block_smoothing;   /* TRUE=apply interblock smoothing */
-
-  boolean quantize_colors;      /* TRUE=colormapped output wanted */
-  /* the following are ignored if not quantize_colors: */
-  J_DITHER_MODE dither_mode;    /* type of color dithering to use */
-  boolean two_pass_quantize;    /* TRUE=use two-pass color quantization */
-  int desired_number_of_colors; /* max # colors to use in created colormap */
-  /* these are significant only in buffered-image mode: */
-  boolean enable_1pass_quant;   /* enable future use of 1-pass quantizer */
-  boolean enable_external_quant;/* enable future use of external colormap */
-  boolean enable_2pass_quant;   /* enable future use of 2-pass quantizer */
-
-  /* Description of actual output image that will be returned to application.
-   * These fields are computed by jpeg_start_decompress().
-   * You can also use jpeg_calc_output_dimensions() to determine these values
-   * in advance of calling jpeg_start_decompress().
-   */
-
-  JDIMENSION output_width;      /* scaled image width */
-  JDIMENSION output_height;     /* scaled image height */
-  int out_color_components;     /* # of color components in out_color_space */
-  int output_components;        /* # of color components returned */
-  /* output_components is 1 (a colormap index) when quantizing colors;
-   * otherwise it equals out_color_components.
-   */
-  int rec_outbuf_height;        /* min recommended height of scanline buffer */
-  /* If the buffer passed to jpeg_read_scanlines() is less than this many rows
-   * high, space and time will be wasted due to unnecessary data copying.
-   * Usually rec_outbuf_height will be 1 or 2, at most 4.
-   */
-
-  /* When quantizing colors, the output colormap is described by these fields.
-   * The application can supply a colormap by setting colormap non-NULL before
-   * calling jpeg_start_decompress; otherwise a colormap is created during
-   * jpeg_start_decompress or jpeg_start_output.
-   * The map has out_color_components rows and actual_number_of_colors columns.
-   */
-  int actual_number_of_colors;  /* number of entries in use */
-  JSAMPARRAY colormap;          /* The color map as a 2-D pixel array */
-
-  /* State variables: these variables indicate the progress of decompression.
-   * The application may examine these but must not modify them.
-   */
-
-  /* Row index of next scanline to be read from jpeg_read_scanlines().
-   * Application may use this to control its processing loop, e.g.,
-   * "while (output_scanline < output_height)".
-   */
-  JDIMENSION output_scanline;   /* 0 .. output_height-1  */
-
-  /* Current input scan number and number of iMCU rows completed in scan.
-   * These indicate the progress of the decompressor input side.
-   */
-  int input_scan_number;        /* Number of SOS markers seen so far */
-  JDIMENSION input_iMCU_row;    /* Number of iMCU rows completed */
-
-  /* The "output scan number" is the notional scan being displayed by the
-   * output side.  The decompressor will not allow output scan/row number
-   * to get ahead of input scan/row, but it can fall arbitrarily far behind.
-   */
-  int output_scan_number;       /* Nominal scan number being displayed */
-  JDIMENSION output_iMCU_row;   /* Number of iMCU rows read */
-
-  /* Current progression status.  coef_bits[c][i] indicates the precision
-   * with which component c's DCT coefficient i (in zigzag order) is known.
-   * It is -1 when no data has yet been received, otherwise it is the point
-   * transform (shift) value for the most recent scan of the coefficient
-   * (thus, 0 at completion of the progression).
-   * This pointer is NULL when reading a non-progressive file.
-   */
-  int (*coef_bits)[DCTSIZE2];   /* -1 or current Al value for each coef */
-
-  /* Internal JPEG parameters --- the application usually need not look at
-   * these fields.  Note that the decompressor output side may not use
-   * any parameters that can change between scans.
-   */
-
-  /* Quantization and Huffman tables are carried forward across input
-   * datastreams when processing abbreviated JPEG datastreams.
