opencv 解码记录
解码库使用的时候发现瑞芯微以前做过解码库对ffmpeg和gstreamer的支持
然后最近实在不想再调试Rtsp浪费时间了，就从这中间找了一个比较快的方案
ffmpeg 带硬解码库编译
编译流程参考文献
https://blog.csdn.net/T__zxt/article/details/123424359
编译的ffmpeg是这个版本
https://github.com/jjm2473
安装了下面这些东西：
sudoapt-get-yinstall\
autoconf \
automake \
build-essential \
cmake \
git-core \
libass-dev \
libfreetype6-dev \
libsdl2-dev \
libtool \
libva-dev \
libvdpau-dev \
libvorbis-dev \
libxcb1-dev \
libxcb-shm0-dev \
libxcb-xfixes0-dev \
pkg-config \
texinfo \wget\
zlib1g-dev
编译选项参考的是这哥们的语句：
https://www.reddit.com/r/OrangePI/comments/14f725v/comment/jpcezy2/?context=3
下面这句话，哪个不能用删哪个，一定要有的是 --enable-rkmpp
./configure --enable-nonfree --enable-gpl --enable-version3 --enable-libx264 --enable-libdrm --enable-rkmpp --enable-librtmp --enable-shared --enable-static --enable-librga --enable-libx265 --enable-libmp3lame --enable-libpulse --enable-openssl --enable-libopus --enable-libvorbis
# 我最后用的 应该是sudoapt-get-yinstall autoconf automake build-essential cmake git-core libass-dev libfreetype6-dev libsdl2-dev libtool libva-dev libvdpau-dev libvorbis-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev pkg-config texinfo wget zlib1g-dev
./configure --enable-nonfree --enable-gpl --enable-version3 --enable-libx264 --enable-libdrm --enable-rkmpp --enable-shared --enable-static --enable-librga --enable-libx265 --enable-libpulse --enable-openssl --enable-libvorbis
使用板上编译的时候记得多等一会，有点慢，不要急
编译出来的结果需要使用下面的语句去看ffmpeg是否正常
ffmpeg -decoders|grep h264
如果编译之后，ffmpeg不支持，
修改
sudovim /etc/ld.so.conf
include /etc/ld.so.conf.d/*.conf
/usr/local/lib
打开之前ldd看一眼是不是所有的链接库都找到地方了
ffmpeg-rk-enc-5.1$ ldd ffmpeg
linux-vdso.so.1 (0x0000007fbb328000)
libavdevice.so.59 => /usr/local/lib/libavdevice.so.59 (0x0000007fbb230000)
libavfilter.so.8 => /usr/local/lib/libavfilter.so.8 (0x0000007fbae60000)
libavformat.so.59 => /usr/local/lib/libavformat.so.59 (0x0000007fbabe0000)
libavcodec.so.59 => /usr/local/lib/libavcodec.so.59 (0x0000007fb9ae0000)
libpostproc.so.56 => /usr/local/lib/libpostproc.so.56 (0x0000007fb9ac0000)
libswresample.so.4 => /usr/local/lib/libswresample.so.4 (0x0000007fb9a90000)
libswscale.so.6 => /usr/local/lib/libswscale.so.6 (0x0000007fb9a10000)
libavutil.so.57 => /usr/local/lib/libavutil.so.57 (0x0000007fb9830000)
libm.so.6 => /lib/aarch64-linux-gnu/libm.so.6 (0x0000007fb9790000)
libc.so.6 => /lib/aarch64-linux-gnu/libc.so.6 (0x0000007fb95e0000)
/lib/ld-linux-aarch64.so.1 (0x0000007fbb2ef000)
libdrm.so.2 => /lib/aarch64-linux-gnu/libdrm.so.2 (0x0000007fb95b0000)
libxcb.so.1 => /lib/aarch64-linux-gnu/libxcb.so.1 (0x0000007fb9570000)
libxcb-shm.so.0 => /lib/aarch64-linux-gnu/libxcb-shm.so.0 (0x0000007fb9550000)
