Imported Upstream version 1.8.3upstream/1.8.3

1 files changed, 0 insertions, 500 deletions

diff --git a/jpeg/rdtarga.c b/jpeg/rdtarga.c
deleted file mode 100755
index 4c2cd26..0000000
--- a/jpeg/rdtarga.c
+++ /dev/null
@@ -1,500 +0,0 @@
-/*
- * rdtarga.c
- *
- * Copyright (C) 1991-1996, 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 contains routines to read input images in Targa format.
- *
- * 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 Targa format).
- *
- * Based on code contributed by Lee Daniel Crocker.
- */
-
-#include "cdjpeg.h"		/* Common decls for cjpeg/djpeg applications */
-
-#ifdef TARGA_SUPPORTED
-
-
-/* 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)))
-
-
-/* Private version of data source object */
-
-typedef struct _tga_source_struct * tga_source_ptr;
-
-typedef struct _tga_source_struct {
-  struct cjpeg_source_struct pub; /* public fields */
-
-  j_compress_ptr cinfo;		/* back link saves passing separate parm */
-
-  JSAMPARRAY colormap;		/* Targa colormap (converted to my format) */
-
-  jvirt_sarray_ptr whole_image;	/* Needed if funny input row order */
-  JDIMENSION current_row;	/* Current logical row number to read */
-
-  /* Pointer to routine to extract next Targa pixel from input file */
-  JMETHOD(void, read_pixel, (tga_source_ptr sinfo));
-
-  /* Result of read_pixel is delivered here: */
-  U_CHAR tga_pixel[4];
-
-  int pixel_size;		/* Bytes per Targa pixel (1 to 4) */
-
-  /* State info for reading RLE-coded pixels; both counts must be init to 0 */
-  int block_count;		/* # of pixels remaining in RLE block */
-  int dup_pixel_count;		/* # of times to duplicate previous pixel */
-
-  /* This saves the correct pixel-row-expansion method for preload_image */
-  JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo,
-				       cjpeg_source_ptr sinfo));
-} tga_source_struct;
-
-
-/* For expanding 5-bit pixel values to 8-bit with best rounding */
-
-static const UINT8 c5to8bits[32] = {
-    0,   8,  16,  25,  33,  41,  49,  58,
-   66,  74,  82,  90,  99, 107, 115, 123,
-  132, 140, 148, 156, 165, 173, 181, 189,
-  197, 206, 214, 222, 230, 239, 247, 255
-};
-
-
-
-LOCAL(int)
-read_byte (tga_source_ptr sinfo)
-/* Read next byte from Targa file */
-{
-  register FILE *infile = sinfo->pub.input_file;
-  register int c;
-
-  if ((c = getc(infile)) == EOF)
-    ERREXIT(sinfo->cinfo, JERR_INPUT_EOF);
-  return c;
-}
-
-
-LOCAL(void)
-read_colormap (tga_source_ptr sinfo, int cmaplen, int mapentrysize)
-/* Read the colormap from a Targa file */
-{
-  int i;
-
-  /* Presently only handles 24-bit BGR format */
-  if (mapentrysize != 24)
-    ERREXIT(sinfo->cinfo, JERR_TGA_BADCMAP);
-
-  for (i = 0; i < cmaplen; i++) {
-    sinfo->colormap[2][i] = (JSAMPLE) read_byte(sinfo);
-    sinfo->colormap[1][i] = (JSAMPLE) read_byte(sinfo);
-    sinfo->colormap[0][i] = (JSAMPLE) read_byte(sinfo);
-  }
-}
-
-
-/*
- * read_pixel methods: get a single pixel from Targa file into tga_pixel[]
- */
-
-METHODDEF(void)
-read_non_rle_pixel (tga_source_ptr sinfo)
-/* Read one Targa pixel from the input file; no RLE expansion */
-{
-  register FILE *infile = sinfo->pub.input_file;
-  register int i;
-
-  for (i = 0; i < sinfo->pixel_size; i++) {
-    sinfo->tga_pixel[i] = (U_CHAR) getc(infile);
-  }
-}
-
-
-METHODDEF(void)
-read_rle_pixel (tga_source_ptr sinfo)
-/* Read one Targa pixel from the input file, expanding RLE data as needed */
-{
-  register FILE *infile = sinfo->pub.input_file;
-  register int i;
-
-  /* Duplicate previously read pixel? */
-  if (sinfo->dup_pixel_count > 0) {
-    sinfo->dup_pixel_count--;
-    return;
-  }
-
-  /* Time to read RLE block header? */
-  if (--sinfo->block_count < 0) { /* decrement pixels remaining in block */
-    i = read_byte(sinfo);
-    if (i & 0x80) {		/* Start of duplicate-pixel block? */
-      sinfo->dup_pixel_count = i & 0x7F; /* number of dups after this one */
-      sinfo->block_count = 0;	/* then read new block header */
-    } else {
-      sinfo->block_count = i & 0x7F; /* number of pixels after this one */
-    }
-  }
-
-  /* Read next pixel */
-  for (i = 0; i < sinfo->pixel_size; i++) {
-    sinfo->tga_pixel[i] = (U_CHAR) getc(infile);
-  }
-}
-
-
-/*
- * Read one row of pixels.
