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Diffstat (limited to 'third_party/libwebrtc/modules/rtp_rtcp/source/rtp_dependency_descriptor_extension.h')
-rw-r--r-- | third_party/libwebrtc/modules/rtp_rtcp/source/rtp_dependency_descriptor_extension.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/rtp_rtcp/source/rtp_dependency_descriptor_extension.h b/third_party/libwebrtc/modules/rtp_rtcp/source/rtp_dependency_descriptor_extension.h new file mode 100644 index 0000000000..8d6e4b8d37 --- /dev/null +++ b/third_party/libwebrtc/modules/rtp_rtcp/source/rtp_dependency_descriptor_extension.h @@ -0,0 +1,59 @@ +/* + * Copyright (c) 2019 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. + */ +#ifndef MODULES_RTP_RTCP_SOURCE_RTP_DEPENDENCY_DESCRIPTOR_EXTENSION_H_ +#define MODULES_RTP_RTCP_SOURCE_RTP_DEPENDENCY_DESCRIPTOR_EXTENSION_H_ + +#include <bitset> +#include <cstdint> + +#include "absl/strings/string_view.h" +#include "api/array_view.h" +#include "api/rtp_parameters.h" +#include "api/transport/rtp/dependency_descriptor.h" +#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h" + +namespace webrtc { +// Trait to read/write the dependency descriptor extension as described in +// https://aomediacodec.github.io/av1-rtp-spec/#dependency-descriptor-rtp-header-extension +class RtpDependencyDescriptorExtension { + public: + static constexpr RTPExtensionType kId = kRtpExtensionDependencyDescriptor; + static constexpr absl::string_view Uri() { + return RtpExtension::kDependencyDescriptorUri; + } + + static bool Parse(rtc::ArrayView<const uint8_t> data, + const FrameDependencyStructure* structure, + DependencyDescriptor* descriptor); + + static size_t ValueSize(const FrameDependencyStructure& structure, + const DependencyDescriptor& descriptor) { + return ValueSize(structure, kAllChainsAreActive, descriptor); + } + static size_t ValueSize(const FrameDependencyStructure& structure, + std::bitset<32> active_chains, + const DependencyDescriptor& descriptor); + static bool Write(rtc::ArrayView<uint8_t> data, + const FrameDependencyStructure& structure, + const DependencyDescriptor& descriptor) { + return Write(data, structure, kAllChainsAreActive, descriptor); + } + static bool Write(rtc::ArrayView<uint8_t> data, + const FrameDependencyStructure& structure, + std::bitset<32> active_chains, + const DependencyDescriptor& descriptor); + + private: + static constexpr std::bitset<32> kAllChainsAreActive = ~uint32_t{0}; +}; + +} // namespace webrtc + +#endif // MODULES_RTP_RTCP_SOURCE_RTP_DEPENDENCY_DESCRIPTOR_EXTENSION_H_ |