mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-13 18:27:35 +00:00
cbb5b58f4d
This ensures they're clamped on Animated -> sRGB conversion, and in the future we'll have to implement different color spaces so we'll need to use it anyways. Differential Revision: https://phabricator.services.mozilla.com/D149792
412 lines
17 KiB
C++
412 lines
17 KiB
C++
/* -*- 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/. */
|
|
|
|
#ifndef GFX_UTILS_H
|
|
#define GFX_UTILS_H
|
|
|
|
#include "gfxMatrix.h"
|
|
#include "gfxRect.h"
|
|
#include "gfxTypes.h"
|
|
#include "ImageTypes.h"
|
|
#include "imgIContainer.h"
|
|
#include "mozilla/gfx/2D.h"
|
|
#include "mozilla/RefPtr.h"
|
|
#include "mozilla/UniquePtr.h"
|
|
#include "nsColor.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsPrintfCString.h"
|
|
#include "nsRegionFwd.h"
|
|
#include "mozilla/gfx/Rect.h"
|
|
#include "mozilla/CheckedInt.h"
|
|
#include "mozilla/webrender/WebRenderTypes.h"
|
|
#include "qcms.h"
|
|
|
|
class gfxASurface;
|
|
class gfxDrawable;
|
|
struct gfxQuad;
|
|
class nsIInputStream;
|
|
class nsIGfxInfo;
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
class Element;
|
|
}
|
|
namespace layers {
|
|
class WebRenderBridgeChild;
|
|
class GlyphArray;
|
|
struct PlanarYCbCrData;
|
|
class WebRenderCommand;
|
|
} // namespace layers
|
|
namespace image {
|
|
class ImageRegion;
|
|
} // namespace image
|
|
namespace wr {
|
|
class DisplayListBuilder;
|
|
} // namespace wr
|
|
} // namespace mozilla
|
|
|
|
enum class ImageType {
|
|
BMP,
|
|
ICO,
|
|
JPEG,
|
|
PNG,
|
|
};
|
|
|
|
class gfxUtils {
|
|
public:
|
|
typedef mozilla::gfx::DataSourceSurface DataSourceSurface;
|
|
typedef mozilla::gfx::DrawTarget DrawTarget;
|
|
typedef mozilla::gfx::IntPoint IntPoint;
|
|
typedef mozilla::gfx::Matrix Matrix;
|
|
typedef mozilla::gfx::Matrix4x4 Matrix4x4;
|
|
typedef mozilla::gfx::SourceSurface SourceSurface;
|
|
typedef mozilla::gfx::SurfaceFormat SurfaceFormat;
|
|
typedef mozilla::image::ImageRegion ImageRegion;
|
|
|
|
/*
|
|
* Premultiply or Unpremultiply aSourceSurface, writing the result
|
|
* to aDestSurface or back into aSourceSurface if aDestSurface is null.
|
|
*
|
|
* If aDestSurface is given, it must have identical format, dimensions, and
|
|
* stride as the source.
|
|
*
|
|
* If the source is not SurfaceFormat::A8R8G8B8_UINT32, no operation is
|
|
* performed. If aDestSurface is given, the data is copied over.
|
|
*/
|
|
static bool PremultiplyDataSurface(DataSourceSurface* srcSurf,
|
|
DataSourceSurface* destSurf);
|
|
static bool UnpremultiplyDataSurface(DataSourceSurface* srcSurf,
|
|
DataSourceSurface* destSurf);
|
|
|
|
static already_AddRefed<DataSourceSurface> CreatePremultipliedDataSurface(
|
|
DataSourceSurface* srcSurf);
|
|
static already_AddRefed<DataSourceSurface> CreateUnpremultipliedDataSurface(
|
|
DataSourceSurface* srcSurf);
|
|
|
|
static void ConvertBGRAtoRGBA(uint8_t* aData, uint32_t aLength);
|
|
|
|
/**
|
|
* Draw something drawable while working around limitations like bad support
|
|
* for EXTEND_PAD, lack of source-clipping, or cairo / pixman bugs with
|
|
* extreme user-space-to-image-space transforms.
