bool SkDownSampleImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src,
const SkMatrix& matrix,
SkBitmap* result, SkIPoint*) {
SkScalar scale = fScale;
if (scale > SK_Scalar1 || scale <= 0) {
return false;
}
int dstW = SkScalarRoundToInt(src.width() * scale);
int dstH = SkScalarRoundToInt(src.height() * scale);
if (dstW < 1) {
dstW = 1;
}
if (dstH < 1) {
dstH = 1;
}
SkBitmap tmp;
// downsample
{
SkDevice* dev = proxy->createDevice(dstW, dstH);
if (NULL == dev) {
return false;
}
OwnDeviceCanvas canvas(dev);
SkPaint paint;
paint.setFilterBitmap(true);
canvas.scale(scale, scale);
canvas.drawBitmap(src, 0, 0, &paint);
tmp = dev->accessBitmap(false);
}
// upscale
{
SkDevice* dev = proxy->createDevice(src.width(), src.height());
if (NULL == dev) {
return false;
}
OwnDeviceCanvas canvas(dev);
SkRect r = SkRect::MakeWH(SkIntToScalar(src.width()),
SkIntToScalar(src.height()));
canvas.drawBitmapRect(tmp, NULL, r, NULL);
*result = dev->accessBitmap(false);
}
return true;
}
static void make_bitmap(SkBitmap* bitmap, GrContext* ctx)
{
SkCanvas canvas;
if (ctx)
{
SkDevice* dev = new SkGpuDevice(ctx, SkBitmap::kARGB_8888_Config, 64, 64);
canvas.setDevice(dev)->unref();
*bitmap = dev->accessBitmap(false);
}
else
{
bitmap->setConfig(SkBitmap::kARGB_8888_Config, 64, 64);
bitmap->allocPixels();
canvas.setBitmapDevice(*bitmap);
}
canvas.drawColor(SK_ColorRED);
SkPaint paint;
paint.setAntiAlias(true);
const SkPoint pts[] = { { 0, 0 }, { 64, 64 } };
const SkColor colors[] = { SK_ColorWHITE, SK_ColorBLUE };
paint.setShader(SkGradientShader::CreateLinear(pts, colors, NULL, 2,
SkShader::kClamp_TileMode))->unref();
canvas.drawCircle(32, 32, 32, paint);
}
String ImageBuffer::toDataURL(const String& mimeType, const double* quality) const
{
ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType));
Vector<char> encodedImage, base64Data;
SkDevice* device = context()->platformContext()->canvas()->getDevice();
if (!encodeImage(device->accessBitmap(false), mimeType, quality, &encodedImage))
return "data:,";
base64Encode(encodedImage, base64Data);
return "data:" + mimeType + ";base64," + base64Data;
}
bool SkMergeImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src,
const SkMatrix& ctm,
SkBitmap* result, SkIPoint* loc) {
if (fCount < 1) {
return false;
}
const SkIRect srcBounds = SkIRect::MakeXYWH(loc->x(), loc->y(),
src.width(), src.height());
SkIRect bounds;
if (!this->filterBounds(srcBounds, ctm, &bounds)) {
return false;
}
const int x0 = bounds.left();
const int y0 = bounds.top();
SkDevice* dst = proxy->createDevice(bounds.width(), bounds.height());
if (NULL == dst) {
return false;
}
OwnDeviceCanvas canvas(dst);
SkPaint paint;
for (int i = 0; i < fCount; ++i) {
SkBitmap tmp;
const SkBitmap* srcPtr;
SkIPoint pos = *loc;
SkImageFilter* filter = fFilters[i];
if (filter) {
if (!filter->filterImage(proxy, src, ctm, &tmp, &pos)) {
return false;
}
srcPtr = &tmp;
} else {
srcPtr = &src;
}
if (fModes) {
paint.setXfermodeMode((SkXfermode::Mode)fModes[i]);
} else {
paint.setXfermode(NULL);
}
canvas.drawSprite(*srcPtr, pos.x() - x0, pos.y() - y0, &paint);
}
loc->set(bounds.left(), bounds.top());
*result = dst->accessBitmap(false);
return true;
}
/// M: added for HTML5-benchmark performance @{
PassRefPtr<Image> ImageBuffer::getContextImageRef() const
{
SkCanvas* canvas = imageBufferCanvas(this);
if (!canvas)
return 0;
SkDevice* device = canvas->getDevice();
const SkBitmap& orig = device->accessBitmap(false);
SkBitmapRef* ref = new SkBitmapRef(orig);
RefPtr<Image> image = BitmapImage::create(ref, 0);
ref->unref();
return image;
}
String ImageBuffer::toDataURL(const String& mimeType, const double* quality) const
{
SkDevice* device = context()->platformContext()->canvas()->getDevice();
SkBitmap bitmap = device->accessBitmap(false);
// if we can't see the pixels directly, call readPixels() to get a copy.
