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// 01.05.2002 updated MBMotionCompensationBVOP |
// 01.05.2002 updated MBMotionCompensationBVOP |
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// 14.04.2002 bframe compensation |
// 14.04.2002 bframe compensation |
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#include <stdio.h> |
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#include "../encoder.h" |
#include "../encoder.h" |
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#include "../utils/mbfunctions.h" |
#include "../utils/mbfunctions.h" |
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#include "../image/interpolate8x8.h" |
#include "../image/interpolate8x8.h" |
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#include "../utils/timer.h" |
#include "../utils/timer.h" |
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#include "motion.h" |
#include "motion.h" |
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#ifndef ABS |
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#define ABS(X) (((X)>0)?(X):-(X)) |
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#endif |
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#ifndef SIGN |
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#define SIGN(X) (((X)>0)?1:-1) |
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#endif |
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#ifndef RSHIFT |
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#define RSHIFT(a,b) ((a) > 0 ? ((a) + (1<<((b)-1)))>>(b) : ((a) + (1<<((b)-1))-1)>>(b)) |
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#endif |
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/* assume b>0 */ |
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#ifndef RDIV |
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#define RDIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b)) |
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#endif |
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/* This is borrowed from decoder.c */ |
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static __inline int gmc_sanitize(int value, int quarterpel, int fcode) |
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{ |
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int length = 1 << (fcode+4); |
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// if (quarterpel) value *= 2; |
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if (value < -length) |
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return -length; |
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else if (value >= length) |
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return length-1; |
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else return value; |
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} |
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/* And this is borrowed from bitstream.c until we find a common solution */ |
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static uint32_t __inline |
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log2bin(uint32_t value) |
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{ |
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/* Changed by Chenm001 */ |
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#if !defined(_MSC_VER) |
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int n = 0; |
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while (value) { |
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value >>= 1; |
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n++; |
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} |
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return n; |
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#else |
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__asm { |
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bsr eax, value |
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inc eax |
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} |
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#endif |
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} |
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static __inline void |
static __inline void |
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compensate16x16_interpolate(int16_t * const dct_codes, |
compensate16x16_interpolate(int16_t * const dct_codes, |
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uint8_t * const cur, |
uint8_t * const cur, |
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uint32_t y, |
uint32_t y, |
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const int32_t dx, |
const int32_t dx, |
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const int32_t dy, |
const int32_t dy, |
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const uint32_t stride, |
const int32_t stride, |
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const int quarterpel, |
const int quarterpel, |
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const int reduced_resolution, |
const int reduced_resolution, |
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const uint32_t rounding) |
const int32_t rounding) |
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{ |
{ |
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const uint8_t * ptr; |
const uint8_t * ptr; |
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if (!reduced_resolution) { |
if (!reduced_resolution) { |
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if(quarterpel) { |
if(quarterpel) { |
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if (dx&3 | dy&3) { |
if ((dx&3) | (dy&3)) { |
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interpolate16x16_quarterpel(tmp - y * stride - x, |
interpolate16x16_quarterpel(tmp - y * stride - x, |
