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496 lines
11 KiB
496 lines
11 KiB
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#include "video.h"
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#include "debayer.h"
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string>
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std::string toBits(unsigned int i, int maxbits);
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// macros to make code better readable
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#define CE (*(src))
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#define UP (*(src-src_w))
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#define DN (*(src+src_w))
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#define LE (*(src-1))
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#define RI (*(src+1))
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#define UPLE (*(src-src_w-1))
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#define UPRI (*(src-src_w+1))
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#define DNLE (*(src+src_w-1))
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#define DNRI (*(src+src_w+1))
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#define BITCONV(d) ((d>>8) & 0xff)
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#define STORE if (dst) { *(dst++) = BITCONV(r); *(dst++) = BITCONV(g); *(dst++) = BITCONV(b); src++; }
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#define STORE8 if (dst) { *(dst++) = (r & 0xff); *(dst++) = (g & 0xff); *(dst++) = (b & 0xff); src++; }
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#define STOREF16 if (dstf) { *(dstf++) = ((float)r/65535.0); *(dstf++) = ((float)g/65535.0); *(dstf++) = ((float)b/65535.0); }
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#define STOREF8 if (dstf) { *(dstf++) = ((float)r/255.0); *(dstf++) = ((float)g/255.0); *(dstf++) = ((float)b/255.0); }
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/*
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The function converts a 16bit GRBG 2x2 CFA coded image into an 8bit
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RGB image by bilinear interpolation.
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*/
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void debayer_grbg16 (uint16_t * src, int src_w, int src_h,
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uint8_t * dst, float * dstf, int dst_w, int dst_h) {
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// GG RR GG RR
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// BB GG BB GG
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// GG RR GG RR
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// BB GG BB GG
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uint32_t r, g, b;
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int xs, ys;
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// start with upper left pixel (green)
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r = RI;
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g = CE;
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b = DN;
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STORE;
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STOREF16;
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// upper first line, starts with RR GG RR ...
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for (xs = 1; xs < src_w - 1; xs+=2) {
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// red pixel
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r = CE;
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g = (LE + RI + DN) / 3;
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b = (DNLE + DNRI) / 2;
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STORE;
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STOREF16;
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// green pixel
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r = (LE + RI) / 2;
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g = CE;
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b = DN;
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STORE;
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STOREF16;
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}
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// upper right pixel (red)
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r = CE;
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g = (DN + LE) / 2;
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b = DNLE;
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STORE;
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STOREF16;
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// go through the "body" of the image
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for (ys = 1; ys < src_h - 1; ys+=2) {
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// every second line with BB GG BB GG (start at 2nd line)
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// left hand pixel (blue)
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r = (UPRI + DNRI) / 2;
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g = (UP + DN + RI) / 3;
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b = CE;
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STORE;
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STOREF16;
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for (xs = 1; xs < src_w - 1; xs+=2) {
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// green pixel
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r = (UP + DN) / 2;
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g = CE;
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b = (LE + RI) / 2;
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STORE;
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STOREF16;
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// blue pixel
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r = (UPLE + UPRI + DNLE + DNRI) / 4;
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g = (LE + RI + UP + DN) / 4;
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b = CE;
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STORE;
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STOREF16;
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}
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// last pixel in line (green)
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r = (UP + DN) / 2;
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g = CE;
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b = LE;
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STORE;
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STOREF16;
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// every second line with GG RR GG RR ... (start at 3rd line)
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// left hand pixel (green)
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r = RI;
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g = CE;
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b = (UP + DN) / 2;
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STORE;
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STOREF16;
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for (xs = 1; xs < src_w - 1; xs+=2) {
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// red pixel
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r = CE;
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g = (LE + RI + UP + DN) / 4;
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b = (UPLE + UPRI + DNLE + DNRI) / 4;
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STORE;
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STOREF16;
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// green pixel
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r = (LE + RI) / 2;
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g = CE;
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b = (UP + DN) / 2;
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STORE;
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STOREF16;
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}
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// last pixel in line (red)
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r = CE;
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g = (UP + DN + LE) / 3;
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b = (UPLE + DNLE) / 2;
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STORE;
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STOREF16;
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}
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// bottom left pixel
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r = UPRI;
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g = (UP + RI) / 2;
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b = CE;
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STORE;
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STOREF16;
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// last line starting with GG BB GG ...
