diff options
| -rw-r--r-- | pdf/pdf_function.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/pdf/pdf_function.c b/pdf/pdf_function.c index a0d0336b..202ea822 100644 --- a/pdf/pdf_function.c +++ b/pdf/pdf_function.c @@ -1466,20 +1466,27 @@ pdf_load_function(pdf_document *xref, pdf_obj *dict, int in, int out) } void -pdf_eval_function(fz_context *ctx, pdf_function *func, float *in, int inlen, float *out, int outlen) +pdf_eval_function(fz_context *ctx, pdf_function *func, float *in_, int inlen, float *out_, int outlen) { - memset(out, 0, sizeof(float) * outlen); + float fakein[MAXN]; + float fakeout[MAXN]; + float *in = in_; + float *out = out_; - if (inlen != func->m) + if (inlen < func->m) { - fz_warn(ctx, "tried to evaluate function with wrong number of inputs"); - return; + in = fakein; + memset(in, 0, sizeof(float) * func->m); + memcpy(in, in_, sizeof(float) * inlen); } - if (func->n != outlen) + + if (outlen < func->n) { - fz_warn(ctx, "tried to evaluate function with wrong number of outputs"); - return; + out = fakeout; + memset(out, 0, sizeof(float) * func->n); } + else + memset(out, 0, sizeof(float) * outlen); switch(func->type) { @@ -1488,6 +1495,9 @@ pdf_eval_function(fz_context *ctx, pdf_function *func, float *in, int inlen, flo case STITCHING: eval_stitching_func(ctx, func, *in, out); break; case POSTSCRIPT: eval_postscript_func(ctx, func, in, out); break; } + + if (outlen < func->n) + memcpy(out_, out, sizeof(float) * outlen); } /* |