If I try to encode blocks of colour using the hardware JPEG encode in an F7 from a BMP image (screen memory in this case) they fail if the colour is pure (e.g. all red, all blue) and they come out different shades of green.By experiment, I have found...
In my project, SD card was used to store the video, JPEG peripherals +DMA2D were used to convert the video format and finally displayed on the LCD screen, but only the first 4 frames could be converted each time, and then HAL_JPEG_DecodeCpltCallback ...
Hello,I’ve been working for a few weeks on a personal project concerning cameras with OV2640 sensors. I am using a MCU F446ZE mounted on NUCLEO board. As you can see from the product tab, to use this card for cameras, implies the use of various links...
Hi,I'm using TouchGFX to develop an application, using mostly static screens. But I have a requirement to produce a runtime splash screen and idle screen from user-supplied images read from SD card or stored in flash. I can do this without too much p...
Hi all,I build a project with STM32CubeMX and using LibJPEG to decode the JPEG file from SDCard.And now I face a problem ,when it goes to the step 5 - start to decompress, it will stock in that function with no reason and the hardfault descripe like...
Hello to everyone,I'm working on displaying JPEG files using STM32H745BIT6 chip. I successfully configured all peripherals (LTDC, DMA2D, HW JPEG decoder) and now I'm able to dislay JPEG data. At first JPEG decoder converts JPEG data to YCbCr data and...
I'm currently working on a project that needs to decode JPEG's and do so as fast as possible, natuarlly I've looked for alternatives to the libjpeg offered by CubeMX and stumbled upon Libjpeg Turbo which uses SIMD instructions to optimize the de-/com...
hiI am practicing jpeg hardware decoding with stm32f769 disco board. During practice, some images were displayed normally, but some images could not be displayed at all. I tested with this :STM32Cube_FW_F7_V1.17.0\Projects\STM32F769I-Discovery\Examp...
I'm trying to run the JPEG_EncodingFromFLASH_DMA example and the HAL_JPEG_GetDataCallback & HAL_JPEG_DataReadyCallback never executed.If I try the polling method, the process is successful.I've disabled the D-Cache & I-Cache.