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Diffstat (limited to 'Build/source/utils/jpeg2ps/readjpeg.c')
-rw-r--r--Build/source/utils/jpeg2ps/readjpeg.c323
1 files changed, 0 insertions, 323 deletions
diff --git a/Build/source/utils/jpeg2ps/readjpeg.c b/Build/source/utils/jpeg2ps/readjpeg.c
deleted file mode 100644
index afa49dcf6be..00000000000
--- a/Build/source/utils/jpeg2ps/readjpeg.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/* ------------------------- readjpeg.c ------------------------- */
-#include <stdio.h>
-#include <string.h>
-
-#if !defined(DOS) && !defined(WIN32)
-#include <unistd.h>
-#endif
-
-#include "psimage.h"
-
-/* The following enum is stolen from the IJG JPEG library
- * Comments added by tm
- * This table contains far too many names since jpeg2ps
- * is rather simple-minded about markers
- */
-
-extern BOOL quiet;
-
-typedef enum { /* JPEG marker codes */
- M_SOF0 = 0xc0, /* baseline DCT */
- M_SOF1 = 0xc1, /* extended sequential DCT */
- M_SOF2 = 0xc2, /* progressive DCT */
- M_SOF3 = 0xc3, /* lossless (sequential) */
-
- M_SOF5 = 0xc5, /* differential sequential DCT */
- M_SOF6 = 0xc6, /* differential progressive DCT */
- M_SOF7 = 0xc7, /* differential lossless */
-
- M_JPG = 0xc8, /* JPEG extensions */
- M_SOF9 = 0xc9, /* extended sequential DCT */
- M_SOF10 = 0xca, /* progressive DCT */
- M_SOF11 = 0xcb, /* lossless (sequential) */
-
- M_SOF13 = 0xcd, /* differential sequential DCT */
- M_SOF14 = 0xce, /* differential progressive DCT */
- M_SOF15 = 0xcf, /* differential lossless */
-
- M_DHT = 0xc4, /* define Huffman tables */
-
- M_DAC = 0xcc, /* define arithmetic conditioning table */
-
- M_RST0 = 0xd0, /* restart */
- M_RST1 = 0xd1, /* restart */
- M_RST2 = 0xd2, /* restart */
- M_RST3 = 0xd3, /* restart */
- M_RST4 = 0xd4, /* restart */
- M_RST5 = 0xd5, /* restart */
- M_RST6 = 0xd6, /* restart */
- M_RST7 = 0xd7, /* restart */
-
- M_SOI = 0xd8, /* start of image */
- M_EOI = 0xd9, /* end of image */
- M_SOS = 0xda, /* start of scan */
- M_DQT = 0xdb, /* define quantization tables */
- M_DNL = 0xdc, /* define number of lines */
- M_DRI = 0xdd, /* define restart interval */
- M_DHP = 0xde, /* define hierarchical progression */
- M_EXP = 0xdf, /* expand reference image(s) */
-
- M_APP0 = 0xe0, /* application marker, used for JFIF */
- M_APP1 = 0xe1, /* application marker */
- M_APP2 = 0xe2, /* application marker */
- M_APP3 = 0xe3, /* application marker */
- M_APP4 = 0xe4, /* application marker */
- M_APP5 = 0xe5, /* application marker */
- M_APP6 = 0xe6, /* application marker */
- M_APP7 = 0xe7, /* application marker */
- M_APP8 = 0xe8, /* application marker */
- M_APP9 = 0xe9, /* application marker */
- M_APP10 = 0xea, /* application marker */
- M_APP11 = 0xeb, /* application marker */
- M_APP12 = 0xec, /* application marker */
- M_APP13 = 0xed, /* application marker */
- M_APP14 = 0xee, /* application marker, used by Adobe */
- M_APP15 = 0xef, /* application marker */
-
- M_JPG0 = 0xf0, /* reserved for JPEG extensions */
- M_JPG13 = 0xfd, /* reserved for JPEG extensions */
- M_COM = 0xfe, /* comment */
-
- M_TEM = 0x01, /* temporary use */
-
- M_ERROR = 0x100 /* dummy marker, internal use only */
-} JPEG_MARKER;
-
-/*
- * The following routine used to be a macro in its first incarnation:
- * #define get_2bytes(fp) ((unsigned int) (getc(fp) << 8) + getc(fp))
- * However, this is bad programming since C doesn't guarantee
- * the evaluation order of the getc() calls! As suggested by
- * Murphy's law, there are indeed compilers which produce the wrong
- * order of the getc() calls, e.g. the Metrowerks C compilers for BeOS
- * and Macintosh.
