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megapixels
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Improved debayer implementation

This commit is contained in:
Martijn Braam 2020-09-16 13:39:12 +02:00
parent 243ef89cb5
commit 9871fe602d
2 changed files with 11 additions and 5 deletions
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10
main.c
View File

@ -363,6 +363,7 @@ process_image(const int *p, int size)
double scale;
cairo_t *cr;
t = clock();
int skip = 2;
dc1394bayer_method_t method = DC1394_BAYER_METHOD_DOWNSAMPLE;
dc1394color_filter_t filter = DC1394_COLOR_FILTER_BGGR;
@ -374,9 +375,12 @@ process_image(const int *p, int size)
pixels = gdk_pixbuf_get_pixels(pixbuf);
dc1394_bayer_decoding_8bit((const uint8_t *) p, pixels, current_width, current_height, filter, method);
} else {
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, current_width / 6, current_height / 6);
if(current_width > 1280) {
skip = 3;
}
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, current_width / (skip*2), current_height / (skip*2));
pixels = gdk_pixbuf_get_pixels(pixbuf);
quick_debayer_bggr8((const uint8_t *)p, pixels, current_width, current_height, 3);
quick_debayer_bggr8((const uint8_t *)p, pixels, current_width, current_height, skip);
}
if (current_rotate == 0) {
@ -413,7 +417,7 @@ process_image(const int *p, int size)
capture = 0;
t = clock() - t;
time_taken = ((double) t) / CLOCKS_PER_SEC;
printf("%f fps\n", 1.0 / time_taken);
//printf("%f fps\n", 1.0 / time_taken);
}
static gboolean

6
quickdebayer.c
View File

@ -8,6 +8,7 @@ quick_debayer_bggr8(const uint8_t *source, uint8_t *destination, int width, int
{
int byteskip = 2 * skip;
int input_size = width * height;
int output_size = (width/byteskip) * (height/byteskip);
int i;
int j=0;
int row_left = width;
@ -20,9 +21,10 @@ quick_debayer_bggr8(const uint8_t *source, uint8_t *destination, int width, int
destination[j++] = source[i];
i = i + byteskip;
row_left = row_left - byteskip;
if(row_left <= 0){
if(row_left < byteskip){
i = i + row_left;
row_left = width;
i = i+width;
i = i + width;
i = i + (width * 2 * (skip-1));
}
}