- *
- * We provide several different versions depending on input file format.
- */
-
-
-METHODDEF(JDIMENSION)
-get_8bit_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading 8-bit grayscale pixels */
-{
-  tga_source_ptr source = (tga_source_ptr) sinfo;
-  register JSAMPROW ptr;
-  register JDIMENSION col;
-  
-  ptr = source->pub.buffer[0];
-  for (col = cinfo->image_width; col > 0; col--) {
-    (*source->read_pixel) (source); /* Load next pixel into tga_pixel */
-    *ptr++ = (JSAMPLE) UCH(source->tga_pixel[0]);
-  }
-  return 1;
-}
-
-METHODDEF(JDIMENSION)
-get_8bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading 8-bit colormap indexes */
-{
-  tga_source_ptr source = (tga_source_ptr) sinfo;
-  register int t;
-  register JSAMPROW ptr;
-  register JDIMENSION col;
-  register JSAMPARRAY colormap = source->colormap;
-
-  ptr = source->pub.buffer[0];
-  for (col = cinfo->image_width; col > 0; col--) {
-    (*source->read_pixel) (source); /* Load next pixel into tga_pixel */
-    t = UCH(source->tga_pixel[0]);
-    *ptr++ = colormap[0][t];
-    *ptr++ = colormap[1][t];
-    *ptr++ = colormap[2][t];
-  }
-  return 1;
-}
-
-METHODDEF(JDIMENSION)
-get_16bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading 16-bit pixels */
-{
-  tga_source_ptr source = (tga_source_ptr) sinfo;
-  register int t;
-  register JSAMPROW ptr;
-  register JDIMENSION col;
-  
-  ptr = source->pub.buffer[0];
-  for (col = cinfo->image_width; col > 0; col--) {
-    (*source->read_pixel) (source); /* Load next pixel into tga_pixel */
-    t = UCH(source->tga_pixel[0]);
-    t += UCH(source->tga_pixel[1]) << 8;
-    /* We expand 5 bit data to 8 bit sample width.
-     * The format of the 16-bit (LSB first) input word is
-     *     xRRRRRGGGGGBBBBB
-     */
-    ptr[2] = (JSAMPLE) c5to8bits[t & 0x1F];
-    t >>= 5;
-    ptr[1] = (JSAMPLE) c5to8bits[t & 0x1F];
-    t >>= 5;
-    ptr[0] = (JSAMPLE) c5to8bits[t & 0x1F];
-    ptr += 3;
-  }
-  return 1;
-}
-
-METHODDEF(JDIMENSION)
-get_24bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-/* This version is for reading 24-bit pixels */
-{
-  tga_source_ptr source = (tga_source_ptr) sinfo;
-  register JSAMPROW ptr;
-  register JDIMENSION col;
-  
-  ptr = source->pub.buffer[0];
-  for (col = cinfo->image_width; col > 0; col--) {
-    (*source->read_pixel) (source); /* Load next pixel into tga_pixel */
-    *ptr++ = (JSAMPLE) UCH(source->tga_pixel[2]); /* change BGR to RGB order */
-    *ptr++ = (JSAMPLE) UCH(source->tga_pixel[1]);
-    *ptr++ = (JSAMPLE) UCH(source->tga_pixel[0]);
-  }
-  return 1;
-}
-
-/*
- * Targa also defines a 32-bit pixel format with order B,G,R,A.
- * We presently ignore the attribute byte, so the code for reading
- * these pixels is identical to the 24-bit routine above.
- * This works because the actual pixel length is only known to read_pixel.
