diff options
Diffstat (limited to 'plugins/FreeImage/Source/LibJPEG/jcapimin.c')
| -rw-r--r-- | plugins/FreeImage/Source/LibJPEG/jcapimin.c | 576 | 
1 files changed, 288 insertions, 288 deletions
diff --git a/plugins/FreeImage/Source/LibJPEG/jcapimin.c b/plugins/FreeImage/Source/LibJPEG/jcapimin.c index 3382d91557..639ce86f44 100644 --- a/plugins/FreeImage/Source/LibJPEG/jcapimin.c +++ b/plugins/FreeImage/Source/LibJPEG/jcapimin.c @@ -1,288 +1,288 @@ -/*
 - * jcapimin.c
 - *
 - * Copyright (C) 1994-1998, Thomas G. Lane.
 - * Modified 2003-2010 by Guido Vollbeding.
 - * This file is part of the Independent JPEG Group's software.
 - * For conditions of distribution and use, see the accompanying README file.
 - *
 - * This file contains application interface code for the compression half
 - * of the JPEG library.  These are the "minimum" API routines that may be
 - * needed in either the normal full-compression case or the transcoding-only
 - * case.
 - *
 - * Most of the routines intended to be called directly by an application
 - * are in this file or in jcapistd.c.  But also see jcparam.c for
 - * parameter-setup helper routines, jcomapi.c for routines shared by
 - * compression and decompression, and jctrans.c for the transcoding case.
 - */
 -
 -#define JPEG_INTERNALS
 -#include "jinclude.h"
 -#include "jpeglib.h"
 -
 -
 -/*
 - * Initialization of a JPEG compression object.
 - * The error manager must already be set up (in case memory manager fails).
 - */
 -
 -GLOBAL(void)
 -jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize)
 -{
 -  int i;
 -
 -  /* Guard against version mismatches between library and caller. */
 -  cinfo->mem = NULL;		/* so jpeg_destroy knows mem mgr not called */
 -  if (version != JPEG_LIB_VERSION)
 -    ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version);
 -  if (structsize != SIZEOF(struct jpeg_compress_struct))
 -    ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE, 
 -	     (int) SIZEOF(struct jpeg_compress_struct), (int) structsize);
 -
 -  /* For debugging purposes, we zero the whole master structure.
 -   * But the application has already set the err pointer, and may have set
 -   * client_data, so we have to save and restore those fields.
 -   * Note: if application hasn't set client_data, tools like Purify may
 -   * complain here.
 -   */
 -  {
 -    struct jpeg_error_mgr * err = cinfo->err;
 -    void * client_data = cinfo->client_data; /* ignore Purify complaint here */
 -    MEMZERO(cinfo, SIZEOF(struct jpeg_compress_struct));
 -    cinfo->err = err;
 -    cinfo->client_data = client_data;
 -  }
 -  cinfo->is_decompressor = FALSE;
 -
 -  /* Initialize a memory manager instance for this object */
 -  jinit_memory_mgr((j_common_ptr) cinfo);
 -
 -  /* Zero out pointers to permanent structures. */
 -  cinfo->progress = NULL;
 -  cinfo->dest = NULL;
 -
 -  cinfo->comp_info = NULL;
 -
 -  for (i = 0; i < NUM_QUANT_TBLS; i++) {
 -    cinfo->quant_tbl_ptrs[i] = NULL;
 -    cinfo->q_scale_factor[i] = 100;
 -  }
 -
 -  for (i = 0; i < NUM_HUFF_TBLS; i++) {
 -    cinfo->dc_huff_tbl_ptrs[i] = NULL;
 -    cinfo->ac_huff_tbl_ptrs[i] = NULL;
 -  }
 -
 -  /* Must do it here for emit_dqt in case jpeg_write_tables is used */
 -  cinfo->block_size = DCTSIZE;
 -  cinfo->natural_order = jpeg_natural_order;
 -  cinfo->lim_Se = DCTSIZE2-1;
 -
 -  cinfo->script_space = NULL;
 -
 -  cinfo->input_gamma = 1.0;	/* in case application forgets */
 -
 -  /* OK, I'm ready */
 -  cinfo->global_state = CSTATE_START;
 -}
 -
 -
 -/*
 - * Destruction of a JPEG compression object
 - */
 -
 -GLOBAL(void)
 -jpeg_destroy_compress (j_compress_ptr cinfo)
 -{
 -  jpeg_destroy((j_common_ptr) cinfo); /* use common routine */
 -}
 -
 -
 -/*
 - * Abort processing of a JPEG compression operation,
 - * but don't destroy the object itself.
