4536289353
According to http://www.etsi.org/deliver/etsi_ts/126100_126199/126114/12.07.00_60/ts_126114v120700p.pdf, CVO byte should only be added in the last packet of each key frame or when the rotation changes. Currently, we're adding this byte in each frame to start with. BUG=4145 R=mflodman@webrtc.org, pthatcher@webrtc.org Review URL: https://webrtc-codereview.appspot.com/42439004 Cr-Commit-Position: refs/heads/master@{#8606} git-svn-id: http://webrtc.googlecode.com/svn/trunk@8606 4adac7df-926f-26a2-2b94-8c16560cd09d
93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
/*
|
|
* 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 WEBRTC_MODULES_RTP_RTCP_RTP_HEADER_EXTENSION_H_
|
|
#define WEBRTC_MODULES_RTP_RTCP_RTP_HEADER_EXTENSION_H_
|
|
|
|
#include <map>
|
|
|
|
#include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp_defines.h"
|
|
#include "webrtc/typedefs.h"
|
|
|
|
namespace webrtc {
|
|
|
|
const uint16_t kRtpOneByteHeaderExtensionId = 0xBEDE;
|
|
|
|
const size_t kRtpOneByteHeaderLength = 4;
|
|
const size_t kTransmissionTimeOffsetLength = 4;
|
|
const size_t kAudioLevelLength = 4;
|
|
const size_t kAbsoluteSendTimeLength = 4;
|
|
const size_t kVideoRotationLength = 4;
|
|
|
|
struct HeaderExtension {
|
|
HeaderExtension(RTPExtensionType extension_type)
|
|
: type(extension_type),
|
|
length(0) {
|
|
// TODO(solenberg): Create handler classes for header extensions so we can
|
|
// get rid of switches like these as well as handling code spread out all
|
|
// over.
|
|
switch (type) {
|
|
case kRtpExtensionTransmissionTimeOffset:
|
|
length = kTransmissionTimeOffsetLength;
|
|
break;
|
|
case kRtpExtensionAudioLevel:
|
|
length = kAudioLevelLength;
|
|
break;
|
|
case kRtpExtensionAbsoluteSendTime:
|
|
length = kAbsoluteSendTimeLength;
|
|
break;
|
|
case kRtpExtensionVideoRotation:
|
|
length = kVideoRotationLength;
|
|
break;
|
|
default:
|
|
assert(false);
|
|
}
|
|
}
|
|
|
|
const RTPExtensionType type;
|
|
uint8_t length;
|
|
};
|
|
|
|
class RtpHeaderExtensionMap {
|
|
public:
|
|
RtpHeaderExtensionMap();
|
|
~RtpHeaderExtensionMap();
|
|
|
|
void Erase();
|
|
|
|
int32_t Register(const RTPExtensionType type, const uint8_t id);
|
|
|
|
int32_t Deregister(const RTPExtensionType type);
|
|
|
|
bool IsRegistered(RTPExtensionType type) const;
|
|
|
|
int32_t GetType(const uint8_t id, RTPExtensionType* type) const;
|
|
|
|
int32_t GetId(const RTPExtensionType type, uint8_t* id) const;
|
|
|
|
size_t GetTotalLengthInBytes() const;
|
|
|
|
int32_t GetLengthUntilBlockStartInBytes(const RTPExtensionType type) const;
|
|
|
|
void GetCopy(RtpHeaderExtensionMap* map) const;
|
|
|
|
int32_t Size() const;
|
|
|
|
RTPExtensionType First() const;
|
|
|
|
RTPExtensionType Next(RTPExtensionType type) const;
|
|
|
|
private:
|
|
std::map<uint8_t, HeaderExtension*> extensionMap_;
|
|
};
|
|
}
|
|
|
|
#endif // WEBRTC_MODULES_RTP_RTCP_RTP_HEADER_EXTENSION_H_
|