Src/camera.c (BSP)

Outline

Includes

#include "main.h"

#include "stm32469i_eval_audio.h"

Private define

#define CAMERA_STATUS_TEXT_POS

#define CAMERA_RES_INDEX_MIN

#define CAMERA_RES_INDEX_MAX

#define CAMERA_CONTRAST_MIN

#define CAMERA_CONTRAST_MAX

#define CAMERA_BRIGHTNESS_MIN

#define CAMERA_BRIGHTNESS_MAX

Private variables

JoyState

CameraResX

CameraResY

CameraResIndex

CameraChangeResolutionAsked

CameraFrameBufferInitComplete

CameraFrameBufferInitError

offset_cam

offset_lcd

display_line_counter

display_rotated_line_counter

refresh_authorized

special_effect

color_effect

contrast

brightness

Camera_AllowDma2dCopyCamFrmBuffToLcdFrmBuff

Private function prototypes

Camera_demo()

Camera_SetHint()

Camera_FrameBuffer_Init_TransferComplete(DMA2D_HandleTypeDef *)

Camera_FrameBuffer_Init_TransferError(DMA2D_HandleTypeDef *)

CameraFrameBufferRgb565_Init(uint32_t, uint32_t, uint32_t)

ConvertCameraLineRgb565ToLcdLineARGB8888(void *, void *, uint32_t)

ConvertCameraLineRgb565ToLcdColumnARGB8888(void *, void *, uint32_t, uint32_t)

BSP_CAMERA_LineEventCallback()

Camera_LineEventCallbackNoRotation()

Camera_LineEventCallbackRotation90()

