blob: f176194be282564b6d5ad405e58a5e41ea7a7706 [file] [log] [blame]
/*
* Copyright (c) 2011 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.
*/
#include "modules/video_coding/packet.h"
#include <assert.h>
#include "modules/include/module_common_types.h"
namespace webrtc {
VCMPacket::VCMPacket()
: payloadType(0),
timestamp(0),
ntp_time_ms_(0),
seqNum(0),
dataPtr(NULL),
sizeBytes(0),
markerBit(false),
timesNacked(-1),
frameType(kEmptyFrame),
codec(kVideoCodecUnknown),
is_first_packet_in_frame(false),
completeNALU(kNaluUnset),
insertStartCode(false),
width(0),
height(0),
video_header(),
receive_time_ms(0) {
video_header.playout_delay = {-1, -1};
}
VCMPacket::VCMPacket(const uint8_t* ptr,
const size_t size,
const WebRtcRTPHeader& rtpHeader)
: payloadType(rtpHeader.header.payloadType),
timestamp(rtpHeader.header.timestamp),
ntp_time_ms_(rtpHeader.ntp_time_ms),
seqNum(rtpHeader.header.sequenceNumber),
dataPtr(ptr),
sizeBytes(size),
markerBit(rtpHeader.header.markerBit),
timesNacked(-1),
frameType(rtpHeader.frameType),
codec(kVideoCodecUnknown),
is_first_packet_in_frame(rtpHeader.type.Video.is_first_packet_in_frame),
completeNALU(kNaluComplete),
insertStartCode(false),
width(rtpHeader.type.Video.width),
height(rtpHeader.type.Video.height),
video_header(rtpHeader.type.Video) {
CopyCodecSpecifics(rtpHeader.type.Video);
if (markerBit) {
video_header.rotation = rtpHeader.type.Video.rotation;
}
// Playout decisions are made entirely based on first packet in a frame.
if (is_first_packet_in_frame) {
video_header.playout_delay = rtpHeader.type.Video.playout_delay;
} else {
video_header.playout_delay = {-1, -1};
}
}
void VCMPacket::Reset() {
payloadType = 0;
timestamp = 0;
ntp_time_ms_ = 0;
seqNum = 0;
dataPtr = NULL;
sizeBytes = 0;
markerBit = false;
timesNacked = -1;
frameType = kEmptyFrame;
codec = kVideoCodecUnknown;
is_first_packet_in_frame = false;
completeNALU = kNaluUnset;
insertStartCode = false;
width = 0;
height = 0;
memset(&video_header, 0, sizeof(RTPVideoHeader));
}
void VCMPacket::CopyCodecSpecifics(const RTPVideoHeader& videoHeader) {
switch (videoHeader.codec) {
case kRtpVideoVp8:
// Handle all packets within a frame as depending on the previous packet
// TODO(holmer): This should be changed to make fragments independent
// when the VP8 RTP receiver supports fragments.
if (is_first_packet_in_frame && markerBit)
completeNALU = kNaluComplete;
else if (is_first_packet_in_frame)
completeNALU = kNaluStart;
else if (markerBit)
completeNALU = kNaluEnd;
else
completeNALU = kNaluIncomplete;
codec = kVideoCodecVP8;
return;
case kRtpVideoVp9:
if (is_first_packet_in_frame && markerBit)
completeNALU = kNaluComplete;
else if (is_first_packet_in_frame)
completeNALU = kNaluStart;
else if (markerBit)
completeNALU = kNaluEnd;
else
completeNALU = kNaluIncomplete;
codec = kVideoCodecVP9;
return;
case kRtpVideoH264:
is_first_packet_in_frame = videoHeader.is_first_packet_in_frame;
if (is_first_packet_in_frame)
insertStartCode = true;
if (is_first_packet_in_frame && markerBit) {
completeNALU = kNaluComplete;
} else if (is_first_packet_in_frame) {
completeNALU = kNaluStart;
} else if (markerBit) {
completeNALU = kNaluEnd;
} else {
completeNALU = kNaluIncomplete;
}
codec = kVideoCodecH264;
return;
case kRtpVideoGeneric:
codec = kVideoCodecGeneric;
return;
case kRtpVideoNone:
codec = kVideoCodecUnknown;
return;
}
}
} // namespace webrtc