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(uint8_t *) ref, tmp + 32, |
(uint8_t *) ref, tmp + 32, |
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tmp + 64, tmp + 96, x, y, dx, dy, stride, rounding); |
tmp + 64, tmp + 96, x, y, dx, dy, stride, rounding); |
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uint32_t y, |
uint32_t y, |
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const int32_t dx, |
const int32_t dx, |
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const int32_t dy, |
const int32_t dy, |
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const uint32_t stride, |
const int32_t stride, |
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const uint32_t quarterpel, |
const int32_t quarterpel, |
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const int reduced_resolution, |
const int reduced_resolution, |
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const uint32_t rounding) |
const int32_t rounding) |
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{ |
{ |
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const uint8_t * ptr; |
const uint8_t * ptr; |
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|
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if (!reduced_resolution) { |
if (!reduced_resolution) { |
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if(quarterpel) { |
if(quarterpel) { |
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if (dx&3 | dy&3) { |
if ((dx&3) | (dy&3)) { |
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interpolate8x8_quarterpel(tmp - y*stride - x, |
interpolate8x8_quarterpel(tmp - y*stride - x, |
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(uint8_t *) ref, tmp + 32, |
(uint8_t *) ref, tmp + 32, |
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tmp + 64, tmp + 96, x, y, dx, dy, stride, rounding); |
tmp + 64, tmp + 96, x, y, dx, dy, stride, rounding); |
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} |
} |
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} |
} |
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static __inline void |
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compensate16x16_interpolate_ro(int16_t * const dct_codes, |
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const uint8_t * const cur, |
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const uint8_t * const ref, |
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const uint8_t * const refh, |
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const uint8_t * const refv, |
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const uint8_t * const refhv, |
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uint8_t * const tmp, |
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const uint32_t x, const uint32_t y, |
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const int32_t dx, const int32_t dy, |
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const int32_t stride, |
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const int quarterpel) |
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{ |
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const uint8_t * ptr; |
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if(quarterpel) { |
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if ((dx&3) | (dy&3)) { |
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interpolate16x16_quarterpel(tmp - y * stride - x, |
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(uint8_t *) ref, tmp + 32, |
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tmp + 64, tmp + 96, x, y, dx, dy, stride, 0); |
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ptr = tmp; |
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} else ptr = ref + (y + dy/4)*stride + x + dx/4; // fullpixel position |
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} else ptr = get_ref(ref, refh, refv, refhv, x, y, 1, dx, dy, stride); |
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transfer_8to16subro(dct_codes, cur + y * stride + x, |
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ptr, stride); |
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transfer_8to16subro(dct_codes+64, cur + y * stride + x + 8, |
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ptr + 8, stride); |
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transfer_8to16subro(dct_codes+128, cur + y * stride + x + 8*stride, |
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ptr + 8*stride, stride); |
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transfer_8to16subro(dct_codes+192, cur + y * stride + x + 8*stride+8, |
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ptr + 8*stride + 8, stride); |
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} |
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/* XXX: slow, inelegant... */ |
/* XXX: slow, inelegant... */ |
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static void |
static void |
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interpolate18x18_switch(uint8_t * const cur, |
interpolate18x18_switch(uint8_t * const cur, |
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const uint32_t y, |
const uint32_t y, |
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const int32_t dx, |
const int32_t dx, |
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const int dy, |
const int dy, |
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const uint32_t stride, |
const int32_t stride, |
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const uint32_t rounding) |
const int32_t rounding) |
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{ |
{ |
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interpolate8x8_switch(cur, refn, x-1, y-1, dx, dy, stride, rounding); |
interpolate8x8_switch(cur, refn, x-1, y-1, dx, dy, stride, rounding); |
