зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1751205 - Part 1. Add Swizzle/PremultiplyYFlipData helper methods. r=gfx-reviewers,lsalzman,jgilbert
These new methods do both swizzle/premultiply and a Y-flip operation. Differential Revision: https://phabricator.services.mozilla.com/D136503
This commit is contained in:
Andrew Osmond
Родитель
b6ae4a0fca
Коммит
47af38389f
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@ -10,6 +10,7 @@
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#include "Tools.h"
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#include "mozilla/CheckedInt.h"
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#include "mozilla/EndianUtils.h"
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#include "mozilla/UniquePtr.h"
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#ifdef USE_SSE2
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# include "mozilla/SSE.h"
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@ -19,6 +20,8 @@
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# include "mozilla/arm.h"
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#endif
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#include <new>
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namespace mozilla {
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namespace gfx {
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@ -1187,6 +1190,92 @@ bool SwizzleData(const uint8_t* aSrc, int32_t aSrcStride,
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return false;
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}
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static bool SwizzleYFlipDataInternal(const uint8_t* aSrc, int32_t aSrcStride,
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SurfaceFormat aSrcFormat, uint8_t* aDst,
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int32_t aDstStride,
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SurfaceFormat aDstFormat,
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const IntSize& aSize,
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SwizzleRowFn aSwizzleFn) {
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if (!aSwizzleFn) {
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return false;
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}
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// Guarantee our width and height are both greater than zero.
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if (aSize.IsEmpty()) {
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return true;
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}
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// Unlike SwizzleData/PremultiplyData, we don't use the stride gaps directly,
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// but we can use it to verify that the stride is valid for our width and
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// format.
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int32_t srcGap = GetStrideGap(aSize.width, aSrcFormat, aSrcStride);
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int32_t dstGap = GetStrideGap(aSize.width, aDstFormat, aDstStride);
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MOZ_ASSERT(srcGap >= 0 && dstGap >= 0);
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if (srcGap < 0 || dstGap < 0) {
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return false;
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}
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// Swapping/swizzling to a new buffer is trivial.
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if (aSrc != aDst) {
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const uint8_t* src = aSrc;
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const uint8_t* srcEnd = aSrc + aSize.height * aSrcStride;
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uint8_t* dst = aDst + (aSize.height - 1) * aDstStride;
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while (src < srcEnd) {
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aSwizzleFn(src, dst, aSize.width);
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src += aSrcStride;
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dst -= aDstStride;
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}
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return true;
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}
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if (aSrcStride != aDstStride) {
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return false;
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}
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// If we are swizzling in place, then we need a temporary row buffer.
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UniquePtr<uint8_t[]> rowBuffer(new (std::nothrow) uint8_t[aDstStride]);
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if (!rowBuffer) {
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return false;
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}
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// Swizzle and swap the top and bottom rows until we meet in the middle.
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int32_t middleRow = aSize.height / 2;
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uint8_t* top = aDst;
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uint8_t* bottom = aDst + (aSize.height - 1) * aDstStride;
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for (int32_t row = 0; row < middleRow; ++row) {
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memcpy(rowBuffer.get(), bottom, aDstStride);
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aSwizzleFn(top, bottom, aSize.width);
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aSwizzleFn(rowBuffer.get(), top, aSize.width);
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top += aDstStride;
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bottom -= aDstStride;
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}
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// If there is an odd numbered row, we haven't swizzled it yet.
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if (aSize.height % 2 == 1) {
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top = aDst + middleRow * aDstStride;
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aSwizzleFn(top, top, aSize.width);
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}
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return true;
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}
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bool SwizzleYFlipData(const uint8_t* aSrc, int32_t aSrcStride,
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SurfaceFormat aSrcFormat, uint8_t* aDst,
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int32_t aDstStride, SurfaceFormat aDstFormat,
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const IntSize& aSize) {
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return SwizzleYFlipDataInternal(aSrc, aSrcStride, aSrcFormat, aDst,
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aDstStride, aDstFormat, aSize,
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SwizzleRow(aSrcFormat, aDstFormat));
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}
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bool PremultiplyYFlipData(const uint8_t* aSrc, int32_t aSrcStride,
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SurfaceFormat aSrcFormat, uint8_t* aDst,
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int32_t aDstStride, SurfaceFormat aDstFormat,
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const IntSize& aSize) {
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return SwizzleYFlipDataInternal(aSrc, aSrcStride, aSrcFormat, aDst,
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aDstStride, aDstFormat, aSize,
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PremultiplyRow(aSrcFormat, aDstFormat));
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}
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SwizzleRowFn SwizzleRow(SurfaceFormat aSrcFormat, SurfaceFormat aDstFormat) {
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#ifdef USE_SSE2
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if (mozilla::supports_avx2()) switch (FORMAT_KEY(aSrcFormat, aDstFormat)) {
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@ -46,6 +46,27 @@ GFX2D_API bool SwizzleData(const uint8_t* aSrc, int32_t aSrcStride,
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int32_t aDstStride, SurfaceFormat aDstFormat,
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const IntSize& aSize);
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/**
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* Flips rows of source and swizzles it to destination. Source and destination
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* may be the same to swizzle in-place; this will fail if it cannot allocate a
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* temporary buffer.
