SAME_PIXEL macro is used a lot for 32 bit images.
On such configuration the macro can be optimized quite a lot reading
and comparing the entire pixel instead of splitting the components
and comparing one by one.
Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
---
server/glz_encode_tmpl.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/server/glz_encode_tmpl.c b/server/glz_encode_tmpl.c
index 46dd1d4..27fbe8a 100644
--- a/server/glz_encode_tmpl.c
+++ b/server/glz_encode_tmpl.c
@@ -72,6 +72,7 @@
#define GET_g(pix) (((pix) >> 5) & 0x1f)
#define GET_b(pix) ((pix) & 0x1f)
#define ENCODE_PIXEL(e, pix) {encode(e, (pix) >> 8); encode(e, (pix) & 0xff);}
+#define SAME_PIXEL(p1, p2) ((((p1)^(p2))&0x7fffu)==0)
#define MIN_REF_ENCODE_SIZE 2
#define MAX_REF_ENCODE_SIZE 3
#define HASH_FUNC(v, p) { \
@@ -122,7 +123,11 @@
}
#endif
-#if defined(LZ_RGB16) || defined(LZ_RGB24) || defined(LZ_RGB32)
+#if defined(LZ_RGB32) && SPICE_ENDIAN == SPICE_ENDIAN_LITTLE
+#define SAME_PIXEL(p1,p2) ((((*(const uint32_t*)&(p1))^(*(const uint32_t*)&(p2)))&0xffffffu)==0)
+#elif defined(LZ_RGB32) && SPICE_ENDIAN == SPICE_ENDIAN_BIG
+#define SAME_PIXEL(p1,p2) ((((*(const uint32_t*)&(p1))^(*(const uint32_t*)&(p2)))&0xffffff00u)==0)
+#elif defined(LZ_RGB24) || defined(LZ_RGB32)
#define SAME_PIXEL(p1, p2) (GET_r(p1) == GET_r(p2) && GET_g(p1) == GET_g(p2) && \
GET_b(p1) == GET_b(p2))
--
2.4.3
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