libxcb-shape.so.0 => /lib/aarch64-linux-gnu/libxcb-shape.so.0 (0x0000007fb9530000)
libxcb-xfixes.so.0 => /lib/aarch64-linux-gnu/libxcb-xfixes.so.0 (0x0000007fb9510000)
libasound.so.2 => /lib/aarch64-linux-gnu/libasound.so.2 (0x0000007fb93f0000)
libpulse.so.0 => /lib/aarch64-linux-gnu/libpulse.so.0 (0x0000007fb9390000)
libSDL2-2.0.so.0 => /lib/aarch64-linux-gnu/libSDL2-2.0.so.0 (0x0000007fb91f0000)
libsndio.so.7 => /lib/aarch64-linux-gnu/libsndio.so.7 (0x0000007fb91c0000)
libXv.so.1 => /lib/aarch64-linux-gnu/libXv.so.1 (0x0000007fb91a0000)
libX11.so.6 => /lib/aarch64-linux-gnu/libX11.so.6 (0x0000007fb9050000)
libXext.so.6 => /lib/aarch64-linux-gnu/libXext.so.6 (0x0000007fb9020000)
libavrkmpp.so.1 => /usr/local/lib/libavrkmpp.so.1 (0x0000007fb9000000)
libva.so.2 => /lib/aarch64-linux-gnu/libva.so.2 (0x0000007fb8fc0000)
libz.so.1 => /lib/aarch64-linux-gnu/libz.so.1 (0x0000007fb8f90000)
libssl.so.3 => /lib/aarch64-linux-gnu/libssl.so.3 (0x0000007fb8ee0000)
libcrypto.so.3 => /lib/aarch64-linux-gnu/libcrypto.so.3 (0x0000007fb8af0000)
liblzma.so.5 => /lib/aarch64-linux-gnu/liblzma.so.5 (0x0000007fb8ab0000)
librockchip_mpp.so.1 => /lib/aarch64-linux-gnu/librockchip_mpp.so.1 (0x0000007fb88b0000)
libvorbis.so.0 => /lib/aarch64-linux-gnu/libvorbis.so.0 (0x0000007fb8870000)
libvorbisenc.so.2 => /lib/aarch64-linux-gnu/libvorbisenc.so.2 (0x0000007fb87b0000)
libx264.so.163 => /lib/aarch64-linux-gnu/libx264.so.163 (0x0000007fb8560000)
libx265.so.199 => /lib/aarch64-linux-gnu/libx265.so.199 (0x0000007fb82a0000)
librga.so.2 => /lib/aarch64-linux-gnu/librga.so.2 (0x0000007fb8270000)
libva-drm.so.2 => /lib/aarch64-linux-gnu/libva-drm.so.2 (0x0000007fb8250000)
libva-x11.so.2 => /lib/aarch64-linux-gnu/libva-x11.so.2 (0x0000007fb8230000)
libvdpau.so.1 => /lib/aarch64-linux-gnu/libvdpau.so.1 (0x0000007fb8210000)
libXau.so.6 => /lib/aarch64-linux-gnu/libXau.so.6 (0x0000007fb81f0000)
libXdmcp.so.6 => /lib/aarch64-linux-gnu/libXdmcp.so.6 (0x0000007fb81d0000)
libpulsecommon-15.99.so => /usr/lib/aarch64-linux-gnu/pulseaudio/libpulsecommon-15.99.so (0x0000007fb8140000)
libdbus-1.so.3 => /lib/aarch64-linux-gnu/libdbus-1.so.3 (0x0000007fb80e0000)
libXcursor.so.1 => /lib/aarch64-linux-gnu/libXcursor.so.1 (0x0000007fb80c0000)
libXinerama.so.1 => /lib/aarch64-linux-gnu/libXinerama.so.1 (0x0000007fb80a0000)
libXi.so.6 => /lib/aarch64-linux-gnu/libXi.so.6 (0x0000007fb8070000)
libXfixes.so.3 => /lib/aarch64-linux-gnu/libXfixes.so.3 (0x0000007fb8050000)
libXrandr.so.2 => /lib/aarch64-linux-gnu/libXrandr.so.2 (0x0000007fb8030000)
libXss.so.1 => /lib/aarch64-linux-gnu/libXss.so.1 (0x0000007fb8010000)
libXxf86vm.so.1 => /lib/aarch64-linux-gnu/libXxf86vm.so.1 (0x0000007fb7ff0000)