 - */
 -
 -GLOBAL(void)
 -jpeg_abort_compress (j_compress_ptr cinfo)
 -{
 -  jpeg_abort((j_common_ptr) cinfo); /* use common routine */
 -}
 -
 -
 -/*
 - * Forcibly suppress or un-suppress all quantization and Huffman tables.
 - * Marks all currently defined tables as already written (if suppress)
 - * or not written (if !suppress).  This will control whether they get emitted
 - * by a subsequent jpeg_start_compress call.
 - *
 - * This routine is exported for use by applications that want to produce
 - * abbreviated JPEG datastreams.  It logically belongs in jcparam.c, but
 - * since it is called by jpeg_start_compress, we put it here --- otherwise
 - * jcparam.o would be linked whether the application used it or not.
 - */
 -
 -GLOBAL(void)
 -jpeg_suppress_tables (j_compress_ptr cinfo, boolean suppress)
 -{
 -  int i;
 -  JQUANT_TBL * qtbl;
 -  JHUFF_TBL * htbl;
 -
 -  for (i = 0; i < NUM_QUANT_TBLS; i++) {
 -    if ((qtbl = cinfo->quant_tbl_ptrs[i]) != NULL)
 -      qtbl->sent_table = suppress;
 -  }
 -
 -  for (i = 0; i < NUM_HUFF_TBLS; i++) {
 -    if ((htbl = cinfo->dc_huff_tbl_ptrs[i]) != NULL)
 -      htbl->sent_table = suppress;
 -    if ((htbl = cinfo->ac_huff_tbl_ptrs[i]) != NULL)
 -      htbl->sent_table = suppress;
 -  }
 -}
 -
 -
 -/*
 - * Finish JPEG compression.
 - *
 - * If a multipass operating mode was selected, this may do a great deal of
 - * work including most of the actual output.
 - */
 -
 -GLOBAL(void)
 -jpeg_finish_compress (j_compress_ptr cinfo)
 -{
 -  JDIMENSION iMCU_row;
 -
 -  if (cinfo->global_state == CSTATE_SCANNING ||
 -      cinfo->global_state == CSTATE_RAW_OK) {
 -    /* Terminate first pass */
 -    if (cinfo->next_scanline < cinfo->image_height)
 -      ERREXIT(cinfo, JERR_TOO_LITTLE_DATA);
 -    (*cinfo->master->finish_pass) (cinfo);
 -  } else if (cinfo->global_state != CSTATE_WRCOEFS)
 -    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
 -  /* Perform any remaining passes */
 -  while (! cinfo->master->is_last_pass) {
 -    (*cinfo->master->prepare_for_pass) (cinfo);
 -    for (iMCU_row = 0; iMCU_row < cinfo->total_iMCU_rows; iMCU_row++) {
 -      if (cinfo->progress != NULL) {
 -	cinfo->progress->pass_counter = (long) iMCU_row;
 -	cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows;
 -	(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
 -      }
 -      /* We bypass the main controller and invoke coef controller directly;
 -       * all work is being done from the coefficient buffer.
 -       */
 -      if (! (*cinfo->coef->compress_data) (cinfo, (JSAMPIMAGE) NULL))
 -	ERREXIT(cinfo, JERR_CANT_SUSPEND);
 -    }
 -    (*cinfo->master->finish_pass) (cinfo);
 -  }
 -  /* Write EOI, do final cleanup */
 -  (*cinfo->marker->write_file_trailer) (cinfo);
 -  (*cinfo->dest->term_destination) (cinfo);
 -  /* We can use jpeg_abort to release memory and reset global_state */
 -  jpeg_abort((j_common_ptr) cinfo);
 -}
 -
 -
 -/*
 - * Write a special marker.
 - * This is only recommended for writing COM or APPn markers.
 - * Must be called after jpeg_start_compress() and before
 - * first call to jpeg_write_scanlines() or jpeg_write_raw_data().
