player.c

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#include <cfg/os.h>
#include <cfg/clock.h>
#include <dev/board.h>
#include <sys/timer.h>
#include <sys/event.h>

#include <stdlib.h>
#include <string.h>

#include <stdio.h>

#include "tlv320dac.h"
#include "receiver.h"
#include "mp3player.h"

PLAYERINFO * PlayerCreate(PLAYERPLUGIN *plugin)
{
    PLAYERINFO *pip;

    /* Allocate and initialize the player info structure. */
    if ((pip = malloc(sizeof(PLAYERINFO))) != NULL) {
        memset(pip, 0, sizeof(PLAYERINFO));
        /* Associate a new player plug-in instance. */
        if ((*plugin->pp_create) (pip)) {
            free(pip);
            pip = NULL;
        }
    }
    return pip;
}

static int PlayerPlugInControl(PLAYERINFO *pip, u_int sst, u_int xst)
{
    int retries = 10;

    /* Loop until we got the status or give up on too many retires. */
    while (pip->pi_status != xst) {
        pip->pi_status = sst;
        NutEventPost(&pip->pi_cmdevt);
        if (NutEventWait(&pip->pi_stsevt, 500)) {
            if (retries-- <= 0) {
                printf("No player control\n");
                return -1;
            }
        }
    }
    return 0;
}

u_int PlayerStatus(PLAYERINFO *pip)
{
    return pip->pi_status;
}

int PlayerStop(PLAYERINFO *pip)
{
    printf("[PSTOP]");
    return PlayerPlugInControl(pip, PSTAT_STOP, PSTAT_IDLE);
}

int PlayerStart(PLAYERINFO *pip, RECEIVERINFO *rip)
{
    if (PlayerStop(pip)) {
        return -1;
    }
    printf("[PSTART]");
    pip->pi_rcvr = rip;

    return PlayerPlugInControl(pip, PSTAT_START, PSTAT_RUNNING);
}

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