From: Parvatha Elangovan <p.elangovan@intopix.com>
Date: Tue, 18 Sep 2007 13:07:29 +0000 (+0000)
Subject: Fixed issues with Reading and Writing TIF images in convert.c to avoid segmentation... 
X-Git-Tag: version.1.3~30
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a6ba04cdf49772f2e90515b277f174a0849bc8b6;p=openjpeg

Fixed issues with Reading and Writing TIF images in convert.c to avoid segmentation fault.
Fixed issues relating to using user specified rates for CINEMA option for multiple images.
---

diff --git a/ChangeLog b/ChangeLog
index 5e7a3331..11584840 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,10 @@ What's New for OpenJPEG
 ! : changed
 + : added
 
+September 18, 2007
+* [Parvatha] Fixed issues with Reading and Writing TIF images in convert.c to avoid segmentation fault. 
+* [Parvatha] Fixed issues relating to using user specified rates for CINEMA option for multiple images.
+
 September 17, 2007
 * [FOD] Fixed issues with cstr_info when codestream has components with different number of resolutions. 
 ! [FOD] OpenJPEG library interface modified to retain compatibility with version 1.2 
diff --git a/codec/convert.c b/codec/convert.c
index 013bc152..5e9f4969 100644
--- a/codec/convert.c
+++ b/codec/convert.c
@@ -1423,8 +1423,9 @@ typedef struct tiff_infoheader{
 }tiff_infoheader_t;
 
 int imagetotif(opj_image_t * image, const char *outfile) {
-	int width, height;
-	int bps,index;
+	int width, height, imgsize;
+	int bps,index,adjust = 0;
+	int last_i=0;
 	TIFF *tif;
 	tdata_t buf;
 	tstrip_t strip;
@@ -1448,7 +1449,8 @@ int imagetotif(opj_image_t * image, const char *outfile) {
 			}
 