// this could happen if the device is backed by a GPU.
bitmap.lockPixels(); // balanced by our destructor, or explicitly if getPixels() fails
if (!bitmap.getPixels()) {
bitmap.unlockPixels();
SkIRect bounds = SkIRect::MakeWH(device->width(), device->height());
if (!device->readPixels(bounds, &bitmap))
return "data:,";
}
return ImageToDataURL(bitmap, mimeType, quality);
}
PassRefPtr<Image> ImageBuffer::copyImage() const
{
ASSERT(context());
SkCanvas* canvas = imageBufferCanvas(this);
if (!canvas)
return 0;
SkDevice* device = canvas->getDevice();
const SkBitmap& orig = device->accessBitmap(false);
SkBitmap copy;
if (PlatformBridge::canSatisfyMemoryAllocation(orig.getSize()))
orig.copyTo(©, orig.config());
SkBitmapRef* ref = new SkBitmapRef(copy);
RefPtr<Image> image = BitmapImage::create(ref, 0);
ref->unref();
return image;
}
static void make_bitmap(SkBitmap* bitmap, GrContext* ctx, SkIRect* center) {
SkDevice* dev;
SkCanvas canvas;
const int kFixed = 28;
const int kStretchy = 8;
const int kSize = 2*kFixed + kStretchy;
#if SK_SUPPORT_GPU
if (ctx) {
dev = new SkGpuDevice(ctx, SkBitmap::kARGB_8888_Config, kSize, kSize);
*bitmap = dev->accessBitmap(false);
} else
#endif
{
bitmap->setConfig(SkBitmap::kARGB_8888_Config, kSize, kSize);
bitmap->allocPixels();
dev = new SkDevice(*bitmap);
}
canvas.setDevice(dev)->unref();
canvas.clear(0);
SkRect r = SkRect::MakeWH(SkIntToScalar(kSize), SkIntToScalar(kSize));
const SkScalar strokeWidth = SkIntToScalar(6);
const SkScalar radius = SkIntToScalar(kFixed) - strokeWidth/2;
center->setXYWH(kFixed, kFixed, kStretchy, kStretchy);
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(0xFFFF0000);
canvas.drawRoundRect(r, radius, radius, paint);
r.setXYWH(SkIntToScalar(kFixed), 0, SkIntToScalar(kStretchy), SkIntToScalar(kSize));
paint.setColor(0x8800FF00);
canvas.drawRect(r, paint);
r.setXYWH(0, SkIntToScalar(kFixed), SkIntToScalar(kSize), SkIntToScalar(kStretchy));
paint.setColor(0x880000FF);
canvas.drawRect(r, paint);
}
SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) {
#ifdef SK_SUPPORT_GL
#ifndef USE_OFFSCREEN
aglSetWindowRef(gAGLContext, NULL);
#endif
#endif
switch (fCanvasType) {
case kRaster_CanvasType:
canvas = this->INHERITED::beforeChildren(canvas);
break;
case kPicture_CanvasType:
fPicture = new SkPicture;
canvas = fPicture->beginRecording(9999, 9999);
break;
#ifdef SK_SUPPORT_GL
case kOpenGL_CanvasType: {
//SkGLCanvas::DeleteAllTextures(); // just for testing
SkDevice* device = canvas->getDevice();
const SkBitmap& bitmap = device->accessBitmap(true);
// first clear the raster bitmap, so we don't see any leftover bits
bitmap.eraseColor(0);
// now setup our glcanvas
setup_offscreen_gl(bitmap, (WindowRef)this->getHWND());
fGLCanvas = new SkGLCanvas;
fGLCanvas->setViewport(bitmap.width(), bitmap.height());
canvas = fGLCanvas;
break;
}
#endif
}
if (fUseClip) {
canvas->drawColor(0xFFFF88FF);
canvas->clipPath(fClipPath);
}
return canvas;
}
PassRefPtr<Image> ImageBuffer::copyImage() const
{
ASSERT(context() && context()->platformContext());
#if ENABLE(ACCELERATED_2D_CANVAS)
context()->syncSoftwareCanvas();
#endif
// Request for canvas bitmap; conversion required.
