[Spice-devel] [spice-common 05/14] quic: Remove configurable PRED

[Christophe Fergeau]

It's hardcoded at compile-time, and I don't think it was changed in
years...
---
 common/quic.c          |  1 -
 common/quic_rgb_tmpl.c | 31 -------------------------------
 common/quic_tmpl.c     | 38 --------------------------------------
 3 files changed, 70 deletions(-)

diff --git a/common/quic.c b/common/quic.c
index 58fb2c0..f779afb 100644
--- a/common/quic.c
+++ b/common/quic.c
@@ -31,7 +31,6 @@
 
 #define RLE
 #define RLE_STAT
-#define PRED_1
 #define QUIC_RGB
 
 /* ASCII "QUIC" */
diff --git a/common/quic_rgb_tmpl.c b/common/quic_rgb_tmpl.c
index 3ca649a..0a0a1ac 100644
--- a/common/quic_rgb_tmpl.c
+++ b/common/quic_rgb_tmpl.c
@@ -120,7 +120,6 @@
 #define CORRELATE_0(channel, curr, correlate, bpc_mask)\
     ((family.xlatL2U[correlate] + _PIXEL_A(channel, curr)) & bpc_mask)
 
-#ifdef PRED_1
 
 /*  (a+b)/2  */
 #define DECORRELATE(channel, prev, curr, bpc_mask, r)                                           \
@@ -130,36 +129,6 @@
 #define CORRELATE(channel, prev, curr, correlate, bpc_mask, r)                                  \
     SET_##channel(r, ((family.xlatL2U[correlate] +                                              \
           (int)((_PIXEL_A(channel, curr) + _PIXEL_B(channel, prev)) >> 1)) & bpc_mask))
-#endif
-
-#ifdef PRED_2
-
-/*  .75a+.75b-.5c  */
-#define DECORRELATE(channel, prev, curr, bpc_mask, r) {                         \
-    int p = ((int)(3 * (_PIXEL_A(channel, curr) + _PIXEL_B(channel, prev))) -   \
-                        (int)(_PIXEL_C(channel, prev) << 1)) >> 2;              \
-    if (p < 0) {                                                                \
-        p = 0;                                                                  \
-    } else if ((unsigned)p > bpc_mask) {                                        \
-        p = bpc_mask;                                                           \
-    }                                                                           \
-    r = family.xlatU2L[(unsigned)((int)GET_##channel(curr) - p) & bpc_mask];    \
-}
-
-#define CORRELATE(channel, prev, curr, correlate, bpc_mask, r) {                        \
-    const int p = ((int)(3 * (_PIXEL_A(channel, curr) + _PIXEL_B(channel, prev))) -     \
-                        (int)(_PIXEL_C(channel, prev) << 1) ) >> 2;                     \
-    const unsigned int s = family.xlatL2U[correlate];                                   \
-    if (!(p & ~bpc_mask)) {                                                             \
-        SET_##channel(r, (s + (unsigned)p) & bpc_mask);                                 \
-    } else if (p < 0) {                                                                 \
-        SET_##channel(r, s);                                                            \
-    } else {                                                                            \
-        SET_##channel(r, (s + bpc_mask) & bpc_mask);                                    \
-    }                                                                                   \
-}
-
-#endif
 
 
 #define COMPRESS_ONE_ROW0_0(channel)                                                \
diff --git a/common/quic_tmpl.c b/common/quic_tmpl.c
index 3c4dea3..be8f6dd 100644
--- a/common/quic_tmpl.c
+++ b/common/quic_tmpl.c
@@ -73,7 +73,6 @@ static inline void FNAME(correlate_0)(PIXEL *curr, const BYTE correlate,
     curr->a = (family.xlatL2U[correlate] + _PIXEL_A) & bpc_mask;
 }
 
-#ifdef PRED_1
 
 /*  (a+b)/2  */
 static inline BYTE FNAME(decorrelate)(const PIXEL *const prev, const PIXEL * const curr,
@@ -89,43 +88,6 @@ static inline void FNAME(correlate)(const PIXEL *prev, PIXEL *curr, const BYTE c
     curr->a = (family.xlatL2U[correlate] + (int)((_PIXEL_A + _PIXEL_B) >> 1)) & bpc_mask;
 }
 
-#endif
-
-#ifdef PRED_2
-
-/*  .75a+.75b-.5c  */
-static inline BYTE FNAME(decorrelate)(const PIXEL *const prev, const PIXEL * const curr,
-                                      const unsigned int bpc_mask)
-{
-    int p = ((int)(3 * (_PIXEL_A + _PIXEL_B)) - (int)(_PIXEL_C << 1)) >> 2;
-
-    if (p < 0) {
-        p = 0;
-    } else if ((unsigned)p > bpc_mask) {
-        p = bpc_mask;
-    }
-
-    {
-        return family.xlatU2L[(unsigned)((int)curr->a - p) & bpc_mask];
-    }
-}
-
-static inline void FNAME(correlate)(const PIXEL *prev, PIXEL *curr, const BYTE correlate,
-                                    const unsigned int bpc_mask)
-{
-    const int p = ((int)(3 * (_PIXEL_A + _PIXEL_B)) - (int)(_PIXEL_C << 1)) >> 2;
-    const unsigned int s = family.xlatL2U[correlate];
-
-    if (!(p & ~bpc_mask)) {
-        curr->a = (s + (unsigned)p) & bpc_mask;
-    } else if (p < 0) {
-        curr->a = s;
-    } else {
-        curr->a = (s + bpc_mask) & bpc_mask;
-    }
-}
-
-#endif
 
 static void FNAME(compress_row0_seg)(Encoder *encoder, Channel *channel, int i,
                                      const PIXEL * const cur_row,
-- 
2.13.0