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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /gfx/thebes/gfxImageSurface.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | gfx/thebes/gfxImageSurface.cpp | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/gfx/thebes/gfxImageSurface.cpp b/gfx/thebes/gfxImageSurface.cpp new file mode 100644 index 0000000000..3cd285dac7 --- /dev/null +++ b/gfx/thebes/gfxImageSurface.cpp @@ -0,0 +1,326 @@ +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "mozilla/MemoryReporting.h" +#if defined(HAVE_POSIX_MEMALIGN) +# include "gfxAlphaRecovery.h" +#endif +#include "gfxImageSurface.h" + +#include "cairo.h" +#include "mozilla/gfx/2D.h" +#include "mozilla/gfx/HelpersCairo.h" +#include "gfx2DGlue.h" +#include <algorithm> + +using namespace mozilla; +using namespace mozilla::gfx; + +gfxImageSurface::gfxImageSurface() + : mSize(0, 0), + mOwnsData(false), + mData(nullptr), + mFormat(SurfaceFormat::UNKNOWN), + mStride(0) {} + +void gfxImageSurface::InitFromSurface(cairo_surface_t* csurf) { + if (!csurf || cairo_surface_status(csurf)) { + MakeInvalid(); + return; + } + + mSize.width = cairo_image_surface_get_width(csurf); + mSize.height = cairo_image_surface_get_height(csurf); + mData = cairo_image_surface_get_data(csurf); + mFormat = CairoFormatToGfxFormat(cairo_image_surface_get_format(csurf)); + mOwnsData = false; + mStride = cairo_image_surface_get_stride(csurf); + + Init(csurf, true); +} + +gfxImageSurface::gfxImageSurface(unsigned char* aData, const IntSize& aSize, + long aStride, gfxImageFormat aFormat) { + InitWithData(aData, aSize, aStride, aFormat); +} + +void gfxImageSurface::MakeInvalid() { + mSize = IntSize(-1, -1); + mData = nullptr; + mStride = 0; +} + +void gfxImageSurface::InitWithData(unsigned char* aData, const IntSize& aSize, + long aStride, gfxImageFormat aFormat) { + mSize = aSize; + mOwnsData = false; + mData = aData; + mFormat = aFormat; + mStride = aStride; + + if (!Factory::CheckSurfaceSize(aSize)) MakeInvalid(); + + cairo_format_t cformat = GfxFormatToCairoFormat(mFormat); + cairo_surface_t* surface = cairo_image_surface_create_for_data( + (unsigned char*)mData, cformat, mSize.width, mSize.height, mStride); + + // cairo_image_surface_create_for_data can return a 'null' surface + // in out of memory conditions. The gfxASurface::Init call checks + // the surface it receives to see if there is an error with the + // surface and handles it appropriately. That is why there is + // no check here. + Init(surface); +} + +static void* TryAllocAlignedBytes(size_t aSize) { + // Use fallible allocators here +#if defined(HAVE_POSIX_MEMALIGN) + void* ptr; + // Try to align for fast alpha recovery. This should only help + // cairo too, can't hurt. + return posix_memalign(&ptr, 1 << gfxAlphaRecovery::GoodAlignmentLog2(), aSize) + ? nullptr + : ptr; +#else + // Oh well, hope that luck is with us in the allocator + return malloc(aSize); +#endif +} + +gfxImageSurface::gfxImageSurface(const IntSize& size, gfxImageFormat format, + bool aClear) + : mSize(size), mData(nullptr), mFormat(format) { + AllocateAndInit(0, 0, aClear); +} + +void gfxImageSurface::AllocateAndInit(long aStride, int32_t aMinimalAllocation, + bool aClear) { + // The callers should set mSize and mFormat. + MOZ_ASSERT(!mData); + mData = nullptr; + mOwnsData = false; + + mStride = aStride > 0 ? aStride : ComputeStride(); + if (aMinimalAllocation < mSize.height * mStride) + aMinimalAllocation = mSize.height * mStride; + + if (!Factory::CheckSurfaceSize(mSize)) MakeInvalid(); + + // if we have a zero-sized surface, just leave mData nullptr + if (mSize.height * mStride > 0) { + // This can fail to allocate memory aligned as we requested, + // or it can fail to allocate any memory at all. + mData = (unsigned char*)TryAllocAlignedBytes(aMinimalAllocation); + if (!mData) return; + if (aClear) memset(mData, 0, aMinimalAllocation); + } + + mOwnsData = true; + + cairo_format_t cformat = GfxFormatToCairoFormat(mFormat); + cairo_surface_t* surface = cairo_image_surface_create_for_data( + (unsigned char*)mData, cformat, mSize.width, mSize.height, mStride); + + Init(surface); + + if (mSurfaceValid) { + RecordMemoryUsed(mSize.height * ComputeStride() + sizeof(gfxImageSurface)); + } +} + +gfxImageSurface::gfxImageSurface(const IntSize& size, gfxImageFormat format, + long aStride, int32_t aExtraBytes, bool aClear) + : mSize(size), mData(nullptr), mFormat(format) { + AllocateAndInit(aStride, aExtraBytes, aClear); +} + +gfxImageSurface::gfxImageSurface(cairo_surface_t* csurf) { + mSize.width = cairo_image_surface_get_width(csurf); + mSize.height = cairo_image_surface_get_height(csurf); + mData = cairo_image_surface_get_data(csurf); + mFormat = CairoFormatToGfxFormat(cairo_image_surface_get_format(csurf)); + mOwnsData = false; + mStride = cairo_image_surface_get_stride(csurf); + + Init(csurf, true); +} + +gfxImageSurface::~gfxImageSurface() { + if (mOwnsData) free(mData); +} + +/*static*/ +long gfxImageSurface::ComputeStride(const IntSize& aSize, + gfxImageFormat aFormat) { + long stride; + + if (aFormat == SurfaceFormat::A8R8G8B8_UINT32) + stride = aSize.width * 4; + else if (aFormat == SurfaceFormat::X8R8G8B8_UINT32) + stride = aSize.width * 4; + else if (aFormat == SurfaceFormat::R5G6B5_UINT16) + stride = aSize.width * 2; + else if (aFormat == SurfaceFormat::A8) + stride = aSize.width; + else { + NS_WARNING("Unknown format specified to gfxImageSurface!"); + stride = aSize.width * 4; + } + + stride = ((stride + 3) / 4) * 4; + + return stride; +} + +size_t gfxImageSurface::SizeOfExcludingThis( + mozilla::MallocSizeOf aMallocSizeOf) const { + size_t n = gfxASurface::SizeOfExcludingThis(aMallocSizeOf); + if (mOwnsData) { + n += aMallocSizeOf(mData); + } + return n; +} + +size_t gfxImageSurface::SizeOfIncludingThis( + mozilla::MallocSizeOf aMallocSizeOf) const { + return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf); +} + +bool gfxImageSurface::SizeOfIsMeasured() const { return true; } + +// helper function for the CopyFrom methods +static void CopyForStride(unsigned char* aDest, unsigned char* aSrc, + const IntSize& aSize, long aDestStride, + long aSrcStride) { + if (aDestStride == aSrcStride) { + memcpy(aDest, aSrc, aSrcStride * aSize.height); + } else { + int lineSize = std::min(aDestStride, aSrcStride); + for (int i = 0; i < aSize.height; i++) { + unsigned char* src = aSrc + aSrcStride * i; + unsigned char* dst = aDest + aDestStride * i; + + memcpy(dst, src, lineSize); + } + } +} + +// helper function for the CopyFrom methods +static bool FormatsAreCompatible(gfxImageFormat a1, gfxImageFormat a2) { + if (a1 != a2 && + !(a1 == SurfaceFormat::A8R8G8B8_UINT32 && + a2 == SurfaceFormat::X8R8G8B8_UINT32) && + !(a1 == SurfaceFormat::X8R8G8B8_UINT32 && + a2 == SurfaceFormat::A8R8G8B8_UINT32)) { + return false; + } + + return true; +} + +bool gfxImageSurface::CopyFrom(SourceSurface* aSurface) { + RefPtr<DataSourceSurface> data = aSurface->GetDataSurface(); + + if (!data) { + return false; + } + + IntSize size(data->GetSize().width, data->GetSize().height); + if (size != mSize) { + return false; + } + + if (!FormatsAreCompatible(SurfaceFormatToImageFormat(aSurface->GetFormat()), + mFormat)) { + return false; + } + + DataSourceSurface::ScopedMap map(data, DataSourceSurface::READ); + CopyForStride(mData, map.GetData(), size, mStride, map.GetStride()); + + return true; +} + +bool gfxImageSurface::CopyFrom(gfxImageSurface* other) { + if (other->mSize != mSize) { + return false; + } + + if (!FormatsAreCompatible(other->mFormat, mFormat)) { + return false; + } + + CopyForStride(mData, other->mData, mSize, mStride, other->mStride); + + return true; +} + +bool gfxImageSurface::CopyTo(SourceSurface* aSurface) { + RefPtr<DataSourceSurface> data = aSurface->GetDataSurface(); + + if (!data) { + return false; + } + + IntSize size(data->GetSize().width, data->GetSize().height); + if (size != mSize) { + return false; + } + + if (!FormatsAreCompatible(SurfaceFormatToImageFormat(aSurface->GetFormat()), + mFormat)) { + return false; + } + + DataSourceSurface::ScopedMap map(data, DataSourceSurface::READ_WRITE); + CopyForStride(map.GetData(), mData, size, map.GetStride(), mStride); + + return true; +} + +already_AddRefed<DataSourceSurface> +gfxImageSurface::CopyToB8G8R8A8DataSourceSurface() { + RefPtr<DataSourceSurface> dataSurface = Factory::CreateDataSourceSurface( + IntSize(GetSize().width, GetSize().height), SurfaceFormat::B8G8R8A8); + if (dataSurface) { + CopyTo(dataSurface); + } + return dataSurface.forget(); +} + +already_AddRefed<gfxSubimageSurface> gfxImageSurface::GetSubimage( + const gfxRect& aRect) { + gfxRect r(aRect); + r.Round(); + MOZ_ASSERT(gfxRect(0, 0, mSize.width, mSize.height).Contains(r)); + + gfxImageFormat format = Format(); + + unsigned char* subData = + Data() + (Stride() * (int)r.Y()) + + (int)r.X() * gfxASurface::BytePerPixelFromFormat(Format()); + + if (format == SurfaceFormat::A8R8G8B8_UINT32 && + GetOpaqueRect().Contains(aRect)) { + format = SurfaceFormat::X8R8G8B8_UINT32; + } + + RefPtr<gfxSubimageSurface> image = new gfxSubimageSurface( + this, subData, IntSize((int)r.Width(), (int)r.Height()), format); + + return image.forget(); +} + +gfxSubimageSurface::gfxSubimageSurface(gfxImageSurface* aParent, + unsigned char* aData, + const IntSize& aSize, + gfxImageFormat aFormat) + : gfxImageSurface(aData, aSize, aParent->Stride(), aFormat), + mParent(aParent) {} + +already_AddRefed<gfxImageSurface> gfxImageSurface::GetAsImageSurface() { + RefPtr<gfxImageSurface> surface = this; + return surface.forget(); +} |