From c91847d549cc1c30eb15504a15ea9a6d5aa48165 Mon Sep 17 00:00:00 2001
From: "chirs241097@gmail.com"
 <chirs241097@gmail.com@c17bf020-1265-9734-9302-a83f62007ddb>
Date: Sun, 12 Jan 2014 14:43:14 +0000
Subject:

---
 hge/CxImage/ximajbg.cpp | 174 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 174 insertions(+)
 create mode 100644 hge/CxImage/ximajbg.cpp

(limited to 'hge/CxImage/ximajbg.cpp')

diff --git a/hge/CxImage/ximajbg.cpp b/hge/CxImage/ximajbg.cpp
new file mode 100644
index 0000000..ee7bc10
--- /dev/null
+++ b/hge/CxImage/ximajbg.cpp
@@ -0,0 +1,174 @@
+/*
+ * File:	ximajbg.cpp
+ * Purpose:	Platform Independent JBG Image Class Loader and Writer
+ * 18/Aug/2002 Davide Pizzolato - www.xdp.it
+ * CxImage version 7.0.0 31/Dec/2010
+ */
+
+#include "ximajbg.h"
+
+#if CXIMAGE_SUPPORT_JBG
+
+#include "ximaiter.h"
+
+#define JBIG_BUFSIZE 8192
+
+////////////////////////////////////////////////////////////////////////////////
+#if CXIMAGE_SUPPORT_DECODE
+////////////////////////////////////////////////////////////////////////////////
+bool CxImageJBG::Decode(CxFile *hFile)
+{
+	if (hFile == NULL) return false;
+
+	struct jbg_dec_state jbig_state;
+	uint32_t xmax = 4294967295UL, ymax = 4294967295UL;
+	uint32_t len, cnt;
+	uint8_t *buffer=0,*p;
+	int32_t result;
+
+  cx_try
+  {
+	jbg_dec_init(&jbig_state);
+	jbg_dec_maxsize(&jbig_state, xmax, ymax);
+
+	buffer = (uint8_t*)malloc(JBIG_BUFSIZE);
+	if (!buffer) cx_throw("Sorry, not enough memory available!");
+
+	result = JBG_EAGAIN;
+	do {
+		len = hFile->Read(buffer, 1, JBIG_BUFSIZE);
+		if (!len) break;
+		cnt = 0;
+		p = buffer;
+		while (len > 0 && (result == JBG_EAGAIN || result == JBG_EOK)) {
+			result = jbg_dec_in(&jbig_state, p, len, &cnt);
+			p += cnt;
+			len -= cnt;
+		}
+	} while (result == JBG_EAGAIN || result == JBG_EOK);
+
+	if (hFile->Error())
+		cx_throw("Problem while reading input file");
+	if (result != JBG_EOK && result != JBG_EOK_INTR)
+		cx_throw("Problem with input file"); 
+
+	int32_t w, h, bpp, planes, ew;
+
+	w = jbg_dec_getwidth(&jbig_state);
+	h = jbg_dec_getheight(&jbig_state);
+	planes = jbg_dec_getplanes(&jbig_state);
+	bpp = (planes+7)>>3;
+	ew = (w + 7)>>3;
+
+	if (info.nEscape == -1){
+		head.biWidth = w;
+		head.biHeight= h;
+		info.dwType = CXIMAGE_FORMAT_JBG;
+		cx_throw("output dimensions returned");
+	}
+
+	switch (planes){
+	case 1:
+		{
+			uint8_t* binary_image = jbg_dec_getimage(&jbig_state, 0);
+
+			if (!Create(w,h,1,CXIMAGE_FORMAT_JBG))
+				cx_throw("");
+
+			SetPaletteColor(0,255,255,255);
+			SetPaletteColor(1,0,0,0);
+
+			CImageIterator iter(this);
+			iter.Upset();
+			for (int32_t i=0;i<h;i++){
+				iter.SetRow(binary_image+i*ew,ew);
+				iter.PrevRow();
+			}
+
+			break;
+		}
+	default:
+		cx_throw("cannot decode images with more than 1 plane");
+	}
+
+	jbg_dec_free(&jbig_state);
+	free(buffer);
+
+  } cx_catch {
+	jbg_dec_free(&jbig_state);
+	if (buffer) free(buffer);
+	if (strcmp(message,"")) strncpy(info.szLastError,message,255);
+	if (info.nEscape == -1 && info.dwType == CXIMAGE_FORMAT_JBG) return true;
+	return false;
+  }
+	return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+#endif //CXIMAGE_SUPPORT_DECODE
+////////////////////////////////////////////////////////////////////////////////
+bool CxImageJBG::Encode(CxFile * hFile)
+{
+	if (EncodeSafeCheck(hFile)) return false;
+
+	if (head.biBitCount != 1){
+		strcpy(info.szLastError,"JBG can save only 1-bpp images");
+		return false;
+	}
+
+	int32_t w, h, bpp, planes, ew, i, j, x, y;
+
+	w = head.biWidth;
+	h = head.biHeight;
+	planes = 1;
+	bpp = (planes+7)>>3;
+	ew = (w + 7)>>3;
+
+	uint8_t mask;
+	RGBQUAD *rgb = GetPalette();
+	if (CompareColors(&rgb[0],&rgb[1])<0) mask=255; else mask=0;
+
+	uint8_t *buffer = (uint8_t*)malloc(ew*h*2);
+	if (!buffer) {
+		strcpy(info.szLastError,"Sorry, not enough memory available!");
+		return false;
+	}
+
+	for (y=0; y<h; y++){
+		i= y*ew;
+		j= (h-y-1)*info.dwEffWidth;
+		for (x=0; x<ew; x++){
+			buffer[i + x]=info.pImage[j + x]^mask;
+		}
+	}
+
+	struct jbg_enc_state jbig_state;
+	jbg_enc_init(&jbig_state, w, h, planes, &buffer, jbig_data_out, hFile);
+
+    //jbg_enc_layers(&jbig_state, 2);
+    //jbg_enc_lrlmax(&jbig_state, 800, 600);
+
+	// Specify a few other options (each is ignored if negative)
+	int32_t dl = -1, dh = -1, d = -1, l0 = -1, mx = -1;
+	int32_t options = JBG_TPDON | JBG_TPBON | JBG_DPON;
+	int32_t order = JBG_ILEAVE | JBG_SMID;
+	jbg_enc_lrange(&jbig_state, dl, dh);
+	jbg_enc_options(&jbig_state, order, options, l0, mx, -1);
+
+	// now encode everything and send it to data_out()
+	jbg_enc_out(&jbig_state);
+
+	// give encoder a chance to free its temporary data structures
+	jbg_enc_free(&jbig_state);
+
+	free(buffer);
+
+	if (hFile->Error()){
+		strcpy(info.szLastError,"Problem while writing JBG file");
+		return false;
+	}
+
+	return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+#endif 	// CXIMAGE_SUPPORT_JBG
+
-- 
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