libgbm.so.1 => /lib/aarch64-linux-gnu/libgbm.so.1 (0x0000007fb7fd0000)
libwayland-egl.so.1 => /lib/aarch64-linux-gnu/libwayland-egl.so.1 (0x0000007fb7fb0000)
libwayland-client.so.0 => /lib/aarch64-linux-gnu/libwayland-client.so.0 (0x0000007fb7f90000)
libwayland-cursor.so.0 => /lib/aarch64-linux-gnu/libwayland-cursor.so.0 (0x0000007fb7f70000)
libxkbcommon.so.0 => /lib/aarch64-linux-gnu/libxkbcommon.so.0 (0x0000007fb7f10000)
libdecor-0.so.0 => /lib/aarch64-linux-gnu/libdecor-0.so.0 (0x0000007fb7ef0000)
libbsd.so.0 => /lib/aarch64-linux-gnu/libbsd.so.0 (0x0000007fb7ec0000)
libstdc++.so.6 => /lib/aarch64-linux-gnu/libstdc++.so.6 (0x0000007fb7c90000)
libogg.so.0 => /lib/aarch64-linux-gnu/libogg.so.0 (0x0000007fb7c70000)
libnuma.so.1 => /lib/aarch64-linux-gnu/libnuma.so.1 (0x0000007fb7c40000)
libgcc_s.so.1 => /lib/aarch64-linux-gnu/libgcc_s.so.1 (0x0000007fb7c10000)
libsndfile.so.1 => /lib/aarch64-linux-gnu/libsndfile.so.1 (0x0000007fb7b80000)
libX11-xcb.so.1 => /lib/aarch64-linux-gnu/libX11-xcb.so.1 (0x0000007fb7b60000)
libsystemd.so.0 => /lib/aarch64-linux-gnu/libsystemd.so.0 (0x0000007fb7a80000)
libasyncns.so.0 => /lib/aarch64-linux-gnu/libasyncns.so.0 (0x0000007fb7a60000)
libapparmor.so.1 => /lib/aarch64-linux-gnu/libapparmor.so.1 (0x0000007fb7a30000)
libXrender.so.1 => /lib/aarch64-linux-gnu/libXrender.so.1 (0x0000007fb7a10000)
libwayland-server.so.0 => /lib/aarch64-linux-gnu/libwayland-server.so.0 (0x0000007fb79e0000)
libexpat.so.1 => /lib/aarch64-linux-gnu/libexpat.so.1 (0x0000007fb79a0000)
libffi.so.8 => /lib/aarch64-linux-gnu/libffi.so.8 (0x0000007fb7980000)
libmd.so.0 => /lib/aarch64-linux-gnu/libmd.so.0 (0x0000007fb7960000)
libFLAC.so.8 => /lib/aarch64-linux-gnu/libFLAC.so.8 (0x0000007fb7910000)
libopus.so.0 => /lib/aarch64-linux-gnu/libopus.so.0 (0x0000007fb78a0000)
libzstd.so.1 => /opt/ros/humble/lib/libzstd.so.1 (0x0000007fb7810000)
liblz4.so.1 => /lib/aarch64-linux-gnu/liblz4.so.1 (0x0000007fb77e0000)
libcap.so.2 => /lib/aarch64-linux-gnu/libcap.so.2 (0x0000007fb77c0000)
libgcrypt.so.20 => /lib/aarch64-linux-gnu/libgcrypt.so.20 (0x0000007fb76d0000)
libgpg-error.so.0 => /lib/aarch64-linux-gnu/libgpg-error.so.0 (0x0000007fb7690000)
至此，编译好了一个支持硬件解码的ffmpeg，记得make install ，然后去编译opencv,让opencv支持ffmpeg
opencv编译带硬解码ffmpeg
原来的opencv是这样的：
OpenCV FFmpeg version:
General configuration for OpenCV 4.5.5 =====================================
Version control: unknown
Platform:
Timestamp: 2023-09-25T04:22:20Z
Host: Linux 5.10.110-rockchip-rk3588 aarch64
CMake: 3.22.1
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/gmake
Configuration: Release
CPU/HW features:
Baseline: NEON FP16
C/C++:
Built as dynamic libs?: YES
C++ standard: 11
C++ Compiler: /usr/bin/c++ (ver 11.4.0)