 			width	= image->comps[0].w;
-			height= image->comps[0].h;
+			height	= image->comps[0].h;
+			imgsize = image->comps[0].w * image->comps[0].h ;
 			bps		= image->comps[0].prec;
 			/* Set tags */
 			TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width);
@@ -1465,39 +1467,163 @@ int imagetotif(opj_image_t * image, const char *outfile) {
 			index=0;
 			strip_size=0;
 			strip_size=TIFFStripSize(tif);
+			adjust = image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0;
 			for (strip = 0; strip < TIFFNumberOfStrips(tif); strip++) {
 				unsigned char *dat8;
-				int i;
+				int i, ssize;
+				ssize = TIFFStripSize(tif);
 				dat8 = buf;
 				if (image->comps[0].prec == 8){
-					for (i=0; i<TIFFStripSize(tif); i+=3) {	// 8 bits per pixel 
-						dat8[i+0] = image->comps[0].data[index] ;	// R 
-						dat8[i+1] = image->comps[1].data[index] ;	// G 
-						dat8[i+2] = image->comps[2].data[index] ;	// B 
-						index++;
+					for (i=0; i<ssize-2; i+=3) {	// 8 bits per pixel 
+						int r = 0,g = 0,b = 0;
+						if(index < imgsize){
+							r = image->comps[0].data[index];
+							g = image->comps[1].data[index];
+							b = image->comps[2].data[index];
+							if (image->comps[0].sgnd){			
+								r += adjust;
+								g += adjust;
+								b += adjust;
+							}
+							dat8[i+0] = r ;	// R 
+							dat8[i+1] = g ;	// G 
+							dat8[i+2] = b ;	// B 
+							index++;
+							last_i = i+3;
+						}else
+							break;
+					}
+					if(last_i < ssize){
+						for (i=last_i; i<ssize; i+=3) {	// 8 bits per pixel 
+							int r = 0,g = 0,b = 0;
+							if(index < imgsize){
+								r = image->comps[0].data[index];
+								g = image->comps[1].data[index];
+								b = image->comps[2].data[index];
+								if (image->comps[0].sgnd){			
+									r += adjust;
+									g += adjust;
+									b += adjust;
+								}
+								dat8[i+0] = r ;	// R 
+								if(i+1 <ssize) dat8[i+1] = g ;	else break;// G 
+								if(i+2 <ssize) dat8[i+2] = b ;	else break;// B 
+								index++;
+							}else
+								break;
+						}
 					}
 				}else if (image->comps[0].prec == 12){
-					for (i=0; i<TIFFStripSize(tif); i+=9) {	// 12 bits per pixel 
-						dat8[i+0] = (image->comps[0].data[index]>>8)<<4 | (image->comps[0].data[index]>>4);
-						dat8[i+1] = (image->comps[0].data[index]<<4)|((image->comps[1].data[index]>>8)& 0x0f);
-						dat8[i+2] = (image->comps[1].data[index]);
-						dat8[i+3] = (image->comps[2].data[index]>>8)<<4 | (image->comps[2].data[index]>>4);
-						dat8[i+4] = (image->comps[2].data[index]<<4)|((image->comps[0].data[index+1]>>8)& 0x0f);
-						dat8[i+5] = (image->comps[0].data[index+1]);
-						dat8[i+6] = (image->comps[1].data[index+1]>>8)<<4 | (image->comps[1].data[index+1]>>4);
-						dat8[i+7] = (image->comps[1].data[index+1]<<4)|((image->comps[2].data[index+1]>>8)& 0x0f);
-						dat8[i+8] = (image->comps[2].data[index+1]);
-						index+=2;
+					for (i=0; i<ssize-8; i+=9) {	// 12 bits per pixel 
