972f28335a
This is part of effort to enable HEVC for WebRTC. Parser added here to support parsing of QP/picture size for bitstream, for dynamic adaptation and stream metadata abstraction. Bug: webrtc:13485 Change-Id: I2fbdf210e72e77989ca87ce285da174df5bedd5c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/298421 Reviewed-by: Sergey Silkin <ssilkin@webrtc.org> Reviewed-by: Philip Eliasson <philipel@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Sergey Silkin <ssilkin@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40572}
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
/*
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* Copyright (c) 2023 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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#include "api/array_view.h"
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namespace webrtc {
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// A class for parsing out video 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(
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rtc::ArrayView<const uint8_t> 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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