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| author |  emmaleer <emmaleer@google.com> | 2015-08-14 07:44:46 -0700 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2015-08-14 07:44:46 -0700 |
| commit | 8f4ba76742c329bc4d5e1b8ca376d27922bd00b1 (patch) | |
| tree | ee3b69a6972cb3e16e4c0e85723477bea9dd5387 /src/codec/SkCodec_libpng.h | |
| parent | 1bef9f59c566cc54c2259cc4d0171c115157cd1c (diff) | |
SkScaledCodec class
This class does scaling by using a scanlineDecoder.
getScanlines and skipScanlines are used for y sampling,
the swizzler is used for x sampling
this class is currently only working for png and jpeg images
I will update other Codec types to work soon
For SkJpegCodec to implement width wise swizzling it now
uses a swizzler. I ran performance tests on this change.
Here are the performance test results:
https://docs.google.com/a/google.com/spreadsheets/d/1D7-Q_GXD_dI68LZO005NNvb8Wq2Ee0wEBEPG72671yw/edit?usp=sharing
BUG=skia:
Committed: https://skia.googlesource.com/skia/+/0944100ac89f797714eeae0cf2875e2335ff52ee
Committed: https://skia.googlesource.com/skia/+/d518ea7927f9f4e0ed5b4134d1b4f48243855a47
Committed: https://skia.googlesource.com/skia/+/b157917507d4f7d2651f0aeb566d31603cc02240
Review URL: https://codereview.chromium.org/1260673002
Diffstat (limited to 'src/codec/SkCodec_libpng.h')
| -rw-r--r-- | src/codec/SkCodec_libpng.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/codec/SkCodec_libpng.h b/src/codec/SkCodec_libpng.h index 890402200c..e8807499ea 100644 --- a/src/codec/SkCodec_libpng.h +++ b/src/codec/SkCodec_libpng.h @@ -37,6 +37,7 @@ protected: SkEncodedFormat onGetEncodedFormat() const override { return kPNG_SkEncodedFormat; } bool onRewind() override; bool onReallyHasAlpha() const override { return fReallyHasAlpha; } + private: png_structp fPng_ptr; png_infop fInfo_ptr; @@ -52,7 +53,6 @@ private: SkPngCodec(const SkImageInfo&, SkStream*, png_structp, png_infop, int); - // Helper to set up swizzler and color table. Also calls png_read_update_info. Result initializeSwizzler(const SkImageInfo& requestedInfo, const Options&, SkPMColor*, int* ctableCount); |