44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
/*
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* Copyright (c) 2018 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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#ifndef COMMON_VIDEO_H265_H265_VPS_PARSER_H_
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#define COMMON_VIDEO_H265_H265_VPS_PARSER_H_
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#include "absl/types/optional.h"
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namespace rtc {
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class BitBuffer;
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}
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namespace webrtc {
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// A class for parsing out sequence parameter set (VPS) data from an H265 NALU.
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class H265VpsParser {
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public:
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// The parsed state of the VPS. Only some select values are stored.
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// Add more as they are actually needed.
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struct VpsState {
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VpsState();
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uint32_t id = 0;
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};
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// Unpack RBSP and parse VPS state from the supplied buffer.
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static absl::optional<VpsState> ParseVps(const uint8_t* data, size_t length);
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protected:
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// Parse the VPS state, for a bit buffer where RBSP decoding has already been
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// performed.
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static absl::optional<VpsState> ParseInternal(rtc::BitBuffer* bit_buffer);
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};
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} // namespace webrtc
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#endif // COMMON_VIDEO_H265_H265_VPS_PARSER_H_
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