- */
-
-#define get_32bit_row  get_24bit_row
-
-
-/*
- * This method is for re-reading the input data in standard top-down
- * row order.  The entire image has already been read into whole_image
- * with proper conversion of pixel format, but it's in a funny row order.
- */
-
-METHODDEF(JDIMENSION)
-get_memory_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-  tga_source_ptr source = (tga_source_ptr) sinfo;
-  JDIMENSION source_row;
-
-  /* Compute row of source that maps to current_row of normal order */
-  /* For now, assume image is bottom-up and not interlaced. */
-  /* NEEDS WORK to support interlaced images! */
-  source_row = cinfo->image_height - source->current_row - 1;
-
-  /* Fetch that row from virtual array */
-  source->pub.buffer = (*cinfo->mem->access_virt_sarray)
-    ((j_common_ptr) cinfo, source->whole_image,
-     source_row, (JDIMENSION) 1, FALSE);
-
-  source->current_row++;
-  return 1;
-}
-
-
-/*
- * This method loads the image into whole_image during the first call on
- * get_pixel_rows.  The get_pixel_rows pointer is then adjusted to call
- * get_memory_row on subsequent calls.
- */
-
-METHODDEF(JDIMENSION)
-preload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-  tga_source_ptr source = (tga_source_ptr) sinfo;
-  JDIMENSION row;
-  cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress;
-
-  /* Read the data into a virtual array in input-file row order. */
-  for (row = 0; row < cinfo->image_height; row++) {
-    if (progress != NULL) {
-      progress->pub.pass_counter = (long) row;
-      progress->pub.pass_limit = (long) cinfo->image_height;
-      (*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
-    }
-    source->pub.buffer = (*cinfo->mem->access_virt_sarray)
-      ((j_common_ptr) cinfo, source->whole_image, row, (JDIMENSION) 1, TRUE);
-    (*source->get_pixel_rows) (cinfo, sinfo);
-  }
-  if (progress != NULL)
-    progress->completed_extra_passes++;
-
-  /* Set up to read from the virtual array in unscrambled order */
-  source->pub.get_pixel_rows = get_memory_row;
-  source->current_row = 0;
-  /* And read the first row */
-  return get_memory_row(cinfo, sinfo);
-}
-
-
-/*
- * Read the file header; return image size and component count.
- */
-
-METHODDEF(void)
-start_input_tga (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-  tga_source_ptr source = (tga_source_ptr) sinfo;
-  U_CHAR targaheader[18];
-  int idlen, cmaptype, subtype, flags, interlace_type, components;
-  unsigned int width, height, maplen;
-  boolean is_bottom_up;
-
-#define GET_2B(offset)	((unsigned int) UCH(targaheader[offset]) + \
-			 (((unsigned int) UCH(targaheader[offset+1])) << 8))
-
-  if (! ReadOK(source->pub.input_file, targaheader, 18))
-    ERREXIT(cinfo, JERR_INPUT_EOF);
-
-  /* Pretend "15-bit" pixels are 16-bit --- we ignore attribute bit anyway */
-  if (targaheader[16] == 15)
-    targaheader[16] = 16;
-
-  idlen = UCH(targaheader[0]);
-  cmaptype = UCH(targaheader[1]);
-  subtype = UCH(targaheader[2]);
-  maplen = GET_2B(5);
-  width = GET_2B(12);
-  height = GET_2B(14);
-  source->pixel_size = UCH(targaheader[16]) >> 3;
-  flags = UCH(targaheader[17]);	/* Image Descriptor byte */
-
-  is_bottom_up = ((flags & 0x20) == 0);	/* bit 5 set => top-down */
-  interlace_type = flags >> 6;	/* bits 6/7 are interlace code */
-
-  if (cmaptype > 1 ||		/* cmaptype must be 0 or 1 */
-      source->pixel_size < 1 || source->pixel_size > 4 ||
-      (UCH(targaheader[16]) & 7) != 0 || /* bits/pixel must be multiple of 8 */
-      interlace_type != 0)	/* currently don't allow interlaced image */
-    ERREXIT(cinfo, JERR_TGA_BADPARMS);
-  
-  if (subtype > 8) {
-    /* It's an RLE-coded file */
-    source->read_pixel = read_rle_pixel;
-    source->block_count = source->dup_pixel_count = 0;
-    subtype -= 8;
-  } else {
-    /* Non-RLE file */