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for (xs = 1; xs < src_w - 1; xs+=2) {
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// green pixel
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r = UP;
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g = CE;
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b = (LE + RI) / 2;
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STORE;
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STOREF16;
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// blue pixel
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r = (UPLE + UPRI) / 2;
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g = (LE + UP + RI) / 2;
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b = CE;
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STORE;
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STOREF16;
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}
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// bottom right pixel (green)
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r = UP;
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g = CE;
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b = LE;
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STORE;
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STOREF16;
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}
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/*
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The function converts a 8bit GRBG 2x2 CFA coded image into an 8bit
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RGB image by bilinear interpolation.
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*/
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void debayer_gbrg8 (uint8_t * src, int src_w, int src_h, uint8_t *dst, float *dstf, int dst_w, int dst_h) {
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debayer_grbg8 (src, src_w, src_h, dst, dstf, dst_w, dst_h);
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};
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void debayer_rggb8 (uint8_t * src, int src_w, int src_h, uint8_t * dst, float *dstf, int dst_w, int dst_h) {
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debayer_grbg8 (src, src_w, src_h, dst, dstf, dst_w, dst_h);
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};
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void debayer_grbg8 (uint8_t * src, int src_w, int src_h, uint8_t * dst, float *dstf, int dst_w, int dst_h) {
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// GG RR GG RR
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// BB GG BB GG
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// GG RR GG RR
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// BB GG BB GG
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uint16_t r, g, b;
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int xs, ys;
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// start with upper left pixel (green)
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r = RI;
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g = CE;
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b = DN;
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STORE8;
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STOREF8;
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// upper first line, starts with RR GG RR ...
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for (xs = 1; xs < src_w - 1; xs+=2) {
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// red pixel
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r = CE;
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g = (LE + RI + DN) / 3;
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b = (DNLE + DNRI) / 2;
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STORE8;
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STOREF8;
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// green pixel
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r = (LE + RI) / 2;
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g = CE;
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b = DN;
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STORE8;
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STOREF8;
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}
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// upper right pixel (red)
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r = CE;
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g = (DN + LE) / 2;
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b = DNLE;
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STORE8;
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STOREF8;
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// go through the "body" of the image
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for (ys = 1; ys < src_h - 1; ys+=2) {
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// every second line with BB GG BB GG (start at 2nd line)
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// left hand pixel (blue)
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r = (UPRI + DNRI) / 2;
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g = (UP + DN + RI) / 3;
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b = CE;
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STORE8;
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STOREF8;
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for (xs = 1; xs < src_w - 1; xs+=2) {
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// green pixel
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r = (UP + DN) / 2;
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g = CE;
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b = (LE + RI) / 2;
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STORE8;
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STOREF8;
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// blue pixel
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r = (UPLE + UPRI + DNLE + DNRI) / 4;
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g = (LE + RI + UP + DN) / 4;
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b = CE;
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STORE8;
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STOREF8;
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}
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// last pixel in line (green)
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r = (UP + DN) / 2;
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g = CE;
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b = LE;
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STORE8;
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STOREF8;
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// every second line with GG RR GG RR ... (start at 3rd line)
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// left hand pixel (green)
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r = RI;
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g = CE;
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b = (UP + DN) / 2;
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STORE8;
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STOREF8;
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for (xs = 1; xs < src_w - 1; xs+=2) {
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// red pixel
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r = CE;
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g = (LE + RI + UP + DN) / 4;
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b = (UPLE + UPRI + DNLE + DNRI) / 4;
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STORE8;
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STOREF8;
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// green pixel
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r = (LE + RI) / 2;
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g = CE;
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b = (UP + DN) / 2;
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STORE8;
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STOREF8;
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}
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// last pixel in line (red)
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r = CE;
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g = (UP + DN + LE) / 3;
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b = (UPLE + DNLE) / 2;
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STORE8;
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STOREF8;
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}
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// bottom left pixel
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r = UPRI;
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g = (UP + RI) / 2;
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b = CE;
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STORE8;
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STOREF8;
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// last line starting with GG BB GG ...
