RAW format support in esp32 camera driver

[bvpmysore]

We are using esp32s3 board with OV5640 sensor.
I understand that OV5640 support RAW Bayer output. However, I couldn't see any support in ESP32-camera driver.

I have modifed esp32-camera\target\esp32s3\ll_cam.c file to add support for PIXFORMAT_RAW,
inside ll_cam_set_sample_mode() function

else if(pix_format == PIXFORMAT_RAW){
cam->in_bytes_per_pixel = 1; //ADDED TO SUPPORT RAW FORMAT
cam->fb_bytes_per_pixel = 1;
}

In esp32-camera\driver\cam_hal.c file, I observed the following function

cam_dma_config()-->ll_cam_dma_sizes()-->ll_cam_calc_rgb_dma()

If not jpeg mode " ll_cam_calc_rgb_dma() " function will be called. Is this function applicable to only PIXFORMAT_RGB565 or will this also work fine for PIXFORMAT_RAW?

If anyone has any information, kindly let me know. It would be appreciated and useful for me.

[jamespollard]

Hi there,

I'm having exactly the same issue as you are - care to share your entire code (main.c and any modified esp32-camera lib files)?

I'm desperate to get a fix for this - so hopefully we can figure it out together!

James

[soma1729]

I'll be working on this too.

Photogrammetry application where i want access to all 5 million raw pixels (whether they Red, Green, or Blue)

Will report back when I have some sensible data out.

Also keen on windowing (so that it can be piped even in tiny RAM of ESP32 with no PSRAM)

[freedaV]

Hello,

I am using the Adafruit ESP32 Feather V2 connected to the OV5640 Camera Module. I am also using the Ethernet Feather to send the frames to my PC over an ethernet connection.

I want to have the highest frame size and rawest pixel format for my project without the ESP crashing. I have also stumbled upon the same problem, that the RAW format is not supported by the drivers.

Have you done any progress in making it work?

Cheers,
freeda