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Enable unlimited data for YUV to RGB

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- Provide LIBYUV_LIMITED_DATA macro for backwards compatiblity

Bug: b/474156256
Change-Id: I5d5d7fb640d51ae3c5ad363f2a28c8bfbd3048a5
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3912081
Reviewed-by: Wan-Teh Chang <wtc@google.com>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
This commit is contained in:
Frank Barchard 2022-09-22 07:56:10 -07:00 committed by libyuv LUCI CQ
parent 344bd4dd68
commit b9adaef113
5 changed files with 17 additions and 21 deletions
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2
README.chromium
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@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 1844
Version: 1845
License: BSD
License File: LICENSE

2
include/libyuv/version.h
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@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 1844
#define LIBYUV_VERSION 1845
#endif // INCLUDE_LIBYUV_VERSION_H_

16
source/row_common.cc
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@ -22,13 +22,9 @@ extern "C" {
#endif
// 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
// YUV to RGB coefficients to 0 to 4 instead of 0 to 2 for more accuracy on B.
// Enable this macro for backwards compatiability with limited range 0 to 2.
// LIBYUV_LIMITED_DATA
// The following macro from row_win makes the C code match the row_win code,
// which is 7 bit fixed point for ARGBToI420:
@ -1484,7 +1480,7 @@ 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.
#if defined(LIBYUV_UNLIMITED_DATA) || defined(LIBYUV_UNLIMITED_BT601)
#if !defined(LIBYUV_LIMITED_DATA)
#define UB 129 /* round(2.018 * 64) */
#else
#define UB 128 /* max(128, round(2.018 * 64)) */
@ -1538,7 +1534,7 @@ MAKEYUVCONSTANTS(JPEG, YG, YB, UB, UG, VG, VR)
// KR = 0.2126, KB = 0.0722
// U and V contributions to R,G,B.
#if defined(LIBYUV_UNLIMITED_DATA) || defined(LIBYUV_UNLIMITED_BT709)
#if !defined(LIBYUV_LIMITED_DATA)
#define UB 135 /* round(2.112 * 64) */
#else
#define UB 128 /* max(128, round(2.112 * 64)) */
@ -1592,7 +1588,7 @@ MAKEYUVCONSTANTS(F709, YG, YB, UB, UG, VG, VR)
// KR = 0.2627; KB = 0.0593
// U and V contributions to R,G,B.
#if defined(LIBYUV_UNLIMITED_DATA) || defined(LIBYUV_UNLIMITED_BT2020)
#if !defined(LIBYUV_LIMITED_DATA)
#define UB 137 /* round(2.142 * 64) */
#else
#define UB 128 /* max(128, round(2.142 * 64)) */

12
unit_test/color_test.cc
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@ -32,10 +32,10 @@ namespace libyuv {
#endif
#define ERROR_R 1
#define ERROR_G 1
#ifdef LIBYUV_UNLIMITED_DATA
#define ERROR_B 1
#else
#if defined(LIBYUV_LIMITED_DATA)
#define ERROR_B 18
#else
#define ERROR_B 1
#endif
#define TESTCS(TESTNAME, YUVTOARGB, ARGBTOYUV, HS1, HS, HN, DIFF) \
@ -502,10 +502,10 @@ TEST_F(LibYUVColorTest, TestYUV) {
YUVToRGB(240, 0, 0, &r1, &g1, &b1);
EXPECT_EQ(57, r1);
EXPECT_EQ(255, g1);
#ifdef LIBYUV_UNLIMITED_DATA
EXPECT_EQ(3, b1);
#else
#if defined(LIBYUV_LIMITED_DATA)
EXPECT_EQ(5, b1);
#else
EXPECT_EQ(3, b1);
#endif
for (int i = 0; i < 256; ++i) {

6
unit_test/convert_test.cc
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@ -2620,10 +2620,10 @@ TEST_F(LibYUVConvertTest, TestMJPGToARGB) {
// Test result matches known hash value.
uint32_t dst_argb_hash = HashDjb2(dst_argb, width * height, 5381);
#ifdef LIBYUV_UNLIMITED_DATA
EXPECT_EQ(dst_argb_hash, 3900633302u);
#else
#if defined(LIBYUV_LIMITED_DATA)
EXPECT_EQ(dst_argb_hash, 2355976473u);
#else
EXPECT_EQ(dst_argb_hash, 3900633302u);
#endif
free_aligned_buffer_page_end(dst_argb);