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-rw-r--r--Build/source/texk/dvipdfm-x/xsrc/jpegimage.c979
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diff --git a/Build/source/texk/dvipdfm-x/xsrc/jpegimage.c b/Build/source/texk/dvipdfm-x/xsrc/jpegimage.c
deleted file mode 100644
index d1b31c214d0..00000000000
--- a/Build/source/texk/dvipdfm-x/xsrc/jpegimage.c
+++ /dev/null
@@ -1,979 +0,0 @@
-/*
-
- This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
-
- Copyright (C) 2002-2012 by Jin-Hwan Cho and Shunsaku Hirata,
- the dvipdfmx project team.
-
- Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-/*
- * JPEG SUPPORT
- *
- * Accroding to Libjpeg document:
- *
- * CAUTION: it appears that Adobe Photoshop writes inverted data in CMYK
- * JPEG files: 0 represents 100% ink coverage, rather than 0% ink as you'd
- * expect....
- *
- * To wrok with this problem, we must detect whether CMYK JPEG file is
- * created by Photoshop. But there are no reliable way to determine this.
- *
- * According to Adobe Technical Note #5516,
- * "Supporting the DCT Filters in PostScript Level 2", Section 18, p.27.
- *
- * DCTDecode ignores and skips any APPE marker segment does not begin with
- * the `Adobe' 5-character string.
- *
- * PDF Reference Manual 4th ed., p.61-62.
- *
- * The JPEG filter implementation in Adobe Acrobat products does not
- * support features of the JPEG standard that are irrelevant to images.
- * In addition, certain choices have been made regarding reserved marker
- * codes and other optional features of the standard. For details, see
- * Adobe Technical Note #5116, Supporting the DCT Filters in PostScript
- * Level 2.
- */
-
-#include "system.h"
-#include "error.h"
-#include "mem.h"
-
-#include "mfileio.h"
-#include "numbers.h"
-
-#include "dvipdfmx.h"
-
-#include "pdfobj.h"
-
-#include "jpegimage.h"
-#include "pdfcolor.h"
-
-#include "pdfximage.h"
-
-#define JPEG_DEBUG_STR "JPEG"
-#define JPEG_DEBUG 3
-
-#ifdef HAVE_LIBJPEG
-#include <jpeglib.h>
-#endif /* HAVE_LIBJPEG */
-
-/* JPEG Markers */
-typedef enum {
- JM_SOF0 = 0xc0,
- JM_SOF1 = 0xc1,
- JM_SOF2 = 0xc2,
- JM_SOF3 = 0xc3,
- JM_SOF5 = 0xc5,
- JM_DHT = 0xc4,
- JM_SOF6 = 0xc6,
- JM_SOF7 = 0xc7,
- JM_SOF9 = 0xc9,
- JM_SOF10 = 0xca,
- JM_SOF11 = 0xcb,
- JM_DAC = 0xcc,
- JM_SOF13 = 0xcd,
- JM_SOF14 = 0xce,
- JM_SOF15 = 0xcf,
-
- JM_RST0 = 0xd0,
- JM_RST1 = 0xd1,
- JM_RST2 = 0xd2,
- JM_RST3 = 0xd3,
- JM_RST4 = 0xd4,
- JM_RST5 = 0xd5,
- JM_RST6 = 0xd6,
- JM_RST7 = 0xd7,
-
- JM_SOI = 0xd8,
- JM_EOI = 0xd9,
- JM_SOS = 0xda,
- JM_DQT = 0xdb,
- JM_DNL = 0xdc,
- JM_DRI = 0xdd,
- JM_DHP = 0xde,
- JM_EXP = 0xdf,
-
- JM_APP0 = 0xe0,
- JM_APP1 = 0xe1,
- JM_APP2 = 0xe2,
- JM_APP14 = 0xee,
- JM_APP15 = 0xef,
-
- JM_COM = 0xfe
-} JPEG_marker;
-
-typedef enum {
- JS_APPn_JFIF,
- JS_APPn_ADOBE,
- JS_APPn_ICC
-} JPEG_APPn_sig;
-
-struct JPEG_APPn_JFIF /* APP0 */