+						int r = 0,g = 0,b = 0;
+						int r1 = 0,g1 = 0,b1 = 0;
+						if((index < imgsize)&(index+1 < imgsize)){
+							r  = image->comps[0].data[index];
+							g  = image->comps[1].data[index];
+							b  = image->comps[2].data[index];
+							r1 = image->comps[0].data[index+1];
+							g1 = image->comps[1].data[index+1];
+							b1 = image->comps[2].data[index+1];
+							if (image->comps[0].sgnd){														
+								r  += adjust;
+								g  += adjust;
+								b  += adjust;
+								r1 += adjust;
+								g1 += adjust;
+								b1 += adjust;
+							}
+							dat8[i+0] = (r >> 4);
+							dat8[i+1] = ((r & 0x0f) << 4 )|((g >> 8)& 0x0f);
+							dat8[i+2] = g ;		
+							dat8[i+3] = (b >> 4);
+							dat8[i+4] = ((b & 0x0f) << 4 )|((r1 >> 8)& 0x0f);
+							dat8[i+5] = r1;		
+							dat8[i+6] = (g1 >> 4);
+							dat8[i+7] = ((g1 & 0x0f)<< 4 )|((b1 >> 8)& 0x0f);
+							dat8[i+8] = b1;
+							index+=2;
+							last_i = i+9;
+						}else
+							break;
+					}
+					if(last_i < ssize){
+						for (i= last_i; i<ssize; i+=9) {	// 12 bits per pixel 
+							int r = 0,g = 0,b = 0;
+							int r1 = 0,g1 = 0,b1 = 0;
+							if((index < imgsize)&(index+1 < imgsize)){
+								r  = image->comps[0].data[index];
+								g  = image->comps[1].data[index];
+								b  = image->comps[2].data[index];
+								r1 = image->comps[0].data[index+1];
+								g1 = image->comps[1].data[index+1];
+								b1 = image->comps[2].data[index+1];
+								if (image->comps[0].sgnd){														
+									r  += adjust;
+									g  += adjust;
+									b  += adjust;
+									r1 += adjust;
+									g1 += adjust;
+									b1 += adjust;
+								}
+								dat8[i+0] = (r >> 4);
+								if(i+1 <ssize) dat8[i+1] = ((r & 0x0f) << 4 )|((g >> 8)& 0x0f); else break;
+								if(i+2 <ssize) dat8[i+2] = g ;			else break;
+								if(i+3 <ssize) dat8[i+3] = (b >> 4);	else break;
+								if(i+4 <ssize) dat8[i+4] = ((b & 0x0f) << 4 )|((r1 >> 8)& 0x0f);else break;
+								if(i+5 <ssize) dat8[i+5] = r1;			else break;
+								if(i+6 <ssize) dat8[i+6] = (g1 >> 4);	else break;
+								if(i+7 <ssize) dat8[i+7] = ((g1 & 0x0f)<< 4 )|((b1 >> 8)& 0x0f);else break;
+								if(i+8 <ssize) dat8[i+8] = b1;			else break;
+								index+=2;
+							}else
+								break;
+						}
 					}
 				}else if (image->comps[0].prec == 16){
-					for (i=0; i<TIFFStripSize(tif); i+=6) {	// 16 bits per pixel 
-						dat8[i+0] =  image->comps[0].data[index];//LSB
-						dat8[i+1] = (image->comps[0].data[index]>> 8);//MSB	 
-						dat8[i+2] =  image->comps[1].data[index]; 
-						dat8[i+3] = (image->comps[1].data[index]>> 8);	
-						dat8[i+4] =  image->comps[2].data[index];	 
-						dat8[i+5] = (image->comps[2].data[index]>> 8); 
-						index++;
+					for (i=0 ; i<ssize-5 ; i+=6) {	// 16 bits per pixel 
+						int r = 0,g = 0,b = 0;
+						if(index < imgsize){
+							r = image->comps[0].data[index];
+							g = image->comps[1].data[index];
+							b = image->comps[2].data[index];
