opj_event_mgr_t * p_manager );
/**
- * Reads a PPT marker (Packed packet headers, tile-part header)
+ * Reads values from a SOT marker (Start of tile-part)
*
- * @param p_header_data the data contained in the PPT box.
- * @param p_j2k the jpeg2000 codec.
+ * the j2k decoder state is not affected. No side effects, no checks except for p_header_size.
+ *
+ * @param p_header_data the data contained in the SOT marker.
+ * @param p_header_size the size of the data contained in the SOT marker.
+ * @param p_tile_no Isot.
+ * @param p_tot_len Psot.
+ * @param p_current_part TPsot.
+ * @param p_num_parts TNsot.
+ * @param p_manager the user event manager.
+ */
+static OPJ_BOOL opj_j2k_get_sot_values(OPJ_BYTE * p_header_data,
+ OPJ_UINT32 p_header_size,
+ OPJ_UINT32* p_tile_no,
+ OPJ_UINT32* p_tot_len,
+ OPJ_UINT32* p_current_part,
+ OPJ_UINT32* p_num_parts,
+ opj_event_mgr_t * p_manager );
+/**
+ * Reads a SOT marker (Start of tile-part)
+ *
+ * @param p_header_data the data contained in the SOT marker.
+ * @param p_j2k the jpeg2000 codec.
* @param p_header_size the size of the data contained in the PPT marker.
- * @param p_manager the user event manager.
+ * @param p_manager the user event manager.
*/
static OPJ_BOOL opj_j2k_read_sot ( opj_j2k_t *p_j2k,
OPJ_BYTE * p_header_data,
static OPJ_BOOL opj_j2k_is_cinema_compliant(opj_image_t *image, OPJ_UINT16 rsiz, opj_event_mgr_t *p_manager);
+/**
+ * Checks for invalid number of tile-parts in SOT marker (TPsot==TNsot). See issue 254.
+ *
+ * @param p_stream the stream to read data from.
+ * @param tile_no tile number we're looking for.
+ * @param p_correction_needed output value. if true, non conformant codestream needs TNsot correction.
+ * @param p_manager the user event manager.
+ *
+ * @return true if the function was successful, false else.
+ */
+static OPJ_BOOL opj_j2k_need_nb_tile_parts_correction(opj_stream_private_t *p_stream, OPJ_UINT32 tile_no, OPJ_BOOL* p_correction_needed, opj_event_mgr_t * p_manager );
+
/*@}*/
/*@}*/
return OPJ_TRUE;
}
+static OPJ_BOOL opj_j2k_get_sot_values(OPJ_BYTE * p_header_data,
+ OPJ_UINT32 p_header_size,
+ OPJ_UINT32* p_tile_no,
+ OPJ_UINT32* p_tot_len,
+ OPJ_UINT32* p_current_part,
+ OPJ_UINT32* p_num_parts,
+ opj_event_mgr_t * p_manager )
+{
+ /* preconditions */
+ assert(p_header_data != 00);
+ assert(p_manager != 00);
+
+ /* Size of this marker is fixed = 12 (we have already read marker and its size)*/
+ if (p_header_size != 8) {
+ opj_event_msg(p_manager, EVT_ERROR, "Error reading SOT marker\n");
+ return OPJ_FALSE;
+ }
+
+ opj_read_bytes(p_header_data,p_tile_no,2); /* Isot */
+ p_header_data+=2;
+ opj_read_bytes(p_header_data,p_tot_len,4); /* Psot */
+ p_header_data+=4;
+ opj_read_bytes(p_header_data,p_current_part,1); /* TPsot */
+ ++p_header_data;
+ opj_read_bytes(p_header_data,p_num_parts ,1); /* TNsot */
+ ++p_header_data;
+ return OPJ_TRUE;
+}
+
OPJ_BOOL opj_j2k_read_sot ( opj_j2k_t *p_j2k,
OPJ_BYTE * p_header_data,
OPJ_UINT32 p_header_size,
OPJ_UINT32 l_tile_x,l_tile_y;
/* preconditions */
