megapixels: Implement quick-debayering all Bayer 8-bits pixel formats
This application was supporting only debayering of BGGR8 streams: this is an issue on cameras that are outputting a different format. Implement quick-debayering of all Bayer 8-bits pixfmts in order to solve wrong tint issues on many, many camera sensors. This was tested on a Sony Exmor-RS IMX300 sensor. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
This commit is contained in:
AngeloGioacchino Del Regno
Martijn Braam
parent
6a5f1078ef
commit
b56182ca33
8
main.c
8
main.c
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@ -610,7 +610,9 @@ process_image(const int *p, int size)
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}
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pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, current.width / (skip*2), current.height / (skip*2));
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pixels = gdk_pixbuf_get_pixels(pixbuf);
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quick_debayer_bggr8((const uint8_t *)p, pixels, current.width, current.height, skip, current.blacklevel);
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quick_debayer((const uint8_t *)p, pixels, current.fmt,
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current.width, current.height, skip,
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current.blacklevel);
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if (current.rotate == 0) {
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pixbufrot = pixbuf;
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@ -765,7 +767,9 @@ process_image(const int *p, int size)
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// Update the thumbnail if this is the last frame
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pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, current.width / (skip*2), current.height / (skip*2));
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pixels = gdk_pixbuf_get_pixels(pixbuf);
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quick_debayer_bggr8((const uint8_t *)p, pixels, current.width, current.height, skip, current.blacklevel);
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quick_debayer((const uint8_t *)p, pixels, current.fmt,
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current.width, current.height, skip,
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current.blacklevel);
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if (current.rotate == 0) {
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pixbufrot = pixbuf;
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@ -1,43 +1,77 @@
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/*
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* Fast but bad debayer method that scales and rotates by skipping source
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* pixels and doesn't interpolate any values at all
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*/
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#include <linux/videodev2.h>
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#include "quickdebayer.h"
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// Fast but bad debayer method that scales and rotates by skipping source pixels and
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// doesn't interpolate any values at all
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/* Linear -> sRGB lookup table */
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static const int srgb[] = {
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0, 12, 21, 28, 33, 38, 42, 46, 49, 52, 55, 58, 61, 63, 66, 68, 70,
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73, 75, 77, 79, 81, 82, 84, 86, 88, 89, 91, 93, 94, 96, 97, 99, 100,
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102, 103, 104, 106, 107, 109, 110, 111, 112, 114, 115, 116, 117, 118,
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120, 121, 122, 123, 124, 125, 126, 127, 129, 130, 131, 132, 133, 134,
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135, 136, 137, 138, 139, 140, 141, 142, 142, 143, 144, 145, 146, 147,
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148, 149, 150, 151, 151, 152, 153, 154, 155, 156, 157, 157, 158, 159,
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160, 161, 161, 162, 163, 164, 165, 165, 166, 167, 168, 168, 169, 170,
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171, 171, 172, 173, 174, 174, 175, 176, 176, 177, 178, 179, 179, 180,
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181, 181, 182, 183, 183, 184, 185, 185, 186, 187, 187, 188, 189, 189,
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190, 191, 191, 192, 193, 193, 194, 194, 195, 196, 196, 197, 197, 198,
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199, 199, 200, 201, 201, 202, 202, 203, 204, 204, 205, 205, 206, 206,
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207, 208, 208, 209, 209, 210, 210, 211, 212, 212, 213, 213, 214, 214,
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215, 215, 216, 217, 217, 218, 218, 219, 219, 220, 220, 221, 221, 222,
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222, 223, 223, 224, 224, 225, 226, 226, 227, 227, 228, 228, 229, 229,
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230, 230, 231, 231, 232, 232, 233, 233, 234, 234, 235, 235, 236, 236,
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237, 237, 237, 238, 238, 239, 239, 240, 240, 241, 241, 242, 242, 243,
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243, 244, 244, 245, 245, 245, 246, 246, 247, 247, 248, 248, 249, 249,
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250, 250, 251, 251, 251, 252, 252, 253, 253, 254, 254, 255
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};
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void
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quick_debayer_bggr8(const uint8_t *source, uint8_t *destination, int width, int height, int skip, int blacklevel)
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static void quick_debayer_set_dst(uint8_t *dst, uint8_t p0, uint8_t p1,
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uint8_t p2)
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{
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dst[0] = p0;
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dst[1] = p1;
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dst[2] = p2;
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}
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void quick_debayer(const uint8_t *source, uint8_t *destination,
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uint32_t pix_fmt, int width, int height, int skip,
