diff options
Diffstat (limited to 'chromium/third_party/dav1d/libdav1d/src/ppc/cdef_tmpl.c')
| -rw-r--r-- | chromium/third_party/dav1d/libdav1d/src/ppc/cdef_tmpl.c | 487 |
1 files changed, 487 insertions, 0 deletions
diff --git a/chromium/third_party/dav1d/libdav1d/src/ppc/cdef_tmpl.c b/chromium/third_party/dav1d/libdav1d/src/ppc/cdef_tmpl.c new file mode 100644 index 00000000000..e2e759810f7 --- /dev/null +++ b/chromium/third_party/dav1d/libdav1d/src/ppc/cdef_tmpl.c @@ -0,0 +1,487 @@ +/* + * Copyright © 2019, Luca Barbato + * 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 "src/ppc/dav1d_types.h" +#include "src/ppc/cdef.h" + +#if BITDEPTH == 8 +static inline i16x8 vconstrain(const i16x8 diff, const int16_t threshold, + const int damping) +{ + const i16x8 zero = vec_splat_s16(0); + if (!threshold) return zero; + const uint16_t shift = imax(0, damping - ulog2(threshold)); + const i16x8 abs_diff = vec_abs(diff); + const b16x8 mask = vec_cmplt(diff, zero); + const i16x8 thr = vec_splats(threshold); + const i16x8 sub = vec_sub(thr, vec_sra(abs_diff, vec_splats(shift))); + const i16x8 max = vec_max(zero, sub); + const i16x8 min = vec_min(abs_diff, max); + const i16x8 neg = vec_sub(zero, min); + return vec_sel(min, neg, mask); +} + +static inline void copy4xN(uint16_t *tmp, const ptrdiff_t tmp_stride, + const uint8_t *src, const ptrdiff_t src_stride, + const uint8_t (*left)[2], const uint8_t *const top, + const uint8_t *const bottom, const int w, const int h, + const enum CdefEdgeFlags edges) +{ + const u16x8 fill = vec_splats((uint16_t)INT16_MAX); + + u16x8 l0; + u16x8 l1; + + int y_start = -2, y_end = h + 2; + + // Copy top and bottom first + if (!(edges & CDEF_HAVE_TOP)) { + l0 = fill; + l1 = fill; + y_start = 0; + } else { + l0 = u8h_to_u16(vec_vsx_ld(0, top + 0 * src_stride - 2)); + l1 = u8h_to_u16(vec_vsx_ld(0, top + 1 * src_stride - 2)); + } + + vec_st(l0, 0, tmp - 2 * 8); + vec_st(l1, 0, tmp - 1 * 8); + + if (!(edges & CDEF_HAVE_BOTTOM)) { + l0 = fill; + l1 = fill; + y_end -= 2; + } else { + l0 = u8h_to_u16(vec_vsx_ld(0, bottom + 0 * src_stride - 2)); + l1 = u8h_to_u16(vec_vsx_ld(0, bottom + 1 * src_stride - 2)); + } + + vec_st(l0, 0, tmp + (h + 0) * 8); + vec_st(l1, 0, tmp + (h + 1) * 8); + + int y_with_left_edge = 0; + if (!(edges & CDEF_HAVE_LEFT)) { + u16x8 l = u8h_to_u16(vec_vsx_ld(0, src)); + vec_vsx_st(l, 0, tmp + 2); + + y_with_left_edge = 1; + } + + for (int y = y_with_left_edge; y < h; y++) { + u16x8 l = u8h_to_u16(vec_vsx_ld(0, src - 2 + y * src_stride)); + vec_st(l, 0, tmp + y * 8); + } + + if (!(edges & CDEF_HAVE_LEFT)) { + for (int y = y_start; y < y_end; y++) { + tmp[y * 8] = INT16_MAX; + tmp[1 + y * 8] = INT16_MAX; + } + } else { + for (int y = 0; y < h; y++) { + tmp[y * 8] = left[y][0]; + tmp[1 + y * 8] = left[y][1]; + } + } + if (!