if (context()->platformContext()->isRecording())
context()->platformContext()->convertToNonRecording();
SkCanvas* canvas = context()->platformContext()->mCanvas;
SkDevice* device = canvas->getDevice();
const SkBitmap& orig = device->accessBitmap(false);
SkBitmap copy;
if (PlatformBridge::canSatisfyMemoryAllocation(orig.getSize()))
orig.copyTo(©, orig.config());
SkBitmapRef* ref = new SkBitmapRef(copy);
RefPtr<Image> image = BitmapImage::create(ref, 0);
ref->unref();
return image;
}
CGContextRef BitLockerSkia::cgContext()
{
SkDevice* device = m_canvas->getDevice();
ASSERT(device);
if (!device)
return 0;
releaseIfNeeded();
const SkBitmap& bitmap = device->accessBitmap(true);
bitmap.lockPixels();
void* pixels = bitmap.getPixels();
m_cgContext = CGBitmapContextCreate(pixels, device->width(),
device->height(), 8, bitmap.rowBytes(), CGColorSpaceCreateDeviceRGB(),
kCGBitmapByteOrder32Host | kCGImageAlphaPremultipliedFirst);
// Apply device matrix.
CGAffineTransform contentsTransform = CGAffineTransformMakeScale(1, -1);
contentsTransform = CGAffineTransformTranslate(contentsTransform, 0, -device->height());
CGContextConcatCTM(m_cgContext, contentsTransform);
// Apply clip in device coordinates.
CGMutablePathRef clipPath = CGPathCreateMutable();
SkRegion::Iterator iter(m_canvas->getTotalClip());
for (; !iter.done(); iter.next()) {
IntRect rect = iter.rect();
CGPathAddRect(clipPath, 0, rect);
}
CGContextAddPath(m_cgContext, clipPath);
CGContextClip(m_cgContext);
CGPathRelease(clipPath);
// Apply content matrix.
const SkMatrix& skMatrix = m_canvas->getTotalMatrix();
CGAffineTransform affine = SkMatrixToCGAffineTransform(skMatrix);
CGContextConcatCTM(m_cgContext, affine);
return m_cgContext;
}
String ImageBuffer::toDataURL(const String& mimeType, const double* quality) const
{
ASSERT(context() && context()->platformContext());
// Request for canvas bitmap; conversion required.
if (context()->platformContext()->isRecording())
context()->platformContext()->convertToNonRecording();
// CAPPFIX_WEB_WEBGL
SkCanvas* canvas = imageBufferCanvas(this);
// CAPPFIX_WEB_WEBGL_END
SkDevice* device = canvas->getDevice();
SkBitmap bitmap = device->accessBitmap(false);
// if we can't see the pixels directly, call readPixels() to get a copy.
// this could happen if the device is backed by a GPU.
bitmap.lockPixels(); // balanced by our destructor, or explicitly if getPixels() fails
if (!bitmap.getPixels()) {
bitmap.unlockPixels();
SkIRect bounds = SkIRect::MakeWH(device->width(), device->height());
if (!canvas->readPixels(bounds, &bitmap))
return "data:,";
}
return ImageToDataURL(bitmap, mimeType, quality);
}
bool SkColorFilterImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src,
const SkMatrix& matrix,
SkBitmap* result,
SkIPoint* loc) {
SkColorFilter* cf = fColorFilter;
if (NULL == cf) {
*result = src;
return true;
}
SkDevice* dev = proxy->createDevice(src.width(), src.height());
if (NULL == dev) {
return false;
}
OwnDeviceCanvas canvas(dev);
SkPaint paint;
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
paint.setColorFilter(fColorFilter);
canvas.drawSprite(src, 0, 0, &paint);
*result = dev->accessBitmap(false);
return true;
}
PassRefPtr<ByteArray> getImageData(const IntRect& rect, SkCanvas& srcCanvas,
const IntSize& size)
{
RefPtr<ByteArray> result = ByteArray::create(rect.width() * rect.height() * 4);
SkDevice* srcDevice = srcCanvas.getDevice();
SkBitmap::Config srcConfig = srcDevice->accessBitmap(false).config();
if (srcConfig == SkBitmap::kNo_Config) {
// This is an empty SkBitmap that could not be configured.
