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| author | Sebastian Dröge <sebastian.droege@collabora.co.uk> | 2009-05-29 21:07:26 +0200 |
|---|---|---|
| committer | Sebastian Dröge <sebastian.droege@collabora.co.uk> | 2009-05-29 21:07:26 +0200 |
| commit | 01b8bacd1b1d1c0793db475fb593cb705143e981 (patch) | |
| tree | 90f6aeb8bd428923772fa2f11235b33752f0ca5d /gst | |
| parent | 332dae71981747841370a239b3b557d5ecb1afb9 (diff) | |
| download | gst-plugins-bad-01b8bacd1b1d1c0793db475fb593cb705143e981.tar.gz gst-plugins-bad-01b8bacd1b1d1c0793db475fb593cb705143e981.tar.bz2 gst-plugins-bad-01b8bacd1b1d1c0793db475fb593cb705143e981.zip | |
shapewipe: Adjust border to still have everything transparent at 1.0 and the other way around
Diffstat (limited to 'gst')
| -rw-r--r-- | gst/shapewipe/gstshapewipe.c | 40 |
1 files changed, 30 insertions, 10 deletions
diff --git a/gst/shapewipe/gstshapewipe.c b/gst/shapewipe/gstshapewipe.c index 69155990..ec33f0a7 100644 --- a/gst/shapewipe/gstshapewipe.c +++ b/gst/shapewipe/gstshapewipe.c @@ -556,14 +556,24 @@ gst_shape_wipe_blend_16 (GstShapeWipe * self, GstBuffer * inbuf, guint i, j; guint mask_increment = GST_ROUND_UP_2 (self->width) - self->width; gfloat position = self->mask_position; - gfloat low = MAX (0.0, position - (self->mask_border / 2.0)); - gfloat high = MIN (1.0, position + (self->mask_border / 2.0)); + gfloat low = position - (self->mask_border / 2.0f); + gfloat high = position + (self->mask_border / 2.0f); + + if (low < 0.0f) { + high = 0.0f; + low = 0.0f; + } + + if (high > 1.0f) { + low = 1.0f; + high = 1.0f; + } for (i = 0; i < self->height; i++) { for (j = 0; j < self->width; j++) { - gfloat in = *mask / 65535.0; + gfloat in = *mask / 65535.0f; - if (in <= low) { + if (in < low) { output[0] = 0x00; /* A */ output[1] = 0x00; /* Y */ output[2] = 0x80; /* U */ @@ -574,7 +584,7 @@ gst_shape_wipe_blend_16 (GstShapeWipe * self, GstBuffer * inbuf, output[2] = input[2]; /* U */ output[3] = input[3]; /* V */ } else { - gfloat val = 255 * ((in - low) / (high - low)); + gfloat val = 255.0f * ((in - low) / (high - low)); output[0] = CLAMP (val, 0, 255); /* A */ output[1] = input[1]; /* Y */ @@ -602,14 +612,24 @@ gst_shape_wipe_blend_8 (GstShapeWipe * self, GstBuffer * inbuf, guint i, j; guint mask_increment = GST_ROUND_UP_4 (self->width) - self->width; gfloat position = self->mask_position; - gfloat low = MAX (0.0, position - (self->mask_border / 2.0)); - gfloat high = MIN (1.0, position + (self->mask_border / 2.0)); + gfloat low = position - (self->mask_border / 2.0f); + gfloat high = position + (self->mask_border / 2.0f); + + if (low < 0.0f) { + high = 0.0f; + low = 0.0f; + } + + if (high > 1.0f) { + low = 1.0f; + high = 1.0f; + } for (i = 0; i < self->height; i++) { for (j = 0; j < self->width; j++) { - gfloat in = *mask / 255.0; + gfloat in = *mask / 255.0f; - if (in <= low) { + if (in < low) { output[0] = 0x00; /* A */ output[1] = 0x00; /* Y */ output[2] = 0x80; /* U */ @@ -620,7 +640,7 @@ gst_shape_wipe_blend_8 (GstShapeWipe * self, GstBuffer * inbuf, output[2] = input[2]; /* U */ output[3] = input[3]; /* V */ } else { - gfloat val = 255 * ((in - low) / (high - low)); + gfloat val = 255.0f * ((in - low) / (high - low)); output[0] = CLAMP (val, 0, 255); /* A */ output[1] = input[1]; /* Y */ |