|
|
*
|
|
* The input parameters here usually come from the output of our image
|
|
* snapping algorithm in nsLayoutUtils.cpp.
|
|
* This method is split from nsLayoutUtils::DrawPixelSnapped to allow for
|
|
* adjusting the parameters. For example, certain images with transparent
|
|
* margins only have a drawable subimage. For those images, imgFrame::Draw
|
|
* will tweak the rects and transforms that it gets from the pixel snapping
|
|
* algorithm before passing them on to this method.
|
|
*/
|
|
static void DrawPixelSnapped(gfxContext* aContext, gfxDrawable* aDrawable,
|
|
const gfxSize& aImageSize,
|
|
const ImageRegion& aRegion,
|
|
const mozilla::gfx::SurfaceFormat aFormat,
|
|
mozilla::gfx::SamplingFilter aSamplingFilter,
|
|
uint32_t aImageFlags = imgIContainer::FLAG_NONE,
|
|
gfxFloat aOpacity = 1.0,
|
|
bool aUseOptimalFillOp = true);
|
|
|
|
/**
|
|
* Clip aContext to the region aRegion.
|
|
*/
|
|
static void ClipToRegion(gfxContext* aContext, const nsIntRegion& aRegion);
|
|
|
|
/**
|
|
* Clip aTarget to the region aRegion.
|
|
*/
|
|
static void ClipToRegion(mozilla::gfx::DrawTarget* aTarget,
|
|
const nsIntRegion& aRegion);
|
|
|
|
/*
|
|
* Convert image format to depth value
|
|
*/
|
|
static int ImageFormatToDepth(gfxImageFormat aFormat);
|
|
|
|
/**
|
|
* Return the transform matrix that maps aFrom to the rectangle defined by
|
|
* aToTopLeft/aToTopRight/aToBottomRight. aFrom must be
|
|
* nonempty and the destination rectangle must be axis-aligned.
|
|
*/
|
|
static gfxMatrix TransformRectToRect(const gfxRect& aFrom,
|
|
const gfxPoint& aToTopLeft,
|
|
const gfxPoint& aToTopRight,
|
|
const gfxPoint& aToBottomRight);
|
|
|
|
static Matrix TransformRectToRect(const gfxRect& aFrom,
|
|
const IntPoint& aToTopLeft,
|
|
const IntPoint& aToTopRight,
|
|
const IntPoint& aToBottomRight);
|
|
|
|
/**
|
|
* If aIn can be represented exactly using an gfx::IntRect (i.e.
|
|
* integer-aligned edges and coordinates in the int32_t range) then we
|
|
* set aOut to that rectangle, otherwise return failure.
|
|
*/
|
|
static bool GfxRectToIntRect(const gfxRect& aIn, mozilla::gfx::IntRect* aOut);
|
|
|
|
/* Conditions this border to Cairo's max coordinate space.
|
|
* The caller can check IsEmpty() after Condition() -- if it's TRUE,
|
|
* the caller can possibly avoid doing any extra rendering.
|
|
*/
|
|
static void ConditionRect(gfxRect& aRect);
|
|
|
|
/*
|
|
* Transform this rectangle with aMatrix, resulting in a gfxQuad.
|
|
*/
|
|
static gfxQuad TransformToQuad(const gfxRect& aRect,
|
|
const mozilla::gfx::Matrix4x4& aMatrix);
|
|
|
|
/**
|
|
* Return the smallest power of kScaleResolution (2) greater than or equal to
|
|
* aVal. If aRoundDown is specified, the power of 2 will rather be less than
|
|
* or equal to aVal.
|
|
*/
|
|
static float ClampToScaleFactor(float aVal, bool aRoundDown = false);
|
|
|
|
/**
|
|
* We can snap layer transforms for two reasons:
|
|
* 1) To avoid unnecessary resampling when a transform is a translation
|
|
* by a non-integer number of pixels.
|
|
* Snapping the translation to an integer number of pixels avoids
|
|
* blurring the layer and can be faster to composite.
