void copy_to_g8(SkBitmap* dst, const SkBitmap& src) {
SkASSERT(kBGRA_8888_SkColorType == src.colorType() ||
kRGBA_8888_SkColorType == src.colorType());
SkImageInfo grayInfo = src.info().makeColorType(kGray_8_SkColorType);
dst->allocPixels(grayInfo);
uint8_t* dst8 = (uint8_t*)dst->getPixels();
const uint32_t* src32 = (const uint32_t*)src.getPixels();
const int w = src.width();
const int h = src.height();
const bool isBGRA = (kBGRA_8888_SkColorType == src.colorType());
for (int y = 0; y < h; ++y) {
if (isBGRA) {
// BGRA
for (int x = 0; x < w; ++x) {
uint32_t s = src32[x];
dst8[x] = SkComputeLuminance((s >> 16) & 0xFF, (s >> 8) & 0xFF, s & 0xFF);
}
} else {
// RGBA
for (int x = 0; x < w; ++x) {
uint32_t s = src32[x];
dst8[x] = SkComputeLuminance(s & 0xFF, (s >> 8) & 0xFF, (s >> 16) & 0xFF);
}
}
src32 = (const uint32_t*)((const char*)src32 + src.rowBytes());
dst8 += dst->rowBytes();
}
// A contructor-type function that returns NULL on failure. This
// prevents the returned SkImageGenerator from ever being in a bad
// state. Called by both Create() functions
SkImageGenerator* CreateDecodingImageGenerator(
SkData* data,
SkStreamRewindable* stream,
const SkDecodingImageGenerator::Options& opts) {
SkASSERT(stream);
SkAutoTUnref<SkStreamRewindable> autoStream(stream); // always unref this.
if (opts.fUseRequestedColorType &&
(kIndex_8_SkColorType == opts.fRequestedColorType)) {
// We do not support indexed color with SkImageGenerators,
return NULL;
}
SkAssertResult(autoStream->rewind());
SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(autoStream));
if (NULL == decoder.get()) {
return NULL;
}
SkBitmap bitmap;
decoder->setSampleSize(opts.fSampleSize);
decoder->setRequireUnpremultipliedColors(opts.fRequireUnpremul);
if (!decoder->decode(stream, &bitmap,
SkImageDecoder::kDecodeBounds_Mode)) {
return NULL;
}
if (bitmap.config() == SkBitmap::kNo_Config) {
return NULL;
}
SkImageInfo info = bitmap.info();
if (!opts.fUseRequestedColorType) {
// Use default
if (kIndex_8_SkColorType == bitmap.colorType()) {
// We don't support kIndex8 because we don't support
// colortables in this workflow.
info.fColorType = kN32_SkColorType;
}
} else {
if (!bitmap.canCopyTo(opts.fRequestedColorType)) {
SkASSERT(bitmap.colorType() != opts.fRequestedColorType);
return NULL; // Can not translate to needed config.
}
info.fColorType = opts.fRequestedColorType;
}
if (opts.fRequireUnpremul && info.fAlphaType != kOpaque_SkAlphaType) {
info.fAlphaType = kUnpremul_SkAlphaType;
}
return SkNEW_ARGS(DecodingImageGenerator,
(data, autoStream.detach(), info,
opts.fSampleSize, opts.fDitherImage));
}
void force_all_opaque(const SkBitmap& bitmap) {
SkASSERT(NULL == bitmap.getTexture());
SkASSERT(kN32_SkColorType == bitmap.colorType());
if (bitmap.getTexture() || kN32_SkColorType == bitmap.colorType()) {
return;
}
SkAutoLockPixels lock(bitmap);
for (int y = 0; y < bitmap.height(); y++) {
for (int x = 0; x < bitmap.width(); x++) {
*bitmap.getAddr32(x, y) |= (SK_A32_MASK << SK_A32_SHIFT);
}
}
}
static void emit_image_xobject(SkWStream* stream,
const SkImage* image,
bool alpha,
const sk_sp<SkPDFObject>& smask,
const SkPDFObjNumMap& objNumMap,
const SkPDFSubstituteMap& substitutes) {
SkBitmap bitmap;
image_get_ro_pixels(image, &bitmap); // TODO(halcanary): test
SkAutoLockPixels autoLockPixels(bitmap); // with malformed images.
// Write to a temporary buffer to get the compressed length.
