favlist.c

Internet Radio Internet Radio Internet Radio Internet Radio Internet Radio

/*!
 * Copyright (C) 2006-2007 by egnite Software GmbH. All rights reserved.
 * Copyright (C) 2008 by egnite 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 THE COPYRIGHT HOLDERS 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 THE
 * COPYRIGHT OWNER 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 config.c
 * \brief Radio configuration.
 *
 * \verbatim
 *
 * $Log$
 *
 * \endverbatim
 */

#include <cfg/os.h>
#include <cfg/clock.h>
#include <dev/board.h>
#include <dev/at45db.h>
#include <dev/at91_spi.h>

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <io.h>

#include <sys/version.h>
#include <sys/confnet.h>
#include <sys/atom.h>
#include <sys/heap.h>
#include <sys/thread.h>
#include <sys/timer.h>
#include <sys/event.h>
#include <sys/socket.h>

#if defined(USE_SOFTWARE_CODEC)
#include <hxmp3/mp3dec.h>
#endif

#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <net/route.h>
#include <pro/dhcp.h>

#include "config.h"
#include "logmsg.h"
#include "favlist.h"
#include "webradio.h"

#define FAVLIST_MAGIC   "FL1"
#define FAVLIST_SECTOR  16


RADIOSTATION favlist[MAX_FAVORITES];

/*!
 * \brief Clear favorites list.
 *
 * Will be called by FavListLoad() before loading a new list.
 */
static void FavListClear(void)
{
    int idx;
    int i;

    /* Release all memory occupied by the current configuration. */
    for (idx = 0; idx < MAX_FAVORITES; idx++) {
        if (favlist[idx].rs_name) {
            free(favlist[idx].rs_name);
        }
        for (i = 0; i < favlist[idx].rs_streams; i++) {
            if (favlist[idx].rs_uri[i]) {
                free(favlist[idx].rs_uri[i]);
            }
        }
    }
    memset(favlist, 0, MAX_FAVORITES * sizeof(RADIOSTATION));
}

/*!
 * \brief Set favorite list entry.
 *
 * \param idx  Index of the entry. Use MAX_FAVORITES to add a new entry.
 * \param name Name of the station. Must be provided, if a new station
 *             is added. May be NULL when adding a URI. When used with
 *             an existing entry, the current name will be replaced.
 * \param uri  URI of the stream, that will be added. If NULL, then all
 *             existing entries are cleared. If both, the name and the
 *             URI are NULL, then the list entry is cleared.
 *
 * \return Entry index on success, -1 otherwise.
 */
int FavListSet(int idx, CONST char *name, CONST char * uri)
{
    int i;

    LogMsg(LOG_CONFIG, "Set %d,%s,%s\n", idx, name, uri);
    if (idx >= MAX_FAVORITES) {
        /* New entry. Find a free slot. */
        idx = LAST_FAVORITE + 1;
        while (idx < MAX_FAVORITES && favlist[idx].rs_name) {
            idx++;
        }
    }
    if (idx >= MAX_FAVORITES) {
        /* We are full. */
        return -1;
    }
    if (name || (name == NULL && uri == NULL)) {
        if (favlist[idx].rs_name) {
            free(favlist[idx].rs_name);
        }
        favlist[idx].rs_name = NULL;
    }
    if (name) {
        favlist[idx].rs_name = strdup(name);
    }

    if (uri) {
        if (favlist[idx].rs_streams < MAXNUM_STREAMS) {
            favlist[idx].rs_uri[favlist[idx].rs_streams] = strdup(uri);
            favlist[idx].rs_streams++;
        }
        else {
            idx = -1;
        }
    }
    else {
        for (i = 0; i < favlist[idx].rs_streams; i++) {
            if (favlist[idx].rs_uri[i]) {
                free(favlist[idx].rs_uri[i]);
            }
            favlist[idx].rs_uri[i] = NULL;
        }
        favlist[idx].rs_streams = 0;
    }
    return idx;
}

/*!
 * \brief Copy a favorites list entry.
 *
 * \param src Index of the source entry.
 * \param dst Index of the destination entry.
 *
 * \return 0 on success, -1 otherwise.
 */
int FavListCopy(int src, int dst)
{
    int i;

    /*
     * Release an existing entry at the destination index.
     */
    LogMsg(LOG_CONFIG, "Copying %d to %d\n", src, dst);
    if (favlist[dst].rs_name) {
        free(favlist[dst].rs_name);
    }
    for (i = 0; i < favlist[dst].rs_streams; i++) {
        if (favlist[dst].rs_uri[i]) {
            free(favlist[dst].rs_uri[i]);
        }
    }
    memset(&favlist[dst], 0, sizeof(RADIOSTATION));

    /*
     * Copy the source entry to the destination index.
     */
    if (favlist[src].rs_name) {
        favlist[dst].rs_name = strdup(favlist[src].rs_name);
        for (i = 0; i < favlist[src].rs_streams; i++) {
            if (favlist[src].rs_uri[i]) {
                favlist[dst].rs_uri[favlist[dst].rs_streams++] = strdup(favlist[src].rs_uri[i]);
            }
        }
        return 0;
    }
    return -1;
}

/*!
 * \brief Search favorite radio station.
 *
 * \param idx Start index.
 * \param dir Direction to search, 1 (forward) or -1 (backwards).
 *
 * \return Index of the new station or -1 if none available.
 */
int FavListSearch(int idx, int dir)
{
    int rc = idx;

    LogMsg(LOG_CONFIG, "Searching %d %d\n", idx, dir);
    for (;;) {
        rc += dir;
        if (rc <= LAST_FAVORITE) {
            rc = MAX_FAVORITES - 1;
        }
        else if (rc >= MAX_FAVORITES) {
            rc = LAST_FAVORITE + 1;
        }
        if ((favlist[rc].rs_name && favlist[rc].rs_streams)) {
            /* New entry found. */
            break;
        }
        if (rc == idx) {
            /* Whole list searched, but no entry found. */
            return -1;
        }
    }
    return rc;
}

/*!
 * \brief Calculate total size of the favorites list.
 *
 * \return Number of bytes used.
 */
size_t FavListSize(void)
{
    size_t rc = 0;
    int idx;
    int i;
    RADIOSTATION *flp;

    for (idx = 1; idx < MAX_FAVORITES; idx++) {
        flp = &favlist[idx];
        if (flp->rs_name) {
            rc += strlen(flp->rs_name) + 1;
            for (i = 0; i < flp->rs_streams; i++) {
                if (flp->rs_uri[i]) {
                    rc += strlen(flp->rs_uri[i]) + 1;
                }
            }
        }
    }
    return rc + 1;
}

/*!
 * \brief Save favorites list in non-volatile memory.
 *
 * \return 0 on success, -1 otherwise.
 */
int FavListSave(void)
{
    int idx;
    int i;
    RADIOSTATION *rsp;

    /* Rewind and save the magic name. */