[trunk] WIP: enhance j2k_to_image with new get_decoded_tile functionality

CHANGES

@@ -6,6 +6,7 @@ What's New for OpenJPEG
 + : added
 
 November 17, 2011
++ [mickael] WIP: enhance j2k_to_image with new get_decoded_tile functionality
 + [mickael] WIP: clean j2k_dump and enhance j2k_dump with commit 1052.
 + [mickael] WIP: add a set decoded resolution factor function and update j2k_to_image help about decoded region.
 

applications/codec/j2k_to_image.c

@@ -143,7 +143,11 @@ void decode_help_display(void) {
 	fprintf(stdout,"  -d <x0,y0,x1,y1>\n");
 	fprintf(stdout,"    OPTIONAL\n");
 	fprintf(stdout,"    Decoding area\n");
-	fprintf(stdout,"    By default all tiles header are read.\n");
+	fprintf(stdout,"    By default all the image is decoded.\n");
+	fprintf(stdout,"  -t <tile_number>\n");
+	fprintf(stdout,"    OPTIONAL\n");
+	fprintf(stdout,"    Set the tile number of the decoded tile. Follow the JPEG2000 convention from left-up to bottom-up\n");
+	fprintf(stdout,"    By default all tiles are decoded.\n");
 	fprintf(stdout,"\n");
 /* UniPG>> */
 #ifdef USE_JPWL
@@ -271,8 +275,12 @@ static int infile_format(const char *fname)
 		return -1;
 
 	memset(buf, 0, 12);
-	fread(buf, 1, 12, reader);
+	unsigned int l_nb_read = fread(buf, 1, 12, reader);
 	fclose(reader);
+	if (l_nb_read != 12)
+		return -1;
+
+
 
 	ext_format = get_file_format(fname);
 
@@ -316,7 +324,7 @@ int parse_cmdline_decoder(int argc, char **argv, opj_dparameters_t *parameters,i
 		{"OutFor",REQ_ARG, NULL ,'O'},
 	};
 
-	const char optlist[] = "i:o:r:l:x:d:"
+	const char optlist[] = "i:o:r:l:x:d:t:"
 
 /* UniPG>> */
 #ifdef USE_JPWL
@@ -468,6 +476,16 @@ int parse_cmdline_decoder(int argc, char **argv, opj_dparameters_t *parameters,i
 
 				free(ROI_values);
 			}
+			break;
+
+			/* ----------------------------------------------------- */
+
+			case 't':     		/* Input tile index */
+			{
+				sscanf(opj_optarg, "%d", &parameters->tile_index);
+				parameters->nb_tile_to_decode = 1;
+			}
+			break;
 
 				/* ----------------------------------------------------- */								
 
@@ -785,37 +803,47 @@ int main(int argc, char **argv)
 			return EXIT_FAILURE;
 		}
 
-		if (! opj_set_decode_area(	dinfo, image,
-									parameters.DA_x0, parameters.DA_y0, parameters.DA_x1, parameters.DA_y1)){
-			fprintf(stderr, "ERROR -> j2k_to_image: failed to set the decoded area\n");
-			opj_stream_destroy(cio);
-			opj_destroy_codec(dinfo);
-			opj_image_destroy(image);
-			fclose(fsrc);
-			return EXIT_FAILURE;
+		if (!parameters.nb_tile_to_decode) {
+			// Optional if you want decode the entire image
+			if (!opj_set_decode_area(dinfo, image, parameters.DA_x0,
+					parameters.DA_y0, parameters.DA_x1, parameters.DA_y1)){
+				fprintf(stderr,
+						"ERROR -> j2k_to_image: failed to set the decoded area\n");
+				opj_stream_destroy(cio);
+				opj_destroy_codec(dinfo);
+				opj_image_destroy(image);
+				fclose(fsrc);
+				return EXIT_FAILURE;
 			}
 
