Added conversion routines to sv module.
diff --git a/Modules/yuvconvert.c b/Modules/yuvconvert.c
new file mode 100644
index 0000000..1b0ea63
--- /dev/null
+++ b/Modules/yuvconvert.c
@@ -0,0 +1,117 @@
+#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;
+ }
+}