nvidia打开摄像头推rtsp流c++代码
时间: 2023-09-16 20:05:40 浏览: 343
### 回答1:
以下是一个基本的示例代码,可以使用NVIDIA Jetson平台上的GStreamer库打开摄像头,并将其转换为RTSP流。这个示例代码假设您使用的是Jetson Nano平台。
```python
import gi
gi.require_version('Gst', '1.0')
from gi.repository import GObject, Gst
import sys
# 初始化Gst
Gst.init(None)
# 创建Gst管道
pipeline = Gst.Pipeline()
# 创建Gst元素
camsrc = Gst.ElementFactory.make('nvarguscamerasrc', 'camsrc')
caps = Gst.ElementFactory.make('capsfilter', 'caps')
caps.set_property('caps', Gst.Caps.from_string('video/x-raw(memory:NVMM), width=1920, height=1080, framerate=30/1, format=NV12'))
queue = Gst.ElementFactory.make('queue', 'queue')
nvvidconv = Gst.ElementFactory.make('nvvidconv', 'nvvidconv')
capsfilter = Gst.ElementFactory.make('capsfilter', 'capsfilter')
capsfilter.set_property('caps', Gst.Caps.from_string('video/x-raw, width=1920, height=1080, framerate=30/1'))
x264enc = Gst.ElementFactory.make('nvv4l2h264enc', 'x264enc')
rtph264pay = Gst.ElementFactory.make('rtph264pay', 'rtph264pay')
udpsink = Gst.ElementFactory.make('udpsink', 'udpsink')
# 设置元素属性
udpsink.set_property('host', '127.0.0.1')
udpsink.set_property('port', 5000)
# 将元素添加到管道中
pipeline.add(camsrc)
pipeline.add(caps)
pipeline.add(queue)
pipeline.add(nvvidconv)
pipeline.add(capsfilter)
pipeline.add(x264enc)
pipeline.add(rtph264pay)
pipeline.add(udpsink)
# 连接元素
camsrc.link(caps)
caps.link(queue)
queue.link(nvvidconv)
nvvidconv.link(capsfilter)
capsfilter.link(x264enc)
x264enc.link(rtph264pay)
rtph264pay.link(udpsink)
# 启动管道
pipeline.set_state(Gst.State.PLAYING)
# 运行
try:
while True:
pass
except KeyboardInterrupt:
# 捕获键盘中断信号,停止管道
pipeline.set_state(Gst.State.NULL)
```
这个代码将打开Jetson Nano上的CSI摄像头,并将其转换为H.264格式的RTSP流,该流可以通过UDP在本地主机上的端口5000上进行传输。请注意,您可能需要根据您的环境调整代码中的一些参数,例如视频的分辨率、帧率、格式、传输协议等。
### 回答2:
要在NVIDIA的平台上打开摄像头并推送RTSP流,可以使用GStreamer库和相关的API。以下是一个示例代码来实现这个功能:
1.首先,需要安装GStreamer库:
```shell
sudo apt-get update
sudo apt-get install libgstreamer1.0-0 gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav
```
2.在代码中引入相关的库文件:
```c++
#include <gst/gst.h>
```
3.初始化GStreamer库:
```c++
gst_init(NULL, NULL);
```
4.创建GStreamer的元素(element):
```c++
GstElement *pipeline = gst_pipeline_new("camera_pipeline");
GstElement *source = gst_element_factory_make("v4l2src", "camera_source");
GstElement *capsfilter = gst_element_factory_make("capsfilter", "camera_caps");
GstElement *encoder = gst_element_factory_make("x264enc", "camera_encoder");
GstElement *rtph264pay = gst_element_factory_make("rtph264pay", "camera_rtp");
GstElement *sink = gst_element_factory_make("udpsink", "camera_sink");
```
5.设置元素的属性:
```c++
g_object_set(G_OBJECT(source), "device", "/dev/video0", NULL);
g_object_set(G_OBJECT(capsfilter), "caps", gst_caps_from_string("video/x-raw,width=1280,height=720,framerate=30/1"), NULL);
g_object_set(G_OBJECT(sink), "host", "127.0.0.1", NULL);
g_object_set(G_OBJECT(sink), "port", 8554, NULL);
```
6.将元素添加到管道中:
```c++
gst_bin_add_many(GST_BIN(pipeline), source, capsfilter, encoder, rtph264pay, sink, NULL);
```
7.连接元素:
```c++
gst_element_link_many(source, capsfilter, encoder, rtph264pay, sink, NULL);
```
8.启动管道:
```c++
gst_element_set_state(pipeline, GST_STATE_PLAYING);
```
9.进入主循环(main loop):
```c++
GMainLoop *loop = g_main_loop_new(NULL, FALSE);
g_main_loop_run(loop);
```
10.在需要停止推送时,通过以下代码来停止管道:
```c++
gst_element_set_state(pipeline, GST_STATE_NULL);
gst_object_unref(GST_OBJECT(pipeline));
```
请注意,这只是一个简单的示例代码,具体的实现可能会根据摄像头和平台的不同而有所不同。您可能需要根据您的具体情况进行适当的更改和调整。此外,还需考虑相关的权限和配置设置,比如授予摄像头访问权限等。
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