-   */
-
-  JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS];
-  /* ptrs to coefficient quantization tables, or NULL if not defined */
-
-  JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS];
-  JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS];
-  /* ptrs to Huffman coding tables, or NULL if not defined */
-
-  /* These parameters are never carried across datastreams, since they
-   * are given in SOF/SOS markers or defined to be reset by SOI.
-   */
-
-  int data_precision;           /* bits of precision in image data */
-
-  jpeg_component_info * comp_info;
-  /* comp_info[i] describes component that appears i'th in SOF */
-
-  boolean progressive_mode;     /* TRUE if SOFn specifies progressive mode */
-  boolean arith_code;           /* TRUE=arithmetic coding, FALSE=Huffman */
-
-  UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */
-  UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */
-  UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */
-
-  unsigned int restart_interval; /* MCUs per restart interval, or 0 for no restart */
-
-  /* These fields record data obtained from optional markers recognized by
-   * the JPEG library.
-   */
-  boolean saw_JFIF_marker;      /* TRUE iff a JFIF APP0 marker was found */
-  /* Data copied from JFIF marker; only valid if saw_JFIF_marker is TRUE: */
-  UINT8 JFIF_major_version;     /* JFIF version number */
-  UINT8 JFIF_minor_version;
-  UINT8 density_unit;           /* JFIF code for pixel size units */
-  UINT16 X_density;             /* Horizontal pixel density */
-  UINT16 Y_density;             /* Vertical pixel density */
-  boolean saw_Adobe_marker;     /* TRUE iff an Adobe APP14 marker was found */
-  UINT8 Adobe_transform;        /* Color transform code from Adobe marker */
-
-  boolean CCIR601_sampling;     /* TRUE=first samples are cosited */
-
-  /* Aside from the specific data retained from APPn markers known to the
-   * library, the uninterpreted contents of any or all APPn and COM markers
-   * can be saved in a list for examination by the application.
-   */
-  jpeg_saved_marker_ptr marker_list; /* Head of list of saved markers */
-
-  /* Remaining fields are known throughout decompressor, but generally
-   * should not be touched by a surrounding application.
-   */
-
-  /*
-   * These fields are computed during decompression startup
-   */
-  int max_h_samp_factor;        /* largest h_samp_factor */
-  int max_v_samp_factor;        /* largest v_samp_factor */
-
-  int min_DCT_scaled_size;      /* smallest DCT_scaled_size of any component */
-
-  JDIMENSION total_iMCU_rows;   /* # of iMCU rows in image */
-  /* The coefficient controller's input and output progress is measured in
-   * units of "iMCU" (interleaved MCU) rows.  These are the same as MCU rows
-   * in fully interleaved JPEG scans, but are used whether the scan is
-   * interleaved or not.  We define an iMCU row as v_samp_factor DCT block
-   * rows of each component.  Therefore, the IDCT output contains
-   * v_samp_factor*DCT_scaled_size sample rows of a component per iMCU row.
-   */
-
-  JSAMPLE * sample_range_limit; /* table for fast range-limiting */
-
-  /*
-   * These fields are valid during any one scan.
-   * They describe the components and MCUs actually appearing in the scan.
-   * Note that the decompressor output side must not use these fields.
-   */
-  int comps_in_scan;            /* # of JPEG components in this scan */
-  jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN];
-  /* *cur_comp_info[i] describes component that appears i'th in SOS */
-
-  JDIMENSION MCUs_per_row;      /* # of MCUs across the image */
-  JDIMENSION MCU_rows_in_scan;  /* # of MCU rows in the image */
-
-  int blocks_in_MCU;            /* # of DCT blocks per MCU */
-  int MCU_membership[D_MAX_BLOCKS_IN_MCU];
-  /* MCU_membership[i] is index in cur_comp_info of component owning */
-  /* i'th block in an MCU */
-
-  int Ss, Se, Ah, Al;           /* progressive JPEG parameters for scan */
-
-  /* This field is shared between entropy decoder and marker parser.
-   * It is either zero or the code of a JPEG marker that has been
-   * read from the data source, but has not yet been processed.