-{
- unsigned short version;
- unsigned char units; /* 0: only aspect ratio
- * 1: dots per inch
- * 2: dots per cm
- */
- unsigned short Xdensity;
- unsigned short Ydensity;
- unsigned char Xthumbnail;
- unsigned char Ythumbnail;
- unsigned char *thumbnail; /* Thumbnail data. */
-};
-
-struct JPEG_APPn_ICC /* APP2 */
-{
- unsigned char seq_id;
- unsigned char num_chunks;
- unsigned char *chunk;
-
- /* Length of ICC profile data in this chunk. */
- unsigned short length;
-};
-
-struct JPEG_APPn_Adobe /* APP14 */
-{
- unsigned short version;
- unsigned short flag0;
- unsigned short flag1;
- unsigned char transform; /* color transform code */
-};
-
-struct JPEG_ext
-{
- JPEG_marker marker;
- JPEG_APPn_sig app_sig;
- void *app_data;
-};
-
-#define MAX_COUNT 1024
-struct JPEG_info
-{
- unsigned short height;
- unsigned short width;
-
- unsigned char bits_per_component;
- unsigned char num_components;
-
- double xdpi;
- double ydpi;
-
- /* Application specific extensions */
- int flags;
- int num_appn, max_appn;
- struct JPEG_ext *appn;
-
- /* Skip chunks not necessary. */
- char skipbits[MAX_COUNT / 8 + 1];
-};
-
-#define HAVE_APPn_JFIF (1 << 0)
-#define HAVE_APPn_ADOBE (1 << 1)
-#define HAVE_APPn_ICC (1 << 2)
-#define HAVE_APPn_Exif (1 << 3)
-
-static int JPEG_scan_file (struct JPEG_info *j_info, FILE *fp);
-static int JPEG_copy_stream (struct JPEG_info *j_info,
- pdf_obj *stream, FILE *fp, int flags); /* flags unused yet */
-
-static void JPEG_info_init (struct JPEG_info *j_info);
-static void JPEG_info_clear (struct JPEG_info *j_info);
-static pdf_obj *JPEG_get_iccp (struct JPEG_info *j_info);
-static void jpeg_get_density (struct JPEG_info *j_info,
- double *xdensity, double *ydensity);
-
-int
-check_for_jpeg (FILE *fp)
-{
- unsigned char jpeg_sig[2];
-
- rewind(fp);
- if (fread(jpeg_sig, sizeof(unsigned char), 2, fp) != 2)
- return 0;
- else if (jpeg_sig[0] != 0xff || jpeg_sig[1] != JM_SOI)
- return 0;
-
- return 1;
-}
-
-int
-jpeg_include_image (pdf_ximage *ximage, FILE *fp)
-{
- pdf_obj *stream;
- pdf_obj *stream_dict;
- pdf_obj *colorspace;
- int colortype;
- ximage_info info;
- struct JPEG_info j_info;
-
- if (!check_for_jpeg(fp)) {
- WARN("%s: Not a JPEG file?", JPEG_DEBUG_STR);
- rewind(fp);
- return -1;
- }
- /* File position is 2 here... */
-
- pdf_ximage_init_image_info(&info);
-
- JPEG_info_init(&j_info);
-
- if (JPEG_scan_file(&j_info, fp) < 0) {
- WARN("%s: Not a JPEG file?", JPEG_DEBUG_STR);
- JPEG_info_clear(&j_info);
- return -1;
- }
-
- switch (j_info.num_components) {
- case 1:
- colortype = PDF_COLORSPACE_TYPE_GRAY;
- break;
- case 3:
- colortype = PDF_COLORSPACE_TYPE_RGB;
- break;
- case 4:
- colortype = PDF_COLORSPACE_TYPE_CMYK;
- break;
- default:
- WARN("%s: Unknown color space (num components: %d)",
- JPEG_DEBUG_STR, info.num_components);
- JPEG_info_clear(&j_info);
- return -1;
- }
-