C++ flags (Release): -fsigned-char -W-Wall-Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat-Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3-DNDEBUG-DNDEBUG
C++ flags (Debug): -fsigned-char -W-Wall-Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat-Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -g-O0-DDEBUG-D_DEBUG
C Compiler: /usr/bin/cc
C flags (Release): -fsigned-char -W-Wall-Werror=return-type -Werror=address -Werror=sequence-point -Wformat-Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow-Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -O3-DNDEBUG-DNDEBUG
C flags (Debug): -fsigned-char -W-Wall-Werror=return-type -Werror=address -Werror=sequence-point -Wformat-Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow-Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -g-O0-DDEBUG-D_DEBUG
Linker flags (Release): -Wl,--gc-sections -Wl,--as-needed
Linker flags (Debug): -Wl,--gc-sections -Wl,--as-needed
ccache: NO
Precompiled headers: NO
Extra dependencies: dl m pthread rt
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo python3 stitching ts video videoio
Disabled: world
Disabled by dependency: -
Unavailable: java python2
Applications: tests perf_tests apps
Documentation: NO
Non-free algorithms: NO
GUI: QT5
QT: YES (ver 5.15.3 )
QT OpenGL support: YES (Qt5::OpenGL 5.15.3)
GTK+: YES (ver 3.24.33)
GThread : YES (ver 2.72.4)
GtkGlExt: NO
OpenGL support: YES (/usr/lib/aarch64-linux-gnu/libGL.so /usr/lib/aarch64-linux-gnu/libGLU.so)
VTK support: YES (ver 9.1.0)
Media I/O:
ZLib: /usr/lib/aarch64-linux-gnu/libz.so (ver 1.2.11)
JPEG: /usr/lib/aarch64-linux-gnu/libjpeg.so (ver 80)
WEBP: /usr/lib/aarch64-linux-gnu/libwebp.so (ver encoder: 0x020f)
PNG: /lib/libpng.so (ver 1.6.37)
TIFF: /usr/lib/aarch64-linux-gnu/libtiff.so (ver 42 / 4.3.0)
JPEG 2000: OpenJPEG (ver 2.4.0)
OpenEXR: /usr/lib/aarch64-linux-gnu/libImath-2_5.so /usr/lib/aarch64-linux-gnu/libIlmImf-2_5.so /usr/lib/aarch64-linux-gnu/libIex-2_5.so /usr/lib/aarch64-linux-gnu/libHalf-2_5.so /usr/lib/aarch64-linux-gnu/libIlmThread-2_5.so (ver 2_5)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: YES (2.2.6)
FFMPEG: YES
avcodec: YES (58.134.100)
avformat: YES (58.76.100)
avutil: YES (56.70.100)
swscale: YES (5.9.100)
avresample: NO
GStreamer: YES (1.20.3)
v4l/v4l2: YES (linux/videodev2.h)
Parallel framework: pthreads
Trace: YES (with Intel ITT)
Other third-party libraries:
Lapack: NO
Eigen: YES (ver 3.4.0)
Custom HAL: YES (carotene (ver 0.0.1))
Protobuf: build (3.19.1)
OpenCL: YES (no extra features)
Include path: /home/orangepi/opencv-4.5.5/3rdparty/include/opencl/1.2
Link libraries: Dynamic load
Python 3:
Interpreter: /usr/bin/python3 (ver 3.10.12)