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interpolate8x8_switch(cur, refn, x+7, y-1, dx, dy, stride, rounding); |
interpolate8x8_switch(cur, refn, x+7, y-1, dx, dy, stride, rounding); |
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const IMAGE * const Ref, |
const IMAGE * const Ref, |
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uint8_t * const temp, |
uint8_t * const temp, |
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int16_t * const coeff, |
int16_t * const coeff, |
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const uint32_t stride, |
const int32_t stride, |
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const int rounding, |
const int rounding, |
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const int rrv) |
const int rrv) |
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{ /* uv-block-based compensation */ |
{ /* uv-block-based compensation */ |
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interpolate8x8_switch2(temp, Ref->u, 8 * i, 8 * j, |
interpolate8x8_switch2(temp, Ref->u, 8 * i, 8 * j, |
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dx, dy, stride, rounding), |
dx, dy, stride, rounding), |
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stride); |
stride); |
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transfer_8to16sub(coeff + 64, Cur->v + 8 * j * stride + 8 * i, |
transfer_8to16sub(coeff + 64, Cur->v + 8 * j * stride + 8 * i, |
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interpolate8x8_switch2(temp, Ref->v, 8 * i, 8 * j, |
interpolate8x8_switch2(temp, Ref->v, 8 * i, 8 * j, |
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dx, dy, stride, rounding), |
dx, dy, stride, rounding), |
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const IMAGE * const refh, |
const IMAGE * const refh, |
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const IMAGE * const refv, |
const IMAGE * const refv, |
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const IMAGE * const refhv, |
const IMAGE * const refhv, |
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const IMAGE * const refGMC, |
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IMAGE * const cur, |
IMAGE * const cur, |
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int16_t * dct_codes, |
int16_t * dct_codes, |
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const uint32_t width, |
const uint32_t width, |
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const uint32_t height, |
const uint32_t height, |
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const uint32_t edged_width, |
const uint32_t edged_width, |
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const int quarterpel, |
const int32_t quarterpel, |
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const int reduced_resolution, |
const int reduced_resolution, |
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const uint32_t rounding) |
const int32_t rounding) |
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{ |
{ |
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int32_t dx = (quarterpel ? mb->qmvs[0].x : mb->mvs[0].x); |
int32_t dx; |
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int32_t dy = (quarterpel ? mb->qmvs[0].y : mb->mvs[0].y); |
int32_t dy; |
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uint8_t * const tmp = refv->u; |
uint8_t * const tmp = refv->u; |
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if ( mb->mode == MODE_NOT_CODED && dx==0 && dy==0 && !reduced_resolution) { /* quick copy */ |
if ( (!reduced_resolution) && (mb->mode == MODE_NOT_CODED) ) { /* quick copy for early SKIP */ |
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/* early SKIP is only activated in P-VOPs, not in S-VOPs, so mcsel can never be 1 */ |
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transfer16x16_copy(cur->y + 16 * (i + j * edged_width), |
transfer16x16_copy(cur->y + 16 * (i + j * edged_width), |
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ref->y + 16 * (i + j * edged_width), |
ref->y + 16 * (i + j * edged_width), |
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edged_width); |
edged_width); |
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return; |
return; |
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} |
} |
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|
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if ((mb->mode == MODE_NOT_CODED || mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) /*&& !quarterpel*/) { |
if ((mb->mode == MODE_NOT_CODED || mb->mode == MODE_INTER |
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|| mb->mode == MODE_INTER_Q)) { |
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| 320 |
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/* reduced resolution + GMC: not possible */ |
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| 322 |
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if (mb->mcsel) { |
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/* call normal routine once, easier than "if (mcsel)"ing all the time */ |
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transfer_8to16sub(&dct_codes[0*64], cur->y + 16*j*edged_width + 16*i, |
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refGMC->y + 16*j*edged_width + 16*i, edged_width); |
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transfer_8to16sub(&dct_codes[1*64], cur->y + 16*j*edged_width + 16*i+8, |
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refGMC->y + 16*j*edged_width + 16*i+8, edged_width); |
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transfer_8to16sub(&dct_codes[2*64], cur->y + (16*j+8)*edged_width + 16*i, |
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refGMC->y + (16*j+8)*edged_width + 16*i, edged_width); |
