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MiniWebCam
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working on debayer 10 bit packet

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Steffen Pohle 3 months ago
parent f1eef750b9
commit 77bb99550e
5 changed files with 137 additions and 10 deletions
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2
Makefile
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@ -15,7 +15,7 @@ LDFLAGS= -lUDPTCPNetwork -L/usr/local/lib -ljpeg
OBJFILES= webserver.o configuration.o main.o video.o convert.o debayer.o inmemoryfile.o videoframe.o
all: dep miniwebcam
miniwebcam: dep $(OBJFILES)
miniwebcam: $(OBJFILES)
$(CXX) $(OBJFILES) -o $@ -L./ -I./ $(LDFLAGS)
install: miniwebcam

20
convert.cc
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@ -16,7 +16,7 @@
#include "configuration.h"
#include "debayer.h"
int debayer_mode = 0; // testing 0 or 1
int debayer_mode = 1; // testing 0 or 1
uint32_t convert_pixelformats [] = {
V4L2_PIX_FMT_MJPEG,
@ -28,7 +28,7 @@ uint32_t convert_pixelformats [] = {
V4L2_PIX_FMT_UYVY,
V4L2_PIX_FMT_SGRBG16,
V4L2_PIX_FMT_SRGGB10P,
V4L2_PIX_FMT_SBGGR10,
V4L2_PIX_FMT_SRGGB10,
V4L2_PIX_FMT_SRGGB8,
V4L2_PIX_FMT_SGRBG8,
0
@ -104,6 +104,8 @@ int Convert (ConvertData *cdata, VideoFrame *dest, unsigned char *ptrsrc, int sr
unsigned char cb, cr, y1;
unsigned char *ptrdst = NULL;
debug ("srcsize:%d pixfmt:%s size: %dx%d", srcsize, convert_from_pixelformat(pixelformat).c_str(), srcw, srch);
struct jpg_error_mgr jerr;
if (cdata == NULL) return 0;
@ -221,6 +223,13 @@ int Convert (ConvertData *cdata, VideoFrame *dest, unsigned char *ptrsrc, int sr
}
break;
case (V4L2_PIX_FMT_SGRBG16):
if (debayer_mode == 0)
debayer_grbg16_simple ((uint16_t *)ptrsrc, srcw, srch, ptrdst, srcw, srch);
else
debayer_grbg16_bilinear ((uint16_t *)ptrsrc, srcw, srch, ptrdst, srcw, srch);
break;
case (V4L2_PIX_FMT_SRGGB10P):
if (debayer_mode == 0)
debayer_rggb10packet_simple ((uint8_t *)ptrsrc, srcw, srch, ptrdst, srcw, srch);
@ -228,13 +237,14 @@ int Convert (ConvertData *cdata, VideoFrame *dest, unsigned char *ptrsrc, int sr
debayer_rggb10packet_bilinear ((uint8_t *)ptrsrc, srcw, srch, ptrdst, srcw, srch);
break;
case (V4L2_PIX_FMT_SGRBG16):
case (V4L2_PIX_FMT_SRGGB10):
if (debayer_mode == 0)
debayer_grbg16_simple ((uint16_t *)ptrsrc, srcw, srch, ptrdst, srcw, srch);
debayer_rggb10_simple ((uint8_t *)ptrsrc, srcw, srch, ptrdst, srcw, srch);
else
debayer_grbg16_bilinear ((uint16_t *)ptrsrc, srcw, srch, ptrdst, srcw, srch);
debayer_rggb10_bilinear ((uint8_t *)ptrsrc, srcw, srch, ptrdst, srcw, srch);
break;
case (V4L2_PIX_FMT_SRGGB8):
case (V4L2_PIX_FMT_SGRBG8):
if (debayer_mode == 0)