 - */
 -
 -GLOBAL(void)
 -jpeg_write_marker (j_compress_ptr cinfo, int marker,
 -		   const JOCTET *dataptr, unsigned int datalen)
 -{
 -  JMETHOD(void, write_marker_byte, (j_compress_ptr info, int val));
 -
 -  if (cinfo->next_scanline != 0 ||
 -      (cinfo->global_state != CSTATE_SCANNING &&
 -       cinfo->global_state != CSTATE_RAW_OK &&
 -       cinfo->global_state != CSTATE_WRCOEFS))
 -    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
 -
 -  (*cinfo->marker->write_marker_header) (cinfo, marker, datalen);
 -  write_marker_byte = cinfo->marker->write_marker_byte;	/* copy for speed */
 -  while (datalen--) {
 -    (*write_marker_byte) (cinfo, *dataptr);
 -    dataptr++;
 -  }
 -}
 -
 -/* Same, but piecemeal. */
 -
 -GLOBAL(void)
 -jpeg_write_m_header (j_compress_ptr cinfo, int marker, unsigned int datalen)
 -{
 -  if (cinfo->next_scanline != 0 ||
 -      (cinfo->global_state != CSTATE_SCANNING &&
 -       cinfo->global_state != CSTATE_RAW_OK &&
 -       cinfo->global_state != CSTATE_WRCOEFS))
 -    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
 -
 -  (*cinfo->marker->write_marker_header) (cinfo, marker, datalen);
 -}
 -
 -GLOBAL(void)
 -jpeg_write_m_byte (j_compress_ptr cinfo, int val)
 -{
 -  (*cinfo->marker->write_marker_byte) (cinfo, val);
 -}
 -
 -
 -/*
 - * Alternate compression function: just write an abbreviated table file.
 - * Before calling this, all parameters and a data destination must be set up.
 - *
 - * To produce a pair of files containing abbreviated tables and abbreviated
 - * image data, one would proceed as follows:
 - *
 - *		initialize JPEG object
 - *		set JPEG parameters
 - *		set destination to table file
 - *		jpeg_write_tables(cinfo);
 - *		set destination to image file
 - *		jpeg_start_compress(cinfo, FALSE);
 - *		write data...
 - *		jpeg_finish_compress(cinfo);
 - *
 - * jpeg_write_tables has the side effect of marking all tables written
 - * (same as jpeg_suppress_tables(..., TRUE)).  Thus a subsequent start_compress
 - * will not re-emit the tables unless it is passed write_all_tables=TRUE.
 - */
 -
 -GLOBAL(void)
 -jpeg_write_tables (j_compress_ptr cinfo)
 -{
 -  if (cinfo->global_state != CSTATE_START)
 -    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
 -
 -  /* (Re)initialize error mgr and destination modules */
 -  (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
 -  (*cinfo->dest->init_destination) (cinfo);
 -  /* Initialize the marker writer ... bit of a crock to do it here. */
 -  jinit_marker_writer(cinfo);
 -  /* Write them tables! */
 -  (*cinfo->marker->write_tables_only) (cinfo);
 -  /* And clean up. */
 -  (*cinfo->dest->term_destination) (cinfo);
 -  /*
 -   * In library releases up through v6a, we called jpeg_abort() here to free
 -   * any working memory allocated by the destination manager and marker
 -   * writer.  Some applications had a problem with that: they allocated space
 -   * of their own from the library memory manager, and didn't want it to go
 -   * away during write_tables.  So now we do nothing.  This will cause a
 -   * memory leak if an app calls write_tables repeatedly without doing a full
 -   * compression cycle or otherwise resetting the JPEG object.  However, that
 -   * seems less bad than unexpectedly freeing memory in the normal case.
 -   * An app that prefers the old behavior can call jpeg_abort for itself after
 -   * each call to jpeg_write_tables().
