chromium/third_party/perfetto/include/perfetto/public/abi/pb_decoder_abi.h

/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef INCLUDE_PERFETTO_PUBLIC_ABI_PB_DECODER_ABI_H_
#define INCLUDE_PERFETTO_PUBLIC_ABI_PB_DECODER_ABI_H_

#include <stddef.h>
#include <stdint.h>

#include "perfetto/public/abi/export.h"

#ifdef __cplusplus
extern "C" {
#endif

// Stores the state required to decode a protobuf message (from a continuous
// memory buffer).
struct PerfettoPbDecoder { … };

enum PerfettoPbDecoderStatus { … };

// The content of a length-delimited field (wire type 2)
struct PerfettoPbDecoderDelimitedField { … };

// A field parsed by the decoder.
struct PerfettoPbDecoderField { … };

// Parses a field and returns it. Advances `*decoder->read_ptr` to point after
// the field.
PERFETTO_SDK_EXPORT struct PerfettoPbDecoderField PerfettoPbDecoderParseField(
    struct PerfettoPbDecoder* decoder);

// Advances `*decoder->read_ptr` to point after the current field.
// Returns a `PerfettoPbDecoderStatus`.
PERFETTO_SDK_EXPORT uint32_t
PerfettoPbDecoderSkipField(struct PerfettoPbDecoder* decoder);

#ifdef __cplusplus
}
#endif

#endif  // INCLUDE_PERFETTO_PUBLIC_ABI_PB_DECODER_ABI_H_