Imported Upstream version 1.8.3upstream/1.8.3

1 files changed, 0 insertions, 459 deletions

diff --git a/jpeg/rdppm.c b/jpeg/rdppm.c
deleted file mode 100755
index a757022..0000000
--- a/jpeg/rdppm.c
+++ /dev/null
@@ -1,459 +0,0 @@
-/*
- * rdppm.c
- *
- * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2009 by Bill Allombert, 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 routines to read input images in PPM/PGM format.
- * The extended 2-byte-per-sample raw PPM/PGM formats are supported.
- * The PBMPLUS library is NOT required to compile this software
- * (but it is highly useful as a set of PPM image manipulation programs).
- *
- * These routines may need modification for non-Unix environments or
- * specialized applications.  As they stand, they assume input from
- * an ordinary stdio stream.  They further assume that reading begins
- * at the start of the file; start_input may need work if the
- * user interface has already read some data (e.g., to determine that
- * the file is indeed PPM format).
- */
-
-#include "cdjpeg.h"		/* Common decls for cjpeg/djpeg applications */
-
-#ifdef PPM_SUPPORTED
-
-
-/* Portions of this code are based on the PBMPLUS library, which is:
-**
-** Copyright (C) 1988 by Jef Poskanzer.
-**
-** Permission to use, copy, modify, and distribute this software and its
-** documentation for any purpose and without fee is hereby granted, provided
-** that the above copyright notice appear in all copies and that both that
-** copyright notice and this permission notice appear in supporting
-** documentation.  This software is provided "as is" without express or
-** implied warranty.
-*/
-
-
-/* Macros to deal with unsigned chars as efficiently as compiler allows */
-
-#ifdef HAVE_UNSIGNED_CHAR
-typedef unsigned char U_CHAR;
-#define UCH(x)	((int) (x))
-#else /* !HAVE_UNSIGNED_CHAR */
-#ifdef CHAR_IS_UNSIGNED
-typedef char U_CHAR;
-#define UCH(x)	((int) (x))
-#else
-typedef char U_CHAR;
-#define UCH(x)	((int) (x) & 0xFF)
-#endif
-#endif /* HAVE_UNSIGNED_CHAR */
-
-
-#define	ReadOK(file,buffer,len)	(JFREAD(file,buffer,len) == ((size_t) (len)))
-
-
-/*
- * On most systems, reading individual bytes with getc() is drastically less
- * efficient than buffering a row at a time with fread().  On PCs, we must
- * allocate the buffer in near data space, because we are assuming small-data
- * memory model, wherein fread() can't reach far memory.  If you need to
- * process very wide images on a PC, you might have to compile in large-memory
- * model, or else replace fread() with a getc() loop --- which will be much
- * slower.
- */
-
-
-/* Private version of data source object */
-
-typedef struct {
-  struct cjpeg_source_struct pub; /* public fields */
-
-  U_CHAR *iobuffer;		/* non-FAR pointer to I/O buffer */
-  JSAMPROW pixrow;		/* FAR pointer to same */
-  size_t buffer_width;		/* width of I/O buffer */
-  JSAMPLE *rescale;		/* => maxval-remapping array, or NULL */
-} ppm_source_struct;
-
-typedef ppm_source_struct * ppm_source_ptr;
-
-
-LOCAL(int)
-pbm_getc (FILE * infile)
-/* Read next char, skipping over any comments */
-/* A comment/newline sequence is returned as a newline */
-{
-  register int ch;
-
-  ch = getc(infile);
-  if (ch == '#') {
-    do {
-      ch = getc(infile);
-    } while (ch != '\n' && ch != EOF);
-  }
-  return ch;
-}
-
-
-LOCAL(unsigned int)
-read_pbm_integer (j_compress_ptr cinfo, FILE * infile)
-/* Read an unsigned decimal integer from the PPM file */
-/* Swallows one trailing character after the integer */
-/* Note that on a 16-bit-int machine, only values up to 64k can be read. */
-/* This should not be a problem in practice. */
-{
-  register int ch;
-  register unsigned int val;
-
-  /* Skip any leading whitespace */
-  do {
-    ch = pbm_getc(infile);
-    if (ch == EOF)
-      ERREXIT(cinfo, JERR_INPUT_EOF);
-  } while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r');
-
-  if (ch < '0' || ch > '9')
-    ERREXIT(cinfo, JERR_PPM_NONNUMERIC);
-
-  val = ch - '0';
-  while ((ch = pbm_getc(infile)) >= '0' && ch <= '9') {
-    val *= 10;
-    val += ch - '0';
-  }
-  return val;
-}
-
-
-/*
- * Read one row of pixels.