Files

CodeScopeSTM32 Libraries and SamplesBSPSrc/camera.c

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/** ****************************************************************************** * @file BSP/Src/camera.c * @author MCD Application Team * @brief This example code shows how to use the camera feature in the * stm32446e_eval driver ****************************************************************************** * @attention * * Copyright (c) 2017 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include "stm32469i_eval_audio.h" /** @addtogroup STM32F4xx_HAL_Examples * @{ */ /** @addtogroup BSP * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Camera Frame Buffer address */ #define CAMERA_STATUS_TEXT_POS 30 /* Number of lines from bottom of screen */ #define CAMERA_RES_INDEX_MIN CAMERA_R160x120 #define CAMERA_RES_INDEX_MAX CAMERA_R640x480 #define CAMERA_CONTRAST_MIN CAMERA_CONTRAST_LEVEL0 #define CAMERA_CONTRAST_MAX CAMERA_CONTRAST_LEVEL4 #define CAMERA_BRIGHTNESS_MIN CAMERA_BRIGHTNESS_LEVEL0 #define CAMERA_BRIGHTNESS_MAX CAMERA_BRIGHTNESS_LEVEL4 /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ static JOYState_TypeDef JoyState = JOY_NONE; static uint32_t CameraResX; static uint32_t CameraResY; static uint32_t CameraResIndex; static uint32_t CameraChangeResolutionAsked; static volatile uint32_t CameraFrameBufferInitComplete = 0; static volatile uint32_t CameraFrameBufferInitError = 0; static uint32_t offset_cam = 0; static uint32_t offset_lcd = 0; static uint32_t display_line_counter = 0; static uint32_t display_rotated_line_counter = 0; /* used when rotating by 90 degrees image from camera only */ static uint32_t refresh_authorized = 0; static uint32_t special_effect = CAMERA_BLACK_WHITE; /* No special effect applied */ static uint32_t color_effect = CAMERA_BLACK_WHITE_NORMAL; static uint32_t contrast = CAMERA_CONTRAST_LEVEL2; /* Mid-level brightness */ static uint32_t brightness = CAMERA_BRIGHTNESS_LEVEL2; /* Mid-level contrast */ /* Global variables */ volatile uint32_t Camera_AllowDma2dCopyCamFrmBuffToLcdFrmBuff = 0; /* Imported global variables */ extern DMA2D_HandleTypeDef hdma2d_eval; /* DMA2D handle variable */ /* Private function prototypes -----------------------------------------------*/ static void Camera_SetHint(void); static void ConvertCameraLineRgb565ToLcdLineARGB8888(void *pSrc, void *pDst, uint32_t xSize); static void ConvertCameraLineRgb565ToLcdColumnARGB8888(void *pSrc, void *pDst, uint32_t xSize, uint32_t lineStridePixels); static void Camera_FrameBuffer_Init_TransferComplete(DMA2D_HandleTypeDef *hdma2d); static void Camera_FrameBuffer_Init_TransferError(DMA2D_HandleTypeDef *hdma2d); static uint32_t CameraFrameBufferRgb565_Init(uint32_t sizeX, uint32_t sizeY, uint32_t argb8888_Value); void BSP_CAMERA_LineEventCallback(void); static void Camera_LineEventCallbackNoRotation(void); static void Camera_LineEventCallbackRotation90(void); /* Private functions ---------------------------------------------------------*/ /** * @brief Camera demo * @param None * @retval None */ void Camera_demo (void) { uint8_t status = 0; uint32_t exit = 0; uint32_t camera_status = CAMERA_OK; uint32_t argb8888_Value = 0x00556677; Camera_SetHint(); /* Activate joystick as used for contrast, brightness and visual effect settings */ /* on image from camera sensor */ status = BSP_JOY_Init(JOY_MODE_GPIO); if (status != IO_OK) { BSP_LCD_SetBackColor(LCD_COLOR_WHITE); BSP_LCD_SetTextColor(LCD_COLOR_RED); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)"ERROR", CENTER_MODE); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS - 15, (uint8_t *)"Joystick cannot be initialized", CENTER_MODE); } /*## Camera Initialization and start capture ############################*/ BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)"Wait for camera initialization...", CENTER_MODE); CameraResIndex = CAMERA_R160x120; /* Set QQVGA default resolution */ CameraChangeResolutionAsked = 1; CameraResX = CAMERA_QQVGA_RES_X; CameraResY = CAMERA_QQVGA_RES_Y; /* Infinite loop */ while (exit == 0) { if (CameraChangeResolutionAsked) /* A camera change resolution has been asked */ { CameraChangeResolutionAsked = 0; if (CameraResIndex > CAMERA_R160x120) { /* If camera stream already