shithub: jbig2

Download patch

ref: 559870f8c41c8e7741035e28801cf6f8a911bd25
parent: c47c3b08840eb8e709fad19c018845d2ec00087d
author: giles <giles@ded80894-8fb9-0310-811b-c03f3676ab4d>
date: Sat Jun 15 12:16:20 EDT 2002 

actually add the segment header source


git-svn-id: http://svn.ghostscript.com/jbig2dec/trunk@66 ded80894-8fb9-0310-811b-c03f3676ab4d


--- /dev/null
+++ b/jbig2_segment.c
@@ -1,0 +1,132 @@
+/*
+    jbig2dec
+    
+    Copyright (c) 2002 artofcode LLC.
+    
+    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.
+
+    $Id: jbig2_segment.c,v 1.1 2002/06/15 16:16:20 giles Exp $
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "jbig2.h"
+#include "jbig2_priv.h"
+#include "jbig2_symbol_dict.h"
+
+int jbig2_write_segment (Jbig2Ctx *ctx, Jbig2SegmentHeader *sh,
+			 const uint8_t *segment_data)
+{
+  jbig2_error(ctx, JBIG2_SEVERITY_INFO, sh->segment_number,
+	      "Segment %d, flags=%x, type=%d, data_length=%d",
+	      sh->segment_number, sh->flags, sh->flags & 63,
+	      sh->data_length);
+  switch (sh->flags & 63)
+    {
+    case 0:
+      return jbig2_symbol_dictionary(ctx, sh, segment_data);
+    case 38:
+      return jbig2_immediate_generic_region(ctx, sh, segment_data);
+    }
+  return 0;
+}
+
+#ifdef GILES
+
+int dump_segment (Jbig2Ctx *ctx)
+{
+  Jbig2SegmentHeader *sh;
+  Jbig2SymbolDictionary *sd;
+  Jbig2PageInfo	*page_info;
+
+  sh = jbig2_read_segment_header(ctx);
+  if (sh == NULL)
+    return TRUE;
+  
+  printf("segment %d (%d bytes)\t", sh->segment_number, sh->data_length);
+  switch (sh->flags & 63)
+    {
+    case 0:
+      sd = jbig2_read_symbol_dictionary(ctx);
+	  printf("\n");
+      dump_symbol_dictionary(sd);
+      break;
+	case 4:
+		printf("intermediate text region:");
+		break;
+	case 6:
+		printf("immediate text region:");
+		break;
+	case 7:
+		printf("immediate lossless text region:");
+		break;
+	case 16:
+		printf("pattern dictionary:");
+		break;
+	case 20:
+		printf("intermediate halftone region:");
+		break;
+	case 22:
+		printf("immediate halftone region:");
+		break;
+	case 23:
+		printf("immediate lossless halftone region:");
+		break;
+	case 36:
+		printf("intermediate generic region:");
+		break;
+	case 38:
+		printf("immediate generic region:");
+		break;
+	case 39:
+		printf("immediate lossless generic region:");
+		break;
+	case 40:
+		printf("intermediate generic refinement region:");
+		break;
+	case 42:
+		printf("immediate generic refinement region:");
+		break;
+	case 43:
+		printf("immediate lossless generic refinement region:");
+		break;
+	case 48:
+		page_info = jbig2_read_page_info(ctx);
+		printf("page info:\n");
+		if (page_info) dump_page_info(page_info);
+		break;
+	case 49:
+		printf("end of page");
+		break;
+	case 50:
+		printf("end of stripe");
+		break;
+        case 51:
+            printf("end of file\n");
+            return TRUE;
+            break;
+	case 52:
+		printf("profiles:");
+		break;
+	case 53:
+		printf("tables:");
+		break;
+	case 62:
+		printf("extension:");
+		break;
+	default:
+		printf("UNKNOWN SEGMENT TYPE!!!");
+    }
+	printf("\tflags = %02x, page %d\n",
+	  sh->flags, sh->page_association);
+
+  ctx->offset += sh->data_length;
+  return FALSE;
+}
+
+#endif /* GILES */