-   */
-  int unread_marker;
-
-  /*
-   * Links to decompression subobjects (methods, private variables of modules)
-   */
-  struct jpeg_decomp_master * master;
-  struct jpeg_d_main_controller * main;
-  struct jpeg_d_coef_controller * coef;
-  struct jpeg_d_post_controller * post;
-  struct jpeg_input_controller * inputctl;
-  struct jpeg_marker_reader * marker;
-  struct jpeg_entropy_decoder * entropy;
-  struct jpeg_inverse_dct * idct;
-  struct jpeg_upsampler * upsample;
-  struct jpeg_color_deconverter * cconvert;
-  struct jpeg_color_quantizer * cquantize;
-};
-
-
-/* "Object" declarations for JPEG modules that may be supplied or called
- * directly by the surrounding application.
- * As with all objects in the JPEG library, these structs only define the
- * publicly visible methods and state variables of a module.  Additional
- * private fields may exist after the public ones.
- */
-
-
-/* Error handler object */
-
-struct jpeg_error_mgr {
-  /* Error exit handler: does not return to caller */
-  JMETHOD(void, error_exit, (j_common_ptr cinfo));
-  /* Conditionally emit a trace or warning message */
-  JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level));
-  /* Routine that actually outputs a trace or error message */
-  JMETHOD(void, output_message, (j_common_ptr cinfo));
-  /* Format a message string for the most recent JPEG error or message */
-  JMETHOD(void, format_message, (j_common_ptr cinfo, char * buffer));
-#define JMSG_LENGTH_MAX  200    /* recommended size of format_message buffer */
-  /* Reset error state variables at start of a new image */
-  JMETHOD(void, reset_error_mgr, (j_common_ptr cinfo));
-  
-  /* The message ID code and any parameters are saved here.
-   * A message can have one string parameter or up to 8 int parameters.
-   */
-  int msg_code;
-#define JMSG_STR_PARM_MAX  80
-  union {
-    int i[8];
-    char s[JMSG_STR_PARM_MAX];
-  } msg_parm;
-  
-  /* Standard state variables for error facility */
-  
-  int trace_level;              /* max msg_level that will be displayed */
-  
-  /* For recoverable corrupt-data errors, we emit a warning message,
-   * but keep going unless emit_message chooses to abort.  emit_message
-   * should count warnings in num_warnings.  The surrounding application
-   * can check for bad data by seeing if num_warnings is nonzero at the
-   * end of processing.
-   */
-  long num_warnings;            /* number of corrupt-data warnings */
-
-  /* These fields point to the table(s) of error message strings.
-   * An application can change the table pointer to switch to a different
-   * message list (typically, to change the language in which errors are
-   * reported).  Some applications may wish to add additional error codes
-   * that will be handled by the JPEG library error mechanism; the second
-   * table pointer is used for this purpose.
-   *
-   * First table includes all errors generated by JPEG library itself.
-   * Error code 0 is reserved for a "no such error string" message.
-   */
-  const char * const * jpeg_message_table; /* Library errors */
-  int last_jpeg_message;    /* Table contains strings 0..last_jpeg_message */
-  /* Second table can be added by application (see cjpeg/djpeg for example).
-   * It contains strings numbered first_addon_message..last_addon_message.
