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Commit 818328c4 authored by John Reck's avatar John Reck Committed by Sally Qi
Browse files

Support decoding gainmaps to alpha8 with BitmapFactory. 

Bug: 271174821
Test: android.graphics.cts.GainmapTest
Change-Id: Ifdb285ea3f6bb6a3de44b216d1b4bb2c1826469a
parent bce1bf4f

libs/hwui/jni/BitmapFactory.cpp

+10 −2
Original line number Diff line number Diff line
@@ -194,7 +194,11 @@ static bool decodeGainmap(std::unique_ptr<SkStream> gainmapStream, const SkGainm 
        ALOGE("Can not create a codec for Gainmap.");

        return false;

    }

    SkColorType decodeColorType = codec->computeOutputColorType(kN32_SkColorType);

    SkColorType decodeColorType = kN32_SkColorType;

    if (codec->getInfo().colorType() == kGray_8_SkColorType) {

        decodeColorType = kGray_8_SkColorType;

    }

    decodeColorType = codec->computeOutputColorType(decodeColorType);

    sk_sp<SkColorSpace> decodeColorSpace = codec->computeOutputColorSpace(decodeColorType, nullptr);



    SkISize size = codec->getSampledDimensions(sampleSize);
@@ -217,7 +221,11 @@ static bool decodeGainmap(std::unique_ptr<SkStream> gainmapStream, const SkGainm 
    const SkImageInfo decodeInfo = SkImageInfo::Make(size.width(), size.height(), decodeColorType,

                                                     alphaType, decodeColorSpace);



    const SkImageInfo& bitmapInfo = decodeInfo;

    SkImageInfo bitmapInfo = decodeInfo;

    if (decodeColorType == kGray_8_SkColorType) {

        // We treat gray8 as alpha8 in Bitmap's API surface

        bitmapInfo = bitmapInfo.makeColorType(kAlpha_8_SkColorType);

    }

    SkBitmap decodeBitmap;

    sk_sp<Bitmap> nativeBitmap = nullptr;