started, it has to be stopped before reconfiguration */ /* Stop camera stream */ refresh_authorized = 0; camera_status = BSP_CAMERA_Stop(); BSP_TEST_APPLI_ASSERT(camera_status != CAMERA_OK); /* Clear screen */ Camera_SetHint(); BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)"Wait for camera initialization...", CENTER_MODE); } BSP_LCD_SetBackColor(LCD_COLOR_WHITE); BSP_LCD_SetTextColor(LCD_COLOR_BLUE); switch (CameraResIndex) { case CAMERA_R160x120: CameraResX = CAMERA_QQVGA_RES_X; CameraResY = CAMERA_QQVGA_RES_Y; /* Initialize the Camera */ camera_status = BSP_CAMERA_Init(RESOLUTION_R160x120); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" QQVGA camera stream ", CENTER_MODE); break; case CAMERA_R320x240: CameraResX = CAMERA_QVGA_RES_X; CameraResY = CAMERA_QVGA_RES_Y; /* Initialize the Camera */ camera_status = BSP_CAMERA_Init(RESOLUTION_R320x240); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" QVGA camera stream ", CENTER_MODE); break; case CAMERA_R480x272: CameraResX = CAMERA_480x272_RES_X; CameraResY = CAMERA_480x272_RES_Y; /* Initialize the Camera */ camera_status = BSP_CAMERA_Init(RESOLUTION_R480x272); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" 480x272 camera stream ", CENTER_MODE); break; case CAMERA_R640x480: CameraResX = CAMERA_VGA_RES_X; CameraResY = CAMERA_VGA_RES_Y; /* Initialize the Camera */ camera_status = BSP_CAMERA_Init(RESOLUTION_R640x480); BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" VGA camera stream ", CENTER_MODE); break; default : break; } if (camera_status != CAMERA_OK) { BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS - 15, (uint8_t *)" CAMERA INIT ERROR ", CENTER_MODE); } offset_cam = 0; offset_lcd = 0; display_line_counter = 0; display_rotated_line_counter = 0; special_effect = CAMERA_BLACK_WHITE; /* No special effect applied */ color_effect = CAMERA_BLACK_WHITE_NORMAL; contrast = CAMERA_CONTRAST_LEVEL2; /* Mid-level brightness */ brightness = CAMERA_BRIGHTNESS_LEVEL2; /* Mid-level contrast */ refresh_authorized = 1; CameraFrameBufferInitComplete = 0; CameraFrameBufferInitError = 0; if(CameraResIndex == CAMERA_R640x480) { /* Clear first the LCD */ BSP_LCD_Clear(LCD_COLOR_WHITE); } /* Init or Re-Init Camera frame buffer by using DMA2D engine in mode Register to Memory */ camera_status = CameraFrameBufferRgb565_Init(CAMERA_VGA_RES_X, CAMERA_VGA_RES_Y, argb8888_Value); BSP_TEST_APPLI_ASSERT(camera_status != CAMERA_OK); /* Wait end of DMA2D operation of error : via IT callback update */ while((CameraFrameBufferInitComplete == 0) && (CameraFrameBufferInitError == 0)) {;} /* Assert if error : no transfer complete */ BSP_TEST_APPLI_ASSERT(CameraFrameBufferInitComplete != 1); /* Start / Restart camera stream */ BSP_CAMERA_ContinuousStart((uint8_t *)CAMERA_FB_START_ADDR); /* Allow DMA2D copy from Camera frame buffer to LCD Frame buffer location */ Camera_AllowDma2dCopyCamFrmBuffToLcdFrmBuff = 1; } /* (CameraResIndex != CameraCurrentResIndex) */ /* Get the Joystick State */ JoyState = BSP_JOY_GetState(); switch (JoyState) { case JOY_UP: if (brightness < CAMERA_BRIGHTNESS_MAX) { brightness++; } else { JoyState = JOY_NONE; /* Cancel brightness change */ } break; case JOY_DOWN: if (brightness > CAMERA_BRIGHTNESS_MIN) { brightness--; } else { JoyState = JOY_NONE; /* Cancel brightness change */ } break; case JOY_LEFT: if (contrast > CAMERA_CONTRAST_MIN) { contrast--; } else { JoyState = JOY_NONE; /* Cancel contrast change */ } break; case JOY_RIGHT: if (contrast < CAMERA_CONTRAST_MAX) { contrast++; } else { JoyState = JOY_NONE; /* Cancel contrast change */ } break; case JOY_SEL: switch (special_effect) { case CAMERA_BLACK_WHITE : if (color_effect < CAMERA_BLACK_WHITE_NORMAL) { /* From BW effect to another BW effect */ color_effect++; } else { /* From BW or none effect to color effect */ special_effect = CAMERA_COLOR_EFFECT; color_effect = CAMERA_COLOR_EFFECT_ANTIQUE; } break; case CAMERA_COLOR_EFFECT : if (color_effect < CAMERA_COLOR_EFFECT_RED) { /* From color effect to another color effect */ color_effect++; } else { /* From color effect to BW effect */ special_effect = CAMERA_BLACK_WHITE; color_effect = CAMERA_BLACK_WHITE_BW; } break; default : /* None effect */ special_effect = CAMERA_BLACK_WHITE; color_effect = CAMERA_BLACK_WHITE_NORMAL; break; } break; default: break; } if ((JoyState == JOY_UP) || (JoyState == JOY_DOWN) || (JoyState == JOY_LEFT) || (JoyState == JOY_RIGHT)) { /* A brightness change has been asked */ BSP_CAMERA_ContrastBrightnessConfig(contrast, brightness); if ((JoyState == JOY_UP) || (JoyState == JOY_DOWN)) { BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" Brightness change ", CENTER_MODE); } else { BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" Contrast change ", CENTER_MODE); } } if (JoyState == JOY_SEL) { /* A color effect change has been asked */ switch (special_effect) { case CAMERA_BLACK_WHITE : BSP_CAMERA_BlackWhiteConfig(color_effect); switch (color_effect) { case CAMERA_BLACK_WHITE_NORMAL : BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" No effect applied ", CENTER_MODE); break; case CAMERA_BLACK_WHITE_BW : BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" Black and white effect applied ", CENTER_MODE); break; case CAMERA_BLACK_WHITE_NEGATIVE : BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" Negative effect applied ", CENTER_MODE); break; case CAMERA_BLACK_WHITE_BW_NEGATIVE : BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" BW negative effect applied ", CENTER_MODE); break; } break; case CAMERA_COLOR_EFFECT : BSP_CAMERA_ColorEffectConfig(color_effect); switch (color_effect) { case CAMERA_COLOR_EFFECT_ANTIQUE : BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" Sepia color effect applied ", CENTER_MODE); break; case CAMERA_COLOR_EFFECT_BLUE : BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" Blue color effect applied ", CENTER_MODE); break; case CAMERA_COLOR_EFFECT_GREEN : BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" Green color effect applied ", CENTER_MODE); break; case CAMERA_COLOR_EFFECT_RED : BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - CAMERA_STATUS_TEXT_POS, (uint8_t *)" Red color effect applied ", CENTER_MODE); break; } break; } } /* Toggle LED4 */ BSP_LED_Toggle(LED3); /* Insert 100 ms delay */ HAL_Delay(100); /* Toggle LED2 */ BSP_LED_Toggle(LED2); /* Insert 100 ms delay */ HAL_Delay(100); if (CheckForUserInput() > 0) { if (CameraResIndex < CAMERA_RES_INDEX_MAX) { CameraResIndex++; /* Switch to higher resolution */ CameraChangeResolutionAsked = 1; /* Disallow DMA2D copy from Camera frame buffer to LCD Frame buffer location */ Camera_AllowDma2dCopyCamFrmBuffToLcdFrmBuff = 0; /* Insert 10 ms delay */ HAL_Delay(10); } else { BSP_CAMERA_DeInit(); exit = 1; } } } /* Stop camera stream */ camera_status = BSP_CAMERA_Stop(); BSP_TEST_APPLI_ASSERT(camera_status != CAMERA_OK); /* End of camera demo */ } /** * @brief Display Camera demo hint * @param None * @retval None */ static void Camera_SetHint(void) { /* Clear the LCD */ BSP_LCD_Clear(LCD_COLOR_WHITE); /* Set Camera Demo description */ BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 90); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetFont(&Font24); BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"CAMERA EXAMPLE", CENTER_MODE); BSP_LCD_SetFont(&Font12); BSP_LCD_DisplayStringAt(0, 30, (uint8_t *)" Press User button for next resolution ", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 45, (uint8_t *)"Use Joystick Up/Down to change brightness ", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 60, (uint8_t *)"Use Joystick Left/Right to change contrast ", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 75, (uint8_t *)"Use Joystick Select to change visual effect", CENTER_MODE); /* Set the LCD Text Color */ BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_DrawRect(10, 100, BSP_LCD_GetXSize() - 20, BSP_LCD_GetYSize() - 110); BSP_LCD_DrawRect(11, 101, BSP_LCD_GetXSize() - 22, BSP_LCD_GetYSize() - 112); } /** * @brief DMA2D Camera frame buffer init Transfer completed callback * @param hdma2d: DMA2D handle. * @retval None */ static void Camera_FrameBuffer_Init_TransferComplete(DMA2D_HandleTypeDef *hdma2d) { CameraFrameBufferInitComplete = 1; } /** * @brief DMA2D Camera frame buffer init Transfer error callback * @param hdma2d: DMA2D handle. * @retval None */ static void Camera_FrameBuffer_Init_TransferError(DMA2D_HandleTypeDef *hdma2d) { CameraFrameBufferInitError = 1; } /** * @brief Init