ref: 73d5a46cc2d236abd5438ec373a72d904c9ba6b9
dir: /src/mc.c/
/*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2018, Two Orioles, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include "common/attributes.h"
#include "common/intops.h"
#include "src/mc.h"
#include "src/tables.h"
static NOINLINE void
put_c(pixel *dst, const ptrdiff_t dst_stride,
const pixel *src, const ptrdiff_t src_stride, const int w, int h)
{
do {
pixel_copy(dst, src, w);
dst += dst_stride;
src += src_stride;
} while (--h);
}
static NOINLINE void
prep_c(coef *tmp, const pixel *src, const ptrdiff_t src_stride,
const int w, int h)
{
do {
for (int x = 0; x < w; x++)
tmp[x] = src[x] << 4;
tmp += w;
src += src_stride;
} while (--h);
}
#define FILTER_8TAP(src, x, F, stride) \
(F[0] * src[x + -3 * stride] + \
F[1] * src[x + -2 * stride] + \
F[2] * src[x + -1 * stride] + \
F[3] * src[x + +0 * stride] + \
F[4] * src[x + +1 * stride] + \
F[5] * src[x + +2 * stride] + \
F[6] * src[x + +3 * stride] + \
F[7] * src[x + +4 * stride])
#define FILTER_8TAP_RND(src, x, F, stride, sh) \
((FILTER_8TAP(src, x, F, stride) + ((1 << sh) >> 1)) >> sh)
#define FILTER_8TAP_CLIP(src, x, F, stride, sh) \
iclip_pixel(FILTER_8TAP_RND(src, x, F, stride, sh))
#define GET_FILTERS() \
const int8_t *const fh = !mx ? NULL : w > 4 ? \
dav1d_mc_subpel_filters[filter_type & 3][mx - 1] : \
dav1d_mc_subpel_filters[3 + (filter_type & 1)][mx - 1]; \
const int8_t *const fv = !my ? NULL : h > 4 ? \
dav1d_mc_subpel_filters[filter_type >> 2][my - 1] : \
dav1d_mc_subpel_filters[3 + ((filter_type >> 2) & 1)][my - 1]; \
static NOINLINE void
put_8tap_c(pixel *dst, ptrdiff_t dst_stride,
const pixel *src, ptrdiff_t src_stride,
const int w, int h, const int mx, const int my,
const int filter_type)
{
GET_FILTERS();
dst_stride = PXSTRIDE(dst_stride);
src_stride = PXSTRIDE(src_stride);
if (fh) {
if (fv) {
int tmp_h = h + 7;
coef mid[128 * 135], *mid_ptr = mid;
src -= src_stride * 3;
do {
for (int x = 0; x < w; x++)
mid_ptr[x] = FILTER_8TAP_RND(src, x, fh, 1, 2);
mid_ptr += 128;
src += src_stride;
} while (--tmp_h);
mid_ptr = mid + 128 * 3;
do {
for (int x = 0; x < w; x++)
dst[x] = FILTER_8TAP_CLIP(mid_ptr, x, fv, 128, 10);
mid_ptr += 128;
dst += dst_stride;
} while (--h);
} else {
do {
for (int x = 0; x < w; x++) {
const int px = FILTER_8TAP_RND(src, x, fh, 1, 2);
dst[x] = iclip_pixel((px + 8) >> 4);
}
dst += dst_stride;
src += src_stride;
} while (--h);
}
} else if (fv) {
do {
for (int x = 0; x < w; x++)
dst[x] = FILTER_8TAP_CLIP(src, x, fv, src_stride, 6);
dst += dst_stride;
src += src_stride;
} while (--h);
} else
put_c(dst, dst_stride, src, src_stride, w, h);
}
static NOINLINE void
prep_8tap_c(coef *tmp, const pixel *src, ptrdiff_t src_stride,
const int w, int h, const int mx, const int my,
const int filter_type)
{
GET_FILTERS();
src_stride = PXSTRIDE(src_stride);
if (fh) {
if (fv) {
int tmp_h = h + 7;
coef mid[128 * 135], *mid_ptr = mid;
src -= src_stride * 3;
do {
for (int x = 0; x < w; x++)
mid_ptr[x] = FILTER_8TAP_RND(src, x, fh, 1, 2);
mid_ptr += 128;
src += src_stride;