(edges & CDEF_HAVE_RIGHT)) { + for (int y = y_start; y < y_end; y++) { + tmp[- 2 + (y + 1) * 8] = INT16_MAX; + tmp[- 1 + (y + 1) * 8] = INT16_MAX; + } + } +} + +static inline void copy8xN(uint16_t *tmp, const ptrdiff_t tmp_stride, + const uint8_t *src, const ptrdiff_t src_stride, + const uint8_t (*left)[2], const uint8_t *const top, + const uint8_t *const bottom, const int w, const int h, + const enum CdefEdgeFlags edges) +{ + const u16x8 fill = vec_splats((uint16_t)INT16_MAX); + + u16x8 l0h, l0l; + u16x8 l1h, l1l; + + int y_start = -2, y_end = h + 2; + + // Copy top and bottom first + if (!(edges & CDEF_HAVE_TOP)) { + l0h = fill; + l0l = fill; + l1h = fill; + l1l = fill; + y_start = 0; + } else { + u8x16 l0 = vec_vsx_ld(0, top + 0 * src_stride - 2); + u8x16 l1 = vec_vsx_ld(0, top + 1 * src_stride - 2); + l0h = u8h_to_u16(l0); + l0l = u8l_to_u16(l0); + l1h = u8h_to_u16(l1); + l1l = u8l_to_u16(l1); + } + + vec_st(l0h, 0, tmp - 4 * 8); + vec_st(l0l, 0, tmp - 3 * 8); + vec_st(l1h, 0, tmp - 2 * 8); + vec_st(l1l, 0, tmp - 1 * 8); + + if (!(edges & CDEF_HAVE_BOTTOM)) { + l0h = fill; + l0l = fill; + l1h = fill; + l1l = fill; + y_end -= 2; + } else { + u8x16 l0 = vec_vsx_ld(0, bottom + 0 * src_stride - 2); + u8x16 l1 = vec_vsx_ld(0, bottom + 1 * src_stride - 2); + l0h = u8h_to_u16(l0); + l0l = u8l_to_u16(l0); + l1h = u8h_to_u16(l1); + l1l = u8l_to_u16(l1); + } + + vec_st(l0h, 0, tmp + (h + 0) * 16); + vec_st(l0l, 0, tmp + (h + 0) * 16 + 8); + vec_st(l1h, 0, tmp + (h + 1) * 16); + vec_st(l1l, 0, tmp + (h + 1) * 16 + 8); + + int y_with_left_edge = 0; + if (!(edges & CDEF_HAVE_LEFT)) { + u8x16 l = vec_vsx_ld(0, src); + u16x8 lh = u8h_to_u16(l); + u16x8 ll = u8l_to_u16(l); + vec_vsx_st(lh, 0, tmp + 2); + vec_vsx_st(ll, 0, tmp + 8 + 2); + + y_with_left_edge = 1; + } + + for (int y = y_with_left_edge; y < h; y++) { + u8x16 l = vec_vsx_ld(0, src - 2 + y * src_stride); + u16x8 lh = u8h_to_u16(l); + u16x8 ll = u8l_to_u16(l); + vec_st(lh, 0, tmp + y * 16); + vec_st(ll, 0, tmp + 8 + y * 16); + } + + if (!(edges & CDEF_HAVE_LEFT)) { + for (int y = y_start; y < y_end; y++) { + tmp[y * 16] = INT16_MAX; + tmp[1 + y * 16] = INT16_MAX; + } + } else { + for (int y = 0; y < h; y++) { + tmp[y * 16] = left[y][0]; + tmp[1 + y * 16] = left[y][1]; + } + } + if (!(edges & CDEF_HAVE_RIGHT)) { + for (int y = y_start; y < y_end; y++) { + tmp[- 6 + (y + 1) * 16] = INT16_MAX; + tmp[- 5 + (y + 1) * 16] = INT16_MAX; + } + } +} + +static inline i16x8 max_mask(i16x8 a, i16x8 b) { + const i16x8 I16X8_INT16_MAX = vec_splats((int16_t)INT16_MAX); + + const b16x8 mask = vec_cmpeq(a, I16X8_INT16_MAX); + + const i16x8 val = vec_sel(a, b, mask); + + return vec_max(val, b); +} + +#define LOAD_PIX(addr) \ + const i16x8 px = (i16x8)vec_vsx_ld(0, addr); \ + i16x8 max = px; \ + i16x8 min = px; \ + i16x8 sum = vec_splat_s16(0); + +#define LOAD_PIX4(addr) \ + const i16x8 a = (i16x8)vec_vsx_ld(0, addr); \ + const i16x8 b = (i16x8)vec_vsx_ld(0, addr + tmp_stride); \ + const i16x8 px = vec_xxpermdi(a, b, 0); \ + i16x8 max = px; \ + i16x8 min = px; \ + i16x8 sum = vec_splat_s16(0); + +#define LOAD_DIR(p, addr, o0, o1) \ + const i16x8 p ## 0 = (i16x8)vec_vsx_ld(0, addr + o0); \ + const i16x8 p ## 1 = (i16x8)vec_vsx_ld(0, addr - o0); \ + const i16x8 p ## 2 = (i16x8)vec_vsx_ld(0, addr + o1); \ + const i16x8 p ## 3 = (i16x8)vec_vsx_ld(0, addr - o1); + +#define LOAD_DIR4(p, addr, o0, o1) \ + LOAD_DIR(p ## a, addr, o0, o1) \ + LOAD_DIR(p ## b, addr + tmp_stride, o0, o1) \ + const i16x8 p ## 0 = vec_xxpermdi(p ## a ## 0, p ## b ## 0, 0); \ + const i16x8 p ## 1 = vec_xxpermdi(p ## a ## 1, p ## b ## 1, 0); \ + const i16x8 p ## 2 = vec_xxpermdi(p ## a ## 2, p ## b ## 2, 0); \ + const i16x8 p ## 3 = vec_xxpermdi(p ## a ## 3, p ## b ## 3, 0); + +#define CONSTRAIN(p, strength) \ + const i16x8 p ## _d0 = vec_sub(p ## 0, px); \ + const i16x8 p ## _d1 = vec_sub(p ## 1, px); \ + const i16x8 p ## _d2 = vec_sub(p ## 2, px); \ + const i16x8 p ## _d3 = vec_sub(p ## 3, px); \ +\ + i16x8 p ## _c0 = vconstrain(p ## _d0, strength, damping); \ + i16x8 p ## _c1 = vconstrain(p ## _d1, strength, damping); \ + i16x8 p ## _c2 = vconstrain(p ## _d2, strength, damping); \ + i16x8 p ## _c3 = vconstrain(p ## _d3, strength, damping); + +#define MIN_MAX(p) \ + max = max_mask(p ## 0, max); \ + min = vec_min(p ## 0, min); \ + max = max_mask(p ## 1, max); \ + min = vec_min(p ## 1, min); \ + max = max_mask(p ## 2, max); \ + min = vec_min(p ## 2, min); \ + max = max_mask(p ## 3, max); \ + min = vec_min(p ## 3, min); + +#define PRI_0(p) \ + p ## _c0 = vec_add(vec_sl(p ## _c0, vec_splat_u16(1)), vec_sl(p ## _c0, vec_splats(tap_even))); \ + p ## _c1 = vec_add(vec_sl(p ## _c1, vec_splat_u16(1)), vec_sl(p ## _c1, vec_splats(tap_even))); + +#define PRI_1(p) \ + p ## _c2 = vec_sub(vec_sl(p ## _c2, vec_splat_u16(2)), vec_sl(p ## _c2, vec_splats(tap_even))); \ + p ## _c3 = vec_sub(vec_sl(p ## _c3, vec_splat_u16(2)), vec_sl(p ## _c3, vec_splats(tap_even))); + +#define SEC_0(p) \ + p ## _c0 = vec_sl(p ## _c0, vec_splat_u16(1)); \ + p ## _c1 = vec_sl(p ## _c1, vec_splat_u16(1)); \ + p ## _c2 = vec_sl(p ## _c2, vec_splat_u16(1)); \ + p ## _c3 = vec_sl(p ## _c3, vec_splat_u16(1)); + +#define UPDATE_SUM(p) \ + const i16x8 p ## sum0 = vec_add(p ## _c0, p ## _c1); \ + const i16x8 p ## sum1 = vec_add(p ## _c2, p ## _c3); \ + sum = vec_add(sum, p ## sum0); \ + sum = vec_add(sum, p ## sum1); + +static inline void +filter_4xN(pixel *dst, const ptrdiff_t dst_stride, + const pixel (*left)[2], const pixel *const top, + const pixel *const bottom, const int w, const int h, + const int pri_strength, const int sec_strength, const int dir, + const int damping, const enum CdefEdgeFlags edges, + const ptrdiff_t tmp_stride, uint16_t *tmp) +{ + const int8_t cdef_directions[8 /* dir */][2 /* pass */] = { + { -1 * tmp_stride + 1, -2 * tmp_stride + 2 }, + { 0 * tmp_stride + 1, -1 * tmp_stride + 2 }, + { 0 * tmp_stride + 1, 0 * tmp_stride + 2 }, + { 0 * tmp_stride + 1, 1 * tmp_stride + 2 }, + { 1 * tmp_stride + 1, 2 * tmp_stride + 2 }, + { 1 * tmp_stride + 0, 2 * tmp_stride + 1 }, + { 1 * tmp_stride + 0, 2 * tmp_stride + 0 }, + { 1 * tmp_stride + 0, 2 * tmp_stride - 1 } + }; + const int bitdepth_min_8 = bitdepth_from_max(bitdepth_max) - 8; + const uint16_t tap_even = !