- assert(p_header_data != 00);
+
assert(p_j2k != 00);
assert(p_manager != 00);
-
- /* Size of this marker is fixed = 12 (we have already read marker and its size)*/
- if (p_header_size != 8) {
+
+ if (! opj_j2k_get_sot_values(p_header_data, p_header_size, &(p_j2k->m_current_tile_number), &l_tot_len, &l_current_part, &l_num_parts, p_manager)) {
opj_event_msg(p_manager, EVT_ERROR, "Error reading SOT marker\n");
return OPJ_FALSE;
}
l_cp = &(p_j2k->m_cp);
- opj_read_bytes(p_header_data,&(p_j2k->m_current_tile_number),2); /* Isot */
- p_header_data+=2;
/* testcase 2.pdf.SIGFPE.706.1112 */
if (p_j2k->m_current_tile_number >= l_cp->tw * l_cp->th) {
/* Optimization possible here with a more complex data structure and with the removing of tiles */
/* since the time taken by this function can only grow at the time */
- opj_read_bytes(p_header_data,&l_tot_len,4); /* Psot */
- p_header_data+=4;
-
/* PSot should be equal to zero or >=14 or <= 2^32-1 */
if ((l_tot_len !=0 ) && (l_tot_len < 14) )
{
p_j2k->m_specific_param.m_decoder.m_last_tile_part = 1;
}
- opj_read_bytes(p_header_data,&l_current_part ,1); /* TPsot */
- ++p_header_data;
-
- opj_read_bytes(p_header_data,&l_num_parts ,1); /* TNsot */
- ++p_header_data;
-
if (l_num_parts != 0) { /* Number of tile-part header is provided by this tile-part header */
+ l_num_parts += p_j2k->m_specific_param.m_decoder.m_nb_tile_parts_correction;
/* Useful to manage the case of textGBR.jp2 file because two values of TNSot are allowed: the correct numbers of
* tile-parts for that tile and zero (A.4.2 of 15444-1 : 2002). */
if (l_tcp->m_nb_tile_parts) {
}
}
+static OPJ_BOOL opj_j2k_need_nb_tile_parts_correction(opj_stream_private_t *p_stream, OPJ_UINT32 tile_no, OPJ_BOOL* p_correction_needed, opj_event_mgr_t * p_manager )
+{
+ OPJ_BYTE l_header_data[10];
+ OPJ_OFF_T l_stream_pos_backup;
+ OPJ_UINT32 l_current_marker;
+ OPJ_UINT32 l_marker_size;
+ OPJ_UINT32 l_tile_no, l_tot_len, l_current_part, l_num_parts;
+
+ /* initialize to no correction needed */
+ *p_correction_needed = OPJ_FALSE;
+
+ l_stream_pos_backup = opj_stream_tell(p_stream);
+ if (l_stream_pos_backup == -1) {
+ /* let's do nothing */
+ return OPJ_TRUE;
+ }
+
+ for (;;) {
+ /* Try to read 2 bytes (the next marker ID) from stream and copy them into the buffer */
+ if (opj_stream_read_data(p_stream,l_header_data, 2, p_manager) != 2) {
+ /* assume all is OK */
+ if (! opj_stream_seek(p_stream, l_stream_pos_backup, p_manager)) {
+ return OPJ_FALSE;
+ }
+ return OPJ_TRUE;
+ }
+
+ /* Read 2 bytes from buffer as the new marker ID */
+ opj_read_bytes(l_header_data, &l_current_marker, 2);
+
+ if (l_current_marker != J2K_MS_SOT) {
+ /* assume all is OK */
+ if (! opj_stream_seek(p_stream, l_stream_pos_backup, p_manager)) {
+ return OPJ_FALSE;
+ }
+ return OPJ_TRUE;
+ }
+
+ /* Try to read 2 bytes (the marker size) from stream and copy them into the buffer */
+ if (opj_stream_read_data(p_stream, l_header_data, 2, p_manager) != 2) {
+ opj_event_msg(p_manager, EVT_ERROR, "Stream too short\n");
