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* 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
95 lines
1.4 KiB
C
95 lines
1.4 KiB
C
#include "fitz-base.h"
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#include "fitz-stream.h"
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fz_error *
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fz_newbuffer(fz_buffer **bp, int size)
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{
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fz_buffer *b;
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b = *bp = fz_malloc(sizeof(fz_buffer));
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if (!b) return fz_outofmem;
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b->refs = 1;
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b->ownsdata = 1;
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b->bp = fz_malloc(size);
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if (!b->bp) { fz_free(b); return fz_outofmem; }
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b->rp = b->bp;
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b->wp = b->bp;
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b->ep = b->bp + size;
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b->eof = 0;
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return nil;
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}
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fz_error *
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fz_newbufferwithmemory(fz_buffer **bp, unsigned char *data, int size)
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{
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fz_buffer *b;
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b = *bp = fz_malloc(sizeof(fz_buffer));
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if (!b) return fz_outofmem;
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b->refs = 1;
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b->ownsdata = 0;
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b->bp = data;
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b->rp = b->bp;
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b->wp = b->bp + size;
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b->ep = b->bp + size;
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b->eof = 0;
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return nil;
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}
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fz_buffer *
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fz_keepbuffer(fz_buffer *buf)
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{
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buf->refs ++;
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return buf;
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}
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void
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fz_dropbuffer(fz_buffer *buf)
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{
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if (--buf->refs == 0)
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{
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if (buf->ownsdata)
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fz_free(buf->bp);
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fz_free(buf);
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}
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}
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fz_error *
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fz_growbuffer(fz_buffer *buf)
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{
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unsigned char *newbp;
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int rp = buf->rp - buf->bp;
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int wp = buf->wp - buf->bp;
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int ep = buf->ep - buf->bp;
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assert(buf->ownsdata);
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newbp = fz_realloc(buf->bp, ep * 2);
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if (!newbp) return fz_outofmem;
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buf->bp = newbp;
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buf->rp = buf->bp + rp;
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buf->wp = buf->bp + wp;
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buf->ep = buf->bp + ep * 2;
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return nil;
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}
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fz_error *
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fz_rewindbuffer(fz_buffer *buf)
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{
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assert(buf->ownsdata);
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memmove(buf->bp, buf->rp, buf->wp - buf->rp);
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buf->wp = buf->bp + (buf->wp - buf->rp);
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buf->rp = buf->bp;
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return nil;
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}
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