1 /*
2  *  Copyright (c) 2018 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 #ifndef MODULES_RTP_RTCP_SOURCE_RTP_VIDEO_HEADER_H_
11 #define MODULES_RTP_RTCP_SOURCE_RTP_VIDEO_HEADER_H_
12 
13 #include <bitset>
14 #include <cstdint>
15 
16 #include "absl/container/inlined_vector.h"
17 #include "absl/types/optional.h"
18 #include "absl/types/variant.h"
19 #include "api/transport/rtp/dependency_descriptor.h"
20 #include "api/video/color_space.h"
21 #include "api/video/video_codec_type.h"
22 #include "api/video/video_content_type.h"
23 #include "api/video/video_frame_type.h"
24 #include "api/video/video_rotation.h"
25 #include "api/video/video_timing.h"
26 #include "modules/video_coding/codecs/h264/include/h264_globals.h"
27 #ifndef DISABLE_H265
28 #include "modules/video_coding/codecs/h265/include/h265_globals.h"
29 #endif
30 #include "modules/video_coding/codecs/vp8/include/vp8_globals.h"
31 #include "modules/video_coding/codecs/vp9/include/vp9_globals.h"
32 
33 namespace webrtc {
34 // Details passed in the rtp payload for legacy generic rtp packetizer.
35 // TODO(bugs.webrtc.org/9772): Deprecate in favor of passing generic video
36 // details in an rtp header extension.
37 struct RTPVideoHeaderLegacyGeneric {
38   uint16_t picture_id;
39 };
40 
41 #ifndef DISABLE_H265
42 using RTPVideoTypeHeader = absl::variant<absl::monostate,
43                                          RTPVideoHeaderVP8,
44                                          RTPVideoHeaderVP9,
45                                          RTPVideoHeaderH264,
46                                          RTPVideoHeaderH265,
47 										 RTPVideoHeaderLegacyGeneric>;
48 #else
49 using RTPVideoTypeHeader = absl::variant<absl::monostate,
50                                          RTPVideoHeaderVP8,
51                                          RTPVideoHeaderVP9,
52                                          RTPVideoHeaderH264,
53 										 RTPVideoHeaderLegacyGeneric>;
54 #endif
55 
56 struct RTPVideoHeader {
57   struct GenericDescriptorInfo {
58     GenericDescriptorInfo();
59     GenericDescriptorInfo(const GenericDescriptorInfo& other);
60     ~GenericDescriptorInfo();
61 
62     int64_t frame_id = 0;
63     int spatial_index = 0;
64     int temporal_index = 0;
65     absl::InlinedVector<DecodeTargetIndication, 10> decode_target_indications;
66     absl::InlinedVector<int64_t, 5> dependencies;
67     absl::InlinedVector<int, 4> chain_diffs;
68     std::bitset<32> active_decode_targets = ~uint32_t{0};
69   };
70 
71   RTPVideoHeader();
72   RTPVideoHeader(const RTPVideoHeader& other);
73 
74   ~RTPVideoHeader();
75 
76   absl::optional<GenericDescriptorInfo> generic;
77 
78   VideoFrameType frame_type = VideoFrameType::kEmptyFrame;
79   uint16_t width = 0;
80   uint16_t height = 0;
81   VideoRotation rotation = VideoRotation::kVideoRotation_0;
82   VideoContentType content_type = VideoContentType::UNSPECIFIED;
83   bool is_first_packet_in_frame = false;
84   bool is_last_packet_in_frame = false;
85   bool is_last_frame_in_picture = true;
86   uint8_t simulcastIdx = 0;
87   VideoCodecType codec = VideoCodecType::kVideoCodecGeneric;
88 
89   VideoPlayoutDelay playout_delay;
90   VideoSendTiming video_timing;
91   absl::optional<ColorSpace> color_space;
92   // This field is meant for media quality testing purpose only. When enabled it
93   // carries the webrtc::VideoFrame id field from the sender to the receiver.
94   absl::optional<uint16_t> video_frame_tracking_id;
95   RTPVideoTypeHeader video_type_header;
96 };
97 
98 }  // namespace webrtc
99 
100 #endif  // MODULES_RTP_RTCP_SOURCE_RTP_VIDEO_HEADER_H_
101