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diff --git a/core/src/fxcodec/libjpeg/jpeglib.h b/core/src/fxcodec/libjpeg/jpeglib.h
new file mode 100644
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+++ b/core/src/fxcodec/libjpeg/jpeglib.h
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+/*

+ * 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_color_deconverter FOXIT_PREFIX(jinit_color_deconverter)

+#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_huff_decoder FOXIT_PREFIX(jinit_huff_decoder)

+#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_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_upsampler FOXIT_PREFIX(jinit_upsampler)

+#define jpeg_CreateDecompress FOXIT_PREFIX(jpeg_CreateDecompress)

+#define jpeg_abort FOXIT_PREFIX(jpeg_abort)

+#define jpeg_abort_decompress FOXIT_PREFIX(jpeg_abort_decompress)

+#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_destroy FOXIT_PREFIX(jpeg_destroy)

+#define jpeg_destroy_decompress FOXIT_PREFIX(jpeg_destroy_decompress)

+#define jpeg_fill_bit_buffer FOXIT_PREFIX(jpeg_fill_bit_buffer)

+#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_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_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_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_marker_processor FOXIT_PREFIX(jpeg_set_marker_processor)

+#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 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 */