Method Init

src/render/plugins/ffmpeg_encoder/ffmpeg_encoder.cpp:24–146

    }

    bool FFmpegEncoder::Init(const EncoderConfig& config, const std::string& monitor_name) {
        InitLog();
        encoder_config_ = config;
        auto encoder_id = config.codec_type == EVideoCodecType::kHEVC ? AV_CODEC_ID_HEVC : AV_CODEC_ID_H264;
        const char* codec_name = nullptr;
        if (EVideoCodecType::kHEVC == config.codec_type) {
            if (EHardwareEncoder::kNvEnc == encoder_config_.Hardware && plugin_->IsHardwareEnabled()) {
                codec_name = "hevc_nvenc";
                display_encoder_name_ = "F_NVENC";
            }
            // FFmpeg's implementation is so bad.
            // else if (EHardwareEncoder::kAmf == encoder_config_.Hardware && plugin_->IsHardwareEnabled()) {
            //     codec_name = "hevc_amf";
            //     display_encoder_name_ = "F_AMF";
            // }
            else {
                codec_name = "libx265";
                display_encoder_name_ = "S/W";
            }
        }
        else if (EVideoCodecType::kH264 == config.codec_type) {
            if (EHardwareEncoder::kNvEnc == encoder_config_.Hardware && plugin_->IsHardwareEnabled()) {
                codec_name = "h264_nvenc";
                display_encoder_name_ = "F_NVENC";
            }
            // FFmpeg's implementation is so bad.
            // else if (EHardwareEncoder::kAmf == encoder_config_.Hardware && plugin_->IsHardwareEnabled()) {
            //     codec_name = "h264_amf";
            //     display_encoder_name_ = "F_AMF";
            // }
            else {
                codec_name = "libx264";
                display_encoder_name_ = "S/W";
            }
        }
        const AVCodec* encoder = avcodec_find_encoder_by_name(codec_name);
        if (nullptr == encoder) {
            LOGE("Could not find encoder for:{}", codec_name);
            return false;
        }

        codec_ctx_ = avcodec_alloc_context3(encoder);
        if (!codec_ctx_) {
            LOGE("avcodec_alloc_context3 error!");
            return false;
        }

        if (encoder_config_.fps <= 0) {
            encoder_config_.fps = 60;
        }
        if (encoder_config_.bitrate < 1000000) {
            encoder_config_.bitrate = 1000000;
        }

        codec_ctx_->width = encoder_config_.encode_width;
        codec_ctx_->height = encoder_config_.encode_height;
        codec_ctx_->time_base = { 1, encoder_config_.fps };
        codec_ctx_->framerate = { encoder_config_.fps, 1 };