// Verify that a webp image can be animated scaled down. This image has a
// kRestoreBG frame, so it is an interesting image to test. After decoding that
// frame, we have to erase its rectangle. The rectangle has to be adjusted
// based on the scaled size.
DEF_TEST(AndroidCodec_animated, r) {
if (GetResourcePath().isEmpty()) {
return;
}
const char* file = "images/required.webp";
sk_sp<SkData> data(GetResourceAsData(file));
if (!data) {
ERRORF(r, "Missing %s", file);
return;
}
auto codec = SkAndroidCodec::MakeFromCodec(SkCodec::MakeFromData(std::move(data)));
if (!codec) {
ERRORF(r, "Failed to decode %s", file);
return;
}
auto info = codec->getInfo().makeAlphaType(kPremul_SkAlphaType);
for (int sampleSize : { 8, 32, 100 }) {
auto dimensions = codec->codec()->getScaledDimensions(1.0f / sampleSize);
info = info.makeWH(dimensions.width(), dimensions.height());
SkBitmap bm;
bm.allocPixels(info);
SkCodec::Options options;
for (int i = 0; i < codec->codec()->getFrameCount(); ++i) {
SkCodec::FrameInfo frameInfo;
REPORTER_ASSERT(r, codec->codec()->getFrameInfo(i, &frameInfo));
if (5 == i) {
REPORTER_ASSERT(r, frameInfo.fDisposalMethod
== SkCodecAnimation::DisposalMethod::kRestoreBGColor);
}
options.fFrameIndex = i;
options.fPriorFrame = i - 1;
info = info.makeAlphaType(frameInfo.fAlphaType);
const auto result = codec->codec()->getPixels(info, bm.getPixels(), bm.rowBytes(),
&options);
REPORTER_ASSERT(r, result == SkCodec::kSuccess);
}
}
}
sk_sp<SkAnimatedImage> SkAnimatedImage::Make(std::unique_ptr<SkAndroidCodec> codec,
SkISize scaledSize, SkIRect cropRect, sk_sp<SkPicture> postProcess) {
if (!codec) {
return nullptr;
}
SkISize decodeSize = scaledSize;
auto decodeInfo = codec->getInfo();
if (codec->getEncodedFormat() == SkEncodedImageFormat::kWEBP
&& scaledSize.width() < decodeInfo.width()
&& scaledSize.height() < decodeInfo.height()) {
// libwebp can decode to arbitrary smaller sizes.
decodeInfo = decodeInfo.makeWH(decodeSize.width(), decodeSize.height());
}
auto image = sk_sp<SkAnimatedImage>(new SkAnimatedImage(std::move(codec), scaledSize,
decodeInfo, cropRect, std::move(postProcess)));
if (!image->fDisplayFrame.fBitmap.getPixels()) {
// tryAllocPixels failed.
return nullptr;
}
return image;
}