- *
- * We provide several different versions depending on input file format.
- * In all cases, input is scaled to the size of JSAMPLE.
- *
- * A really fast path is provided for reading byte/sample raw files with
- * maxval = MAXJSAMPLE, which is the normal case for 8-bit data.
- */
-
-
-METHODDEF(JDIMENSION)
-get_text_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading text-format PGM files with any maxval */
-{
-  ppm_source_ptr source = (ppm_source_ptr) sinfo;
-  FILE * infile = source->pub.input_file;
-  register JSAMPROW ptr;
-  register JSAMPLE *rescale = source->rescale;
-  JDIMENSION col;
-
-  ptr = source->pub.buffer[0];
-  for (col = cinfo->image_width; col > 0; col--) {
-    *ptr++ = rescale[read_pbm_integer(cinfo, infile)];
-  }
-  return 1;
-}
-
-
-METHODDEF(JDIMENSION)
-get_text_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading text-format PPM files with any maxval */
-{
-  ppm_source_ptr source = (ppm_source_ptr) sinfo;
-  FILE * infile = source->pub.input_file;
-  register JSAMPROW ptr;
-  register JSAMPLE *rescale = source->rescale;
-  JDIMENSION col;
-
-  ptr = source->pub.buffer[0];
-  for (col = cinfo->image_width; col > 0; col--) {
-    *ptr++ = rescale[read_pbm_integer(cinfo, infile)];
-    *ptr++ = rescale[read_pbm_integer(cinfo, infile)];
-    *ptr++ = rescale[read_pbm_integer(cinfo, infile)];
-  }
-  return 1;
-}
-
-
-METHODDEF(JDIMENSION)
-get_scaled_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading raw-byte-format PGM files with any maxval */
-{
-  ppm_source_ptr source = (ppm_source_ptr) sinfo;
-  register JSAMPROW ptr;
-  register U_CHAR * bufferptr;
-  register JSAMPLE *rescale = source->rescale;
-  JDIMENSION col;
-
-  if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width))
-    ERREXIT(cinfo, JERR_INPUT_EOF);
-  ptr = source->pub.buffer[0];
-  bufferptr = source->iobuffer;
-  for (col = cinfo->image_width; col > 0; col--) {
-    *ptr++ = rescale[UCH(*bufferptr++)];
-  }
-  return 1;
-}
-
-
-METHODDEF(JDIMENSION)
-get_scaled_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading raw-byte-format PPM files with any maxval */
-{
-  ppm_source_ptr source = (ppm_source_ptr) sinfo;
-  register JSAMPROW ptr;
-  register U_CHAR * bufferptr;
-  register JSAMPLE *rescale = source->rescale;
-  JDIMENSION col;
-
-  if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width))
-    ERREXIT(cinfo, JERR_INPUT_EOF);
-  ptr = source->pub.buffer[0];
-  bufferptr = source->iobuffer;
-  for (col = cinfo->image_width; col > 0; col--) {
-    *ptr++ = rescale[UCH(*bufferptr++)];
-    *ptr++ = rescale[UCH(*bufferptr++)];
-    *ptr++ = rescale[UCH(*bufferptr++)];
-  }
-  return 1;
-}
-
-
-METHODDEF(JDIMENSION)
-get_raw_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading raw-byte-format files with maxval = MAXJSAMPLE.
- * In this case we just read right into the JSAMPLE buffer!
- * Note that same code works for PPM and PGM files.
