This commit is contained in:
Mike Jerris
2016-09-27 13:08:00 -04:00
parent d6bf6705de
commit 93591e2f47
93 changed files with 3194 additions and 2023 deletions

View File

@@ -417,8 +417,14 @@ void ScaleColsUp2_16_C(uint16* dst_ptr, const uint16* src_ptr,
}
// (1-f)a + fb can be replaced with a + f(b-a)
#if defined(__arm__) || defined(__aarch64__)
#define BLENDER(a, b, f) (uint8)((int)(a) + \
((int)(f) * ((int)(b) - (int)(a)) >> 16))
((((int)((f)) * ((int)(b) - (int)(a))) + 0x8000) >> 16))
#else
// Intel uses 7 bit math with rounding.
#define BLENDER(a, b, f) (uint8)((int)(a) + \
(((int)((f) >> 9) * ((int)(b) - (int)(a)) + 0x40) >> 7))
#endif
void ScaleFilterCols_C(uint8* dst_ptr, const uint8* src_ptr,
int dst_width, int x, int dx) {
@@ -470,8 +476,9 @@ void ScaleFilterCols64_C(uint8* dst_ptr, const uint8* src_ptr,
}
#undef BLENDER
// Same as 8 bit arm blender but return is cast to uint16
#define BLENDER(a, b, f) (uint16)((int)(a) + \
((int)(f) * ((int)(b) - (int)(a)) >> 16))
((((int)((f)) * ((int)(b) - (int)(a))) + 0x8000) >> 16))
void ScaleFilterCols_16_C(uint16* dst_ptr, const uint16* src_ptr,
int dst_width, int x, int dx) {
@@ -809,6 +816,7 @@ void ScaleARGBColsUp2_C(uint8* dst_argb, const uint8* src_argb,
}
}
// TODO(fbarchard): Replace 0x7f ^ f with 128-f. bug=607.
// Mimics SSSE3 blender
#define BLENDER1(a, b, f) ((a) * (0x7f ^ f) + (b) * f) >> 7
#define BLENDERC(a, b, f, s) (uint32)( \