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transfer_8to16sub(&dct_codes[3*64], cur->y + (16*j+8)*edged_width + 16*i+8, |
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refGMC->y + (16*j+8)*edged_width + 16*i+8, edged_width); |
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| 335 |
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/* lumi is needed earlier for mode decision, but chroma should be done block-based, but it isn't, yet. */ |
| 336 |
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| 337 |
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transfer_8to16sub(&dct_codes[4 * 64], cur->u + 8 *j*edged_width/2 + 8*i, |
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refGMC->u + 8 *j*edged_width/2 + 8*i, edged_width/2); |
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| 340 |
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transfer_8to16sub(&dct_codes[5 * 64], cur->v + 8*j* edged_width/2 + 8*i, |
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refGMC->v + 8*j* edged_width/2 + 8*i, edged_width/2); |
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| 343 |
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return; |
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} |
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/* ordinary compensation */ |
| 347 |
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| 348 |
/* quick MODE_NOT_CODED for GMC with MV!=(0,0) is still needed */ |
dx = (quarterpel ? mb->qmvs[0].x : mb->mvs[0].x); |
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dy = (quarterpel ? mb->qmvs[0].y : mb->mvs[0].y); |
| 350 |
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| 351 |
if (reduced_resolution) { |
if (reduced_resolution) { |
| 352 |
dx = RRV_MV_SCALEUP(dx); |
dx = RRV_MV_SCALEUP(dx); |
| 357 |
refv->y, refhv->y, tmp, 16 * i, 16 * j, dx, dy, |
refv->y, refhv->y, tmp, 16 * i, 16 * j, dx, dy, |
| 358 |
edged_width, quarterpel, reduced_resolution, rounding); |
edged_width, quarterpel, reduced_resolution, rounding); |
| 359 |
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|
| 360 |
dx /= 1 + quarterpel; |
dx /= (int)(1 + quarterpel); |
| 361 |
dy /= 1 + quarterpel; |
dy /= (int)(1 + quarterpel); |
| 362 |
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|
| 363 |
dx = (dx >> 1) + roundtab_79[dx & 0x3]; |
dx = (dx >> 1) + roundtab_79[dx & 0x3]; |
| 364 |
dy = (dy >> 1) + roundtab_79[dy & 0x3]; |
dy = (dy >> 1) + roundtab_79[dy & 0x3]; |
| 365 |
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| 388 |
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| 389 |
CompensateChroma(dx, dy, i, j, cur, ref, tmp, |
CompensateChroma(dx, dy, i, j, cur, ref, tmp, |
| 390 |
&dct_codes[4 * 64], edged_width / 2, rounding, reduced_resolution); |
&dct_codes[4 * 64], edged_width / 2, rounding, reduced_resolution); |
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| 391 |
} |
} |
| 392 |
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| 393 |
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| 424 |
f_refv->y, f_refhv->y, tmp, 16 * i, 16 * j, dx, |
f_refv->y, f_refhv->y, tmp, 16 * i, 16 * j, dx, |
| 425 |
dy, edged_width, quarterpel, 0, 0); |
dy, edged_width, quarterpel, 0, 0); |
| 426 |
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|
| 427 |
dx /= 1 + quarterpel; |
if (quarterpel) { dx /= 2; dy /= 2; } |
| 428 |
dy /= 1 + quarterpel; |
|
| 429 |
CompensateChroma( (dx >> 1) + roundtab_79[dx & 0x3], |
CompensateChroma( (dx >> 1) + roundtab_79[dx & 0x3], |
| 430 |
(dy >> 1) + roundtab_79[dy & 0x3], |
(dy >> 1) + roundtab_79[dy & 0x3], |
| 431 |
i, j, cur, f_ref, tmp, |
i, j, cur, f_ref, tmp, |
| 436 |
case MODE_BACKWARD: |
case MODE_BACKWARD: |
| 437 |
b_dx = bmvs->x; b_dy = bmvs->y; |
b_dx = bmvs->x; b_dy = bmvs->y; |
| 438 |
|
|
| 439 |
compensate16x16_interpolate(&dct_codes[0 * 64], cur->y, b_ref->y, b_refh->y, |
compensate16x16_interpolate_ro(&dct_codes[0 * 64], cur->y, b_ref->y, b_refh->y, |
| 440 |
b_refv->y, b_refhv->y, tmp, 16 * i, 16 * j, b_dx, |
b_refv->y, b_refhv->y, tmp, 16 * i, 16 * j, b_dx, |
| 441 |
b_dy, edged_width, quarterpel, 0, 0); |
b_dy, edged_width, quarterpel); |
| 442 |
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|
| 443 |
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if (quarterpel) { b_dx /= 2; b_dy /= 2; } |
| 444 |
|
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b_dx /= 1 + quarterpel; |
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b_dy /= 1 + quarterpel; |
|
| 445 |
CompensateChroma( (b_dx >> 1) + roundtab_79[b_dx & 0x3], |
CompensateChroma( (b_dx >> 1) + roundtab_79[b_dx & 0x3], |
| 446 |
(b_dy >> 1) + roundtab_79[b_dy & 0x3], |
(b_dy >> 1) + roundtab_79[b_dy & 0x3], |
| 447 |
i, j, cur, b_ref, tmp, |
i, j, cur, b_ref, tmp, |
| 456 |
|
|
| 457 |
if (quarterpel) { |
if (quarterpel) { |
| 458 |
|
|
| 459 |
if (dx&3 | dy&3) { |
if ((dx&3) | (dy&3)) { |
| 460 |
interpolate16x16_quarterpel(tmp - i * 16 - j * 16 * edged_width, |
interpolate16x16_quarterpel(tmp - i * 16 - j * 16 * edged_width, |
| 461 |
(uint8_t *) f_ref->y, tmp + 32, |
(uint8_t *) f_ref->y, tmp + 32, |
| 462 |
tmp + 64, tmp + 96, 16*i, 16*j, dx, dy, edged_width, 0); |
tmp + 64, tmp + 96, 16*i, 16*j, dx, dy, edged_width, 0); |
| 463 |
ptr1 = tmp; |
ptr1 = tmp; |
| 464 |
} else ptr1 = f_ref->y + (16*j + dy/4)*edged_width + 16*i + dx/4; // fullpixel position |
} else ptr1 = f_ref->y + (16*j + dy/4)*edged_width + 16*i + dx/4; // fullpixel position |
| 465 |
|
|
| 466 |
if (b_dx&3 | b_dy&3) { |
if ((b_dx&3) | (b_dy&3)) { |
| 467 |
interpolate16x16_quarterpel(tmp - i * 16 - j * 16 * edged_width + 16, |
interpolate16x16_quarterpel(tmp - i * 16 - j * 16 * edged_width + 16, |
| 468 |
(uint8_t *) b_ref->y, tmp + 32, |
(uint8_t *) b_ref->y, tmp + 32, |
| 469 |
tmp + 64, tmp + 96, 16*i, 16*j, b_dx, b_dy, edged_width, 0); |
tmp + 64, tmp + 96, 16*i, 16*j, b_dx, b_dy, edged_width, 0); |
