| /* |
| * 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.video_header().is_first_packet_in_frame), |
| completeNALU(kNaluComplete), |
| insertStartCode(false), |
| width(rtpHeader.video_header().width), |
| height(rtpHeader.video_header().height), |
| video_header(rtpHeader.video_header()) { |
| CopyCodecSpecifics(rtpHeader.video_header()); |
| |
| 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}; |
| } |
| } |
| |
| 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; |
| video_header = {}; |
| } |
| |
| void VCMPacket::CopyCodecSpecifics(const RTPVideoHeader& videoHeader) { |
| codec = videoHeader.codec; |
| switch (videoHeader.codec) { |
| case kVideoCodecVP8: |
| // 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; |
| |
| return; |
| case kVideoCodecVP9: |
| 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; |
| |
| return; |
| case kVideoCodecH264: |
| 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; |
| } |
| return; |
| case kVideoCodecGeneric: |
| return; |
| default: |
| codec = kVideoCodecUnknown; |
| return; |
| } |
| } |
| |
| } // namespace webrtc |