change(isp): make wbg standalone

components/esp_driver_isp/include/driver/isp_wbg.h

@@ -0,0 +1,81 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include "esp_err.h"
+#include "driver/isp_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*---------------------------------------------------------------
+                    WBG (White Balance Gain)
+---------------------------------------------------------------*/
+/**
+ * @brief ISP BLC configurations
+ */
+typedef struct {
+    //for future proof
+} esp_isp_wbg_config_t;
+
+/**
+ * @brief ISP WBG configuration
+ *
+ * @note After calling this API, WBG doesn't take into effect until `esp_isp_wbg_enable` is called
+ *
+ * @param[in] isp_proc    Processor handle
+ * @param[in] config      WBG configurations
+ *
+ * @return
+ *        - ESP_OK                 On success
+ *        - ESP_ERR_INVALID_STATE  Not allowed to be called under current state
+ *        - ESP_ERR_INVALID_ARG    If the combination of arguments is invalid
+ *        - ESP_ERR_NOT_SUPPORTED  Not supported
+ */
+esp_err_t esp_isp_wbg_configure(isp_proc_handle_t isp_proc, const esp_isp_wbg_config_t *config);
+
+/**
+ * @brief Enable ISP WBG function
+ *
+ * @param[in] isp_proc  Processor handle
+ *
+ * @return
+ *         - ESP_OK                On success
+ *         - ESP_ERR_INVALID_ARG   If the combination of arguments is invalid.
+ *         - ESP_ERR_INVALID_STATE Driver state is invalid.
+ */
+esp_err_t esp_isp_wbg_enable(isp_proc_handle_t isp_proc);
+
+/**
+ * @brief Set AWB white balance gain
+ *
+ * @param[in] isp_proc  Processor handle
+ * @param[in] gain      WBG white balance gain
+ * @return
+ *         - ESP_OK                On success
+ *         - ESP_ERR_INVALID_ARG   Null pointer
+ *         - ESP_ERR_INVALID_STATE Driver state is invalid.
+ */
+esp_err_t esp_isp_wbg_set_wb_gain(isp_proc_handle_t isp_proc, isp_wbg_gain_t gain);
+
+/**
+ * @brief Disable ISP WBG function
+ *
+ * @param[in] isp_proc  Processor handle
+ *
+ * @return
+ *         - ESP_OK                On success
+ *         - ESP_ERR_INVALID_ARG   If the combination of arguments is invalid.
+ *         - ESP_ERR_INVALID_STATE Driver state is invalid.
+ */
+esp_err_t esp_isp_wbg_disable(isp_proc_handle_t isp_proc);
+
+#ifdef __cplusplus
+}
+#endif