+ : added
November 8, 2011
++ [mickael] WIP: add get_decoded_tile functionality
+ [mickael] WIP: clean and enhance j2K file
+ [mickael] WIP: clean and enhance openjpeg.c
+ [mickael] WIP: clean and enhance openjpeg.h and add deprecated macro
cstr_index = opj_get_cstr_index(dinfo);
-#ifdef MSD
- fprintf(stdout,"Setting decoding area to %d,%d,%d,%d\n",
- parameters.DA_x0, parameters.DA_y0, parameters.DA_x1, parameters.DA_y1);
-
-
- /* FIXME WIP_MSD <*/
- if (! opj_set_decode_area( dinfo,
- parameters.DA_x0, parameters.DA_y0,
- parameters.DA_x1, parameters.DA_y1)){
- fprintf(stderr, "ERROR -> j2k_dump: failed to set the decoded area\n");
- opj_stream_destroy(cio);
- opj_destroy_codec(dinfo);
- fclose(fsrc);
- fclose(fout);
- return EXIT_FAILURE;
- }
-
- while (l_go_on) {
- OPJ_INT32 l_current_tile_x0,l_current_tile_y0,l_current_tile_x1,l_current_tile_y1;
- OPJ_UINT32 l_nb_comps, l_tile_index, l_data_size;
-
-
- if (! opj_read_tile_header( dinfo,
- cio,
- &l_tile_index,
- &l_data_size,
- &l_current_tile_x0,
- &l_current_tile_y0,
- &l_current_tile_x1,
- &l_current_tile_y1,
- &l_nb_comps,
- &l_go_on
- )) {
- fprintf(stderr, "ERROR -> j2k_dump: failed read the tile header\n");
- opj_stream_destroy(cio);
- fclose(fsrc);
- opj_destroy_codec(dinfo);
- return EXIT_FAILURE;
- }
-
- if (l_go_on) {
-
- if (l_data_size > l_max_data_size) {
-
- l_data = (OPJ_BYTE *) realloc(l_data,l_data_size);
- if (! l_data) {
- opj_stream_destroy(cio);
- opj_destroy_codec(dinfo);
- fclose(fsrc);
- fclose(fout);
- return EXIT_FAILURE;
- }
-
- l_max_data_size = l_data_size;
- }
-
- if (! opj_decode_tile_data(dinfo,l_tile_index,l_data,l_data_size,cio))
- {
- free(l_data);
- opj_stream_destroy(cio);
- opj_destroy_codec(dinfo);
- fclose(fsrc);
- fclose(fout);
- return EXIT_FAILURE;
- }
- /** now should inspect image to know the reduction factor and then how to behave with data */
- }
- }
- /* FIXME WIP_MSD >*/
-#endif
-
/* close the byte stream */
opj_stream_destroy(cio);
fclose(fsrc);
OPJ_UINT32 opj_stream_read_data (opj_stream_private_t * p_stream,OPJ_BYTE * p_buffer, OPJ_UINT32 p_size, opj_event_mgr_t * p_event_mgr)
{
OPJ_UINT32 l_read_nb_bytes = 0;
- if
- (p_stream->m_bytes_in_buffer >= p_size)
- {
+ if (p_stream->m_bytes_in_buffer >= p_size) {
memcpy(p_buffer,p_stream->m_current_data,p_size);
p_stream->m_current_data += p_size;
p_stream->m_bytes_in_buffer -= p_size;
return l_read_nb_bytes;
}
- // we are now in the case when the remaining data if not sufficient
- if
- (p_stream->m_status & opj_stream_e_end)
- {
+ /* we are now in the case when the remaining data if not sufficient */
+ if (p_stream->m_status & opj_stream_e_end) {
l_read_nb_bytes += p_stream->m_bytes_in_buffer;
memcpy(p_buffer,p_stream->m_current_data,p_stream->m_bytes_in_buffer);
p_stream->m_current_data += p_stream->m_bytes_in_buffer;
return l_read_nb_bytes ? l_read_nb_bytes : -1;
}
- // the flag is not set, we copy data and then do an actual read on the stream
- if
- (p_stream->m_bytes_in_buffer)
- {
+ /* the flag is not set, we copy data and then do an actual read on the stream */
+ if (p_stream->m_bytes_in_buffer) {
l_read_nb_bytes += p_stream->m_bytes_in_buffer;
memcpy(p_buffer,p_stream->m_current_data,p_stream->m_bytes_in_buffer);
p_stream->m_current_data = p_stream->m_stored_data;
p_stream->m_byte_offset += p_stream->m_bytes_in_buffer;
p_stream->m_bytes_in_buffer = 0;
}
- else
- {
+ else {
/* case where we are already at the end of the buffer
so reset the m_current_data to point to the start of the
stored buffer to get ready to read from disk*/
- p_stream->m_current_data = p_stream->m_stored_data;
- }
+ p_stream->m_current_data = p_stream->m_stored_data;
+ }
while(1){
- // we should read less than a chunk -> read a chunk
- if
- (p_size < p_stream->m_buffer_size)
- {
- // we should do an actual read on the media
+ /* we should read less than a chunk -> read a chunk */
+ if (p_size < p_stream->m_buffer_size) {
+ /* we should do an actual read on the media */
p_stream->m_bytes_in_buffer = p_stream->m_read_fn(p_stream->m_stored_data,p_stream->m_buffer_size,p_stream->m_user_data);
- if
- (p_stream->m_bytes_in_buffer == -1)
- {
- // end of stream
+
+ if (p_stream->m_bytes_in_buffer == -1) {
+ /* end of stream */
opj_event_msg_v2(p_event_mgr, EVT_INFO, "Stream reached its end !\n");
p_stream->m_bytes_in_buffer = 0;
p_stream->m_status |= opj_stream_e_end;
- // end of stream
+ /* end of stream */
return l_read_nb_bytes ? l_read_nb_bytes : -1;
}
- else if
- (p_stream->m_bytes_in_buffer < p_size)
- {
- // not enough data
+ else if (p_stream->m_bytes_in_buffer < p_size) {
+ /* not enough data */
l_read_nb_bytes += p_stream->m_bytes_in_buffer;
memcpy(p_buffer,p_stream->m_current_data,p_stream->m_bytes_in_buffer);
p_stream->m_current_data = p_stream->m_stored_data;
p_stream->m_byte_offset += p_stream->m_bytes_in_buffer;
p_stream->m_bytes_in_buffer = 0;
}
- else
- {
+ else {
l_read_nb_bytes += p_size;
memcpy(p_buffer,p_stream->m_current_data,p_size);
p_stream->m_current_data += p_size;
return l_read_nb_bytes;
}
}
- else
- {
- // direct read on the dest buffer
+ else {
+ /* direct read on the dest buffer */
p_stream->m_bytes_in_buffer = p_stream->m_read_fn(p_buffer,p_size,p_stream->m_user_data);
- if
- (p_stream->m_bytes_in_buffer == -1)
- {
- // end of stream
+
+ if (p_stream->m_bytes_in_buffer == -1) {
+ /* end of stream */
opj_event_msg_v2(p_event_mgr, EVT_INFO, "Stream reached its end !\n");
p_stream->m_bytes_in_buffer = 0;
p_stream->m_status |= opj_stream_e_end;
- // end of stream
+ /* end of stream */
return l_read_nb_bytes ? l_read_nb_bytes : -1;
}
- else if
- (p_stream->m_bytes_in_buffer < p_size)
- {
- // not enough data
+ else if (p_stream->m_bytes_in_buffer < p_size) {
+ /* not enough data */
l_read_nb_bytes += p_stream->m_bytes_in_buffer;
p_stream->m_current_data = p_stream->m_stored_data;
p_buffer += p_stream->m_bytes_in_buffer;
p_stream->m_byte_offset += p_stream->m_bytes_in_buffer;
p_stream->m_bytes_in_buffer = 0;
}
- else
- {
- // we have read the exact size
+ else {
+ /* we have read the exact size */
l_read_nb_bytes += p_stream->m_bytes_in_buffer;
p_stream->m_byte_offset += p_stream->m_bytes_in_buffer;
p_stream->m_current_data = p_stream->m_stored_data;
{
p_stream->m_current_data = p_stream->m_stored_data;
p_stream->m_bytes_in_buffer = 0;
- if
- (! p_stream->m_seek_fn(p_size,p_stream->m_user_data))
- {
+
+ if( p_stream->m_seek_fn(p_size,p_stream->m_user_data)) {
p_stream->m_status |= opj_stream_e_end;
return EXIT_FAILURE;
}
- else
- {
+ else {
// reset stream status
p_stream->m_status &= (~opj_stream_e_end);
p_stream->m_byte_offset = p_size;
}
+
return EXIT_SUCCESS;
}
p_j2k->m_specific_param.m_decoder.m_state = J2K_STATE_TPH;
- /* Check if the current tile is outside the area we want decode (in tile index)*/
- p_j2k->m_specific_param.m_decoder.m_skip_data =
- (l_tile_x < p_j2k->m_specific_param.m_decoder.m_start_tile_x)
- || (l_tile_x >= p_j2k->m_specific_param.m_decoder.m_end_tile_x)
- || (l_tile_y < p_j2k->m_specific_param.m_decoder.m_start_tile_y)
- || (l_tile_y >= p_j2k->m_specific_param.m_decoder.m_end_tile_y);
+ /* Check if the current tile is outside the area we want decode or not corresponding to the tile index*/
+ if (p_j2k->m_specific_param.m_decoder.m_tile_ind_to_dec == -1) {
+ p_j2k->m_specific_param.m_decoder.m_skip_data =
+ (l_tile_x < p_j2k->m_specific_param.m_decoder.m_start_tile_x)
+ || (l_tile_x >= p_j2k->m_specific_param.m_decoder.m_end_tile_x)
+ || (l_tile_y < p_j2k->m_specific_param.m_decoder.m_start_tile_y)
+ || (l_tile_y >= p_j2k->m_specific_param.m_decoder.m_end_tile_y);
+ }
+ else
+ p_j2k->m_specific_param.m_decoder.m_skip_data =
+ (p_j2k->m_current_tile_number != p_j2k->m_specific_param.m_decoder.m_tile_ind_to_dec);
/* Index */
if (p_j2k->cstr_index)
return OPJ_FALSE;
}
-/* if (l_current_marker == J2K_MS_SOT)
- j2k_add_tlmarker();*/
-
/* Add the marker to the codestream index*/
j2k_add_tlmarker_v2(p_j2k->m_current_tile_number,
p_j2k->cstr_index,
(OPJ_UINT32) opj_stream_tell(p_stream) - l_marker_size - 4,
l_marker_size + 4 );
+ /* Keep the position of the last SOT marker read */
+ if ( l_marker_handler->id == J2K_MS_SOT ) {
+ OPJ_UINT32 sot_pos = (OPJ_UINT32) opj_stream_tell(p_stream) - l_marker_size - 4 ;
+ if (sot_pos > p_j2k->m_specific_param.m_decoder.m_last_sot_read_pos)
+ {
+ p_j2k->m_specific_param.m_decoder.m_last_sot_read_pos = sot_pos;
+ }
+ }
+
+
if (p_j2k->m_specific_param.m_decoder.m_skip_data) {
/* Skip the rest of the tile part header*/
if (opj_stream_skip(p_stream,p_j2k->m_specific_param.m_decoder.m_sot_length,p_manager) != p_j2k->m_specific_param.m_decoder.m_sot_length) {
}
opj_event_msg_v2(p_manager, EVT_INFO, "Header of tile %d / %d has been read.\n",
- p_j2k->m_current_tile_number +1, p_j2k->m_cp.th * p_j2k->m_cp.tw);
+ p_j2k->m_current_tile_number, (p_j2k->m_cp.th * p_j2k->m_cp.tw) - 1);
*p_tile_index = p_j2k->m_current_tile_number;
*p_go_on = OPJ_TRUE;
/* Move the output buffer to the first place where we will write*/
l_dest_ptr = l_img_comp_dest->data + l_start_offset_dest;
- if (i == 0) {
+ /*if (i == 0) {
fprintf(stdout, "COMPO[%d]:\n",i);
fprintf(stdout, "SRC: l_start_x_src=%d, l_start_y_src=%d, l_width_src=%d, l_height_src=%d\n"
"\t tile offset:%d, %d, %d, %d\n"
fprintf(stdout, "DEST: l_start_x_dest=%d, l_start_y_dest=%d, l_width_dest=%d, l_height_dest=%d\n"
"\t start offset: %d, line offset= %d\n",
l_start_x_dest, l_start_y_dest, l_width_dest, l_height_dest, l_start_offset_dest, l_line_offset_dest);
- }
+ }*/
switch (l_size_comp) {
l_j2k->m_specific_param.m_decoder.m_header_data_size = J2K_DEFAULT_HEADER_SIZE;
+ l_j2k->m_specific_param.m_decoder.m_tile_ind_to_dec = -1 ;
+
+ l_j2k->m_specific_param.m_decoder.m_last_sot_read_pos = 0 ;
+
/* codestream index creation */
l_j2k->cstr_index = j2k_create_cstr_index();
}
+/*
+ * Read and decode one tile.
+ */
+opj_bool j2k_decode_one_tile ( opj_j2k_v2_t *p_j2k,
+ opj_stream_private_t *p_stream,
+ opj_event_mgr_t * p_manager)
+{
+ opj_bool l_go_on = OPJ_TRUE;
+ OPJ_UINT32 l_current_tile_no;
+ OPJ_UINT32 l_tile_no_to_dec;
+ OPJ_UINT32 l_data_size,l_max_data_size;
+ OPJ_INT32 l_tile_x0,l_tile_y0,l_tile_x1,l_tile_y1;
+ OPJ_UINT32 l_nb_comps;
+ OPJ_BYTE * l_current_data;
+
+ l_current_data = (OPJ_BYTE*)opj_malloc(1000);
+ if (! l_current_data) {
+ return OPJ_FALSE;
+ }
+ l_max_data_size = 1000;
+
+ /*Allocate and initialize some elements of codestrem index if not already done*/
+ if( !p_j2k->cstr_index->tile_index)
+ {
+ if (!j2k_allocate_tile_element_cstr_index(p_j2k))
+ return OPJ_FALSE;
+ }
+
+ /* Move into the codestream to the first SOT used to decode the desired tile */
+ l_tile_no_to_dec = p_j2k->m_specific_param.m_decoder.m_tile_ind_to_dec;
+ if (p_j2k->cstr_index->tile_index)
+ if(p_j2k->cstr_index->tile_index->tp_index)
+ {
+ if ( ! p_j2k->cstr_index->tile_index[l_tile_no_to_dec].nb_tps) {
+ /* not build the index for this tile, so we will move to the last SOT read*/
+ if ( opj_stream_read_seek(p_stream, p_j2k->m_specific_param.m_decoder.m_last_sot_read_pos+2, p_manager) ){
+ opj_event_msg_v2(p_manager, EVT_ERROR, "Problem with seek function\n");
+ return OPJ_FALSE;
+ }
+ }
+ else{