Libraries: /usr/lib/aarch64-linux-gnu/libpython3.10.so (ver 3.10.12)
numpy: /usr/lib/python3/dist-packages/numpy/core/include (ver 1.21.5)install path: lib/python3.10/dist-packages/cv2/python-3.10
Python (for build): /usr/bin/python2.7
Java:
ant: NO
JNI: /usr/lib/jvm/default-java/include /usr/lib/jvm/default-java/include/linux /usr/lib/jvm/default-java/include
Java wrappers: NO
Java tests: NO
Install to: /usr/local
opencv 4.5.5来讲，这个ffmpeg太新了，编译不过。只能以毒攻毒，去下了opencv4.8.0
回头把这个打包上传到csdn资源，防止它小更新不能用
4.8.0是编译通过的
一样也是板端编译，cmake-gui配置,然后去build文件夹下面 make make install
参考文献：
https://blog.csdn.net/Flag_ing/article/details/109508374
注意 ，如果使用qt，一定要把qt勾选，否则在qt里运行会报错
还有opencl他也不是自动勾选的
其他的应该随意
然后去创建工程使用、测试opencv是不是能正常用
测试代码
// RTSP Server
#include "xop/RtspServer.h"
#include "net/Timer.h"
#include <thread>
#include <memory>
#include <iostream>
#include <string>
#include <opencv2/opencv.hpp>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
// 编码库
#include <encoder.h>
// 解码库
#include <decoder.h>
// 海康拉流库
#include "HCNetSDK.h"
#include <chrono>
#include "yolo.h"
// 查看264 二进制 文件
#include <sstream>
#include <fstream>
using namespace std;
using namespace cv;
// 定义一个缓冲池结构体
struct Buffer {
Mat buf1;
Mat buf2;
};
// 定义互斥锁
std::mutex mymutex;
Buffer matBuf;
VideoCapture videocapture;
int captureOpen = 0;
/**
* @brief 读图
*
* @return Mat
*/
Mat captureThread()
{
string rtspIN = "rtsp://admin:[email protected]:554/h264/ch0/main/av_stream";
if (captureOpen == 0 )
{
videocapture.open(rtspIN,CAP_FFMPEG);
captureOpen = 1;
//打开图像
// capture.open(url);
}
while (1)
{
//加锁
mymutex.lock();
// buf2->buf1
if(matBuf.buf1.empty())
videocapture.read(matBuf.buf1);
else if(matBuf.buf2.empty())
videocapture.read(matBuf.buf2);
else{
matBuf.buf1 = matBuf.buf2;
videocapture.read(matBuf.buf2);
}
// 没有读到数据 网络问题 重启rtsp
if(matBuf.buf1.empty()){
videocapture.release();
videocapture.open(rtspIN,CAP_FFMPEG);
}
//读图成功
// imgready = true;
//解锁
mymutex.unlock();
xop::Timer::Sleep(10);
}
}
void writeCharPointerToFile(const char* data, std::size_t size, const std::string& filename) {
// 打开文件
std::ofstream file(filename, ios::binary);
// 检查文件是否成功打开
if (!file.is_open()) {
std::cerr << "无法打开文件: " << filename << std::endl;
return;
}
// 写入数据
file.write(data, size);
// 关闭文件
file.close();
}
bool IsKeyFrame(const char* data, uint32_t size)
{
if (size > 4) {
//0x67:sps ,0x65:IDR, 0x6: SEI
if (data[4] == 0x67 || data[4] == 0x65 ||
data[4] == 0x6 || data[4] == 0x27) {
return true;
}
}
return false;
}
// encoder e ;
void SendFrameThread(xop::RtspServer* rtsp_server, xop::MediaSessionId session_id, int& clients);
int main(int argc, char **argv)
{
// 读图线程
thread t1(captureThread);
int clients = 1;
