mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
synced 2025-05-03 22:17:07 +08:00
317 lines
9.5 KiB
C
317 lines
9.5 KiB
C
/**
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******************************************************************************
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* @file LibJPEG/LibJPEG_Encoding/Src/main.c
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* @author MCD Application Team
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* @brief Main program body
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* This sample code shows how to compress BMP file to JPEG file.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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FATFS SDFatFs; /* File system object for SD card logical drive */
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FIL MyFile, MyFile1; /* File objects */
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char SDPath[4]; /* SD card logical drive path */
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RGB_typedef *RGB_matrix;
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uint8_t _aucLine[1024];
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uint32_t line_counter = 0, bytesread;
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uint16_t Xpos = 0;
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uint16_t Ypos = 0;
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/* Private function prototypes -----------------------------------------------*/
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static void SystemClock_Config(void);
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static uint8_t Jpeg_CallbackFunction(uint8_t* Row, uint32_t DataLength);
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static void LCD_Config(void);
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static void Error_Handler(void);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program
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* @param None
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* @retval None
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*/
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int main(void)
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{
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/* STM32F4xx HAL library initialization:
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- Configure the Flash prefetch, instruction and Data caches
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- Configure the Systick to generate an interrupt each 1 msec
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- Set NVIC Group Priority to 4
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- Global MSP (MCU Support Package) initialization
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*/
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HAL_Init();
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/* Configure the system clock to 180 MHz */
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SystemClock_Config();
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/* Configure LED3 */
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BSP_LED_Init(LED3);
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/*##-1- LCD Configuration ##################################################*/
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LCD_Config();
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/*##-2- Link the micro SD disk I/O driver ##################################*/
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if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0)
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{
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/*##-3- Register the file system object to the FatFs module ##############*/
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if(f_mount(&SDFatFs, (TCHAR const*)SDPath, 0) == FR_OK)
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{
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/*##-4- Create and Open a new jpg image file with write access #########*/
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if(f_open(&MyFile1, "image.jpg", FA_CREATE_ALWAYS | FA_WRITE) == FR_OK)
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{
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/*##-5- Open the BMP image with read access ##########################*/
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if(f_open(&MyFile, "image.bmp", FA_READ) == FR_OK)
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{
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/*##-6- Jpeg encoding ##############################################*/
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jpeg_encode(&MyFile, &MyFile1, IMAGE_WIDTH, IMAGE_HEIGHT, IMAGE_QUALITY, _aucLine);
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/* Close the BMP and JPEG files */
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f_close(&MyFile1);
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f_close(&MyFile);
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/*##-7- Jpeg decoding ##############################################*/
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/* Open the BMP file for read */
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if(f_open(&MyFile1, "image.jpg", FA_READ) == FR_OK)
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{
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/* Jpeg Decoding for display to LCD */
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jpeg_decode(&MyFile1, IMAGE_WIDTH, _aucLine, Jpeg_CallbackFunction);
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/* Close the BMP file */
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f_close(&MyFile1);
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}
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else
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{
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Error_Handler();
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}
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}
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else
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{
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Error_Handler();
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}
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}
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else
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{
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Error_Handler();
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}
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}
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else
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{
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Error_Handler();
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}
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}
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/* Infinite loop */
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while (1)
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{
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}
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}
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/**
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* @brief LCD Configuration.
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* @retval None
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*/
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static void LCD_Config(void)
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{
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uint8_t lcd_status = LCD_OK;
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/* LCD DSI initialization */
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lcd_status = BSP_LCD_Init();
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if(lcd_status != LCD_OK)
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{
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Error_Handler();
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}
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BSP_LCD_LayerDefaultInit(0, LCD_FB_START_ADDRESS);
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BSP_LCD_SelectLayer(0);
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/* Clear the LCD Background layer */
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BSP_LCD_Clear(LCD_COLOR_WHITE);
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BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
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/* Clear the LCD */
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BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
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BSP_LCD_Clear(LCD_COLOR_WHITE);
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/* Set the LCD Text Color */
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BSP_LCD_SetTextColor(LCD_COLOR_DARKBLUE);
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/* Display LCD messages */
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BSP_LCD_DisplayStringAt(0, 430, (uint8_t *)"Application LibJPEG_Encoding", CENTER_MODE);
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/* Compute centered position to draw on screen the decoded pixels */
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Xpos = (uint16_t)((BSP_LCD_GetXSize() - IMAGE_WIDTH) / 2);
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Ypos = (uint16_t)((BSP_LCD_GetYSize() - IMAGE_HEIGHT) / 2);
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}
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/**
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* @brief Copy decompressed data to display buffer.
