/*
 * Copyright (c) 2023 Fancy Code.
 * 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 FFMPEG_DECODER_V2_H
#define FFMPEG_DECODER_V2_H
#ifdef __cplusplus
extern "C" {
#endif
#include <libavcodec/avcodec.h>
#include <libavcodec/packet.h>
#include <libavformat/avformat.h>
#include <libavutil/avassert.h>
#include <libavutil/avutil.h>
#include <libavutil/channel_layout.h>
#include <libavutil/imgutils.h>
#include <libavutil/mathematics.h>
#include <libavutil/opt.h>
#include <libavutil/timestamp.h>
#include <libswresample/swresample.h>
#include <libswscale/swscale.h>
#ifdef __cplusplus
}
#endif
#include <functional>
// constexpr int DECODER_UNSUPORTED = 0;
class FfmpegDecoderV2
{
public:
    /**
     * @brief When decoding a video stream, you need to use this constructor to provide the required parameters.
     * @param codecId Video stream format
     * @param width Video height
     * @param height Video width
     */
    FfmpegDecoderV2(const enum AVCodecID &codecId, const AVPixelFormat &decodePixelFormat, const int &width,
                    const int &height);
    virtual ~FfmpegDecoderV2() = default;
    bool Init(void);
    bool UnInit(void);
    void DecodeData(const void *data, const size_t &size, const unsigned long long &pts,
                    std::function<void(AVFrame *frame)> callback);

private:
    void AVParseData(const void *data, const size_t &size, std::function<void(AVFrame *frame)> callback);
    void AVDecodeData(AVPacket *pkt, std::function<void(AVFrame *frame)> callback);

private:
    static int select_sample_rate(const AVCodec *codec);
    static int select_channel_layout(const AVCodec *codec, AVChannelLayout *dst);
    static int check_sample_fmt(const AVCodec *codec, enum AVSampleFormat sample_fmt);

private:
    const enum AVCodecID mCodecId;
    AVCodec *mCodec;
    AVCodecContext *mCodecCtx;
    AVFrame *mFrame;
    AVPacket *mPacket;
    AVCodecParserContext *mParser;
    const int mVideoWidth;
    const int mVideoHeight;
    const AVPixelFormat mDecodePixelFormat;
};
#endif