SkDynamicMemoryWStream buffer;
SkDeflateWStream deflateWStream(&buffer);
if (alpha) {
bitmap_alpha_to_a8(bitmap, &deflateWStream);
} else {
bitmap_to_pdf_pixels(bitmap, &deflateWStream);
}
deflateWStream.finalize(); // call before detachAsStream().
std::unique_ptr<SkStreamAsset> asset(buffer.detachAsStream());
SkPDFDict pdfDict("XObject");
pdfDict.insertName("Subtype", "Image");
pdfDict.insertInt("Width", bitmap.width());
pdfDict.insertInt("Height", bitmap.height());
if (alpha) {
pdfDict.insertName("ColorSpace", "DeviceGray");
} else if (bitmap.colorType() == kIndex_8_SkColorType) {
SkASSERT(1 == pdf_color_component_count(bitmap.colorType()));
pdfDict.insertObject("ColorSpace",
make_indexed_color_space(bitmap.getColorTable(),
bitmap.alphaType()));
} else if (1 == pdf_color_component_count(bitmap.colorType())) {
pdfDict.insertName("ColorSpace", "DeviceGray");
} else {
pdfDict.insertName("ColorSpace", "DeviceRGB");
}
if (smask) {
pdfDict.insertObjRef("SMask", smask);
}
pdfDict.insertInt("BitsPerComponent", 8);
pdfDict.insertName("Filter", "FlateDecode");
pdfDict.insertInt("Length", asset->getLength());
pdfDict.emitObject(stream, objNumMap, substitutes);
pdf_stream_begin(stream);
stream->writeStream(asset.get(), asset->getLength());
pdf_stream_end(stream);
}
bool SkBitmapDevice::onReadPixels(const SkBitmap& bitmap,
int x, int y,
SkCanvas::Config8888 config8888) {
SkASSERT(SkBitmap::kARGB_8888_Config == bitmap.config());
SkASSERT(!bitmap.isNull());
SkASSERT(SkIRect::MakeWH(this->width(), this->height()).contains(SkIRect::MakeXYWH(x, y,
bitmap.width(),
bitmap.height())));
SkIRect srcRect = SkIRect::MakeXYWH(x, y, bitmap.width(), bitmap.height());
const SkBitmap& src = this->accessBitmap(false);
SkBitmap subset;
if (!src.extractSubset(&subset, srcRect)) {
return false;
}
if (kPMColor_SkColorType != subset.colorType()) {
// It'd be preferable to do this directly to bitmap.
subset.copyTo(&subset, kPMColor_SkColorType);
}
SkAutoLockPixels alp(bitmap);
uint32_t* bmpPixels = reinterpret_cast<uint32_t*>(bitmap.getPixels());
SkCopyBitmapToConfig8888(bmpPixels, bitmap.rowBytes(), config8888, subset);
return true;
}
// returns true and set color if the bitmap can be drawn as a single color
// (for efficiency)
static bool can_use_color_shader(const SkBitmap& bm, SkColor* color) {
#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
// HWUI does not support color shaders (see b/22390304)
return false;
#endif
if (1 != bm.width() || 1 != bm.height()) {
return false;
}
SkAutoLockPixels alp(bm);
if (!bm.readyToDraw()) {
return false;
}
switch (bm.colorType()) {
case kN32_SkColorType:
*color = SkUnPreMultiply::PMColorToColor(*bm.getAddr32(0, 0));
return true;
case kRGB_565_SkColorType:
*color = SkPixel16ToColor(*bm.getAddr16(0, 0));
return true;
case kIndex_8_SkColorType:
*color = SkUnPreMultiply::PMColorToColor(bm.getIndex8Color(0, 0));
return true;
default: // just skip the other configs for now
break;
}
return false;
}
/* It is necessary to average the color component of transparent
pixels with their surrounding neighbors since the PDF renderer may
separately re-sample the alpha and color channels when the image is
not displayed at its native resolution. Since an alpha of zero
gives no information about the color component, the pathological
case is a white image with sharp transparency bounds - the color
channel goes to black, and the should-be-transparent pixels are
rendered as grey because of the separate soft mask and color
resizing. e.g.: gm/bitmappremul.cpp */
static void get_neighbor_avg_color(const SkBitmap& bm,
int xOrig,
int yOrig,
uint8_t rgb[3]) {
SkASSERT(kN32_SkColorType == bm.colorType());
unsigned a = 0, r = 0, g = 0, b = 0;
// Clamp the range to the edge of the bitmap.