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* @param Row: Output row buffer
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* @param DataLength: Row width in output buffer
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* @retval None
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*/
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static uint8_t Jpeg_CallbackFunction(uint8_t* Row, uint32_t DataLength)
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{
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uint32_t i = 0;
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RGB_matrix = (RGB_typedef*)Row;
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uint32_t ARGB8888Buffer[IMAGE_WIDTH];
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#ifdef SWAP_RB
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for(i = 0; i < IMAGE_WIDTH; i++)
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{
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ARGB8888Buffer[i] = (uint32_t)
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(
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0xFF000000 |
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(((uint32_t)(RGB_matrix[i].B) & 0x000000FF) >> 0) |
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(((uint32_t)(RGB_matrix[i].G) & 0x000000FF) << 8) |
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(((uint32_t)(RGB_matrix[i].R) & 0x000000FF) << 16)
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);
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BSP_LCD_DrawPixel((i + Xpos), (line_counter + Ypos), ARGB8888Buffer[i]);
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}
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#else
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for(i = 0; i < IMAGE_WIDTH; i++)
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{
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ARGB8888Buffer[i] = (uint32_t)
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(
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0xFF000000 |
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(((uint32_t)(RGB_matrix[i].R) & 0x000000FF) >> 0) |
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(((uint32_t)(RGB_matrix[i].G) & 0x000000FF) << 8) |
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(((uint32_t)(RGB_matrix[i].B) & 0x000000FF) << 16)
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);
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BSP_LCD_DrawPixel((i + Xpos), (line_counter + Ypos), ARGB8888Buffer[i]);
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}
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#endif
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line_counter++;
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return 0;
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}
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/**
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* @brief System Clock Configuration
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* The system Clock is configured as follow :
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 180000000
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* HCLK(Hz) = 180000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 4
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* APB2 Prescaler = 2
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* HSE Frequency(Hz) = 8000000
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* PLL_M = 8
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* PLL_N = 360
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* PLL_P = 2
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* PLL_Q = 7
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* PLL_R = 6
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* VDD(V) = 3.3
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* Main regulator output voltage = Scale1 mode
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* Flash Latency(WS) = 5
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* @param None
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* @retval None
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*/
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static void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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HAL_StatusTypeDef ret = HAL_OK;
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/* Enable Power Control clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* The voltage scaling allows optimizing the power consumption when the device is
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clocked below the maximum system frequency, to update the voltage scaling value
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regarding system frequency refer to product datasheet. */
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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/* Enable HSE Oscillator and activate PLL with HSE as source */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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#if defined(USE_STM32469I_DISCO_REVA)
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RCC_OscInitStruct.PLL.PLLM = 25;
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#else
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RCC_OscInitStruct.PLL.PLLM = 8;
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#endif /* USE_STM32469I_DISCO_REVA */
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RCC_OscInitStruct.PLL.PLLN = 360;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 7;
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RCC_OscInitStruct.PLL.PLLR = 6;
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ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
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if(ret != HAL_OK)
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{
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while(1) { ; }
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}
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/* Activate the OverDrive to reach the 180 MHz Frequency */
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ret = HAL_PWREx_EnableOverDrive();
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if(ret != HAL_OK)
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{
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while(1) { ; }
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}
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
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ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
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if(ret != HAL_OK)
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{
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while(1) { ; }
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}
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}
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/**
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* @brief This function is executed in case of error occurrence.
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* @param None
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* @retval None
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*/
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static void Error_Handler(void)
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{
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/* Turn LED3 on */
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BSP_LED_On(LED3);
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while(1)
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{
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}
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t* file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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