[update]

llm-camera add -O2 flage.
Output the image background as black.

Author: dianjixz

projects/llm_framework/main_camera/SConstruct

@@ -17,7 +17,7 @@ LDFLAGS = []
 LINK_SEARCH_PATH = []
 STATIC_FILES = []
 
-DEFINITIONS += ['-std=c++17']
+DEFINITIONS += ['-std=c++17', '-O2']
 LDFLAGS+=['-Wl,-rpath=/opt/m5stack/lib', '-Wl,-rpath=/usr/local/m5stack/lib', '-Wl,-rpath=/usr/local/m5stack/lib/gcc-10.3', '-Wl,-rpath=/opt/lib', '-Wl,-rpath=/opt/usr/lib', '-Wl,-rpath=./']
 # INCLUDE += [ADir('../include'), ADir('../include/cppzmq'), ADir('../include/libzmq')]
 LINK_SEARCH_PATH += [ADir('../static_lib')]

projects/llm_framework/main_camera/src/main.cpp

@@ -132,7 +132,7 @@ class llm_task {
             return true;
         }
         enstream_ = (response_format_.find("stream") != std::string::npos);
-        yuv_dist_ = cv::Mat(frame_height_, frame_width_, CV_8UC2);
+        yuv_dist_ = cv::Mat(frame_height_, frame_width_, CV_8UC2, cv::Scalar(0, 128));
         if(devname_.find("/dev/video") != std::string::npos){
             hal_camera_open = camera_open;
             hal_camera_close = camera_close;