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megapixels
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zbar_pipeline: Add support for 10-bit packed format processing

This commit is contained in:
Yassine Oudjana 2022-01-09 15:02:35 +04:00
parent b980eb5aea
commit f8ce7abe98
1 changed files with 43 additions and 4 deletions
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47
src/zbar_pipeline.c
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@ -174,7 +174,11 @@ process_image(MPPipeline *pipeline, MPZBarImage **_image)
assert(image->pixel_format == MP_PIXEL_FMT_BGGR8 ||
image->pixel_format == MP_PIXEL_FMT_GBRG8 ||
image->pixel_format == MP_PIXEL_FMT_GRBG8 ||
image->pixel_format == MP_PIXEL_FMT_RGGB8);
image->pixel_format == MP_PIXEL_FMT_RGGB8 ||
image->pixel_format == MP_PIXEL_FMT_BGGR10P ||
image->pixel_format == MP_PIXEL_FMT_GBRG10P ||
image->pixel_format == MP_PIXEL_FMT_GRBG10P ||
image->pixel_format == MP_PIXEL_FMT_RGGB10P);
// Create a grayscale image for scanning from the current preview.
// Rotate/mirror correctly.
@ -182,11 +186,46 @@ process_image(MPPipeline *pipeline, MPZBarImage **_image)
int height = image->height / 2;
uint8_t *data = malloc(width * height * sizeof(uint8_t));
size_t row_length =
mp_pixel_format_width_to_bytes(image->pixel_format, image->width);
size_t i = 0;
for (int y = 0; y < image->height; y += 2) {
for (int x = 0; x < image->width; x += 2) {
data[i++] = image->data[x + image->width * y];
size_t offset;
switch (image->pixel_format) {
case MP_PIXEL_FMT_BGGR8:
case MP_PIXEL_FMT_GBRG8:
case MP_PIXEL_FMT_GRBG8:
case MP_PIXEL_FMT_RGGB8:
for (int y = 0; y < image->height; y += 2) {
for (int x = 0; x < row_length; x += 2) {
data[i++] = image->data[x + row_length * y];
}
}
break;
case MP_PIXEL_FMT_BGGR10P:
case MP_PIXEL_FMT_GBRG10P:
case MP_PIXEL_FMT_GRBG10P:
case MP_PIXEL_FMT_RGGB10P:
// Skip 5th byte of each 4-pixel segment by incrementing an
// offset every time a 5th byte is reached, making the
// X coordinate land on the next byte:
//
// image->data | | | | X | | | | X | | | | X | | | | X | ...
// x 0 2 4 6 8 10 12 14 16 18 20 ...
// offset 0 1 2 3 4 5 ...
// > ---> -----> ------->
// x + offset 0 2 4 6 8 10 12 16 18 ...
for (int y = 0; y < image->height; y += 2) {
offset = 0;
for (int x = 0; x < image->width; x += 2) {
if (x % 4 == 0)
offset += 1;
data[i++] = image->data[x + offset + row_length * y];
}
}
break;
default:
assert(0);
}
// Create image for zbar