# decoder_demo

**Repository Path**: yszs/decoder_demo

## Basic Information

- **Project Name**: decoder_demo
- **Description**: decoder_demo
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2025-06-26
- **Last Updated**: 2025-07-10

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

```shell


./configure \
    --prefix=/usr/local \
    --enable-nonfree \
    --enable-gpl \
    --enable-cuda-nvcc \
    --enable-cuda \
    --enable-cuvid \
    --enable-nvenc \
    --enable-libnpp \
    --extra-cflags="-I/usr/local/cuda/include" \
    --extra-ldflags="-L/usr/local/cuda/lib64 -ldl" \
    --ld="g++" \
    --extra-libs="-lpthread -lm" \
    --enable-libx264 \
    --enable-libx265 \
    --enable-libfdk-aac \
    --enable-libvpx \
    --enable-libmp3lame \
    --enable-gnutls \
    --enable-libopus \
    --enable-shared \
    --disable-static \
    --enable-pthreads 
```


```shell

git submodule add https://gitee.com/xia-chu/ZLToolKit.git submodule/ZLToolKit
git submodule add https://gitee.com/arm-depend/json.git submodule/json
git submodule add -b v1.x --force https://gitee.com/yszs/spdlog.git submodule/spdlog


```


```shell
 apt install -y \
  build-essential cmake git libgtk2.0-dev pkg-config \
    python3-dev python3-numpy \
  libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev \
  libdc1394-22-dev libv4l-dev unzi
```


```shell

cmake -D CMAKE_BUILD_TYPE=RELEASE \
      -D CMAKE_INSTALL_PREFIX=/usr/local \
      -D WITH_CUDA=ON \
      -D CUDA_ARCH_BIN="8.6" \
      -D WITH_CUDNN=ON \
      -D OPENCV_DNN_CUDA=ON \
      -D ENABLE_FAST_MATH=1 \
      -D CUDA_FAST_MATH=1 \
      -D WITH_CUBLAS=1 \
      -D CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda \
      -D OPENCV_EXTRA_MODULES_PATH=/opt/opencv_contrib/modules \
      -D INSTALL_PYTHON_EXAMPLES=OFF \
      -D INSTALL_C_EXAMPLES=OFF \
      -D BUILD_EXAMPLES=OFF \
      -D BUILD_opencv_cudacodec=OFF \
      -D WITH_FFMPEG=OFF \
      ..

```


 ### 优化方向
  * 无锁队列
  * 绑定gpu，decode、gpuMat和hw_ctx都指定gpu
  * gpu内yuv转rgb
  * 同一个gpu上多线程解码共用hw_device_ctx
  * 减少memcpy和device2host操作
  * ffmepg设置nobuffer,read之前先flush