camera frame buffer with fixed color in format RGB565 * to a LCD display frame buffer line in format ARGB8888 using DMA2D service. * @param sizeX: Size in X of rectangular region of the Camera frame buffer to initialize (in pixels unit) * @param sizeX: Size in X of rectangular region of the Camera frame buffer to initialize (in pixels unit) * @param argb_Value : Initialization value (pattern ARGB8888) to be applied to all rectangular region selected. * @retval Status CAMERA_OK or CAMERA_ERROR */ static uint32_t CameraFrameBufferRgb565_Init(uint32_t sizeX, uint32_t sizeY, uint32_t argb8888_Value) { HAL_StatusTypeDef hal_status = HAL_OK; uint32_t status = CAMERA_ERROR; if((sizeX <= CAMERA_VGA_RES_X) && (sizeY <= CAMERA_VGA_RES_Y)) { /* Register to memory mode with RGB565 as colorMode */ hdma2d_eval.Init.Mode = DMA2D_R2M; /* Mode Register to Memory */ hdma2d_eval.Init.ColorMode = DMA2D_RGB565; /* Output color mode */ hdma2d_eval.Init.OutputOffset = 0x0; /* No offset in output */ /* Set callback functions on transfer complete and transfer error */ hdma2d_eval.XferCpltCallback = Camera_FrameBuffer_Init_TransferComplete; hdma2d_eval.XferErrorCallback = Camera_FrameBuffer_Init_TransferError; hdma2d_eval.Instance = DMA2D; hal_status = HAL_DMA2D_Init(&hdma2d_eval); BSP_TEST_APPLI_ASSERT(hal_status != HAL_OK); hal_status = HAL_DMA2D_Start_IT(&hdma2d_eval, argb8888_Value, /* Color value in Register to Memory DMA2D mode */ (uint32_t)CAMERA_FB_START_ADDR, /* DMA2D output buffer */ sizeX, /* width of buffer in pixels */ sizeY); /* height of buffer in lines */ BSP_TEST_APPLI_ASSERT(hal_status != HAL_OK); status = CAMERA_OK; } return (status); } /** * @brief Converts a camera buffer line of format RGB565 * to a LCD display frame buffer line in format ARGB8888 using DMA2D service. * @param pSrc: Pointer to source buffer * @param pDst: Pointer to destination buffer * @param xSize: Buffer width * @retval None */ static void ConvertCameraLineRgb565ToLcdLineARGB8888(void *pSrc, void *pDst, uint32_t xSize) { HAL_StatusTypeDef hal_status = HAL_OK; /* Configure the DMA2D Mode, Color Mode and output offset */ hdma2d_eval.Init.Mode = DMA2D_M2M_PFC; hdma2d_eval.Init.ColorMode = DMA2D_ARGB8888; hdma2d_eval.Init.OutputOffset = 0; /* Foreground Configuration */ hdma2d_eval.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA; hdma2d_eval.LayerCfg[1].InputAlpha = 0xFF; hdma2d_eval.LayerCfg[1].InputColorMode = DMA2D_RGB565; hdma2d_eval.LayerCfg[1].InputOffset = 0; hdma2d_eval.Instance = DMA2D; /* DMA2D Initialization */ if (HAL_DMA2D_Init(&hdma2d_eval) == HAL_OK) { if (HAL_DMA2D_ConfigLayer(&hdma2d_eval, 1) == HAL_OK) { if (HAL_DMA2D_Start(&hdma2d_eval, (uint32_t)pSrc, (uint32_t)pDst, xSize, 1) == HAL_OK) { /* Polling For DMA transfer */ hal_status = HAL_DMA2D_PollForTransfer(&hdma2d_eval, 10); BSP_TEST_APPLI_ASSERT(hal_status != HAL_OK); } } } } /** * @brief Converts a camera buffer line of format RGB565 * to a LCD display frame buffer column in format ARGB8888 using DMA2D service. * This handles the rotation of 90 degrees hour direction of camera buffer. * @param pSrc: Pointer to source buffer * @param pDst: Pointer to destination buffer * @param xSize: Buffer width * @param lineStridePixels: line stride in pixels unit * @retval None */ static void ConvertCameraLineRgb565ToLcdColumnARGB8888(void *pSrc, void *pDst, uint32_t xSize, uint32_t lineStridePixels) { HAL_StatusTypeDef hal_status = HAL_OK; /* Configure the DMA2D Mode, Color Mode and output offset */ hdma2d_eval.Init.Mode = DMA2D_M2M_PFC; hdma2d_eval.Init.ColorMode = DMA2D_ARGB8888; hdma2d_eval.Init.OutputOffset = lineStridePixels; /* Foreground Configuration */ hdma2d_eval.