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| author | Tor Andersson <tor.andersson@artifex.com> | 2018-06-25 13:15:50 +0200 |
|---|---|---|
| committer | Tor Andersson <tor.andersson@artifex.com> | 2018-07-05 15:32:34 +0200 |
| commit | 4a99615a609eec2b84bb2341d74fac46a5998137 (patch) | |
| tree | 486eacff07448e4c655df1fa1bcb20df709dd8df /source/fitz/colorspace.c | |
| parent | 2aa62902447760764e7a763dea322145d9c4808c (diff) | |
| download | mupdf-4a99615a609eec2b84bb2341d74fac46a5998137.tar.xz | |
Pass rect and matrix by value in geometry functions.
Several things irk me about passing values as const pointers:
* They can be NULL, which is not a valid value.
* They require explicit temporary variables for storage.
* They don't compose easily in a legible manner, requiring
weird pointer passing semantics where the variable being assigned
is hidden as an argument in the innermost function call.
* We can't change the value through the pointer, requiring yet more
local variables to hold copies of the input value.
In the device interface where we pass a matrix to a function, we often
find ourselves making a local copy of the matrix so we can concatenate
other transforms to it. This copying is a lot of unnecessary busywork
that I hope to eventually avoid by laying the groundwork with this
commit.
This is a rather large API change, so I apologize for the inconvenience,
but I hope the end result and gain in legibility will be worth the pain.
Diffstat (limited to 'source/fitz/colorspace.c')
| -rw-r--r-- | source/fitz/colorspace.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/source/fitz/colorspace.c b/source/fitz/colorspace.c index 4cfeeb3e..54435743 100644 --- a/source/fitz/colorspace.c +++ b/source/fitz/colorspace.c @@ -2810,7 +2810,6 @@ icc_base_conv_pixmap(fz_context *ctx, fz_pixmap *dst, fz_pixmap *src, fz_colorsp int i, j; unsigned char *inputpos, *outputpos; fz_pixmap *base; - fz_irect bbox; int h, len; float src_f[FZ_MAX_COLORS], des_f[FZ_MAX_COLORS]; int sn = src->n; @@ -2819,7 +2818,7 @@ icc_base_conv_pixmap(fz_context *ctx, fz_pixmap *dst, fz_pixmap *src, fz_colorsp int stride_base; int bn, bc; - base = fz_new_pixmap_with_bbox(ctx, base_cs, fz_pixmap_bbox(ctx, src, &bbox), src->seps, src->alpha); + base = fz_new_pixmap_with_bbox(ctx, base_cs, fz_pixmap_bbox(ctx, src), src->seps, src->alpha); bn = base->n; bc = base->n - base->alpha - base->s; stride_base = base->stride - base->w * bn; @@ -3563,7 +3562,6 @@ fz_expand_indexed_pixmap(fz_context *ctx, const fz_pixmap *src, int alpha) unsigned char *d; int y, x, k, n, high; unsigned char *lookup; - fz_irect bbox; int s_line_inc, d_line_inc; assert(src->colorspace->to_ccs == indexed_to_rgb || src->colorspace->to_ccs == indexed_to_alt); @@ -3574,7 +3572,7 @@ fz_expand_indexed_pixmap(fz_context *ctx, const fz_pixmap *src, int alpha) lookup = idx->lookup; n = idx->base->n; - dst = fz_new_pixmap_with_bbox(ctx, idx->base, fz_pixmap_bbox(ctx, src, &bbox), src->seps, alpha); + dst = fz_new_pixmap_with_bbox(ctx, idx->base, fz_pixmap_bbox(ctx, src), src->seps, alpha); s = src->samples; d = dst->samples; s_line_inc = src->stride - src->w * src->n; |