h265_decoder.h

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/******************************************************************************
 * Copyright 2019 The Apollo Authors. All Rights Reserved.
 *
 * 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.
 *****************************************************************************/

#pragma once

#include <vector>

extern "C" {
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavutil/imgutils.h>
#include <libswscale/swscale.h>
}

namespace apollo {
namespace drivers {
namespace video {

class H265Decoder {
 public:
  enum class DecodingResult {
    SUCCESS,
    FATAL,
    WARN,
  };

 public:
  H265Decoder() = default;

  // Init decoder by acquiring resources
  bool Init();

  // Process frames according to input data, and output converted data
  DecodingResult Process(const uint8_t* indata, const int32_t insize,
                         std::vector<uint8_t>* outdata) const;

  // Destructor, releasing the resources
  ~H265Decoder() { Release(); }

  // Getter of codec_ctx_h265_
  AVCodecContext* GetCodecCtxH265() const { return codec_ctx_h265_; }

 private:
  void Release();

  AVCodecContext* codec_ctx_h265_ = nullptr;
  AVCodecContext* codec_ctx_jpeg_ = nullptr;
  AVFrame* yuv_frame_ = nullptr;
};

}  // namespace video
}  // namespace drivers
}  // namespace apollo