feat(isp): added lsc feature

components/esp_driver_isp/include/driver/isp_lsc.h

@@ -0,0 +1,90 @@
+/*
+ * SPDX-FileCopyrightText: 2024 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
+
+/**
+ * @brief LSC Gain array
+ */
+typedef struct {
+    isp_lsc_gain_t *gain_r;     ///< Gain for R channel
+    isp_lsc_gain_t *gain_gr;    ///< Gain for GR channel
+    isp_lsc_gain_t *gain_gb;    ///< Gain for GB channel
+    isp_lsc_gain_t *gain_b;     ///< Gain for B channel
+} esp_isp_lsc_gain_array_t;
+
+/**
+ * @brief ISP LSC configurations
+ */
+typedef struct {
+    esp_isp_lsc_gain_array_t *gain_array;    ///< Gain array
+} esp_isp_lsc_config_t;
+
+/**
+ * @brief Helper function to allocate gain array for LSC
+ *
+ * @param[in] proc                         Processor handle
+ * @param[in] gain_array                   Gain array to be allocated
+ * @param[out] out_array_size_per_channel  Array size
+ *
+ * @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_NO_MEM         Out of memory
+ */
+esp_err_t esp_isp_lsc_allocate_gain_array(isp_proc_handle_t isp_proc, esp_isp_lsc_gain_array_t *gain_array, size_t *out_array_size_per_channel);
+
+/**
+ * @brief ISP LSC configuration
+ *
+ * @note After calling this API, LSC doesn't take into effect until `esp_isp_lsc_enable` is called
+ *
+ * @param[in] proc    Processor handle
+ * @param[in] config  LSC 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_t esp_isp_lsc_configure(isp_proc_handle_t isp_proc, const esp_isp_lsc_config_t *config);
+
+/**
+ * @brief Enable ISP LSC function
+ *
+ * @param[in] 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_lsc_enable(isp_proc_handle_t isp_proc);
+
+/**
+ * @brief Disable ISP LSC function
+ *
+ * @param[in] 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_lsc_disable(isp_proc_handle_t isp_proc);
+
+#ifdef __cplusplus
+}
+#endif