jpegint.h

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

/*
 * jpegint.h
 *
 * Copyright (C) 1991-1997, 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 provides common declarations for the various JPEG modules.
 * These declarations are considered internal to the JPEG library; most
 * applications using the library shouldn't need to include this file.
 */



#ifdef USE_IPP
/* Declarations for Intel Performance Primitives */
//#include "ipps.h"
//#include "ippi.h"
#include "ippj.h"
#endif


/* Declarations for both compression & decompression */

typedef enum {      /* Operating modes for buffer controllers */
  JBUF_PASS_THRU,   /* Plain stripwise operation */
  /* Remaining modes require a full-image buffer to have been created */
  JBUF_SAVE_SOURCE, /* Run source subobject only, save output */
  JBUF_CRANK_DEST,  /* Run dest subobject only, using saved data */
  JBUF_SAVE_AND_PASS  /* Run both subobjects, save output */
} J_BUF_MODE;

/* Values of global_state field (jdapi.c has some dependencies on ordering!) */
#define CSTATE_START  100 /* after create_compress */
#define CSTATE_SCANNING 101 /* start_compress done, write_scanlines OK */
#define CSTATE_RAW_OK 102 /* start_compress done, write_raw_data OK */
#define CSTATE_WRCOEFS  103 /* jpeg_write_coefficients done */
#define DSTATE_START  200 /* after create_decompress */
#define DSTATE_INHEADER 201 /* reading header markers, no SOS yet */
#define DSTATE_READY  202 /* found SOS, ready for start_decompress */
#define DSTATE_PRELOAD  203 /* reading multiscan file in start_decompress*/
#define DSTATE_PRESCAN  204 /* performing dummy pass for 2-pass quant */
#define DSTATE_SCANNING 205 /* start_decompress done, read_scanlines OK */
#define DSTATE_RAW_OK 206 /* start_decompress done, read_raw_data OK */
#define DSTATE_BUFIMAGE 207 /* expecting jpeg_start_output */
#define DSTATE_BUFPOST  208 /* looking for SOS/EOI in jpeg_finish_output */
#define DSTATE_RDCOEFS  209 /* reading file in jpeg_read_coefficients */
#define DSTATE_STOPPING 210 /* looking for EOI in jpeg_finish_decompress */


/* Declarations for compression modules */

/* Master control module */
struct jpeg_comp_master {
  JMETHOD(void, prepare_for_pass, (j_compress_ptr cinfo));
  JMETHOD(void, pass_startup, (j_compress_ptr cinfo));
  JMETHOD(void, finish_pass, (j_compress_ptr cinfo));

  /* State variables made visible to other modules */
  boolean call_pass_startup;  /* True if pass_startup must be called */
  boolean is_last_pass;   /* True during last pass */
};

/* Main buffer control (downsampled-data buffer) */
struct jpeg_c_main_controller {
  JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
  JMETHOD(void, process_data, (j_compress_ptr cinfo,
             JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
             JDIMENSION in_rows_avail));
};

/* Compression preprocessing (downsampling input buffer control) */
struct jpeg_c_prep_controller {
  JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
  JMETHOD(void, pre_process_data, (j_compress_ptr cinfo,
           JSAMPARRAY input_buf,
           JDIMENSION *in_row_ctr,
           JDIMENSION in_rows_avail,
           JSAMPIMAGE output_buf,
           JDIMENSION *out_row_group_ctr,
           JDIMENSION out_row_groups_avail));
};

/* Coefficient buffer control */
struct jpeg_c_coef_controller {
  JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
  JMETHOD(boolean, compress_data, (j_compress_ptr cinfo,
           JSAMPIMAGE input_buf));
};

/* Colorspace conversion */
struct jpeg_color_converter {
  JMETHOD(void, start_pass, (j_compress_ptr cinfo));
  JMETHOD(void, color_convert, (j_compress_ptr cinfo,
        JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
        JDIMENSION output_row, int num_rows));
};

/* Downsampling */
struct jpeg_downsampler {
  JMETHOD(void, start_pass, (j_compress_ptr cinfo));
  JMETHOD(void, downsample, (j_compress_ptr cinfo,
           JSAMPIMAGE input_buf, JDIMENSION in_row_index,
           JSAMPIMAGE output_buf,
           JDIMENSION out_row_group_index));

  boolean need_context_rows;  /* TRUE if need rows above & below */
};