} while (--tmp_h);
mid_ptr = mid + 128 * 3;
do {
for (int x = 0; x < w; x++)
tmp[x] = FILTER_8TAP_RND(mid_ptr, x, fv, 128, 6);
mid_ptr += 128;
tmp += w;
} while (--h);
} else {
do {
for (int x = 0; x < w; x++)
tmp[x] = FILTER_8TAP_RND(src, x, fh, 1, 2);
tmp += w;
src += src_stride;
} while (--h);
}
} else if (fv) {
do {
for (int x = 0; x < w; x++)
tmp[x] = FILTER_8TAP_RND(src, x, fv, src_stride, 2);
tmp += w;
src += src_stride;
} while (--h);
} else
prep_c(tmp, src, src_stride, w, h);
}
#define filter_fns(type, type_h, type_v) \
static void put_8tap_##type##_c(pixel *const dst, \
const ptrdiff_t dst_stride, \
const pixel *const src, \
const ptrdiff_t src_stride, \
const int w, const int h, \
const int mx, const int my) \
{ \
put_8tap_c(dst, dst_stride, src, src_stride, w, h, mx, my, \
type_h | (type_v << 2)); \
} \
static void prep_8tap_##type##_c(coef *const tmp, \
const pixel *const src, \
const ptrdiff_t src_stride, \
const int w, const int h, \
const int mx, const int my) \
{ \
prep_8tap_c(tmp, src, src_stride, w, h, mx, my, \
type_h | (type_v << 2)); \
}
filter_fns(regular, FILTER_8TAP_REGULAR, FILTER_8TAP_REGULAR)
filter_fns(regular_sharp, FILTER_8TAP_REGULAR, FILTER_8TAP_SHARP)
filter_fns(regular_smooth, FILTER_8TAP_REGULAR, FILTER_8TAP_SMOOTH)
filter_fns(smooth, FILTER_8TAP_SMOOTH, FILTER_8TAP_SMOOTH)
filter_fns(smooth_regular, FILTER_8TAP_SMOOTH, FILTER_8TAP_REGULAR)
filter_fns(smooth_sharp, FILTER_8TAP_SMOOTH, FILTER_8TAP_SHARP)
filter_fns(sharp, FILTER_8TAP_SHARP, FILTER_8TAP_SHARP)
filter_fns(sharp_regular, FILTER_8TAP_SHARP, FILTER_8TAP_REGULAR)
filter_fns(sharp_smooth, FILTER_8TAP_SHARP, FILTER_8TAP_SMOOTH)
#define FILTER_BILIN(src, x, mxy, stride) \
(16 * src[x] + (mxy * (src[x + stride] - src[x])))
#define FILTER_BILIN_RND(src, x, mxy, stride, sh) \
((FILTER_BILIN(src, x, mxy, stride) + ((1 << sh) >> 1)) >> sh)
#define FILTER_BILIN_CLIP(src, x, mxy, stride, sh) \
iclip_pixel(FILTER_BILIN_RND(src, x, mxy, stride, sh))
static void put_bilin_c(pixel *dst, ptrdiff_t dst_stride,
const pixel *src, ptrdiff_t src_stride,
const int w, int h, const int mx, const int my)
{
dst_stride = PXSTRIDE(dst_stride);
src_stride = PXSTRIDE(src_stride);
if (mx) {
if (my) {
coef mid[128 * 129], *mid_ptr = mid;
int tmp_h = h + 1;
do {
for (int x = 0; x < w; x++)
mid_ptr[x] = FILTER_BILIN(src, x, mx, 1);
mid_ptr += 128;
src += src_stride;
} while (--tmp_h);
mid_ptr = mid;
do {
for (int x = 0; x < w; x++)
dst[x] = FILTER_BILIN_CLIP(mid_ptr, x, my, 128, 8);
mid_ptr += 128;
dst += dst_stride;
} while (--h);
} else {
do {
for (int x = 0; x < w; x++)
dst[x] = FILTER_BILIN_CLIP(src, x, mx, 1, 4);
dst += dst_stride;
src += src_stride;
} while (--h);
}
} else if (my) {
do {
for (int x = 0; x < w; x++)
dst[x] = FILTER_BILIN_CLIP(src, x, my, src_stride, 4);
dst += dst_stride;
src += src_stride;
} while (--h);
} else
put_c(dst, dst_stride, src, src_stride, w, h);
}
static void prep_bilin_c(coef *tmp,
const pixel *src, ptrdiff_t src_stride,
const int w, int h, const int mx, const int my)
{