-    source->read_pixel = read_non_rle_pixel;
-  }
-
-  /* Now should have subtype 1, 2, or 3 */
-  components = 3;		/* until proven different */
-  cinfo->in_color_space = JCS_RGB;
-
-  switch (subtype) {
-  case 1:			/* Colormapped image */
-    if (source->pixel_size == 1 && cmaptype == 1)
-      source->get_pixel_rows = get_8bit_row;
-    else
-      ERREXIT(cinfo, JERR_TGA_BADPARMS);
-    TRACEMS2(cinfo, 1, JTRC_TGA_MAPPED, width, height);
-    break;
-  case 2:			/* RGB image */
-    switch (source->pixel_size) {
-    case 2:
-      source->get_pixel_rows = get_16bit_row;
-      break;
-    case 3:
-      source->get_pixel_rows = get_24bit_row;
-      break;
-    case 4:
-      source->get_pixel_rows = get_32bit_row;
-      break;
-    default:
-      ERREXIT(cinfo, JERR_TGA_BADPARMS);
-      break;
-    }
-    TRACEMS2(cinfo, 1, JTRC_TGA, width, height);
-    break;
-  case 3:			/* Grayscale image */
-    components = 1;
-    cinfo->in_color_space = JCS_GRAYSCALE;
-    if (source->pixel_size == 1)
-      source->get_pixel_rows = get_8bit_gray_row;
-    else
-      ERREXIT(cinfo, JERR_TGA_BADPARMS);
-    TRACEMS2(cinfo, 1, JTRC_TGA_GRAY, width, height);
-    break;
-  default:
-    ERREXIT(cinfo, JERR_TGA_BADPARMS);
-    break;
-  }
-
-  if (is_bottom_up) {
-    /* Create a virtual array to buffer the upside-down image. */
-    source->whole_image = (*cinfo->mem->request_virt_sarray)
-      ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
-       (JDIMENSION) width * components, (JDIMENSION) height, (JDIMENSION) 1);
-    if (cinfo->progress != NULL) {
-      cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress;
-      progress->total_extra_passes++; /* count file input as separate pass */
-    }
-    /* source->pub.buffer will point to the virtual array. */
-    source->pub.buffer_height = 1; /* in case anyone looks at it */
-    source->pub.get_pixel_rows = preload_image;
-  } else {
-    /* Don't need a virtual array, but do need a one-row input buffer. */
-    source->whole_image = NULL;
-    source->pub.buffer = (*cinfo->mem->alloc_sarray)
-      ((j_common_ptr) cinfo, JPOOL_IMAGE,
-       (JDIMENSION) width * components, (JDIMENSION) 1);
-    source->pub.buffer_height = 1;
-    source->pub.get_pixel_rows = source->get_pixel_rows;
-  }
-  
-  while (idlen--)		/* Throw away ID field */
-    (void) read_byte(source);
-
-  if (maplen > 0) {
-    if (maplen > 256 || GET_2B(3) != 0)
-      ERREXIT(cinfo, JERR_TGA_BADCMAP);
-    /* Allocate space to store the colormap */
-    source->colormap = (*cinfo->mem->alloc_sarray)
-      ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) maplen, (JDIMENSION) 3);
-    /* and read it from the file */
-    read_colormap(source, (int) maplen, UCH(targaheader[7]));
-  } else {
-    if (cmaptype)		/* but you promised a cmap! */
-      ERREXIT(cinfo, JERR_TGA_BADPARMS);
-    source->colormap = NULL;
-  }
-
-  cinfo->input_components = components;
-  cinfo->data_precision = 8;
-  cinfo->image_width = width;
-  cinfo->image_height = height;
-}
-
-
-/*
- * Finish up at the end of the file.
- */
-
-METHODDEF(void)
-finish_input_tga (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-  /* no work */
-}
-
-
-/*
- * The module selection routine for Targa format input.
- */
-
-GLOBAL(cjpeg_source_ptr)
-jinit_read_targa (j_compress_ptr cinfo)
-{
-  tga_source_ptr source;
-
-  /* Create module interface object */
-  source = (tga_source_ptr)
-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-				  SIZEOF(tga_source_struct));
-  source->cinfo = cinfo;	/* make back link for subroutines */
-  /* Fill in method ptrs, except get_pixel_rows which start_input sets */
-  source->pub.start_input = start_input_tga;
-  source->pub.finish_input = finish_input_tga;
-
-  return (cjpeg_source_ptr) source;
-}
-
-#endif /* TARGA_SUPPORTED */