From f3170bf64e39a9f9d512adde7e7b315f156fed8e Mon Sep 17 00:00:00 2001
From: Francois-Olivier Devaux <fodevaux@users.noreply.github.com>
Date: Thu, 10 May 2007 14:13:30 +0000
Subject: [PATCH] Possibility to choose to apply MCT (multiple component
 transform) enabled, and new decoding_limit: DECODE_ALL_BUT_PACKETS

---
 codec/image_to_j2k.c |  2 ++
 libopenjpeg/j2k.c    | 37 ++++++++++++++++++++-----------------
 2 files changed, 22 insertions(+), 17 deletions(-)

diff --git a/codec/image_to_j2k.c b/codec/image_to_j2k.c
index 60581f51..bc5af747 100644
--- a/codec/image_to_j2k.c
+++ b/codec/image_to_j2k.c
@@ -1542,6 +1542,8 @@ int main(int argc, char **argv) {
 					}
 				break;
 		}
+			/* Decide if MCT should be used */
+			parameters.tcp_mct = image->numcomps == 3 ? 1 : 0;
 
 			if(parameters.cp_cinema){
 				cinema_setup_encoder(&parameters,image);
diff --git a/libopenjpeg/j2k.c b/libopenjpeg/j2k.c
index 7c04256a..bf5acf5c 100644
--- a/libopenjpeg/j2k.c
+++ b/libopenjpeg/j2k.c
@@ -1474,24 +1474,27 @@ static void j2k_write_eoc(opj_j2k_t *j2k) {
 static void j2k_read_eoc(opj_j2k_t *j2k) {
 	int i, tileno;
 
-#ifndef NO_PACKETS_DECODING  
-	opj_tcd_t *tcd = tcd_create(j2k->cinfo);
-	tcd_malloc_decode(tcd, j2k->image, j2k->cp);
-	for (i = 0; i < j2k->cp->tileno_size; i++) {
-		tileno = j2k->cp->tileno[i];
-		tcd_decode_tile(tcd, j2k->tile_data[tileno], j2k->tile_len[tileno], tileno);
-		opj_free(j2k->tile_data[tileno]);
-		j2k->tile_data[tileno] = NULL;
+	/* if packets should be decoded */
+	if (j2k->cp->limit_decoding != DECODE_ALL_BUT_PACKETS) {
+		opj_tcd_t *tcd = tcd_create(j2k->cinfo);
+		tcd_malloc_decode(tcd, j2k->image, j2k->cp);
+		for (i = 0; i < j2k->cp->tileno_size; i++) {
+			tileno = j2k->cp->tileno[i];
+			tcd_decode_tile(tcd, j2k->tile_data[tileno], j2k->tile_len[tileno], tileno);
+			opj_free(j2k->tile_data[tileno]);
+			j2k->tile_data[tileno] = NULL;
+		}
+		tcd_free_decode(tcd);
+		tcd_destroy(tcd);
 	}
-	tcd_free_decode(tcd);
-	tcd_destroy(tcd);
-#else 
-	for (i = 0; i < j2k->cp->tileno_size; i++) {
-		tileno = j2k->cp->tileno[i];
-		opj_free(j2k->tile_data[tileno]);
-		j2k->tile_data[tileno] = NULL;
+	/* if packets should not be decoded  */
+	else {
+		for (i = 0; i < j2k->cp->tileno_size; i++) {
+			tileno = j2k->cp->tileno[i];
+			opj_free(j2k->tile_data[tileno]);
+			j2k->tile_data[tileno] = NULL;
+		}
 	}
-#endif
 	
 	j2k->state = J2K_STATE_MT;
 }
@@ -2083,7 +2086,7 @@ void j2k_setup_encoder(opj_j2k_t *j2k, opj_cparameters_t *parameters, opj_image_
 		}
 		tcp->csty = parameters->csty;
 		tcp->prg = parameters->prog_order;
-		tcp->mct = image->numcomps == 3 ? 1 : 0;
+		tcp->mct = parameters->tcp_mct; 
 
 		numpocs_tile = 0;
 		tcp->POC = 0;