feat(isp): add gamma correction driver to ISP

2024-07-22 22:08:02 +08:00
parent 2884ce0eac
commit f2d131aae4
12 changed files with 473 additions and 539 deletions
@@ -35,7 +35,7 @@ typedef struct {
 *       but it only takes effect until `esp_isp_ccm_enable` is called
 *
 * @param[in] proc    Processor handle
- * @param[in] ccm_cfg CCM configurations, set NULL to de-configure the ISP CCM
+ * @param[in] ccm_cfg CCM configurations
 *
 * @return
 *        - ESP_OK                 On success
@@ -0,0 +1,76 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "esp_err.h"
+#include "driver/isp_types.h"
+#include "hal/color_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief ISP gamma Correction configuration
+ *
+ * @note This function is allowed to be called before or after esp_isp_gamma_enable(),
+ *       but it only takes effect until esp_isp_gamma_enable() is called
+ *
+ * @param[in] proc      Processor handle
+ * @param[in] component One of the R/G/B components, color_component_t
+ * @param[in] pts       Group of points that describe the desired gamma correction curve;<br>
+ *                      Passing in NULL to reset to default parameters (no correction)
+ *
+ * @return
+ *        - ESP_OK                 On success
+ *        - ESP_ERR_INVALID_ARG    If the combination of arguments is invalid
+ */
+esp_err_t esp_isp_gamma_configure(isp_proc_handle_t proc, color_component_t component, const isp_gamma_curve_points_t *pts);
+
+/**
+ * @brief Enable ISP gamma function
+ *
+ * @param[in] proc  Processor handle
+ *
+ * @return
+ *         - ESP_OK                On success
+ *         - ESP_ERR_INVALID_ARG   If the combination of arguments is invalid.
+ */
+esp_err_t esp_isp_gamma_enable(isp_proc_handle_t proc);
+
+/**
+ * @brief Disable ISP gamma function
+ *
+ * @param[in] proc  Processor handle
+ *
+ * @return
+ *         - ESP_OK                On success
+ *         - ESP_ERR_INVALID_ARG   If the combination of arguments is invalid.
+ */
+esp_err_t esp_isp_gamma_disable(isp_proc_handle_t proc);
+
+/**
+ * @brief Helper function to fill the isp_gamma_curve_points_t structure, giving the mathematical function of the desired gamma correction curve
+ *
+ * @note The raw values are sampled with equal spacing
+ *
+ * @param[in] gamma_correction_operator The desired gamma correction curve y = f(x).<br>
+ *                                      x is the raw value, in [0, 256]; y is the gamma-corrected value, in [0, 256];<br>
+ *                                      y can be equal to 256 only if x = 256. For any other x value, y should be always less than 256.
+ * @param[out] pts Pointer to the to-be-filled isp_gamma_curve_points_t structure
+ *
+ * @return
+ *         - ESP_OK                On success
+ *         - ESP_ERR_INVALID_ARG   If the combination of arguments is invalid.
+ */
+esp_err_t esp_isp_gamma_fill_curve_points(uint32_t (* gamma_correction_operator)(uint32_t), isp_gamma_curve_points_t *pts);
+
+#ifdef __cplusplus
+}
+#endif