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От: |
DiPaolo
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| Дата: | 04.10.22 14:40 | ||
| Оценка: | |||
biHeight
Specifies the height of the bitmap, in pixels.
For uncompressed RGB bitmaps, if biHeight is positive, the bitmap is a bottom-up DIB with the origin at the lower left corner. If biHeight is negative, the bitmap is a top-down DIB with the origin at the upper left corner.
For YUV bitmaps, the bitmap is always top-down, regardless of the sign of biHeight. Decoders should offer YUV formats with positive biHeight, but for backward compatibility they should accept YUV formats with either positive or negative biHeight.
For compressed formats, biHeight must be positive, regardless of image orientation.