2x down sample for UV planes ported to SSSE3 / NEON

Bug: libuyv:838
Change-Id: Id9fb3282a3e86143d76b5e0cb557f0523a88b3c8
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2465578
Reviewed-by: richard winterton <rrwinterton@gmail.com>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>

1 files changed, 44 insertions, 32 deletions

diff --git a/include/libyuv/scale_row.h b/include/libyuv/scale_row.h
index 776dc383..9ebc1002 100644
--- a/include/libyuv/scale_row.h
+++ b/include/libyuv/scale_row.h
@@ -72,6 +72,13 @@ extern "C" {
 #define HAS_SCALEROWDOWN4_SSSE3
 #endif
 
+// The following are available for gcc/clang x86 platforms:
+// TODO(fbarchard): Port to Visual C
+#if !defined(LIBYUV_DISABLE_X86) && \
+    (defined(__x86_64__) || (defined(__i386__) && !defined(_MSC_VER)))
+#define HAS_SCALEUVROWDOWN2BOX_SSSE3
+#endif
+
 // The following are available on all x86 platforms, but
 // require VS2012, clang 3.4 or gcc 4.7.
 // The code supports NaCL but requires a new compiler and validator.
@@ -98,6 +105,11 @@ extern "C" {
 #define HAS_SCALEROWDOWN4_NEON
 #endif
 
+// The following are available on 64 bit Neon platforms:
+#if !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__)
+#define HAS_SCALEUVROWDOWN2BOX_NEON
+#endif
+
 #if !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa)
 #define HAS_SCALEADDROW_MSA
 #define HAS_SCALEARGBCOLS_MSA
@@ -830,15 +842,15 @@ void ScaleARGBRowDownEvenBox_Any_MMI(const uint8_t* src_ptr,
                                      int dst_width);
 