int ymin = SkTMax(0, yOrig - 1);
int ymax = SkTMin(yOrig + 1, bm.height() - 1);
int xmin = SkTMax(0, xOrig - 1);
int xmax = SkTMin(xOrig + 1, bm.width() - 1);
for (int y = ymin; y <= ymax; ++y) {
SkPMColor* scanline = bm.getAddr32(0, y);
for (int x = xmin; x <= xmax; ++x) {
SkPMColor pmColor = scanline[x];
a += SkGetPackedA32(pmColor);
r += SkGetPackedR32(pmColor);
g += SkGetPackedG32(pmColor);
b += SkGetPackedB32(pmColor);
}
}
if (a > 0) {
rgb[0] = SkToU8(255 * r / a);
rgb[1] = SkToU8(255 * g / a);
rgb[2] = SkToU8(255 * b / a);
} else {
rgb[0] = rgb[1] = rgb[2] = 0;
}
}
DEF_TEST(DiscardablePixelRef_SecondLockColorTableCheck, r) {
SkString resourceDir = GetResourcePath();
SkString path = SkOSPath::Join(resourceDir.c_str(), "randPixels.gif");
if (!sk_exists(path.c_str())) {
return;
}
SkAutoDataUnref encoded(SkData::NewFromFileName(path.c_str()));
SkBitmap bitmap;
if (!SkInstallDiscardablePixelRef(
SkDecodingImageGenerator::Create(
encoded, SkDecodingImageGenerator::Options()), &bitmap)) {
#ifndef SK_BUILD_FOR_WIN
ERRORF(r, "SkInstallDiscardablePixelRef [randPixels.gif] failed.");
#endif
return;
}
if (kIndex_8_SkColorType != bitmap.colorType()) {
return;
}
{
SkAutoLockPixels alp(bitmap);
REPORTER_ASSERT(r, bitmap.getColorTable() && "first pass");
}
{
SkAutoLockPixels alp(bitmap);
REPORTER_ASSERT(r, bitmap.getColorTable() && "second pass");
}
}
// returns true and set color if the bitmap can be drawn as a single color
// (for efficiency)
static bool canUseColorShader(const SkBitmap& bm, SkColor* color) {
if (1 != bm.width() || 1 != bm.height()) {
return false;
}
SkAutoLockPixels alp(bm);
if (!bm.readyToDraw()) {
return false;
}
switch (bm.colorType()) {
case kN32_SkColorType:
*color = SkUnPreMultiply::PMColorToColor(*bm.getAddr32(0, 0));
return true;
case kRGB_565_SkColorType:
*color = SkPixel16ToColor(*bm.getAddr16(0, 0));
return true;
case kIndex_8_SkColorType:
*color = SkUnPreMultiply::PMColorToColor(bm.getIndex8Color(0, 0));
return true;
default: // just skip the other configs for now
break;
}
return false;
}
static SkBitmap deepSkBitmapCopy(const SkBitmap& bitmap)
{
SkBitmap tmp;
if (!bitmap.deepCopyTo(&tmp))
bitmap.copyTo(&tmp, bitmap.colorType());
return tmp;
}
void draw(SkCanvas* canvas) {
const char* colors[] = {"Unknown", "Alpha_8", "RGB_565", "ARGB_4444", "RGBA_8888", "RGB_888x",
"BGRA_8888", "RGBA_1010102", "RGB_101010x", "Gray_8", "RGBA_F16Norm",
"RGBA_F16"};
SkBitmap bitmap;
bitmap.setInfo(SkImageInfo::MakeA8(16, 32));
SkDebugf("color type: k" "%s" "_SkColorType\n", colors[bitmap.colorType()]);
}
/*
* High quality is implemented by performing up-right scale-only filtering and then
* using bilerp for any remaining transformations.
*/
bool SkDefaultBitmapControllerState::processHQRequest(const SkBitmap& origBitmap) {
if (fQuality != kHigh_SkFilterQuality) {
return false;
}
// Our default return state is to downgrade the request to Medium, w/ or w/o setting fBitmap
// to a valid bitmap. If we succeed, we will set this to Low instead.
fQuality = kMedium_SkFilterQuality;
if (kN32_SkColorType != origBitmap.colorType() || !cache_size_okay(origBitmap, fInvMatrix) ||
fInvMatrix.hasPerspective())
{
return false; // can't handle the reqeust
}
SkScalar invScaleX = fInvMatrix.getScaleX();
SkScalar invScaleY = fInvMatrix.getScaleY();
if (fInvMatrix.getType() & SkMatrix::kAffine_Mask) {
SkSize scale;
if (!fInvMatrix.decomposeScale(&scale)) {
return false;
}
invScaleX = scale.width();
invScaleY = scale.height();
}
if (SkScalarNearlyEqual(invScaleX, 1) && SkScalarNearlyEqual(invScaleY, 1)) {
return false; // no need for HQ
}
SkScalar trueDestWidth = origBitmap.width() / invScaleX;
SkScalar trueDestHeight = origBitmap.height() / invScaleY;
SkScalar roundedDestWidth = SkScalarRoundToScalar(trueDestWidth);
SkScalar roundedDestHeight = SkScalarRoundToScalar(trueDestHeight);
if (!SkBitmapCache::Find(origBitmap, roundedDestWidth, roundedDestHeight, &fResultBitmap)) {
SkAutoPixmapUnlock src;
if (!origBitmap.requestLock(&src)) {
return false;
}
if (!SkBitmapScaler::Resize(&fResultBitmap, src.pixmap(), SkBitmapScaler::RESIZE_BEST,
roundedDestWidth, roundedDestHeight,
SkResourceCache::GetAllocator())) {
return false; // we failed to create fScaledBitmap
}
SkASSERT(fResultBitmap.getPixels());
fResultBitmap.setImmutable();
SkBitmapCache::Add(origBitmap, roundedDestWidth, roundedDestHeight, fResultBitmap);
}
SkASSERT(fResultBitmap.getPixels());
fInvMatrix.postScale(roundedDestWidth / origBitmap.width(),
roundedDestHeight / origBitmap.height());
fQuality = kLow_SkFilterQuality;
return true;
}
bool JPEGImageEncoder::encode(const SkBitmap& bitmap, int quality, Vector<unsigned char>* output)
{
SkAutoLockPixels bitmapLock(bitmap);
if (bitmap.colorType() != kPMColor_SkColorType || !bitmap.getPixels())
return false; // Only support 32 bit/pixel skia bitmaps.
return encodePixels(IntSize(bitmap.width(), bitmap.height()), static_cast<unsigned char *>(bitmap.getPixels()), true, quality, output);
}
/**
* First, make sure that writing an 8-bit RGBA KTX file and then
* reading it produces the same bitmap.
