Index: webrtc/modules/video_coding/codecs/h264/include/h264_globals.h |
diff --git a/webrtc/modules/video_coding/codecs/h264/include/h264_globals.h b/webrtc/modules/video_coding/codecs/h264/include/h264_globals.h |
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index 0000000000000000000000000000000000000000..93c8887dcd4c43d895b6d16a64a5327b0d46e5fb |
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+/* |
+ * Copyright (c) 2012 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. |
+ */ |
+ |
+// This file contains codec dependent definitions that are needed in |
+// order to compile the WebRTC codebase, even if this codec is not used. |
+ |
+#ifndef WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_INCLUDE_H264_GLOBALS_H_ |
+#define WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_INCLUDE_H264_GLOBALS_H_ |
+ |
+namespace webrtc { |
+ |
+// The packetization types that we support: single, aggregated, and fragmented. |
+enum H264PacketizationTypes { |
+ kH264SingleNalu, // This packet contains a single NAL unit. |
+ kH264StapA, // This packet contains STAP-A (single time |
+ // aggregation) packets. If this packet has an |
+ // associated NAL unit type, it'll be for the |
+ // first such aggregated packet. |
+ kH264FuA, // This packet contains a FU-A (fragmentation |
+ // unit) packet, meaning it is a part of a frame |
+ // that was too large to fit into a single packet. |
+}; |
+ |
+// Packetization modes are defined in RFC 6184 section 6 |
+// Due to the structure containing this being initialized with zeroes |
+// in some places, and mode 1 being default, mode 1 needs to have the value |
+// zero. https://crbug.com/webrtc/6803 |
+enum class H264PacketizationMode { |
+ NonInterleaved = 0, // Mode 1 - STAP-A, FU-A is allowed |
+ SingleNalUnit // Mode 0 - only single NALU allowed |
+}; |
+ |
+// This function is declared inline because it is not clear which |
+// .cc file it should belong to. |
+// TODO(hta): Refactor. https://bugs.webrtc.org/6842 |
+inline std::ostream& operator<<(std::ostream& stream, |
+ H264PacketizationMode mode) { |
+ switch (mode) { |
+ case H264PacketizationMode::NonInterleaved: |
+ stream << "NonInterleaved"; |
+ break; |
+ case H264PacketizationMode::SingleNalUnit: |
+ stream << "SingleNalUnit"; |
+ break; |
+ } |
+ return stream; |
+} |
+ |
+struct NaluInfo { |
+ uint8_t type; |
+ int sps_id; |
+ int pps_id; |
+ |
+ // Offset and size are only valid for non-FuA packets. |
+ size_t offset; |
+ size_t size; |
+}; |
+ |
+const size_t kMaxNalusPerPacket = 10; |
+ |
+struct RTPVideoHeaderH264 { |
+ // The NAL unit type. If this is a header for a |
+ // fragmented packet, it's the NAL unit type of |
+ // the original data. If this is the header for an |
+ // aggregated packet, it's the NAL unit type of |
+ // the first NAL unit in the packet. |
+ uint8_t nalu_type; |
+ // The packetization type of this buffer - single, aggregated or fragmented. |
+ H264PacketizationTypes packetization_type; |
+ NaluInfo nalus[kMaxNalusPerPacket]; |
+ size_t nalus_length; |
+ // The packetization mode of this transport. Packetization mode |
+ // determines which packetization types are allowed when packetizing. |
+ H264PacketizationMode packetization_mode; |
+}; |
+ |
+} // namespace webrtc |
+ |
+#endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_INCLUDE_H264_GLOBALS_H_ |