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fix (#3417)

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SybexX
2024-12-03 21:12:19 +01:00
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parent 8f89a396f8
commit be7146c886
8 changed files with 450 additions and 189 deletions
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code/components/jomjol_controlcamera/ov2640_contrast_brightness.cpp Normal file
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// Workaround - bug in cam library - enable bits are set without using bitwise OR logic -> only latest enable setting is used
// Reference: https://esp32.com/viewtopic.php?f=19&t=14376#p93178
/* The memory structure is as follows for
byte_0 = enable_bits
byte_0->bit0 = enable saturation and hue --> OK
byte_0->bit1 = enable saturation --> OK
byte_0->bit2 = enable brightness and contrast --> OK
byte_0->bit3 = enable green -> blue spitial effect (Antique and blunish and greenish and reddish and b&w) enable
byte_0->bit4 = anable gray -> red spitial effect (Antique and blunish and greenish and reddish and b&w) enable
byte_0->bit5 = remove (UV) in YUV color system
byte_0->bit6 = enable negative
byte_0->bit7 = remove (Y) in YUV color system
byte_1 = saturation1 0-255 --> ?
byte_2 = hue 0-255 --> OK
byte_3 = saturation2 0-255 --> OK
byte_4 = reenter saturation2 in documents --> ?
byte_5 = spital effect green -> blue 0-255 --> ?
byte_6 = spital effect gray -> red 0-255 --> ?
byte_7 = contrast lower byte 0-255 --> OK
byte_8 = contrast higher byte 0-255 --> OK
byte_9 = brightness 0-255 --> OK
byte_10 = if byte_10==4 contrast effective --> ?
*/
#include <stdint.h>
#include "esp_camera.h"
#include "ov2640_contrast_brightness.h"
static const uint8_t brightness_regs[6][5] = {
{0x7C, 0x7D, 0x7C, 0x7D, 0x7D },
{0x00, 0x04, 0x09, 0x00, 0x00 }, /* -2 */
{0x00, 0x04, 0x09, 0x10, 0x00 }, /* -1 */
{0x00, 0x04, 0x09, 0x20, 0x00 }, /* 0 */
{0x00, 0x04, 0x09, 0x30, 0x00 }, /* +1 */
{0x00, 0x04, 0x09, 0x40, 0x00 }, /* +2 */
};
static const uint8_t contrast_regs[6][7] = {
{0x7C, 0x7D, 0x7C, 0x7D, 0x7D, 0x7D, 0x7D },
{0x00, 0x04, 0x07, 0x20, 0x18, 0x34, 0x06 }, /* -2 */
{0x00, 0x04, 0x07, 0x20, 0x1c, 0x2a, 0x06 }, /* -1 */
{0x00, 0x04, 0x07, 0x20, 0x20, 0x20, 0x06 }, /* 0 */
{0x00, 0x04, 0x07, 0x20, 0x24, 0x16, 0x06 }, /* +1 */
{0x00, 0x04, 0x07, 0x20, 0x28, 0x0c, 0x06 }, /* +2 */
};
int ov2640_set_contrast_brightness(sensor_t *sensor, int _contrast, int _brightness)
{
int ret=0;
_contrast += 3;
if (_contrast <= 0) {
_contrast = 3;
}
else if (_contrast > 5)
{
_contrast = 5;
}
sensor->status.contrast = _contrast-3;
_brightness += 3;
if (_brightness <= 0) {
_brightness = 3;
}
else if (_brightness > 5)
{
_brightness = 5;
}
int brightness = brightness_regs[_brightness][3];
sensor->status.brightness = _brightness-3;
// sensor->set_reg(sensor, int reg, int mask, int value)
sensor->set_reg(sensor, 0xFF, 0x01, 0x00); // Select DSP bank
for (int i=0; i<7; i++)
{
if (i == 5)
{
sensor->set_reg(sensor, contrast_regs[0][i], 0xFF, (brightness | contrast_regs[_contrast][i]));
}
else
{
sensor->set_reg(sensor, contrast_regs[0][i], 0xFF, contrast_regs[_contrast][i]);
}
}
return ret;
}