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/* AlsaSubscriber.cpp - Subscriber class to interface with AlsaNode
* Copyright (C) 1998-2002 Andy Lo A Foe <andy@loafoe.com>
*
* This file is part of AlsaPlayer.
*
* AlsaPlayer 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 3 of the License, or
* (at your option) any later version.
*
* AlsaPlayer 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "AlsaSubscriber.h"
#include <cstdio>
#include <cstring>
#include <cassert>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <fcntl.h>
#include <sched.h>
AlsaSubscriber::AlsaSubscriber()
{
the_node = NULL;
the_ID = -1;
preferred_pos = POS_BEGIN;
}
AlsaSubscriber::~AlsaSubscriber()
{
if (the_node && the_node->IsInStream(the_ID))
ExitStream();
Unsubscribe();
}
void AlsaSubscriber::Subscribe(AlsaNode *node, int pos)
{
the_node = node;
preferred_pos = pos;
}
void AlsaSubscriber::Unsubscribe()
{
if (the_node && the_node->IsInStream(the_ID)) {
the_node->RemoveStreamer(the_ID);
}
the_node = NULL;
the_ID = -1;
}
void AlsaSubscriber::EnterStream(streamer_type str, void *arg)
{
if (the_node) {
the_ID = the_node->AddStreamer(str, arg, preferred_pos);
the_node->StartStreaming();
}
}
void AlsaSubscriber::ExitStream()
{
if (the_node && the_node->IsInStream(the_ID)) {
if (!the_node->RemoveStreamer(the_ID)) {
puts("ERROR! Failed to remove streamer");
} else {
the_ID = -1;
}
}
}
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