*/
DEF_TEST(KtxReadWrite, reporter) {
// Random number generator with explicit seed for reproducibility
SkRandom rand(0x1005cbad);
SkBitmap bm8888;
bool pixelsAllocated = bm8888.allocN32Pixels(128, 128);
REPORTER_ASSERT(reporter, pixelsAllocated);
uint8_t *pixels = reinterpret_cast<uint8_t*>(bm8888.getPixels());
REPORTER_ASSERT(reporter, NULL != pixels);
if (NULL == pixels) {
return;
}
uint8_t *row = pixels;
for (int y = 0; y < bm8888.height(); ++y) {
for (int x = 0; x < bm8888.width(); ++x) {
uint8_t a = rand.nextRangeU(0, 255);
uint8_t r = rand.nextRangeU(0, 255);
uint8_t g = rand.nextRangeU(0, 255);
uint8_t b = rand.nextRangeU(0, 255);
SkPMColor &pixel = *(reinterpret_cast<SkPMColor*>(row + x*sizeof(SkPMColor)));
pixel = SkPreMultiplyARGB(a, r, g, b);
}
row += bm8888.rowBytes();
}
REPORTER_ASSERT(reporter, !(bm8888.empty()));
SkAutoDataUnref encodedData(SkImageEncoder::EncodeData(bm8888, SkImageEncoder::kKTX_Type, 0));
REPORTER_ASSERT(reporter, NULL != encodedData);
SkAutoTUnref<SkMemoryStream> stream(SkNEW_ARGS(SkMemoryStream, (encodedData)));
REPORTER_ASSERT(reporter, NULL != stream);
SkBitmap decodedBitmap;
bool imageDecodeSuccess = SkImageDecoder::DecodeStream(stream, &decodedBitmap);
REPORTER_ASSERT(reporter, imageDecodeSuccess);
REPORTER_ASSERT(reporter, decodedBitmap.colorType() == bm8888.colorType());
REPORTER_ASSERT(reporter, decodedBitmap.alphaType() == bm8888.alphaType());
REPORTER_ASSERT(reporter, decodedBitmap.width() == bm8888.width());
REPORTER_ASSERT(reporter, decodedBitmap.height() == bm8888.height());
REPORTER_ASSERT(reporter, !(decodedBitmap.empty()));
uint8_t *decodedPixels = reinterpret_cast<uint8_t*>(decodedBitmap.getPixels());
REPORTER_ASSERT(reporter, NULL != decodedPixels);
REPORTER_ASSERT(reporter, decodedBitmap.getSize() == bm8888.getSize());
if (NULL == decodedPixels) {
return;
}
REPORTER_ASSERT(reporter, memcmp(decodedPixels, pixels, decodedBitmap.getSize()) == 0);
}
static void draw(SkCanvas* canvas,
const SkPaint& p,
const SkBitmap& src,
SkColorType colorType,
const char text[]) {
SkASSERT(src.colorType() == colorType);
canvas->drawBitmap(src, 0.0f, 0.0f);
canvas->drawText(text, strlen(text), 0.0f, 12.0f, p);
}
bool SkMatrixConvolutionImageFilter::onFilterImage(Proxy* proxy,
const SkBitmap& source,
const Context& ctx,
SkBitmap* result,
SkIPoint* offset) const {
SkBitmap src = source;
SkIPoint srcOffset = SkIPoint::Make(0, 0);
if (!this->filterInput(0, proxy, source, ctx, &src, &srcOffset)) {
return false;
}
if (src.colorType() != kN32_SkColorType) {
return false;
}
SkIRect bounds;
if (!this->applyCropRect(ctx, proxy, src, &srcOffset, &bounds, &src)) {
return false;
}
if (!fConvolveAlpha && !src.isOpaque()) {
src = unpremultiplyBitmap(proxy, src);
}
SkAutoLockPixels alp(src);
if (!src.getPixels()) {
return false;
}
SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
if (!device) {
return false;
}
*result = device->accessBitmap(false);
SkAutoLockPixels alp_result(*result);
offset->fX = bounds.fLeft;
offset->fY = bounds.fTop;
bounds.offset(-srcOffset);
SkIRect interior = SkIRect::MakeXYWH(bounds.left() + fKernelOffset.fX,
bounds.top() + fKernelOffset.fY,
bounds.width() - fKernelSize.fWidth + 1,
bounds.height() - fKernelSize.fHeight + 1);
SkIRect top = SkIRect::MakeLTRB(bounds.left(), bounds.top(), bounds.right(), interior.top());
SkIRect bottom = SkIRect::MakeLTRB(bounds.left(), interior.bottom(),
bounds.right(), bounds.bottom());
SkIRect left = SkIRect::MakeLTRB(bounds.left(), interior.top(),
interior.left(), interior.bottom());
SkIRect right = SkIRect::MakeLTRB(interior.right(), interior.top(),
