| Commit message (Collapse) | Author | Age | Files | Lines |
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Use 50% alpha for the shadow. Looks nicer and is just like VSFilter.
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Track if we already parsed a fade or a alignment tag and ignore all
further tags.
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After font reselection, loop through all charmaps if no glyph can't be
found until we hopefully find one that works. If we get here at all, the
font is seriously broken, so this is unlikely to harm anything.
This improves the last resort charmap fallback introduced in 96057d.
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VSFilter always matches style names case sensitive.
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Make the "Default" style, useful as a fallback and required by few
scripts for proper rendering, actually do something sensible. Font,
sizes, et cetera are set up mostly like VSFilter.
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Yet another VSFilter idiosyncracy: when the glyph fill is invisible
(alpha 0xFF) and there is no border, do not render any shadow.
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MPlayer is able to use this configuration with the -nofontconfig flag;
this fixes crashes in case no font is available. Fixes a crash at uninit
as well.
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libpng 1.5 renamed the jmpbuf variable to jmp_buf. Since direct access
to this variable is deprecated, it makes more sense to use the function
png_jmpbuf() instead.
Also, rename the --enable-png switch to --enable-test to make clear this
is a debugging option.
Initial patch by Alexis Ballier, aballier AT gentoo DOT org.
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Enable configure to require fontconfig by default; libass is quite
useless for most purposes without it anyway. If you want to build
without fontconfig, explicitly disable it with --disable-fontconfig.
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wrap_lines_smart() got stuck if there was a long line without spaces
followed by a hard linebreak. When the loop got to the '\n' character
the hard linebreak was not handled because the line was already over
wrap length and soft linebreak handling had precedence. Then at the
end of the loop body the code noted that the hard linebreak hadn't yet
been handled, and the same glyph needed to be reprocessed for that.
However, the soft linebreak code hadn't actually done anything because
there was no space to break at, and thus the loop repeated from the
exact same state forever.
Handle this by removing the check for an additional hard linebreak
after a soft linebreak, which stepped back by one char. This is a
very marginal case and shouldn't really matter in practice.
Original patch and parts of this message by uau.
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In hope to make libass as useful as possible, relicense libass to ISC, a
simplified 2-clause BSD license. All contributors who provided
non-trivial changes have granted their permission for this.
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These forms can be used to add or subtract a value from the
current font size instead of setting a new font size. Animations
are supported, but not recommended, as they won't be fluid due to
grid-fitting/hinting.
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It looks like VSFilter only ever wraps on spaces, even if the line
length is going to overflow. We should do that as well.
Fixes a pretty confusing problem with scrolling vertical text.
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The useless "if (foo) free(foo)" idiom is all over the place, just
get rid of it finally...
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Delay allocation of the "faux" glyph until a drawing is parsed.
This helps with fixing a (pretty bad) memory leak and also reduces frame
overhead a little.
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strcasecmp/strncasecmp needs strings.h according to POSIX, so add this
include where these occur.
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Increment shared library revision (due to API additions) and autoconf
version.
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If we're already after the font reselection stage and a glyph cannot be
found in a font, try again with the first charmap as a last resort.
This is needed for old "symbol" fonts, for example.
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This is more irritating than it helps and can seriously spam output.
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Similar to regular glyphs, check the bounding box of the clip mask and
refrain from rendering humongous masks, which can take up considerably
memory.
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Gets rid of another forward declaration.
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Cosmetical simplifications, fix whitespace where useful, remove
deprecated comments.
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These are included by ass_render.h already.
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Now that bitmap glyphs (for vector clip masks) are stored in the glyph
cache, make sure it cannot grow indefinitely easily. Similar to the
bitmap cache, track approximate size of the cached elements and reset
if the cache exceeds a certain limit.
Also, reduce default bitmap cache size to 30 MB as we have essentially
two bitmap caches now. That's still plenty in all use cases where
caching matters.
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Free clip vector drawing if multiple clip vectors appear in a single
line. (In this case the last clip vector is used.)
