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1 /*
2  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #include "webrtc/modules/interface/module_common_types.h"
12 #include "webrtc/modules/video_coding/main/source/packet.h"
13 
14 #include <assert.h>
15 
16 namespace webrtc {
17 
VCMPacket()18 VCMPacket::VCMPacket()
19   :
20     payloadType(0),
21     timestamp(0),
22     ntp_time_ms_(0),
23     seqNum(0),
24     dataPtr(NULL),
25     sizeBytes(0),
26     markerBit(false),
27     frameType(kFrameEmpty),
28     codec(kVideoCodecUnknown),
29     isFirstPacket(false),
30     completeNALU(kNaluUnset),
31     insertStartCode(false),
32     width(0),
33     height(0),
34     codecSpecificHeader() {
35 }
36 
VCMPacket(const uint8_t * ptr,const uint32_t size,const WebRtcRTPHeader & rtpHeader)37 VCMPacket::VCMPacket(const uint8_t* ptr,
38                      const uint32_t size,
39                      const WebRtcRTPHeader& rtpHeader) :
40     payloadType(rtpHeader.header.payloadType),
41     timestamp(rtpHeader.header.timestamp),
42     ntp_time_ms_(rtpHeader.ntp_time_ms),
43     seqNum(rtpHeader.header.sequenceNumber),
44     dataPtr(ptr),
45     sizeBytes(size),
46     markerBit(rtpHeader.header.markerBit),
47 
48     frameType(rtpHeader.frameType),
49     codec(kVideoCodecUnknown),
50     isFirstPacket(rtpHeader.type.Video.isFirstPacket),
51     completeNALU(kNaluComplete),
52     insertStartCode(false),
53     width(rtpHeader.type.Video.width),
54     height(rtpHeader.type.Video.height),
55     codecSpecificHeader(rtpHeader.type.Video)
56 {
57     CopyCodecSpecifics(rtpHeader.type.Video);
58 }
59 
VCMPacket(const uint8_t * ptr,uint32_t size,uint16_t seq,uint32_t ts,bool mBit)60 VCMPacket::VCMPacket(const uint8_t* ptr, uint32_t size, uint16_t seq, uint32_t ts, bool mBit) :
61     payloadType(0),
62     timestamp(ts),
63     ntp_time_ms_(0),
64     seqNum(seq),
65     dataPtr(ptr),
66     sizeBytes(size),
67     markerBit(mBit),
68 
69     frameType(kVideoFrameDelta),
70     codec(kVideoCodecUnknown),
71     isFirstPacket(false),
72     completeNALU(kNaluComplete),
73     insertStartCode(false),
74     width(0),
75     height(0),
76     codecSpecificHeader()
77 {}
78 
Reset()79 void VCMPacket::Reset() {
80   payloadType = 0;
81   timestamp = 0;
82   ntp_time_ms_ = 0;
83   seqNum = 0;
84   dataPtr = NULL;
85   sizeBytes = 0;
86   markerBit = false;
87   frameType = kFrameEmpty;
88   codec = kVideoCodecUnknown;
89   isFirstPacket = false;
90   completeNALU = kNaluUnset;
91   insertStartCode = false;
92   width = 0;
93   height = 0;
94   memset(&codecSpecificHeader, 0, sizeof(RTPVideoHeader));
95 }
96 
CopyCodecSpecifics(const RTPVideoHeader & videoHeader)97 void VCMPacket::CopyCodecSpecifics(const RTPVideoHeader& videoHeader)
98 {
99     switch(videoHeader.codec)
100     {
101         case kRtpVideoVp8:
102             {
103                 // Handle all packets within a frame as depending on the previous packet
104                 // TODO(holmer): This should be changed to make fragments independent
105                 // when the VP8 RTP receiver supports fragments.
106                 if (isFirstPacket && markerBit)
107                     completeNALU = kNaluComplete;
108                 else if (isFirstPacket)
109                     completeNALU = kNaluStart;
110                 else if (markerBit)
111                     completeNALU = kNaluEnd;
112                 else
113                     completeNALU = kNaluIncomplete;
114 
115                 codec = kVideoCodecVP8;
116                 break;
117             }
118         default:
119             {
120                 codec = kVideoCodecUnknown;
121                 break;
122             }
123     }
124 }
125 
126 }
127