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*/
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GFX2D_API bool SwizzleYFlipData(const uint8_t* aSrc, int32_t aSrcStride,
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SurfaceFormat aSrcFormat, uint8_t* aDst,
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int32_t aDstStride, SurfaceFormat aDstFormat,
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const IntSize& aSize);
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/**
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* Flips rows of source and premultiplies/swizzles it to destination. Source and
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* destination may be the same to premultiply/swizzle in-place; this will fail
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* if it cannot allocate a temporary buffer.
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*/
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GFX2D_API bool PremultiplyYFlipData(const uint8_t* aSrc, int32_t aSrcStride,
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SurfaceFormat aSrcFormat, uint8_t* aDst,
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int32_t aDstStride,
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SurfaceFormat aDstFormat,
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const IntSize& aSize);
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/**
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* Swizzles source and writes it to destination. Source and destination may be
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* the same to swizzle in-place.
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@ -82,6 +82,75 @@ TEST(Moz2D, PremultiplyRow)
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EXPECT_TRUE(ArrayEqual(out, check_argb));
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}
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TEST(Moz2D, PremultiplyYFlipData)
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{
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const uint8_t stride = 2 * 4;
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const uint8_t in_bgra[6 * 4] = {
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255, 255, 0, 255, // row 1: verify 255 alpha leaves RGB unchanged
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0, 0, 255, 255,
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0, 255, 255, 0, // row 2: verify 0 alpha zeroes out RGB
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0, 0, 0, 0,
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255, 0, 0, 128, // row 3: verify that 255 RGB maps to alpha
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255, 255, 255, 128,
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};
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const uint8_t in_bgra_2[4 * 4] = {
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255, 255, 0, 255, // row 1: verify 255 alpha leaves RGB unchanged
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0, 0, 255, 255,
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0, 255, 255, 0, // row 2: verify 0 alpha zeroes out RGB
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0, 0, 0, 0,
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};
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const uint8_t in_bgra_3[2 * 4] = {
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255, 0, 0, 128, // row 1: verify that 255 RGB maps to alpha
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255, 255, 255, 128,
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};
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uint8_t out[6 * 4];
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uint8_t out_2[4 * 4];
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uint8_t out_3[2 * 4];
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const uint8_t check_bgra[6 * 4] = {
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128, 0, 0, 128, 128, 128, 128, 128, 0, 0, 0, 0,
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0, 0, 0, 0, 255, 255, 0, 255, 0, 0, 255, 255,
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};
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const uint8_t check_bgra_2[4 * 4] = {
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0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 0, 255, 0, 0, 255, 255,
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};
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const uint8_t check_bgra_3[2 * 4] = {
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128, 0, 0, 128, 128, 128, 128, 128,
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};
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// check swizzled output
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const uint8_t check_rgba[6 * 4] = {
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0, 0, 128, 128, 128, 128, 128, 128, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 255, 255, 255, 255, 0, 0, 255,
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};
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// Premultiply.
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PremultiplyYFlipData(in_bgra, stride, SurfaceFormat::B8G8R8A8, out, stride,
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SurfaceFormat::B8G8R8A8, IntSize(2, 3));
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EXPECT_TRUE(ArrayEqual(out, check_bgra));
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// Premultiply in-place with middle row.
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memcpy(out, in_bgra, sizeof(out));
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PremultiplyYFlipData(out, stride, SurfaceFormat::B8G8R8A8, out, stride,
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SurfaceFormat::B8G8R8A8, IntSize(2, 3));
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EXPECT_TRUE(ArrayEqual(out, check_bgra));
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// Premultiply in-place without middle row.
