player.h

qt91上实现的mp3播放机,支持sam9260,参考用

#ifndef _PLAYER_H_
#define _PLAYER_H_

/*
 * Copyright (C) 2003-2007 by egnite Software GmbH. 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. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
 * SOFTWARE GMBH OR CONTRIBUTORS 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.
 *
 * For additional information see http://www.ethernut.de/
 */

/*!
 * \file mp3player.h
 * \brief MP3 Player.
 *
 * \verbatim
 *
 * $Log$
 *
 * \endverbatim
 */

#include <sys/socket.h>
#include <hxmp3/mp3dec.h>
#include <hxmp3/hermite.h>
#include "receiver.h"

#define PSTAT_IDLE      0
#define PSTAT_START     1
#define PSTAT_RUNNING   2
#define PSTAT_STOP      3

/*! \name Player Types */
/*@{*/
/*! \brief Player accepts MP3 encoded audio data. */
#define PLAYER_TYPE_MP3     1
/*@}*/

/*!
 * \brief Player information structure type.
 */
typedef struct _PLAYERINFO PLAYERINFO;;

/*!
 * \brief Player plug-in reference structure.
 *
 * A variable with this structure is provided by the plug-in.
 */
typedef struct _PLAYERPLUGIN {
    int (*pp_create) (PLAYERINFO * pip);
    int (*pp_setup) (PLAYERINFO * pip);
} PLAYERPLUGIN;

/*!
 * \brief Player information structure.
 *
 * An instance of this structure is created when calling PlayerCreate().
 */
struct _PLAYERINFO {
    /*! \brief Current status of the player.
     *
     * - \ref PSTAT_IDLE if stopped.
     * - \ref PSTAT_START if currently starting.
     * - \ref PSTAT_RUNNING if started.
     * - \ref PSTAT_STOP if currently stopping.
     */     
    u_int  pi_status;
    /*! \brief Player plug-in command event queue.
     *
     * An event is posted to this queue whenever a status change is requested.
     */
    HANDLE pi_cmdevt;
    /*! \brief Player plug-in status event queue.
     *
     * An event is posted by the player plug-in to this queue whenever a 
     * status change took place.
     */
    HANDLE pi_stsevt;
    short pi_pcmbuf[MAX_NCHAN * MAX_NGRAN * MAX_NSAMP];
    RECEIVERINFO *pi_rcvr;
    /*! \brief Pointer to the plug-in reference structure.
     */
    PLAYERPLUGIN *pi_ppp;
    /*! \brief Player plug-in local data.
     *
     * Can be used by the player plug-in to store local data.
     */
    void *pi_bcast;
};

__BEGIN_DECLS
/* Prototypes */

extern PLAYERINFO * PlayerCreate(PLAYERPLUGIN *ppp);
extern int PlayerStart(PLAYERINFO *pip, RECEIVERINFO *rip);
extern int PlayerStop(PLAYERINFO *pip);
extern u_int PlayerStatus(PLAYERINFO *pip);

__END_DECLS
/* End of prototypes */
#endif