Camera 5M JpegQuality=100

[DidierC 3]

Hi!
I can't take picture (one shot, CAM_IMGSIZE_5M) with Jpagquality=100 (jpgbufsize_divisor = 26). Increase Memory or jpgbufsize_divisor don't change anything. All work fine with Jpegquality<=85. Someone have solution?
Regard.

[CamilaSouza]

Hey, @DidierC-3

Could you share your code so I can try it on my side?

[DidierC 3]

@CamilaSouza
If I delete "setQuality" pgm works
Regards

#include <SDHCI.h>
#include <stdio.h> /* for sprintf */

#include <Camera.h>

#define BAUDRATE (115200)

SDClass theSD;

/**

Print error message
*/

void printError(enum CamErr err)
{
Serial.print("Error: ");
switch (err)
{
case CAM_ERR_NO_DEVICE:
Serial.println("No Device");
break;
case CAM_ERR_ILLEGAL_DEVERR:
Serial.println("Illegal device error");
break;
case CAM_ERR_ALREADY_INITIALIZED:
Serial.println("Already initialized");
break;
case CAM_ERR_NOT_INITIALIZED:
Serial.println("Not initialized");
break;
case CAM_ERR_NOT_STILL_INITIALIZED:
Serial.println("Still picture not initialized");
break;
case CAM_ERR_CANT_CREATE_THREAD:
Serial.println("Failed to create thread");
break;
case CAM_ERR_INVALID_PARAM:
Serial.println("Invalid parameter");
break;
case CAM_ERR_NO_MEMORY:
Serial.println("No memory");
break;
case CAM_ERR_USR_INUSED:
Serial.println("Buffer already in use");
break;
case CAM_ERR_NOT_PERMITTED:
Serial.println("Operation not permitted");
break;
default:
break;
}
}

/**

@brief Initialize camera
*/
void setup()
{
CamErr err;

/* Open serial communications and wait for port to open */

Serial.begin(BAUDRATE);
while (!Serial)
{
; /* wait for serial port to connect. Needed for native USB port only */
}

/* Initialize SD /
while (!theSD.begin())
{
/ wait until SD card is mounted. */
Serial.println("Insert SD card.");
}

/* begin() without parameters means that

number of buffers = 1, 30FPS, QVGA, YUV 4:2:2 format */

Serial.println("Prepare camera");
err = theCamera.begin();
theCamera.begin(
1, //default = 1
CAM_VIDEO_FPS_NONE, //default = CAM_VIDEO_FPS_5
CAM_IMGSIZE_5M_H, //default = CAM_IMGSIZE_QVGA_H (320)
CAM_IMGSIZE_5M_V, //default = CAM_IMGSIZE_QVGA_V (240)
CAM_IMAGE_PIX_FMT_JPG, //default = CAM_IMAGE_PIX_FMT_JPG
26 //default = 7
);
if (err != CAM_ERR_SUCCESS)
{
printError(err);
}

/* Auto white balance configuration */

Serial.println("Set Auto white balance parameter");
err = theCamera.setAutoWhiteBalanceMode(CAM_WHITE_BALANCE_AUTO);
if (err != CAM_ERR_SUCCESS)
{
printError(err);
}

Serial.println("Set HDR Auto");
theCamera.setHDR(CAM_HDR_MODE_AUTO);
if (err != CAM_ERR_SUCCESS)
{
printError(err);
}
/* Set parameters about still picture.

In the following case, QUADVGA and JPEG.
*/
Serial.println("Set Quality");
theCamera.setJPEGQuality(100);
if (err != CAM_ERR_SUCCESS)
{
printError(err);
}
int g_divisor = 7;
Serial.println("Set still picture format");
while (1) {
err = theCamera.setStillPictureImageFormat(CAM_IMGSIZE_5M_H, CAM_IMGSIZE_5M_V,
CAM_IMAGE_PIX_FMT_JPG, g_divisor);
if (err == CAM_ERR_NO_MEMORY) {
g_divisor++;
} else {
break;
}
}
Serial.println(g_divisor);
}

/**

@brief Take picture with format JPEG per second
*/

void loop()
{
sleep(1); /* wait for one second to take still picture. */

Serial.println("call takePicture()");
CamImage img = theCamera.takePicture();

/* Check availability of the img instance. /
/ If any errors occur, the img is not available. */

if (img.isAvailable())
{
/* Create file name */

  char filename[16] = {0};
  sprintf(filename, "PICT03.JPG");

  Serial.print("Save taken picture as ");
  Serial.print(filename);
  Serial.println("");

  /* Remove the old file with the same file name as new created file,
   * and create new file.
   */

  theSD.remove(filename);
  File myFile = theSD.open(filename, FILE_WRITE);
  myFile.write(img.getImgBuff(), img.getImgSize());
  myFile.close();
}

while(1) {}

}

[CamilaSouza]

Hey, @DidierC-3

Sorry to take so long to respond.

How is your project going? Did you solve your issue?

I tried taking a picture with size CAM_IMGSIZE_5M and I also cannot go up to 100% quality.
I can only go up to 90%, which gives me a picture of size 365KB.

I don't know if you're still interested in this topic, but I'm investigating internally and will post any progress in here for future reference.