bounds.right(), interior.bottom());
filterBorderPixels(src, result, top, bounds);
filterBorderPixels(src, result, left, bounds);
filterInteriorPixels(src, result, interior, bounds);
filterBorderPixels(src, result, right, bounds);
filterBorderPixels(src, result, bottom, bounds);
return true;
}
static bool SK_WARN_UNUSED_RESULT flatten(const SkBitmap& bitmap, Json::Value* target,
bool sendBinaries) {
bitmap.lockPixels();
SkAutoTUnref<SkImage> image(SkImage::NewFromBitmap(bitmap));
bitmap.unlockPixels();
(*target)[SKJSONCANVAS_ATTRIBUTE_COLOR] = Json::Value(color_type_name(bitmap.colorType()));
(*target)[SKJSONCANVAS_ATTRIBUTE_ALPHA] = Json::Value(alpha_type_name(bitmap.alphaType()));
bool success = flatten(*image, target, sendBinaries);
return success;
}
// copyTo() should preserve isOpaque when it makes sense
static void test_isOpaque(skiatest::Reporter* reporter,
const SkBitmap& srcOpaque, const SkBitmap& srcPremul,
SkColorType dstColorType) {
SkBitmap dst;
if (canHaveAlpha(srcPremul.colorType()) && canHaveAlpha(dstColorType)) {
REPORTER_ASSERT(reporter, srcPremul.copyTo(&dst, dstColorType));
REPORTER_ASSERT(reporter, dst.colorType() == dstColorType);
if (srcPremul.isOpaque() != dst.isOpaque()) {
report_opaqueness(reporter, srcPremul, dst);
}
}
REPORTER_ASSERT(reporter, srcOpaque.copyTo(&dst, dstColorType));
REPORTER_ASSERT(reporter, dst.colorType() == dstColorType);
if (srcOpaque.isOpaque() != dst.isOpaque()) {
report_opaqueness(reporter, srcOpaque, dst);
}
}
bool SkDisplacementMapEffect::onFilterImage(Proxy* proxy,
const SkBitmap& src,
const Context& ctx,
SkBitmap* dst,
SkIPoint* offset) const {
SkBitmap displ = src, color = src;
SkIPoint colorOffset = SkIPoint::Make(0, 0), displOffset = SkIPoint::Make(0, 0);
if (!this->filterInput(1, proxy, src, ctx, &color, &colorOffset) ||
!this->filterInput(0, proxy, src, ctx, &displ, &displOffset)) {
return false;
}
if ((displ.colorType() != kN32_SkColorType) ||
(color.colorType() != kN32_SkColorType)) {
return false;
}
SkIRect bounds;
// Since computeDisplacement does bounds checking on color pixel access, we don't need to pad
// the color bitmap to bounds here.
SkIRect srcBounds = color.bounds();
srcBounds.offset(colorOffset);
if (!this->applyCropRect(ctx, srcBounds, &bounds)) {
return false;
}
SkIRect displBounds;
if (!this->applyCropRect(ctx, proxy, displ, &displOffset, &displBounds, &displ)) {
return false;
}
if (!bounds.intersect(displBounds)) {
return false;
}
SkAutoLockPixels alp_displacement(displ), alp_color(color);
if (!displ.getPixels() || !color.getPixels()) {
return false;
}
SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
if (!device) {
return false;
}
*dst = device->accessBitmap(false);
SkAutoLockPixels alp_dst(*dst);
SkVector scale = SkVector::Make(fScale, fScale);
ctx.ctm().mapVectors(&scale, 1);
SkIRect colorBounds = bounds;
colorBounds.offset(-colorOffset);
computeDisplacement(fXChannelSelector, fYChannelSelector, scale, dst,
&displ, colorOffset - displOffset, &color, colorBounds);
offset->fX = bounds.left();
offset->fY = bounds.top();
return true;
}
status_t BootAnimation::initTexture(Texture* texture, AssetManager& assets,
const char* name) {
Asset* asset = assets.open(name, Asset::ACCESS_BUFFER);
if (asset == NULL)
return NO_INIT;
SkBitmap bitmap;
SkImageDecoder::DecodeMemory(asset->getBuffer(false), asset->getLength(),
&bitmap, kUnknown_SkColorType, SkImageDecoder::kDecodePixels_Mode);
asset->close();
delete asset;
// ensure we can call getPixels(). No need to call unlock, since the
// bitmap will go out of scope when we return from this method.