- /* JPEG image use DCTDecode. */
- stream = pdf_new_stream (0);
- stream_dict = pdf_stream_dict(stream);
- pdf_add_dict(stream_dict,
- pdf_new_name("Filter"), pdf_new_name("DCTDecode"));
-
- colorspace = NULL;
- if (j_info.flags & HAVE_APPn_ICC) {
- pdf_obj *icc_stream, *intent;
-
- icc_stream = JPEG_get_iccp(&j_info);
-
- if (!icc_stream)
- colorspace = NULL;
- else {
- int cspc_id;
-
- if (iccp_check_colorspace(colortype,
- pdf_stream_dataptr(icc_stream),
- pdf_stream_length (icc_stream)) < 0)
- colorspace = NULL;
- else {
- cspc_id = iccp_load_profile(NULL, /* noname */
- pdf_stream_dataptr(icc_stream),
- pdf_stream_length (icc_stream));
- if (cspc_id < 0)
- colorspace = NULL;
- else {
- colorspace = pdf_get_colorspace_reference(cspc_id);
- intent = iccp_get_rendering_intent(pdf_stream_dataptr(icc_stream),
- pdf_stream_length (icc_stream));
- if (intent)
- pdf_add_dict(stream_dict, pdf_new_name("Intent"), intent);
- }
- }
- pdf_release_obj(icc_stream);
- }
- }
-
- /* No ICC or invalid ICC profile. */
- if (!colorspace) {
- switch (colortype) {
- case PDF_COLORSPACE_TYPE_GRAY:
- colorspace = pdf_new_name("DeviceGray");
- break;
- case PDF_COLORSPACE_TYPE_RGB:
- colorspace = pdf_new_name("DeviceRGB");
- break;
- case PDF_COLORSPACE_TYPE_CMYK:
- colorspace = pdf_new_name("DeviceCMYK");
- break;
- }
- }
- pdf_add_dict(stream_dict, pdf_new_name("ColorSpace"), colorspace);
-
-#define IS_ADOBE_CMYK(j) (((j).flags & HAVE_APPn_ADOBE) && (j).num_components == 4)
-
- if (IS_ADOBE_CMYK(j_info)) {
- pdf_obj *decode;
- int i;
-
- WARN("Adobe CMYK JPEG: Inverted color assumed.");
- decode = pdf_new_array();
- for (i = 0; i < j_info.num_components; i++) {
- pdf_add_array(decode, pdf_new_number(1.0));
- pdf_add_array(decode, pdf_new_number(0.0));
- }
- pdf_add_dict(stream_dict, pdf_new_name("Decode"), decode);
- }
-
- /* Copy file */
- JPEG_copy_stream(&j_info, stream, fp, 0);
-
- info.width = j_info.width;
- info.height = j_info.height;
- info.bits_per_component = j_info.bits_per_component;
- info.num_components = j_info.num_components;
-
- if (j_info.flags & HAVE_APPn_Exif) {
- /* resolution data from EXIF is handled here, takes precedence over JFIF */
- info.xdensity = 72.0 / j_info.xdpi;
- info.ydensity = 72.0 / j_info.ydpi;
- }
- else if (j_info.flags & HAVE_APPn_JFIF) {
- int i;
- for (i = 0; i < j_info.num_appn; i++) {
- if (j_info.appn[i].marker == JM_APP0 && j_info.appn[i].app_sig == JS_APPn_JFIF)
- break;
- }
- if (i < j_info.num_appn) {
- struct JPEG_APPn_JFIF *app_data = (struct JPEG_APPn_JFIF *)j_info.appn[i].app_data;
- switch (app_data->units) {
- case 1: /* pixels per inch */
- info.xdensity = 72.0 / app_data->Xdensity;
- info.ydensity = 72.0 / app_data->Ydensity;
- break;
- case 2: /* pixels per centimeter */
- info.xdensity = 72.0 / 2.54 / app_data->Xdensity;
- info.ydensity = 72.0 / 2.54 / app_data->Ydensity;
- break;
