Merge "Encode F16 Bitmaps to 8-bit P3" into pi-dev (5a0b48a1) · Commits · e / os / android_frameworks_base

core/jni/android/graphics/Bitmap.cpp

+22 −0

Original line number	Diff line number	Diff line
		@@ -921,6 +921,28 @@ static jboolean Bitmap_compress(JNIEnv* env, jobject clazz, jlong bitmapHandle,

		SkBitmap skbitmap;
		bitmap->getSkBitmap(&skbitmap);
		if (skbitmap.colorType() == kRGBA_F16_SkColorType) {
		// Convert to P3 before encoding. This matches SkAndroidCodec::computeOutputColorSpace
		// for wide gamuts.
		auto cs = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
		SkColorSpace::kDCIP3_D65_Gamut);
		auto info = skbitmap.info().makeColorType(kRGBA_8888_SkColorType)
		.makeColorSpace(std::move(cs));
		SkBitmap p3;
		if (!p3.tryAllocPixels(info)) {
		return JNI_FALSE;
		}
		auto xform = SkColorSpaceXform::New(skbitmap.colorSpace(), info.colorSpace());
		if (!xform) {
		return JNI_FALSE;
		}
		if (!xform->apply(SkColorSpaceXform::kRGBA_8888_ColorFormat, p3.getPixels(),
		SkColorSpaceXform::kRGBA_F16_ColorFormat, skbitmap.getPixels(),
		info.width() * info.height(), kUnpremul_SkAlphaType)) {
		return JNI_FALSE;
		}
		skbitmap = p3;
		}
		return SkEncodeImage(strm.get(), skbitmap, fm, quality) ? JNI_TRUE : JNI_FALSE;
		}