| 4981d1421e31f4229bb3d00d8b6dc93f21b03871 |
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21-Aug-2012 |
Vikas Arora <vikasa@google.com> |
DO NOT MERGE Support WebP Alpha (Lossless) images
Android/Skia supports pre-multiplied Alpha. WebP image format supports
Alpha via color modes MODE_RGBA & MODE_RGBA_4444 (corresponding ones for
premultiplied alpha are MODE_rgbA & MODE_rgbA_4444).
The pre-requisite change for this one is the libwebp patch:
https://googleplex-android-review.googlesource.com/#/c/219333/
Change-Id: I30b0d8d4b0325eb3c925371ac8f3a9b7d4801639
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| 22c3eb1bb4ab1c58edb7b3dd159e5c1969136c51 |
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31-May-2012 |
Vikas Arora <vikasa@google.com> |
Prepare Skia-Webp decoder for Alpha and lossless.
Change the webp_parse_header to read appropriate header bytes (required
for Alpha & lossless bit-stream);
Replaced call WebPGetInfo with WebPGetFeatures to get hasAlpha
information;
Replaced hard-coded setIsOpaque(true) with setIsOpaque(!hasAlpha);
Refactored code for setting decoder config;
Change-Id: I8208233d1aaa0a213a35dd996a72e43f78901c89
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| 943e1fde4c6ecf0eb8998cd86012caa341a02ccf |
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16-May-2012 |
Owen Lin <owenlin@google.com> |
Add support for reusing bitmap in webp format.
Also relax the constraint of the requested region. Now, we can get a
region that is partially outsides the image.
bug:5884845
Change-Id: Ibf455d176653ef1cf36924d685df1920d23cb542
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| c0b4fa78738acf9ad587eb9fcbc2021be9a3ee77 |
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27-Apr-2012 |
Chet Haase <chet@google.com> |
Handle Bitmap reuse failure more gracefully
A feature in Android 3.0 allows Bitmaps to be reused when
loading a bitmap of the same dimensions. A documented limitation
is that the only formats supported are jpeg and png, the most common
formats for Android. But if you actually try to do it anyway, you'll end
up causing memory trashing and an eventual strange native crash. It's not
pretty.
This fix puts code in other possible image format decoders (gif, ico, and
bmp) to return false from the onDecode() operation, which will result in
an exception being thrown back to the user code.
Issue #6146246 Sparodic crash in GraphicsJNI::allocateJavaPixelRef (memory corruption?)
Change-Id: Ifd3e0f87c9ea6d41a37f58616e1ced0b19132056
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| 8c52c218e8b00b33f837ac4891fcde3a08817169 |
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19-Jul-2011 |
Vikas Arora <vikasa@google.com> |
Add image cropping support in Skia-WebP decoder.
Implement virtual methods 'onBuildTileIndex' & 'onDecodeRegion' for
supporting image cropping for Skia-WebP image Decoder.
Utilize the native rescaling+Cropping capability of WebP-Decoder to
implement image cropping.
- Incorporated code comments from Pascal.
- Found one bug w.r.t setting SampleSize. Rectifying that in this patch.
Change-Id: Ib7b04129a65ed17f845d0600f3553b9b24846838
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| c5013e3870ecf5a7798c1857a3060d880a7bf2c3 |
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18-Jul-2011 |
Vikas Arora <vikasa@google.com> |
Implement on-the-fly image resizing (down-scaling).
Implement on-the-fly image resizing (down-scaling) for WebP images.
The image decoder is aware of the device memory constriant via
SampleSize set by the application like Webkit/WebCore.
sampleSize=1 implies no down-scaling. Likewise, SampleSize=2 implies
resizing image width & height by a factor of '1/2', resulting in '1/4'th
size for the decoded image.
SampleSize is merely a hint from the application to the decoder. Decoder
may choose to ignore this hint and decode the image at full scale.
Native WebP image decoder (new APIs) supports on-the-fly resizing.
Making the Skia-WebP decoder 'SampleSize' aware and implementing the
on-the-fly resizing in this change.
Change-Id: Ibbd62baf4a6ad2d3904aafb22807f4513641e64c
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| 13f6c47b625101944c936a20fb673cbe47b5c747 |
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14-Jul-2011 |
Vikas Arora <vikasa@google.com> |
Use the WebP native color-modes for Skia-WebP-Decoder.
Remove the custom code for decoding WebP image. Use the native
color-modes RGBA, RGBA_4444 & RGB_565 for Skia-WebP-Decoder class.
- Removed other dead code as well.
Change-Id: I414778b71aaea754d92ed6b07ebd7b6336e1f102
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| 82ed38078af4a2b643415a76e84f88754f804709 |
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06-Jul-2011 |
Vikas Arora <vikasa@google.com> |
Add support for WebP incremental decoding.
Updated the Android-Skia-WebP decoder with following changes:
- Added support for incremental WebP decoding. So instead of allocating
input buffer corresponding to the whole image (could be few MBs), the
input is read iteratively in a buffer size of 64KB.
- Refactored onDecode method (O(200) lines) to a smaller (O(30) lines)
method with 2-3 helper functions.
- Removed low (byte-level) parsing from this code and calling WebP
public APIs for the same (like WebPGetInfo).
- Incorporated Pascal's feedback.
- Few more feedback from Pascal.
Change-Id: I104822ec3922eca1efc19422908f07770c4c140b
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| a059123d8eb75302b13a7fd831478413d124d618 |
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22-Jun-2011 |
Vikas Arora <vikasa@google.com> |
Add WebP Encoder support to SkImageEncoder.
Extending Skia-WebP interface to handle the WebP encoding as well.
The WebP encoding is required for sharing WebP images and transcoding
images from other formats like PNG/JPEG to WEBP.
Change-Id: I23d52323abf5e7eec0c6d3e0159a1ca7baee468b
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| b5635a2ff98e9de637b0f87744ceca7b86891a0f |
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02-Jun-2011 |
Vikas Arora <vikasa@google.com> |
Updated Skia-Webp wrapper to work with latest version (0.1.2)
issue: 3291572
Change-Id: I86258b82a9105e5db459c436d8bcfa1841609ed7
/external/skia/src/images/SkImageDecoder_libwebp.cpp
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| 8432fc7b32e4de877bb86b38c050b944bed53f14 |
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22-Dec-2010 |
Eric Hassold <hassold@google.com> |
Add support for WebP format in Skia
This enable Skia to decode WebP images. Since BitmapFactory relies
on Skia to decode images, this aims at adding support for WebP format
in any application relying on BitmapFactory. Decoder relies on
libwepb library, imported as external library in external/webp in
Android source tree.
Change-Id: I13ef4c1404b989af6a856e9150c62e297200331b
/external/skia/src/images/SkImageDecoder_libwebp.cpp
|