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA; hdma2d_eval.LayerCfg[1].InputAlpha = 0xFF; hdma2d_eval.LayerCfg[1].InputColorMode = DMA2D_RGB565; hdma2d_eval.LayerCfg[1].InputOffset = 0; hdma2d_eval.Instance = DMA2D; /* DMA2D Initialization */ if (HAL_DMA2D_Init(&hdma2d_eval) == HAL_OK) { if (HAL_DMA2D_ConfigLayer(&hdma2d_eval, 1) == HAL_OK) { /* xSize x 1 = size in pixels to copy */ /* Width = 1, Height = xSize */ if (HAL_DMA2D_Start(&hdma2d_eval, (uint32_t)pSrc, (uint32_t)pDst, 1, xSize) == HAL_OK) { /* Polling For DMA transfer */ hal_status = HAL_DMA2D_PollForTransfer(&hdma2d_eval, 10); BSP_TEST_APPLI_ASSERT(hal_status != HAL_OK); } } } } /** * @brief Camera line event callback * @param None * @retval None */ void BSP_CAMERA_LineEventCallback(void) { /* If DMA2D copy is allowed */ if(Camera_AllowDma2dCopyCamFrmBuffToLcdFrmBuff == 1) { if(BSP_CAMERA_GetRotation() == CAMERA_NO_ROTATION) { Camera_LineEventCallbackNoRotation(); } else if(BSP_CAMERA_GetRotation() == CAMERA_ROTATION_90) { Camera_LineEventCallbackRotation90(); } else { /* Do nothing */ ; } } } /** * @brief Camera line event callback when no camera image rotation is required * @param None * @retval None */ static void Camera_LineEventCallbackNoRotation(void) { uint32_t LcdResX = BSP_LCD_GetXSize(); uint32_t LcdResY = BSP_LCD_GetYSize(); if (refresh_authorized) { if ((offset_lcd == 0) && (CameraResX <= LcdResX) && (CameraResY <= LcdResY)) { /* If Camera resolution is lower than LCD resolution, set display in the middle of the screen */ offset_lcd = ((((LcdResY - CameraResY) / 2) * LcdResX) /* Middle of the screen on Y axis */ + ((LcdResX - CameraResX) / 2)) /* Middle of the screen on X axis */ * sizeof(uint32_t); if ((CameraResY == CAMERA_QQVGA_RES_Y) || (CameraResIndex == CAMERA_R480x272)) { /* Add offset for QQVGA */ offset_lcd += 40 * LcdResX * sizeof(uint32_t); } } if (display_line_counter < CameraResY) { if (display_line_counter < LcdResY) { if (CameraResX < LcdResX) { ConvertCameraLineRgb565ToLcdLineARGB8888((uint32_t *)(CAMERA_FB_START_ADDR + offset_cam), (uint32_t *)(LCD_FB_START_ADDRESS + offset_lcd), CameraResX); } else { ConvertCameraLineRgb565ToLcdLineARGB8888((uint32_t *)(CAMERA_FB_START_ADDR + offset_cam), (uint32_t *)(LCD_FB_START_ADDRESS + offset_lcd), LcdResX); } offset_cam = offset_cam + (CameraResX * sizeof(uint16_t)); offset_lcd = offset_lcd + (LcdResX * sizeof(uint32_t)); } display_line_counter++; } else { offset_cam = 0; offset_lcd = 0; display_line_counter = 0; } } } /** * @brief Camera line event callback when camera image rotation of 90 degrees hour * direction is required. * @param None * @retval None */ static void Camera_LineEventCallbackRotation90(void) { uint32_t LcdResX = BSP_LCD_GetXSize(); uint32_t LcdResY = BSP_LCD_GetYSize(); if (refresh_authorized) { if ((offset_lcd == 0) && (CameraResY <= LcdResX) && (CameraResX <= LcdResY)) { /* If Camera resolution is lower than LCD resolution, set display in the middle of the screen */ offset_lcd = ((((LcdResY - CameraResX) / 2) * LcdResX) /* Middle of the screen on Y axis */ - ((LcdResX - CameraResY) / 2)) /* Middle of the screen on X axis */ * sizeof(uint32_t); if ((CameraResY == CAMERA_QQVGA_RES_Y) || (CameraResIndex == CAMERA_R480x272)) { /* Add offset for QQVGA : + 40 LCD lines */ offset_lcd += 40 * LcdResX * sizeof(uint32_t); } } /* Count the number of line rotated copied to be able to stop when limit reached */ if (display_rotated_line_counter < CameraResY) { /* if number of rotated line copied is reaching horizontal resolution of display LCD : stop copying also */ if (display_rotated_line_counter < LcdResX) { /* Depending on CameraResX versus LcdResY */ /* clamp the column size copied to LcdResY if (CameraResX > LcdResY) */ if (CameraResX <= LcdResY) { ConvertCameraLineRgb565ToLcdColumnARGB8888((uint32_t *)(CAMERA_FB_START_ADDR + offset_cam), (uint32_t *)(LCD_FB_START_ADDRESS + offset_lcd), CameraResX, (LcdResX - 1)); /* lineStridePixels for DMA is always one horizontal line LCD - 1 pixels */ } else { ConvertCameraLineRgb565ToLcdColumnARGB8888((uint32_t *)(CAMERA_FB_START_ADDR + offset_cam), (uint32_t *)(LCD_FB_START_ADDRESS + offset_lcd), LcdResY, (LcdResX - 1)); /* lineStridePixels for DMA is always one horizontal line LCD - 1 pixels */ } offset_cam = offset_cam + (CameraResX * sizeof(uint16_t)); /* uint16_t : because format camera data is RGB565 */ /* offset_lcd is decremented after each line rotated copied by one pixel of the LCD buffer = 4 bytes (ARGB8888) */ /* from 'offset_lcd' pre computed in first if statement of the current function */ offset_lcd = offset_lcd - sizeof(uint32_t); /* uint32_t : because format of LCD Frame buffer is ARGB8888 */ } display_rotated_line_counter++; } else { offset_cam = 0; offset_lcd = 0; display_rotated_line_counter = 0; } } } /** * @} */ /** * @} */