NV21ToRAW and NV12ToRAW functions added

RAW is a big endian style RGB buffer with R first in memory, then G and B.
Convert NV21 and NV12 to RAW format.

Performance on SkylakeX for 720p with AVX2
I420ToRAW_Opt (388 ms)
H420ToRAW_Opt (371 ms)
NV12ToRAW_Opt (341 ms)
NV21ToRAW_Opt (339 ms)

SSSE3
I420ToRAW_Opt (507 ms)
H420ToRAW_Opt (481 ms)
NV12ToRAW_Opt (498 ms)
NV21ToRAW_Opt (493 ms)

C
I420ToRAW_Opt (2287 ms)
H420ToRAW_Opt (2246 ms)
NV12ToRAW_Opt (2191 ms)
NV21ToRAW_Opt (2204 ms)

Performance on Pixel 2 for 720p
out/Release/bin/run_libyuv_unittest -v -t 7200 --gtest_filter=*NV??ToR*Opt --libyuv_repeat=1000 --libyuv_width=1280 --libyuv_height=720
LibYUVConvertTest.NV12ToRGB24_Opt (1739 ms)
LibYUVConvertTest.NV21ToRGB24_Opt (1734 ms)
LibYUVConvertTest.NV12ToRAW_Opt (1719 ms)
LibYUVConvertTest.NV21ToRAW_Opt (1691 ms)
LibYUVConvertTest.NV12ToRGB565_Opt (2152 ms)

Bug: libyuv:778, b:117522975
Test: add new NV21ToRAW and NV12ToRAW tests
Change-Id: Ieabb68a2c6d8c26743e609c5696c81bb14fb253f
Reviewed-on: https://chromium-review.googlesource.com/c/1272615
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Mirko Bonadei <mbonadei@chromium.org>

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 1718
+Version: 1719
 License: BSD
 License File: LICENSE
 

include/libyuv/convert_argb.h

@@ -298,6 +298,28 @@ int NV21ToRGB24(const uint8_t* src_y,
                 int width,
                 int height);
 
+// Convert NV12 to RAW.
+LIBYUV_API
+int NV12ToRAW(const uint8_t* src_y,
+              int src_stride_y,
+              const uint8_t* src_uv,
+              int src_stride_uv,
+              uint8_t* dst_raw,
+              int dst_stride_raw,
+              int width,
+              int height);
+
+// Convert NV21 to RAW.
+LIBYUV_API
+int NV21ToRAW(const uint8_t* src_y,
+              int src_stride_y,
+              const uint8_t* src_vu,
+              int src_stride_vu,
+              uint8_t* dst_raw,
+              int dst_stride_raw,
+              int width,
+              int height);
+
 // Convert M420 to ARGB.
 LIBYUV_API
 int M420ToARGB(const uint8_t* src_m420,

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 1718
+#define LIBYUV_VERSION 1719
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_

source/convert_argb.cc

@@ -1940,7 +1940,6 @@ static int NV21ToRGB24Matrix(const uint8_t* src_y,
   return 0;
 }
 
-// TODO(fbarchard): NV12ToRAW can be implemented by mirrored matrix.
 // Convert NV12 to RGB24.
 LIBYUV_API
 int NV12ToRGB24(const uint8_t* src_y,
@@ -1971,6 +1970,36 @@ int NV21ToRGB24(const uint8_t* src_y,
                            width, height);
 }
 
+// Convert NV12 to RAW.
+LIBYUV_API
+int NV12ToRAW(const uint8_t* src_y,
+              int src_stride_y,
+              const uint8_t* src_uv,
+              int src_stride_uv,
+              uint8_t* dst_raw,
+              int dst_stride_raw,
+              int width,
+              int height) {
+  return NV21ToRGB24Matrix(src_y, src_stride_y, src_uv, src_stride_uv,
+                           dst_raw, dst_stride_raw, &kYvuI601Constants,
+                           width, height);
+}
+
+// Convert NV21 to RAW.
+LIBYUV_API
+int NV21ToRAW(const uint8_t* src_y,
+              int src_stride_y,
+              const uint8_t* src_vu,
+              int src_stride_vu,
+              uint8_t* dst_raw,
+              int dst_stride_raw,
+              int width,
+              int height) {
+  return NV12ToRGB24Matrix(src_y, src_stride_y, src_vu, src_stride_vu,
+                           dst_raw, dst_stride_raw, &kYvuI601Constants,
+                           width, height);
+}
+
 // Convert M420 to ARGB.
 LIBYUV_API
 int M420ToARGB(const uint8_t* src_m420,

unit_test/convert_test.cc

@@ -736,6 +736,8 @@ TESTBIPLANARTOB(NV12, 2, 2, ABGR, 4, 2)
 TESTBIPLANARTOB(NV21, 2, 2, ABGR, 4, 2)
 TESTBIPLANARTOB(NV12, 2, 2, RGB24, 3, 2)
 TESTBIPLANARTOB(NV21, 2, 2, RGB24, 3, 2)
+TESTBIPLANARTOB(NV12, 2, 2, RAW, 3, 2)
+TESTBIPLANARTOB(NV21, 2, 2, RAW, 3, 2)
 TESTBIPLANARTOB(NV12, 2, 2, RGB565, 2, 9)
 
 #ifdef DO_THREE_PLANES