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128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
/***********************************************************
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Copyright (c) 2000, BeOpen.com.
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Copyright (c) 1995-2000, Corporation for National Research Initiatives.
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Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
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All rights reserved.
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See the file "Misc/COPYRIGHT" for information on usage and
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redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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******************************************************************/
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#include "yuv.h"
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void
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yuv_sv411_to_cl422dc(int invert, void *data, void *yuv, int width, int height)
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{
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struct yuv411 *in = data;
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struct yuv422 *out_even = yuv;
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struct yuv422 *out_odd = out_even + width / 2;
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int i, j; /* counters */
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for (i = height / 2; i--; ) {
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for (j = width / 4; j--; ) {
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YUV422_Y0(*out_even) = YUV411_Y00(*in);
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YUV422_U0(*out_even) = YUV411_U00(*in);
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YUV422_V0(*out_even) = YUV411_V00(*in);
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YUV422_Y1(*out_even) = YUV411_Y01(*in);
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out_even++;
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YUV422_Y0(*out_even) = YUV411_Y02(*in);
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YUV422_U0(*out_even) = YUV411_U02(*in);
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YUV422_V0(*out_even) = YUV411_V02(*in);
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YUV422_Y1(*out_even) = YUV411_Y03(*in);
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out_even++;
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YUV422_Y0(*out_odd) = YUV411_Y10(*in);
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YUV422_U0(*out_odd) = YUV411_U10(*in);
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YUV422_V0(*out_odd) = YUV411_V10(*in);
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YUV422_Y1(*out_odd) = YUV411_Y11(*in);
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out_odd++;
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YUV422_Y0(*out_odd) = YUV411_Y12(*in);
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YUV422_U0(*out_odd) = YUV411_U12(*in);
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YUV422_V0(*out_odd) = YUV411_V12(*in);
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YUV422_Y1(*out_odd) = YUV411_Y13(*in);
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out_odd++;
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in++;
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}
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out_even += width / 2;
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out_odd += width / 2;
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}
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}
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void
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yuv_sv411_to_cl422dc_quartersize(int invert, void *data, void *yuv,
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int width, int height)
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{
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int w4 = width / 4; /* quarter of width is used often */
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struct yuv411 *in_even = data;
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struct yuv411 *in_odd = in_even + w4;
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struct yuv422 *out_even = yuv;
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struct yuv422 *out_odd = out_even + w4;
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int i, j; /* counters */
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int u, v; /* U and V values */
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for (i = height / 4; i--; ) {
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for (j = w4; j--; ) {
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u = YUV411_U00(*in_even);
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v = YUV411_V00(*in_even);
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YUV422_Y0(*out_even) = YUV411_Y00(*in_even);
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YUV422_U0(*out_even) = u;
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YUV422_V0(*out_even) = v;
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YUV422_Y1(*out_even) = YUV411_Y02(*in_even);
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YUV422_Y0(*out_odd) = YUV411_Y10(*in_odd);
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YUV422_U0(*out_odd) = u;
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YUV422_V0(*out_odd) = v;
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YUV422_Y1(*out_odd) = YUV411_Y12(*in_odd);
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in_even++;
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in_odd++;
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out_even++;
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out_odd++;
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}
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in_even += w4;
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in_odd += w4;
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out_even += w4;
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out_odd += w4;
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}
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}
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void
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yuv_sv411_to_cl422dc_sixteenthsize(int invert, void *data, void *yuv,
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int width, int height)
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{
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int w4_3 = 3 * width / 4; /* three quarters of width is used often */
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int w8 = width / 8; /* and so is one eighth */
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struct yuv411 *in_even = data;
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struct yuv411 *in_odd = in_even + width / 2;
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struct yuv422 *out_even = yuv;
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struct yuv422 *out_odd = out_even + w8;
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int i, j; /* counters */
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int u, v; /* U and V values */
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for (i = height / 8; i--; ) {
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for (j = w8; j--; ) {
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u = YUV411_U00(in_even[0]);
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v = YUV411_V00(in_even[0]);
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YUV422_Y0(*out_even) = YUV411_Y00(in_even[0]);
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YUV422_U0(*out_even) = u;
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YUV422_V0(*out_even) = v;
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YUV422_Y1(*out_even) = YUV411_Y00(in_even[1]);
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YUV422_Y0(*out_odd) = YUV411_Y00(in_odd[0]);
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YUV422_U0(*out_odd) = u;
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YUV422_V0(*out_odd) = v;
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YUV422_Y1(*out_odd) = YUV411_Y00(in_even[1]);
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in_even += 2;
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in_odd += 2;
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out_even++;
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out_odd++;
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}
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in_even += w4_3;
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in_odd += w4_3;
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out_even += w8;
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out_odd += w8;
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}
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}
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