-   */
-  const char * const * addon_message_table; /* Non-library errors */
-  int first_addon_message;      /* code for first string in addon table */
-  int last_addon_message;       /* code for last string in addon table */
-};
-
-
-/* Progress monitor object */
-
-struct jpeg_progress_mgr {
-  JMETHOD(void, progress_monitor, (j_common_ptr cinfo));
-
-  long pass_counter;            /* work units completed in this pass */
-  long pass_limit;              /* total number of work units in this pass */
-  int completed_passes;         /* passes completed so far */
-  int total_passes;             /* total number of passes expected */
-};
-
-
-/* Data destination object for compression */
-
-struct jpeg_destination_mgr {
-  JOCTET * next_output_byte;    /* => next byte to write in buffer */
-  size_t free_in_buffer;        /* # of byte spaces remaining in buffer */
-
-  JMETHOD(void, init_destination, (j_compress_ptr cinfo));
-  JMETHOD(boolean, empty_output_buffer, (j_compress_ptr cinfo));
-  JMETHOD(void, term_destination, (j_compress_ptr cinfo));
-};
-
-
-/* Data source object for decompression */
-
-struct jpeg_source_mgr {
-  const JOCTET * next_input_byte; /* => next byte to read from buffer */
-  size_t bytes_in_buffer;       /* # of bytes remaining in buffer */
-
-  JMETHOD(void, init_source, (j_decompress_ptr cinfo));
-  JMETHOD(boolean, fill_input_buffer, (j_decompress_ptr cinfo));
-  JMETHOD(void, skip_input_data, (j_decompress_ptr cinfo, long num_bytes));
-  JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo, int desired));
-  JMETHOD(void, term_source, (j_decompress_ptr cinfo));
-};
-
-
-/* Memory manager object.
- * Allocates "small" objects (a few K total), "large" objects (tens of K),
- * and "really big" objects (virtual arrays with backing store if needed).
- * The memory manager does not allow individual objects to be freed; rather,
- * each created object is assigned to a pool, and whole pools can be freed
- * at once.  This is faster and more convenient than remembering exactly what
- * to free, especially where malloc()/free() are not too speedy.
- * NB: alloc routines never return NULL.  They exit to error_exit if not
- * successful.
- */
-
-#define JPOOL_PERMANENT 0       /* lasts until master record is destroyed */
-#define JPOOL_IMAGE     1       /* lasts until done with image/datastream */
-#define JPOOL_NUMPOOLS  2
-
-typedef struct jvirt_sarray_control * jvirt_sarray_ptr;
-typedef struct jvirt_barray_control * jvirt_barray_ptr;
-
-
-struct jpeg_memory_mgr {
-  /* Method pointers */
-  JMETHOD(void *, alloc_small, (j_common_ptr cinfo, int pool_id,
-                                size_t sizeofobject));
-  JMETHOD(void  *, alloc_large, (j_common_ptr cinfo, int pool_id,
-                                     size_t sizeofobject));
-  JMETHOD(JSAMPARRAY, alloc_sarray, (j_common_ptr cinfo, int pool_id,
-                                     JDIMENSION samplesperrow,
-                                     JDIMENSION numrows));
-  JMETHOD(JBLOCKARRAY, alloc_barray, (j_common_ptr cinfo, int pool_id,
-                                      JDIMENSION blocksperrow,
-                                      JDIMENSION numrows));
-  JMETHOD(jvirt_sarray_ptr, request_virt_sarray, (j_common_ptr cinfo,
-                                                  int pool_id,
-                                                  boolean pre_zero,
-                                                  JDIMENSION samplesperrow,
-                                                  JDIMENSION numrows,
-                                                  JDIMENSION maxaccess));
-  JMETHOD(jvirt_barray_ptr, request_virt_barray, (j_common_ptr cinfo,
-                                                  int pool_id,
-                                                  boolean pre_zero,
-                                                  JDIMENSION blocksperrow,
-                                                  JDIMENSION numrows,
-                                                  JDIMENSION maxaccess));
-  JMETHOD(void, realize_virt_arrays, (j_common_ptr cinfo));
-  JMETHOD(JSAMPARRAY, access_virt_sarray, (j_common_ptr cinfo,
-                                           jvirt_sarray_ptr ptr,
-                                           JDIMENSION start_row,
-                                           JDIMENSION num_rows,
-                                           boolean writable));
-  JMETHOD(JBLOCKARRAY, access_virt_barray, (j_common_ptr cinfo,
-                                            jvirt_barray_ptr ptr,
-                                            JDIMENSION start_row,
-                                            JDIMENSION num_rows,
-                                            boolean writable));
-  JMETHOD(void, free_pool, (j_common_ptr cinfo, int pool_id));
-  JMETHOD(void, self_destruct, (j_common_ptr cinfo));
-
-  /* Limit on memory allocation for this JPEG object.  (Note that this is
-   * merely advisory, not a guaranteed maximum; it only affects the space
-   * used for virtual-array buffers.)  May be changed by outer application
-   * after creating the JPEG object.