/* Forward DCT (also controls coefficient quantization) */
struct jpeg_forward_dct {
  JMETHOD(void, start_pass, (j_compress_ptr cinfo));
  /* perhaps this should be an array??? */
  JMETHOD(void, forward_DCT, (j_compress_ptr cinfo,
            jpeg_component_info * compptr,
            JSAMPARRAY sample_data, JBLOCKROW coef_blocks,
            JDIMENSION start_row, JDIMENSION start_col,
            JDIMENSION num_blocks));
};

/* Entropy encoding */
struct jpeg_entropy_encoder {
  JMETHOD(void, start_pass, (j_compress_ptr cinfo, boolean gather_statistics));
  JMETHOD(boolean, encode_mcu, (j_compress_ptr cinfo, JBLOCKROW *MCU_data));
  JMETHOD(void, finish_pass, (j_compress_ptr cinfo));
};

/* Marker writing */
struct jpeg_marker_writer {
  JMETHOD(void, write_file_header, (j_compress_ptr cinfo));
  JMETHOD(void, write_frame_header, (j_compress_ptr cinfo));
  JMETHOD(void, write_scan_header, (j_compress_ptr cinfo));
  JMETHOD(void, write_file_trailer, (j_compress_ptr cinfo));
  JMETHOD(void, write_tables_only, (j_compress_ptr cinfo));
  /* These routines are exported to allow insertion of extra markers */
  /* Probably only COM and APPn markers should be written this way */
  JMETHOD(void, write_marker_header, (j_compress_ptr cinfo, int marker,
              unsigned int datalen));
  JMETHOD(void, write_marker_byte, (j_compress_ptr cinfo, int val));
};


/* Declarations for decompression modules */

/* Master control module */
struct jpeg_decomp_master {
  JMETHOD(void, prepare_for_output_pass, (j_decompress_ptr cinfo));
  JMETHOD(void, finish_output_pass, (j_decompress_ptr cinfo));

  /* State variables made visible to other modules */
  boolean is_dummy_pass;  /* True during 1st pass for 2-pass quant */
};

/* Input control module */
struct jpeg_input_controller {
  JMETHOD(int, consume_input, (j_decompress_ptr cinfo));
  JMETHOD(void, reset_input_controller, (j_decompress_ptr cinfo));
  JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
  JMETHOD(void, finish_input_pass, (j_decompress_ptr cinfo));

  /* State variables made visible to other modules */
  boolean has_multiple_scans; /* True if file has multiple scans */
  boolean eoi_reached;    /* True when EOI has been consumed */
};

/* Main buffer control (downsampled-data buffer) */
struct jpeg_d_main_controller {
  JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));
  JMETHOD(void, process_data, (j_decompress_ptr cinfo,
             JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
             JDIMENSION out_rows_avail));
};

/* Coefficient buffer control */
struct jpeg_d_coef_controller {
  JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
  JMETHOD(int, consume_data, (j_decompress_ptr cinfo));
  JMETHOD(void, start_output_pass, (j_decompress_ptr cinfo));
  JMETHOD(int, decompress_data, (j_decompress_ptr cinfo,
         JSAMPIMAGE output_buf));
  /* Pointer to array of coefficient virtual arrays, or NULL if none */
  jvirt_barray_ptr *coef_arrays;
};

/* Decompression postprocessing (color quantization buffer control) */
struct jpeg_d_post_controller {
  JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));
  JMETHOD(void, post_process_data, (j_decompress_ptr cinfo,
            JSAMPIMAGE input_buf,
            JDIMENSION *in_row_group_ctr,
            JDIMENSION in_row_groups_avail,
            JSAMPARRAY output_buf,
            JDIMENSION *out_row_ctr,
            JDIMENSION out_rows_avail));
};

/* Marker reading & parsing */
struct jpeg_marker_reader {
  JMETHOD(void, reset_marker_reader, (j_decompress_ptr cinfo));
  /* Read markers until SOS or EOI.
   * Returns same codes as are defined for jpeg_consume_input: