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src/Source/LibOpenJPEG/jp2.c  view on Meta::CPAN

		memset(jp2,0,sizeof(opj_jp2_t));

		/* create the J2K codec */
		if (! p_is_decoder) {
			jp2->j2k = opj_j2k_create_compress();
		}
		else {
			jp2->j2k = opj_j2k_create_decompress();
		}

		if (jp2->j2k == 00) {
			opj_jp2_destroy(jp2);
			return 00;
		}

		/* Color structure */
		jp2->color.icc_profile_buf = NULL;
		jp2->color.icc_profile_len = 0;
		jp2->color.jp2_cdef = NULL;
		jp2->color.jp2_pclr = NULL;
		jp2->color.jp2_has_colr = 0;

		/* validation list creation */
		jp2->m_validation_list = opj_procedure_list_create();
		if (! jp2->m_validation_list) {
			opj_jp2_destroy(jp2);
			return 00;
		}

		/* execution list creation */
		jp2->m_procedure_list = opj_procedure_list_create();
		if (! jp2->m_procedure_list) {
			opj_jp2_destroy(jp2);
			return 00;
		}
	}

	return jp2;
}

void jp2_dump(opj_jp2_t* p_jp2, OPJ_INT32 flag, FILE* out_stream)
{
	/* preconditions */
	assert(p_jp2 != 00);

	j2k_dump(p_jp2->j2k,
					flag,
					out_stream);
}

opj_codestream_index_t* jp2_get_cstr_index(opj_jp2_t* p_jp2)
{
	return j2k_get_cstr_index(p_jp2->j2k);
}

opj_codestream_info_v2_t* jp2_get_cstr_info(opj_jp2_t* p_jp2)
{
	return j2k_get_cstr_info(p_jp2->j2k);
}

OPJ_BOOL opj_jp2_set_decoded_resolution_factor(opj_jp2_t *p_jp2,
                                               OPJ_UINT32 res_factor,
                                               opj_event_mgr_t * p_manager)
{
	return opj_j2k_set_decoded_resolution_factor(p_jp2->j2k, res_factor, p_manager);
}

/* JPIP specific */

#ifdef USE_JPIP
static OPJ_BOOL opj_jpip_write_iptr(opj_jp2_t *jp2,
  opj_stream_private_t *cio,
  opj_event_mgr_t * p_manager )
{
  OPJ_OFF_T j2k_codestream_exit;
  OPJ_BYTE l_data_header [24];

  /* preconditions */
  assert(jp2 != 00);
  assert(cio != 00);
  assert(p_manager != 00);
  assert(opj_stream_has_seek(cio));

  j2k_codestream_exit = opj_stream_tell(cio);
  opj_write_bytes(l_data_header, 24, 4); /* size of iptr */
  opj_write_bytes(l_data_header + 4,JPIP_IPTR,4);									   /* IPTR */
#if 0
  opj_write_bytes(l_data_header + 4 + 4, 0, 8); /* offset */
  opj_write_bytes(l_data_header + 8 + 8, 0, 8); /* length */
#else
  opj_write_double(l_data_header + 4 + 4, 0); /* offset */
  opj_write_double(l_data_header + 8 + 8, 0); /* length */
#endif

  if (! opj_stream_seek(cio,jp2->jpip_iptr_offset,p_manager)) {
    opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
    return OPJ_FALSE;
  }

  if (opj_stream_write_data(cio,l_data_header,24,p_manager) != 24) {
    opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
    return OPJ_FALSE;
  }

  if (! opj_stream_seek(cio,j2k_codestream_exit,p_manager)) {
    opj_event_msg(p_manager, EVT_ERROR, "Failed to seek in the stream.\n");
    return OPJ_FALSE;
  }

  return OPJ_TRUE;
}

static OPJ_BOOL opj_jpip_write_fidx(opj_jp2_t *jp2,
  opj_stream_private_t *cio,
  opj_event_mgr_t * p_manager )
{
  OPJ_OFF_T j2k_codestream_exit;
  OPJ_BYTE l_data_header [24];

  /* preconditions */
  assert(jp2 != 00);
  assert(cio != 00);
  assert(p_manager != 00);
  assert(opj_stream_has_seek(cio));