-		/* Get the decoded image */
-		if ( !( opj_decode_v2(dinfo, cio, image) && opj_end_decompress(dinfo,cio) ) ) {
-			fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
-			opj_destroy_codec(dinfo);
-			opj_stream_destroy(cio);
-			opj_image_destroy(image);
-			fclose(fsrc);
-			return EXIT_FAILURE;
+			/* Get the decoded image */
+			if (!(opj_decode_v2(dinfo, cio, image) && opj_end_decompress(dinfo,
+					cio))) {
+				fprintf(stderr,
+						"ERROR -> j2k_to_image: failed to decode image!\n");
+				opj_destroy_codec(dinfo);
+				opj_stream_destroy(cio);
+				opj_image_destroy(image);
+				fclose(fsrc);
+				return EXIT_FAILURE;
+			}
+		}
+		else {
+			if (!opj_get_decoded_tile(dinfo, cio, image, parameters.tile_index)) {
+				fprintf(stderr, "ERROR -> j2k_to_image: failed to decode tile!\n");
+				opj_destroy_codec(dinfo);
+				opj_stream_destroy(cio);
+				opj_image_destroy(image);
+				fclose(fsrc);
+				return EXIT_FAILURE;
+			}
+			fprintf(stdout, "tile %d is decoded!\n\n", parameters.tile_index);
 		}
-
-		/*opj_dump_codec(dinfo, OPJ_J2K_MH_IND, stdout );
-
-		cstr_index = opj_get_cstr_index(dinfo);*/
-
-		fprintf(stderr, "image is decoded!\n");
 
 		/* Close the byte stream */
 		opj_stream_destroy(cio);
 		fclose(fsrc);
 
-
 		if(image->color_space == CLRSPC_SYCC){
 			color_sycc_to_rgb(image); /* FIXME */
 		}

libopenjpeg/j2k.c

@@ -8371,6 +8371,12 @@ opj_bool j2k_get_tile(	opj_j2k_v2_t *p_j2k,
 		return OPJ_FALSE;
 	}
 
+	if (tile_index >= p_j2k->m_cp.th * p_j2k->m_cp.tw) {
+		opj_event_msg_v2(p_manager, EVT_ERROR, "Decoded tile index is "
+				"inconsistent with the number of tiles in the codestream (%d vs %d).\n", tile_index, p_j2k->m_cp.th * p_j2k->m_cp.tw );
+		return OPJ_FALSE;
+	}
+
 	/* Compute the dimension of the desired tile*/
 	l_tile_x = tile_index % p_j2k->m_cp.tw;
 	l_tile_y = tile_index / p_j2k->m_cp.tw;

libopenjpeg/openjpeg.h

@@ -439,6 +439,11 @@ typedef struct opj_dparameters {
 	/** Verbose mode */
 	opj_bool m_verbose;
 
+	/** tile number ot the decoded tile*/
+	OPJ_UINT32 tile_index;
+	/** Nb of tile to decode */
+	OPJ_UINT32 nb_tile_to_decode;
+
 	/*@}*/
 
 /* UniPG>> */

tests/nonregression/test_suite.ctest.in

@@ -96,6 +96,11 @@ j2k_to_image -i @INPUT_CONF_PATH@/p1_06.j2k -o @TEMP_PATH@/p1_06_4.j2k.png -d 3,
 j2k_to_image -i @INPUT_CONF_PATH@/p1_06.j2k -o @TEMP_PATH@/p1_06_5.j2k.png -d 4,4,7,7 -r 1
 j2k_to_image -i @INPUT_CONF_PATH@/p1_06.j2k -o @TEMP_PATH@/p1_06_6.j2k.png -d 4,4,5,5 -r 1
 
+j2k_to_image -i @INPUT_CONF_PATH@/p1_06.j2k -o @TEMP_PATH@/p1_06.j2k_0.png -t 0
+j2k_to_image -i @INPUT_CONF_PATH@/p1_06.j2k -o @TEMP_PATH@/p1_06_1.j2k_5.png -t 5
+j2k_to_image -i @INPUT_CONF_PATH@/p1_06.j2k -o @TEMP_PATH@/p1_06_2.j2k_9.png -t 9
+j2k_to_image -i @INPUT_CONF_PATH@/p1_06.j2k -o @TEMP_PATH@/p1_06_3.j2k_15.png -t 15
+
 # prec=4; nb_c=3 ; signd=yes
 j2k_to_image -i @INPUT_CONF_PATH@/p0_04.j2k -o @TEMP_PATH@/p0_04.j2k.png -d 0,0,256,256
 j2k_to_image -i @INPUT_CONF_PATH@/p0_04.j2k -o @TEMP_PATH@/p0_04_1.j2k.png -d 128,0,256,128