+ if (opj_stream_read_seek(p_stream, p_j2k->cstr_index->tile_index[l_tile_no_to_dec].tp_index[0].start_pos+2, p_manager)) {
+ opj_event_msg_v2(p_manager, EVT_ERROR, "Problem with seek function\n");
+ return OPJ_FALSE;
+ }
+ }
+ /* Special case if we have previously read the EOC marker (if the previous tile getted is the last ) */
+ if(p_j2k->m_specific_param.m_decoder.m_state == J2K_STATE_EOC)
+ p_j2k->m_specific_param.m_decoder.m_state = J2K_STATE_TPHSOT;
+ }
+
+ while (OPJ_TRUE) {
+ if (! j2k_read_tile_header( p_j2k,
+ &l_current_tile_no,
+ &l_data_size,
+ &l_tile_x0, &l_tile_y0,
+ &l_tile_x1, &l_tile_y1,
+ &l_nb_comps,
+ &l_go_on,
+ p_stream,
+ p_manager)) {
+ opj_free(l_current_data);
+ return OPJ_FALSE;
+ }
+
+
+ if (! l_go_on) {
+ break;
+ }
+
+ if (l_data_size > l_max_data_size) {
+ l_current_data = (OPJ_BYTE*)opj_realloc(l_current_data,l_data_size);
+ if (! l_current_data) {
+ return OPJ_FALSE;
+ }
+
+ l_max_data_size = l_data_size;
+ }
+
+
+
+ if (! j2k_decode_tile(p_j2k,l_current_tile_no,l_current_data,l_data_size,p_stream,p_manager)) {
+ opj_free(l_current_data);
+ return OPJ_FALSE;
+ }
+ opj_event_msg_v2(p_manager, EVT_INFO, "Tile %d/%d has been decode.\n", l_current_tile_no, (p_j2k->m_cp.th * p_j2k->m_cp.tw) - 1);
+
+ if (! j2k_update_image_data(p_j2k->m_tcd,l_current_data, p_j2k->m_output_image)) {
+ opj_free(l_current_data);
+ return OPJ_FALSE;
+ }
+ opj_event_msg_v2(p_manager, EVT_INFO, "Image data has been updated with tile %d.\n\n", l_current_tile_no);
+
+ if(l_current_tile_no == l_tile_no_to_dec)
+ {
+ /* move into the codestream to the the first SOT (FIXME or not move?)*/
+ if (opj_stream_read_seek(p_stream, p_j2k->cstr_index->main_head_end + 2, p_manager) ) {
+ opj_event_msg_v2(p_manager, EVT_ERROR, "Problem with seek function\n");
+ return OPJ_FALSE;
+ }
+ break;
+ }
+ else {
+ opj_event_msg_v2(p_manager, EVT_WARNING, "Tile read, decode and updated is not the desired (%d vs %d).\n", l_current_tile_no, l_tile_no_to_dec);
+ }
+
+ }
+
+ opj_free(l_current_data);
+
+ return OPJ_TRUE;
+}
+
+
+/**
+ * Sets up the procedures to do on decoding one tile. Developpers wanting to extend the library can add their own reading procedures.
+ */
+void j2k_setup_decoding_tile (opj_j2k_v2_t *p_j2k)
+{
+ // preconditions
+ assert(p_j2k != 00);
+
+ opj_procedure_list_add_procedure(p_j2k->m_procedure_list,(void*)j2k_decode_one_tile);
+ /* DEVELOPER CORNER, add your custom procedures */
+
+}
+
/**
* Decodes the tiles of the stream.
return OPJ_TRUE;
}
+
+
+/**
+ * Get the decoded tile.
+ *
+ * @param p_j2k the jpeg2000 codestream codec.
+ * @param p_stream input_stream
+ * @param p_image output image. .
+ * @param p_manager the user event manager
+ * @param tile_index index of the tile we want decode
+ *
+ * @return true if succeed.