 -   */
 -}
 +/* + * jcapimin.c + * + * Copyright (C) 1994-1998, Thomas G. Lane. + * Modified 2003-2010 by Guido Vollbeding. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains application interface code for the compression half + * of the JPEG library.  These are the "minimum" API routines that may be + * needed in either the normal full-compression case or the transcoding-only + * case. + * + * Most of the routines intended to be called directly by an application + * are in this file or in jcapistd.c.  But also see jcparam.c for + * parameter-setup helper routines, jcomapi.c for routines shared by + * compression and decompression, and jctrans.c for the transcoding case. + */ + +#define JPEG_INTERNALS +#include "jinclude.h" +#include "jpeglib.h" + + +/* + * Initialization of a JPEG compression object. + * The error manager must already be set up (in case memory manager fails). + */ + +GLOBAL(void) +jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize) +{ +  int i; + +  /* Guard against version mismatches between library and caller. */ +  cinfo->mem = NULL;		/* so jpeg_destroy knows mem mgr not called */ +  if (version != JPEG_LIB_VERSION) +    ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version); +  if (structsize != SIZEOF(struct jpeg_compress_struct)) +    ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE,  +	     (int) SIZEOF(struct jpeg_compress_struct), (int) structsize); + +  /* For debugging purposes, we zero the whole master structure. +   * But the application has already set the err pointer, and may have set +   * client_data, so we have to save and restore those fields. +   * Note: if application hasn't set client_data, tools like Purify may +   * complain here. +   */ +  { +    struct jpeg_error_mgr * err = cinfo->err; +    void * client_data = cinfo->client_data; /* ignore Purify complaint here */ +    MEMZERO(cinfo, SIZEOF(struct jpeg_compress_struct)); +    cinfo->err = err; +    cinfo->client_data = client_data; +  } +  cinfo->is_decompressor = FALSE; + +  /* Initialize a memory manager instance for this object */ +  jinit_memory_mgr((j_common_ptr) cinfo); + +  /* Zero out pointers to permanent structures. */ +  cinfo->progress = NULL; +  cinfo->dest = NULL; + +  cinfo->comp_info = NULL; + +  for (i = 0; i < NUM_QUANT_TBLS; i++) { +    cinfo->quant_tbl_ptrs[i] = NULL; +    cinfo->q_scale_factor[i] = 100; +  } + +  for (i = 0; i < NUM_HUFF_TBLS; i++) { +    cinfo->dc_huff_tbl_ptrs[i] = NULL; +    cinfo->ac_huff_tbl_ptrs[i] = NULL; +  } + +  /* Must do it here for emit_dqt in case jpeg_write_tables is used */ +  cinfo->block_size = DCTSIZE; +  cinfo->natural_order = jpeg_natural_order; +  cinfo->lim_Se = DCTSIZE2-1; + +  cinfo->script_space = NULL; + +  cinfo->input_gamma = 1.0;	/* in case application forgets */ + +  /* OK, I'm ready */ +  cinfo->global_state = CSTATE_START; +} + + +/* + * Destruction of a JPEG compression object + */ + +GLOBAL(void) +jpeg_destroy_compress (j_compress_ptr cinfo) +{ +  jpeg_destroy((j_common_ptr) cinfo); /* use common routine */ +} + + +/* + * Abort processing of a JPEG compression operation, + * but don't destroy the object itself. + */ + +GLOBAL(void) +jpeg_abort_compress (j_compress_ptr cinfo) +{ +  jpeg_abort((j_common_ptr) cinfo); /* use common routine */ +} + + +/* + * Forcibly suppress or un-suppress all quantization and Huffman tables. + * Marks all currently defined tables as already written (if suppress) + * or not written (if !suppress).  This will control whether they get emitted + * by a subsequent jpeg_start_compress call. + * + * This routine is exported for use by applications that want to produce + * abbreviated JPEG datastreams.  It logically belongs in jcparam.c, but + * since it is called by jpeg_start_compress, we put it here --- otherwise + * jcparam.o would be linked whether the application used it or not. + */ + +GLOBAL(void) +jpeg_suppress_tables (j_compress_ptr cinfo, boolean suppress) +{ +  int i; +  JQUANT_TBL * qtbl; +  JHUFF_TBL * htbl; + +  for (i = 0; i < NUM_QUANT_TBLS; i++) { +    if ((qtbl = cinfo->quant_tbl_ptrs[i]) != NULL) +      qtbl->sent_table = suppress; +  } + +  for (i = 0; i < NUM_HUFF_TBLS; i++) { +    if ((htbl = cinfo->dc_huff_tbl_ptrs[i]) != NULL) +      htbl->sent_table = suppress; +    if ((htbl = cinfo->ac_huff_tbl_ptrs[i]) != NULL) +      htbl->sent_table = suppress; +  } +} + + +/* + * Finish JPEG compression. + * + * If a multipass operating mode was selected, this may do a great deal of + * work including most of the actual output. + */ + +GLOBAL(void) +jpeg_finish_compress (j_compress_ptr cinfo) +{ +  JDIMENSION iMCU_row; + +  if (cinfo->global_state == CSTATE_SCANNING || +      cinfo->global_state == CSTATE_RAW_OK) { +    /* Terminate first pass */ +    if (cinfo->next_scanline < cinfo->image_height) +      ERREXIT(cinfo, JERR_TOO_LITTLE_DATA); +    (*cinfo->master->finish_pass) (cinfo); +  } else if (cinfo->global_state != CSTATE_WRCOEFS) +    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); +  /* Perform any remaining passes */ +  while (! cinfo->master->is_last_pass) { +    (*cinfo->master->prepare_for_pass) (cinfo); +    for (iMCU_row = 0; iMCU_row < cinfo->total_iMCU_rows; iMCU_row++) { +      if (cinfo->progress != NULL) { +	cinfo->progress->pass_counter = (long) iMCU_row; +	cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows; +	(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); +      } +      /* We bypass the main controller and invoke coef controller directly; +       * all work is being done from the coefficient buffer. +       */ +      if (! (*cinfo->coef->compress_data) (cinfo, (JSAMPIMAGE) NULL)) +	ERREXIT(cinfo, JERR_CANT_SUSPEND); +    } +    (*cinfo->master->finish_pass) (cinfo); +  } +  /* Write EOI, do final cleanup */ +  (*cinfo->marker->write_file_trailer) (cinfo); +  (*cinfo->dest->term_destination) (cinfo); +  /* We can use jpeg_abort to release memory and reset global_state */ +  jpeg_abort((j_common_ptr) cinfo); +} + + +/* + * Write a special marker. + * This is only recommended for writing COM or APPn markers. + * Must be called after jpeg_start_compress() and before + * first call to jpeg_write_scanlines() or jpeg_write_raw_data(). + */ + +GLOBAL(void) +jpeg_write_marker (j_compress_ptr cinfo, int marker, +		   const JOCTET *dataptr, unsigned int datalen) +{ +  JMETHOD(void, write_marker_byte, (j_compress_ptr info, int val)); + +  if (cinfo->next_scanline != 0 || +      (cinfo->global_state != CSTATE_SCANNING && +       cinfo->global_state != CSTATE_RAW_OK && +       cinfo->global_state != CSTATE_WRCOEFS)) +    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); + +  (*cinfo->marker->write_marker_header) (cinfo, marker, datalen); +  write_marker_byte = cinfo->marker->write_marker_byte;	/* copy for speed */ +  while (datalen--) { +    (*write_marker_byte) (cinfo, *dataptr); +    dataptr++; +  } +} + +/* Same, but piecemeal. */ + +GLOBAL(void) +jpeg_write_m_header (j_compress_ptr cinfo, int marker, unsigned int datalen) +{ +  if (cinfo->next_scanline != 0 || +      (cinfo->global_state != CSTATE_SCANNING && +       cinfo->global_state != CSTATE_RAW_OK && +       cinfo->global_state != CSTATE_WRCOEFS)) +    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); + +  (*cinfo->marker->write_marker_header) (cinfo, marker, datalen); +} + +GLOBAL(void) +jpeg_write_m_byte (j_compress_ptr cinfo, int val) +{ +  (*cinfo->marker->write_marker_byte) (cinfo, val); +} + + +/* + * Alternate compression function: just write an abbreviated table file. + * Before calling this, all parameters and a data destination must be set up. + * + * To produce a pair of files containing abbreviated tables and abbreviated + * image data, one would proceed as follows: + * + *		initialize JPEG object + *		set JPEG parameters + *		set destination to table file + *		jpeg_write_tables(cinfo); + *		set destination to image file + *		jpeg_start_compress(cinfo, FALSE); + *		write data... + *		jpeg_finish_compress(cinfo); + * + * jpeg_write_tables has the side effect of marking all tables written + * (same as jpeg_suppress_tables(..., TRUE)).  Thus a subsequent start_compress + * will not re-emit the tables unless it is passed write_all_tables=TRUE. + */ + +GLOBAL(void) +jpeg_write_tables (j_compress_ptr cinfo) +{ +  if (cinfo->global_state != CSTATE_START) +    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); + +  /* (Re)initialize error mgr and destination modules */ +  (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); +  (*cinfo->dest->init_destination) (cinfo); +  /* Initialize the marker writer ... bit of a crock to do it here. */ +  jinit_marker_writer(cinfo); +  /* Write them tables! */ +  (*cinfo->marker->write_tables_only) (cinfo); +  /* And clean up. */ +  (*cinfo->dest->term_destination) (cinfo); +  /* +   * In library releases up through v6a, we called jpeg_abort() here to free +   * any working memory allocated by the destination manager and marker +   * writer.  Some applications had a problem with that: they allocated space +   * of their own from the library memory manager, and didn't want it to go +   * away during write_tables.  So now we do nothing.  This will cause a +   * memory leak if an app calls write_tables repeatedly without doing a full +   * compression cycle or otherwise resetting the JPEG object.  However, that +   * seems less bad than unexpectedly freeing memory in the normal case. +   * An app that prefers the old behavior can call jpeg_abort for itself after +   * each call to jpeg_write_tables(). +   */ +}  | 
