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In order to eliminate the WebRTC Subtree mirror in Chromium, WebRTC is moving the content of the src/webrtc directory up to the src/ directory. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38 Reviewed-on: https://webrtc-review.googlesource.com/1560 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19845}
82 lines
3 KiB
C++
82 lines
3 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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// This file contains codec dependent definitions that are needed in
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// order to compile the WebRTC codebase, even if this codec is not used.
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#ifndef WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_INCLUDE_H264_GLOBALS_H_
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#define WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_INCLUDE_H264_GLOBALS_H_
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namespace webrtc {
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// The packetization types that we support: single, aggregated, and fragmented.
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enum H264PacketizationTypes {
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kH264SingleNalu, // This packet contains a single NAL unit.
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kH264StapA, // This packet contains STAP-A (single time
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// aggregation) packets. If this packet has an
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// associated NAL unit type, it'll be for the
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// first such aggregated packet.
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kH264FuA, // This packet contains a FU-A (fragmentation
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// unit) packet, meaning it is a part of a frame
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// that was too large to fit into a single packet.
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};
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// Packetization modes are defined in RFC 6184 section 6
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// Due to the structure containing this being initialized with zeroes
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// in some places, and mode 1 being default, mode 1 needs to have the value
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// zero. https://crbug.com/webrtc/6803
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enum class H264PacketizationMode {
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NonInterleaved = 0, // Mode 1 - STAP-A, FU-A is allowed
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SingleNalUnit // Mode 0 - only single NALU allowed
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};
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// This function is declared inline because it is not clear which
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// .cc file it should belong to.
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// TODO(hta): Refactor. https://bugs.webrtc.org/6842
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inline std::ostream& operator<<(std::ostream& stream,
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H264PacketizationMode mode) {
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switch (mode) {
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case H264PacketizationMode::NonInterleaved:
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stream << "NonInterleaved";
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break;
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case H264PacketizationMode::SingleNalUnit:
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stream << "SingleNalUnit";
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break;
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}
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return stream;
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}
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struct NaluInfo {
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uint8_t type;
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int sps_id;
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int pps_id;
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};
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const size_t kMaxNalusPerPacket = 10;
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struct RTPVideoHeaderH264 {
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// The NAL unit type. If this is a header for a
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// fragmented packet, it's the NAL unit type of
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// the original data. If this is the header for an
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// aggregated packet, it's the NAL unit type of
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// the first NAL unit in the packet.
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uint8_t nalu_type;
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// The packetization type of this buffer - single, aggregated or fragmented.
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H264PacketizationTypes packetization_type;
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NaluInfo nalus[kMaxNalusPerPacket];
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size_t nalus_length;
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// The packetization mode of this transport. Packetization mode
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// determines which packetization types are allowed when packetizing.
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H264PacketizationMode packetization_mode;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_INCLUDE_H264_GLOBALS_H_
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