 // UV Row functions
-void ScaleUVRowDown2_SSE2(const uint8_t* src_uv,
+void ScaleUVRowDown2_SSSE3(const uint8_t* src_ptr,
                           ptrdiff_t src_stride,
                           uint8_t* dst_uv,
                           int dst_width);
-void ScaleUVRowDown2Linear_SSE2(const uint8_t* src_uv,
+void ScaleUVRowDown2Linear_SSSE3(const uint8_t* src_ptr,
                                 ptrdiff_t src_stride,
                                 uint8_t* dst_uv,
                                 int dst_width);
-void ScaleUVRowDown2Box_SSE2(const uint8_t* src_uv,
+void ScaleUVRowDown2Box_SSSE3(const uint8_t* src_ptr,
                              ptrdiff_t src_stride,
                              uint8_t* dst_uv,
                              int dst_width);
@@ -846,7 +858,7 @@ void ScaleUVRowDown2_NEON(const uint8_t* src_ptr,
                           ptrdiff_t src_stride,
                           uint8_t* dst,
                           int dst_width);
-void ScaleUVRowDown2Linear_NEON(const uint8_t* src_uv,
+void ScaleUVRowDown2Linear_NEON(const uint8_t* src_ptr,
                                 ptrdiff_t src_stride,
                                 uint8_t* dst_uv,
                                 int dst_width);
@@ -854,42 +866,42 @@ void ScaleUVRowDown2Box_NEON(const uint8_t* src_ptr,
                              ptrdiff_t src_stride,
                              uint8_t* dst,
                              int dst_width);
-void ScaleUVRowDown2_MSA(const uint8_t* src_uv,
+void ScaleUVRowDown2_MSA(const uint8_t* src_ptr,
                          ptrdiff_t src_stride,
                          uint8_t* dst_uv,
                          int dst_width);
-void ScaleUVRowDown2Linear_MSA(const uint8_t* src_uv,
+void ScaleUVRowDown2Linear_MSA(const uint8_t* src_ptr,
                                ptrdiff_t src_stride,
                                uint8_t* dst_uv,
                                int dst_width);
-void ScaleUVRowDown2Box_MSA(const uint8_t* src_uv,
+void ScaleUVRowDown2Box_MSA(const uint8_t* src_ptr,
                             ptrdiff_t src_stride,
                             uint8_t* dst_uv,
                             int dst_width);
-void ScaleUVRowDown2_MMI(const uint8_t* src_uv,
+void ScaleUVRowDown2_MMI(const uint8_t* src_ptr,
                          ptrdiff_t src_stride,
                          uint8_t* dst_uv,
                          int dst_width);
-void ScaleUVRowDown2Linear_MMI(const uint8_t* src_uv,
+void ScaleUVRowDown2Linear_MMI(const uint8_t* src_ptr,
                                ptrdiff_t src_stride,
                                uint8_t* dst_uv,
                                int dst_width);
-void ScaleUVRowDown2Box_MMI(const uint8_t* src_uv,
+void ScaleUVRowDown2Box_MMI(const uint8_t* src_ptr,
                             ptrdiff_t src_stride,
                             uint8_t* dst_uv,
                             int dst_width);
-void ScaleUVRowDown2_Any_SSE2(const uint8_t* src_ptr,
-                              ptrdiff_t src_stride,
-                              uint8_t* dst_ptr,
-                              int dst_width);
-void ScaleUVRowDown2Linear_Any_SSE2(const uint8_t* src_ptr,
-                                    ptrdiff_t src_stride,
-                                    uint8_t* dst_ptr,
-                                    int dst_width);
-void ScaleUVRowDown2Box_Any_SSE2(const uint8_t* src_ptr,
-                                 ptrdiff_t src_stride,
-                                 uint8_t* dst_ptr,
-                                 int dst_width);
+void ScaleUVRowDown2_Any_SSSE3(const uint8_t* src_ptr,
+                               ptrdiff_t src_stride,
+                               uint8_t* dst_ptr,
+                               int dst_width);
+void ScaleUVRowDown2Linear_Any_SSSE3(const uint8_t* src_ptr,
+                                     ptrdiff_t src_stride,
+                                     uint8_t* dst_ptr,
+                                     int dst_width);
+void ScaleUVRowDown2Box_Any_SSSE3(const uint8_t* src_ptr,
+                                  ptrdiff_t src_stride,
+                                  uint8_t* dst_ptr,
+                                  int dst_width);
 void ScaleUVRowDown2_Any_NEON(const uint8_t* src_ptr,
                               ptrdiff_t src_stride,
                               uint8_t* dst_ptr,
@@ -926,52 +938,52 @@ void ScaleUVRowDown2Box_Any_MMI(const uint8_t* src_ptr,
                                 ptrdiff_t src_stride,
                                 uint8_t* dst_ptr,
                                 int dst_width);
-void ScaleUVRowDownEven_SSE2(const uint8_t* src_uv,
+void ScaleUVRowDownEven_SSSE3(const uint8_t* src_ptr,
                              ptrdiff_t src_stride,
                              int src_stepx,
                              uint8_t* dst_uv,
                              int dst_width);
-void ScaleUVRowDownEvenBox_SSE2(const uint8_t* src_uv,
+void ScaleUVRowDownEvenBox_SSSE3(const uint8_t* src_ptr,
                                 ptrdiff_t src_stride,
                                 int src_stepx,
                                 uint8_t* dst_uv,
                                 int dst_width);
-void ScaleUVRowDownEven_NEON(const uint8_t* src_uv,
+void ScaleUVRowDownEven_NEON(const uint8_t* src_ptr,
                              ptrdiff_t src_stride,
                              int src_stepx,
                              uint8_t* dst_uv,
                              int dst_width);
-void ScaleUVRowDownEvenBox_NEON(const uint8_t* src_uv,
+void ScaleUVRowDownEvenBox_NEON(const uint8_t* src_ptr,
                                 ptrdiff_t src_stride,
                                 int src_stepx,
                                 uint8_t* dst_uv,
                                 int dst_width);
-void ScaleUVRowDownEven_MSA(const uint8_t* src_uv,
+void ScaleUVRowDownEven_MSA(const uint8_t* src_ptr,
                             ptrdiff_t src_stride,
                             int32_t src_stepx,
                             uint8_t* dst_uv,
                             int dst_width);
-void ScaleUVRowDownEvenBox_MSA(const uint8_t* src_uv,
+void ScaleUVRowDownEvenBox_MSA(const uint8_t* src_ptr,
                                ptrdiff_t src_stride,
                                int src_stepx,
                                uint8_t* dst_uv,
                                int dst_width);
-void ScaleUVRowDownEven_MMI(const uint8_t* src_uv,
+void ScaleUVRowDownEven_MMI(const uint8_t* src_ptr,
                             ptrdiff_t src_stride,
                             int32_t src_stepx,
                             uint8_t* dst_uv,
                             int dst_width);
-void ScaleUVRowDownEvenBox_MMI(const uint8_t* src_uv,
+void ScaleUVRowDownEvenBox_MMI(const uint8_t* src_ptr,
                                ptrdiff_t src_stride,
                                int src_stepx,
                                uint8_t* dst_uv,
                                int dst_width);
-void ScaleUVRowDownEven_Any_SSE2(const uint8_t* src_ptr,
+void ScaleUVRowDownEven_Any_SSSE3(const uint8_t* src_ptr,
                                  ptrdiff_t src_stride,
                                  int src_stepx,
                                  uint8_t* dst_ptr,
                                  int dst_width);
-void ScaleUVRowDownEvenBox_Any_SSE2(const uint8_t* src_ptr,
+void ScaleUVRowDownEvenBox_Any_SSSE3(const uint8_t* src_ptr,
                                     ptrdiff_t src_stride,
                                     int src_stepx,
                                     uint8_t* dst_ptr,