kopia lustrzana https://github.com/espressif/esp-idf
109 wiersze
3.7 KiB
C
109 wiersze
3.7 KiB
C
/*
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* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*******************************************************************************
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* NOTICE
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* The HAL is not public api, don't use in application code.
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* See readme.md in hal/include/hal/readme.md
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******************************************************************************/
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#pragma once
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#include <stdint.h>
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#include "hal/jpeg_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct jpeg_dev_t *jpeg_soc_handle_t; // JPEG SOC layer handle
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/**
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* Context that should be maintained by both the driver and the HAL
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*/
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typedef struct {
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jpeg_soc_handle_t dev; // JPEG SOC layer handle (i.e. register base address)
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} jpeg_hal_context_t;
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/**
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* @brief Initialize the JPEG codec HAL driver
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*
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* @param hal: JPEG codec HAL context
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*/
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void jpeg_hal_init(jpeg_hal_context_t *hal);
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/**
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* @brief Deinitialize the JPEG codec HAL driver
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*
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* @param hal: JPEG codec HAL context
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*/
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void jpeg_hal_deinit(jpeg_hal_context_t *hal);
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/**
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* @brief Function pointer typedef for configuring DHT tables in JPEG decoding.
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*
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* This function pointer typedef represents a callback function that can be used
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* to configure the DHT (Huffman) tables in the JPEG decoding process. It takes
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* as input a JPEG HAL context, as well as pointers to arrays representing the
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* minimum codes, bit lengths, and Huffman codes for the DHT tables.
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*
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* @param hal The JPEG HAL context.
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* @param huffbits Pointer to the array of bit lengths for the DHT tables.
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* @param huffcode Pointer to the array of Huffman codes for the DHT tables.
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*/
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typedef void (*jpeg_config_dht_table_t)(jpeg_hal_context_t *hal, uint8_t *huffbits, uint8_t *huffcode, uint32_t *tmp_huff);
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/**
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* @brief Array of function pointers for configuring DHT tables in JPEG decoding.
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*
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* This two-dimensional array represents a collection of function pointers that
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* can be used to configure the DHT (Huffman) tables in the JPEG decoding process.
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*/
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extern jpeg_config_dht_table_t dht_func[DHT_TC_NUM][DHT_TH_NUM];
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/**
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* Typedef for a function pointer to configure frame information in JPEG.
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*
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* This function is used to configure frame information in JPEG hardware.
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*
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* @param hw The JPEG SOC handle.
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* @param identifier The identifier of the frame.
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* @param horizontal_factor The horizontal factor for chroma subsampling.
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* @param vertical_factor The vertical factor for chroma subsampling.
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* @param qun_table_id The quantization table ID.
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*/
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typedef void (*jpeg_config_frame_info_t)(jpeg_soc_handle_t hw, uint8_t identifier, uint8_t horizontal_factor, uint8_t vertical_factor, uint8_t qun_table_id);
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/**
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* Array of function pointers to configure frame information in JPEG.
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*
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* This array holds function pointers to configure frame information in JPEG hardware.
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* Each element corresponds to a specific component number.
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*/
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extern jpeg_config_frame_info_t sof_func[JPEG_COMPONENT_NUMBER_MAX];
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/**
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* Typedef for a function pointer to configure quantization coefficients in JPEG.
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*
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* This function is used to configure quantization coefficients in JPEG hardware.
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*
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* @param hw The JPEG SOC handle.
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* @param quantization_table Pointer to the quantization table.
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*/
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typedef void (*jpeg_config_quantization_coefficient_t)(jpeg_soc_handle_t hw, uint32_t *quantization_table);
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/**
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* Array of function pointers to configure quantization coefficients in JPEG.
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*
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* This array holds function pointers to configure quantization coefficients in JPEG hardware.
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* Each element corresponds to a specific component number.
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*/
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extern jpeg_config_quantization_coefficient_t dqt_func[JPEG_COMPONENT_NUMBER_MAX];
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#ifdef __cplusplus
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}
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#endif
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