Add ability to extract YUV planes from SkImage
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1513393002
Review URL: https://codereview.chromium.org/1513393002
diff --git a/src/core/SkColorMatrixFilterRowMajor255.cpp b/src/core/SkColorMatrixFilterRowMajor255.cpp
index 6fdfa0b..9106a27 100644
--- a/src/core/SkColorMatrixFilterRowMajor255.cpp
+++ b/src/core/SkColorMatrixFilterRowMajor255.cpp
@@ -32,10 +32,8 @@
}
}
-// src is [20] but some compilers won't accept __restrict__ on anything
-// but an raw pointer or reference
-void SkColorMatrixFilterRowMajor255::initState(const SkScalar* SK_RESTRICT src) {
- transpose_to_pmorder(fTranspose, src);
+void SkColorMatrixFilterRowMajor255::initState() {
+ transpose_to_pmorder(fTranspose, fMatrix);
const float* array = fMatrix;
@@ -55,7 +53,7 @@
SkColorMatrixFilterRowMajor255::SkColorMatrixFilterRowMajor255(const SkScalar array[20]) {
memcpy(fMatrix, array, 20 * sizeof(SkScalar));
- this->initState(array);
+ this->initState();
}
uint32_t SkColorMatrixFilterRowMajor255::getFlags() const {
@@ -420,3 +418,16 @@
SkColorFilter* SkColorFilter::CreateMatrixFilterRowMajor255(const SkScalar array[20]) {
return new SkColorMatrixFilterRowMajor255(array);
}
+
+///////////////////////////////////////////////////////////////////////////////
+
+SkColorFilter* SkColorMatrixFilterRowMajor255::CreateSingleChannelOutput(const SkScalar row[5]) {
+ SkASSERT(row);
+ SkColorMatrixFilterRowMajor255* cf = new SkColorMatrixFilterRowMajor255();
+ static_assert(sizeof(SkScalar) * 5 * 4 == sizeof(cf->fMatrix), "sizes don't match");
+ for (int i = 0; i < 4; ++i) {
+ memcpy(cf->fMatrix + 5 * i, row, sizeof(SkScalar) * 5);
+ }
+ cf->initState();
+ return cf;
+}