symbian-qemu-0.9.1-12/python-2.6.1/Modules/yuvconvert.c
author martin.trojer@nokia.com
Fri, 31 Jul 2009 15:01:17 +0100
changeset 1 2fb8b9db1c86
permissions -rw-r--r--
Initial QEMU (symbian-qemu-0.9.1-12) import
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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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   113
		in_even += w4_3;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   114
		in_odd += w4_3;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   115
		out_even += w8;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   116
		out_odd += w8;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   117
	}
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   118
}