HLS Video Player on C++ with ffmpeg and SDL2

hls-video-player.cpp

/*
# How to Run HLS Video Player Program Using FFmpeg and SDL

## 1. Install Dependencies

Make sure you have FFmpeg and SDL2 installed on your system. Here’s how to install both on various operating systems:

### On Ubuntu (or Debian-based Linux distributions)

```bash
sudo apt update
sudo apt install libavcodec-dev libavformat-dev libswscale-dev libavutil-dev libsdl2-dev
```

### On macOS
```bash
brew install ffmpeg sdl2
```

## 2. Create Source File
Create a file with a .cpp extension, for example, hls_video_player.cpp, and copy the updated code into this file.

## 3. Comple the code
### On Linux/MacOS
```bash
g++ -o hls_video_player hls_video_player.cpp -lavformat -lavcodec -lavutil -lswscale -lSDL2
```
in my case, i use this command 
```bash
g++ -o videoplayer sample.cpp -I/opt/homebrew/Cellar/ffmpeg/7.1/include -I/opt/homebrew/Cellar/sdl2/2.30.8/include -L/opt/homebrew/Cellar/ffmpeg/7.1/lib -L/opt/homebrew/Cellar/sdl2/2.30.8/lib -lavformat -lavcodec -lavutil -lswscale -lSDL2
```

### On Windows
```bash
g++ -o hls_video_player.exe hls_video_player.cpp -lavformat -lavcodec -lavutil -lswscale -lSDL2main -lSDL2
```
 */

extern "C" {
    #include <libavcodec/avcodec.h>
    #include <libavformat/avformat.h>
    #include <libswscale/swscale.h>
    #include <libavutil/imgutils.h>
    #include <SDL2/SDL.h>
}

int main(int argc, char* argv[]) {
    // URL untuk stream HLS
    const char* videoUrl = "https://test-streams.mux.dev/x36xhzz/x36xhzz.m3u8";

    // Inisialisasi FFmpeg
    avformat_network_init();

    // Membuka file atau stream
    AVFormatContext* formatContext = avformat_alloc_context();
    if (avformat_open_input(&formatContext, videoUrl, NULL, NULL) != 0) {
        printf("Tidak dapat membuka video.\n");
        return -1;
    }

    // Mendapatkan informasi stream
    if (avformat_find_stream_info(formatContext, NULL) < 0) {
        printf("Tidak dapat mendapatkan informasi stream.\n");
        return -1;
    }

    // Mencari stream video
    int videoStreamIndex = -1;
    for (unsigned int i = 0; i < formatContext->nb_streams; i++) {
        if (formatContext->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
            videoStreamIndex = i;
            break;
        }
    }
    if (videoStreamIndex == -1) {
        printf("Stream video tidak ditemukan.\n");
        return -1;
    }

    // Mendapatkan codec dan membuka decoder
    AVCodecParameters* codecParameters = formatContext->streams[videoStreamIndex]->codecpar;
    const AVCodec* codec = avcodec_find_decoder(codecParameters->codec_id);
    AVCodecContext* codecContext = avcodec_alloc_context3(codec);
    avcodec_parameters_to_context(codecContext, codecParameters);
    if (avcodec_open2(codecContext, codec, NULL) < 0) {
        printf("Tidak dapat membuka codec.\n");
        return -1;
    }

    // Inisialisasi SDL
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        printf("Tidak dapat menginisialisasi SDL - %s\n", SDL_GetError());
        return -1;
    }

    SDL_Window* window = SDL_CreateWindow("Video Player HLS", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, codecContext->width, codecContext->height, SDL_WINDOW_OPENGL);
    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, 0);
    SDL_Texture* texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_YV12, SDL_TEXTUREACCESS_STREAMING, codecContext->width, codecContext->height);

    // Konversi frame
    struct SwsContext* swsContext = sws_getContext(codecContext->width, codecContext->height, codecContext->pix_fmt,
                                                   codecContext->width, codecContext->height, AV_PIX_FMT_YUV420P, SWS_BILINEAR, NULL, NULL, NULL);

    // Frame untuk video
    AVFrame* frame = av_frame_alloc();
    AVFrame* frameYUV = av_frame_alloc();
    uint8_t* buffer = (uint8_t*)av_malloc(av_image_get_buffer_size(AV_PIX_FMT_YUV420P, codecContext->width, codecContext->height, 1));
    av_image_fill_arrays(frameYUV->data, frameYUV->linesize, buffer, AV_PIX_FMT_YUV420P, codecContext->width, codecContext->height, 1);

    // Packet untuk menerima data dari decoder
    AVPacket packet;

    while (av_read_frame(formatContext, &packet) >= 0) {
        if (packet.stream_index == videoStreamIndex) {
            if (avcodec_send_packet(codecContext, &packet) == 0) {
                if (avcodec_receive_frame(codecContext, frame) == 0) {
                    // Konversi frame dari format asli ke YUV
                    sws_scale(swsContext, frame->data, frame->linesize, 0, codecContext->height, frameYUV->data, frameYUV->linesize);

                    // Update texture dengan frame YUV
                    SDL_UpdateYUVTexture(texture, NULL,
                                         frameYUV->data[0], frameYUV->linesize[0],
                                         frameYUV->data[1], frameYUV->linesize[1],
                                         frameYUV->data[2], frameYUV->linesize[2]);

                    // Render frame
                    SDL_RenderClear(renderer);
                    SDL_RenderCopy(renderer, texture, NULL, NULL);
                    SDL_RenderPresent(renderer);

                    SDL_Event event;
                    while (SDL_PollEvent(&event)) {
                        if (event.type == SDL_QUIT) {
                            SDL_DestroyTexture(texture);
                            SDL_DestroyRenderer(renderer);
                            SDL_DestroyWindow(window);
                            SDL_Quit();
                            return 0;
                        }
                    }
                }
            }
        }
        av_packet_unref(&packet);
    }

    // Membersihkan
    av_free(buffer);
    av_frame_free(&frame);
    av_frame_free(&frameYUV);
    avcodec_free_context(&codecContext);
    avformat_close_input(&formatContext);

    SDL_DestroyTexture(texture);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}