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for (xs = 1; xs < src_w - 1; xs+=2) {
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// green pixel
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r = UP;
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g = CE;
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b = (LE + RI) / 2;
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STORE8;
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STOREF8;
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// blue pixel
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r = (UPLE + UPRI) / 2;
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g = (LE + UP + RI) / 2;
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b = CE;
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STORE8;
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STOREF8;
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}
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// bottom right pixel (green)
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r = UP;
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g = CE;
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b = LE;
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STORE8;
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STOREF8;
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}
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#define MAX(_a_,_m_) ( _a_ > _m_ ? _m_ : _a_)
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#define PRGGB10P_U ((uint16_t)(*(psrc-src_w*2*10/8)))
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#define PRGGB10P_D ((uint16_t)(*(psrc+src_w*2*10/8)))
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#define PRGGB10P_L ((uint16_t)(*(psrc-2)*10/8))
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#define PRGGB10P_R ((uint16_t)(*(psrc+2)*10/8))
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#define PRGGB10P_UL ((uint16_t)(*(psrc-2-src_w*2*10/8)))
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#define PRGGB10P_UR ((uint16_t)(*(psrc+2-src_w*2*10/8)))
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#define PRGGB10P_DL ((uint16_t)(*(psrc-2-src_w*2*10/8)))
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#define PRGGB10P_DR ((uint16_t)(*(psrc+2+src_w*2*10/8)))
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void debayer_rggb10packet (uint8_t *src, int src_w, int src_h,
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uint8_t *dst, float *dstf, int dst_w, int dst_h) {
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debug ("not yep implemented");
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debug ("src size:%dx%d dst size:%dx%d", src_w, src_h, dst_w, dst_h);
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};
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std::string toBits(unsigned int i, int maxbits) {
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int b;
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std::string out = "";
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for (b = 0; b < maxbits; b++) {
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if (b % 8 == 0 && b) out = ":" + out;
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if (i % 2) out = "1" + out;
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else out = "0" + out;
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i = i >> 1;
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}
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return out;
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}
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inline int swap16(uint16_t i) {
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uint16_t r;
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*(((unsigned char *)&r)) = *(((unsigned char *)&i)+1);
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*(((unsigned char *)&r)+1) = *(((unsigned char *)&i));
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return r;
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}
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#define PRGGB10_U (unsigned int)(*(psrc-src_w))
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#define PRGGB10_D (unsigned int)(*(psrc+src_w))
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#define PRGGB10_L (unsigned int)(*(psrc-1))
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#define PRGGB10_R (unsigned int)(*(psrc+1))
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#define PRGGB10_UL (unsigned int)(*(psrc-1-src_w))
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#define PRGGB10_UR (unsigned int)(*(psrc+1-src_w))
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#define PRGGB10_DL (unsigned int)(*(psrc-1+src_w))
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#define PRGGB10_DR (unsigned int)(*(psrc+1+src_w))
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void debayer_gbrg10 (uint8_t * src, int src_w, int src_h, uint8_t * dst, float * dstf, int dst_w, int dst_h) {
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// GG BB GG BB
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// RR GG RR GG
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// GG BB GG BB
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// RR GG RR GG
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int xs, ys, xd, yd;
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uint32_t r, g, b, data;
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int max = dst_w * dst_h * 3;
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uint8_t *pdst = NULL;
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float *pdstf = NULL;
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uint16_t *psrc = NULL;
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int max_r = 0;
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int max_g = 0;
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int max_b = 0;
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pdst = dst;
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pdstf = dstf;
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for (ys = 0, yd = 0, psrc = (uint16_t*)src; ys < dst_h; ys++, yd++) {
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r = 0;
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g = 0;
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b = 0;
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for (xs = 0, xd = 0; xd < dst_w; xs++, xd++) {
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if (ys > 0 && ys < src_h-1 && xs > 0 && xs < src_w-1) {
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r = 0; b = 0; g = 0;
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if (ys&1) {
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if (xs&1) {
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b = (unsigned int)(PRGGB10_U + PRGGB10_D) >> 1;
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g = *psrc;
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r = (unsigned int)(PRGGB10_L + PRGGB10_R) >> 1;
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}
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else {
