diff options
Diffstat (limited to 'Source/DirectFB/src/gfx/generic/stretch_hvx_8.h')
| -rwxr-xr-x | Source/DirectFB/src/gfx/generic/stretch_hvx_8.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/Source/DirectFB/src/gfx/generic/stretch_hvx_8.h b/Source/DirectFB/src/gfx/generic/stretch_hvx_8.h new file mode 100755 index 0000000..e809304 --- /dev/null +++ b/Source/DirectFB/src/gfx/generic/stretch_hvx_8.h @@ -0,0 +1,149 @@ +#ifndef SOURCE_LOOKUP +#define SOURCE_LOOKUP(x) (x) +#define SOURCE_LOOKUP_AUTO +#endif + +#ifndef SOURCE_TYPE +#define SOURCE_TYPE u8 +#define SOURCE_TYPE_AUTO +#endif + +#if 0 +#define HVX_DEBUG(x...) direct_log_printf( NULL, x ) +#else +#define HVX_DEBUG(x...) do {} while (0) +#endif + +/*** OPTIMIZE by doing four pixels at once (vertically) with a 32 bit line buffer ***/ + +/*static void STRETCH_HVX_YV12( void *dst, + int dpitch, + const void *src, + int spitch, + int width, + int height, + int dst_width, + int dst_height, + DFBRegion *clip )*/ +{ + long x, y = 0; + long cw = clip->x2 - clip->x1 + 1; + long ch = clip->y2 - clip->y1 + 1; + long hfraq = ((long)(width - MINUS_1) << 18) / (long)(dst_width); + long vfraq = ((long)(height - MINUS_1) << 18) / (long)(dst_height); + long point0 = POINT_0 + clip->x1 * hfraq; + long point = point0; + long line = LINE_0 + clip->y1 * vfraq; + long ratios[cw]; + u8 *dst8; + + u8 _lbT[cw+32]; + u8 _lbB[cw+32]; + + u8 *lbX; + u8 *lbT = (u8*)((((ulong)(&_lbT[0])) + 31) & ~31); + u8 *lbB = (u8*)((((ulong)(&_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 += clip->x1 + clip->y1 * dpitch; + + dst8 = dst; + + /* + * Scale line by line. + */ + for (y=0; y<ch; y++) { + long nlT = LINE_T( line, vfraq ); + + D_ASSERT( nlT >= 0 ); + D_ASSERT( nlT < height-1 ); + + /* + * Fill line buffer(s) ? + */ + if (nlT != lineT) { + u8 L, R; + const SOURCE_TYPE *srcT = src + spitch * nlT; + const SOURCE_TYPE *srcB = 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 - L) * ratios[x]) >> 8) + L; + + L = SOURCE_LOOKUP(srcB[pl]); + R = SOURCE_LOOKUP(srcB[pl+1]); + + lbB[x] = (((R - L) * ratios[x]) >> 8) + L; + } + } + 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 - L) * ratios[x]) >> 8) + L; + } + } + + lineT = nlT; + } + + /* + * Vertical interpolation + */ + long X = LINE_TO_RATIO( line, vfraq ); + + for (x=0; x<cw; x++) + dst8[x] = (((lbB[x] - lbT[x]) * X) >> 8) + lbT[x]; + + dst8 += dpitch; + 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 + |