+ */
+opj_bool j2k_get_tile( opj_j2k_v2_t *p_j2k,
+ opj_stream_private_t *p_stream,
+ opj_image_t* p_image,
+ struct opj_event_mgr * p_manager,
+ OPJ_UINT32 tile_index )
+{
+ OPJ_UINT32 compno;
+ OPJ_UINT32 l_tile_x, l_tile_y;
+ opj_image_comp_t* l_img_comp;
+
+ if (!p_image) {
+ opj_event_msg_v2(p_manager, EVT_ERROR, "We need a image previously created.\n");
+ 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;
+
+ p_image->x0 = l_tile_x * p_j2k->m_cp.tdx + p_j2k->m_cp.tx0;
+ p_image->x1 = (l_tile_x + 1) * p_j2k->m_cp.tdx + p_j2k->m_cp.tx0;
+ p_image->y0 = l_tile_y * p_j2k->m_cp.tdy + p_j2k->m_cp.ty0;
+ p_image->y1 = (l_tile_y + 1) * p_j2k->m_cp.tdy + p_j2k->m_cp.ty0;
+
+ l_img_comp = p_image->comps;
+ for (compno=0; compno < p_image->numcomps; ++compno)
+ {
+ OPJ_INT32 l_comp_x1, l_comp_y1;
+
+ l_img_comp->x0 = int_ceildiv(p_image->x0, l_img_comp->dx);
+ l_img_comp->y0 = int_ceildiv(p_image->y0, l_img_comp->dy);
+ l_comp_x1 = int_ceildiv(p_image->x1, l_img_comp->dx);
+ l_comp_y1 = int_ceildiv(p_image->y1, l_img_comp->dy);
+
+ l_img_comp->w = int_ceildivpow2(l_comp_x1 - l_img_comp->x0, l_img_comp->factor);
+ l_img_comp->h = int_ceildivpow2(l_comp_y1 - l_img_comp->y0, l_img_comp->factor);
+
+ l_img_comp++;
+ }
+
+ /* Destroy the previous output image*/
+ if (p_j2k->m_output_image)
+ opj_image_destroy(p_j2k->m_output_image);
+
+ /* Create the ouput image from the information previously computed*/
+ p_j2k->m_output_image = opj_image_create0();
+ if (! (p_j2k->m_output_image)) {
+ return OPJ_FALSE;
+ }
+ opj_copy_image_header(p_image, p_j2k->m_output_image);
+
+ if ( (tile_index < 0) && (tile_index >= p_j2k->m_cp.tw * p_j2k->m_cp.th) ){
+ opj_event_msg_v2(p_manager, EVT_ERROR, "Tile index provided by the user is incorrect %d (max = %d) \n", tile_index, (p_j2k->m_cp.tw * p_j2k->m_cp.th) - 1);
+ return OPJ_FALSE;
+ }
+
+ p_j2k->m_specific_param.m_decoder.m_tile_ind_to_dec = tile_index;
+
+ /* customization of the decoding */
+ j2k_setup_decoding_tile(p_j2k);
+
+ /* Decode the codestream */
+ if (! j2k_exec (p_j2k,p_j2k->m_procedure_list,p_stream,p_manager)) {
+ opj_image_destroy(p_j2k->m_private_image);
+ p_j2k->m_private_image = NULL;
+ return OPJ_FALSE;
+ }
+
+ /* Move data and copy one information from codec to output image*/
+ for (compno = 0; compno < p_image->numcomps; compno++) {
+ p_image->comps[compno].resno_decoded = p_j2k->m_output_image->comps[compno].resno_decoded;
+
+ if (p_image->comps[compno].data)
+ opj_free(p_image->comps[compno].data);
+
+ p_image->comps[compno].data = p_j2k->m_output_image->comps[compno].data;
+
+ p_j2k->m_output_image->comps[compno].data = NULL;
+ }
+
+ return OPJ_TRUE;
+}
OPJ_UINT32 m_DA_y0;
OPJ_UINT32 m_DA_x1;
OPJ_UINT32 m_DA_y1;
+
+ /** Index of the tile to decode (used in get_tile) */
+ OPJ_INT32 m_tile_ind_to_dec;
+ /** Position of the last SOT marker read */
+ OPJ_UINT32 m_last_sot_read_pos;
+
/**
* Indicate that the current tile-part is assume as the last tile part of the codestream.
