From: Christian König <christian.koe...@amd.com>
Signed-off-by: Christian König <christian.koe...@amd.com>
---
src/gallium/auxiliary/vl/vl_vlc.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/gallium/auxiliary/vl/vl_vlc.h
b/src/gallium/auxiliary/vl/vl_vlc.h
index 0dc1df9..9f67ba9 100644
--- a/src/gallium/auxiliary/vl/vl_vlc.h
+++ b/src/gallium/auxiliary/vl/vl_vlc.h
@@ -338,4 +338,16 @@ vl_vlc_search_byte(struct vl_vlc *vlc, unsigned num_bits,
uint8_t value)
}
}
+/**
+ * remove num_bits bits starting at pos from the bitbuffer
+ */
+static INLINE void
+vl_vlc_removebits(struct vl_vlc *vlc, unsigned pos, unsigned num_bits)
+{
+ uint64_t lo = (vlc->buffer & (~0UL >> (pos + num_bits))) << num_bits;
+ uint64_t hi = (vlc->buffer & (~0UL << (64 - pos)));
+ vlc->buffer = lo | hi;
+ vlc->invalid_bits += num_bits;
+}
+
#endif /* vl_vlc_h */
--
1.8.1.2
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