+							if (image->comps[0].sgnd){
+							r += adjust;
+							g += adjust;
+							b += adjust;
+							}
+							dat8[i+0] =  r;//LSB
+							dat8[i+1] = (r >> 8);//MSB	 
+							dat8[i+2] =  g;		
+							dat8[i+3] = (g >> 8);
+							dat8[i+4] =  b;	
+							dat8[i+5] = (b >> 8);
+							index++;
+							last_i = i+6;
+						}else
+							break; 
+					}
+					if(last_i < ssize){
+						for (i=0 ; i<ssize ; i+=6) {	// 16 bits per pixel 
+							int r = 0,g = 0,b = 0;
+							if(index < imgsize){
+								r = image->comps[0].data[index];
+								g = image->comps[1].data[index];
+								b = image->comps[2].data[index];
+								if (image->comps[0].sgnd){
+									r += adjust;
+									g += adjust;
+									b += adjust;
+								}
+								dat8[i+0] =  r;//LSB
+								if(i+1 <ssize) dat8[i+1] = (r >> 8);else break;//MSB	 
+								if(i+2 <ssize) dat8[i+2] =  g;		else break;
+								if(i+3 <ssize) dat8[i+3] = (g >> 8);else break;
+								if(i+4 <ssize) dat8[i+4] =  b;		else break;
+								if(i+5 <ssize) dat8[i+5] = (b >> 8);else break;
+								index++;
+							}else
+								break; 
+						}						
 					}
 				}else{
 					fprintf(stderr,"Bits=%d, Only 8,12,16 bits implemented\n",image->comps[0].prec);
@@ -1544,20 +1670,37 @@ int imagetotif(opj_image_t * image, const char *outfile) {
 				dat8 = buf;
 				if (image->comps[0].prec == 8){
 					for (i=0; i<TIFFStripSize(tif); i+=1) {	// 8 bits per pixel 
-						dat8[i+0] = image->comps[0].data[index] ;
+						int r = 0;
+						r = image->comps[0].data[index];
+						if (image->comps[0].sgnd){
+							r  += adjust;
+						}
+						dat8[i+0] = r;
 						index++;
 					}
 				}else if (image->comps[0].prec == 12){
 					for (i = 0; i<TIFFStripSize(tif); i+=3) {	// 12 bits per pixel 
-						dat8[i+0] = (image->comps[0].data[index]>>8)<<4 | (image->comps[0].data[index]>>4);
-						dat8[i+1] = (image->comps[0].data[index]<<4)|((image->comps[0].data[index+1]>>8)& 0x0f);
-						dat8[i+2] = (image->comps[0].data[index+1]);
+						int r = 0, r1 = 0;
+						r  = image->comps[0].data[index];
+						r1 = image->comps[0].data[index+1];
+						if (image->comps[0].sgnd){
+							r  += adjust;
+							r1 += adjust;
+						}
+						dat8[i+0] = (r >> 4);
+						dat8[i+1] = ((r & 0x0f) << 4 )|((r1 >> 8)& 0x0f);
+						dat8[i+2] = r1 ;
 						index+=2;
 					}
 				}else if (image->comps[0].prec == 16){
 					for (i=0; i<TIFFStripSize(tif); i+=2) {	// 16 bits per pixel 
-						dat8[i+0] =  image->comps[0].data[index];
-						dat8[i+1] = (image->comps[0].data[index]>> 8);
+						int r = 0;
+						r = image->comps[0].data[index];
+						if (image->comps[0].sgnd){
+							r  += adjust;
+						}
+						dat8[i+0] = r;
+						dat8[i+1] = r >> 8;
 						index++;
 					}
 				}else{
@@ -1590,6 +1733,7 @@ opj_image_t* tiftoimage(const char *filename, opj_cparameters_t *parameters)
 	OPJ_COLOR_SPACE color_space;
 	opj_image_cmptparm_t cmptparm[3];
 	opj_image_t * image = NULL;
+	int imgsize;
 
