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#ifndef QPID_AMQP_0_10_FRAMEHEADER_H
#define QPID_AMQP_0_10_FRAMEHEADER_H
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/amqp_0_10/built_in_types.h"
#include <boost/shared_array.hpp>
#include <string.h>
#include <assert.h>
#include <iosfwd>
namespace qpid {
namespace amqp_0_10 {
enum FrameFlags { FIRST_SEGMENT=8, LAST_SEGMENT=4, FIRST_FRAME=2, LAST_FRAME=1 };
class FrameHeader {
public:
static const size_t SIZE=12;
static uint8_t trackFor(SegmentType type) { return type == 0 ? 0 : 1; }
FrameHeader(uint8_t flags_=0, SegmentType type_=SegmentType(), uint16_t size_=0, uint8_t track_=0, uint16_t channel_=0)
: flags(flags_), type(type_), size(size_), track(track_), channel(channel_)
{}
uint8_t getFlags() const { return flags; }
SegmentType getType() const { return type; }
/** @return size total size of of frame, including frame header. */
uint16_t getSize() const { return size; }
/** @return size of frame data, excluding frame header. */
uint16_t getDataSize() const { return size - SIZE; }
uint8_t getTrack() const { return track; }
uint16_t getChannel() const { return channel; }
void setFlags(uint8_t flags_) { flags=flags_; }
/** Also sets the track. There is no setTrack() */
void setType(SegmentType type_) { type=type_; track=trackFor(type); }
/** @param size total size of of frame, including frame header. */
void setSize(uint16_t size_) { size = size_; }
/** @param size size of frame data, excluding frame header. */
void setDataSize(uint16_t size_) { size = size_+SIZE; }
void setChannel(uint8_t channel_) { channel=channel_; }
bool allFlags(uint8_t f) const { return (flags & f) == f; }
bool anyFlags(uint8_t f) const { return (flags & f); }
void raiseFlags(uint8_t f) { flags |= f; }
void clearFlags(uint8_t f) { flags &= ~f; }
bool isComplete() const { return allFlags(FIRST_FRAME | LAST_FRAME); }
bool operator==(const FrameHeader&) const;
template <class S> void serialize(S& s) {
uint8_t pad8=0; uint32_t pad32=0;
s(flags)(type)(size)(pad8)(track)(channel)(pad32);
}
private:
uint8_t flags;
SegmentType type;
uint16_t size;
uint8_t track;
uint16_t channel;
};
std::ostream& operator<<(std::ostream&, const FrameHeader&);
}} // namespace qpid::amqp_0_10
#endif /*!QPID_AMQP_0_10_FRAMEHEADER_H*/
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