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435a566751
* sumatrapdf - vendor import * everything compiles (libjpeg, poppler, fitz, sumatrapdf) * does NOT link (remove the comment tags in the parent directory.rbuild file (rosapps dir) to build it) svn path=/trunk/; revision=29295
54 lines
871 B
C
54 lines
871 B
C
#include "fitz-base.h"
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#include "fitz-stream.h"
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typedef struct fz_nullfilter_s fz_nullfilter;
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struct fz_nullfilter_s
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{
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fz_filter super;
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int len;
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int cur;
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};
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fz_error *
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fz_newnullfilter(fz_filter **fp, int len)
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{
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FZ_NEWFILTER(fz_nullfilter, f, nullfilter);
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f->len = len;
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f->cur = 0;
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return nil;
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}
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void
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fz_dropnullfilter(fz_filter *f)
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{
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}
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fz_error *
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fz_processnullfilter(fz_filter *filter, fz_buffer *in, fz_buffer *out)
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{
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fz_nullfilter *f = (fz_nullfilter*)filter;
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int n;
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n = MIN(in->wp - in->rp, out->ep - out->wp);
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if (f->len >= 0)
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n = MIN(n, f->len - f->cur);
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if (n) {
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memcpy(out->wp, in->rp, n);
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in->rp += n;
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out->wp += n;
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f->cur += n;
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}
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if (f->cur == f->len)
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return fz_iodone;
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if (in->rp == in->wp)
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return fz_ioneedin;
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if (out->wp == out->ep)
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return fz_ioneedout;
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return fz_throw("braindead programmer in nullfilter");
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}
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