mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 16:46:26 +00:00
6673e03780
cairo_format_t and gfxImageFormat have their equivalent constants in the same order, so you can just cast between them, which is kind of nasty. This patch replaces all such casts with explicit conversions via calls to new conversion functions. These functions will be removed in a subsequent patch. --HG-- extra : rebase_source : ca11568fc06ac48f0e7ca409d4dc01b9192c9e83
374 lines
10 KiB
C++
374 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* 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 "gfx2DGlue.h"
|
|
#include <algorithm>
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::gfx;
|
|
|
|
gfxImageSurface::gfxImageSurface()
|
|
: mSize(0, 0),
|
|
mOwnsData(false),
|
|
mFormat(gfxImageFormat::Unknown),
|
|
mStride(0)
|
|
{
|
|
}
|
|
|
|
void
|
|
gfxImageSurface::InitFromSurface(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 = gfxCairoFormatToImageFormat(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 (!CheckSurfaceSize(aSize))
|
|
MakeInvalid();
|
|
|
|
cairo_format_t cformat = gfxImageFormatToCairoFormat(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 moz_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 (!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 = gfxImageFormatToCairoFormat(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 = gfxCairoFormatToImageFormat(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 == gfxImageFormat::ARGB32)
|
|
stride = aSize.width * 4;
|
|
else if (aFormat == gfxImageFormat::RGB24)
|
|
stride = aSize.width * 4;
|
|
else if (aFormat == gfxImageFormat::RGB16_565)
|
|
stride = aSize.width * 2;
|
|
else if (aFormat == gfxImageFormat::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 == gfxImageFormat::ARGB32 &&
|
|
a2 == gfxImageFormat::RGB24) &&
|
|
!(a1 == gfxImageFormat::RGB24 &&
|
|
a2 == gfxImageFormat::ARGB32)) {
|
|
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;
|
|
}
|
|
|
|
CopyForStride(mData, data->GetData(), size, mStride, data->Stride());
|
|
|
|
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;
|
|
}
|
|
|
|
CopyForStride(data->GetData(), mData, size, data->Stride(), 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 == gfxImageFormat::ARGB32 &&
|
|
GetOpaqueRect().Contains(aRect)) {
|
|
format = gfxImageFormat::RGB24;
|
|
}
|
|
|
|
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();
|
|
}
|