| 509 |
sumx += dx/2; sumy += dy/2; |
sumx += dx/2; sumy += dy/2; |
| 510 |
b_sumx += b_dx/2; b_sumy += b_dy/2; |
b_sumx += b_dx/2; b_sumy += b_dy/2; |
| 511 |
|
|
| 512 |
if (dx&3 | dy&3) { |
if ((dx&3) | (dy&3)) { |
| 513 |
interpolate8x8_quarterpel(tmp - (i * 16+(k&1)*8) - (j * 16+((k>>1)*8)) * edged_width, |
interpolate8x8_quarterpel(tmp - (i * 16+(k&1)*8) - (j * 16+((k>>1)*8)) * edged_width, |
| 514 |
(uint8_t *) f_ref->y, |
(uint8_t *) f_ref->y, |
| 515 |
tmp + 32, tmp + 64, tmp + 96, |
tmp + 32, tmp + 64, tmp + 96, |
| 517 |
ptr1 = tmp; |
ptr1 = tmp; |
| 518 |
} else ptr1 = f_ref->y + (16*j + (k>>1)*8 + dy/4)*edged_width + 16*i + (k&1)*8 + dx/4; |
} else ptr1 = f_ref->y + (16*j + (k>>1)*8 + dy/4)*edged_width + 16*i + (k&1)*8 + dx/4; |
| 519 |
|
|
| 520 |
if (b_dx&3 | b_dy&3) { |
if ((b_dx&3) | (b_dy&3)) { |
| 521 |
interpolate8x8_quarterpel(tmp - (i * 16+(k&1)*8) - (j * 16+((k>>1)*8)) * edged_width + 16, |
interpolate8x8_quarterpel(tmp - (i * 16+(k&1)*8) - (j * 16+((k>>1)*8)) * edged_width + 16, |
| 522 |
(uint8_t *) b_ref->y, |
(uint8_t *) b_ref->y, |
| 523 |
tmp + 16, tmp + 32, tmp + 48, |
tmp + 16, tmp + 32, tmp + 48, |
| 564 |
dx, dy, edged_width / 2, 0), |
dx, dy, edged_width / 2, 0), |
| 565 |
edged_width / 2); |
edged_width / 2); |
| 566 |
} |
} |
| 567 |
|
|
| 568 |
|
|
| 569 |
|
|
| 570 |
|
void generate_GMCparameters( const int num_wp, const int res, |
| 571 |
|
const WARPPOINTS *const warp, |
| 572 |
|
const int width, const int height, |
| 573 |
|
GMC_DATA *const gmc) |
| 574 |
|
{ |
| 575 |
|
const int du0 = warp->duv[0].x; |
| 576 |
|
const int dv0 = warp->duv[0].y; |
| 577 |
|
const int du1 = warp->duv[1].x; |
| 578 |
|
const int dv1 = warp->duv[1].y; |
| 579 |
|
const int du2 = warp->duv[2].x; |
| 580 |
|
const int dv2 = warp->duv[2].y; |
| 581 |
|
|
| 582 |
|
gmc->W = width; |
| 583 |
|
gmc->H = height; |
| 584 |
|
|
| 585 |
|
gmc->rho = 4 - log2bin(res-1); // = {3,2,1,0} for res={2,4,8,16} |
| 586 |
|
|
| 587 |
|
gmc->alpha = log2bin(gmc->W-1); |
| 588 |
|
gmc->Ws = (1 << gmc->alpha); |
| 589 |
|
|
| 590 |
|
gmc->dxF = 16*gmc->Ws + RDIV( 8*gmc->Ws*du1, gmc->W ); |
| 591 |
|
gmc->dxG = RDIV( 8*gmc->Ws*dv1, gmc->W ); |
| 592 |
|
gmc->Fo = (res*du0 + 1) << (gmc->alpha+gmc->rho-1); |
| 593 |
|
gmc->Go = (res*dv0 + 1) << (gmc->alpha+gmc->rho-1); |
| 594 |
|
|
| 595 |
|
if (num_wp==2) { |
| 596 |
|
gmc->dyF = -gmc->dxG; |
| 597 |
|
gmc->dyG = gmc->dxF; |
| 598 |
|
} |
| 599 |
|
else if (num_wp==3) { |
| 600 |
|
gmc->beta = log2bin(gmc->H-1); |
| 601 |
|
gmc->Hs = (1 << gmc->beta); |
| 602 |
|
gmc->dyF = RDIV( 8*gmc->Hs*du2, gmc->H ); |
| 603 |
|
gmc->dyG = 16*gmc->Hs + RDIV( 8*gmc->Hs*dv2, gmc->H ); |
| 604 |
|
if (gmc->beta > gmc->alpha) { |
| 605 |
|
gmc->dxF <<= (gmc->beta - gmc->alpha); |
| 606 |
|
gmc->dxG <<= (gmc->beta - gmc->alpha); |
| 607 |
|
gmc->alpha = gmc->beta; |
| 608 |
|
gmc->Ws = 1<< gmc->beta; |
| 609 |
|
} |
| 610 |
|
else { |
| 611 |
|
gmc->dyF <<= gmc->alpha - gmc->beta; |
| 612 |
|
gmc->dyG <<= gmc->alpha - gmc->beta; |
| 613 |
|
} |
| 614 |
|
} |
| 615 |
|
|
| 616 |
|
gmc->cFo = gmc->dxF + gmc->dyF + (1 << (gmc->alpha+gmc->rho+1)); |
| 617 |
|
gmc->cFo += 16*gmc->Ws*(du0-1); |
| 618 |
|
|
| 619 |
|
gmc->cGo = gmc->dxG + gmc->dyG + (1 << (gmc->alpha+gmc->rho+1)); |
| 620 |
|
gmc->cGo += 16*gmc->Ws*(dv0-1); |
| 621 |
|
} |
| 622 |
|
|
| 623 |
|
void |
| 624 |
|
generate_GMCimage( const GMC_DATA *const gmc_data, // [input] precalculated data |
| 625 |
|
const IMAGE *const pRef, // [input] |
| 626 |
|
const int mb_width, |
| 627 |
|
const int mb_height, |
| 628 |
|
const int stride, |
| 629 |
|
const int stride2, |
| 630 |
|
const int fcode, // [input] some parameters... |
| 631 |
|
const int32_t quarterpel, // [input] for rounding avgMV |
| 632 |
|
const int reduced_resolution, // [input] ignored |
| 633 |
|
const int32_t rounding, // [input] for rounding image data |
| 634 |
|
MACROBLOCK *const pMBs, // [output] average motion vectors |
| 635 |
|
IMAGE *const pGMC) // [output] full warped image |
| 636 |
|
{ |
| 637 |
|
|
| 638 |
|
unsigned int mj,mi; |
| 639 |
|
VECTOR avgMV; |
| 640 |
|
|
| 641 |
|
for (mj=0;mj<mb_height;mj++) |
| 642 |
|
for (mi=0;mi<mb_width; mi++) |
| 643 |
|
{ |
| 644 |
|
avgMV = generate_GMCimageMB(gmc_data, pRef, mi, mj, |
| 645 |
|
stride, stride2, quarterpel, rounding, pGMC); |
| 646 |
|
|
| 647 |
|
pMBs[mj*mb_width+mi].amv.x = gmc_sanitize(avgMV.x, quarterpel, fcode); |
| 648 |
|
pMBs[mj*mb_width+mi].amv.y = gmc_sanitize(avgMV.y, quarterpel, fcode); |
| 649 |
|
pMBs[mj*mb_width+mi].mcsel = 0; /* until mode decision */ |
| 650 |
|
} |
| 651 |
|
} |
| 652 |
|
|
| 653 |
|
|
| 654 |
|
|
| 655 |
|
#define MLT(i) (((16-(i))<<16) + (i)) |
| 656 |
|
static const uint32_t MTab[16] = { |
| 657 |
|
MLT( 0), MLT( 1), MLT( 2), MLT( 3), MLT( 4), MLT( 5), MLT( 6), MLT(7), |
| 658 |
|
MLT( 8), MLT( 9), MLT(10), MLT(11), MLT(12), MLT(13), MLT(14), MLT(15) |
| 659 |
|
}; |
| 660 |
|
#undef MLT |
| 661 |
|
|
| 662 |
|
VECTOR generate_GMCimageMB( const GMC_DATA *const gmc_data, |
| 663 |
|
const IMAGE *const pRef, |
| 664 |
|
const int mi, const int mj, |
| 665 |
|
const int stride, |
| 666 |
|
const int stride2, |
| 667 |
|
const int quarterpel, |
| 668 |
|
const int rounding, |
| 669 |
|
IMAGE *const pGMC) |
| 670 |
|
{ |
| 671 |
|
const int W = gmc_data->W; |
| 672 |
|
const int H = gmc_data->H; |
| 673 |
|
|
| 674 |
|
const int rho = gmc_data->rho; |
| 675 |
|
const int alpha = gmc_data->alpha; |
| 676 |
|
|
| 677 |
|
const int rounder = ( 128 - (rounding<<(rho+rho)) ) << 16; |
| 678 |
|
|
| 679 |
|
const int dxF = gmc_data->dxF; |
| 680 |
|
const int dyF = gmc_data->dyF; |
| 681 |
|
const int dxG = gmc_data->dxG; |
| 682 |
|
const int dyG = gmc_data->dyG; |
| 683 |
|
|
| 684 |
|
uint8_t *dstY, *dstU, *dstV; |
| 685 |
|
|
| 686 |
|
int I,J; |
| 687 |
|
