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#ifndef SOURCE_LOOKUP
#define SOURCE_LOOKUP(x) (x)
#define SOURCE_LOOKUP_AUTO
#endif
#ifndef SOURCE_TYPE
#define SOURCE_TYPE u32
#define SOURCE_TYPE_AUTO
#endif
/* stretch_hvx_up/down_32_KPI */( void *dst,
int dpitch,
const void *src,
int spitch,
int width,
int height,
int dst_width,
int dst_height,
const StretchCtx *ctx )
{
long x, y = 0;
long cw = ctx->clip.x2 - ctx->clip.x1 + 1;
long ch = ctx->clip.y2 - ctx->clip.y1 + 1;
long hfraq = ((long)(width - MINUS_1) << 18) / (long)(dst_width);
long vfraq = ((long)(height - MINUS_1) << 18) / (long)(dst_height);
long dp4 = dpitch / 4;
long point0 = POINT_0 + ctx->clip.x1 * hfraq;
long point = point0;
long line = LINE_0 + ctx->clip.y1 * vfraq;
long ratios[cw];
u32 *dst32;
#if defined (COLOR_KEY) || defined (KEY_PROTECT)
u32 dt;
#endif
u32 _lbT[cw+8];
u32 _lbB[cw+8];
u32 *lbX;
u32 *lbT = (u32*)((((unsigned long)(&_lbT[0])) + 31) & ~31);
u32 *lbB = (u32*)((((unsigned long)(&_lbB[0])) + 31) & ~31);
long lineT = -2000;
for (x=0; x<cw; x++) {
ratios[x] = POINT_TO_RATIO( point, hfraq );
point += hfraq;
}
HVX_DEBUG("%dx%d -> %dx%d (0x%x, 0x%x)\n", width, height, dst_width, dst_height, hfraq, vfraq );
dst = (void*)((char*) dst + ctx->clip.x1 * 4 + ctx->clip.y1 * dpitch);
dst32 = (u32*) dst;
/*
* Scale line by line.
*/
for (y=0; y<ch; y++) {
long X;
long nlT = LINE_T( line, vfraq );
D_ASSERT( nlT >= 0 );
D_ASSERT( nlT < height-1 );
/*
* Fill line buffer(s) ?
*/
if (nlT != lineT) {
u32 L, R;
const SOURCE_TYPE *srcT = (const SOURCE_TYPE *)((const char*) src + spitch * nlT);
const SOURCE_TYPE *srcB = (const SOURCE_TYPE *)((const char*) src + spitch * (nlT + 1));
long diff = nlT - lineT;
if (diff > 1) {
/*
* Horizontal interpolation
*/
for (x=0, point=point0; x<cw; x++, point += hfraq) {
long pl = POINT_L( point, hfraq );
HVX_DEBUG("%ld,%ld %lu (%lu/%lu) 0x%x 0x%x\n", x, y, pl,
POINT_L( point, hfraq ), POINT_R( point, hfraq ), point, ratios[r] );
D_ASSERT( pl >= 0 );
D_ASSERT( pl < width-1 );
L = SOURCE_LOOKUP(srcT[pl]);
R = SOURCE_LOOKUP(srcT[pl+1]);
lbT[x]= ((((((R & X_00FF00FF) - (L & X_00FF00FF))*ratios[x]) >> SHIFT_R8) + (L & X_00FF00FF)) & X_00FF00FF) +
((((((R>>SHIFT_R8) & X_00FF00FF) - ((L>>SHIFT_R8) & X_00FF00FF))*ratios[x]) + (L & X_FF00FF00)) & X_FF00FF00);
L = SOURCE_LOOKUP(srcB[pl]);
R = SOURCE_LOOKUP(srcB[pl+1]);
lbB[x] = ((((((R & X_00FF00FF) - (L & X_00FF00FF))*ratios[x]) >> SHIFT_R8) + (L & X_00FF00FF)) & X_00FF00FF) +
((((((R>>SHIFT_R8) & X_00FF00FF) - ((L>>SHIFT_R8) & X_00FF00FF))*ratios[x]) + (L & X_FF00FF00)) & X_FF00FF00);
}
}
else {
/* Swap */
lbX = lbT;
lbT = lbB;
lbB = lbX;
/*
* Horizontal interpolation
*/
for (x=0, point=point0; x<cw; x++, point += hfraq) {
long pl = POINT_L( point, hfraq );
HVX_DEBUG("%ld,%ld %lu (%lu/%lu) 0x%x 0x%x\n", x, y, pl,
POINT_L( point, hfraq ), POINT_R( point, hfraq ), point, ratios[r] );
D_ASSERT( pl >= 0 );
D_ASSERT( pl < width-1 );
L = SOURCE_LOOKUP(srcB[pl]);
R = SOURCE_LOOKUP(srcB[pl+1]);
lbB[x] = ((((((R & X_00FF00FF) - (L & X_00FF00FF))*ratios[x]) >> SHIFT_R8) + (L & X_00FF00FF)) & X_00FF00FF) +
((((((R>>SHIFT_R8) & X_00FF00FF) - ((L>>SHIFT_R8) & X_00FF00FF))*ratios[x]) + (L & X_FF00FF00)) & X_FF00FF00);
}
}
lineT = nlT;
}
/*
* Vertical interpolation
*/
X = LINE_TO_RATIO( line, vfraq );
for (x=0; x<cw; x++) {
#if defined (COLOR_KEY) || defined (KEY_PROTECT)
dt = ((((((lbB[x] & X_00FF00FF) - (lbT[x] & X_00FF00FF))*X) >> SHIFT_R8) + (lbT[x] & X_00FF00FF)) & X_00FF00FF) +
((((((lbB[x]>>SHIFT_R8) & X_00FF00FF) - ((lbT[x]>>SHIFT_R8) & X_00FF00FF))*X) + (lbT[x] & X_FF00FF00)) & X_FF00FF00);
#ifdef COLOR_KEY
if (dt != (COLOR_KEY))
#endif
#ifdef KEY_PROTECT
/* Write to destination with color key protection */
dst32[x] = ((dt & MASK_RGB) == KEY_PROTECT) ? dt^1 : dt;
#else
/* Write to destination without color key protection */
dst32[x] = dt;
#endif
#else
/* Write to destination without color key protection */
dst32[x] = ((((((lbB[x] & X_00FF00FF) - (lbT[x] & X_00FF00FF))*X) >> SHIFT_R8) + (lbT[x] & X_00FF00FF)) & X_00FF00FF) +
((((((lbB[x]>>SHIFT_R8) & X_00FF00FF) - ((lbT[x]>>SHIFT_R8) & X_00FF00FF))*X) + (lbT[x] & X_FF00FF00)) & X_FF00FF00);
#endif
}
dst32 += dp4;
line += vfraq;
}
}
#ifdef SOURCE_LOOKUP_AUTO
#undef SOURCE_LOOKUP_AUTO
#undef SOURCE_LOOKUP
#endif
#ifdef SOURCE_TYPE_AUTO
#undef SOURCE_TYPE_AUTO
#undef SOURCE_TYPE
#endif
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