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int blacklevel)
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{
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int byteskip = 2 * skip;
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int input_size = width * height;
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int output_size = (width/byteskip) * (height/byteskip);
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int i;
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int j=0;
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int i = 0, j = 0;
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int row_left = width;
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// Linear -> sRGB lookup table
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static int srgb[] = {
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0, 12, 21, 28, 33, 38, 42, 46, 49, 52, 55, 58, 61, 63, 66, 68, 70, 73, 75, 77, 79,
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81, 82, 84, 86, 88, 89, 91, 93, 94, 96, 97, 99, 100, 102, 103, 104, 106, 107, 109,
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110, 111, 112, 114, 115, 116, 117, 118, 120, 121, 122, 123, 124, 125, 126, 127, 129,
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130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 142, 143, 144, 145,
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146, 147, 148, 149, 150, 151, 151, 152, 153, 154, 155, 156, 157, 157, 158, 159, 160,
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161, 161, 162, 163, 164, 165, 165, 166, 167, 168, 168, 169, 170, 171, 171, 172, 173,
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174, 174, 175, 176, 176, 177, 178, 179, 179, 180, 181, 181, 182, 183, 183, 184, 185,
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185, 186, 187, 187, 188, 189, 189, 190, 191, 191, 192, 193, 193, 194, 194, 195, 196,
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196, 197, 197, 198, 199, 199, 200, 201, 201, 202, 202, 203, 204, 204, 205, 205, 206,
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206, 207, 208, 208, 209, 209, 210, 210, 211, 212, 212, 213, 213, 214, 214, 215, 215,
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216, 217, 217, 218, 218, 219, 219, 220, 220, 221, 221, 222, 222, 223, 223, 224, 224,
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225, 226, 226, 227, 227, 228, 228, 229, 229, 230, 230, 231, 231, 232, 232, 233, 233,
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234, 234, 235, 235, 236, 236, 237, 237, 237, 238, 238, 239, 239, 240, 240, 241, 241,
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242, 242, 243, 243, 244, 244, 245, 245, 245, 246, 246, 247, 247, 248, 248, 249, 249,
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250, 250, 251, 251, 251, 252, 252, 253, 253, 254, 254, 255
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};
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do {
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uint8_t b0 = srgb[source[i] - blacklevel];
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uint8_t b1 = srgb[source[i + 1] - blacklevel];
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uint8_t b2 = srgb[source[i + width + 1] - blacklevel];
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switch (pix_fmt) {
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case V4L2_PIX_FMT_SBGGR8:
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quick_debayer_set_dst(&destination[j],
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b2, b1, b0);
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break;
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case V4L2_PIX_FMT_SGBRG8:
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quick_debayer_set_dst(&destination[j],
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b1, b2, b0);
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break;
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case V4L2_PIX_FMT_SGRBG8:
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quick_debayer_set_dst(&destination[j],
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b1, b0, b2);
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break;
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case V4L2_PIX_FMT_SRGGB8:
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/* fall through */
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default:
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quick_debayer_set_dst(&destination[j],
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b0, b1, b2);
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break;
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}
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j += 3;
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// B G
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// G R
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for(i=0;i<input_size;) {
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destination[j++] = srgb[source[i+width+1] - blacklevel];
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destination[j++] = srgb[source[i+1] - blacklevel];
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destination[j++] = srgb[source[i] - blacklevel];
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i = i + byteskip;
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row_left = row_left - byteskip;
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if(row_left < byteskip){
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@ -46,5 +80,5 @@ quick_debayer_bggr8(const uint8_t *source, uint8_t *destination, int width, int
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i = i + width;
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i = i + (width * 2 * (skip-1));
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}
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}
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} while (i < input_size);
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}
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@ -1,4 +1,5 @@
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#include <stdint.h>
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void quick_debayer_bggr8(const uint8_t *source, uint8_t *destination, int width, int height, int skip, int blacklevel);
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void quick_debayer(const uint8_t *source, uint8_t *destination,
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uint32_t pix_fmt, int width, int height, int skip,
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int blacklevel);
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