A year ago I had a lot of grief getting the JPEG peripheral working - came down to memory regions! Now I want to improve the quality by changing from JPEG_420_SUBSAMPLING to JPEG_444_SUBSAMPLING but I get random hard faults .Is it possible the jpeg ...
Good afternoon, In I have two projects Your JPEG_DecodingFs_DMA and mine. In your project, after executing the HAL_JPEG_Decode_DMA function in normal mode, the function returns 4110 bytes of Context in a stepwise 14 bytes. In my program, the HAL_JPEG...
Hello,I am currently trying to play a video using the JPEG decoder on a STM32F76xx chip.Right now, I can play a video with HAL_JPEG_Decode in polling mode, but the it takes too long (~100ms) and the FPS is low.My objective, is to use HAL_JPEG_Decode_...
Good afternoon. I made a working project on CubeIDE for a railway timetable (LWIP, FreeRTOS, DSI, HDMI). The project was created in the repository. But the management has a requirement to add a symbolic part (JPG or bmp image). There was a problem wh...
Hello, I am trying to implement bmp to jpeg encode application. I have used official STM code example. There is no compile error.I gather RGB565 data from OV7670 camera. I can successfully write to SD card as 16 bit bitmap file and open it on a Windo...
with libjpeg or using hardware in polling, mode compression works fine.but when using DMA image is getting corrupted#include "jpeg_encode.h" #include "jpeglib.h" #include "jdata_conf.h" // variables used for dma mode uint32_t YCBCR_Size; uint32_t...
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.Applicatio...
Hello,I'm developing a HAL-based software running on STM32F778AI MCU. The software uses the hardware JPEG decoder in DMA mode.It decodes 'classical' JPEG images that have 8-bit DQTs without an issue.But if a JPEG's the precision of the quantization t...
Hello,Still developping on my STM32H753VT6 with touchGFX. Instead of loading images with touchGFX designer, I want to decode a JPEG image and then display it on my LCD screen.For the moment I've just checked the example for the STM32H750B-DK demo boa...
HelloI am using an STM32H743 MCU that implements acquisition of frame from camera and compress it to JPEG format.The setup to compress the image is with hardware JPEG encoder with MDMA stream.Image resolution is 240*320 pixels, greyscale. The procedu...