VECTOR avgMV = {0,0}; |
| 688 |
|
|
| 689 |
|
int32_t Fj, Gj; |
| 690 |
|
|
| 691 |
|
dstY = &pGMC->y[(mj*16)*stride+mi*16] + 16; |
| 692 |
|
|
| 693 |
|
Fj = gmc_data->Fo + dyF*mj*16 + dxF*mi*16; |
| 694 |
|
Gj = gmc_data->Go + dyG*mj*16 + dxG*mi*16; |
| 695 |
|
for (J=16; J>0; --J) |
| 696 |
|
{ |
| 697 |
|
int32_t Fi, Gi; |
| 698 |
|
|
| 699 |
|
Fi = Fj; Fj += dyF; |
| 700 |
|
Gi = Gj; Gj += dyG; |
| 701 |
|
for (I=-16; I<0; ++I) |
| 702 |
|
{ |
| 703 |
|
int32_t F, G; |
| 704 |
|
uint32_t ri, rj; |
| 705 |
|
|
| 706 |
|
F = ( Fi >> (alpha+rho) ) << rho; Fi += dxF; |
| 707 |
|
G = ( Gi >> (alpha+rho) ) << rho; Gi += dxG; |
| 708 |
|
|
| 709 |
|
avgMV.x += F; |
| 710 |
|
avgMV.y += G; |
| 711 |
|
|
| 712 |
|
ri = MTab[F&15]; |
| 713 |
|
rj = MTab[G&15]; |
| 714 |
|
|
| 715 |
|
F >>= 4; |
| 716 |
|
G >>= 4; |
| 717 |
|
|
| 718 |
|
if (F< -1) F=-1; |
| 719 |
|
else if (F>W) F=W; |
| 720 |
|
if (G< -1) G=-1; |
| 721 |
|
else if (G>H) G=H; |
| 722 |
|
|
| 723 |
|
{ // MMX-like bilinear... |
| 724 |
|
const int offset = G*stride + F; |
| 725 |
|
uint32_t f0, f1; |
| 726 |
|
f0 = pRef->y[ offset +0 ]; |
| 727 |
|
f0 |= pRef->y[ offset +1 ] << 16; |
| 728 |
|
f1 = pRef->y[ offset+stride +0 ]; |
| 729 |
|
f1 |= pRef->y[ offset+stride +1 ] << 16; |
| 730 |
|
f0 = (ri*f0)>>16; |
| 731 |
|
f1 = (ri*f1) & 0x0fff0000; |
| 732 |
|
f0 |= f1; |
| 733 |
|
f0 = ( rj*f0 + rounder ) >> 24; |
| 734 |
|
|
| 735 |
|
dstY[I] = (uint8_t)f0; |
| 736 |
|
} |
| 737 |
|
} |
| 738 |
|
dstY += stride; |
| 739 |
|
} |
| 740 |
|
|
| 741 |
|
dstU = &pGMC->u[(mj*8)*stride2+mi*8] + 8; |
| 742 |
|
dstV = &pGMC->v[(mj*8)*stride2+mi*8] + 8; |
| 743 |
|
|
| 744 |
|
Fj = gmc_data->cFo + dyF*4 *mj*8 + dxF*4 *mi*8; |
| 745 |
|
Gj = gmc_data->cGo + dyG*4 *mj*8 + dxG*4 *mi*8; |
| 746 |
|
for (J=8; J>0; --J) |
| 747 |
|
{ |
| 748 |
|
int32_t Fi, Gi; |
| 749 |
|
Fi = Fj; Fj += 4*dyF; |
| 750 |
|
Gi = Gj; Gj += 4*dyG; |
| 751 |
|
|
| 752 |
|
for (I=-8; I<0; ++I) |
| 753 |
|
{ |
| 754 |
|
int32_t F, G; |
| 755 |
|
uint32_t ri, rj; |
| 756 |
|
|
| 757 |
|
F = ( Fi >> (alpha+rho+2) ) << rho; Fi += 4*dxF; |
| 758 |
|
G = ( Gi >> (alpha+rho+2) ) << rho; Gi += 4*dxG; |
| 759 |
|
|
| 760 |
|
ri = MTab[F&15]; |
| 761 |
|
rj = MTab[G&15]; |
| 762 |
|
|
| 763 |
|
F >>= 4; |
| 764 |
|
G >>= 4; |
| 765 |
|
|
| 766 |
|
if (F< -1) F=-1; |
| 767 |
|
else if (F>=W/2) F=W/2; |
| 768 |
|
if (G< -1) G=-1; |
| 769 |
|
else if (G>=H/2) G=H/2; |
| 770 |
|
|
| 771 |
|
{ |
| 772 |
|
const int offset = G*stride2 + F; |
| 773 |
|
uint32_t f0, f1; |
| 774 |
|
|
| 775 |
|
f0 = pRef->u[ offset +0 ]; |
| 776 |
|
f0 |= pRef->u[ offset +1 ] << 16; |
| 777 |
|
f1 = pRef->u[ offset+stride2 +0 ]; |
| 778 |
|
f1 |= pRef->u[ offset+stride2 +1 ] << 16; |
| 779 |
|
f0 = (ri*f0)>>16; |
| 780 |
|
f1 = (ri*f1) & 0x0fff0000; |
| 781 |
|
f0 |= f1; |
| 782 |
|
f0 = ( rj*f0 + rounder ) >> 24; |
| 783 |
|
|
| 784 |
|
dstU[I] = (uint8_t)f0; |
| 785 |
|
|
| 786 |
|
|
| 787 |
|
f0 = pRef->v[ offset +0 ]; |
| 788 |
|
f0 |= pRef->v[ offset +1 ] << 16; |
| 789 |
|
f1 = pRef->v[ offset+stride2 +0 ]; |
| 790 |
|
f1 |= pRef->v[ offset+stride2 +1 ] << 16; |
| 791 |
|
f0 = (ri*f0)>>16; |
| 792 |
|
f1 = (ri*f1) & 0x0fff0000; |
| 793 |
|
f0 |= f1; |
| 794 |
|
f0 = ( rj*f0 + rounder ) >> 24; |
| 795 |
|
|
| 796 |
|
dstV[I] = (uint8_t)f0; |
| 797 |
|
} |
| 798 |
|
} |
| 799 |
|
dstU += stride2; |
| 800 |
|
dstV += stride2; |
| 801 |
|
} |
| 802 |
|
|
| 803 |
|
|
| 804 |
|
avgMV.x -= 16*((256*mi+120)<<4); // 120 = 15*16/2 |
| 805 |
|
avgMV.y -= 16*((256*mj+120)<<4); |
| 806 |
|
|
| 807 |
|
avgMV.x = RSHIFT( avgMV.x, (4+7-quarterpel) ); |
| 808 |
|
avgMV.y = RSHIFT( avgMV.y, (4+7-quarterpel) ); |
| 809 |
|
|
| 810 |
|
return avgMV; |
| 811 |
|
} |
| 812 |
|
|
| 813 |
|
|
| 814 |
|
|
| 815 |
|
#ifdef OLD_GRUEL_GMC |
| 816 |
|
void |
| 817 |
|
generate_GMCparameters( const int num_wp, // [input]: number of warppoints |
| 818 |
|
const int res, // [input]: resolution |
| 819 |
|
const WARPPOINTS *const warp, // [input]: warp points |
| 820 |
|
const int width, const int height, |
| 821 |
|
GMC_DATA *const gmc) // [output] precalculated parameters |
| 822 |
|
{ |
| 823 |
|
|
| 824 |
|
/* We follow mainly two sources: The original standard, which is ugly, and the |
| 825 |
|
thesis from Andreas Dehnhardt, which is much nicer. |
| 826 |
|
|
| 827 |
|
Notation is: indices are written next to the variable, |
| 828 |
|
primes in the standard are denoted by a suffix 'p'. |
| 829 |
|
types are "c"=constant, "i"=input parameter, "f"=calculated, then fixed, |
| 830 |
|
"o"=output data, " "=other, "u" = unused, "p"=calc for every pixel |
| 831 |
|
|
| 832 |
|
type | variable name | ISO name (TeX-style) | value or range | usage |
| 833 |
|
------------------------------------------------------------------------------------- |
| 834 |
|
c | H | H | [16 , ?] | image width (w/o edges) |
| 835 |
|
c | W | W | [16 , ?] | image height (w/o edges) |
| 836 |
|
|
| 837 |
|
c | i0 | i_0 | 0 | ref. point #1, X |
| 838 |
|
c | j0 | j_0 | 0 | ref. point #1, Y |
| 839 |
|
c | i1 | i_1 | W | ref. point #2, X |
| 840 |
|
c | j1 | j_1 | 0 | ref. point #2, Y |
| 841 |
|
cu | i2 | i_2 | 0 | ref. point #3, X |
| 842 |
|
cu | i2 | j_2 | H | ref. point #3, Y |
| 843 |
|
|
| 844 |
|
i | du0 | du[0] | [-16863,16863] | warp vector #1, Y |
| 845 |
|
i | dv0 | dv[0] | [-16863,16863] | warp vector #1, Y |
| 846 |
|
i | du1 | du[1] | [-16863,16863] | warp vector #2, Y |
| 847 |
|
i | dv1 | dv[1] | [-16863,16863] | warp vector #2, Y |
| 848 |
|
iu | du2 | du[2] | [-16863,16863] | warp vector #3, Y |
| 849 |
|
iu | dv2 | dv[2] | [-16863,16863] | warp vector #3, Y |
| 850 |
|
|
| 851 |
|
i | s | s | {2,4,8,16} | interpol. resolution |
| 852 |
|
f | sigma | - | log2(s) | X / s == X >> sigma |
| 853 |
|
f | r | r | =16/s | complementary res. |
| 854 |
|
f | rho | \rho | log2(r) | X / r == X >> rho |