-   */
-  long max_memory_to_use;
-
-  /* Maximum allocation request accepted by alloc_large. */
-  long max_alloc_chunk;
-};
-
-
-/* Routine signature for application-supplied marker processing methods.
- * Need not pass marker code since it is stored in cinfo->unread_marker.
- */
-typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo));
-
-
-/* Declarations for routines called by application.
- * The JPP macro hides prototype parameters from compilers that can't cope.
- * Note JPP requires double parentheses.
- */
-
-#ifdef HAVE_PROTOTYPES
-#define JPP(arglist)    arglist
-#else
-#define JPP(arglist)    ()
-#endif
-
-
-/* Short forms of external names for systems with brain-damaged linkers.
- * We shorten external names to be unique in the first six letters, which
- * is good enough for all known systems.
- * (If your compiler itself needs names to be unique in less than 15 
- * characters, you are out of luck.  Get a better compiler.)
- */
-
-#ifdef NEED_SHORT_EXTERNAL_NAMES
-#define jpeg_std_error          jStdError
-#define jpeg_CreateCompress     jCreaCompress
-#define jpeg_CreateDecompress   jCreaDecompress
-#define jpeg_destroy_compress   jDestCompress
-#define jpeg_destroy_decompress jDestDecompress
-#define jpeg_stdio_dest         jStdDest
-#define jpeg_stdio_src          jStdSrc
-#define jpeg_set_defaults       jSetDefaults
-#define jpeg_set_colorspace     jSetColorspace
-#define jpeg_default_colorspace jDefColorspace
-#define jpeg_set_quality        jSetQuality
-#define jpeg_set_linear_quality jSetLQuality
-#define jpeg_add_quant_table    jAddQuantTable
-#define jpeg_quality_scaling    jQualityScaling
-#define jpeg_simple_progression jSimProgress
-#define jpeg_suppress_tables    jSuppressTables
-#define jpeg_alloc_quant_table  jAlcQTable
-#define jpeg_alloc_huff_table   jAlcHTable
-#define jpeg_start_compress     jStrtCompress
-#define jpeg_write_scanlines    jWrtScanlines
-#define jpeg_finish_compress    jFinCompress
-#define jpeg_write_raw_data     jWrtRawData
-#define jpeg_write_marker       jWrtMarker
-#define jpeg_write_m_header     jWrtMHeader
-#define jpeg_write_m_byte       jWrtMByte
-#define jpeg_write_tables       jWrtTables
-#define jpeg_read_header        jReadHeader
-#define jpeg_start_decompress   jStrtDecompress
-#define jpeg_read_scanlines     jReadScanlines
-#define jpeg_finish_decompress  jFinDecompress
-#define jpeg_read_raw_data      jReadRawData
-#define jpeg_has_multiple_scans jHasMultScn
-#define jpeg_start_output       jStrtOutput
-#define jpeg_finish_output      jFinOutput
-#define jpeg_input_complete     jInComplete
-#define jpeg_new_colormap       jNewCMap
-#define jpeg_consume_input      jConsumeInput
-#define jpeg_calc_output_dimensions     jCalcDimensions
-#define jpeg_save_markers       jSaveMarkers
-#define jpeg_set_marker_processor       jSetMarker
-#define jpeg_read_coefficients  jReadCoefs
-#define jpeg_write_coefficients jWrtCoefs
-#define jpeg_copy_critical_parameters   jCopyCrit
-#define jpeg_abort_compress     jAbrtCompress
-#define jpeg_abort_decompress   jAbrtDecompress
-#define jpeg_abort              jAbort
-#define jpeg_destroy            jDestroy
-#define jpeg_resync_to_restart  jResyncRestart
-#endif /* NEED_SHORT_EXTERNAL_NAMES */
-
-
-/* Default error-management setup */
-EXTERN(struct jpeg_error_mgr *) jpeg_std_error
-        JPP((struct jpeg_error_mgr * err));
-
-/* Initialization of JPEG compression objects.
