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# ······
# build settings
SHFLAGS='-shared -Wl,-soname,$$(@F)'
LIBPREF="lib"
LIBSUF=".a"
FULLNAME='$(NAME)$(BUILDSUF)'
LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
SLIBPREF="lib"
SLIBSUF=".so"
SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'

# Modified configuration
SLIBNAME_WITH_MAJOR='$(SLIBNAME)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
LIB_INSTALL_EXTRA_CMD='$$(RANLIB)"$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
SLIB_INSTALL_LINKS='$(SLIBNAME)'
# ······

# Clear previous compilation
make clean
# Configure your NDK path here
export NDK=/Users/bytedance/Library/Android/sdk/ndk/21.4.7075529
TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/darwin-x86_64


function build_android
{

./configure \
--prefix=$PREFIX \
--disable-postproc \
--disable-debug \
--disable-doc \
--enable-FFmpeg \
--disable-doc \
--disable-symver \
--disable-static \
--enable-shared \
--cross-prefix=$CROSS_PREFIX \
--target-os=android \
--arch=$ARCH \
--cpu=$CPU \
--cc=$CC \
--cxx=$CXX \
--enable-cross-compile \
--sysroot=$SYSROOT \
--extra-cflags="-Os -fpic $OPTIMIZE_CFLAGS" \
--extra-ldflags="$ADDI_LDFLAGS"

make clean
make -j16
make install

echo "============================ build android arm64-v8a success =========================="

}

# arm64-v8a
ARCH=arm64
CPU=armv8-a
API=21
CC=$TOOLCHAIN/bin/aarch64-linux-android$API-clang
CXX=$TOOLCHAIN/bin/aarch64-linux-android$API-clang++
SYSROOT=$NDK/toolchains/llvm/prebuilt/darwin-x86_64/sysroot
CROSS_PREFIX=$TOOLCHAIN/bin/aarch64-linux-android-
PREFIX=$(pwd)/android/$CPU
OPTIMIZE_CFLAGS="-march=$CPU"

echo $CC

build_android

#armv7-a
ARCH=arm
CPU=armv7-a
API=21
CC=$TOOLCHAIN/bin/armv7a-linux-androideabi$API-clang
CXX=$TOOLCHAIN/bin/armv7a-linux-androideabi$API-clang++
SYSROOT=$NDK/toolchains/llvm/prebuilt/darwin-x86_64/sysroot
CROSS_PREFIX=$TOOLCHAIN/bin/arm-linux-androideabi-
PREFIX=$(pwd)/android/$CPU
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU "

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // Example of a call to a native method
        sample_text.text = stringFromJNI()
    }

    // Declare an external reference method, which corresponds to the C/C++ layer code.
    external fun stringFromJNI(): String

    companion object {

        // Load the C/C++ compiled library: ffmpeg in init{}
        // The definition and addition of the library name are completed in CMakeLists.txt
        init {
            System.loadLibrary("ffmpeg")
        }
    }
}

#include <jni.h>
#include <string>
extern "C" JNIEXPORT jstring JNICALL
Java_com_bytedance_example_MainActivity_stringFromJNI(
        JNIEnv *env,
        jobject /* this */) {
    std::string hello = "Hello from C++";
    return env->NewStringUTF(hello.c_str());
}

# For more information about using CMake with Android Studio, read the
# documentation: https://d.android.com/studio/projects/add-native-code.html

# Sets the minimum version of CMake required to build the native library.

cmake_minimum_required(VERSION 3.10.2)

# Declares and names the project.

project("ffmpeg")

# Creates and names a library, sets it as either STATIC
# or SHARED, and provides the relative paths to its source code.
# You can define multiple libraries, and CMake builds them for you.
# Gradle automatically packages shared libraries with your APK.