bitmap.lockPixels();
const int w = bitmap.width();
const int h = bitmap.height();
const void* p = bitmap.getPixels();
GLint crop[4] = { 0, h, w, -h };
texture->w = w;
texture->h = h;
glGenTextures(1, &texture->name);
glBindTexture(GL_TEXTURE_2D, texture->name);
switch (bitmap.colorType()) {
case kAlpha_8_SkColorType:
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, w, h, 0, GL_ALPHA,
GL_UNSIGNED_BYTE, p);
break;
case kARGB_4444_SkColorType:
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
GL_UNSIGNED_SHORT_4_4_4_4, p);
break;
case kN32_SkColorType:
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
GL_UNSIGNED_BYTE, p);
break;
case kRGB_565_SkColorType:
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB,
GL_UNSIGNED_SHORT_5_6_5, p);
break;
default:
break;
}
glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
return NO_ERROR;
}
/* Encode bitmaps via CGImageDestination. We setup a DataConsumer which writes
to our SkWStream. Since we don't reference/own the SkWStream, our consumer
must only live for the duration of the onEncode() method.
*/
bool SkEncodeImageWithCG(SkWStream* stream, const SkPixmap& pixmap, SkEncodedImageFormat format) {
SkBitmap bm;
if (!bm.installPixels(pixmap)) {
return false;
}
bm.setImmutable();
CFStringRef type;
switch (format) {
case SkEncodedImageFormat::kICO:
type = kUTTypeICO;
break;
case SkEncodedImageFormat::kBMP:
type = kUTTypeBMP;
break;
case SkEncodedImageFormat::kGIF:
type = kUTTypeGIF;
break;
case SkEncodedImageFormat::kJPEG:
type = kUTTypeJPEG;
break;
case SkEncodedImageFormat::kPNG:
// PNG encoding an ARGB_4444 bitmap gives the following errors in GM:
// <Error>: CGImageDestinationAddImage image could not be converted to destination
// format.
// <Error>: CGImageDestinationFinalize image destination does not have enough images
// So instead we copy to 8888.
if (bm.colorType() == kARGB_4444_SkColorType) {
SkBitmap bitmapN32;
bitmapN32.allocPixels(bm.info().makeColorType(kN32_SkColorType));
bm.readPixels(bitmapN32.info(), bitmapN32.getPixels(), bitmapN32.rowBytes(), 0, 0);
bm.swap(bitmapN32);
}
type = kUTTypePNG;
break;
default:
return false;
}
CGImageDestinationRef dst = SkStreamToImageDestination(stream, type);
if (nullptr == dst) {
return false;
}
SkAutoTCallVProc<const void, CFRelease> ardst(dst);
CGImageRef image = SkCreateCGImageRef(bm);
if (nullptr == image) {
return false;
}
SkAutoTCallVProc<CGImage, CGImageRelease> agimage(image);
CGImageDestinationAddImage(dst, image, nullptr);
return CGImageDestinationFinalize(dst);
}
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
SkScalar horizMargin = 10;
SkScalar vertMargin = 10;
SkBitmap src;
src.allocN32Pixels(40, 40);
SkCanvas canvasTmp(src);
draw_checks(&canvasTmp, 40, 40);
for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
src.copyTo(&fDst[i], gColorTypes[i]);
}
canvas->clear(0xFFDDDDDD);
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
SkScalar width = SkIntToScalar(40);
SkScalar height = SkIntToScalar(40);
if (paint.getFontSpacing() > height) {
height = paint.getFontSpacing();
}
for (unsigned i = 0; i < NUM_CONFIGS; i++) {
const char* name = gColorTypeNames[src.colorType()];
SkScalar textWidth = paint.measureText(name, strlen(name));
if (textWidth > width) {
width = textWidth;
}
}
SkScalar horizOffset = width + horizMargin;
SkScalar vertOffset = height + vertMargin;
canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
for (unsigned i = 0; i < NUM_CONFIGS; i++) {
canvas->save();
// Draw destination config name
const char* name = gColorTypeNames[fDst[i].colorType()];
SkScalar textWidth = paint.measureText(name, strlen(name));
SkScalar x = (width - textWidth) / SkScalar(2);
SkScalar y = paint.getFontSpacing() / SkScalar(2);
canvas->drawText(name, strlen(name), x, y, paint);
// Draw destination bitmap
canvas->translate(0, vertOffset);
x = (width - 40) / SkScalar(2);
canvas->drawBitmap(fDst[i], x, 0, &paint);
canvas->restore();
canvas->translate(horizOffset, 0);
}
}
void
SourceSurfaceSkia::DrawTargetWillChange()
{
if (mDrawTarget) {
MaybeUnlock();
mDrawTarget = nullptr;
SkBitmap temp = mBitmap;
mBitmap.reset();
temp.copyTo(&mBitmap, temp.colorType());
}
}
/**
* Next test is to see whether or not reading an unpremultiplied KTX file accurately
* creates a premultiplied buffer...
