bool SkPDFImage::populate(SkPDFCatalog* catalog) {
if (getState() == kUnused_State) {
// Initializing image data for the first time.
// Fallback method
if (!fStreamValid) {
SkAutoTDelete<SkStream> stream(
extract_image_data(fBitmap, fSrcRect, fIsAlpha, NULL));
this->setData(stream);
fStreamValid = true;
}
return INHERITED::populate(catalog);
}
#ifndef SK_NO_FLATE
else if (getState() == kNoCompression_State) {
// Compression has not been requested when the stream was first created,
// but the new catalog wants it compressed.
if (!getSubstitute()) {
SkPDFStream* substitute = SkNEW_ARGS(SkPDFImage, (*this));
setSubstitute(substitute);
catalog->setSubstitute(this, substitute);
}
return false;
}
#endif // SK_NO_FLATE
return true;
}
bool SkPDFImage::populate(SkPDFCatalog* catalog) {
if (getState() == kUnused_State) {
// Initializing image data for the first time.
SkDynamicMemoryWStream dctCompressedWStream;
if (!skip_compression(catalog) && fEncoder &&
get_uncompressed_size(fBitmap, fSrcRect) > 1) {
SkBitmap subset;
// Extract subset
if (!fBitmap.extractSubset(&subset, fSrcRect)) {
return false;
}
size_t pixelRefOffset = 0;
SkAutoTUnref<SkData> data(fEncoder(&pixelRefOffset, subset));
if (data.get() && data->size() < get_uncompressed_size(fBitmap,
fSrcRect)) {
this->setData(data.get());
insertName("Filter", "DCTDecode");
insertInt("ColorTransform", kNoColorTransform);
insertInt("Length", this->dataSize());
setState(kCompressed_State);
return true;
}
}
// Fallback method
if (!fStreamValid) {
SkAutoTUnref<SkStream> stream(
extract_image_data(fBitmap, fSrcRect, fIsAlpha, NULL));
this->setData(stream);
fStreamValid = true;
}
return INHERITED::populate(catalog);
} else if (getState() == kNoCompression_State &&
!skip_compression(catalog) &&
(SkFlate::HaveFlate() || fEncoder)) {
// Compression has not been requested when the stream was first created,
// but the new catalog wants it compressed.
if (!getSubstitute()) {
SkPDFStream* substitute = SkNEW_ARGS(SkPDFImage, (*this));
setSubstitute(substitute);
catalog->setSubstitute(this, substitute);
}
return false;
}
return true;
}
// static
SkPDFImage* SkPDFImage::CreateImage(const SkBitmap& bitmap,
const SkIRect& srcRect) {
if (bitmap.colorType() == kUnknown_SkColorType) {
return NULL;
}
bool isTransparent = false;
SkAutoTDelete<SkStream> alphaData;
if (!bitmap.isOpaque()) {
// Note that isOpaque is not guaranteed to return false for bitmaps
// with alpha support but a completely opaque alpha channel,
// so alphaData may still be NULL if we have a completely opaque
// (or transparent) bitmap.
alphaData.reset(
extract_image_data(bitmap, srcRect, true, &isTransparent));
}
if (isTransparent) {
return NULL;
}
SkPDFImage* image;
SkColorType colorType = bitmap.colorType();
if (alphaData.get() != NULL && (kN32_SkColorType == colorType ||
kARGB_4444_SkColorType == colorType)) {
if (kN32_SkColorType == colorType) {
image = SkNEW_ARGS(SkPDFImage, (NULL, bitmap, false,
SkIRect::MakeWH(srcRect.width(),
srcRect.height())));
} else {
SkBitmap unpremulBitmap = unpremultiply_bitmap(bitmap, srcRect);
image = SkNEW_ARGS(SkPDFImage, (NULL, unpremulBitmap, false,
SkIRect::MakeWH(srcRect.width(),
srcRect.height())));
}
} else {
image = SkNEW_ARGS(SkPDFImage, (NULL, bitmap, false, srcRect));
}
if (alphaData.get() != NULL) {
SkAutoTUnref<SkPDFImage> mask(
SkNEW_ARGS(SkPDFImage, (alphaData.get(), bitmap, true, srcRect)));
image->insert("SMask", new SkPDFObjRef(mask))->unref();
}
return image;
}