src_stride = PXSTRIDE(src_stride);
if (mx) {
if (my) {
coef mid[128 * 129], *mid_ptr = mid;
int tmp_h = h + 1;
do {
for (int x = 0; x < w; x++)
mid_ptr[x] = FILTER_BILIN(src, x, mx, 1);
mid_ptr += 128;
src += src_stride;
} while (--tmp_h);
mid_ptr = mid;
do {
for (int x = 0; x < w; x++)
tmp[x] = FILTER_BILIN_RND(mid_ptr, x, my, 128, 4);
mid_ptr += 128;
tmp += w;
} while (--h);
} else {
do {
for (int x = 0; x < w; x++)
tmp[x] = FILTER_BILIN(src, x, mx, 1);
tmp += w;
src += src_stride;
} while (--h);
}
} else if (my) {
do {
for (int x = 0; x < w; x++)
tmp[x] = FILTER_BILIN(src, x, my, src_stride);
tmp += w;
src += src_stride;
} while (--h);
} else
prep_c(tmp, src, src_stride, w, h);
}
static void avg_c(pixel *dst, const ptrdiff_t dst_stride,
const coef *tmp1, const coef *tmp2, const int w, int h)
{
do {
for (int x = 0; x < w; x++)
dst[x] = iclip_pixel((tmp1[x] + tmp2[x] + 16) >> 5);
tmp1 += w;
tmp2 += w;
dst += PXSTRIDE(dst_stride);
} while (--h);
}
static void w_avg_c(pixel *dst, const ptrdiff_t dst_stride,
const coef *tmp1, const coef *tmp2, const int w, int h,
const int weight)
{
do {
for (int x = 0; x < w; x++)
dst[x] = iclip_pixel((tmp1[x] * weight +
tmp2[x] * (16 - weight) + 128) >> 8);
tmp1 += w;
tmp2 += w;
dst += PXSTRIDE(dst_stride);
} while (--h);
}
static void mask_c(pixel *dst, const ptrdiff_t dst_stride,
const coef *tmp1, const coef *tmp2, const int w, int h,
const uint8_t *mask)
{
do {
for (int x = 0; x < w; x++)
dst[x] = iclip_pixel((tmp1[x] * mask[x] +
tmp2[x] * (64 - mask[x]) + 512) >> 10);
tmp1 += w;
tmp2 += w;
mask += w;
dst += PXSTRIDE(dst_stride);
} while (--h);
}
static void blend_c(pixel *dst, const ptrdiff_t dst_stride,
const pixel *tmp, const ptrdiff_t tmp_stride,
const int w, const int h,
const uint8_t *mask, const ptrdiff_t m_stride)
{
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
#define blend_px(a, b, m) (((a * (64 - m) + b * m) + 32) >> 6)
dst[x] = blend_px(dst[x], tmp[x], mask[m_stride == 1 ? 0 : x]);
}
dst += PXSTRIDE(dst_stride);
tmp += PXSTRIDE(tmp_stride);
mask += m_stride;
}
}
static void w_mask_c(pixel *dst, const ptrdiff_t dst_stride,
const coef *tmp1, const coef *tmp2, const int w, int h,
uint8_t *mask, const int sign,
const int ss_hor, const int ss_ver)
{
// store mask at 2x2 resolution, i.e. store 2x1 sum for even rows,
// and then load this intermediate to calculate final value for odd rows
const int rnd = 8 << (BITDEPTH - 8);
do {
for (int x = 0; x < w; x++) {
const int m = imin(38 + ((abs(tmp1[x] - tmp2[x]) + rnd) >> BITDEPTH), 64);
dst[x] = iclip_pixel((tmp1[x] * m +
tmp2[x] * (64 - m) + 512) >> 10);
if (ss_hor) {
x++;
const int n = imin(38 + ((abs(tmp1[x] - tmp2[x]) + rnd) >> BITDEPTH), 64);
dst[x] = iclip_pixel((tmp1[x] * n +
tmp2[x] * (64 - n) + 512) >> 10);
if (h & ss_ver) {
mask[x >> 1] = (m + n + mask[x >> 1] + 2 - sign) >> 2;
} else if (ss_ver) {
mask[x >> 1] = m + n;
} else {
mask[x >> 1] = (m + n + 1 - sign) >> 1;
}
} else {
mask[x] = m;
}
}
tmp1 += w;
tmp2 += w;
dst += PXSTRIDE(dst_stride);
if (!ss_ver || (h & 1)) mask += w >> ss_hor;
} while (--h);