112
debayer.cc
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@ -1,5 +1,10 @@
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <string>
std::string toBits(unsigned int i, int maxbits);
/*
The function converts a 16bit GRBG 2x2 CFA coded image into an 8bit
@ -365,14 +370,121 @@ void debayer_grbg8_bilinear (uint8_t * src, int src_w, int src_h,
STORE8;
}
#define P_U (*(psrc-src_w*(10/8)))
#define P_D (*(psrc+src_w*(10/8)))
#define P_L (*(psrc-1))
#define P_R (*(psrc+1))
#define P_UL (*(psrc-1-src_w*(10/8)))
#define P_UR (*(psrc+1-src_w*(10/8)))
#define P_DL (*(psrc-1+src_w*(10/8)))
#define P_DR (*(psrc+1+src_w*(10/8)))
void debayer_rggb10packet_simple (uint8_t * src, int src_w, int src_h,
uint8_t * dst, int dst_w, int dst_h) {
int s, d;
int xs, ys, xd, yd;
unsigned char r, g, b;
int max = dst_w * dst_h * 3;
unsigned char *pdst;
unsigned char *psrc;
int shift;
printf ("%s:%d src size:%dx%d dst size:%dx%d\n", __FILE__, __LINE__, src_w, src_h, dst_w, dst_h);
// RR GG RR GG RR
// GG BB GG BB GG
// RR GG RR GG RR
// GG BB GG BB GG
for (ys = 0, yd = 0, psrc = src, pdst = dst; ys < dst_h; ys++, yd++) {
r = 0;
g = 0;
b = 0;
for (xs = 0, xd = 0; xd < dst_w; xs++, xd++) {
r = 0; b = 0; g = 0;
if (ys > 0 && ys < src_h-1 && xs > 0 && xs < src_w-1) {
if (ys&1) {
if (xs&1) {
b = *psrc;
g = (P_L + P_R + P_U + P_D)/4;
r = (P_UL + P_DL + P_UR + P_UL)/4;
}
else {
b = (P_L + P_R)/2;
g = *psrc;
r = (P_U + P_D)/2;
}
}
else {
if (xs&1) {
b = (P_U + P_D)/2;
g = *psrc;
r = (P_L + P_R)/2;
}
else {
g = (P_L + P_R + P_U + P_D)/4;
b = (P_UL + P_DL + P_UR + P_UL)/4;
r = *psrc;
}
}
}
if (pdst - dst > max) {
printf ("debayer error. dpst out of bounds size:%dx%d pos:%dx%d \n", dst_w, dst_h, xd, yd);
}
if ((ys == 10 || ys == 11) && xs < 10) printf ("%dx%d - %d, %d, %d\n", xs, ys, r, g, b);
pdst[0] = r;
pdst[1] = g;
pdst[2] = b;
pdst += 3;
psrc++;
// if (xs >= src_w -1) psrc += src_w / 4;
if (xs && (xs % 4 == 0)) psrc++;
}
}
};
std::string toBits(unsigned int i, int maxbits) {
int b;
std::string out = "";
for (b = 0; b < maxbits; b++) {
if (b % 8 == 0 && b) out = ":" + out;
if (i % 2) out = "1" + out;
else out = "0" + out;
i = i >> 1;
}
return out;
}
void debayer_rggb10packet_bilinear (uint8_t * src, int src_w, int src_h,
uint8_t * dst, int dst_w, int dst_h) {
debayer_rggb10packet_simple (src, src_w, src_h, dst, dst_w, dst_h);
};
void debayer_rggb10_simple (uint8_t * src, int src_w, int src_h,
uint8_t * dst, int dst_w, int dst_h) {
int s, d;
for (s = 0, d = 0; d < dst_w * dst_h * 3; d++) {
dst[d] = src[s];
if (++s >= src_h * src_h) s = 0;
}
};
void debayer_rggb10_bilinear (uint8_t * src, int src_w, int src_h,
uint8_t * dst, int dst_w, int dst_h) {
int s, d;
for (s = 0, d = 0; d < dst_w * dst_h * 3; d++) {
dst[d] = src[s];
if (++s >= src_h * src_h) s = 0;
}
};

5
debayer.h
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@ -18,4 +18,9 @@ void debayer_rggb10packet_simple (uint8_t * src, int src_w, int src_h,
void debayer_rggb10packet_bilinear (uint8_t * src, int src_w, int src_h,
uint8_t * dst, int dst_w, int dst_h);
void debayer_rggb10_simple (uint8_t * src, int src_w, int src_h,
uint8_t * dst, int dst_w, int dst_h);
void debayer_rggb10_bilinear (uint8_t * src, int src_w, int src_h,
uint8_t * dst, int dst_w, int dst_h);
#endif

2
webserver.cc
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@ -48,7 +48,7 @@ std::string GenerateHtmlFile() {
res += " src = src + '?' + new Date().getTime();\n";
res += " img.src = src;\n";
res += "}\n\n";
res += "setInterval(reloadImage, 1000);\n";
res += "setInterval(reloadImage, 5000);\n";
res += "\n\n";
res += "</script>\n";
res += "</body></html>";

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