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gst/alpha/gstalphacolor.c: Add BGRA handling (#165736).

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Original commit message from CVS:
Reviewed by:  Ronald S. Bultje  <rbultje@ronald.bitfreak.net>
* gst/alpha/gstalphacolor.c: (gst_alpha_color_sink_link),
(transform_rgb), (transform_bgr), (gst_alpha_color_chain):
Add BGRA handling (#165736).
This commit is contained in:
Ronald S. Bultje 2005-02-08 11:02:58 +00:00
parent e23f9bb4e9
commit 883da03b7c
2 changed files with 46 additions and 4 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2005-02-08 Gergely Nagy <algernon@bonehunter.rulez.org>
Reviewed by: Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/alpha/gstalphacolor.c: (gst_alpha_color_sink_link),
(transform_rgb), (transform_bgr), (gst_alpha_color_chain):
Add BGRA handling (#165736).
2005-02-08 Francis Labonte <francis_labonte@hotmail.com>
Reviewed by: Ronald S. Bultje <rbultje@ronald.bitfreak.net>

42
gst/alpha/gstalphacolor.c
View file

@ -49,6 +49,7 @@ struct _GstAlphaColor
/* caps */
gint in_width, in_height;
gboolean in_rgba;
gint out_width, out_height;
};
@ -79,10 +80,10 @@ enum
};
static GstStaticPadTemplate gst_alpha_color_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBA)
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBA ";" GST_VIDEO_CAPS_BGRA)
);
static GstStaticPadTemplate gst_alpha_color_src_template =
@ -230,6 +231,7 @@ gst_alpha_color_sink_link (GstPad * pad, const GstCaps * caps)
GstStructure *structure;
gboolean ret;
gdouble fps;
gint red_mask;
alpha = GST_ALPHA_COLOR (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
@ -237,10 +239,19 @@ gst_alpha_color_sink_link (GstPad * pad, const GstCaps * caps)
ret = gst_structure_get_int (structure, "width", &alpha->in_width);
ret &= gst_structure_get_int (structure, "height", &alpha->in_height);
ret &= gst_structure_get_double (structure, "framerate", &fps);
ret &= gst_structure_get_int (structure, "red_mask", &red_mask);
if (!ret)
return GST_PAD_LINK_REFUSED;
alpha->in_rgba = TRUE;
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
if (red_mask != 0x000000ff)
#else
if (red_mask != 0x00ff0000)
#endif
alpha->in_rgba = FALSE;
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_STR_FOURCC ("AYUV"),
"framerate", G_TYPE_DOUBLE, fps,
@ -251,7 +262,7 @@ gst_alpha_color_sink_link (GstPad * pad, const GstCaps * caps)
}
static void
transform (guint8 * data, gint size)
transform_rgb (guint8 * data, gint size)
{
guint8 y, u, v;
@ -270,6 +281,26 @@ transform (guint8 * data, gint size)
}
}
static void
transform_bgr (guint8 * data, gint size)
{
guint8 y, u, v;
while (size > 0) {
y = data[2] * 0.299 + data[1] * 0.587 + data[0] * 0.114 + 0;
u = data[2] * -0.169 + data[1] * -0.332 + data[0] * 0.500 + 128;
v = data[2] * 0.500 + data[1] * -0.419 + data[0] * -0.0813 + 128;
data[0] = data[3];
data[1] = y;
data[2] = u;
data[3] = v;
data += 4;
size -= 4;
}
}
static void
gst_alpha_color_chain (GstPad * pad, GstData * _data)
{
@ -298,7 +329,10 @@ gst_alpha_color_chain (GstPad * pad, GstData * _data)
outbuf = gst_buffer_copy_on_write (buffer);
transform (GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
if (alpha->in_rgba)
transform_rgb (GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
else
transform_bgr (GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
gst_pad_push (alpha->srcpad, GST_DATA (outbuf));
}