* It is useful in the case of PSot is equal to zero. The sot length will be compute in the
opj_bool j2k_decode_v2(opj_j2k_v2_t *j2k, struct opj_stream_private *cio, opj_image_t* p_image, opj_event_mgr_t * p_manager);
+opj_bool j2k_get_tile( opj_j2k_v2_t *p_j2k,
+ opj_stream_private_t *p_stream,
+ opj_image_t* p_image,
+ struct opj_event_mgr * p_manager,
+ OPJ_UINT32 tile_index );
+
+
#endif /* __J2K_H */
return j2k_set_decode_area(p_jp2->j2k, p_image, p_start_x, p_start_y, p_end_x, p_end_y, p_manager);
}
+/**
+ * Get the decoded tile.
+ *
+ * @param p_jp2 the jpeg2000 codec.
+ * @param p_stream input_stream
+ * @param p_image output image. .
+ * @param p_manager the user event manager
+ * @param tile_index index of the tile we want decode
+ *
+ * @return true if succeed.
+ */
+opj_bool jp2_get_tile( opj_jp2_v2_t *jp2,
+ opj_stream_private_t *p_stream,
+ opj_image_t* p_image,
+ struct opj_event_mgr * p_manager,
+ OPJ_UINT32 tile_index )
+{
+ if (!p_image)
+ return OPJ_FALSE;
+
+ opj_event_msg_v2(p_manager, EVT_WARNING, "JP2 box which are after the codestream will not be read by this function.\n");
+
+ if (! j2k_get_tile(jp2->j2k, p_stream, p_image, p_manager, tile_index) ){
+ opj_event_msg_v2(p_manager, EVT_ERROR, "Failed to decode the codestream in the JP2 file\n");
+ return OPJ_FALSE;
+ }
+
+ /* Set Image Color Space */
+ if (jp2->enumcs == 16)
+ p_image->color_space = CLRSPC_SRGB;
+ else if (jp2->enumcs == 17)
+ p_image->color_space = CLRSPC_GRAY;
+ else if (jp2->enumcs == 18)
+ p_image->color_space = CLRSPC_SYCC;
+ else
+ p_image->color_space = CLRSPC_UNKNOWN;
+
+ /* Apply the color space if needed */
+ if(jp2->color.jp2_cdef) {
+ jp2_apply_cdef(p_image, &(jp2->color));
+ }
+
+ if(jp2->color.jp2_pclr) {
+ /* Part 1, I.5.3.4: Either both or none : */
+ if( !jp2->color.jp2_pclr->cmap)
+ jp2_free_pclr(&(jp2->color));
+ else
+ jp2_apply_pclr(p_image, &(jp2->color));
+ }
+
+ if(jp2->color.icc_profile_buf) {
+ p_image->icc_profile_buf = jp2->color.icc_profile_buf;
+ p_image->icc_profile_len = jp2->color.icc_profile_len;
+ jp2->color.icc_profile_buf = NULL;
+ }
+
+ return OPJ_TRUE;
+}
+
+
+
/* ----------------------------------------------------------------------- */
/* JP2 encoder interface */
/* ----------------------------------------------------------------------- */
OPJ_INT32 p_end_x, OPJ_INT32 p_end_y,
struct opj_event_mgr * p_manager );
+opj_bool jp2_get_tile( opj_jp2_v2_t *p_jp2,
+ opj_stream_private_t *p_stream,
+ opj_image_t* p_image,
+ struct opj_event_mgr * p_manager,
+ OPJ_UINT32 tile_index );
+
/**
* Dump some elements from the JP2 decompression structure .