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memcpy(out_2, in_bgra_2, sizeof(out_2));
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PremultiplyYFlipData(out_2, stride, SurfaceFormat::B8G8R8A8, out_2, stride,
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SurfaceFormat::B8G8R8A8, IntSize(2, 2));
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EXPECT_TRUE(ArrayEqual(out_2, check_bgra_2));
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// Premultiply in-place only middle row.
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memcpy(out_3, in_bgra_3, sizeof(out_3));
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PremultiplyYFlipData(out_3, stride, SurfaceFormat::B8G8R8A8, out_3, stride,
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SurfaceFormat::B8G8R8A8, IntSize(2, 1));
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EXPECT_TRUE(ArrayEqual(out_3, check_bgra_3));
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// Premultiply and swizzle with middle row.
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PremultiplyYFlipData(in_bgra, stride, SurfaceFormat::B8G8R8A8, out, stride,
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SurfaceFormat::R8G8B8A8, IntSize(2, 3));
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EXPECT_TRUE(ArrayEqual(out, check_rgba));
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}
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TEST(Moz2D, UnpremultiplyData)
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{
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const uint8_t in_bgra[5 * 4] = {
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@ -235,6 +304,62 @@ TEST(Moz2D, SwizzleData)
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EXPECT_TRUE(ArrayEqual(out16, check_16));
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}
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TEST(Moz2D, SwizzleYFlipData)
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{
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const uint8_t stride = 2 * 4;
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const uint8_t in_bgra[6 * 4] = {
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255, 255, 0, 255, // row 1
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0, 0, 255, 255, 0, 255, 255, 0, // row 2
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0, 0, 0, 0, 255, 0, 0, 128, // row 3
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255, 255, 255, 128,
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};
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const uint8_t in_bgra_2[4 * 4] = {
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255, 255, 0, 255, // row 1
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0, 0, 255, 255, 0, 255, 255, 0, // row 2
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0, 0, 0, 0,
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};
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const uint8_t in_bgra_3[2 * 4] = {
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255, 0, 0, 128, // row 1
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255, 255, 255, 128,
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};
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uint8_t out[6 * 4];
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uint8_t out_2[4 * 4];
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uint8_t out_3[2 * 4];
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const uint8_t check_rgba[6 * 4] = {
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0, 0, 255, 128, 255, 255, 255, 128, 255, 255, 0, 0,
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0, 0, 0, 0, 0, 255, 255, 255, 255, 0, 0, 255,
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};
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const uint8_t check_rgba_2[4 * 4] = {
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255, 255, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 0, 0, 255,
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};
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const uint8_t check_rgba_3[2 * 4] = {
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0, 0, 255, 128, 255, 255, 255, 128,
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};
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// Swizzle.
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SwizzleYFlipData(in_bgra, stride, SurfaceFormat::B8G8R8A8, out, stride,
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SurfaceFormat::R8G8B8A8, IntSize(2, 3));
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EXPECT_TRUE(ArrayEqual(out, check_rgba));
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// Swizzle in-place with middle row.
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memcpy(out, in_bgra, sizeof(out));
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SwizzleYFlipData(out, stride, SurfaceFormat::B8G8R8A8, out, stride,
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SurfaceFormat::R8G8B8A8, IntSize(2, 3));
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EXPECT_TRUE(ArrayEqual(out, check_rgba));
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// Swizzle in-place without middle row.
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memcpy(out_2, in_bgra_2, sizeof(out_2));
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SwizzleYFlipData(out_2, stride, SurfaceFormat::B8G8R8A8, out_2, stride,
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SurfaceFormat::R8G8B8A8, IntSize(2, 2));
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EXPECT_TRUE(ArrayEqual(out_2, check_rgba_2));
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// Swizzle in-place only middle row.
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memcpy(out_3, in_bgra_3, sizeof(out_3));
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SwizzleYFlipData(out_3, stride, SurfaceFormat::B8G8R8A8, out_3, stride,
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SurfaceFormat::R8G8B8A8, IntSize(2, 1));
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EXPECT_TRUE(ArrayEqual(out_3, check_rgba_3));
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}
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TEST(Moz2D, SwizzleRow)
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{
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const uint8_t in_bgra[5 * 4] = {
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