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b = (unsigned int)(PRGGB10_UL + PRGGB10_DL + PRGGB10_UR + PRGGB10_UL) >> 2;
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g = (unsigned int)(PRGGB10_L + PRGGB10_R + PRGGB10_U + PRGGB10_D) >> 2;
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r = *psrc;
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}
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}
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else {
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if (xs&1) {
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b = *psrc;
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g = (unsigned int)(PRGGB10_L + PRGGB10_R + PRGGB10_U + PRGGB10_D) >> 2;
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r = (unsigned int)(PRGGB10_UL + PRGGB10_DL + PRGGB10_UR + PRGGB10_UL) >> 2;
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}
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else {
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b = (unsigned int)(PRGGB10_L + PRGGB10_R) >> 1;
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g = *psrc;
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r = (unsigned int)(PRGGB10_U + PRGGB10_D) >> 1;
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}
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}
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}
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// copy pixel to destination 24RGB
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if (pdst) {
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pdst[0] = (r >> 2);
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pdst[1] = (g >> 2);
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pdst[2] = (b >> 2);
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pdst += 3;
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}
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// copy pixel to destination float
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if (pdstf) {
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pdstf[0] = ((float)r / 1023.0);
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pdstf[1] = ((float)g / 1023.0);
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pdstf[2] = ((float)b / 1023.0);
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pdstf += 3;
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}
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psrc += 1;
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}
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}
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};
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void debayer_rggb10 (uint8_t *src, int src_w, int src_h, uint8_t *dst, float *dstf, int dst_w, int dst_h) {
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// RR GG RR GG
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// GG BB GG BB
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// RR GG RR GG
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// GG BB GG BB
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int xs, ys, xd, yd;
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uint32_t r, g, b, data;
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int max = dst_w * dst_h * 3;
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uint8_t *pdst = NULL;
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float *pdstf = NULL;
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uint16_t *psrc;
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int max_r = 0;
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int max_g = 0;
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int max_b = 0;
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pdst = dst;
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pdstf = dstf;
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for (ys = 0, yd = 0, psrc = (uint16_t*)src; ys < dst_h; ys++, yd++) {
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r = 0;
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g = 0;
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b = 0;
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for (xs = 0, xd = 0; xd < dst_w; xs++, xd++) {
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r = 0; b = 0; g = 0;
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if (ys > 0 && ys < src_h-1 && xs > 0 && xs < src_w-1) {
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if (ys&1) {
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if (xs&1) {
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b = *psrc;
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g = (unsigned int)(PRGGB10_L + PRGGB10_R + PRGGB10_U + PRGGB10_D) >> 2;
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r = (unsigned int)(PRGGB10_UL + PRGGB10_DL + PRGGB10_UR + PRGGB10_UL) >> 2;
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}
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else {
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b = (unsigned int)(PRGGB10_L + PRGGB10_R) >> 1;
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g = *psrc;
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r = (unsigned int)(PRGGB10_U + PRGGB10_D) >> 1;
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}
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}
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else {
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if (xs&1) {
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b = (unsigned int)(PRGGB10_U + PRGGB10_D) >> 1;
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g = *psrc;
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r = (unsigned int)(PRGGB10_L + PRGGB10_R) >> 1;
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}
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else {
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g = (unsigned int)(PRGGB10_L + PRGGB10_R + PRGGB10_U + PRGGB10_D) >> 2;
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b = (unsigned int)(PRGGB10_UL + PRGGB10_DL + PRGGB10_UR + PRGGB10_UL) >> 2;
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r = *psrc;
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}
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}
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}
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// copy pixel to destination 24RGB
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if (pdst) {
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pdst[0] = (r >> 2);
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pdst[1] = (g >> 2);
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pdst[2] = (b >> 2);
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pdst += 3;
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}
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// copy pixel to destination float
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if (pdstf) {
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pdstf[0] = ((float)r / 1023.0);
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pdstf[1] = ((float)g / 1023.0);
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pdstf[2] = ((float)b / 1023.0);
|
|
pdstf += 3;
|
|
}
|
|
psrc += 1;
|
|
}
|
|
}
|
|
};
|