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draw_simple_scale.c is a cut down version of draw_scale.c, that only
uses filter functions that return values strictly in the 0 to 1 range.
Because of that, we can use bytes rather than ints as intermediate
storage, and have no clipping to do.
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Kammerer reports 90%+ of CPU time is spent in the image scaling code
for his documents on Android.
In this commit we provide ARM optimised cores for the common scaling
routines (1/2/4 components). Tests indicate this doubles the speed of
rendering for a bitmap heavy PDF file on an HTC desire.
This code is included if ARCH_ARM is defined. If ARCH_THUMB is defined
then extra instructions are added to ensure correct interworking.
We also update the Android jni makefiles to set these defines.
We update the ReadMe.txt with more explicit instructions and update with
more modern ndk/sdk versions.
We update build.xml in line with new sdk releases.
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The calculation of the translation due to the mediabox/cropbox was
wrong on android, causing nothing to be rendered.
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If the app was hidden, and then restarted, it would leak lots of
memory due to onCreate not only being called on create. To fix
this, we armour the app a bit aginst such problems, including
adding code to destroy the core when the app really is destroyed.
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In particular say where to get thirdparty and how to generate generated.
Also note that ndk-build should be run in android, NOT in andoid/jni.
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Bring the MuPDF android build up to date with the latest source changes.
Many thanks to Dominic Battre for his helpful report in bug 692222.
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Use tabs for indentation and no extra spaces to align stuff.
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The run-together words are dead! Long live the underscores!
The postscript inspired naming convention of using all run-together
words has served us well, but it is now time for more readable code.
In this commit I have also added the sed script, rename.sed, that I used
to convert the source. Use it on your patches and application code.
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the internal classes.
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