- * Since there are only few calls we don't care about the performance
- * penalty and use a simplistic C function.
- */
-
-/* read two byte parameter, MSB first */
-static unsigned int
-get_2bytes(FILE *fp)
-{
- unsigned int val;
- val = getc(fp) << 8;
- val += getc(fp);
- return val;
-}
-
-static int
-next_marker P1(FILE *, fp)
-{ /* look for next JPEG Marker */
- int c, nbytes = 0;
-
- if (feof(fp))
- return M_ERROR; /* dummy marker */
-
- do {
- do { /* skip to FF */
- nbytes++;
- c = getc(fp);
- } while (c != 0xFF);
- do { /* skip repeated FFs */
- c = getc(fp);
- } while (c == 0xFF);
- } while (c == 0); /* repeat if FF/00 */
-
- return c;
-}
-
-/* analyze JPEG marker */
-BOOL AnalyzeJPEG P1(imagedata *, image) {
- int b, c, unit;
- unsigned long i, length = 0;
-#define APP_MAX 255
- unsigned char appstring[APP_MAX];
- BOOL SOF_done = FALSE;
-
- /* Tommy's special trick for Macintosh JPEGs: simply skip some */
- /* hundred bytes at the beginning of the file! */
- do {
- do { /* skip if not FF */
- c = getc(image->fp);
- } while (!feof(image->fp) && c != 0xFF);
-
- do { /* skip repeated FFs */
- c = getc(image->fp);
- } while (c == 0xFF);
-
- /* remember start position */
- if ((image->startpos = ftell(image->fp)) < 0L) {
- fprintf(stderr, "Error: internal error in ftell()!\n");
- return FALSE;
- }
- image->startpos -= 2; /* subtract marker length */
-
- if (c == M_SOI) {
- fseek(image->fp, image->startpos, SEEK_SET);
- break;
- }
- } while (!feof(image->fp));
-
- if (feof(image->fp)) {
- fprintf(stderr, "Error: SOI marker not found!\n");
- return FALSE;
- }
-
- if (image->startpos > 0L && !quiet) {
- fprintf(stderr, "Note: skipped %ld bytes ", image->startpos);
- fprintf(stderr, "Probably Macintosh JPEG file?\n");
- }
-
- /* process JPEG markers */
- while (!SOF_done && (c = next_marker(image->fp)) != M_EOI) {
- switch (c) {
- case M_ERROR:
- fprintf(stderr, "Error: unexpected end of JPEG file!\n");
- return FALSE;
-
- /* The following are not officially supported in PostScript level 2 */
- case M_SOF2:
- case M_SOF3:
- case M_SOF5:
- case M_SOF6:
- case M_SOF7:
- case M_SOF9:
- case M_SOF10:
- case M_SOF11:
- case M_SOF13:
- case M_SOF14:
- case M_SOF15:
- fprintf(stderr,
- "Warning: JPEG file uses compression method %X - proceeding anyway.\n",
- c);
- fprintf(stderr,
- "PostScript output does not work on all PS interpreters!\n");
- /* FALLTHROUGH */
-
- case M_SOF0:
- case M_SOF1:
- length = get_2bytes(image->fp); /* read segment length */
-
- image->bits_per_component = getc(image->fp);
- image->height = get_2bytes(image->fp);
- image->width = get_2bytes(image->fp);
- image->components = getc(image->fp);
-
- SOF_done = TRUE;
- break;
-
- case M_APP0: /* check for JFIF marker with resolution */
- length = get_2bytes(image->fp);
-
- for (i = 0; i < length-2; i++) { /* get contents of marker */
- b = getc(image->fp);
- if (i < APP_MAX) /* store marker in appstring */
- appstring[i] = b;
- }
-
- /* Check for JFIF application marker and read density values
- * per JFIF spec version 1.02.
