src/apps/cortex/RouteApp/route_app_io.h

root/src/apps/cortex/RouteApp/route_app_io.h
/*
 * Copyright (c) 1999-2000, Eric Moon.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions, and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


// route_app_io.h
// * PURPOSE
//   Central definitions of constants used to import/export
//   XML-formatted data in Cortex.
//
// * HISTORY
//   e.moon             8dec99          Begun

#ifndef __route_app_io_h__
#define __route_app_io_h__

#include "ImportContext.h"
#include "ExportContext.h"
#include "XML.h"

#include <MediaDefs.h>
#include <String.h>

#include "cortex_defs.h"
__BEGIN_CORTEX_NAMESPACE

class NodeManager;
class NodeSetIOContext;

// IPersistent elements
extern const char* const _DORMANT_NODE_ELEMENT;
extern const char* const _LIVE_NODE_ELEMENT;
extern const char* const _CONNECTION_ELEMENT;

extern const char* const _NODE_GROUP_ELEMENT;

// simple string-content elements
extern const char* const _NAME_ELEMENT;
extern const char* const _FLAG_ELEMENT;
extern const char* const _KIND_ELEMENT;
extern const char* const _FLAVOR_ID_ELEMENT;
extern const char* const _CYCLE_ELEMENT;
extern const char* const _RUN_MODE_ELEMENT;
extern const char* const _TIME_SOURCE_ELEMENT;
extern const char* const _RECORDING_DELAY_ELEMENT;
extern const char* const _REF_ELEMENT;

// intermediate elements
extern const char* const _OUTPUT_ELEMENT;
extern const char* const _INPUT_ELEMENT;
extern const char* const _NODE_SET_ELEMENT;
extern const char* const _UI_STATE_ELEMENT;

// system-defined node keys
extern const char* const _AUDIO_INPUT_KEY;
extern const char* const _AUDIO_OUTPUT_KEY;
extern const char* const _AUDIO_MIXER_KEY;
extern const char* const _VIDEO_INPUT_KEY;
extern const char* const _VIDEO_OUTPUT_KEY;

// helper functions

void _write_simple(
        const char* element,
        const char* value,
        ExportContext& context);

void _write_node_kinds(
        int64 kinds,
        ExportContext& context);

void _read_node_kind(
        int64& ioKind,
        const char* data,
        ImportContext& context);
        
// fills in either key or outName/kind for the provided
// node.  If the given node is one of the default system nodes,
// an appropriate 'preset' key value will be returned.

status_t _get_node_signature(
        const NodeManager*                      manager,
        const NodeSetIOContext* context,
        media_node_id                                           node,
        BString&                                                                outKey,
        BString&                                                                outName,
        int64&                                                                  outKind);
        
// given a name and kind, looks for a matching node

status_t _match_node_signature(
        const char*                                                     name,
        int64                                                                           kind,
        media_node_id*                                  outNode);

// given a key, looks for a system-default node

status_t _match_system_node_key(
        const char*                                                     key,
        const NodeManager*                      manager,
        media_node_id*                                  outNode);

// adds mappings for the simple string-content elements to the
// given document type

void _add_string_elements(
        XML::DocumentType*                      docType);

__END_CORTEX_NAMESPACE
#endif /*__route_app_io_h__*/
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