# Define the directory for so libraries and header files for later use
set(FFmpeg_lib_dir ${CMAKE_SOURCE_DIR}/../jniLibs/${ANDROID_ABI})
set(FFmpeg_head_dir ${CMAKE_SOURCE_DIR}/FFmpeg)

# Add header file directory
include_directories(
        FFmpeg/include
)

add_library( # Sets the name of the library.
        ffmmpeg

        # Sets the library as a shared library.
        SHARED

        # Provides a relative path to your source file(s).
        native-lib.cpp
        )

# Searches for a specified prebuilt library and stores the path as a
# variable. Because CMake includes system libraries in the search path by
# default, you only need to specify the name of the public NDK library
# you want to add. CMake verifies that the library exists before
# completing its build.

# Add FFmpeg related so libraries
add_library( avutil
        SHARED
        IMPORTED )
set_target_properties( avutil
        PROPERTIES IMPORTED_LOCATION
        ${FFmpeg_lib_dir}/libavutil.so )
add_library( swresample
        SHARED
        IMPORTED )
set_target_properties( swresample
        PROPERTIES IMPORTED_LOCATION
        ${FFmpeg_lib_dir}/libswresample.so )

add_library( avcodec
        SHARED
        IMPORTED )
set_target_properties( avcodec
        PROPERTIES IMPORTED_LOCATION
        ${FFmpeg_lib_dir}/libavcodec.so )


find_library( # Sets the name of the path variable.
        log-lib

        # Specifies the name of the NDK library that
        # you want CMake to locate.
        log)

# Specifies libraries CMake should link to your target library. You
# can link multiple libraries, such as libraries you define in this
# build script, prebuilt third-party libraries, or system libraries.

target_link_libraries( # Specifies the target library.
        audioffmmpeg

        # Links the target library to the log library
        # included in the NDK.
        ${log-lib})

// 1 Allocate AVFormatContext
avformat_alloc_context();
// 2 Open file input stream
avformat_open_input(AVFormatContext **ps, const char *url,
                        const AVInputFormat *fmt, AVDictionary **options);
// 3 Extract data stream information from the input file
avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options);
// 4 Allocate codec context
avcodec_alloc_context3(const AVCodec *codec);
// 5 Fill codec context based on codec parameters related to the data stream
avcodec_parameters_to_context(AVCodecContext *codec,
                                  const AVCodecParameters *par);
// 6 Find the corresponding registered codec
avcodec_find_decoder(enum AVCodecID id);
// 7 Open codec
avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options);
// 8 Continuously extract compressed frame data from the stream, obtaining compressed data for one frame of video
av_read_frame(AVFormatContext *s, AVPacket *pkt);
// 9 Send raw compressed data to the decoder (compressed data)
avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt);
// 10 Receive decoded data output from the decoder
avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame);

av_register_all();

auto av_format_context = avformat_alloc_context();
avformat_open_input(&av_format_context, path_.c_str(), nullptr, nullptr);
avformat_find_stream_info(av_format_context, nullptr);

int video_stream_index = -1;
for (int i = 0; i < av_format_context->nb_streams; i++) {
    // Match and find the index of the video media stream,
    if (av_format_context->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
        video_stream_index = i;
        LOGD(TAG, "find video stream index = %d", video_stream_index);
        break;
    }
}

// Get the video media stream
auto stream = av_format_context->streams[video_stream_index];
// Find the registered decoder
auto codec = avcodec_find_decoder(stream->codecpar->codec_id);
// Get the decoder context
AVCodecContext* codec_ctx = avcodec_alloc_context3(codec);
// Configure the video media stream parameters to the decoder context
auto ret = avcodec_parameters_to_context(codec_ctx, stream->codecpar);

if (ret >= 0) {
    // Open the decoder
    avcodec_open2(codec_ctx, codec, nullptr);
    // ······
}

video_width_ = codec_ctx->width;
video_height_ = codec_ctx->height;

