RK3399上实现视频(MIPI CSI)摄像头获取转至OPENCV

最新推荐文章于 2025-11-11 17:16:30 发布

原创

最新推荐文章于 2025-11-11 17:16:30 发布 · 4.1k 阅读

20 ·

CC 4.0 BY-SA版权

文章标签：

#gstreamer #Opencv #rk3399

本文分享了一段使用GStreamer进行音视频处理的代码实例，详细展示了如何搭建管道、配置元素、处理错误消息以及从应用sink中获取和处理缓冲区。代码适用于Jetson TX2和RK平台，实现了视频源捕获、格式转换、视频编码和文件输出等功能。

应上次有留言朋友的要求，我把部分代码帖出来：

头文件：

#include <gst/gst.h>
#include <gst/app/gstappsrc.h>
#include <gst/app/gstappsink.h>
 
#include <glib-2.0/glib.h>
#include "gdk-pixbuf-2.0/gdk-pixbuf/gdk-pixbuf.h"
 
#include "../defines.h"
 
#ifndef GSTCODE_H
#define GSTCODE_H
 
 
#ifdef __JETSON_TX2__
    #define VIDEOSRC            "nvarguscamerasrc"
    #define VIDEOTYPE           "NV12"
    #define VIDEOCONVERT        "nvvidconv"
    #define VIDEOSINK           "nvoverlaysink"
    #define VIDEOSRCCAPS        "video/x-raw(memory:NVMM)"
    #define VIDEOENCODER        "nvv4l2h264enc"
#else
    #define VIDEOSRC            "rkisp"
    #define VIDEOTYPE           "NV12"
    #define VIDEOCONVERT        "videoconvert"
    #define VIDEOSINK           "rkximagesink"
    #define VIDEOSRCCAPS        "video/x-raw"
    #define VIDEOENCODER        "nvv4l2h264enc"
#endif
#define FILESINK                "filesink"
 
typedef struct {
    GstPipeline *pipeline;
    GstElement   *src;
    GstElement  *srcconvert;
    GstCaps     *caps;
    GstElement  *tee;
        //
    GstElement  *queue;
    GstElement  *convert;
    GstElement  *videosink;
        //
    GstElement  *appqueue;
    GstElement  *appconvert;
    GstCaps     *appcaps;
    GstElement  *appsink;
        //
    GMainLoop   *loop;
    guint       sourceid;
}gst_app_t;
 
extern gst_app_t gst_app;
extern gst_app_t *app;
 
void init_gst_elements(int argc, char *argv[]);
 
void terminal_gst_element();
 
class gstcode
{
public:
    gstcode();
};
 
#endif // GSTCODE_H

程序源文件：

#include "gstcode.h"
 
#define CVWIN                   "cvwindows"
 
gst_app_t gst_app;
gst_app_t *app = &gst_app;
 
gstcode::gstcode()
{
 
}
 
static int idx = 0;
 
static gboolean bus_callback(GstBus *bus, GstMessage *message, gpointer *ptr)
{
    gst_app_t *app = (gst_app_t*)ptr;
 
    switch(GST_MESSAGE_TYPE(message)){
 
        case GST_MESSAGE_ERROR:{
                gchar *debug;
                GError *err;
 
                gst_message_parse_error(message, &err, &debug);
                g_print("Error %s\n", err->message);
                g_error_free(err);
                g_free(debug);
                g_main_loop_quit(app->loop);
            }
            break;
 
        case GST_MESSAGE_WARNING:{
                gchar *debug;
                G

最低0.47元/天解锁文章