std::string ip = "0.0.0.0";
std::string rtsp_url = "rtsp://127.0.0.1:5514/live";
// e.init();
std::shared_ptr<xop::EventLoop> event_loop(new xop::EventLoop());
std::shared_ptr<xop::RtspServer> server = xop::RtspServer::Create(event_loop.get());
if (!server->Start(ip, 5514)) {
return -1;
}
#ifdef AUTH_CONFIG
server->SetAuthConfig("-_-", "admin", "12345");
#endif
xop::MediaSession *session = xop::MediaSession::CreateNew("live"); // url: rtsp://ip/live
session->AddSource(xop::channel_0, xop::H264Source::CreateNew());
session->AddSource(xop::channel_1, xop::AACSource::CreateNew(44100,2));
// session->startMulticast(); /* 开启组播(ip,端口随机生成), 默认使用 RTP_OVER_UDP, RTP_OVER_RTSP */
session->AddNotifyConnectedCallback([] (xop::MediaSessionId sessionId, std::string peer_ip, uint16_t peer_port){
printf("RTSP client connect, ip=%s, port=%hu \n", peer_ip.c_str(), peer_port);
});
session->AddNotifyDisconnectedCallback([](xop::MediaSessionId sessionId, std::string peer_ip, uint16_t peer_port) {
printf("RTSP client disconnect, ip=%s, port=%hu \n", peer_ip.c_str(), peer_port);
});
std::cout << "URL: " << rtsp_url << std::endl;
xop::MediaSessionId session_id = server->AddSession(session);
//server->removeMeidaSession(session_id); /* 取消会话, 接口线程安全 */
std::thread thread(SendFrameThread, server.get(), session_id, std::ref(clients));
thread.detach();
while(1) {
xop::Timer::Sleep(100);
}
getchar();
return 0;
}
void SendFrameThread(xop::RtspServer* rtsp_server, xop::MediaSessionId session_id, int& clients)
{
encoder e;
// decoder d;
// cv::VideoCapture *videocapture = new cv::VideoCapture(0);
// std::string rtspIN = "rtsp://admin:[email protected]:554/h264/ch1/sub/av_stream";
// yolo处理
// char* modelname = "/home/orangepi/code/realsense/cap2/yolov5s-640-640.rknn";
// yolo yolo5;
// yolo5.load_model(modelname);
// yolo5.model_init();
// decoder相关 结果回传
// d.init();
std::vector<cv::Mat> resultArray;
int lenofmat = 0;
// encoder相关 内存拷贝
int size = 0;
char* buffer ;
cv::Mat colorBar;
int i = 0;
while(1)
{
if(clients > 0) /* 会话有客户端在线, 发送音视频数据 */
{
{
xop::AVFrame videoFrame = {0};
// opencv 拿图 后续需要优化
auto start_time = std::chrono::high_resolution_clock::now();
// videocapture->read(colorBar); // 拿图
while(matBuf.buf1.empty());
mymutex.lock();
colorBar = matBuf.buf1;
matBuf.buf1 = matBuf.buf2;
matBuf.buf2.release();
mymutex.unlock();
auto end_time1 = std::chrono::high_resolution_clock::now();
// d.poststream("264stream pointer",lenofmat,resultArray);
// printf("width is %d, height is %d",colorBar.rows,colorBar.cols);
// yolo 处理
// yolo5.load_Mat(colorBar);
// yolo5.run();
// colorBar = yolo5.getPicResult();
auto end_time2 = std::chrono::high_resolution_clock::now();