- * jpeg_create_compress() and jpeg_create_decompress() are the exported
- * names that applications should call.  These expand to calls on
- * jpeg_CreateCompress and jpeg_CreateDecompress with additional information
- * passed for version mismatch checking.
- * NB: you must set up the error-manager BEFORE calling jpeg_create_xxx.
- */
-#define jpeg_create_compress(cinfo) \
-    jpeg_CreateCompress((cinfo), JPEG_LIB_VERSION, \
-                        (size_t) sizeof(struct jpeg_compress_struct))
-#define jpeg_create_decompress(cinfo) \
-    jpeg_CreateDecompress((cinfo), JPEG_LIB_VERSION, \
-                          (size_t) sizeof(struct jpeg_decompress_struct))
-EXTERN(void) jpeg_CreateCompress JPP((j_compress_ptr cinfo,
-                                      int version, size_t structsize));
-EXTERN(void) jpeg_CreateDecompress JPP((j_decompress_ptr cinfo,
-                                        int version, size_t structsize));
-/* Destruction of JPEG compression objects */
-EXTERN(void) jpeg_destroy_compress JPP((j_compress_ptr cinfo));
-EXTERN(void) jpeg_destroy_decompress JPP((j_decompress_ptr cinfo));
-
-#if 0
-/* Standard data source and destination managers: stdio streams. */
-/* Caller is responsible for opening the file before and closing after. */
-EXTERN(void) jpeg_stdio_dest JPP((j_compress_ptr cinfo, FXSYS_FILE * outfile));
-EXTERN(void) jpeg_stdio_src JPP((j_decompress_ptr cinfo, FXSYS_FILE * infile));
-#endif
-
-/* Default parameter setup for compression */
-EXTERN(void) jpeg_set_defaults JPP((j_compress_ptr cinfo));
-/* Compression parameter setup aids */
-EXTERN(void) jpeg_set_colorspace JPP((j_compress_ptr cinfo,
-                                      J_COLOR_SPACE colorspace));
-EXTERN(void) jpeg_default_colorspace JPP((j_compress_ptr cinfo));
-EXTERN(void) jpeg_set_quality JPP((j_compress_ptr cinfo, int quality,
-                                   boolean force_baseline));
-EXTERN(void) jpeg_set_linear_quality JPP((j_compress_ptr cinfo,
-                                          int scale_factor,
-                                          boolean force_baseline));
-EXTERN(void) jpeg_add_quant_table JPP((j_compress_ptr cinfo, int which_tbl,
-                                       const unsigned int *basic_table,
-                                       int scale_factor,
-                                       boolean force_baseline));
-EXTERN(int) jpeg_quality_scaling JPP((int quality));
-EXTERN(void) jpeg_simple_progression JPP((j_compress_ptr cinfo));
-EXTERN(void) jpeg_suppress_tables JPP((j_compress_ptr cinfo,
-                                       boolean suppress));
-EXTERN(JQUANT_TBL *) jpeg_alloc_quant_table JPP((j_common_ptr cinfo));
-EXTERN(JHUFF_TBL *) jpeg_alloc_huff_table JPP((j_common_ptr cinfo));
-
-/* Main entry points for compression */
-EXTERN(void) jpeg_start_compress JPP((j_compress_ptr cinfo,
-                                      boolean write_all_tables));
-EXTERN(JDIMENSION) jpeg_write_scanlines JPP((j_compress_ptr cinfo,
-                                             JSAMPARRAY scanlines,
-                                             JDIMENSION num_lines));
-EXTERN(void) jpeg_finish_compress JPP((j_compress_ptr cinfo));
-
-/* Replaces jpeg_write_scanlines when writing raw downsampled data. */
-EXTERN(JDIMENSION) jpeg_write_raw_data JPP((j_compress_ptr cinfo,
-                                            JSAMPIMAGE data,
-                                            JDIMENSION num_lines));
-
-/* Write a special marker.  See libjpeg.doc concerning safe usage. */
-EXTERN(void) jpeg_write_marker
-        JPP((j_compress_ptr cinfo, int marker,
-             const JOCTET * dataptr, unsigned int datalen));
-/* Same, but piecemeal. */
-EXTERN(void) jpeg_write_m_header
-        JPP((j_compress_ptr cinfo, int marker, unsigned int datalen));
-EXTERN(void) jpeg_write_m_byte
-        JPP((j_compress_ptr cinfo, int val));
-
-/* Alternate compression function: just write an abbreviated table file */