OPJ_INT32 p_start_x, OPJ_INT32 p_end_x,
OPJ_INT32 p_start_y, OPJ_INT32 p_end_y,
struct opj_event_mgr * p_manager);
+
+ /** Get tile function */
+ opj_bool (*opj_get_decoded_tile) ( void *p_codec,
+ opj_stream_private_t *p_cio,
+ opj_image_t *p_image,
+ struct opj_event_mgr * p_manager,
+ OPJ_UINT32 tile_index);
}opj_decompression_t;
/**
l_info->m_codec_data.m_decompression.opj_set_decode_area =
(opj_bool (*) (void *, opj_image_t*, OPJ_INT32, OPJ_INT32, OPJ_INT32, OPJ_INT32, struct opj_event_mgr *)) j2k_set_decode_area;
+ l_info->m_codec_data.m_decompression.opj_get_decoded_tile = (opj_bool (*) ( void *p_codec,
+ opj_stream_private_t *p_cio,
+ opj_image_t *p_image,
+ struct opj_event_mgr * p_manager,
+ OPJ_UINT32 tile_index)) j2k_get_tile;
+
l_info->m_codec = j2k_create_decompress_v2();
if (! l_info->m_codec) {
l_info->m_codec_data.m_decompression.opj_set_decode_area = (opj_bool (*) (void *,opj_image_t*, OPJ_INT32,OPJ_INT32,OPJ_INT32,OPJ_INT32, struct opj_event_mgr * )) jp2_set_decode_area;
+ l_info->m_codec_data.m_decompression.opj_get_decoded_tile = (opj_bool (*) ( void *p_codec,
+ opj_stream_private_t *p_cio,
+ opj_image_t *p_image,
+ struct opj_event_mgr * p_manager,
+ OPJ_UINT32 tile_index)) jp2_get_tile;
+
l_info->m_codec = jp2_create(OPJ_TRUE);
if (! l_info->m_codec) {
return OPJ_FALSE;
}
+/*
+ *
+ *
+ */
opj_bool OPJ_CALLCONV opj_end_decompress (opj_codec_t *p_codec,opj_stream_t *p_cio)
{
if (p_codec && p_cio) {
return OPJ_FALSE;
}
+
+/*
+ *
+ *
+ */
+opj_bool OPJ_CALLCONV opj_get_decoded_tile( opj_codec_t *p_codec,
+ opj_stream_t *p_cio,
+ opj_image_t *p_image,
+ OPJ_UINT32 tile_index)
+{
+ if (p_codec && p_cio) {
+ opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
+ opj_stream_private_t * l_stream = (opj_stream_private_t *) p_cio;
+
+ if (! l_codec->is_decompressor) {
+ return OPJ_FALSE;
+ }
+ return l_codec->m_codec_data.m_decompression.opj_get_decoded_tile( l_codec->m_codec,
+ l_stream,
+ p_image,
+ l_codec->m_event_mgr,
+ tile_index);
+ }
+
+ return OPJ_FALSE;
+}
opj_image_t *p_image);
+/**
+ * Get the decoded tile from the codec
+ * @param p_codec the jpeg2000 codec.
+ * @param p_cio input streamm
+ * @param p_image output image
+ * @param tile_index index of the tile which will be decode
+ *
+ * @return a pointer to a JP2 index structure.
+ */
+OPJ_API opj_bool OPJ_CALLCONV opj_get_decoded_tile( opj_codec_t *p_codec,
+ opj_stream_t *p_cio,
+ opj_image_t *p_image,
+ OPJ_UINT32 tile_index);
/**
* Reads a tile header. This function is compulsory and allows one to know the size of the tile thta will be decoded.
+
+
#ifdef __cplusplus
}
#endif
projects / openjpeg.git / commitdiff