make info real in SkPixelRef, and add bitmap::asImageInfo
BUG=
R=scroggo@google.com
Review URL: https://codereview.chromium.org/108663004
git-svn-id: http://skia.googlecode.com/svn/trunk@12586 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/core/SkImageInfo.h b/include/core/SkImageInfo.h
index c22249b..1165479 100644
--- a/include/core/SkImageInfo.h
+++ b/include/core/SkImageInfo.h
@@ -10,6 +10,9 @@
#include "SkTypes.h"
+class SkFlattenableWriteBuffer;
+class SkFlattenableReadBuffer;
+
/**
* Describes how to interpret the alpha compoent of a pixel.
*/
@@ -63,11 +66,12 @@
enum SkColorType {
kAlpha_8_SkColorType,
kRGB_565_SkColorType,
+ kARGB_4444_SkColorType,
kRGBA_8888_SkColorType,
kBGRA_8888_SkColorType,
- kIndex8_SkColorType,
+ kIndex_8_SkColorType,
- kLastEnum_SkColorType = kIndex8_SkColorType,
+ kLastEnum_SkColorType = kIndex_8_SkColorType,
#if SK_PMCOLOR_BYTE_ORDER(B,G,R,A)
kPMColor_SkColorType = kBGRA_8888_SkColorType
@@ -82,6 +86,7 @@
static const uint8_t gSize[] = {
1, // Alpha_8
2, // RGB_565
+ 2, // ARGB_4444
4, // RGBA_8888
4, // BGRA_8888
1, // kIndex_8
@@ -112,12 +117,26 @@
return SkColorTypeBytesPerPixel(fColorType);
}
+ size_t minRowBytes() const {
+ return fWidth * this->bytesPerPixel();
+ }
+
bool operator==(const SkImageInfo& other) const {
return 0 == memcmp(this, &other, sizeof(other));
}
bool operator!=(const SkImageInfo& other) const {
return 0 != memcmp(this, &other, sizeof(other));
}
+
+ void unflatten(SkFlattenableReadBuffer&);
+ void flatten(SkFlattenableWriteBuffer&) const;
+
+ size_t getSafeSize(size_t rowBytes) const {
+ if (0 == fHeight) {
+ return 0;
+ }
+ return (fHeight - 1) * rowBytes + fWidth * this->bytesPerPixel();
+ }
};
#endif