Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 74f4bd53e03ded8408bcc2de67cf0f5a4ac5b1a1 authored by Barry Warsaw on 23 February 2012, 15:59:38 UTC
Bump some more copyright years (as per PEP 101), since this is the first
Bump some more copyright years (as per PEP 101), since this is the first
Tip revision: 74f4bd5
yuvconvert.c
#include "yuv.h"
void
yuv_sv411_to_cl422dc(int invert, void *data, void *yuv, int width, int height)
{
struct yuv411 *in = data;
struct yuv422 *out_even = yuv;
struct yuv422 *out_odd = out_even + width / 2;
int i, j; /* counters */
for (i = height / 2; i--; ) {
for (j = width / 4; j--; ) {
YUV422_Y0(*out_even) = YUV411_Y00(*in);
YUV422_U0(*out_even) = YUV411_U00(*in);
YUV422_V0(*out_even) = YUV411_V00(*in);
YUV422_Y1(*out_even) = YUV411_Y01(*in);
out_even++;
YUV422_Y0(*out_even) = YUV411_Y02(*in);
YUV422_U0(*out_even) = YUV411_U02(*in);
YUV422_V0(*out_even) = YUV411_V02(*in);
YUV422_Y1(*out_even) = YUV411_Y03(*in);
out_even++;
YUV422_Y0(*out_odd) = YUV411_Y10(*in);
YUV422_U0(*out_odd) = YUV411_U10(*in);
YUV422_V0(*out_odd) = YUV411_V10(*in);
YUV422_Y1(*out_odd) = YUV411_Y11(*in);
out_odd++;
YUV422_Y0(*out_odd) = YUV411_Y12(*in);
YUV422_U0(*out_odd) = YUV411_U12(*in);
YUV422_V0(*out_odd) = YUV411_V12(*in);
YUV422_Y1(*out_odd) = YUV411_Y13(*in);
out_odd++;
in++;
}
out_even += width / 2;
out_odd += width / 2;
}
}
void
yuv_sv411_to_cl422dc_quartersize(int invert, void *data, void *yuv,
int width, int height)
{
int w4 = width / 4; /* quarter of width is used often */
struct yuv411 *in_even = data;
struct yuv411 *in_odd = in_even + w4;
struct yuv422 *out_even = yuv;
struct yuv422 *out_odd = out_even + w4;
int i, j; /* counters */
int u, v; /* U and V values */
for (i = height / 4; i--; ) {
for (j = w4; j--; ) {
u = YUV411_U00(*in_even);
v = YUV411_V00(*in_even);
YUV422_Y0(*out_even) = YUV411_Y00(*in_even);
YUV422_U0(*out_even) = u;
YUV422_V0(*out_even) = v;
YUV422_Y1(*out_even) = YUV411_Y02(*in_even);
YUV422_Y0(*out_odd) = YUV411_Y10(*in_odd);
YUV422_U0(*out_odd) = u;
YUV422_V0(*out_odd) = v;
YUV422_Y1(*out_odd) = YUV411_Y12(*in_odd);
in_even++;
in_odd++;
out_even++;
out_odd++;
}
in_even += w4;
in_odd += w4;
out_even += w4;
out_odd += w4;
}
}
void
yuv_sv411_to_cl422dc_sixteenthsize(int invert, void *data, void *yuv,
int width, int height)
{
int w4_3 = 3 * width / 4; /* three quarters of width is used often */
int w8 = width / 8; /* and so is one eighth */
struct yuv411 *in_even = data;
struct yuv411 *in_odd = in_even + width / 2;
struct yuv422 *out_even = yuv;
struct yuv422 *out_odd = out_even + w8;
int i, j; /* counters */
int u, v; /* U and V values */
for (i = height / 8; i--; ) {
for (j = w8; j--; ) {
u = YUV411_U00(in_even[0]);
v = YUV411_V00(in_even[0]);
YUV422_Y0(*out_even) = YUV411_Y00(in_even[0]);
YUV422_U0(*out_even) = u;
YUV422_V0(*out_even) = v;
YUV422_Y1(*out_even) = YUV411_Y00(in_even[1]);
YUV422_Y0(*out_odd) = YUV411_Y00(in_odd[0]);
YUV422_U0(*out_odd) = u;
YUV422_V0(*out_odd) = v;
YUV422_Y1(*out_odd) = YUV411_Y00(in_even[1]);
in_even += 2;
in_odd += 2;
out_even++;
out_odd++;
}
in_even += w4_3;
in_odd += w4_3;
out_even += w8;
out_odd += w8;
}
}