-EXTERN(void) jpeg_write_tables JPP((j_compress_ptr cinfo));
-
-/* Decompression startup: read start of JPEG datastream to see what's there */
-EXTERN(int) jpeg_read_header JPP((j_decompress_ptr cinfo,
-                                  boolean require_image));
-/* Return value is one of: */
-#define JPEG_SUSPENDED          0 /* Suspended due to lack of input data */
-#define JPEG_HEADER_OK          1 /* Found valid image datastream */
-#define JPEG_HEADER_TABLES_ONLY 2 /* Found valid table-specs-only datastream */
-/* If you pass require_image = TRUE (normal case), you need not check for
- * a TABLES_ONLY return code; an abbreviated file will cause an error exit.
- * JPEG_SUSPENDED is only possible if you use a data source module that can
- * give a suspension return (the stdio source module doesn't).
- */
-
-/* Main entry points for decompression */
-EXTERN(boolean) jpeg_start_decompress JPP((j_decompress_ptr cinfo));
-EXTERN(JDIMENSION) jpeg_read_scanlines JPP((j_decompress_ptr cinfo,
-                                            JSAMPARRAY scanlines,
-                                            JDIMENSION max_lines));
-EXTERN(boolean) jpeg_finish_decompress JPP((j_decompress_ptr cinfo));
-
-/* Replaces jpeg_read_scanlines when reading raw downsampled data. */
-EXTERN(JDIMENSION) jpeg_read_raw_data JPP((j_decompress_ptr cinfo,
-                                           JSAMPIMAGE data,
-                                           JDIMENSION max_lines));
-
-/* Additional entry points for buffered-image mode. */
-EXTERN(boolean) jpeg_has_multiple_scans JPP((j_decompress_ptr cinfo));
-EXTERN(boolean) jpeg_start_output JPP((j_decompress_ptr cinfo,
-                                       int scan_number));
-EXTERN(boolean) jpeg_finish_output JPP((j_decompress_ptr cinfo));
-EXTERN(boolean) jpeg_input_complete JPP((j_decompress_ptr cinfo));
-EXTERN(void) jpeg_new_colormap JPP((j_decompress_ptr cinfo));
-EXTERN(int) jpeg_consume_input JPP((j_decompress_ptr cinfo));
-/* Return value is one of: */
-/* #define JPEG_SUSPENDED       0    Suspended due to lack of input data */
-#define JPEG_REACHED_SOS        1 /* Reached start of new scan */
-#define JPEG_REACHED_EOI        2 /* Reached end of image */
-#define JPEG_ROW_COMPLETED      3 /* Completed one iMCU row */
-#define JPEG_SCAN_COMPLETED     4 /* Completed last iMCU row of a scan */
-
-/* Precalculate output dimensions for current decompression parameters. */
-EXTERN(void) jpeg_calc_output_dimensions JPP((j_decompress_ptr cinfo));
-
-/* Control saving of COM and APPn markers into marker_list. */
-EXTERN(void) jpeg_save_markers
-        JPP((j_decompress_ptr cinfo, int marker_code,
-             unsigned int length_limit));
-
-/* Install a special processing method for COM or APPn markers. */
-EXTERN(void) jpeg_set_marker_processor
-        JPP((j_decompress_ptr cinfo, int marker_code,
-             jpeg_marker_parser_method routine));
-
-/* Read or write raw DCT coefficients --- useful for lossless transcoding. */
-EXTERN(jvirt_barray_ptr *) jpeg_read_coefficients JPP((j_decompress_ptr cinfo));
-EXTERN(void) jpeg_write_coefficients JPP((j_compress_ptr cinfo,
-                                          jvirt_barray_ptr * coef_arrays));
-EXTERN(void) jpeg_copy_critical_parameters JPP((j_decompress_ptr srcinfo,
-                                                j_compress_ptr dstinfo));
-
-/* If you choose to abort compression or decompression before completing
- * jpeg_finish_(de)compress, then you need to clean up to release memory,
- * temporary files, etc.  You can just call jpeg_destroy_(de)compress
- * if you're done with the JPEG object, but if you want to clean it up and
- * reuse it, call this:
- */
-EXTERN(void) jpeg_abort_compress JPP((j_compress_ptr cinfo));
-EXTERN(void) jpeg_abort_decompress JPP((j_decompress_ptr cinfo));
-
-/* Generic versions of jpeg_abort and jpeg_destroy that work on either
- * flavor of JPEG object.  These may be more convenient in some places.