- * We only check X resolution, assuming X and Y resolution are equal.
- * Use values only if resolution not preset by user or to be ignored.
- */
-
-#define ASPECT_RATIO 0 /* JFIF unit byte: aspect ratio only */
-#define DOTS_PER_INCH 1 /* JFIF unit byte: dots per inch */
-#define DOTS_PER_CM 2 /* JFIF unit byte: dots per cm */
-
- if (image->dpi == DPI_USE_FILE && length >= 14 &&
- !strncmp((const char *)appstring, "JFIF", 4)) {
- unit = appstring[7]; /* resolution unit */
- /* resolution value */
- image->dpi = (float) ((appstring[8]<<8) + appstring[9]);
-
- if (image->dpi == 0.0) {
- image->dpi = DPI_USE_FILE;
- break;
- }
-
- switch (unit) {
- /* tell the caller we didn't find a resolution value */
- case ASPECT_RATIO:
- image->dpi = DPI_USE_FILE;
- break;
-
- case DOTS_PER_INCH:
- break;
-
- case DOTS_PER_CM:
- image->dpi *= (float) 2.54;
- break;
-
- default: /* unknown ==> ignore */
- fprintf(stderr,
- "Warning: JPEG file contains unknown JFIF resolution unit - ignored!\n");
- image->dpi = DPI_IGNORE;
- break;
- }
- }
- break;
-
- case M_APP14: /* check for Adobe marker */
- length = get_2bytes(image->fp);
-
- for (i = 0; i < length-2; i++) { /* get contents of marker */
- b = getc(image->fp);
- if (i < APP_MAX) /* store marker in appstring */
- appstring[i] = b;
- }
-
- /* Check for Adobe application marker. It is known (per Adobe's TN5116)
- * to contain the string "Adobe" at the start of the APP14 marker.
- */
- if (length >= 12 && !strncmp((const char *) appstring, "Adobe", 5))
- image->adobe = TRUE; /* set Adobe flag */
-
- break;
-
- case M_SOI: /* ignore markers without parameters */
- case M_EOI:
- case M_TEM:
- case M_RST0:
- case M_RST1:
- case M_RST2:
- case M_RST3:
- case M_RST4:
- case M_RST5:
- case M_RST6:
- case M_RST7:
- break;
-
- default: /* skip variable length markers */
- length = get_2bytes(image->fp);
- for (length -= 2; length > 0; length--)
- (void) getc(image->fp);
- break;
- }
- }
-
- /* do some sanity checks with the parameters */
- if (image->height <= 0 || image->width <= 0 || image->components <= 0) {
- fprintf(stderr, "Error: DNL marker not supported in PostScript Level 2!\n");
- return FALSE;
- }
-
- /* some broken JPEG files have this but they print anyway... */
- if (length != (unsigned int) (image->components * 3 + 8))
- fprintf(stderr, "Warning: SOF marker has incorrect length - ignored!\n");
-
- if (image->bits_per_component != 8) {
- fprintf(stderr, "Error: %d bits per color component ",
- image->bits_per_component);
- fprintf(stderr, "not supported in PostScript level 2!\n");
- return FALSE;
- }
-
- if (image->components!=1 && image->components!=3 && image->components!=4) {
- fprintf(stderr, "Error: unknown color space (%d components)!\n",
- image->components);
- return FALSE;
- }
-
- return TRUE;
-}
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