if(0==i){
// 第一帧有sps信息 给他两帧拼一起
char *buffer1;
int size1;
e.init(buffer1,size1);
videoFrame.size = size1;
e.postAframe(colorBar,buffer,size);
videoFrame.size += size;
videoFrame.buffer.reset(new uint8_t[videoFrame.size]);
memcpy(videoFrame.buffer.get(), buffer1, size1);
memcpy(videoFrame.buffer.get()+size1, buffer, size);
i++;
}
else{
e.postAframe(colorBar,buffer,size);
videoFrame.size = size; // 视频帧大小
videoFrame.buffer.reset(new uint8_t[videoFrame.size]);
memcpy(videoFrame.buffer.get(), buffer, videoFrame.size);
}
auto end_time3 = std::chrono::high_resolution_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end_time1 - start_time);
cout<<"===============================A==frame================================================="<<endl;
cout << "decode mat took: " << duration.count() <<"ms\r\n";
duration = std::chrono::duration_cast<std::chrono::milliseconds>(end_time2 - end_time1);
cout << "rknn took: " << duration.count() <<"ms\r\n";
duration = std::chrono::duration_cast<std::chrono::milliseconds>(end_time3 - end_time2);
cout << "encode took: " << duration.count() <<"ms\r\n";
videoFrame.type = IsKeyFrame(buffer, size) ? xop::VIDEO_FRAME_I : xop::VIDEO_FRAME_P;
// videoFrame.type = 0; // 建议确定帧类型。I帧(xop::VIDEO_FRAME_I) P帧(xop::VIDEO_FRAME_P)
videoFrame.timestamp = xop::H264Source::GetTimestamp(); // 时间戳, 建议使用编码器提供的时间戳
// writeCharPointerToFile((char *)videoFrame.buffer.get(), videoFrame.size, "filename.txt");
rtsp_server->PushFrame(session_id, xop::channel_0, videoFrame); //送到服务器进行转发, 接口线程安全
/*
//获取一帧 H264, 打包
xop::AVFrame videoFrame = {0};
videoFrame.type = 0; // 建议确定帧类型。I帧(xop::VIDEO_FRAME_I) P帧(xop::VIDEO_FRAME_P)
videoFrame.size = video frame size; // 视频帧大小
videoFrame.timestamp = xop::H264Source::GetTimestamp(); // 时间戳, 建议使用编码器提供的时间戳
videoFrame.buffer.reset(new uint8_t[videoFrame.size]);
memcpy(videoFrame.buffer.get(), video frame data, videoFrame.size);
rtsp_server->PushFrame(session_id, xop::channel_0, videoFrame); //送到服务器进行转发, 接口线程安全
*/
}
{
/*
//获取一帧 AAC, 打包
xop::AVFrame audioFrame = {0};
audioFrame.type = xop::AUDIO_FRAME;
audioFrame.size = audio frame size; /* 音频帧大小
audioFrame.timestamp = xop::AACSource::GetTimestamp(44100); // 时间戳
audioFrame.buffer.reset(new uint8_t[audioFrame.size]);
memcpy(audioFrame.buffer.get(), audio frame data, audioFrame.size);
rtsp_server->PushFrame(session_id, xop::channel_1, audioFrame); // 送到服务器进行转发, 接口线程安全
*/
}
}
// xop::Timer::Sleep(20); /* 实际使用需要根据帧率计算延时! */
}
videocapture.release();
e.deinit((MPP_RET)0);
// d.deinit();
// yolo5.deinit();
}
至此 一帧图片怎么都能推出去了
本文转载自: https://blog.csdn.net/qq_31764341/article/details/135138205
版权归原作者 define_mine 所有， 如有侵权，请联系我们删除。
版权归原作者 define_mine 所有， 如有侵权，请联系我们删除。