[trunk] add j2k_pre_write_tile function in trunk from v2alpha

1 files changed, 36 insertions, 3 deletions

diff --git a/libopenjpeg/j2k.c b/libopenjpeg/j2k.c
index 91242a0f..c6fcb084 100644
--- a/libopenjpeg/j2k.c
+++ b/libopenjpeg/j2k.c
@@ -195,9 +195,15 @@ static void j2k_copy_tile_quantization_parameters(
 /**
  * Reads the tiles.
  */
-opj_bool j2k_decode_tiles (		opj_j2k_v2_t *p_j2k,
-								opj_stream_private_t *p_stream,
-								opj_event_mgr_t * p_manager);
+opj_bool j2k_decode_tiles (	opj_j2k_v2_t *p_j2k,
+							opj_stream_private_t *p_stream,
+							opj_event_mgr_t * p_manager);
+
+
+static opj_bool j2k_pre_write_tile ( opj_j2k_v2_t * p_j2k,
+					 	 	 	 	 OPJ_UINT32 p_tile_index,
+					 	 	 	 	 opj_stream_private_t *p_stream,
+					 	 	 	 	 opj_event_mgr_t * p_manager );
 
 static opj_bool j2k_update_image_data (opj_tcd_v2_t * p_tcd, OPJ_BYTE * p_data, opj_image_t* p_output_image);
 
@@ -8628,3 +8634,30 @@ opj_bool j2k_start_compress(opj_j2k_v2_t *p_j2k,
 
 	return OPJ_TRUE;
 }
+
+/*
+ *
+ */
+opj_bool j2k_pre_write_tile (	opj_j2k_v2_t * p_j2k,
+								OPJ_UINT32 p_tile_index,
+								opj_stream_private_t *p_stream,
+								opj_event_mgr_t * p_manager )
+{
+	if (p_tile_index != p_j2k->m_current_tile_number) {
+		opj_event_msg_v2(p_manager, EVT_ERROR, "The given tile index does not match." );
+		return OPJ_FALSE;
+	}
+
+	opj_event_msg_v2(p_manager, EVT_INFO, "tile number %d / %d\n", p_j2k->m_current_tile_number + 1, p_j2k->m_cp.tw * p_j2k->m_cp.th);
+
+	p_j2k->m_specific_param.m_encoder.m_current_tile_part_number = 0;
+	p_j2k->m_tcd->cur_totnum_tp = p_j2k->m_cp.tcps[p_tile_index].m_nb_tile_parts;
+	p_j2k->m_specific_param.m_encoder.m_current_poc_tile_part_number = 0;
+
+	/* initialisation before tile encoding  */
+	if (! tcd_init_encode_tile(p_j2k->m_tcd, p_j2k->m_current_tile_number)) {
+		return OPJ_FALSE;
+	}
+
+	return OPJ_TRUE;
+}