Added support for OPI5 build

tmp/opi_rtsp/src-opi5/image_utils.h

@@ -0,0 +1,73 @@
+#ifndef _RKNN_MODEL_ZOO_IMAGE_UTILS_H_
+#define _RKNN_MODEL_ZOO_IMAGE_UTILS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "common.h"
+
+/**
+ * @brief LetterBox
+ * 
+ */
+typedef struct {
+    int x_pad;
+    int y_pad;
+    float scale;
+} letterbox_t;
+
+/**
+ * @brief Read image file (support png/jpeg/bmp)
+ * 
+ * @param path [in] Image path
+ * @param image [out] Read image
+ * @return int 0: success; -1: error
+ */
+int read_image(const char* path, image_buffer_t* image);
+
+/**
+ * @brief Write image file (support jpg/png)
+ * 
+ * @param path [in] Image path
+ * @param image [in] Image for write (only support IMAGE_FORMAT_RGB888)
+ * @return int 0: success; -1: error
+ */
+int write_image(const char* path, const image_buffer_t* image);
+
+/**
+ * @brief Convert image for resize and pixel format change
+ * 
+ * @param src_image [in] Source Image
+ * @param dst_image [out] Target Image
+ * @param src_box [in] Crop rectangle on source image
+ * @param dst_box [in] Crop rectangle on target image
+ * @param color [in] Pading color if dst_box can not fill target image
+ * @return int 
+ */
+int convert_image(image_buffer_t* src_image, image_buffer_t* dst_image, image_rect_t* src_box, image_rect_t* dst_box, char color);
+
+/**
+ * @brief Convert image with letterbox
+ * 
+ * @param src_image [in] Source Image
+ * @param dst_image [out] Target Image
+ * @param letterbox [out] Letterbox
+ * @param color [in] Fill color on target image
+ * @return int 
+ */
+int convert_image_with_letterbox(image_buffer_t* src_image, image_buffer_t* dst_image, letterbox_t* letterbox, char color);
+
+/**
+ * @brief Get the image size
+ * 
+ * @param image [in] Image
+ * @return int image size
+ */
+int get_image_size(image_buffer_t* image);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif // _RKNN_MODEL_ZOO_IMAGE_UTILS_H_