int buffer_size = av_image_get_buffer_size(AV_PIX_FMT_RGBA,
                                           video_width_, video_height_, 1);
// Output buffer
out_buffer_ = (uint8_t*) av_malloc(buffer_size * sizeof(uint8_t));
// Limit the number of pixels in the buffer by setting the width and height, rather than the physical display size of the screen.
// If the buffer does not match the display size of the screen, the actual display may be stretched or compressed.
int result = ANativeWindow_setBuffersGeometry(native_window_, video_width_,
                                              video_height_, WINDOW_FORMAT_RGBA_8888);

auto rgba_frame = av_frame_alloc();
av_image_fill_arrays(rgba_frame->data, rgba_frame->linesize,
                     out_buffer_,
                     AV_PIX_FMT_RGBA,
                     video_width_, video_height_, 1);

struct SwsContext* data_convert_context = sws_getContext(
                    video_width_, video_height_, codec_ctx->pix_fmt,
                    video_width_, video_height_, AV_PIX_FMT_RGBA,
                    SWS_BICUBIC, nullptr, nullptr, nullptr);

auto frame = av_frame_alloc();
auto packet = av_packet_alloc();

ret = av_read_frame(av_format_context, packet);
if (packet->size) {
    Decode(codec_ctx, packet, frame, stream, lock, data_convert_context, rgba_frame);
}

/* send the packet with the compressed data to the decoder */
ret = avcodec_send_packet(codec_ctx, pkt);

while (ret >= 0 && !is_stop_) {
    // Return the decoded data to frame
    ret = avcodec_receive_frame(codec_ctx, frame);
    if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
        return;
    } else if (ret < 0) {
        return;
    }
    // Get the current decoded frame, convert its pts into a timestamp for comparison with the specified timestamp
    auto decode_time_ms = frame->pts * 1000 / stream->time_base.den;
    if (decode_time_ms >= time_ms_) {
        last_decode_time_ms_ = decode_time_ms;
        is_seeking_ = false;
        // ······
        // Image data format conversion
        // ······
        // Draw the converted data on the screen
    }
    av_packet_unref(pkt);
}

// Image data format conversion
int result = sws_scale(
        sws_context,
        (const uint8_t* const*) frame->data, frame->linesize,
        0, video_height_,
        rgba_frame->data, rgba_frame->linesize);

if (result <= 0) {
    LOGE(TAG, "Player Error : data convert fail");
    return;
}

// Playing
result = ANativeWindow_lock(native_window_, &window_buffer_, nullptr);
if (result < 0) {
    LOGE(TAG, "Player Error : Can not lock native window");
} else {
    // Draw the image on the interface
    // Note: The length of pixels in one row of rgba_frame and window_buffer may not match
    // It needs to be converted properly, otherwise it may cause screen artifacts
    auto bits = (uint8_t*) window_buffer_.bits;
    for (int h = 0; h < video_height_; h++) {
        memcpy(bits + h * window_buffer_.stride * 4,
               out_buffer_ + h * rgba_frame->linesize[0],
               rgba_frame->linesize[0]);
    }
    ANativeWindow_unlockAndPost(native_window_);
}

sws_freeContext(data_convert_context);
av_free(out_buffer_);
av_frame_free(&rgba_frame);
av_frame_free(&frame);
av_packet_free(&packet);

avcodec_close(codec_ctx);
avcodec_free_context(&codec_ctx);

avformat_close_input(&av_format_context);
avformat_free_context(av_format_context);
ANativeWindow_release(native_window_);

VideoDecoder(const char* path, std::function<void(long timestamp)> on_decode_frame);

void Prepare(ANativeWindow* window);

bool DecodeFrame(long time_ms);

void Release();

condition_.wait(lock);

bool VideoDecoder::DecodeFrame(long time_ms) {
    // ······
    time_ms_ = time_ms;
    condition_.notify_all();
    return true;
}

int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp,
                  int flags);

if (!is_seeking_ && (time_ms_ > last_decode_time_ms_ + 1000 ||
                     time_ms_ < last_decode_time_ms_ - 50)) {
    is_seeking_ = true;
    // The timestamp passed in for seeking is the specified frame with the time_base, so it needs to be calculated using times_ms
    LOGD(TAG, "seek frame time_ms_ = %ld， last_decode_time_ms_ = %ld", time_ms_,
         last_decode_time_ms_);
    av_seek_frame(av_format_context,
                  video_stream_index,
                  time_ms_ * stream->time_base.den / 1000,
                  AVSEEK_FLAG_BACKWARD);
}

