diff options
author | 2015-08-13 13:07:03 -0700 | |
---|---|---|
committer | 2015-08-13 13:07:03 -0700 | |
commit | d518ea7927f9f4e0ed5b4134d1b4f48243855a47 (patch) | |
tree | b4f71744107a3267e41ee086b6a41164791f6faa /src/codec/SkCodec_wbmp.cpp | |
parent | 1acf250f922a547018bab25676d63f3bb090be71 (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
Review URL: https://codereview.chromium.org/1260673002
Diffstat (limited to 'src/codec/SkCodec_wbmp.cpp')
-rw-r--r-- | src/codec/SkCodec_wbmp.cpp | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/codec/SkCodec_wbmp.cpp b/src/codec/SkCodec_wbmp.cpp index 6f98294fc6..3081a3bba9 100644 --- a/src/codec/SkCodec_wbmp.cpp +++ b/src/codec/SkCodec_wbmp.cpp @@ -9,6 +9,7 @@ #include "SkCodecPriv.h" #include "SkColorPriv.h" #include "SkColorTable.h" +#include "SkScaledCodec.h" #include "SkStream.h" #include "SkCodec_wbmp.h" @@ -80,8 +81,8 @@ SkSwizzler* SkWbmpCodec::initializeSwizzler(const SkImageInfo& info, case kIndex_8_SkColorType: case kN32_SkColorType: case kGray_8_SkColorType: - return SkSwizzler::CreateSwizzler( - SkSwizzler::kBit, ctable, info, opts.fZeroInitialized); + return SkSwizzler::CreateSwizzler(SkSwizzler::kBit, ctable, info, opts.fZeroInitialized, + this->getInfo()); default: return NULL; } @@ -201,7 +202,9 @@ public: return SkCodec::kUnimplemented; } if (dstInfo.dimensions() != this->getInfo().dimensions()) { - return SkCodec::kInvalidScale; + if (!SkScaledCodec::DimensionsSupportedForSampling(this->getInfo(), dstInfo)) { + return SkCodec::kInvalidScale; + } } if (!valid_alpha(dstInfo.alphaType(), this->getInfo().alphaType())) { @@ -220,12 +223,16 @@ public: fSwizzler.reset(fCodec->initializeSwizzler(dstInfo, get_color_ptr(fColorTable.get()), options)); if (NULL == fSwizzler.get()) { - return SkCodec::kInvalidInput; + return SkCodec::kInvalidConversion; } return SkCodec::kSuccess; } + SkEncodedFormat onGetEncodedFormat() const { + return kWBMP_SkEncodedFormat; + } + private: SkAutoTDelete<SkWbmpCodec> fCodec; SkAutoTUnref<SkColorTable> fColorTable; |