- */
-EXTERN(void) jpeg_abort JPP((j_common_ptr cinfo));
-EXTERN(void) jpeg_destroy JPP((j_common_ptr cinfo));
-
-/* Default restart-marker-resync procedure for use by data source modules */
-EXTERN(boolean) jpeg_resync_to_restart JPP((j_decompress_ptr cinfo,
-                                            int desired));
-
-
-/* These marker codes are exported since applications and data source modules
- * are likely to want to use them.
- */
-
-#define JPEG_RST0       0xD0    /* RST0 marker code */
-#define JPEG_EOI        0xD9    /* EOI marker code */
-#define JPEG_APP0       0xE0    /* APP0 marker code */
-#define JPEG_COM        0xFE    /* COM marker code */
-
-
-/* If we have a brain-damaged compiler that emits warnings (or worse, errors)
- * for structure definitions that are never filled in, keep it quiet by
- * supplying dummy definitions for the various substructures.
- */
-
-#ifdef INCOMPLETE_TYPES_BROKEN
-#ifndef JPEG_INTERNALS          /* will be defined in jpegint.h */
-struct jvirt_sarray_control { long dummy; };
-struct jvirt_barray_control { long dummy; };
-struct jpeg_comp_master { long dummy; };
-struct jpeg_c_main_controller { long dummy; };
-struct jpeg_c_prep_controller { long dummy; };
-struct jpeg_c_coef_controller { long dummy; };
-struct jpeg_marker_writer { long dummy; };
-struct jpeg_color_converter { long dummy; };
-struct jpeg_downsampler { long dummy; };
-struct jpeg_forward_dct { long dummy; };
-struct jpeg_entropy_encoder { long dummy; };
-struct jpeg_decomp_master { long dummy; };
-struct jpeg_d_main_controller { long dummy; };
-struct jpeg_d_coef_controller { long dummy; };
-struct jpeg_d_post_controller { long dummy; };
-struct jpeg_input_controller { long dummy; };
-struct jpeg_marker_reader { long dummy; };
-struct jpeg_entropy_decoder { long dummy; };
-struct jpeg_inverse_dct { long dummy; };
-struct jpeg_upsampler { long dummy; };
-struct jpeg_color_deconverter { long dummy; };
-struct jpeg_color_quantizer { long dummy; };
-#endif /* JPEG_INTERNALS */
-#endif /* INCOMPLETE_TYPES_BROKEN */
-
-
-/*
- * The JPEG library modules define JPEG_INTERNALS before including this file.
- * The internal structure declarations are read only when that is true.
- * Applications using the library should not include jpegint.h, but may wish
- * to include jerror.h.
- */
-
-#ifdef JPEG_INTERNALS
-#include "jpegint.h"            /* fetch private declarations */
-#include "jerror.h"             /* fetch error codes too */
-#endif
-
-#endif /* JPEGLIB_H */