Update cmsisnn_demo.c

APP_Framework/Applications/knowing_app/cmsis_5_demo/cmsisnn-cifar10/demo/cmsisnn_demo.c

@@ -6,6 +6,7 @@
 
 const char *cifar10_label[] = {"Plane", "Car", "Bird", "Cat", "Deer", "Dog", "Frog", "Horse", "Ship", "Truck"};
 
+// 获取最高预测结果的索引
 int get_top_prediction(q7_t *predictions)
 {
   int max_ind = 0;
@@ -21,6 +22,7 @@ int get_top_prediction(q7_t *predictions)
   return max_ind;
 }
 
+// 进行模型推理
 int cmsisnn_inference(uint8_t *input_data)
 {
   q7_t output_data[10];
@@ -38,6 +40,7 @@ typedef struct
   uint16_t wfbuf;
 } IODEV;
 
+// JPEG解码回调函数，用于读取数据
 unsigned int in_func_cmsisnn(JDEC *jd, uint8_t *buff, unsigned int nbyte)
 {
   IODEV *dev = (IODEV *)jd->device;
@@ -52,6 +55,7 @@ unsigned int in_func_cmsisnn(JDEC *jd, uint8_t *buff, unsigned int nbyte)
   }
 }
 
+// JPEG解码回调函数，用于输出解码后的数据
 int out_func_cmsisnn(JDEC *jd, void *bitmap, JRECT *rect)
 {
   IODEV *dev = (IODEV *)jd->device;
@@ -77,6 +81,7 @@ int out_func_cmsisnn(JDEC *jd, void *bitmap, JRECT *rect)
   return 1;
 }
 
+// CIFAR-10图像解码和推理的示例代码
 int cmsisnn_demo(int argc, char *argv[])
 {
   void *work;
@@ -90,6 +95,7 @@ int cmsisnn_demo(int argc, char *argv[])
     return -1;
   }
 
+  // 打开JPEG文件
   devid.fp = fopen(argv[1], "r+");
   if (!devid.fp)
   {
@@ -97,6 +103,7 @@ int cmsisnn_demo(int argc, char *argv[])
     return -1;
   }
 
+  // 分配工作内存
   work = malloc(WORK_POOL_SIZE);
   if (work == NULL)
   {
@@ -105,11 +112,13 @@ int cmsisnn_demo(int argc, char *argv[])
     goto __exit;
   }
 
+  // 准备JPEG解码器
   res = jd_prepare(&jdec, in_func_cmsisnn, work, WORK_POOL_SIZE, &devid);
   if (res == JDR_OK)
   {
     printf("Image dimensions: %u by %u. %u bytes used.\n", jdec.width, jdec.height, 3100 - jdec.sz_pool);
 
+    // 分配解码后的RGB像素数据缓存
     devid.fbuf = malloc(3 * jdec.width * jdec.height);
     if (devid.fbuf == NULL)
     {
@@ -119,6 +128,7 @@ int cmsisnn_demo(int argc, char *argv[])
     }
     devid.wfbuf = jdec.width;
 
+    // 解码JPEG并输出到缓存
     res = jd_decomp(&jdec, out_func_cmsisnn, 0);
     if (res == JDR_OK)
     {
@@ -129,6 +139,7 @@ int cmsisnn_demo(int argc, char *argv[])
       printf("Failed to decompress: rc=%d\n", res);
     }
 
+    // 进行图像推理
     cmsisnn_inference(devid.fbuf);
 
     if (devid.fbuf != NULL)