libass - a portable subtitle renderer for the ASS/SSA (Advanced Substation Alpha/Substation Alpha) subtitle format

	Commit message (Collapse)	Author	Age	Files	Lines
*	outline: eliminate use of VLA	Dr.Smile	2019-05-20	1	-2/+2
\| \| \| \|	Fixes https://github.com/libass/libass/pull/321.
*	outline: rearrange allocations	Dr.Smile	2019-05-20	1	-4/+6
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*	Move outline transformations to ass_outline.c	Dr.Smile	2019-05-20	1	-6/+58
\| \| \| \| \| \| \| \| \|	This also potentially improves performance by copying and transforming in a single operation rather than copying first and then transforming the result. Also transformation function is specialized for case where expensive perspective division is not necessary.
*	Consolidate and quantize all transformations	Dr.Smile	2019-05-20	1	-36/+8
\| \| \| \| \| \| \| \| \| \| \| \| \| \|	This commit defers all outline transformations until rasterization stage. Combined transformation is then quantized and used as bitmap key. That should improve performance of slow animations. Also caching of initial and stroked outlines and bitmaps is now separate in preparation to proper error estimation for stroker stage. Note that Z-clipping for perspective transformations is now done differently compared to VSFilter. That clipping is mostly safety feature to protect from overflows and divisions by zero and is almost never triggered in real-world subtitles.
*	drawing: separate drawing text reading from outline construction	Dr.Smile	2019-05-19	1	-0/+11
\| \| \| \|	Purpose of this commit is to simplify logic behind drawing handling.
*	stroker: correctly handle case of many small segments	Dr.Smile	2019-01-11	1	-45/+49
\| \| \| \|	Fixes: https://github.com/libass/libass/issues/326.
*	Reorganize outline transformation functions	Dr.Smile	2017-09-17	1	-7/+9
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*	Switch to more efficient representation of outlines	Dr.Smile	2017-09-17	1	-248/+262
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*	Switch to native coordinate system for outlines	Dr.Smile	2017-09-17	1	-33/+18
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*	Replace FreeType types with libass native types	Dr.Smile	2017-09-17	1	-91/+73
\| \| \| \| \| \|	FT_Vector and FT_BBox types are based on FT_Pos, which is alias of long. FreeType treats it as 32-bit integer, but on some platforms long can be 64-bit. That leads to wasted memory and suboptimal performance.
*	stroker: fix wording of algorithm description	Dr.Smile	2017-09-17	1	-6/+6
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*	stroker: add algorithm description	Dr.Smile	2017-08-01	1	-6/+215
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*	stroker: skip degenerate 2-point contours from broken fonts	Dr.Smile	2017-07-31	1	-6/+14
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*	cosmetic: fix codestyle	Dr.Smile	2017-07-31	1	-5/+5
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*	renderer: switch to using two border outlines instead of one	Dr.Smile	2017-07-31	1	-52/+55
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*	stroker: implement fast two-outline stroker	Dr.Smile	2017-07-31	1	-133/+1037
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*	cosmetic: extract most of the outline-related functions into separate file	Dr.Smile	2017-07-31	1	-0/+275