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/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef MODULES_AUDIO_CODING_NETEQ_RED_PAYLOAD_SPLITTER_H_
#define MODULES_AUDIO_CODING_NETEQ_RED_PAYLOAD_SPLITTER_H_
#include <cstddef>
#include "modules/audio_coding/neteq/packet.h"
namespace webrtc {
class DecoderDatabase;
static const size_t kRedHeaderLength = 4; // 4 bytes RED header.
static const size_t kRedLastHeaderLength =
1; // reduced size for last RED header.
// This class handles splitting of RED payloads into smaller parts.
// Codec-specific packet splitting can be performed by
// AudioDecoder::ParsePayload.
class RedPayloadSplitter {
public:
RedPayloadSplitter() {}
virtual ~RedPayloadSplitter() {}
RedPayloadSplitter(const RedPayloadSplitter&) = delete;
RedPayloadSplitter& operator=(const RedPayloadSplitter&) = delete;
// Splits each packet in `packet_list` into its separate RED payloads. Each
// RED payload is packetized into a Packet. The original elements in
// `packet_list` are properly deleted, and replaced by the new packets.
// Note that all packets in `packet_list` must be RED payloads, i.e., have
// RED headers according to RFC 2198 at the very beginning of the payload.
// Returns kOK or an error.
virtual bool SplitRed(PacketList* packet_list);
// Checks all packets in `packet_list`. Packets that are DTMF events or
// comfort noise payloads are kept. Except that, only one single payload type
// is accepted. Any packet with another payload type is discarded.
virtual void CheckRedPayloads(PacketList* packet_list,
const DecoderDatabase& decoder_database);
};
} // namespace webrtc
#endif // MODULES_AUDIO_CODING_NETEQ_RED_PAYLOAD_SPLITTER_H_
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