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/**
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******************************************************************************
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* File Name : STM32DMA.hpp
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******************************************************************************
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* This file is generated by TouchGFX Generator 4.26.1. Please, do not edit!
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2026 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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#ifndef STM32DMA_HPP
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#define STM32DMA_HPP
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#include <touchgfx/Bitmap.hpp>
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#include <touchgfx/hal/DMA.hpp>
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#define JPEG_BUFFER_EMPTY 0
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#define JPEG_BUFFER_FULL 1
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#define NB_OUTPUT_DATA_BUFFERS 2
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extern volatile uint32_t JPEG_OUT_Read_BufferIndex;
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extern volatile uint32_t DMA2D_CopyBufferEnd;
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typedef struct
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{
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uint8_t State;
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uint8_t* DataBuffer;
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uint32_t DataBufferSize;
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uint32_t MCU_index;
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uint8_t* OutputBuffer;
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bool FirstJob;
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bool LastJob;
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uint32_t MCU_drawn;
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bool DoCropping;
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} JPEG_Data_BufferTypeDef;
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extern JPEG_Data_BufferTypeDef Jpeg_OUT_BufferTab[NB_OUTPUT_DATA_BUFFERS];
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extern "C" void DMA2D_CropBuffer(JPEG_Data_BufferTypeDef& job);
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extern "C" void DMA2D_CopyBuffer(JPEG_Data_BufferTypeDef& job);
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extern "C" void DMA2D_ExternalJobCompleted(JPEG_Data_BufferTypeDef& job);
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/**
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* @class STM32DMA
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*
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* @brief This class specializes DMA_Interface for the STM32 processors.
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*
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* @sa touchgfx::DMA_Interface
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*/
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class STM32DMA : public touchgfx::DMA_Interface
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{
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/**
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* @typedef touchgfx::DMA_Interface Base
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*
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* @brief Defines an alias representing the base.
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*
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Defines an alias representing the base.
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*/
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typedef touchgfx::DMA_Interface Base;
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public:
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/**
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* @fn STM32DMA::STM32DMA();
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*
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* @brief Default constructor.
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*
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* Default constructor.
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*/
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STM32DMA();
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/**
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* @fn STM32DMA::~STM32DMA();
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*
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* @brief Destructor.
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*
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* Destructor.
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*/
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virtual ~STM32DMA();
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/**
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* @fn DMAType touchgfx::STM32DMA::getDMAType()
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*
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* @brief Function for obtaining the DMA type of the concrete DMA_Interface implementation.
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*
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* Function for obtaining the DMA type of the concrete DMA_Interface implementation.
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* As default, will return DMA_TYPE_CHROMART type value.
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*
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* @return a DMAType value of the concrete DMA_Interface implementation.
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*/
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virtual touchgfx::DMAType getDMAType(void)
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{
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return touchgfx::DMA_TYPE_CHROMART;
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}
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/**
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* @fn touchgfx::BlitOperations STM32DMA::getBlitCaps();
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*
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* @brief Gets the blit capabilities.
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*
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* Gets the blit capabilities.
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*
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* This DMA supports a range of blit caps: BLIT_OP_COPY, BLIT_OP_COPY_ARGB8888,
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* BLIT_OP_COPY_ARGB8888_WITH_ALPHA, BLIT_OP_COPY_A4, BLIT_OP_COPY_A8.
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*
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*
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* @return Currently supported blitcaps.
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*/
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virtual touchgfx::BlitOperations getBlitCaps();
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/**
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* @fn void STM32DMA::initialize();
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*
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* @brief Perform hardware specific initialization.
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*
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* Perform hardware specific initialization.
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*/
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virtual void initialize();
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/**
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* @fn void STM32DMA::signalDMAInterrupt()
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*
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* @brief Raises a DMA interrupt signal.
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*
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* Raises a DMA interrupt signal.
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*/
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virtual void signalDMAInterrupt()
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{
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if (!started_by_external_job)
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{
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executeCompleted();
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/* Start new external job if next buffer is full */
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if (Jpeg_OUT_BufferTab[JPEG_OUT_Read_BufferIndex].State == JPEG_BUFFER_FULL && !DMA2D_CopyBufferEnd && !isRunning)
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{
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started_by_external_job = true;
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externalJobExecute();
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}
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}
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else
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{
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externalJobCompleted();
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/* Prioritize BlitOps if there are any pending */
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if (!queue.isEmpty() && isAllowed)
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{
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started_by_external_job = false;
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execute();
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}
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}
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}
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virtual void start()
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{
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if (!queue.isEmpty() && isAllowed && !isRunning)
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{
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started_by_external_job = false;
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execute();
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}
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else if ((Jpeg_OUT_BufferTab[JPEG_OUT_Read_BufferIndex].State == JPEG_BUFFER_FULL) && !isRunning)
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{
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started_by_external_job = true;
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externalJobExecute();
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}
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}
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protected:
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/**
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* @fn virtual void STM32DMA::setupDataCopy(const touchgfx::BlitOp& blitOp);
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*
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* @brief Configures the DMA for copying data to the frame buffer.
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*
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* Configures the DMA for copying data to the frame buffer.
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*
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* @param blitOp Details on the copy to perform.
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*/
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virtual void setupDataCopy(const touchgfx::BlitOp& blitOp);
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/**
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* @fn virtual void STM32DMA::setupDataFill(const touchgfx::BlitOp& blitOp);
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*
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* @brief Configures the DMA for "filling" the frame-buffer with a single color.
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*
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* Configures the DMA for "filling" the frame-buffer with a single color.
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*
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* @param blitOp Details on the "fill" to perform.
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*/
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virtual void setupDataFill(const touchgfx::BlitOp& blitOp);
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/**
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* @fn void STM32DMA::externalJobCompleted();
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*
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* @brief Handle DMA2D when an external job has been executed
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*
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* @param None
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*/
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void externalJobCompleted()
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{
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if (isRunning)
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{
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isRunning = false;
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DMA2D_ExternalJobCompleted(Jpeg_OUT_BufferTab[JPEG_OUT_Read_BufferIndex]);
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}
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}
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/**
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* @fn void STM32DMA::externalJobExecute();
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*
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* @brief Executes an external DMA2D job
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*
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* @param None
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*/
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void externalJobExecute()
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{
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isRunning = true;
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if (Jpeg_OUT_BufferTab[JPEG_OUT_Read_BufferIndex].DoCropping)
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{
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DMA2D_CropBuffer(Jpeg_OUT_BufferTab[JPEG_OUT_Read_BufferIndex]);
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}
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else
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{
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DMA2D_CopyBuffer(Jpeg_OUT_BufferTab[JPEG_OUT_Read_BufferIndex]);
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}
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}
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private:
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touchgfx::LockFreeDMA_Queue dma_queue;
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touchgfx::BlitOp queue_storage[96];
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bool started_by_external_job;
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/**
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* @fn void STM32DMA::getChromARTInputFormat()
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*
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* @brief Convert Bitmap format to ChromART Input format.
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*
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* @param format Bitmap format.
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*
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* @return ChromART Input format.
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*/
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inline uint32_t getChromARTInputFormat(touchgfx::Bitmap::BitmapFormat format);
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/**
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* @fn void STM32DMA::getChromARTOutputFormat()
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*
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* @brief Convert Bitmap format to ChromART Output format.
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*
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* @param format Bitmap format.
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*
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* @return ChromART Output format.
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*/
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inline uint32_t getChromARTOutputFormat(touchgfx::Bitmap::BitmapFormat format);
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};
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#endif // STM32DMA_HPP
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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