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/*
* libjingle
* Copyright 2004 Google Inc.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#ifndef TALK_SESSION_MEDIA_BUNDLEFILTER_H_
#define TALK_SESSION_MEDIA_BUNDLEFILTER_H_
#include <set>
#include <vector>
#include "talk/media/base/streamparams.h"
#include "webrtc/base/basictypes.h"
namespace cricket {
// In case of single RTP session and single transport channel, all session
// ( or media) channels share a common transport channel. Hence they all get
// SignalReadPacket when packet received on transport channel. This requires
// cricket::BaseChannel to know all the valid sources, else media channel
// will decode invalid packets.
//
// This class determines whether a packet is destined for cricket::BaseChannel.
// For rtp packets, this is decided based on the payload type. For rtcp packets,
// this is decided based on the sender ssrc values.
class BundleFilter {
public:
BundleFilter();
~BundleFilter();
// Determines packet belongs to valid cricket::BaseChannel.
bool DemuxPacket(const char* data, size_t len, bool rtcp);
// Adds the supported payload type.
void AddPayloadType(int payload_type);
// Adding a valid source to the filter.
bool AddStream(const StreamParams& stream);
// Removes source from the filter.
bool RemoveStream(uint32_t ssrc);
// Utility methods added for unitest.
// True if |streams_| is not empty.
bool HasStreams() const;
bool FindStream(uint32_t ssrc) const;
bool FindPayloadType(int pl_type) const;
void ClearAllPayloadTypes();
private:
std::set<int> payload_types_;
std::vector<StreamParams> streams_;
};
} // namespace cricket
#endif // TALK_SESSION_MEDIA_BUNDLEFILTER_H_
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