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refactor(vips.h): watermark replicate

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This commit is contained in:
Tomas Aparicio 2015-04-11 12:58:15 +02:00
parent 51c320fab7
commit b065e902ed
2 changed files with 69 additions and 19 deletions
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31
image_test.go
View file

@ -134,6 +134,37 @@ func TestImageWatermark(t *testing.T) {
Write("fixtures/test_watermark_out.jpg", buf)
}
func TestImageWatermarkNoReplicate(t *testing.T) {
image := initImage("test.jpg")
_, err := image.Crop(800, 600, NORTH)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
buf, err := image.Watermark(Watermark{
Text: "Copy me if you can",
Opacity: 0.5,
Width: 200,
DPI: 100,
NoReplicate: true,
Background: Color{255, 255, 255},
})
if err != nil {
t.Error(err)
}
err = assertSize(buf, 800, 600)
if err != nil {
t.Error(err)
}
if DetermineImageType(buf) != JPEG {
t.Fatal("Image is not jpeg")
}
Write("fixtures/test_watermark_replicate_out.jpg", buf)
}
func TestImageZoom(t *testing.T) {
buf, err := initImage("test.jpg").Zoom(1)
if err != nil {

57
vips.h
View file

@ -168,13 +168,31 @@ vips_init_image(void *buf, size_t len, int imageType, VipsImage **out) {
return code;
};
int
vips_watermark_replicate(VipsImage *orig, VipsImage *in, VipsImage **out)
{
VipsImage *cache = vips_image_new();
if (
vips_replicate(in, &cache,
1 + orig->Xsize / in->Xsize,
1 + orig->Ysize / in->Ysize, NULL) ||
vips_crop(cache, out, 0, 0, orig->Xsize, orig->Ysize, NULL)
) {
g_object_unref(cache);
return 1;
}
return 0;
};
int
vips_watermark(VipsImage *in, VipsImage **out, watermarkTextOptions *to, watermarkOptions *o)
{
double ones[3] = { 1, 1, 1 };
VipsImage *base = vips_image_new();
VipsImage **t = (VipsImage **) vips_object_local_array(VIPS_OBJECT(base), 12);
VipsImage **t = (VipsImage **) vips_object_local_array(VIPS_OBJECT(base), 10);
t[0] = in;
// Make the mask.
@ -189,38 +207,39 @@ vips_watermark(VipsImage *in, VipsImage **out, watermarkTextOptions *to, waterma
vips_embed(t[3], &t[4], 100, 100, t[3]->Xsize + o->Margin, t[3]->Ysize + o->Margin, NULL)
) {
g_object_unref(base);
return (1);
return 1;
}
// Replicate if necessary
if (o->NoReplicate != 1 && (
vips_replicate(t[4], &t[5],
1 + t[0]->Xsize / t[4]->Xsize,
1 + t[0]->Ysize / t[4]->Ysize, NULL) ||
vips_crop(t[5], &t[6], 0, 0, t[0]->Xsize, t[0]->Ysize, NULL))
) {
g_object_unref(base);
return (1);
if (o->NoReplicate != 1) {
VipsImage *cache = vips_image_new();
if (vips_watermark_replicate(t[0], t[4], &cache)) {
g_object_unref(cache);
g_object_unref(base);
return 1;
}
g_object_unref(t[4]);
t[4] = cache;
}
// Make the constant image to paint the text with.
if (
vips_black(&t[7], 1, 1, NULL) ||
vips_linear( t[7], &t[8], ones, o->Background, 3, NULL) ||
vips_cast(t[8], &t[9], VIPS_FORMAT_UCHAR, NULL) ||
vips_copy(t[9], &t[10], "interpretation", t[0]->Type, NULL) ||
vips_embed(t[10], &t[11], 0, 0, t[0]->Xsize, t[0]->Ysize, "extend", VIPS_EXTEND_COPY, NULL)
vips_black(&t[5], 1, 1, NULL) ||
vips_linear(t[5], &t[6], ones, o->Background, 3, NULL) ||
vips_cast(t[6], &t[7], VIPS_FORMAT_UCHAR, NULL) ||
vips_copy(t[7], &t[8], "interpretation", t[0]->Type, NULL) ||
vips_embed(t[8], &t[9], 0, 0, t[0]->Xsize, t[0]->Ysize, "extend", VIPS_EXTEND_COPY, NULL)
) {
g_object_unref(base);
return (1);
return 1;
}
// Blend the mask and text and write to output.
if (vips_ifthenelse(t[6], t[11], t[0], out, "blend", TRUE, NULL)) {
if (vips_ifthenelse(t[4], t[9], t[0], out, "blend", TRUE, NULL)) {
g_object_unref(base);
return (1);
return 1;
}
g_object_unref(base);
return (0);
return 0;
};