ASSERT(!size.width() || !size.height());
return result.release();
}
unsigned char* data = result->data();
if (rect.x() < 0
|| rect.y() < 0
|| rect.maxX() > size.width()
|| rect.maxY() > size.height())
memset(data, 0, result->length());
int originX = rect.x();
int destX = 0;
if (originX < 0) {
destX = -originX;
originX = 0;
}
int endX = rect.maxX();
if (endX > size.width())
endX = size.width();
int numColumns = endX - originX;
if (numColumns <= 0)
return result.release();
int originY = rect.y();
int destY = 0;
if (originY < 0) {
destY = -originY;
originY = 0;
}
int endY = rect.maxY();
if (endY > size.height())
endY = size.height();
int numRows = endY - originY;
if (numRows <= 0)
return result.release();
ASSERT(srcConfig == SkBitmap::kARGB_8888_Config);
unsigned destBytesPerRow = 4 * rect.width();
SkBitmap srcBitmap;
srcBitmap.setConfig(SkBitmap::kARGB_8888_Config, numColumns, numRows, destBytesPerRow);
srcBitmap.setPixels(data);
//srcDevice.readPixels(SkIRect::MakeXYWH(originX, originY, numColumns, numRows), &srcBitmap, SkCanvas::kNative_Premul_Config8888);
SkCanvas::Config8888 config8888;
if (multiplied == Premultiplied)
config8888 = SkCanvas::kRGBA_Premul_Config8888;
else
config8888 = SkCanvas::kRGBA_Unpremul_Config8888;
srcCanvas.readPixels(&srcBitmap, originX, originY, SkCanvas::kNative_Premul_Config8888);
unsigned char* destRow = data + destY * destBytesPerRow + destX * 4;
// Do conversion of byte order and alpha divide (if necessary)
for (int y = 0; y < numRows; ++y) {
SkPMColor* srcBitmapRow = srcBitmap.getAddr32(0, y);
for (int x = 0; x < numColumns; ++x) {
SkPMColor srcPMColor = srcBitmapRow[x];
unsigned char* destPixel = &destRow[x * 4];
if (multiplied == Unmultiplied) {
unsigned char a = SkGetPackedA32(srcPMColor);
destPixel[0] = a ? SkGetPackedR32(srcPMColor) * 255 / a : 0;
destPixel[1] = a ? SkGetPackedG32(srcPMColor) * 255 / a : 0;
destPixel[2] = a ? SkGetPackedB32(srcPMColor) * 255 / a : 0;
destPixel[3] = a;
} else {
// Input and output are both pre-multiplied, we just need to re-arrange the
// bytes from the bitmap format to RGBA.
destPixel[0] = SkGetPackedR32(srcPMColor);
destPixel[1] = SkGetPackedG32(srcPMColor);
destPixel[2] = SkGetPackedB32(srcPMColor);
destPixel[3] = SkGetPackedA32(srcPMColor);
}
}
destRow += destBytesPerRow;
}
return result.release();
}
static void blowup(SkCanvas* canvas, const SkIRect& src, const SkRect& dst) {
SkDevice* device = canvas->getDevice();
const SkBitmap& bm = device->accessBitmap(false);
canvas->drawBitmapRect(bm, &src, dst, NULL);
}
String ImageBuffer::toDataURL(const String& mimeType, const double* quality) const
{
m_context->platformContext()->makeGrContextCurrent();
SkDevice* device = context()->platformContext()->canvas()->getDevice();
return ImageToDataURL(device->accessBitmap(false), mimeType, quality);
}
