Scanline decoding for gifs
BUG=skia:
Committed: https://skia.googlesource.com/skia/+/e9c10b9121887e8c300bd41357461418e061984d
Review URL: https://codereview.chromium.org/1305123002
diff --git a/src/codec/SkCodecPriv.h b/src/codec/SkCodecPriv.h
index 7260741..2769cec 100644
--- a/src/codec/SkCodecPriv.h
+++ b/src/codec/SkCodecPriv.h
@@ -31,6 +31,17 @@
SkSwizzler::GetResult(zeroAlpha, maxAlpha);
/*
+ * returns a scaled dimension based on the original dimension and the sampleSize
+ * NOTE: we round down here for scaled dimension to match the behavior of SkImageDecoder
+ */
+static int get_scaled_dimension(int srcDimension, int sampleSize) {
+ if (sampleSize > srcDimension) {
+ return 1;
+ }
+ return srcDimension / sampleSize;
+}
+
+/*
* Returns the first coordinate that we will keep during a scaled decode.
* The output can be interpreted as an x-coordinate or a y-coordinate.
*
@@ -137,7 +148,7 @@
SkASSERT(nullptr != inputColorPtr);
SkASSERT(nullptr != inputColorCount);
SkASSERT(nullptr != colorTable);
- memcpy(inputColorPtr, colorTable->readColors(), *inputColorCount * 4);
+ memcpy(inputColorPtr, colorTable->readColors(), *inputColorCount * sizeof(SkPMColor));
}
}