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Re-enable zbar, don't crash application if using an unsupported pixel format for preview for zbar

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This commit is contained in:
Kristian Vos
2024-07-01 12:48:55 +02:00
parent e41dc80a71
commit db188f2db7
1 changed files with 40 additions and 39 deletions
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79
src/zbar_pipeline.c
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@@ -183,49 +183,51 @@ process_image(MPPipeline *pipeline, MPZBarImage **_image)
libmegapixels_mode_width_to_bytes(image->format, image->width);
int padding_bytes =
libmegapixels_mode_width_to_padding(image->format, image->width);
uint32_t pixel_format = libmegapixels_format_to_v4l_pixfmt(image->format);
size_t i = 0, padding_offset = 0;
size_t offset;
/* TODO: implement
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 + padding_offset +
row_length * y];
switch (pixel_format) {
case V4L2_PIX_FMT_SBGGR8:
case V4L2_PIX_FMT_SGBRG8:
case V4L2_PIX_FMT_SGRBG8:
case V4L2_PIX_FMT_SRGGB8:
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 V4L2_PIX_FMT_SBGGR10P:
case V4L2_PIX_FMT_SGBRG10P:
case V4L2_PIX_FMT_SGRBG10P:
case V4L2_PIX_FMT_SRGGB10P:
// 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;
// Skip padding
padding_offset += padding_bytes * 2;
}
break;
default:
assert(0);
data[i++] = image->data[x + offset + padding_offset +
row_length * y];
}
// Skip padding
padding_offset += padding_bytes * 2;
}
break;
default:
printf("Preview pixel format not supported - zbar won't work\n");
return;
}
// Create image for zbar
@@ -261,7 +263,6 @@ process_image(MPPipeline *pipeline, MPZBarImage **_image)
mp_zbar_image_unref(image);
++frames_processed;
*/
}
void