// Insert seek logic here
// Next is to read the next frame of the video stream
int ret = av_read_frame(av_format_context, packet);

if (!is_seeking_ && (time_ms_ > last_decode_time_ms_ + 1000 ||
                     time_ms_ < last_decode_time_ms_ - 50)) {
    is_seeking_ = true;
    av_seek_frame(···,···,···,AVSEEK_FLAG_BACKWARD);
}

bool VideoDecoder::DecodeFrame(long time_ms) {
    LOGD(TAG, "DecodeFrame time_ms = %ld", time_ms);
    if (last_decode_time_ms_ == time_ms || time_ms_ == time_ms) {
        LOGD(TAG, "DecodeFrame last_decode_time_ms_ == time_ms");
        return false;
    }
    if (time_ms <= last_decode_time_ms_ &&
        time_ms + 50 >= last_decode_time_ms_) {
        return false;
    }
    time_ms_ = time_ms;
    condition_.notify_all();
    return true;
}

// pts of AVPacket
   /**
    * Presentation timestamp in AVStream->time_base units; the time at which
    * the decompressed packet will be presented to the user.
    * Can be AV_NOPTS_VALUE if it is not stored in the file.
    * pts MUST be larger or equal to dts as presentation cannot happen before
    * decompression, unless one wants to view hex dumps. Some formats misuse
    * the terms dts and pts/cts to mean something different. Such timestamps
    * must be converted to true pts/dts before they are stored in AVPacket.
    */
   int64_t pts;

   // pts of AVFrame
   /**
    * Presentation timestamp in time_base units (time when frame should be shown to user).
    */
   int64_t pts;

auto decode_time_ms = frame->pts * 1000 / stream->time_base.den;
LOGD(TAG, "decode_time_ms = %ld", decode_time_ms);
if (decode_time_ms >= time_ms_) {
    last_decode_time_ms_ = decode_time_ms;
    is_seeking = false;
    // Draw the screen
    // ····
}

// Read several audio frames or one video frame from the stream,
// Here is reading one video frame (a complete frame), obtaining the compressed data for one frame of video, which can then be decoded.
ret = av_read_frame(av_format_context, packet);
if (ret < 0) {
    avcodec_flush_buffers(codec_ctx);
    av_seek_frame(av_format_context, video_stream_index,
                  time_ms_ * stream->time_base.den / 1000, AVSEEK_FLAG_BACKWARD);
    LOGD(TAG, "ret < 0, condition_.wait(lock)");
    // Prevent decoding the last frame when there is no data left in the video
    on_decode_frame_(last_decode_time_ms_);
    condition_.wait(lock);
}

// FFmpegVideoDecoder.kt
class FFmpegVideoDecoder(
    path: String,
    val onDecodeFrame: (timestamp: Long, texture: SurfaceTexture, needRender: Boolean) -> Unit
){
    // Extract the timeMs frame, based on whether sync is synchronous waiting
    fun decodeFrame(timeMS: Long, sync: Boolean = false) {
        // If no frame extraction is needed, do not wait
        if (nativeDecodeFrame(decoderPtr, timeMS) && sync) {
            // ······
    } else {
            // ······
        }
    }

    private external fun nativeDecodeFrame(decoder: Long, timeMS: Long): Boolean

    companion object {
        const val TAG = "FFmpegVideoDecoder"

        init {
            System.loadLibrary("ffmmpeg")

        }
    }
}

// native-lib.cpp
extern "C"
JNIEXPORT jboolean JNICALL
Java_com_example_decoder_video_FFmpegVideoDecoder_nativeDecodeFrame(JNIEnv* env,
                                                               jobject thiz,
                                                               jlong decoder,
                                                               jlong time_ms) {
    auto videoDecoder = (codec::VideoDecoder*)decoder;
    return videoDecoder->DecodeFrame(time_ms);
}

