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alphacolor: Simplify ARGB<->AYUV conversions by code generation macros

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Sebastian Dröge 2010-03-15 19:16:18 +01:00
parent 322a8f5e6d
commit d6379362e5
1 changed files with 42 additions and 79 deletions
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121
gst/alpha/gstalphacolor.c
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@ -182,45 +182,50 @@ gst_alpha_color_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
return TRUE; return TRUE;
} }
static void #define DEFINE_ARGB_AYUV_FUNCTIONS(name, A, R, G, B) \
transform_argb_ayuv (guint8 * data, gint size) static void \
{ transform_##name##_ayuv (guint8 * data, gint size) \
guint8 y, u, v; { \
guint8 y, u, v; \
while (size > 0) { \
y = data[0] * 0.299 + data[1] * 0.587 + data[2] * 0.114 + 0; while (size > 0) { \
u = data[0] * -0.169 + data[1] * -0.332 + data[2] * 0.500 + 128; y = data[R] * 0.299 + data[G] * 0.587 + data[B] * 0.114 + 0; \
v = data[0] * 0.500 + data[1] * -0.419 + data[2] * -0.0813 + 128; u = data[R] * -0.169 + data[G] * -0.332 + data[B] * 0.500 + 128; \
v = data[R] * 0.500 + data[R] * -0.419 + data[B] * -0.0813 + 128; \
data[0] = data[3]; \
data[1] = y; data[0] = data[A]; \
data[2] = u; data[1] = y; \
data[3] = v; data[2] = u; \
data[3] = v; \
data += 4; \
size -= 4; data += 4; \
} size -= 4; \
} \
} \
\
static void \
transform_ayuv_##name (guint8 * data, gint size) \
{ \
guint8 r, g, b; \
\
while (size > 0) { \
r = data[1] + (0.419 / 0.299) * (data[3] - 128); \
g = data[1] + (-0.114 / 0.331) * (data[2] - 128) + \
(-0.299 / 0.419) * (data[3] - 128); \
b = data[1] + (0.587 / 0.331) * (data[2] - 128); \
\
data[A] = data[0]; \
data[R] = r; \
data[G] = g; \
data[B] = b; \
\
data += 4; \
size -= 4; \
} \
} }
static void DEFINE_ARGB_AYUV_FUNCTIONS (argb, 0, 1, 2, 3);
transform_bgra_ayuv (guint8 * data, gint size) DEFINE_ARGB_AYUV_FUNCTIONS (bgra, 3, 2, 1, 0);
{
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 static void
transform_argb_bgra (guint8 * data, gint size) transform_argb_bgra (guint8 * data, gint size)
@ -242,48 +247,6 @@ transform_argb_bgra (guint8 * data, gint size)
} }
} }
static void
transform_ayuv_argb (guint8 * data, gint size)
{
guint8 r, g, b;
while (size > 0) {
r = data[1] + (0.419 / 0.299) * (data[3] - 128);
g = data[1] + (-0.114 / 0.331) * (data[2] - 128) +
(-0.299 / 0.419) * (data[3] - 128);
b = data[1] + (0.587 / 0.331) * (data[2] - 128);
data[0] = data[0];
data[1] = r;
data[2] = g;
data[3] = b;
data += 4;
size -= 4;
}
}
static void
transform_ayuv_bgra (guint8 * data, gint size)
{
guint8 r, g, b;
while (size > 0) {
r = data[1] + (0.419 / 0.299) * (data[3] - 128);
g = data[1] + (-0.114 / 0.331) * (data[2] - 128) +
(-0.299 / 0.419) * (data[3] - 128);
b = data[1] + (0.587 / 0.331) * (data[2] - 128);
data[3] = data[0];
data[2] = r;
data[1] = g;
data[0] = b;
data += 4;
size -= 4;
}
}
static GstFlowReturn static GstFlowReturn
gst_alpha_color_transform_ip (GstBaseTransform * btrans, GstBuffer * inbuf) gst_alpha_color_transform_ip (GstBaseTransform * btrans, GstBuffer * inbuf)
{ {