- */
-{
-  ppm_source_ptr source = (ppm_source_ptr) sinfo;
-
-  if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width))
-    ERREXIT(cinfo, JERR_INPUT_EOF);
-  return 1;
-}
-
-
-METHODDEF(JDIMENSION)
-get_word_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading raw-word-format PGM files with any maxval */
-{
-  ppm_source_ptr source = (ppm_source_ptr) sinfo;
-  register JSAMPROW ptr;
-  register U_CHAR * bufferptr;
-  register JSAMPLE *rescale = source->rescale;
-  JDIMENSION col;
-
-  if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width))
-    ERREXIT(cinfo, JERR_INPUT_EOF);
-  ptr = source->pub.buffer[0];
-  bufferptr = source->iobuffer;
-  for (col = cinfo->image_width; col > 0; col--) {
-    register int temp;
-    temp  = UCH(*bufferptr++) << 8;
-    temp |= UCH(*bufferptr++);
-    *ptr++ = rescale[temp];
-  }
-  return 1;
-}
-
-
-METHODDEF(JDIMENSION)
-get_word_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading raw-word-format PPM files with any maxval */
-{
-  ppm_source_ptr source = (ppm_source_ptr) sinfo;
-  register JSAMPROW ptr;
-  register U_CHAR * bufferptr;
-  register JSAMPLE *rescale = source->rescale;
-  JDIMENSION col;
-
-  if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width))
-    ERREXIT(cinfo, JERR_INPUT_EOF);
-  ptr = source->pub.buffer[0];
-  bufferptr = source->iobuffer;
-  for (col = cinfo->image_width; col > 0; col--) {
-    register int temp;
-    temp  = UCH(*bufferptr++) << 8;
-    temp |= UCH(*bufferptr++);
-    *ptr++ = rescale[temp];
-    temp  = UCH(*bufferptr++) << 8;
-    temp |= UCH(*bufferptr++);
-    *ptr++ = rescale[temp];
-    temp  = UCH(*bufferptr++) << 8;
-    temp |= UCH(*bufferptr++);
-    *ptr++ = rescale[temp];
-  }
-  return 1;
-}
-
-
-/*
- * Read the file header; return image size and component count.
- */
-
-METHODDEF(void)
-start_input_ppm (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-  ppm_source_ptr source = (ppm_source_ptr) sinfo;
-  int c;
-  unsigned int w, h, maxval;
-  boolean need_iobuffer, use_raw_buffer, need_rescale;
-
-  if (getc(source->pub.input_file) != 'P')
-    ERREXIT(cinfo, JERR_PPM_NOT);
-
-  c = getc(source->pub.input_file); /* subformat discriminator character */
-
-  /* detect unsupported variants (ie, PBM) before trying to read header */
-  switch (c) {
-  case '2':			/* it's a text-format PGM file */
-  case '3':			/* it's a text-format PPM file */
-  case '5':			/* it's a raw-format PGM file */
-  case '6':			/* it's a raw-format PPM file */
-    break;
-  default:
-    ERREXIT(cinfo, JERR_PPM_NOT);
-    break;
-  }
-
-  /* fetch the remaining header info */
-  w = read_pbm_integer(cinfo, source->pub.input_file);
-  h = read_pbm_integer(cinfo, source->pub.input_file);
-  maxval = read_pbm_integer(cinfo, source->pub.input_file);
-
-  if (w <= 0 || h <= 0 || maxval <= 0) /* error check */
-    ERREXIT(cinfo, JERR_PPM_NOT);
-
-  cinfo->data_precision = BITS_IN_JSAMPLE; /* we always rescale data to this */
-  cinfo->image_width = (JDIMENSION) w;
-  cinfo->image_height = (JDIMENSION) h;
-
-  /* initialize flags to most common settings */
-  need_iobuffer = TRUE;		/* do we need an I/O buffer? */
-  use_raw_buffer = FALSE;	/* do we map input buffer onto I/O buffer? */
-  need_rescale = TRUE;		/* do we need a rescale array? */
-
-  switch (c) {
-  case '2':			/* it's a text-format PGM file */
-    cinfo->input_components = 1;
-    cinfo->in_color_space = JCS_GRAYSCALE;
-    TRACEMS2(cinfo, 1, JTRC_PGM_TEXT, w, h);
-    source->pub.get_pixel_rows = get_text_gray_row;
-    need_iobuffer = FALSE;
-    break;
-
-  case '3':			/* it's a text-format PPM file */