+ return OPJ_FALSE;
+ }
+
+ /* Read 2 bytes from the buffer as the marker size */
+ opj_read_bytes(l_header_data, &l_marker_size, 2);
+
+ /* Check marker size for SOT Marker */
+ if (l_marker_size != 10) {
+ opj_event_msg(p_manager, EVT_ERROR, "Inconsistent marker size\n");
+ return OPJ_FALSE;
+ }
+ l_marker_size -= 2;
+
+ if (opj_stream_read_data(p_stream, l_header_data, l_marker_size, p_manager) != l_marker_size) {
+ opj_event_msg(p_manager, EVT_ERROR, "Stream too short\n");
+ return OPJ_FALSE;
+ }
+
+ if (! opj_j2k_get_sot_values(l_header_data, l_marker_size, &l_tile_no, &l_tot_len, &l_current_part, &l_num_parts, p_manager)) {
+ return OPJ_FALSE;
+ }
+
+ if (l_tile_no == tile_no) {
+ /* we found what we were looking for */
+ break;
+ }
+
+ if ((l_tot_len == 0U) || (l_tot_len < 14U)) {
+ /* last SOT until EOC or invalid Psot value */
+ /* assume all is OK */
+ if (! opj_stream_seek(p_stream, l_stream_pos_backup, p_manager)) {
+ return OPJ_FALSE;
+ }
+ return OPJ_TRUE;
+ }
+ l_tot_len -= 12U;
+ /* look for next SOT marker */
+ if (opj_stream_skip(p_stream, (OPJ_OFF_T)(l_tot_len), p_manager) != (OPJ_OFF_T)(l_tot_len)) {
+ /* assume all is OK */
+ if (! opj_stream_seek(p_stream, l_stream_pos_backup, p_manager)) {
+ return OPJ_FALSE;
+ }
+ return OPJ_TRUE;
+ }
+ }
+
+ /* check for correction */
+ if (l_current_part == l_num_parts) {
+ *p_correction_needed = OPJ_TRUE;
+ }
+
+ if (! opj_stream_seek(p_stream, l_stream_pos_backup, p_manager)) {
+ return OPJ_FALSE;
+ }
+ return OPJ_TRUE;
+}
+
OPJ_BOOL opj_j2k_read_tile_header( opj_j2k_t * p_j2k,
OPJ_UINT32 * p_tile_index,
OPJ_UINT32 * p_data_size,
if (! opj_j2k_read_sod(p_j2k, p_stream, p_manager)) {
return OPJ_FALSE;
}
-
+ if (p_j2k->m_specific_param.m_decoder.m_can_decode && !p_j2k->m_specific_param.m_decoder.m_nb_tile_parts_correction_checked) {
+ /* Issue 254 */
+ OPJ_BOOL l_correction_needed;
+
+ p_j2k->m_specific_param.m_decoder.m_nb_tile_parts_correction_checked = 1;
+ if(!opj_j2k_need_nb_tile_parts_correction(p_stream, p_j2k->m_current_tile_number, &l_correction_needed, p_manager)) {
+ opj_event_msg(p_manager, EVT_ERROR, "opj_j2k_apply_nb_tile_parts_correction error\n");
+ return OPJ_FALSE;
+ }
+ if (l_correction_needed) {
+ OPJ_UINT32 l_nb_tiles = p_j2k->m_cp.tw * p_j2k->m_cp.th;
+ OPJ_UINT32 l_tile_no;
+
+ p_j2k->m_specific_param.m_decoder.m_can_decode = 0;
+ p_j2k->m_specific_param.m_decoder.m_nb_tile_parts_correction = 1;
+ /* correct tiles */
+ for (l_tile_no = 0U; l_tile_no < l_nb_tiles; ++l_tile_no) {
+ if (p_j2k->m_cp.tcps[l_tile_no].m_nb_tile_parts != 0U) {
+ p_j2k->m_cp.tcps[l_tile_no].m_nb_tile_parts+=1;
+ }
+ }
+ opj_event_msg(p_manager, EVT_WARNING, "Non conformant codestream TPsot==TNsot.\n");
+ }
+ }
if (! p_j2k->m_specific_param.m_decoder.m_can_decode){
/* Try to read 2 bytes (the next marker ID) from stream and copy them into the buffer */
if (opj_stream_read_data(p_stream,p_j2k->m_specific_param.m_decoder.m_header_data,2,p_manager) != 2) {
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