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Use extremes of all points fed to the parser, instead of only points
that are added to the outline.
Fixes a rendering problem reported on IRC and should fix Issue #7.
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Cache pre-rasterized vector clip masks, big speedup if vector clipping
is used extensively.
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Gets rid of a few forward declarations.
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PAR correction so far merely applied a horizontal scaling factor to
glyphs right after loading. This screws up transformed text,
unfortunately.
It's a much better approach to typeset text without correction and scale
everything at the very end. In MPlayer, an EOSD rendering now looks
exactly the same as a video filter rendering (except for more sharpness
in the EOSD case).
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Limit context printed after parsing errors to 30 characters
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The glyph is inserted into the cache and freed upon cache reset,
so it shouldn't be freed alongside the drawing.
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Let's loop over everything and not just the outline check. *sigh*
Fixes a crash reported by lachs0r on IRC.
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Do not copy glyphs when it isn't really needed.
Profiling with valgrind's callgrind showed that FT_Glyph_Copy takes a
big fraction of the rendering time (~40%) for "simple styled softsubs"
cases. It turned out that glyphs are duplicated much more often than
is necessary. Reducing the number of copies cuts down the rendering
time for the "simple styled softsubs" case by about 70%!
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Reverse "outside" contours with wrong winding correction, require
that a contour is "inside" for considering its removal; Move this
hack into ass_font.c, where it belongs.
Initial patch by uau.
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Use AM_SILENT_RULES in favor of "shave" if automake >= 1.11 is available.
Otherwise, disable silent build.
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Only match outline fonts and take slant and weight into consideration.
This matches all font faces which have at least the slant/weight that is
requested. This fixes issue 23; however, corner cases can be constructed
in which wrong fonts will be matched, if multiple slant/weight variants
of the same font exist, but that is very unlikely in practice.
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The last point wasn't included in cbox calculation, sometimes triggering
removal of inside contours when it wasn't needed.
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Fix for previous commit.
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Add a function to flush all events in a track and increment
LIBASS_VERSION to indicate the addition.
Initial patch by Aurelien Jacobs (aurel AT gnuage DOT org).
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This allows this kind of subtitle to be displayed: \{Hello World\}
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Partially reverts 162a735b6b2dba13022f96db42a3f153cf28033e.
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Extend the charmap selection heuristics to select the first Windows
charmap if no Unicode charmap is found.
Fixes one particular font, FGP楷書体NT-M, and possibly others.
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Store the real font face id instead of using 0 all the time and use the
real font face id for font lookup as well. This makes font attachments
with multiple faces work correctly.
Thanks to ubitux and uau!
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Might save a few cycles.
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GDI does not use vertical writing for glyphs below a certain unicode
codepoint.
To make this work correctly, refactor glyph transformations a bit.
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Calculate ascender for rotated glyphs from the maximum advance width.
Works OK usually, but screws up with fonts that miss this information.
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Do not skip '@' at the start of a font name in styles; detect '@' at
font name start and set a new attribute in ASS_Font accordingly.
Rotate affected glyphs after loading and calculate a suitable advance.
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Some (arguably) broken CJK fonts claim to have a fixed advance width,
but they actually use two different widths for half-width and full-width
characters. Even worse, some use proportional width.
This can cause problems under certain circumstances. A big project
(Cairo) uses a FreeType load flag to ignore the global advance width
for such fonts, so I assume it can be used safely. Let's do it just
like them.
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Oops, forgot this one. This is only important for building distfiles
though, so I won't bother with another release tag.
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Additionally match fonts via the fullname (or name for humans) and
prefer these matches. Previously, libass matched against the family name
only and this name can be completely different from the fullname (which
is used by VSFilter!).
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It isn't needlessly run every frame this way. Also it's cleaner.
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If an application wants to provide some sort of safeguard against
loading very big files (which can trash memory), it should do so by
itself.
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Lots of unnecessary calls to setup functions can be removed.
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