|
|
* 2) When a layer is used to render a rectangular object, we need to
|
|
* emulate the rendering of rectangular inactive content and snap the
|
|
* edges of the rectangle to pixel boundaries. This is both to ensure
|
|
* layer rendering is consistent with inactive content rendering, and to
|
|
* avoid seams.
|
|
* This function implements type 1 snapping. If aTransform is a 2D
|
|
* translation, and this layer's layer manager has enabled snapping
|
|
* (which is the default), return aTransform with the translation snapped
|
|
* to nearest pixels. Otherwise just return aTransform. Call this when the
|
|
* layer does not correspond to a single rectangular content object.
|
|
* This function does not try to snap if aTransform has a scale, because in
|
|
* that case resampling is inevitable and there's no point in trying to
|
|
* avoid it. In fact snapping can cause problems because pixel edges in the
|
|
* layer's content can be rendered unpredictably (jiggling) as the scale
|
|
* interacts with the snapping of the translation, especially with animated
|
|
* transforms.
|
|
* @param aResidualTransform a transform to apply before the result transform
|
|
* in order to get the results to completely match aTransform.
|
|
*/
|
|
static Matrix4x4 SnapTransformTranslation(const Matrix4x4& aTransform,
|
|
Matrix* aResidualTransform);
|
|
static Matrix SnapTransformTranslation(const Matrix& aTransform,
|
|
Matrix* aResidualTransform);
|
|
static Matrix4x4 SnapTransformTranslation3D(const Matrix4x4& aTransform,
|
|
Matrix* aResidualTransform);
|
|
/**
|
|
* See comment for SnapTransformTranslation.
|
|
* This function implements type 2 snapping. If aTransform is a translation
|
|
* and/or scale, transform aSnapRect by aTransform, snap to pixel boundaries,
|
|
* and return the transform that maps aSnapRect to that rect. Otherwise
|
|
* just return aTransform.
|
|
* @param aSnapRect a rectangle whose edges should be snapped to pixel
|
|
* boundaries in the destination surface.
|
|
* @param aResidualTransform a transform to apply before the result transform
|
|
* in order to get the results to completely match aTransform.
|
|
*/
|
|
static Matrix4x4 SnapTransform(const Matrix4x4& aTransform,
|
|
const gfxRect& aSnapRect,
|
|
Matrix* aResidualTransform);
|
|
static Matrix SnapTransform(const Matrix& aTransform,
|
|
const gfxRect& aSnapRect,
|
|
Matrix* aResidualTransform);
|
|
|
|
/**
|
|
* Clears surface to aColor (which defaults to transparent black).
|
|
*/
|
|
static void ClearThebesSurface(gfxASurface* aSurface);
|
|
|
|
static const float* YuvToRgbMatrix4x3RowMajor(
|
|
mozilla::gfx::YUVColorSpace aYUVColorSpace);
|
|
static const float* YuvToRgbMatrix3x3ColumnMajor(
|
|
mozilla::gfx::YUVColorSpace aYUVColorSpace);
|
|
static const float* YuvToRgbMatrix4x4ColumnMajor(
|
|
mozilla::gfx::YUVColorSpace aYUVColorSpace);
|
|
|
|
static mozilla::Maybe<mozilla::gfx::YUVColorSpace> CicpToColorSpace(
|
|
const mozilla::gfx::CICP::MatrixCoefficients,
|
|
const mozilla::gfx::CICP::ColourPrimaries,
|
|
mozilla::LazyLogModule& aLogger);
|
|
|
|
static mozilla::Maybe<mozilla::gfx::TransferFunction> CicpToTransferFunction(
|
|
const mozilla::gfx::CICP::TransferCharacteristics);
|
|
|
|
/**
|
|
* Creates a copy of aSurface, but having the SurfaceFormat aFormat.
|
|
*
|
|
* This function always creates a new surface. Do not call it if aSurface's
|
|
* format is the same as aFormat. Such a non-conversion would just be an
|
|
* unnecessary and wasteful copy (this function asserts to prevent that).
