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Add a mechanism for getting a color converter function. Implement
the 'convert a single color' call in terms of that. 'Bulk' users
can then repeatedly call the single function.
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Previously these were only used for shadings in test builds.
By the same argument that they are applied for shadings, it
can be argued that they ought to be applied everywhere trig
functions are used.
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Currently, the mupdf code loads shadings at parse time, and
instantly decomposes them into a mesh of triangles. This mesh
of triangles is the transformed and rendered as required.
Unfortunately the storage space for the mesh is typically much
greater than the original representation.
In this commit, we move the shading stream parsing/decomposition
code into a general 'fz_process_mesh' function within res_shade.
We then grab a copy of the buffer at load time, and 'process'
(decompose/paint) at render time.
For the test file on the bug, memory falls from the reported 660Mb
to 30Mb. For another test file (txt9780547775815_ingested.pdf
page 271) it reduces memory use from 750Meg to 33Meg. These figures
could be further reduced by storing the compressed streams from the
pdf file rather than the uncompressed ones.
Incorporating typo fix and unused function removal from Sebras. Thanks.
Remove unused function in shading code
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When we allocate a pixmap > 2G, but < 4G, the index into that
pixmap, when calculated as an int can be negative. Fix this with
various casts to unsigned int.
If we ever move to support >4G images we'll need to rejig the
casting to cast each part of the element to ptrdiff_t first.
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If this is defined during building, we use our own sinf/cosf/atan2f
functions during shading. This is set automatically if CLUSTER is defined
too, so this should remove the cross-platform differences seen during
cluster rendering.
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Debug printing functions: debug -> print.
Accessors: get noun attribute -> noun attribute.
Find -> lookup when the returned value is not reference counted.
pixmap_with_rect -> pixmap_with_bbox.
We are reserving the word "find" to mean lookups that give ownership
of objects to the caller. Lookup is used in other places where the
ownership is not transferred, or simple values are returned.
The rename is done by the sed script in scripts/rename3.sed
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C's standard is copy(dst, src), so we move to adopt that here.
Hopefully no one is calling this routine other than us - if they are,
then I apologise! Better to aim for consistency before we freeze
the API at v1.0 than to carry an inconsistent API around ever after.
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Attempt to separate public API from internal functions.
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Huge pervasive change to lots of files, adding a context for exception
handling and allocation.
In time we'll move more statics into there.
Also fix some for(i = 0; i < function(...); i++) calls.
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Also put the function on the same line for inline functions, so
they stick out and are easy to find with grep.
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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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