Logo Search packages:      
Sourcecode: cmus version File versions  Download package

read_wrapper.c

/* 
 * Copyright 2004 Timo Hirvonen
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#include <read_wrapper.h>
#include <ip.h>
#include <file.h>

#include <errno.h>
#include <string.h>

ssize_t read_wrapper(struct input_plugin_data *ip_data, void *buffer, size_t count)
{
      int rc;

      if (ip_data->metaint == 0) {
            /* no metadata in the stream */
            return read(ip_data->fd, buffer, count);
      }

      if (ip_data->counter == ip_data->metaint) {
            /* read metadata */
            unsigned char byte;
            int len;

            rc = read(ip_data->fd, &byte, 1);
            if (rc == -1)
                  return -1;
            if (rc == 0)
                  return 0;
            if (byte != 0) {
                  len = ((int)byte) * 16;
                  ip_data->metadata[0] = 0;
                  rc = read_all(ip_data->fd, ip_data->metadata, len);
                  if (rc == -1)
                        return -1;
                  if (rc < len) {
                        ip_data->metadata[0] = 0;
                        return 0;
                  }
                  ip_data->metadata[len] = 0;
                  ip_data->metadata_changed = 1;
            }
            ip_data->counter = 0;
      }
      if (count + ip_data->counter > ip_data->metaint)
            count = ip_data->metaint - ip_data->counter;
      rc = read(ip_data->fd, buffer, count);
      if (rc > 0)
            ip_data->counter += rc;
      return rc;
}

Generated by  Doxygen 1.6.0   Back to index