|
|
*
|
|
* This function is intended to be called by code that needs to access the
|
|
* pixel data of the surface, but doesn't want to have lots of branches
|
|
* to handle different pixel data formats (code which would become out of
|
|
* date if and when new formats are added). Callers can use this function
|
|
* to copy the surface to a specified format so that they only have to
|
|
* handle pixel data in that one format.
|
|
*
|
|
* WARNING: There are format conversions that will not be supported by this
|
|
* function. It very much depends on what the Moz2D backends support. If
|
|
* the temporary B8G8R8A8 DrawTarget that this function creates has a
|
|
* backend that supports DrawSurface() calls passing a surface with
|
|
* aSurface's format it will work. Otherwise it will not.
|
|
*
|
|
* *** IMPORTANT PERF NOTE ***
|
|
*
|
|
* This function exists partly because format conversion is fraught with
|
|
* non-obvious performance hazards, so we don't want Moz2D consumers to be
|
|
* doing their own format conversion. Do not try to do so, or at least read
|
|
* the comments in this functions implemtation. That said, the copy that
|
|
* this function carries out has a cost and, although this function tries
|
|
* to avoid perf hazards such as expensive uploads to/readbacks from the
|
|
* GPU, it can't guarantee that it always successfully does so. Perf
|
|
* critical code that can directly handle the common formats that it
|
|
* encounters in a way that is cheaper than a copy-with-format-conversion
|
|
* should consider doing so, and only use this function as a fallback to
|
|
* handle other formats.
|
|
*
|
|
* XXXjwatt it would be nice if SourceSurface::GetDataSurface took a
|
|
* SurfaceFormat argument (with a default argument meaning "use the
|
|
* existing surface's format") and returned a DataSourceSurface in that
|
|
* format. (There would then be an issue of callers maybe failing to
|
|
* realize format conversion may involve expensive copying/uploading/
|
|
* readback.)
|
|
*/
|
|
static already_AddRefed<DataSourceSurface>
|
|
CopySurfaceToDataSourceSurfaceWithFormat(SourceSurface* aSurface,
|
|
SurfaceFormat aFormat);
|
|
|
|
/**
|
|
* Return a color that can be used to identify a frame with a given frame
|
|
* number. The colors will cycle after sNumFrameColors. You can query colors
|
|
* 0 .. sNumFrameColors-1 to get all the colors back.
|
|
*/
|
|
static const mozilla::gfx::DeviceColor& GetColorForFrameNumber(
|
|
uint64_t aFrameNumber);
|
|
static const uint32_t sNumFrameColors;
|
|
|
|
enum BinaryOrData { eBinaryEncode, eDataURIEncode };
|
|
|
|
/**
|
|
* Encodes the given surface to PNG/JPEG/BMP/etc. using imgIEncoder.
|
|
* If both aFile and aString are null, the encoded data is copied to the
|
|
* clipboard.
|
|
*
|
|
* @param aImageType The image type that the surface is to be encoded to.
|
|
* Used to create an appropriate imgIEncoder instance to do the encoding.
|
|
*
|
|
* @param aOutputOptions Passed directly to imgIEncoder::InitFromData as
|
|
* the value of the |outputOptions| parameter. Callers are responsible
|
|
* for making sure that this is a sane value for the passed MIME-type
|
|
* (i.e. for the type of encoder that will be created).
|
|
*
|
|
* @aBinaryOrData Flag used to determine if the surface is simply encoded
|
|
* to the requested binary image format, or if the binary image is
|
|
* further converted to base-64 and written out as a 'data:' URI.
|
|
*
|
|
* @aFile If specified, the encoded data is written out to aFile.
|
|
*
|
|
* @aString If specified, the encoded data is written out to aString.
|
|
*
|
|
* TODO: Copying to the clipboard as a binary file is not currently
|
|
* supported.
|
|
*/
|
|
static nsresult EncodeSourceSurface(SourceSurface* aSurface,
|
|
const ImageType aImageType,
|
|
const nsAString& aOutputOptions,
|
|
BinaryOrData aBinaryOrData, FILE* aFile,
|
|
nsACString* aString = nullptr);
|
|
|
|
/**
|
|
* Write as a PNG file to the path aFile.