- default:
- break;
- }
- }
- }
-
- pdf_ximage_set_image(ximage, &info, stream);
- JPEG_info_clear(&j_info);
-
- return 0;
-}
-
-static void
-jpeg_get_density (struct JPEG_info *j_info,
- double *xdensity, double *ydensity)
-{
- if (compat_mode) {
- *xdensity = *ydensity = 72.0 / 100.0;
- return;
- }
-
- *xdensity = *ydensity = 1.0;
-
- if (j_info->flags & HAVE_APPn_JFIF) {
- struct JPEG_APPn_JFIF *app_data;
- int i;
- for (i = 0; i < j_info->num_appn; i++) {
- if (j_info->appn[i].marker == JM_APP0 ||
- j_info->appn[i].app_sig == JS_APPn_JFIF)
- break;
- }
- if (i < j_info->num_appn) {
- app_data = (struct JPEG_APPn_JFIF *)j_info->appn[i].app_data;
- switch (app_data->units) {
- case 1: /* pixels per inch */
- *xdensity = 72.0 / app_data->Xdensity;
- *ydensity = 72.0 / app_data->Ydensity;
- break;
- case 2: /* pixels per centimeter */
- *xdensity = 72.0 / 2.54 / app_data->Xdensity;
- *ydensity = 72.0 / 2.54 / app_data->Ydensity;
- break;
- default:
- break;
- }
- }
- }
-}
-
-static void
-JPEG_info_init (struct JPEG_info *j_info)
-{
- j_info->width = 0;
- j_info->height = 0;
- j_info->bits_per_component = 0;
- j_info->num_components = 0;
-
- j_info->xdpi = 0;
- j_info->ydpi = 0;
-
- j_info->flags = 0;
- j_info->num_appn = 0;
- j_info->max_appn = 0;
- j_info->appn = NULL;
-
- memset(j_info->skipbits, 0, MAX_COUNT / 8 + 1);
-}
-
-static void
-JPEG_release_APPn_data (JPEG_marker marker, JPEG_APPn_sig app_sig, void *app_data)
-{
- if (marker == JM_APP0 &&
- app_sig == JS_APPn_JFIF) {
- struct JPEG_APPn_JFIF *data;
-
- data = (struct JPEG_APPn_JFIF *) app_data;
- if (data->thumbnail)
- RELEASE(data->thumbnail);
- data->thumbnail = NULL;
-
- RELEASE(data);
- } else if (marker == JM_APP2 &&
- app_sig == JS_APPn_ICC) {
- struct JPEG_APPn_ICC *data;
-
- data = (struct JPEG_APPn_ICC *) app_data;
- if (data->chunk)
- RELEASE(data->chunk);
- data->chunk = NULL;
-
- RELEASE(data);
- } else if (marker == JM_APP14 &&
- app_sig == JS_APPn_ADOBE) {
- struct JPEG_APPn_Adobe *data;
-
- data = (struct JPEG_APPn_Adobe *) app_data;
-
- RELEASE(data);
- }
-}
-
-static void
-JPEG_info_clear (struct JPEG_info *j_info)
-{
- if (j_info->num_appn > 0 &&
- j_info->appn != NULL) {
- int i;
-
- for (i = 0; i < j_info->num_appn; i++)
- JPEG_release_APPn_data(j_info->appn[i].marker,
- j_info->appn[i].app_sig, j_info->appn[i].app_data);
- RELEASE(j_info->appn);
- }
- j_info->appn = NULL;
- j_info->num_appn = 0;
- j_info->max_appn = 0;
- j_info->flags = 0;
-}
-
-static pdf_obj *
-JPEG_get_iccp (struct JPEG_info *j_info)
-{
- pdf_obj *icc_stream;
- struct JPEG_APPn_ICC *icc;
- int i, prev_id = 0, num_icc_seg = -1;
-
- icc_stream = pdf_new_stream(STREAM_COMPRESS);
- for (i = 0; i < j_info->num_appn; i++) {
- if (j_info->appn[i].marker != JM_APP2 ||
- j_info->appn[i].app_sig != JS_APPn_ICC)
- continue;
- icc = (struct JPEG_APPn_ICC *) j_info->appn[i].app_data;
