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Add generic functions for copying packed/planar XV data, copied from 

mach64.
This commit is contained in:
Eric Anholt 2004-05-13 22:57:15 +00:00
parent 2e330e980f
commit 40354e7618
2 changed files with 153 additions and 1 deletions
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142
hw/kdrive/src/kxv.c
View File

@ -56,6 +56,7 @@ of the copyright holder.
#include <X11/extensions/Xvproto.h>
#include "kxv.h"
#include "fourcc.h"
/* XvScreenRec fields */
@ -1777,3 +1778,144 @@ KdXVQueryOffscreenImages(
*num = OffscreenImages[pScreen->myNum].num;
return OffscreenImages[pScreen->myNum].images;
}
/**************** Common video manipulation functions *******************/
void
KdXVCopyPackedData(KdScreenInfo *screen, CARD8 *src, CARD8 *dst, int randr,
int srcPitch, int dstPitch, int srcW, int srcH, int top, int left,
int h, int w)
{
int srcDown = srcPitch, srcRight = 2, srcNext;
int p;
switch (randr & RR_Rotate_All) {
case RR_Rotate_0:
srcDown = srcPitch;
srcRight = 2;
break;
case RR_Rotate_90:
src += (srcH - 1) * 2;
srcDown = -2;
srcRight = srcPitch;
break;
case RR_Rotate_180:
src += srcPitch * (srcH - 1) + (srcW - 1) * 2;
srcDown = -srcPitch;
srcRight = -2;
break;
case RR_Rotate_270:
src += srcPitch * (srcW - 1);
srcDown = 2;
srcRight = -srcPitch;
break;
}
src = src + top * srcDown + left * srcRight;
w >>= 1;
srcRight >>= 1;
srcNext = srcRight >> 1;
while (h--) {
CARD16 *s = (CARD16 *)src;
CARD32 *d = (CARD32 *)dst;
p = w;
while (p--) {
*d++ = s[0] | (s[srcNext] << 16);
s += srcRight;
}
src += srcPitch;
dst += dstPitch;
}
}
void
KdXVCopyPlanarData(KdScreenInfo *screen, CARD8 *src, CARD8 *dst, int randr,
int srcPitch, int srcPitch2, int dstPitch, int srcW, int srcH, int height,
int top, int left, int h, int w, int id)
{
int i, j;
CARD8 *src1, *src2, *src3, *dst1;
int srcDown = srcPitch, srcDown2 = srcPitch2;
int srcRight = 2, srcRight2 = 1, srcNext = 1;
/* compute source data pointers */
src1 = src;
src2 = src1 + height * srcPitch;
src3 = src2 + (height >> 1) * srcPitch2;
switch (randr & RR_Rotate_All) {
case RR_Rotate_0:
srcDown = srcPitch;
srcDown2 = srcPitch2;
srcRight = 2;
srcRight2 = 1;
srcNext = 1;
break;
case RR_Rotate_90:
src1 = src1 + srcH - 1;
src2 = src2 + (srcH >> 1) - 1;
src3 = src3 + (srcH >> 1) - 1;
srcDown = -1;
srcDown2 = -1;
srcRight = srcPitch * 2;
srcRight2 = srcPitch2;
srcNext = srcPitch;
break;
case RR_Rotate_180:
src1 = src1 + srcPitch * (srcH - 1) + (srcW - 1);
src2 = src2 + srcPitch2 * ((srcH >> 1) - 1) + ((srcW >> 1) - 1);
src3 = src3 + srcPitch2 * ((srcH >> 1) - 1) + ((srcW >> 1) - 1);
srcDown = -srcPitch;
srcDown2 = -srcPitch2;
srcRight = -2;
srcRight2 = -1;
srcNext = -1;
break;
case RR_Rotate_270:
src1 = src1 + srcPitch * (srcW - 1);
src2 = src2 + srcPitch2 * ((srcW >> 1) - 1);
src3 = src3 + srcPitch2 * ((srcW >> 1) - 1);
srcDown = 1;
srcDown2 = 1;
srcRight = -srcPitch * 2;
srcRight2 = -srcPitch2;
srcNext = -srcPitch;
break;
}
/* adjust for origin */
src1 += top * srcDown + left * srcNext;
src2 += (top >> 1) * srcDown2 + (left >> 1) * srcRight2;
src3 += (top >> 1) * srcDown2 + (left >> 1) * srcRight2;
if (id == FOURCC_I420) {
CARD8 *srct = src2;
src2 = src3;
src3 = srct;
}
dst1 = dst;
w >>= 1;
for (j = 0; j < h; j++) {
CARD32 *dst = (CARD32 *)dst1;
CARD8 *s1l = src1;
CARD8 *s1r = src1 + srcNext;
CARD8 *s2 = src2;
CARD8 *s3 = src3;
for (i = 0; i < w; i++) {
*dst++ = *s1l | (*s1r << 16) | (*s3 << 8) | (*s2 << 24);
s1l += srcRight;
s1r += srcRight;
s2 += srcRight2;
s3 += srcRight2;
}
src1 += srcDown;
dst1 += dstPitch;
if (j & 1) {
src2 += srcDown2;
src3 += srcDown2;
}
}
}

12
hw/kdrive/src/kxv.h
View File

@ -245,7 +245,17 @@ KdXVQueryOffscreenImages(
ScreenPtr pScreen,
int *num
);
void
KdXVCopyPackedData(KdScreenInfo *screen, CARD8 *src, CARD8 *dst, int randr,
int srcPitch, int dstPitch, int srcW, int srcH, int top, int left,
int h, int w);
void
KdXVCopyPlanarData(KdScreenInfo *screen, CARD8 *src, CARD8 *dst, int randr,
int srcPitch, int srcPitch2, int dstPitch, int srcW, int srcH, int height,
int top, int left, int h, int w, int id);
KdVideoAdaptorPtr KdXVAllocateVideoAdaptorRec(KdScreenInfo * screen);
void KdXVFreeVideoAdaptorRec(KdVideoAdaptorPtr ptr);