|
|
*/
|
|
static void WriteAsPNG(SourceSurface* aSurface, const nsAString& aFile);
|
|
static void WriteAsPNG(SourceSurface* aSurface, const char* aFile);
|
|
static void WriteAsPNG(DrawTarget* aDT, const nsAString& aFile);
|
|
static void WriteAsPNG(DrawTarget* aDT, const char* aFile);
|
|
|
|
/**
|
|
* Dump as a PNG encoded Data URL to a FILE stream (using stdout by
|
|
* default).
|
|
*
|
|
* Rather than giving aFile a default argument we have separate functions
|
|
* to make them easier to use from a debugger.
|
|
*/
|
|
static void DumpAsDataURI(SourceSurface* aSourceSurface, FILE* aFile);
|
|
static inline void DumpAsDataURI(SourceSurface* aSourceSurface) {
|
|
DumpAsDataURI(aSourceSurface, stdout);
|
|
}
|
|
static void DumpAsDataURI(DrawTarget* aDT, FILE* aFile);
|
|
static inline void DumpAsDataURI(DrawTarget* aDT) {
|
|
DumpAsDataURI(aDT, stdout);
|
|
}
|
|
static nsCString GetAsDataURI(SourceSurface* aSourceSurface);
|
|
static nsCString GetAsDataURI(DrawTarget* aDT);
|
|
static nsCString GetAsLZ4Base64Str(DataSourceSurface* aSourceSurface);
|
|
|
|
static mozilla::UniquePtr<uint8_t[]> GetImageBuffer(
|
|
DataSourceSurface* aSurface, bool aIsAlphaPremultiplied,
|
|
int32_t* outFormat);
|
|
|
|
static nsresult GetInputStream(DataSourceSurface* aSurface,
|
|
bool aIsAlphaPremultiplied,
|
|
const char* aMimeType,
|
|
const nsAString& aEncoderOptions,
|
|
nsIInputStream** outStream);
|
|
|
|
static void RemoveShaderCacheFromDiskIfNecessary();
|
|
|
|
/**
|
|
* Copy to the clipboard as a PNG encoded Data URL.
|
|
*/
|
|
static void CopyAsDataURI(SourceSurface* aSourceSurface);
|
|
static void CopyAsDataURI(DrawTarget* aDT);
|
|
|
|
static bool DumpDisplayList();
|
|
|
|
static FILE* sDumpPaintFile;
|
|
};
|
|
|
|
namespace mozilla {
|
|
|
|
struct StyleRGBA;
|
|
struct StyleAnimatedRGBA;
|
|
|
|
namespace gfx {
|
|
|
|
/**
|
|
* If the CMS mode is CMSMode::All, these functions transform the passed
|
|
* color to a device color using the transform returned by
|
|
* gfxPlatform::GetCMSRGBTransform(). If the CMS mode is some other value, the
|
|
* color is returned unchanged (other than a type change to Moz2D Color, if
|
|
* applicable).
|
|
*/
|
|
DeviceColor ToDeviceColor(const sRGBColor&);
|
|
DeviceColor ToDeviceColor(const StyleRGBA&);
|
|
DeviceColor ToDeviceColor(const StyleAnimatedRGBA&);
|
|
DeviceColor ToDeviceColor(nscolor);
|
|
|
|
sRGBColor ToSRGBColor(const StyleAnimatedRGBA&);
|
|
|
|
/**
|
|
* Performs a checked multiply of the given width, height, and bytes-per-pixel
|
|
* values.
|
|
*/
|
|
static inline CheckedInt<uint32_t> SafeBytesForBitmap(uint32_t aWidth,
|
|
uint32_t aHeight,
|
|
unsigned aBytesPerPixel) {
|
|
MOZ_ASSERT(aBytesPerPixel > 0);
|
|
CheckedInt<uint32_t> width = uint32_t(aWidth);
|
|
CheckedInt<uint32_t> height = uint32_t(aHeight);
|
|
return width * height * aBytesPerPixel;
|
|
}
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|
|
|
|
#endif
|