- if (num_icc_seg < 0 && prev_id == 0) {
- num_icc_seg = icc->num_chunks;
- /* ICC chunks are sorted? */
- } else if (icc->seq_id != prev_id + 1 ||
- num_icc_seg != icc->num_chunks ||
- icc->seq_id > icc->num_chunks) {
- WARN("Invalid JPEG ICC chunk: %d (p:%d, n:%d)",
- icc->seq_id, prev_id, icc->num_chunks);
- pdf_release_obj(icc_stream);
- icc_stream = NULL;
- break;
- }
- pdf_add_stream(icc_stream, icc->chunk, icc->length);
- prev_id = icc->seq_id;
- num_icc_seg = icc->num_chunks;
- }
-
- return icc_stream;
-}
-
-static JPEG_marker
-JPEG_get_marker (FILE *fp)
-{
- int c;
-
- c = fgetc(fp);
- if (c != 255)
- return -1;
-
- for (;;) {
- c = fgetc(fp);
- if (c < 0)
- return -1;
- else if (c > 0 && c < 255) {
- return c;
- }
- }
-
- return -1;
-}
-
-static int
-add_APPn_marker (struct JPEG_info *j_info,
- JPEG_marker marker, int app_sig, void *app_data)
-{
- int n;
-
- if (j_info->num_appn >= j_info->max_appn) {
- j_info->max_appn += 16;
- j_info->appn = RENEW(j_info->appn, j_info->max_appn, struct JPEG_ext);
- }
- n = j_info->num_appn;
-
- j_info->appn[n].marker = marker;
- j_info->appn[n].app_sig = app_sig;
- j_info->appn[n].app_data = app_data;
-
- j_info->num_appn += 1;
-
- return n;
-}
-
-static unsigned short
-read_APP14_Adobe (struct JPEG_info *j_info, FILE *fp, unsigned short length)
-{
- struct JPEG_APPn_Adobe *app_data;
-
- app_data = NEW(1, struct JPEG_APPn_Adobe);
- app_data->version = get_unsigned_pair(fp);
- app_data->flag0 = get_unsigned_pair(fp);
- app_data->flag1 = get_unsigned_pair(fp);
- app_data->transform = get_unsigned_byte(fp);
-
- add_APPn_marker(j_info, JM_APP14, JS_APPn_ADOBE, app_data);
-
- return 7;
-}
-
-#ifdef XETEX
-static unsigned long
-read_exif_bytes(unsigned char **p, int n, int b)
-{
- unsigned long rval = 0;
- unsigned char *pp = *p;
- if (b) {
- switch (n) {
- case 4:
- rval += *pp++; rval <<= 8;
- rval += *pp++; rval <<= 8;
- case 2:
- rval += *pp++; rval <<= 8;
- rval += *pp;
- break;
- }
- }
- else {
- pp += n;
- switch (n) {
- case 4:
- rval += *--pp; rval <<= 8;
- rval += *--pp; rval <<= 8;
- case 2:
- rval += *--pp; rval <<= 8;
- rval += *--pp;
- break;
- }
- }
- *p += n;
- return rval;
-}
-
-static unsigned short
-read_APP1_Exif (struct JPEG_info *j_info, FILE *fp, unsigned short length)
-{
- /* this doesn't save the data, just reads the tags we need */
- /* based on info from http://www.exif.org/Exif2-2.PDF */
- unsigned char *buffer = NEW(length, unsigned char);
- unsigned char *p, *rp;
- unsigned char *tiff_header;
- char bigendian;
- int i;
- int num_fields, tag, type;
- int value = 0, num = 0, den = 0; /* silence uninitialized warnings */
- double xres = 72.0;
- double yres = 72.0;
- double res_unit = 1.0;
- fread(buffer, length, 1, fp);
- p = buffer;
- while ((p < buffer + length) && (*p == 0))
- ++p;
- tiff_header = p;
- if ((*p == 'M') && (*(p+1) == 'M'))