*/
DEF_TEST(KtxReadUnpremul, reporter) {
static const uint8_t kHalfWhiteKTX[] = {
0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, // First twelve bytes is magic
0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A, // KTX identifier string
0x01, 0x02, 0x03, 0x04, // Then magic endian specifier
0x01, 0x14, 0x00, 0x00, // uint32_t fGLType;
0x01, 0x00, 0x00, 0x00, // uint32_t fGLTypeSize;
0x08, 0x19, 0x00, 0x00, // uint32_t fGLFormat;
0x58, 0x80, 0x00, 0x00, // uint32_t fGLInternalFormat;
0x08, 0x19, 0x00, 0x00, // uint32_t fGLBaseInternalFormat;
0x02, 0x00, 0x00, 0x00, // uint32_t fPixelWidth;
0x02, 0x00, 0x00, 0x00, // uint32_t fPixelHeight;
0x00, 0x00, 0x00, 0x00, // uint32_t fPixelDepth;
0x00, 0x00, 0x00, 0x00, // uint32_t fNumberOfArrayElements;
0x01, 0x00, 0x00, 0x00, // uint32_t fNumberOfFaces;
0x01, 0x00, 0x00, 0x00, // uint32_t fNumberOfMipmapLevels;
0x00, 0x00, 0x00, 0x00, // uint32_t fBytesOfKeyValueData;
0x10, 0x00, 0x00, 0x00, // image size: 2x2 image of RGBA = 4 * 4 = 16 bytes
0xFF, 0xFF, 0xFF, 0x80, // Pixel 1
0xFF, 0xFF, 0xFF, 0x80, // Pixel 2
0xFF, 0xFF, 0xFF, 0x80, // Pixel 3
0xFF, 0xFF, 0xFF, 0x80};// Pixel 4
SkAutoTDelete<SkMemoryStream> stream(new SkMemoryStream(kHalfWhiteKTX, sizeof(kHalfWhiteKTX)));
REPORTER_ASSERT(reporter, stream);
SkBitmap decodedBitmap;
bool imageDecodeSuccess = SkImageDecoder::DecodeStream(stream, &decodedBitmap);
if (!imageDecodeSuccess) {
ERRORF(reporter, "failed to decode the KTX stream");
return;
}
REPORTER_ASSERT(reporter, decodedBitmap.colorType() == kN32_SkColorType);
REPORTER_ASSERT(reporter, decodedBitmap.alphaType() == kPremul_SkAlphaType);
REPORTER_ASSERT(reporter, decodedBitmap.width() == 2);
REPORTER_ASSERT(reporter, decodedBitmap.height() == 2);
REPORTER_ASSERT(reporter, !(decodedBitmap.empty()));
uint8_t *decodedPixels = reinterpret_cast<uint8_t*>(decodedBitmap.getPixels());
REPORTER_ASSERT(reporter, decodedPixels);
uint8_t *row = decodedPixels;
for (int j = 0; j < decodedBitmap.height(); ++j) {
for (int i = 0; i < decodedBitmap.width(); ++i) {
SkPMColor pixel = *(reinterpret_cast<SkPMColor*>(row + i*sizeof(SkPMColor)));
REPORTER_ASSERT(reporter, SkPreMultiplyARGB(0x80, 0xFF, 0xFF, 0xFF) == pixel);
}
row += decodedBitmap.rowBytes();
}
}
bool SkBitmapProcShader::CanDo(const SkBitmap& bm, TileMode tx, TileMode ty) {
switch (bm.colorType()) {
case kAlpha_8_SkColorType:
case kRGB_565_SkColorType:
case kIndex_8_SkColorType:
case kN32_SkColorType:
// if (tx == ty && (kClamp_TileMode == tx || kRepeat_TileMode == tx))
return true;
default:
break;
}
return false;
}
PassRefPtr<JSONObject> LoggingCanvas::objectForSkBitmap(const SkBitmap& bitmap)
{
RefPtr<JSONObject> bitmapItem = JSONObject::create();
bitmapItem->setNumber("width", bitmap.width());
bitmapItem->setNumber("height", bitmap.height());
bitmapItem->setString("config", colorTypeName(bitmap.colorType()));
bitmapItem->setBoolean("opaque", bitmap.isOpaque());
bitmapItem->setBoolean("immutable", bitmap.isImmutable());
bitmapItem->setBoolean("volatile", bitmap.isVolatile());
bitmapItem->setNumber("genID", bitmap.getGenerationID());
bitmapItem->setObject("data", objectForBitmapData(bitmap));
return bitmapItem.release();
}
/* Encode bitmaps via CGImageDestination. We setup a DataConsumer which writes
to our SkWStream. Since we don't reference/own the SkWStream, our consumer
must only live for the duration of the onEncode() method.
*/
bool SkImageEncoder_CG::onEncode(SkWStream* stream, const SkBitmap& bm,
int quality) {
// Used for converting a bitmap to 8888.
const SkBitmap* bmPtr = &bm;
SkBitmap bitmap8888;
CFStringRef type;
switch (fType) {
case kICO_Type:
type = kUTTypeICO;
break;
case kBMP_Type:
type = kUTTypeBMP;
break;
case kGIF_Type:
type = kUTTypeGIF;
break;
case kJPEG_Type:
type = kUTTypeJPEG;
break;
case kPNG_Type:
// PNG encoding an ARGB_4444 bitmap gives the following errors in GM:
// <Error>: CGImageDestinationAddImage image could not be converted to destination
// format.