#include <jni.h>
#include <mutex>
#include <android/native_window.h>
#include <android/native_window_jni.h>
#include <time.h>

extern "C" {
#include <libavformat/avformat.h>
#include <libavcodec/avcodec.h>
#include <libswresample/swresample.h>
#include <libswscale/swscale.h>
}
#include <string>
/*
 * VideoDecoder can be used to decode video media stream data from a certain audio and video file (e.g., .mp4).
 * After passing in the specified file path from the Java layer, it can loop through the specified timestamp for decoding (frame extraction) at a certain fps, which is implemented by the DecodeFrame provided by C++.
 * At the end of each decoding, the timestamp of the decoded frame is called back to the upper layer decoder for other operations.
 */
namespace codec {
class VideoDecoder {

private:
    std::string path_;
    long time_ms_ = -1;
    long last_decode_time_ms_ = -1;
    bool is_seeking_ = false;
    ANativeWindow* native_window_ = nullptr;
    ANativeWindow_Buffer window_buffer_{};、
    // Video width and height properties
    int video_width_ = 0;
    int video_height_ = 0;
    uint8_t* out_buffer_ = nullptr;
    // on_decode_frame is used to callback the extracted timestamp of the specified frame to the upper layer decoder for other operations.
    std::function<void(long timestamp)> on_decode_frame_ = nullptr;
    bool is_stop_ = false;

    // Will be used in conjunction with the lock "std::unique_lock<std::mutex>"
    std::mutex work_queue_mtx;
    // The property that actually performs synchronization waiting and waking
    std::condition_variable condition_;
    // The function that actually performs decoding
    void Decode(AVCodecContext* codec_ctx, AVPacket* pkt, AVFrame* frame, AVStream* stream,
                std::unique_lock<std::mutex>& lock, SwsContext* sws_context, AVFrame* pFrame);

public:
    // When creating a decoder, you need to pass in the media file path and a callback on_decode_frame after decoding.
    VideoDecoder(const char* path, std::function<void(long timestamp)> on_decode_frame);
    // Wrap the Surface passed in from the upper layer in the JNI layer to create a new ANativeWindow, which will be used when drawing frame data after decoding
    void Prepare(ANativeWindow* window);
    // Extract the specified timestamp video frame, can be called by the upper layer
    bool DecodeFrame(long time_ms);
    // Release decoder resources
    void Release();
    // Get the current system millisecond time
    static int64_t GetCurrentMilliTime(void);
};

}

#include "VideoDecoder.h"
#include "../log/Logger.h"
#include <thread>
#include <utility>

extern "C" {
#include <libavutil/imgutils.h>
}

#define TAG "VideoDecoder"
namespace codec {

VideoDecoder::VideoDecoder(const char* path, std::function<void(long timestamp)> on_decode_frame)
        : on_decode_frame_(std::move(on_decode_frame)) {
    path_ = std::string(path);
}

void VideoDecoder::Decode(AVCodecContext* codec_ctx, AVPacket* pkt, AVFrame* frame, AVStream* stream,
                     std::unique_lock<std::mutex>& lock, SwsContext* sws_context,
                     AVFrame* rgba_frame) {

    int ret;
    /* send the packet with the compressed data to the decoder */
    ret = avcodec_send_packet(codec_ctx, pkt);
    if (ret == AVERROR(EAGAIN)) {
        LOGE(TAG,
             "Decode: Receive_frame and send_packet both returned EAGAIN, which is an API violation.");
    } else if (ret < 0) {
        return;
    }

