196100efa6
This is a no-op change because rtc::Optional is an alias to absl::optional
This CL generated by running script passing top level directories except rtc_base and api
find $@ -type f \( -name \*.h -o -name \*.cc -o -name \*.mm \) \
-exec sed -i 's|rtc::Optional|absl::optional|g' {} \+ \
-exec sed -i 's|rtc::nullopt|absl::nullopt|g' {} \+ \
-exec sed -i 's|#include "api/optional.h"|#include "absl/types/optional.h"|' {} \+
find $@ -type f -name BUILD.gn \
-exec sed -r -i 's|"[\./api]*:optional"|"//third_party/abseil-cpp/absl/types:optional"|' {} \+;
git cl format
Bug: webrtc:9078
Change-Id: I9465c172e65ba6e6ed4e4fdc35b0b265038d6f71
Reviewed-on: https://webrtc-review.googlesource.com/84584
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23697}
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
/*
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* Copyright (c) 2015 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_H264_H264_BITSTREAM_PARSER_H_
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#define COMMON_VIDEO_H264_H264_BITSTREAM_PARSER_H_
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#include <stddef.h>
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#include <stdint.h>
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#include "absl/types/optional.h"
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#include "common_video/h264/pps_parser.h"
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#include "common_video/h264/sps_parser.h"
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namespace rtc {
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class BitBufferWriter;
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}
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namespace webrtc {
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// Stateful H264 bitstream parser (due to SPS/PPS). Used to parse out QP values
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// from the bitstream.
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// TODO(pbos): Unify with RTP SPS parsing and only use one H264 parser.
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// TODO(pbos): If/when this gets used on the receiver side CHECKs must be
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// removed and gracefully abort as we have no control over receive-side
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// bitstreams.
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class H264BitstreamParser {
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public:
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enum Result {
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kOk,
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kInvalidStream,
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kUnsupportedStream,
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};
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H264BitstreamParser();
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virtual ~H264BitstreamParser();
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// Parse an additional chunk of H264 bitstream.
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void ParseBitstream(const uint8_t* bitstream, size_t length);
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// Get the last extracted QP value from the parsed bitstream.
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bool GetLastSliceQp(int* qp) const;
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protected:
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void ParseSlice(const uint8_t* slice, size_t length);
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Result ParseNonParameterSetNalu(const uint8_t* source,
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size_t source_length,
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uint8_t nalu_type);
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// SPS/PPS state, updated when parsing new SPS/PPS, used to parse slices.
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absl::optional<SpsParser::SpsState> sps_;
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absl::optional<PpsParser::PpsState> pps_;
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// Last parsed slice QP.
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absl::optional<int32_t> last_slice_qp_delta_;
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};
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} // namespace webrtc
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#endif // COMMON_VIDEO_H264_H264_BITSTREAM_PARSER_H_
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