// <Error>: CGImageDestinationFinalize image destination does not have enough images
// So instead we copy to 8888.
if (bm.colorType() == kARGB_4444_SkColorType) {
bm.copyTo(&bitmap8888, kN32_SkColorType);
bmPtr = &bitmap8888;
}
type = kUTTypePNG;
break;
default:
return false;
}
CGImageDestinationRef dst = SkStreamToImageDestination(stream, type);
if (NULL == dst) {
return false;
}
SkAutoTCallVProc<const void, CFRelease> ardst(dst);
CGImageRef image = SkCreateCGImageRef(*bmPtr);
if (NULL == image) {
return false;
}
SkAutoTCallVProc<CGImage, CGImageRelease> agimage(image);
CGImageDestinationAddImage(dst, image, NULL);
return CGImageDestinationFinalize(dst);
}
sk_sp<SkData> encode_bitmap_for_png(SkBitmap bitmap) {
const int w = bitmap.width(),
h = bitmap.height();
// PNG wants unpremultiplied 8-bit RGBA pixels (16-bit could work fine too).
// We leave the gamma of these bytes unspecified, to continue the status quo,
// which we think generally is to interpret them as sRGB.
SkAutoTMalloc<uint32_t> rgba(w*h);
auto srgbColorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
if (bitmap. colorType() == kN32_SkColorType &&
bitmap.colorSpace() == srgbColorSpace.get()) {
// These are premul sRGB 8-bit pixels in SkPMColor order.
// We want unpremul sRGB 8-bit pixels in RGBA order. We'll get there via floats.
bitmap.lockPixels();
auto px = (const uint32_t*)bitmap.getPixels();
if (!px) {
return nullptr;
}
for (int i = 0; i < w*h; i++) {
Sk4f fs = Sk4f_fromS32(px[i]); // Convert up to linear floats.
#if defined(SK_PMCOLOR_IS_BGRA)
fs = SkNx_shuffle<2,1,0,3>(fs); // Shuffle to RGBA, if not there already.
#endif
float invA = 1.0f / fs[3];
fs = fs * Sk4f(invA, invA, invA, 1); // Unpremultiply.
rgba[i] = Sk4f_toS32(fs); // Pack down to sRGB bytes.
}
} else if (bitmap.colorType() == kRGBA_F16_SkColorType) {
// These are premul linear half-float pixels in RGBA order.
// We want unpremul sRGB 8-bit pixels in RGBA order. We'll get there via floats.
bitmap.lockPixels();
auto px = (const uint64_t*)bitmap.getPixels();
if (!px) {
return nullptr;
}
for (int i = 0; i < w*h; i++) {
// Convert up to linear floats.
Sk4f fs(SkHalfToFloat(static_cast<SkHalf>(px[i] >> (0 * 16))),
SkHalfToFloat(static_cast<SkHalf>(px[i] >> (1 * 16))),
SkHalfToFloat(static_cast<SkHalf>(px[i] >> (2 * 16))),
SkHalfToFloat(static_cast<SkHalf>(px[i] >> (3 * 16))));
fs = Sk4f::Max(0.0f, Sk4f::Min(fs, 1.0f)); // Clamp
float invA = 1.0f / fs[3];
fs = fs * Sk4f(invA, invA, invA, 1); // Unpremultiply.
rgba[i] = Sk4f_toS32(fs); // Pack down to sRGB bytes.
}
} else {
Sprite_D32_S32(const SkBitmap& src, U8CPU alpha) : INHERITED(src) {
SkASSERT(src.colorType() == kN32_SkColorType);
unsigned flags32 = 0;
if (255 != alpha) {
flags32 |= SkBlitRow::kGlobalAlpha_Flag32;
}
if (!src.isOpaque()) {
flags32 |= SkBlitRow::kSrcPixelAlpha_Flag32;
}
fProc32 = SkBlitRow::Factory32(flags32);
fAlpha = alpha;
}
bool SkANP::SetBitmap(ANPBitmap* dst, const SkBitmap& src) {
if (!(dst->baseAddr = src.getPixels())) {
SkDebugf("SkANP::SetBitmap - getPixels() returned null\n");
return false;
}
switch (src.colorType()) {
case SkColorType::kRGBA_8888_SkColorType:
dst->format = kRGBA_8888_ANPBitmapFormat;
break;
case SkColorType::kRGB_565_SkColorType:
dst->format = kRGB_565_ANPBitmapFormat;
break;
default:
SkDebugf("SkANP::SetBitmap - unsupported src.colorType %d\n", src.colorType());
return false;
}
dst->width = src.width();
dst->height = src.height();
dst->rowBytes = src.rowBytes();
return true;
}
