mirror of
https://github.com/jomjol/AI-on-the-edge-device.git
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67 lines
2.5 KiB
C++
67 lines
2.5 KiB
C++
// Workaround - bug in cam library - enable bits are set without using bitwise OR logic -> only latest enable setting is used
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// Reference: https://esp32.com/viewtopic.php?f=19&t=14376#p93178
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/* The memory structure is as follows for
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byte_0 = enable_bits
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byte_0->bit0 = enable saturation and hue --> OK
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byte_0->bit1 = enable saturation --> OK
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byte_0->bit2 = enable brightness and contrast --> OK
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byte_0->bit3 = enable green -> blue spitial effect (Antique and blunish and greenish and reddish and b&w) enable
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byte_0->bit4 = anable gray -> red spitial effect (Antique and blunish and greenish and reddish and b&w) enable
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byte_0->bit5 = remove (UV) in YUV color system
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byte_0->bit6 = enable negative
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byte_0->bit7 = remove (Y) in YUV color system
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byte_1 = saturation1 0-255 --> ?
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byte_2 = hue 0-255 --> OK
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byte_3 = saturation2 0-255 --> OK
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byte_4 = reenter saturation2 in documents --> ?
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byte_5 = spital effect green -> blue 0-255 --> ?
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byte_6 = spital effect gray -> red 0-255 --> ?
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byte_7 = contrast lower byte 0-255 --> OK
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byte_8 = contrast higher byte 0-255 --> OK
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byte_9 = brightness 0-255 --> OK
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byte_10 = if byte_10==4 contrast effective --> ?
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*/
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#include <stdint.h>
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#include "esp_camera.h"
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#include "ov2640_specialEffect.h"
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static const uint8_t special_effects_regs[8][5] = {
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{0x7C, 0x7D, 0x7C, 0x7D, 0x7D},
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{0x00, 0X00, 0x05, 0X80, 0X80}, /* no effect */
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{0x00, 0X40, 0x05, 0X80, 0X80}, /* negative */
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{0x00, 0X18, 0x05, 0X80, 0X80}, /* black and white */
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{0x00, 0X18, 0x05, 0X40, 0XC0}, /* reddish */
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{0x00, 0X18, 0x05, 0X40, 0X40}, /* greenish */
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{0x00, 0X18, 0x05, 0XA0, 0X40}, /* blue */
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{0x00, 0X18, 0x05, 0X40, 0XA6}, /* retro */
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};
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int ov2640_set_special_effect(sensor_t *sensor, int effect)
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{
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int ret = 0;
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effect++;
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if (effect <= 0 || effect > 7)
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{
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effect = 1;
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}
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sensor->status.special_effect = effect - 1;
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int registerValue = 0x06; // enable saturation, contrast, brightness
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registerValue |= special_effects_regs[effect][1];
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// sensor->set_reg(sensor, int reg, int mask, int value)
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sensor->set_reg(sensor, 0xFF, 0x01, 0x00); // Select DSP bank
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sensor->set_reg(sensor, special_effects_regs[0][0], 0xFF, 0x00);
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sensor->set_reg(sensor, special_effects_regs[0][1], 0x5E, registerValue);
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for (int i = 2; i < 5; i++)
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{
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sensor->set_reg(sensor, special_effects_regs[0][i], 0xFF, special_effects_regs[effect][i]);
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}
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return ret;
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}
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