I422Rotate update to remove name space for ios build warning

- Remove libyuv:: from within libyuv to resolve a build warning on IOS.
- Check src_y parameter is not NULL if there is a dst_y parameter
- Apply clang-format
- Bump version

Performance on Intel Skylake Xeon
ARGBRotate90_Opt (795 ms)
I420Rotate90_Opt (283 ms)
I422Rotate90_Opt (867 ms)  <-- scales and rotates
I444Rotate90_Opt (565 ms)
NV12Rotate90_Opt (289 ms)

Performance on Pixel 4 (Cortex A76)
ARGBRotate90_Opt (4208 ms)
I420Rotate90_Opt (273 ms)
I422Rotate90_Opt (1207 ms)
I444Rotate90_Opt (718 ms)
NV12Rotate90_Opt (282 ms)


Bug: libyuv:926
Change-Id: I42e1b93a9595f6ed075918e91bed977dd3d23f6f
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3576778
Reviewed-by: Mirko Bonadei <mbonadei@chromium.org>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>

1 files changed, 9 insertions, 4 deletions

diff --git a/source/row_common.cc b/source/row_common.cc
index 3e5f419d..8cf826ec 100644
--- a/source/row_common.cc
+++ b/source/row_common.cc
@@ -22,10 +22,15 @@ namespace libyuv {
 extern "C" {
 #endif
 
-// This macro control YUV to RGB using unsigned math to extend range of
+// This macro controls YUV to RGB using unsigned math to extend range of
 // YUV to RGB coefficients to 0 to 4 instead of 0 to 2 for more accuracy on B:
 // LIBYUV_UNLIMITED_DATA
 
+// Macros to enable unlimited data for each colorspace
+// LIBYUV_UNLIMITED_BT601
+// LIBYUV_UNLIMITED_BT709
+// LIBYUV_UNLIMITED_BT2020
+
 // The following macro from row_win makes the C code match the row_win code,
 // which is 7 bit fixed point for ARGBToI420:
 #if !defined(LIBYUV_BIT_EXACT) && !defined(LIBYUV_DISABLE_X86) && \
@@ -1463,7 +1468,7 @@ void J400ToARGBRow_C(const uint8_t* src_y, uint8_t* dst_argb, int width) {
 // KR = 0.299; KB = 0.114
 
 // U and V contributions to R,G,B.
-#ifdef LIBYUV_UNLIMITED_DATA
+#if defined(LIBYUV_UNLIMITED_DATA) || defined(LIBYUV_UNLIMITED_BT601)
 #define UB 129 /* round(2.018 * 64) */
 #else
 #define UB 128 /* max(128, round(2.018 * 64)) */
@@ -1517,7 +1522,7 @@ MAKEYUVCONSTANTS(JPEG, YG, YB, UB, UG, VG, VR)
 //  KR = 0.2126, KB = 0.0722
 
 // U and V contributions to R,G,B.
-#ifdef LIBYUV_UNLIMITED_DATA
+#if defined(LIBYUV_UNLIMITED_DATA) || defined(LIBYUV_UNLIMITED_BT709)
 #define UB 135 /* round(2.112 * 64) */
 #else
 #define UB 128 /* max(128, round(2.112 * 64)) */
@@ -1571,7 +1576,7 @@ MAKEYUVCONSTANTS(F709, YG, YB, UB, UG, VG, VR)
 // KR = 0.2627; KB = 0.0593
 
 // U and V contributions to R,G,B.
-#ifdef LIBYUV_UNLIMITED_DATA
+#if defined(LIBYUV_UNLIMITED_DATA) || defined(LIBYUV_UNLIMITED_BT2020)
 #define UB 137 /* round(2.142 * 64) */
 #else
 #define UB 128 /* max(128, round(2.142 * 64)) */