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spectrascope: use add_pixel for non-white pixels

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=651536
This commit is contained in:
Stefan Kost 2011-05-30 23:45:17 +03:00
parent b4afe9f690
commit 7cee23a419
1 changed files with 25 additions and 1 deletions
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26
gst/scopes/gstspectrascope.c
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@ -134,6 +134,30 @@ gst_spectra_scope_setup (GstBaseScope * bscope)
return TRUE; return TRUE;
} }
static inline void
add_pixel (guint32 * _p, guint32 _c)
{
guint8 *p = (guint8 *) _p;
guint8 *c = (guint8 *) & _c;
if (p[0] < 255 - c[0])
p[0] += c[0];
else
p[0] = 255;
if (p[1] < 255 - c[1])
p[1] += c[1];
else
p[1] = 255;
if (p[2] < 255 - c[2])
p[2] += c[2];
else
p[2] = 255;
if (p[3] < 255 - c[3])
p[3] += c[3];
else
p[3] = 255;
}
static gboolean static gboolean
gst_spectra_scope_render (GstBaseScope * bscope, GstBuffer * audio, gst_spectra_scope_render (GstBaseScope * bscope, GstBuffer * audio,
GstBuffer * video) GstBuffer * video)
@ -180,7 +204,7 @@ gst_spectra_scope_render (GstBaseScope * bscope, GstBuffer * audio,
vdata[off] = 0x00FFFFFF; vdata[off] = 0x00FFFFFF;
for (l = y + 1; l <= h; l++) { for (l = y + 1; l <= h; l++) {
off += w; off += w;
vdata[off] = 0x007F7F7F; add_pixel (&vdata[off], 0x007F7F7F);
} }
} }
return TRUE; return TRUE;