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cxh 2025-09-22 09:10:17 +08:00
parent 345fdc5f46
commit 8e99be6c35
1 changed files with 9 additions and 17 deletions
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26
src/rtsp_manager.cpp
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@ -25,29 +25,21 @@ void RTSPManager::init()
// 创建 media factory
GstRTSPMediaFactory *RTSPManager::create_media_factory(const Camera &cam)
{
// 输出分辨率直接用相机原始分辨率
int out_width = cam.width;
int out_height = cam.height;
// 如果是 1280x960，则裁剪到 1280x720
std::string videocrop_str;
if (cam.width == 1280 && cam.height == 960)
{
out_height = 720;
int crop_top = (960 - 720) / 2;
videocrop_str = " ! videocrop top=" + std::to_string(crop_top) + " bottom=" + std::to_string(crop_top);
}
// 构建 pipeline
std::string launch_str =
"( v4l2src device=" + cam.device +
" ! video/x-raw,format=NV12,width=" + std::to_string(cam.width) +
",height=" + std::to_string(cam.height) +
" ! video/x-raw,format=NV12,width=" + std::to_string(out_width) +
",height=" + std::to_string(out_height) +
",framerate=" + std::to_string(cam.fps) + "/1"
" ! queue max-size-buffers=8 leaky=2" +
videocrop_str +
" ! queue max-size-buffers=8 leaky=2"
" ! mpph264enc"
" ! h264parse"
" ! rtph264pay name=pay0 pt=96 )";
" ! queue max-size-buffers=2 leaky=downstream"
" ! mpph264enc bps=2000000 gop=" +
std::to_string(cam.fps) + " b_frame=0"
" ! h264parse"
" ! rtph264pay name=pay0 pt=96 )";
GstRTSPMediaFactory *factory = gst_rtsp_media_factory_new();
gst_rtsp_media_factory_set_launch(factory, launch_str.c_str());