 	tif = TIFFOpen(filename, "r");
 
@@ -1649,6 +1793,7 @@ opj_image_t* tiftoimage(const char *filename, opj_cparameters_t *parameters)
 		strip_size=0;
 		strip_size=TIFFStripSize(tif);
 		index = 0;
+		imgsize = image->comps[0].w * image->comps[0].h ;
 		/* Read the Image components*/
 		for (strip = 0; strip < TIFFNumberOfStrips(tif); strip++) {
 			unsigned char *dat8;
@@ -1658,39 +1803,48 @@ opj_image_t* tiftoimage(const char *filename, opj_cparameters_t *parameters)
 
 			if (Info.tiBps==12){
 				for (i=0; i<ssize; i+=9) {	/*12 bits per pixel*/
-					image->comps[0].data[index]   = ( dat8[i+0]<<4 )		|(dat8[i+1]>>4);
-					image->comps[1].data[index]   = ((dat8[i+1]& 0x0f)<< 8)	| dat8[i+2];
-					image->comps[2].data[index]   = ( dat8[i+3]<<4)			|(dat8[i+4]>>4);
-					image->comps[0].data[index+1] = ((dat8[i+4]& 0x0f)<< 8)	| dat8[i+5];
-					image->comps[1].data[index+1] = ( dat8[i+6] <<4)		|(dat8[i+7]>>4);
-					image->comps[2].data[index+1] = ((dat8[i+7]& 0x0f)<< 8)	| dat8[i+8];
-					index+=2;
+					if((index < imgsize)&(index+1 < imgsize)){
+						image->comps[0].data[index]   = ( dat8[i+0]<<4 )		|(dat8[i+1]>>4);
+						image->comps[1].data[index]   = ((dat8[i+1]& 0x0f)<< 8)	| dat8[i+2];
+						image->comps[2].data[index]   = ( dat8[i+3]<<4)			|(dat8[i+4]>>4);
+						image->comps[0].data[index+1] = ((dat8[i+4]& 0x0f)<< 8)	| dat8[i+5];
+						image->comps[1].data[index+1] = ( dat8[i+6] <<4)		|(dat8[i+7]>>4);
+						image->comps[2].data[index+1] = ((dat8[i+7]& 0x0f)<< 8)	| dat8[i+8];
+						index+=2;
+					}else
+						break;
 				}
 			}
 			else if( Info.tiBps==16){
 				for (i=0; i<ssize; i+=6) {	/* 16 bits per pixel */
-					image->comps[0].data[index] = ( dat8[i+1] << 8 ) | dat8[i+0];	// R 
-					image->comps[1].data[index] = ( dat8[i+3] << 8 ) | dat8[i+2];	// G 
-					image->comps[2].data[index] = ( dat8[i+5] << 8 ) | dat8[i+4];	// B 
-					if(parameters->cp_cinema){/* Rounding to 12 bits*/
-						image->comps[0].data[index] = (image->comps[0].data[index] + 0x08) >> 4 ;
-						image->comps[1].data[index] = (image->comps[1].data[index] + 0x08) >> 4 ;
-						image->comps[2].data[index] = (image->comps[2].data[index] + 0x08) >> 4 ;
-					}
-					index++;
+					if(index < imgsize){
+						image->comps[0].data[index] = ( dat8[i+1] << 8 ) | dat8[i+0]; // R 
+						image->comps[1].data[index] = ( dat8[i+3] << 8 ) | dat8[i+2]; // G 
+						image->comps[2].data[index] = ( dat8[i+5] << 8 ) | dat8[i+4]; // B 
+						if(parameters->cp_cinema){/* Rounding to 12 bits*/
+							image->comps[0].data[index] = (image->comps[0].data[index] + 0x08) >> 4 ;
+							image->comps[1].data[index] = (image->comps[1].data[index] + 0x08) >> 4 ;
+							image->comps[2].data[index] = (image->comps[2].data[index] + 0x08) >> 4 ;
+						}
+						index++;
+					}else
+						break;
 				}
 			}
 			else if ( Info.tiBps==8){
 				for (i=0; i<ssize; i+=3) {	/* 8 bits per pixel */
-					image->comps[0].data[index] = dat8[i+0];	// R 
-					image->comps[1].data[index] = dat8[i+1];	// G 
-					image->comps[2].data[index] = dat8[i+2];	// B 
-					if(parameters->cp_cinema){/* Rounding to 12 bits*/
-						image->comps[0].data[index] = image->comps[0].data[index] << 4 ;
-						image->comps[1].data[index] = image->comps[1].data[index] << 4 ;
-						image->comps[2].data[index] = image->comps[2].data[index] << 4 ;
-					}
-					index++;
+					if(index < imgsize){
+						image->comps[0].data[index] = dat8[i+0];// R 
+						image->comps[1].data[index] = dat8[i+1];// G 
+						image->comps[2].data[index] = dat8[i+2];// B 
+						if(parameters->cp_cinema){/* Rounding to 12 bits*/
+							image->comps[0].data[index] = image->comps[0].data[index] << 4 ;
+							image->comps[1].data[index] = image->comps[1].data[index] << 4 ;
+							image->comps[2].data[index] = image->comps[2].data[index] << 4 ;
+						}
+						index++;
+					}else
+						break;
 				}
 			}
 			else{
@@ -1744,21 +1898,30 @@ opj_image_t* tiftoimage(const char *filename, opj_cparameters_t *parameters)
 
 			if (Info.tiBps==12){
 				for (i=0; i<ssize; i+=3) {	/* 12 bits per pixel*/
-					image->comps[0].data[index] = ( dat8[i+0]<<4 )				|(dat8[i+1]>>4) ;
-					image->comps[0].data[index] = ((dat8[i+1]& 0x0f)<< 8)	| dat8[i+2];
-					index+=2;
+					if(index < imgsize){
+						image->comps[0].data[index]   = ( dat8[i+0]<<4 )		|(dat8[i+1]>>4) ;
+						image->comps[0].data[index+1] = ((dat8[i+1]& 0x0f)<< 8)	| dat8[i+2];
+						index+=2;
+					}else
+						break;
 				}
 			}
 			else if( Info.tiBps==16){
 				for (i=0; i<ssize; i+=2) {	/* 16 bits per pixel */
-					image->comps[0].data[index] = ( dat8[i+1] << 8 ) | dat8[i+0];
-					index++;
+					if(index < imgsize){
+						image->comps[0].data[index] = ( dat8[i+1] << 8 ) | dat8[i+0];
+						index++;
+					}else
+						break;
 				}
 			}
 			else if ( Info.tiBps==8){
 				for (i=0; i<ssize; i+=1) {	/* 8 bits per pixel */
-					image->comps[0].data[index] = dat8[i+0];
-					index++;
+					if(index < imgsize){
+						image->comps[0].data[index] = dat8[i+0];
+						index++;
+					}else
+						break;
 				}
 			}
 			else{
diff --git a/codec/image_to_j2k.c b/codec/image_to_j2k.c
index d3027a81..06b1215e 100644
--- a/codec/image_to_j2k.c
+++ b/codec/image_to_j2k.c
@@ -80,6 +80,8 @@ typedef struct img_folder{
 	char set_imgdir;
 	/** Enable Cod Format for output*/
 	char set_out_format;
+	/** User specified rate stored in case of cinema option*/
+	float *rates;
 }img_fol_t;
 