    // Read all the output frames (infile general there may be any number of them)
    while (ret >= 0 && !is_stop_) {
        // For frame, avcodec_receive_frame internally calls each time
        ret = avcodec_receive_frame(codec_ctx, frame);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
            return;
        } else if (ret < 0) {
            return;
        }
        int64_t startTime = GetCurrentMilliTime();
        LOGD(TAG, "decodeStartTime: %ld", startTime);
        // Calculate the timestamp of the currently decoded frame
        auto decode_time_ms = frame->pts * 1000 / stream->time_base.den;
        LOGD(TAG, "decode_time_ms = %ld", decode_time_ms);
        if (decode_time_ms >= time_ms_) {
            LOGD(TAG, "decode decode_time_ms = %ld, time_ms_ = %ld", decode_time_ms, time_ms_);
            last_decode_time_ms_ = decode_time_ms;
            is_seeking_ = false;

            // Data format conversion
            int result = sws_scale(
                    sws_context,
                    (const uint8_t* const*) frame->data, frame->linesize,
                    0, video_height_,
                    rgba_frame->data, rgba_frame->linesize);

            if (result <= 0) {
                LOGE(TAG, "Player Error : data convert fail");
                return;
            }

            // Playing
            result = ANativeWindow_lock(native_window_, &window_buffer_, nullptr);
            if (result < 0) {
                LOGE(TAG, "Player Error : Can not lock native window");
            } else {
                // Draw the image on the interface
                auto bits = (uint8_t*) window_buffer_.bits;
                for (int h = 0; h < video_height_; h++) {
                    memcpy(bits + h * window_buffer_.stride * 4,
                           out_buffer_ + h * rgba_frame->linesize[0],
                           rgba_frame->linesize[0]);
                }
                ANativeWindow_unlockAndPost(native_window_);
            }
            on_decode_frame_(decode_time_ms);
            int64_t endTime = GetCurrentMilliTime();
            LOGD(TAG, "decodeEndTime - decodeStartTime: %ld", endTime - startTime);
            LOGD(TAG, "finish decode frame");
            condition_.wait(lock);
        }
        // Mainly serves to clean up all space data in AVPacket, after cleaning, initialize operations, and set data and size to 0 for convenience in the next call.
        // Release packet reference
        av_packet_unref(pkt);
    }
}

void VideoDecoder::Prepare(ANativeWindow* window) {
    native_window_ = window;
    av_register_all();
    auto av_format_context = avformat_alloc_context();
    avformat_open_input(&av_format_context, path_.c_str(), nullptr, nullptr);
    avformat_find_stream_info(av_format_context, nullptr);
    int video_stream_index = -1;
    for (int i = 0; i < av_format_context->nb_streams; i++) {
        // Find the index of the video media stream
        if (av_format_context->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
            video_stream_index = i;
            LOGD(TAG, "find video stream index = %d", video_stream_index);
            break;
        }
    }

    // Run once
    do {
        if (video_stream_index == -1) {
            codec::LOGE(TAG, "Player Error : Can not find video stream");
            break;
        }
        std::unique_lock<std::mutex> lock(work_queue_mtx);

        // Get the video media stream
        auto stream = av_format_context->streams[video_stream_index];
        // Find the registered decoder
        auto codec = avcodec_find_decoder(stream->codecpar->codec_id);
        // Get the decoder context
        AVCodecContext* codec_ctx = avcodec_alloc_context3(codec);
        auto ret = avcodec_parameters_to_context(codec_ctx, stream->codecpar);

        if (ret >= 0) {
            // Open
            avcodec_open2(codec_ctx, codec, nullptr);
            // The decoder has width and height values only after opening
            video_width_ = codec_ctx->width;
            video_height_ = codec_ctx->height;

            AVFrame* rgba_frame = av_frame_alloc();
            int buffer_size = av_image_get_buffer_size(AV_PIX_FMT_RGBA, video_width_, video_height_,
                                                       1);
            // Allocate memory space for output buffer
            out_buffer_ = (uint8_t*) av_malloc(buffer_size * sizeof(uint8_t));
            av_image_fill_arrays(rgba_frame->data, rgba_frame->linesize, out_buffer_,
                                 AV_PIX_FMT_RGBA,
                                 video_width_, video_height_, 1);