-    cinfo->input_components = 3;
-    cinfo->in_color_space = JCS_RGB;
-    TRACEMS2(cinfo, 1, JTRC_PPM_TEXT, w, h);
-    source->pub.get_pixel_rows = get_text_rgb_row;
-    need_iobuffer = FALSE;
-    break;
-
-  case '5':			/* it's a raw-format PGM file */
-    cinfo->input_components = 1;
-    cinfo->in_color_space = JCS_GRAYSCALE;
-    TRACEMS2(cinfo, 1, JTRC_PGM, w, h);
-    if (maxval > 255) {
-      source->pub.get_pixel_rows = get_word_gray_row;
-    } else if (maxval == MAXJSAMPLE && SIZEOF(JSAMPLE) == SIZEOF(U_CHAR)) {
-      source->pub.get_pixel_rows = get_raw_row;
-      use_raw_buffer = TRUE;
-      need_rescale = FALSE;
-    } else {
-      source->pub.get_pixel_rows = get_scaled_gray_row;
-    }
-    break;
-
-  case '6':			/* it's a raw-format PPM file */
-    cinfo->input_components = 3;
-    cinfo->in_color_space = JCS_RGB;
-    TRACEMS2(cinfo, 1, JTRC_PPM, w, h);
-    if (maxval > 255) {
-      source->pub.get_pixel_rows = get_word_rgb_row;
-    } else if (maxval == MAXJSAMPLE && SIZEOF(JSAMPLE) == SIZEOF(U_CHAR)) {
-      source->pub.get_pixel_rows = get_raw_row;
-      use_raw_buffer = TRUE;
-      need_rescale = FALSE;
-    } else {
-      source->pub.get_pixel_rows = get_scaled_rgb_row;
-    }
-    break;
-  }
-
-  /* Allocate space for I/O buffer: 1 or 3 bytes or words/pixel. */
-  if (need_iobuffer) {
-    source->buffer_width = (size_t) w * cinfo->input_components *
-      ((maxval<=255) ? SIZEOF(U_CHAR) : (2*SIZEOF(U_CHAR)));
-    source->iobuffer = (U_CHAR *)
-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-				  source->buffer_width);
-  }
-
-  /* Create compressor input buffer. */
-  if (use_raw_buffer) {
-    /* For unscaled raw-input case, we can just map it onto the I/O buffer. */
-    /* Synthesize a JSAMPARRAY pointer structure */
-    /* Cast here implies near->far pointer conversion on PCs */
-    source->pixrow = (JSAMPROW) source->iobuffer;
-    source->pub.buffer = & source->pixrow;
-    source->pub.buffer_height = 1;
-  } else {
-    /* Need to translate anyway, so make a separate sample buffer. */
-    source->pub.buffer = (*cinfo->mem->alloc_sarray)
-      ((j_common_ptr) cinfo, JPOOL_IMAGE,
-       (JDIMENSION) w * cinfo->input_components, (JDIMENSION) 1);
-    source->pub.buffer_height = 1;
-  }
-
-  /* Compute the rescaling array if required. */
-  if (need_rescale) {
-    INT32 val, half_maxval;
-
-    /* On 16-bit-int machines we have to be careful of maxval = 65535 */
-    source->rescale = (JSAMPLE *)
-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-				  (size_t) (((long) maxval + 1L) * SIZEOF(JSAMPLE)));
-    half_maxval = maxval / 2;
-    for (val = 0; val <= (INT32) maxval; val++) {
-      /* The multiplication here must be done in 32 bits to avoid overflow */
-      source->rescale[val] = (JSAMPLE) ((val*MAXJSAMPLE + half_maxval)/maxval);
-    }
-  }
-}
-
-
-/*
- * Finish up at the end of the file.
- */
-
-METHODDEF(void)
-finish_input_ppm (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-  /* no work */
-}
-
-
-/*
- * The module selection routine for PPM format input.
- */
-
-GLOBAL(cjpeg_source_ptr)
-jinit_read_ppm (j_compress_ptr cinfo)
-{
-  ppm_source_ptr source;
-
-  /* Create module interface object */
-  source = (ppm_source_ptr)
-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-				  SIZEOF(ppm_source_struct));
-  /* Fill in method ptrs, except get_pixel_rows which start_input sets */
-  source->pub.start_input = start_input_ppm;
-  source->pub.finish_input = finish_input_ppm;
-
-  return (cjpeg_source_ptr) source;
-}
-
-#endif /* PPM_SUPPORTED */