 void encode_help_display() {
@@ -482,7 +484,7 @@ void cinema_parameters(opj_cparameters_t *parameters){
 
 }
 
-void cinema_setup_encoder(opj_cparameters_t *parameters,opj_image_t *image){
+void cinema_setup_encoder(opj_cparameters_t *parameters,opj_image_t *image, img_fol_t *img_fol){
 	int i;
 	float temp_rate;
 	opj_poc_t *POC = NULL;
@@ -520,17 +522,19 @@ void cinema_setup_encoder(opj_cparameters_t *parameters,opj_image_t *image){
 	switch (parameters->cp_cinema){
 		case CINEMA2K_24:
 		case CINEMA4K_24:
-			for(i=0;i<parameters->tcp_numlayers;i++){
+			for(i=0 ; i<parameters->tcp_numlayers ; i++){
 				temp_rate = 0 ;
-				if (parameters->tcp_rates[i]== 0){
+				if (img_fol->rates[i]== 0){
 					parameters->tcp_rates[0]= ((float) (image->numcomps * image->comps[0].w * image->comps[0].h * image->comps[0].prec))/ 
 					(CINEMA_24_CS * 8 * image->comps[0].dx * image->comps[0].dy);
 				}else{
 					temp_rate =((float) (image->numcomps * image->comps[0].w * image->comps[0].h * image->comps[0].prec))/ 
-						(parameters->tcp_rates[i] * 8 * image->comps[0].dx * image->comps[0].dy);
+						(img_fol->rates[i] * 8 * image->comps[0].dx * image->comps[0].dy);
 					if (temp_rate > CINEMA_24_CS ){
 						parameters->tcp_rates[i]= ((float) (image->numcomps * image->comps[0].w * image->comps[0].h * image->comps[0].prec))/ 
-																				(CINEMA_24_CS * 8 * image->comps[0].dx * image->comps[0].dy);
+						(CINEMA_24_CS * 8 * image->comps[0].dx * image->comps[0].dy);
+					}else{
+						parameters->tcp_rates[i]= img_fol->rates[i];
 					}
 				}
 			}
@@ -538,17 +542,19 @@ void cinema_setup_encoder(opj_cparameters_t *parameters,opj_image_t *image){
 			break;
 		
 		case CINEMA2K_48:
-     	for(i=0;i<parameters->tcp_numlayers;i++){
+			for(i=0 ; i<parameters->tcp_numlayers ; i++){
 				temp_rate = 0 ;
-				if (parameters->tcp_rates[i]== 0){
+				if (img_fol->rates[i]== 0){
 					parameters->tcp_rates[0]= ((float) (image->numcomps * image->comps[0].w * image->comps[0].h * image->comps[0].prec))/ 
 					(CINEMA_48_CS * 8 * image->comps[0].dx * image->comps[0].dy);
 				}else{
 					temp_rate =((float) (image->numcomps * image->comps[0].w * image->comps[0].h * image->comps[0].prec))/ 
-						(parameters->tcp_rates[i] * 8 * image->comps[0].dx * image->comps[0].dy);
+						(img_fol->rates[i] * 8 * image->comps[0].dx * image->comps[0].dy);
 					if (temp_rate > CINEMA_48_CS ){
 						parameters->tcp_rates[0]= ((float) (image->numcomps * image->comps[0].w * image->comps[0].h * image->comps[0].prec))/ 
-																				(CINEMA_48_CS * 8 * image->comps[0].dx * image->comps[0].dy);
+						(CINEMA_48_CS * 8 * image->comps[0].dx * image->comps[0].dy);
+					}else{
+						parameters->tcp_rates[i]= img_fol->rates[i];
 					}
 				}
 			}
@@ -1766,6 +1772,10 @@ int main(int argc, char **argv) {
 	}
 	
