modules/video_coding/packet.cc

/*
 *  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(kVideoCodecGeneric),
      is_first_packet_in_frame(false),
      is_last_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(rtpHeader.video_header().codec),
      is_first_packet_in_frame(
          rtpHeader.video_header().is_first_packet_in_frame),
      is_last_packet_in_frame(rtpHeader.video_header().is_last_packet_in_frame),
      completeNALU(kNaluIncomplete),
      insertStartCode(rtpHeader.video_header().codec == kVideoCodecH264 &&
                      rtpHeader.video_header().is_first_packet_in_frame),
      width(rtpHeader.video_header().width),
      height(rtpHeader.video_header().height),
      video_header(rtpHeader.video_header()) {
  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;
  }

  if (markerBit) {
    video_header.rotation = rtpHeader.video_header().rotation;
  }
  // Playout decisions are made entirely based on first packet in a frame.
  if (is_first_packet_in_frame) {
    video_header.playout_delay = rtpHeader.video_header().playout_delay;
  } else {
    video_header.playout_delay = {-1, -1};
  }
}

}  // namespace webrtc