- bigendian = 1;
- else if ((*p == 'I') && (*(p+1) == 'I'))
- bigendian = 0;
- else
- goto err;
- p += 2;
- i = read_exif_bytes(&p, 2, bigendian);
- if (i != 42)
- goto err;
- i = read_exif_bytes(&p, 4, bigendian);
- p = tiff_header + i;
- num_fields = read_exif_bytes(&p, 2, bigendian);
- while (num_fields-- > 0) {
- tag = read_exif_bytes(&p, 2, bigendian);
- type = read_exif_bytes(&p, 2, bigendian);
- read_exif_bytes(&p, 4, bigendian);
- switch (type) {
- case 1: /* byte */
- value = *p++;
- p += 3;
- break;
- case 3: /* short */
- value = read_exif_bytes(&p, 2, bigendian);
- p += 2;
- break;
- case 4: /* long */
- case 9: /* slong */
- value = read_exif_bytes(&p, 4, bigendian);
- break;
- case 5: /* rational */
- case 10: /* srational */
- value = read_exif_bytes(&p, 4, bigendian);
- rp = tiff_header + value;
- num = read_exif_bytes(&rp, 4, bigendian);
- den = read_exif_bytes(&rp, 4, bigendian);
- break;
- case 7: /* undefined */
- value = *p++;
- p += 3;
- break;
- case 2: /* ascii */
- default:
- p += 4;
- break;
- }
- switch (tag) {
- case 282: /* x res */
- if (den != 0)
- xres = num / den;
- break;
- case 283: /* y res */
- if (den != 0)
- yres = num / den;
- break;
- case 296: /* res unit */
- switch (value) {
- case 2:
- res_unit = 1.0;
- break;
- case 3:
- res_unit = 2.54;
- break;
- }
- }
- }
-
- j_info->xdpi = xres * res_unit;
- j_info->ydpi = yres * res_unit;
-
-err:
- RELEASE(buffer);
- return length;
-}
-#endif
-
-static unsigned short
-read_APP0_JFIF (struct JPEG_info *j_info, FILE *fp, unsigned short length)
-{
- struct JPEG_APPn_JFIF *app_data;
- unsigned short thumb_data_len;
-
- app_data = NEW(1, struct JPEG_APPn_JFIF);
- app_data->version = get_unsigned_pair(fp);
- app_data->units = get_unsigned_byte(fp);
- app_data->Xdensity = get_unsigned_pair(fp);
- app_data->Ydensity = get_unsigned_pair(fp);
- app_data->Xthumbnail = get_unsigned_byte(fp);
- app_data->Ythumbnail = get_unsigned_byte(fp);
- thumb_data_len = 3 * app_data->Xthumbnail * app_data->Ythumbnail;
- if (thumb_data_len > 0) {
- app_data->thumbnail = NEW(thumb_data_len, unsigned char);
- fread(app_data->thumbnail, 1, thumb_data_len, fp);
- } else {
- app_data->thumbnail = NULL;
- }
-
- add_APPn_marker(j_info, JM_APP0, JS_APPn_JFIF, app_data);
-
- switch (app_data->units) {
- case 1:
- j_info->xdpi = app_data->Xdensity;
- j_info->ydpi = app_data->Ydensity;
- break;
- case 2: /* density is in pixels per cm */
- j_info->xdpi = app_data->Xdensity * 2.54;
- j_info->ydpi = app_data->Ydensity * 2.54;
- break;
- default: /* FIXME: not sure what to do with this.... */
- j_info->xdpi = 72.0;
- j_info->ydpi = 72.0 * app_data->Ydensity / app_data->Xdensity;
- break;
- }
-
- return (9 + thumb_data_len);
-}
-
-static unsigned short
-read_APP0_JFXX (struct JPEG_info *j_info, FILE *fp, unsigned short length)
-{
- get_unsigned_byte(fp);
- /* Extension Code:
