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| author | Tor Andersson <tor@ghostscript.com> | 2004-11-11 07:15:07 +0100 |
|---|---|---|
| committer | Tor Andersson <tor@ghostscript.com> | 2004-11-11 07:15:07 +0100 |
| commit | 58de1fff510078e3d2d8cfce033c87299adf78f0 (patch) | |
| tree | 80635049b0d1ccc8840717982afe983ea18c0b37 /filter/filter.c | |
| parent | 2ec725624d637789845478a90f799e9eeb54f9ee (diff) | |
| download | mupdf-58de1fff510078e3d2d8cfce033c87299adf78f0.tar.xz | |
filter reference counting
Diffstat (limited to 'filter/filter.c')
| -rw-r--r-- | filter/filter.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/filter/filter.c b/filter/filter.c index 25bbd441..4bd8c4ff 100644 --- a/filter/filter.c +++ b/filter/filter.c @@ -1,8 +1,8 @@ #include <fitz.h> -fz_error fz_kioneedin = { "<ioneedin>", "<process>", "filter.c", 0, 1 }; -fz_error fz_kioneedout = { "<ioneedout>", "<process>", "filter.c", 0, 1 }; -fz_error fz_kiodone = { "<iodone>", "<process>", "filter.c", 0, 1 }; +fz_error fz_kioneedin = { -1, "<ioneedin>", "<process>", "filter.c", 0 }; +fz_error fz_kioneedout = { -1, "<ioneedout>", "<process>", "filter.c", 0 }; +fz_error fz_kiodone = { -1, "<iodone>", "<process>", "filter.c", 0 }; fz_error * fz_process(fz_filter *f, fz_buffer *in, fz_buffer *out) @@ -31,11 +31,21 @@ fz_process(fz_filter *f, fz_buffer *in, fz_buffer *out) return reason; } +fz_filter * +fz_keepfilter(fz_filter *f) +{ + f->nrefs ++; + return f; +} + void fz_dropfilter(fz_filter *f) { - if (f->drop) - f->drop(f); - fz_free(f); + if (--f->nrefs == 0) + { + if (f->drop) + f->drop(f); + fz_free(f); + } } |