}
#define w_mask_fns(ssn, ss_hor, ss_ver) \
static void w_mask_##ssn##_c(pixel *const dst, const ptrdiff_t dst_stride, \
const coef *const tmp1, const coef *const tmp2, \
const int w, const int h, uint8_t *mask, \
const int sign) \
{ \
w_mask_c(dst, dst_stride, tmp1, tmp2, w, h, mask, sign, ss_hor, ss_ver); \
}
w_mask_fns(444, 0, 0);
w_mask_fns(422, 1, 0);
w_mask_fns(420, 1, 1);
#undef w_mask_fns
static void warp_affine_8x8_c(pixel *dst, const ptrdiff_t dst_stride,
const pixel *src, const ptrdiff_t src_stride,
const int16_t *const abcd, int mx, int my)
{
coef mid[15 * 8], *mid_ptr = mid;
src -= 3 * PXSTRIDE(src_stride);
for (int y = 0; y < 15; y++, mx += abcd[1]) {
for (int x = 0, tmx = mx; x < 8; x++, tmx += abcd[0]) {
const int8_t *const filter =
dav1d_mc_warp_filter[64 + ((tmx + 512) >> 10)];
mid_ptr[x] = FILTER_8TAP_RND(src, x, filter, 1, 3);
}
src += PXSTRIDE(src_stride);
mid_ptr += 8;
}
mid_ptr = &mid[3 * 8];
for (int y = 0; y < 8; y++, my += abcd[3]) {
for (int x = 0, tmy = my; x < 8; x++, tmy += abcd[2]) {
const int8_t *const filter =
dav1d_mc_warp_filter[64 + ((tmy + 512) >> 10)];
dst[x] = FILTER_8TAP_CLIP(mid_ptr, x, filter, 8, 11);
}
mid_ptr += 8;
dst += PXSTRIDE(dst_stride);
}
}
static void warp_affine_8x8t_c(coef *tmp, const ptrdiff_t tmp_stride,
const pixel *src, const ptrdiff_t src_stride,
const int16_t *const abcd, int mx, int my)
{
coef mid[15 * 8], *mid_ptr = mid;
src -= 3 * PXSTRIDE(src_stride);
for (int y = 0; y < 15; y++, mx += abcd[1]) {
for (int x = 0, tmx = mx; x < 8; x++, tmx += abcd[0]) {
const int8_t *const filter =
dav1d_mc_warp_filter[64 + ((tmx + 512) >> 10)];
mid_ptr[x] = FILTER_8TAP_RND(src, x, filter, 1, 3);
}
src += PXSTRIDE(src_stride);
mid_ptr += 8;
}
mid_ptr = &mid[3 * 8];
for (int y = 0; y < 8; y++, my += abcd[3]) {
for (int x = 0, tmy = my; x < 8; x++, tmy += abcd[2]) {
const int8_t *const filter =
dav1d_mc_warp_filter[64 + ((tmy + 512) >> 10)];
tmp[x] = FILTER_8TAP_RND(mid_ptr, x, filter, 8, 7);
}
mid_ptr += 8;
tmp += tmp_stride;
}
}
void bitfn(dav1d_mc_dsp_init)(Dav1dMCDSPContext *const c) {
#define init_mc_fns(type, name) do { \
c->mc [type] = put_##name##_c; \
c->mct[type] = prep_##name##_c; \
} while (0)
init_mc_fns(FILTER_2D_8TAP_REGULAR, 8tap_regular);
init_mc_fns(FILTER_2D_8TAP_REGULAR_SMOOTH, 8tap_regular_smooth);
init_mc_fns(FILTER_2D_8TAP_REGULAR_SHARP, 8tap_regular_sharp);
init_mc_fns(FILTER_2D_8TAP_SHARP_REGULAR, 8tap_sharp_regular);
init_mc_fns(FILTER_2D_8TAP_SHARP_SMOOTH, 8tap_sharp_smooth);
init_mc_fns(FILTER_2D_8TAP_SHARP, 8tap_sharp);
init_mc_fns(FILTER_2D_8TAP_SMOOTH_REGULAR, 8tap_smooth_regular);
init_mc_fns(FILTER_2D_8TAP_SMOOTH, 8tap_smooth);
init_mc_fns(FILTER_2D_8TAP_SMOOTH_SHARP, 8tap_smooth_sharp);
init_mc_fns(FILTER_2D_BILINEAR, bilin);
c->avg = avg_c;
c->w_avg = w_avg_c;
c->mask = mask_c;
c->blend = blend_c;
c->w_mask[0] = w_mask_444_c;
c->w_mask[1] = w_mask_422_c;
c->w_mask[2] = w_mask_420_c;
c->warp8x8 = warp_affine_8x8_c;
c->warp8x8t = warp_affine_8x8t_c;
#if HAVE_ASM && ARCH_X86
bitfn(dav1d_mc_dsp_init_x86)(c);
#endif
}