- *
- * 0x10: Thumbnail coded using JPEG
- * 0x11: Thumbnail stored using 1 byte/pixel
- * 0x13: Thumbnail stored using 3 bytes/pixel
- */
- seek_relative(fp, length-1); /* Thunbnail image */
-
- /* Ignore */
-
- return length;
-}
-
-static unsigned short
-read_APP2_ICC (struct JPEG_info *j_info, FILE *fp, unsigned short length)
-{
- struct JPEG_APPn_ICC *app_data;
-
- app_data = NEW(1, struct JPEG_APPn_ICC);
- app_data->seq_id = get_unsigned_byte(fp); /* Starting at 1 */
- app_data->num_chunks = get_unsigned_byte(fp);
- app_data->length = length - 2;
- app_data->chunk = NEW(app_data->length, unsigned char);
- fread(app_data->chunk, 1, app_data->length, fp);
-
- add_APPn_marker(j_info, JM_APP2, JS_APPn_ICC, app_data);
-
- return length;
-}
-
-static int
-JPEG_copy_stream (struct JPEG_info *j_info,
- pdf_obj *stream, FILE *fp, int flags) /* flags unused yet */
-{
- JPEG_marker marker;
- long length, nb_read;
- int found_SOFn, count;
-
- rewind(fp);
- count = 0;
- found_SOFn = 0;
- while (!found_SOFn &&
- count < MAX_COUNT &&
- (marker = JPEG_get_marker(fp)) >= 0) {
- if (marker == JM_SOI ||
- (marker >= JM_RST0 && marker <= JM_RST7)) {
- work_buffer[0] = (char) 0xff;
- work_buffer[1] = (char) marker;
- pdf_add_stream(stream, work_buffer, 2);
- count++;
- continue;
- }
- length = get_unsigned_pair(fp) - 2;
- switch (marker) {
- case JM_SOF0: case JM_SOF1: case JM_SOF2: case JM_SOF3:
- case JM_SOF5: case JM_SOF6: case JM_SOF7: case JM_SOF9:
- case JM_SOF10: case JM_SOF11: case JM_SOF13: case JM_SOF14:
- case JM_SOF15:
- work_buffer[0] = (char) 0xff;
- work_buffer[1] = (char) marker;
- work_buffer[2] = ((length + 2) >> 8) & 0xff;
- work_buffer[3] = (length + 2) & 0xff;
- pdf_add_stream(stream, work_buffer, 4);
- while (length > 0) {
- nb_read = fread(work_buffer, sizeof(char),
- MIN(length, WORK_BUFFER_SIZE), fp);
- if (nb_read > 0)
- pdf_add_stream(stream, work_buffer, nb_read);
- length -= nb_read;
- }
- found_SOFn = 1;
- break;
- default:
- if (j_info->skipbits[count / 8] & (1 << (7 - (count % 8)))) {
- /* skip */
- while (length > 0) {
- nb_read = fread(work_buffer, sizeof(char),
- MIN(length, WORK_BUFFER_SIZE), fp);
- length -= nb_read;
- }
- } else {
- work_buffer[0] = (char) 0xff;
- work_buffer[1] = (char) marker;
- work_buffer[2] = ((length + 2) >> 8) & 0xff;
- work_buffer[3] = (length + 2) & 0xff;
- pdf_add_stream(stream, work_buffer, 4);
- while (length > 0) {
- nb_read = fread(work_buffer, sizeof(char),
- MIN(length, WORK_BUFFER_SIZE), fp);
- if (nb_read > 0)
- pdf_add_stream(stream, work_buffer, nb_read);
- length -= nb_read;
- }
- }
- }
- count++;
- }
-
- while ((length = fread(work_buffer,
- sizeof(char), WORK_BUFFER_SIZE, fp)) > 0) {
- pdf_add_stream(stream, work_buffer, length);
- }
-
- return (found_SOFn ? 0 : -1);
-}
-
-static int
-JPEG_scan_file (struct JPEG_info *j_info, FILE *fp)
-{
- JPEG_marker marker;
