/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2013-2019 Winlin
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef SRS_PROTOCOL_MESSAGE_ARRAY_HPP
#define SRS_PROTOCOL_MESSAGE_ARRAY_HPP

#include <srs_core.hpp>

class SrsSharedPtrMessage;

/**
 * the class to auto free the shared ptr message array.
 * when need to get some messages, for instance, from Consumer queue,
 * create a message array, whose msgs can used to accept the msgs,
 * then send each message and set to NULL.
 *
 * @remark: user must free all msgs in array, for the SRS2.0 protocol stack
 *       provides an api to send messages, @see send_and_free_messages
 */
class SrsMessageArray
{
public:
    /**
     * when user already send all msgs, please set to NULL,
     * for instance, msg= msgs.msgs[i], msgs.msgs[i]=NULL, send(msg),
     * where send(msg) will always send and free it.
     */
    SrsSharedPtrMessage** msgs;
    int max;
public:
    /**
     * create msg array, initialize array to NULL ptrs.
     */
    SrsMessageArray(int max_msgs);
    /**
     * free the msgs not sent out(not NULL).
     */
    virtual ~SrsMessageArray();
public:
    /**
     * free specified count of messages.
     */
    virtual void free(int count);
private:
    /**
     * zero initialize the message array.
     */
    virtual void zero(int count);
};

#endif