8037fc6ffa
Bug: webrtc:342905193 No-Try: True Change-Id: Icc968be43b8830038ea9a1f5f604307220457807 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/361021 Auto-Submit: Florent Castelli <orphis@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Florent Castelli <orphis@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42911}
49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2023 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 COMMON_VIDEO_H265_H265_VPS_PARSER_H_
|
|
#define COMMON_VIDEO_H265_H265_VPS_PARSER_H_
|
|
|
|
#include <optional>
|
|
|
|
#include "api/array_view.h"
|
|
#include "rtc_base/system/rtc_export.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// A class for parsing out video parameter set (VPS) data from an H265 NALU.
|
|
class RTC_EXPORT H265VpsParser {
|
|
public:
|
|
// The parsed state of the VPS. Only some select values are stored.
|
|
// Add more as they are actually needed.
|
|
struct RTC_EXPORT VpsState {
|
|
VpsState();
|
|
|
|
uint32_t id = 0;
|
|
};
|
|
|
|
// Unpack RBSP and parse VPS state from the supplied buffer.
|
|
static std::optional<VpsState> ParseVps(rtc::ArrayView<const uint8_t> data);
|
|
// TODO: bugs.webrtc.org/42225170 - Deprecate.
|
|
static inline std::optional<VpsState> ParseVps(const uint8_t* data,
|
|
size_t length) {
|
|
return ParseVps(rtc::MakeArrayView(data, length));
|
|
}
|
|
|
|
protected:
|
|
// Parse the VPS state, for a bit buffer where RBSP decoding has already been
|
|
// performed.
|
|
static std::optional<VpsState> ParseInternal(
|
|
rtc::ArrayView<const uint8_t> buffer);
|
|
};
|
|
|
|
} // namespace webrtc
|
|
#endif // COMMON_VIDEO_H265_H265_VPS_PARSER_H_
|