- unsigned short length;
- int found_SOFn, count;
- char app_sig[128];
-
- rewind(fp);
- count = 0;
- found_SOFn = 0;
- while (!found_SOFn &&
- (marker = JPEG_get_marker(fp)) >= 0) {
- if (marker == JM_SOI ||
- (marker >= JM_RST0 && marker <= JM_RST7)) {
- count++;
- continue;
- }
- length = get_unsigned_pair(fp) - 2;
- switch (marker) {
- case JM_SOF0: case JM_SOF1: case JM_SOF2: case JM_SOF3:
- case JM_SOF5: case JM_SOF6: case JM_SOF7: case JM_SOF9:
- case JM_SOF10: case JM_SOF11: case JM_SOF13: case JM_SOF14:
- case JM_SOF15:
- j_info->bits_per_component = get_unsigned_byte(fp);
- j_info->height = get_unsigned_pair(fp);
- j_info->width = get_unsigned_pair(fp);
- j_info->num_components = get_unsigned_byte(fp);
- found_SOFn = 1;
- break;
- case JM_APP0:
- if (length > 5) {
- if (fread(app_sig, sizeof(char), 5, fp) != 5)
- return -1;
- length -= 5;
- if (!memcmp(app_sig, "JFIF\000", 5)) {
- j_info->flags |= HAVE_APPn_JFIF;
- length -= read_APP0_JFIF(j_info, fp, length);
- } else if (!memcmp(app_sig, "JFXX", 5)) {
- length -= read_APP0_JFXX(j_info, fp, length);
- }
- }
- seek_relative(fp, length);
- break;
- case JM_APP1:
- if (length > 5) {
- if (fread(app_sig, sizeof(char), 5, fp) != 5)
- return -1;
- length -= 5;
- if (!memcmp(app_sig, "Exif\000", 5)) {
- j_info->flags |= HAVE_APPn_Exif;
- length -= read_APP1_Exif(j_info, fp, length);
- }
- }
- seek_relative(fp, length);
- break;
- case JM_APP2:
- if (length >= 14) {
- if (fread(app_sig, sizeof(char), 12, fp) != 12)
- return -1;
- length -= 12;
- if (!memcmp(app_sig, "ICC_PROFILE\000", 12)) {
- j_info->flags |= HAVE_APPn_ICC;
- length -= read_APP2_ICC(j_info, fp, length);
- if (count < MAX_COUNT) {
- j_info->skipbits[count / 8] |= (1 << (7 - (count % 8)));
- }
- }
- }
- seek_relative(fp, length);
- break;
- case JM_APP14:
- if (length > 5) {
- if (fread(app_sig, sizeof(char), 5, fp) != 5)
- return -1;
- length -= 5;
- if (!memcmp(app_sig, "Adobe", 5)) {
- j_info->flags |= HAVE_APPn_ADOBE;
- length -= read_APP14_Adobe(j_info, fp, length);
- } else {
- if (count < MAX_COUNT) {
- j_info->skipbits[count/8] |= (1 << (7 - (count % 8)));
- }
- }
- }
- seek_relative(fp, length);
- break;
- default:
- seek_relative(fp, length);
- if (marker >= JM_APP0 &&
- marker <= JM_APP15) {
- if (count < MAX_COUNT) {
- j_info->skipbits[count / 8] |= (1 << (7 - (count % 8)));
- }
- }
- break;
- }
- count++;
- }
-
- return (found_SOFn ? 0 : -1);
-}
-
-int
-jpeg_get_bbox (FILE *fp, long *width, long *height,
- double *xdensity, double *ydensity)
-{
- struct JPEG_info j_info;
-
- JPEG_info_init(&j_info);
-
- if (JPEG_scan_file(&j_info, fp) < 0) {
- WARN("%s: Not a JPEG file?", JPEG_DEBUG_STR);
- JPEG_info_clear(&j_info);
- return -1;
- }
-
- *width = j_info.width;
- *height = j_info.height;
-
- jpeg_get_density(&j_info, xdensity, ydensity);
-
- JPEG_info_clear(&j_info);
-
- return 0;
-}