 	if (parameters.cp_cinema){
+		img_fol.rates = (float*)malloc(parameters.tcp_numlayers * sizeof(float));
+		for(i=0; i< parameters.tcp_numlayers; i++){
+			img_fol.rates[i] = parameters.tcp_rates[i];
+		}
 		cinema_parameters(&parameters);
 	}				
 
@@ -1894,7 +1904,7 @@ int main(int argc, char **argv) {
 			parameters.tcp_mct = image->numcomps == 3 ? 1 : 0;
 
 			if(parameters.cp_cinema){
-				cinema_setup_encoder(&parameters,image);
+				cinema_setup_encoder(&parameters,image,&img_fol);
 			}
 
 			/* encode the destination image */
diff --git a/libopenjpeg/t2.c b/libopenjpeg/t2.c
index 5692a1ec..84d8bee7 100644
--- a/libopenjpeg/t2.c
+++ b/libopenjpeg/t2.c
@@ -591,6 +591,7 @@ int t2_encode_packets(opj_t2_t* t2,int tileno, opj_tcd_tile_t *tile, int maxlaye
 	int poc;
 	opj_image_t *image = t2->image;
 	opj_cp_t *cp = t2->cp;
+	opj_tcp_t *tcp = &cp->tcps[tileno];
 	int pocno = cp->cinema == CINEMA4K_24? 2: 1;
 	int maxcomp = cp->max_comp_size > 0 ? image->numcomps : 1;
 	
@@ -645,7 +646,7 @@ int t2_encode_packets(opj_t2_t* t2,int tileno, opj_tcd_tile_t *tile, int maxlaye
 						if (!cstr_info->packno) {
 							info_PK->start_pos = info_TL->end_header + 1;
 						} else {
-							info_PK->start_pos = (cp->tp_on && info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1;
+							info_PK->start_pos = ((cp->tp_on | tcp->POC)&& info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1;
 						}
 						info_PK->end_pos = info_PK->start_pos + e - 1;
 						info_PK->end_ph_pos += info_PK->start_pos - 1;	// End of packet header which now only represents the distance 
diff --git a/libopenjpeg/tcd.c b/libopenjpeg/tcd.c
index 8f59caa4..42c07384 100644
--- a/libopenjpeg/tcd.c
+++ b/libopenjpeg/tcd.c
@@ -1069,11 +1069,12 @@ bool tcd_rateallocate(opj_tcd_t *tcd, unsigned char *dest, int len, opj_codestre
 		  ==> possible to have some lossy layers and the last layer for sure lossless */
 		if ( ((cp->disto_alloc==1) && (tcd_tcp->rates[layno]>0)) || ((cp->fixed_quality==1) && (tcd_tcp->distoratio[layno]>0))) {
 			opj_t2_t *t2 = t2_create(tcd->cinfo, tcd->image, cp);
+			double thresh = 0;
 
 			for (i = 0; i < 32; i++) {
-				double thresh = (lo + hi) / 2;
 				int l = 0;
 				double distoachieved = 0;	/* fixed_quality */
+				thresh = (lo + hi) / 2;
 				
 				tcd_makelayer(tcd, layno, thresh, 0);
 				
@@ -1117,7 +1118,7 @@ bool tcd_rateallocate(opj_tcd_t *tcd, unsigned char *dest, int len, opj_codestre
 				}
 			}
 			success = 1;
-			goodthresh = stable_thresh;
+			goodthresh = stable_thresh == 0? thresh : stable_thresh;
 			t2_destroy(t2);
 		} else {
 			success = 1;