| 855 |
|
|
| 856 |
|
f | i0s | i'_0 | | |
| 857 |
|
f | j0s | j'_0 | | |
| 858 |
|
f | i1s | i'_1 | | |
| 859 |
|
f | j1s | j'_1 | | |
| 860 |
|
f | i2s | i'_2 | | |
| 861 |
|
f | j2s | j'_2 | | |
| 862 |
|
|
| 863 |
|
f | alpha | \alpha | | 2^{alpha-1} < W <= 2^alpha |
| 864 |
|
f | beta | \beta | | 2^{beta-1} < H <= 2^beta |
| 865 |
|
|
| 866 |
|
f | Ws | W' | W = 2^{alpha} | scaled width |
| 867 |
|
f | Hs | H' | W = 2^{beta} | scaled height |
| 868 |
|
|
| 869 |
|
f | i1ss | i''_1 | "virtual sprite stuff" |
| 870 |
|
f | j1ss | j''_1 | "virtual sprite stuff" |
| 871 |
|
f | i2ss | i''_2 | "virtual sprite stuff" |
| 872 |
|
f | j2ss | j''_2 | "virtual sprite stuff" |
| 873 |
|
*/ |
| 874 |
|
|
| 875 |
|
/* Some calculations are disabled because we only use 2 warppoints at the moment */ |
| 876 |
|
|
| 877 |
|
int du0 = warp->duv[0].x; |
| 878 |
|
int dv0 = warp->duv[0].y; |
| 879 |
|
int du1 = warp->duv[1].x; |
| 880 |
|
int dv1 = warp->duv[1].y; |
| 881 |
|
// int du2 = warp->duv[2].x; |
| 882 |
|
// int dv2 = warp->duv[2].y; |
| 883 |
|
|
| 884 |
|
gmc->num_wp = num_wp; |
| 885 |
|
|
| 886 |
|
gmc->s = res; /* scaling parameters 2,4,8 or 16 */ |
| 887 |
|
gmc->sigma = log2bin(res-1); /* log2bin(15)=4, log2bin(16)=5, log2bin(17)=5 */ |
| 888 |
|
gmc->r = 16/res; |
| 889 |
|
gmc->rho = 4 - gmc->sigma; /* = log2bin(r-1) */ |
| 890 |
|
|
| 891 |
|
gmc->W = width; |
| 892 |
|
gmc->H = height; /* fixed reference coordinates */ |
| 893 |
|
|
| 894 |
|
gmc->alpha = log2bin(gmc->W-1); |
| 895 |
|
gmc->Ws= 1<<gmc->alpha; |
| 896 |
|
|
| 897 |
|
// gmc->beta = log2bin(gmc->H-1); |
| 898 |
|
// gmc->Hs= 1<<gmc->beta; |
| 899 |
|
|
| 900 |
|
// printf("du0=%d dv0=%d du1=%d dv1=%d s=%d sigma=%d W=%d alpha=%d, Ws=%d, rho=%d\n",du0,dv0,du1,dv1,gmc->s,gmc->sigma,gmc->W,gmc->alpha,gmc->Ws,gmc->rho); |
| 901 |
|
|
| 902 |
|
/* i2s is only needed for num_wp >= 3, etc. */ |
| 903 |
|
/* the 's' values are in 1/s pel resolution */ |
| 904 |
|
gmc->i0s = res/2 * ( du0 ); |
| 905 |
|
gmc->j0s = res/2 * ( dv0 ); |
| 906 |
|
gmc->i1s = res/2 * (2*width + du1 + du0 ); |
| 907 |
|
gmc->j1s = res/2 * ( dv1 + dv0 ); |
| 908 |
|
// gmc->i2s = res/2 * ( du2 + du0 ); |
| 909 |
|
// gmc->j2s = res/2 * (2*height + dv2 + dv0 ); |
| 910 |
|
|
| 911 |
|
/* i2s and i2ss are only needed for num_wp == 3, etc. */ |
| 912 |
|
|
| 913 |
|
/* the 'ss' values are in 1/16 pel resolution */ |
| 914 |
|
gmc->i1ss = 16*gmc->Ws + ROUNDED_DIV(((gmc->W-gmc->Ws)*(gmc->r*gmc->i0s) + gmc->Ws*(gmc->r*gmc->i1s - 16*gmc->W)),gmc->W); |
| 915 |
|
gmc->j1ss = ROUNDED_DIV( ((gmc->W - gmc->Ws)*(gmc->r*gmc->j0s) + gmc->Ws*gmc->r*gmc->j1s) ,gmc->W ); |
| 916 |
|
|
| 917 |
|
// gmc->i2ss = ROUNDED_DIV( ((gmc->H - gmc->Hs)*(gmc->r*gmc->i0s) + gmc->Hs*(gmc->r*gmc->i2s)), gmc->H); |
| 918 |
|
// gmc->j2ss = 16*gmc->Hs + ROUNDED_DIV( ((gmc->H-gmc->Hs)*(gmc->r*gmc->j0s) + gmc->Ws*(gmc->r*gmc->j2s - 16*gmc->H)), gmc->H); |
| 919 |
|
|
| 920 |
|
return; |
| 921 |
|
} |
| 922 |
|
|
| 923 |
|
|
| 924 |
|
|
| 925 |
|
void |
| 926 |
|
generate_GMCimage( const GMC_DATA *const gmc_data, // [input] precalculated data |
| 927 |
|
const IMAGE *const pRef, // [input] |
| 928 |
|
const int mb_width, |
| 929 |
|
const int mb_height, |
| 930 |
|
const int stride, |
| 931 |
|
const int stride2, |
| 932 |
|
const int fcode, // [input] some parameters... |
| 933 |
|
const int32_t quarterpel, // [input] for rounding avgMV |
| 934 |
|
const int reduced_resolution, // [input] ignored |
| 935 |
|
const int32_t rounding, // [input] for rounding image data |
| 936 |
|
MACROBLOCK *const pMBs, // [output] average motion vectors |
| 937 |
|
IMAGE *const pGMC) // [output] full warped image |
| 938 |
|
{ |
| 939 |
|
|
| 940 |
|
unsigned int mj,mi; |
| 941 |
|
VECTOR avgMV; |
| 942 |
|
|
| 943 |
|
for (mj=0;mj<mb_height;mj++) |
| 944 |
|
for (mi=0;mi<mb_width; mi++) |
| 945 |
|
{ |
| 946 |
|
avgMV = generate_GMCimageMB(gmc_data, pRef, mi, mj, |
| 947 |
|
stride, stride2, quarterpel, rounding, pGMC); |
| 948 |
|
|
| 949 |
|
pMBs[mj*mb_width+mi].amv.x = gmc_sanitize(avgMV.x, quarterpel, fcode); |
| 950 |
|
pMBs[mj*mb_width+mi].amv.y = gmc_sanitize(avgMV.y, quarterpel, fcode); |
| 951 |
|
pMBs[mj*mb_width+mi].mcsel = 0; /* until mode decision */ |
| 952 |
|
} |
| 953 |
|
} |
| 954 |
|
|
| 955 |
|
|
| 956 |
|
VECTOR generate_GMCimageMB( const GMC_DATA *const gmc_data, /* [input] all precalc data */ |
| 957 |
|
const IMAGE *const pRef, /* [input] */ |
| 958 |
|
const int mi, const int mj, /* [input] MB position */ |
| 959 |
|
const int stride, /* [input] Lumi stride */ |
| 960 |
|
const int stride2, /* [input] chroma stride */ |
| 961 |
|
const int quarterpel, /* [input] for rounding of avgMV */ |
| 962 |
|
const int rounding, /* [input] for rounding of imgae data */ |
| 963 |
|
IMAGE *const pGMC) /* [outut] generate image */ |
| 964 |
|
|
| 965 |
|
/* |
| 966 |
|
type | variable name | ISO name (TeX-style) | value or range | usage |
| 967 |
|
------------------------------------------------------------------------------------- |
| 968 |
|
p | F | F(i,j) | | pelwise motion vector X in s-th pel |
| 969 |
|
p | G | G(i,j) | | pelwise motion vector Y in s-th pel |
| 970 |
|
p | Fc | F_c(i,j) | | |
| 971 |
|
p | Gc | G_c(i,j) | | same for chroma |
| 972 |
|
|
| 973 |
|
p | Y00 | Y_{00} | [0,255*s*s] | first: 4 neighbouring Y-values |
| 974 |
|
p | Y01 | Y_{01} | [0,255] | at fullpel position, around the |
| 975 |
|
p | Y10 | Y_{10} | [0,255*s] | position where pelweise MV points to |
| 976 |
|
p | Y11 | Y_{11} | [0,255] | later: bilinear interpol Y-values in Y00 |
| 977 |
|
|
| 978 |
|
p | C00 | C_{00} | [0,255*s*s] | same for chroma Cb and Cr |
| 979 |
|
p | C01 | C_{01} | [0,255] | |
| 980 |
|
p | C10 | C_{10} | [0,255*s] | |
| 981 |
|
p | C11 | C_{11} | [0,255] | |
| 982 |
|
|
| 983 |
|
*/ |
| 984 |
|
{ |
| 985 |
|
