Decoded VGA size JPEG images on STM32H750B-DK.
As a result of measuring the decoding processing time, it takes three times as long as the processing time of Application note.
I would like to know the reason why the processing time is so long.
Application Note : 4ms
Measured value : 12ms
[Program]
HAL_JPEG_Decode_DMA(hjpeg ,(uint8_t *)JPEGSourceAddress ,CHUNK_SIZE_IN ,(uint8_t *)FrameBufferAddress ,CHUNK_SIZE_OUT);
[Reference]
AN4996 Application note
https://www.st.com/resource/en/application_note/dm00356635-hardware-jpeg-codec-peripheral-in-stm32f76-77xxx-and-stm32h743-53-45-55-47-57-50-a3-b3-b0xx-microcontrollers-stmicroelectronics.pdf
3.2 JPEG decoding performances
Product : STM32H743L
Image resolution : VGA(640x480)
Hardware decoding : 4ms