            // Limit the number of pixels in the buffer by setting width and height, rather than the physical display size of the screen.
            // If the buffer does not match the physical display size of the screen, the actual display may be stretched or compressed.
            int result = ANativeWindow_setBuffersGeometry(native_window_, video_width_,
                                                          video_height_, WINDOW_FORMAT_RGBA_8888);
            if (result < 0) {
                LOGE(TAG, "Player Error : Can not set native window buffer");
                avcodec_close(codec_ctx);
                avcodec_free_context(&codec_ctx);
                av_free(out_buffer_);
                break;
            }

            auto frame = av_frame_alloc();
            auto packet = av_packet_alloc();

            struct SwsContext* data_convert_context = sws_getContext(
                    video_width_, video_height_, codec_ctx->pix_fmt,
                    video_width_, video_height_, AV_PIX_FMT_RGBA,
                    SWS_BICUBIC, nullptr, nullptr, nullptr);
            while (!is_stop_) {
                LOGD(TAG, "front seek time_ms_ = %ld, last_decode_time_ms_ = %ld", time_ms_,
                     last_decode_time_ms_);
                if (!is_seeking_ && (time_ms_ > last_decode_time_ms_ + 1000 ||
                                     time_ms_ < last_decode_time_ms_ - 50)) {
                    is_seeking_ = true;
                    LOGD(TAG, "seek frame time_ms_ = %ld， last_decode_time_ms_ = %ld", time_ms_,
                         last_decode_time_ms_);
                    // The timestamp passed in for seeking is the specified frame with the time_base, so it needs to be calculated using times_ms
                    av_seek_frame(av_format_context, video_stream_index,
                                  time_ms_ * stream->time_base.den / 1000, AVSEEK_FLAG_BACKWARD);
                }
                // Read one video frame (a complete frame), obtaining the compressed data for one frame of video, which can then be decoded.
                ret = av_read_frame(av_format_context, packet);
                if (ret < 0) {
                    avcodec_flush_buffers(codec_ctx);
                    av_seek_frame(av_format_context, video_stream_index,
                                  time_ms_ * stream->time_base.den / 1000, AVSEEK_FLAG_BACKWARD);
                    LOGD(TAG, "ret < 0, condition_.wait(lock)");
                    // Prevent decoding the last frame when there is no data left in the video
                    on_decode_frame_(last_decode_time_ms_);
                    condition_.wait(lock);
                }
                if (packet->size) {
                    Decode(codec_ctx, packet, frame, stream, lock, data_convert_context,
                           rgba_frame);
                }
            }
            // Release resources
            sws_freeContext(data_convert_context);
            av_free(out_buffer_);
            av_frame_free(&rgba_frame);
            av_frame_free(&frame);
            av_packet_free(&packet);

        }
        avcodec_close(codec_ctx);
        avcodec_free_context(&codec_ctx);

    } while (false);
    avformat_close_input(&av_format_context);
    avformat_free_context(av_format_context);
    ANativeWindow_release(native_window_);
    delete this;
}

bool VideoDecoder::DecodeFrame(long time_ms) {
    LOGD(TAG, "DecodeFrame time_ms = %ld", time_ms);
    if (last_decode_time_ms_ == time_ms || time_ms_ == time_ms) {
        LOGD(TAG, "DecodeFrame last_decode_time_ms_ == time_ms");
        return false;
    }
    if (last_decode_time_ms_ >= time_ms && last_decode_time_ms_ <= time_ms + 50) {
        return false;
    }
    time_ms_ = time_ms;
    condition_.notify_all();
    return true;
}

void VideoDecoder::Release() {
    is_stop_ = true;
    condition_.notify_all();
}

/**
 * Get the current millisecond-level time
 */
int64_t VideoDecoder::GetCurrentMilliTime(void) {
    struct timeval tv{};
    gettimeofday(&tv, nullptr);
    return tv.tv_sec * 1000.0 + tv.tv_usec / 1000.0;
}

}