const int W = gmc_data->W; |
| 986 |
|
const int H = gmc_data->H; |
| 987 |
|
|
| 988 |
|
const int s = gmc_data->s; |
| 989 |
|
const int sigma = gmc_data->sigma; |
| 990 |
|
|
| 991 |
|
const int r = gmc_data->r; |
| 992 |
|
const int rho = gmc_data->rho; |
| 993 |
|
|
| 994 |
|
const int i0s = gmc_data->i0s; |
| 995 |
|
const int j0s = gmc_data->j0s; |
| 996 |
|
|
| 997 |
|
const int i1ss = gmc_data->i1ss; |
| 998 |
|
const int j1ss = gmc_data->j1ss; |
| 999 |
|
// const int i2ss = gmc_data->i2ss; |
| 1000 |
|
// const int j2ss = gmc_data->j2ss; |
| 1001 |
|
|
| 1002 |
|
const int alpha = gmc_data->alpha; |
| 1003 |
|
const int Ws = gmc_data->Ws; |
| 1004 |
|
|
| 1005 |
|
// const int beta = gmc_data->beta; |
| 1006 |
|
// const int Hs = gmc_data->Hs; |
| 1007 |
|
|
| 1008 |
|
int I,J; |
| 1009 |
|
VECTOR avgMV = {0,0}; |
| 1010 |
|
|
| 1011 |
|
for (J=16*mj;J<16*(mj+1);J++) |
| 1012 |
|
for (I=16*mi;I<16*(mi+1);I++) |
| 1013 |
|
{ |
| 1014 |
|
int F= i0s + ( ((-r*i0s+i1ss)*I + (r*j0s-j1ss)*J + (1<<(alpha+rho-1))) >> (alpha+rho) ); |
| 1015 |
|
int G= j0s + ( ((-r*j0s+j1ss)*I + (-r*i0s+i1ss)*J + (1<<(alpha+rho-1))) >> (alpha+rho) ); |
| 1016 |
|
|
| 1017 |
|
/* this naive implementation (with lots of multiplications) isn't slower (rather faster) than |
| 1018 |
|
working incremental. Don't ask me why... maybe the whole this is memory bound? */ |
| 1019 |
|
|
| 1020 |
|
const int ri= F & (s-1); // fractional part of pelwise MV X |
| 1021 |
|
const int rj= G & (s-1); // fractional part of pelwise MV Y |
| 1022 |
|
|
| 1023 |
|
int Y00,Y01,Y10,Y11; |
| 1024 |
|
|
| 1025 |
|
/* unclipped values are used for avgMV */ |
| 1026 |
|
avgMV.x += F-(I<<sigma); /* shift position to 1/s-pel, as the MV is */ |
| 1027 |
|
avgMV.y += G-(J<<sigma); /* TODO: don't do this (of course) */ |
| 1028 |
|
|
| 1029 |
|
F >>= sigma; |
| 1030 |
|
G >>= sigma; |
| 1031 |
|
|
| 1032 |
|
/* clip values to be in range. Since we have edges, clip to 1 less than lower boundary |
| 1033 |
|
this way positions F+1/G+1 are still right */ |
| 1034 |
|
|
| 1035 |
|
if (F< -1) |
| 1036 |
|
F=-1; |
| 1037 |
|
else if (F>W) |
| 1038 |
|
F=W; /* W or W-1 doesn't matter, so save 1 subtract ;-) */ |
| 1039 |
|
if (G< -1) |
| 1040 |
|
G=-1; |
| 1041 |
|
else if (G>H) |
| 1042 |
|
G=H; /* dito */ |
| 1043 |
|
|
| 1044 |
|
Y00 = pRef->y[ G*stride + F ]; // Lumi values |
| 1045 |
|
Y01 = pRef->y[ G*stride + F+1 ]; |
| 1046 |
|
Y10 = pRef->y[ G*stride + F+stride ]; |
| 1047 |
|
Y11 = pRef->y[ G*stride + F+stride+1 ]; |
| 1048 |
|
|
| 1049 |
|
/* bilinear interpolation */ |
| 1050 |
|
Y00 = ((s-ri)*Y00 + ri*Y01); |
| 1051 |
|
Y10 = ((s-ri)*Y10 + ri*Y11); |
| 1052 |
|
Y00 = ((s-rj)*Y00 + rj*Y10 + s*s/2 - rounding ) >> (sigma+sigma); |
| 1053 |
|
|
| 1054 |
|
pGMC->y[J*stride+I] = (uint8_t)Y00; /* output 1 Y-pixel */ |
| 1055 |
|
} |
| 1056 |
|
|
| 1057 |
|
|
| 1058 |
|
/* doing chroma _here_ is even more stupid and slow, because won't be used until Compensation and |
| 1059 |
|
most likely not even then (only if the block really _is_ GMC) |
| 1060 |
|
*/ |
| 1061 |
|
|
| 1062 |
|
for (J=8*mj;J<8*(mj+1);J++) /* this plays the role of j_c,i_c in the standard */ |
| 1063 |
|
for (I=8*mi;I<8*(mi+1);I++) /* For I_c we have to use I_c = 4*i_c+1 ! */ |
| 1064 |
|
{ |
| 1065 |
|
/* same positions for both chroma components, U=Cb and V=Cr */ |
| 1066 |
|
int Fc=((-r*i0s+i1ss)*(4*I+1) + (r*j0s-j1ss)*(4*J+1) +2*Ws*r*i0s |
| 1067 |
|
-16*Ws +(1<<(alpha+rho+1)))>>(alpha+rho+2); |
| 1068 |
|
int Gc=((-r*j0s+j1ss)*(4*I+1) +(-r*i0s+i1ss)*(4*J+1) +2*Ws*r*j0s |
| 1069 |
|
-16*Ws +(1<<(alpha+rho+1))) >>(alpha+rho+2); |
| 1070 |
|
|
| 1071 |
|
const int ri= Fc & (s-1); // fractional part of pelwise MV X |
| 1072 |
|
const int rj= Gc & (s-1); // fractional part of pelwise MV Y |
| 1073 |
|
|
| 1074 |
|
int C00,C01,C10,C11; |
| 1075 |
|
|
| 1076 |
|
Fc >>= sigma; |
| 1077 |
|
Gc >>= sigma; |
| 1078 |
|
|
| 1079 |
|
if (Fc< -1) |
| 1080 |
|
Fc=-1; |
| 1081 |
|
else if (Fc>=W/2) |
| 1082 |
|
Fc=W/2; /* W or W-1 doesn't matter, so save 1 subtraction ;-) */ |
| 1083 |
|
if (Gc< -1) |
| 1084 |
|
Gc=-1; |
| 1085 |
|
else if (Gc>=H/2) |
| 1086 |
|
Gc=H/2; /* dito */ |
| 1087 |
|
|
| 1088 |
|
/* now calculate U data */ |
| 1089 |
|
C00 = pRef->u[ Gc*stride2 + Fc ]; // chroma-value Cb |
| 1090 |
|
C01 = pRef->u[ Gc*stride2 + Fc+1 ]; |
| 1091 |
|
C10 = pRef->u[ (Gc+1)*stride2 + Fc ]; |
| 1092 |
|
C11 = pRef->u[ (Gc+1)*stride2 + Fc+1 ]; |
| 1093 |
|
|
| 1094 |
|
/* bilinear interpolation */ |
| 1095 |
|
C00 = ((s-ri)*C00 + ri*C01); |
| 1096 |
|
C10 = ((s-ri)*C10 + ri*C11); |
| 1097 |
|
C00 = ((s-rj)*C00 + rj*C10 + s*s/2 - rounding ) >> (sigma+sigma); |
| 1098 |
|
|
| 1099 |
|
pGMC->u[J*stride2+I] = (uint8_t)C00; /* output 1 U-pixel */ |
| 1100 |
|
|
| 1101 |
|
/* now calculate V data */ |
| 1102 |
|
C00 = pRef->v[ Gc*stride2 + Fc ]; // chroma-value Cr |
| 1103 |
|
C01 = pRef->v[ Gc*stride2 + Fc+1 ]; |
| 1104 |
|
C10 = pRef->v[ (Gc+1)*stride2 + Fc ]; |
| 1105 |
|
C11 = pRef->v[ (Gc+1)*stride2 + Fc+1 ]; |
| 1106 |
|
|
| 1107 |
|
/* bilinear interpolation */ |
| 1108 |
|
C00 = ((s-ri)*C00 + ri*C01); |
| 1109 |
|
C10 = ((s-ri)*C10 + ri*C11); |
| 1110 |
|
C00 = ((s-rj)*C00 + rj*C10 + s*s/2 - rounding ) >> (sigma+sigma); |
| 1111 |
|
|
| 1112 |
|
pGMC->v[J*stride2+I] = (uint8_t)C00; /* output 1 V-pixel */ |
| 1113 |
|
} |
| 1114 |
|
|
| 1115 |
|
/* The average vector is rounded from 1/s-pel to 1/2 or 1/4 using the '//' operator*/ |
| 1116 |
|
|
| 1117 |
|
avgMV.x = RSHIFT( avgMV.x, (sigma+7-quarterpel) ); |
| 1118 |
|
avgMV.y = RSHIFT( avgMV.y, (sigma+7-quarterpel) ); |
| 1119 |
|
|
| 1120 |
|
/* ^^^^ this is the way MS Reference Software does it */ |
| 1121 |
|
|
| 1122 |
|
return avgMV; /* clipping to fcode area is done outside! */ |
| 1123 |
|
} |
| 1124 |
|
|
| 1125 |
|
#endif |
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