((pri_strength >> bitdepth_min_8) & 1); + const int off1 = cdef_directions[dir][0]; + const int off1_1 = cdef_directions[dir][1]; + + const int off2 = cdef_directions[(dir + 2) & 7][0]; + const int off3 = cdef_directions[(dir + 6) & 7][0]; + + const int off2_1 = cdef_directions[(dir + 2) & 7][1]; + const int off3_1 = cdef_directions[(dir + 6) & 7][1]; + + copy4xN(tmp - 2, tmp_stride, dst, dst_stride, left, top, bottom, w, h, edges); + + for (int y = 0; y < h / 2; y++) { + LOAD_PIX4(tmp) + + // Primary pass + LOAD_DIR4(p, tmp, off1, off1_1) + + CONSTRAIN(p, pri_strength) + + MIN_MAX(p) + + PRI_0(p) + PRI_1(p) + + UPDATE_SUM(p) + + // Secondary pass 1 + LOAD_DIR4(s, tmp, off2, off3) + + CONSTRAIN(s, sec_strength) + + MIN_MAX(s) + + SEC_0(s) + + UPDATE_SUM(s) + + // Secondary pass 2 + LOAD_DIR4(s2, tmp, off2_1, off3_1) + + CONSTRAIN(s2, sec_strength) + + MIN_MAX(s2) + + UPDATE_SUM(s2) + + // Store + i16x8 bias = vec_and((i16x8)vec_cmplt(sum, vec_splat_s16(0)), vec_splat_s16(1)); + bias = vec_sub(vec_splat_s16(8), bias); + i16x8 unclamped = vec_add(px, vec_sra(vec_add(sum, bias), vec_splat_u16(4))); + i16x8 vdst = vec_max(vec_min(unclamped, max), min); + + dst[0] = vdst[0]; + dst[1] = vdst[1]; + dst[2] = vdst[2]; + dst[3] = vdst[3]; + + tmp += tmp_stride; + dst += PXSTRIDE(dst_stride); + dst[0] = vdst[4]; + dst[1] = vdst[5]; + dst[2] = vdst[6]; + dst[3] = vdst[7]; + + tmp += tmp_stride; + dst += PXSTRIDE(dst_stride); + } +} + +static inline void +filter_8xN(pixel *dst, const ptrdiff_t dst_stride, + const pixel (*left)[2], const pixel *const top, + const pixel *const bottom, const int w, const int h, + const int pri_strength, const int sec_strength, const int dir, + const int damping, const enum CdefEdgeFlags edges, + const ptrdiff_t tmp_stride, uint16_t *tmp) +{ + const int8_t cdef_directions[8 /* dir */][2 /* pass */] = { + { -1 * tmp_stride + 1, -2 * tmp_stride + 2 }, + { 0 * tmp_stride + 1, -1 * tmp_stride + 2 }, + { 0 * tmp_stride + 1, 0 * tmp_stride + 2 }, + { 0 * tmp_stride + 1, 1 * tmp_stride + 2 }, + { 1 * tmp_stride + 1, 2 * tmp_stride + 2 }, + { 1 * tmp_stride + 0, 2 * tmp_stride + 1 }, + { 1 * tmp_stride + 0, 2 * tmp_stride + 0 }, + { 1 * tmp_stride + 0, 2 * tmp_stride - 1 } + }; + const int bitdepth_min_8 = bitdepth_from_max(bitdepth_max) - 8; + + + const uint16_t tap_even = !((pri_strength >> bitdepth_min_8) & 1); + const int off1 = cdef_directions[dir][0]; + const int off1_1 = cdef_directions[dir][1]; + + const int off2 = cdef_directions[(dir + 2) & 7][0]; + const int off3 = cdef_directions[(dir + 6) & 7][0]; + + const int off2_1 = cdef_directions[(dir + 2) & 7][1]; + const int off3_1 = cdef_directions[(dir + 6) & 7][1]; + + copy8xN(tmp - 2, tmp_stride, dst, dst_stride, left, top, bottom, w, h, edges); + + for (int y = 0; y < h; y++) { + LOAD_PIX(tmp) + + // Primary pass + LOAD_DIR(p, tmp, off1, off1_1) + + CONSTRAIN(p, pri_strength) + + MIN_MAX(p) + + PRI_0(p) + PRI_1(p) + + UPDATE_SUM(p) + + // Secondary pass 1 + LOAD_DIR(s, tmp, off2, off3) + + CONSTRAIN(s, sec_strength) + + MIN_MAX(s) + + SEC_0(s) + + UPDATE_SUM(s) + + // Secondary pass 2 + LOAD_DIR(s2, tmp, off2_1, off3_1) + + CONSTRAIN(s2, sec_strength) + + MIN_MAX(s2) + + UPDATE_SUM(s2) + + // Store + i16x8 bias = vec_and((i16x8)vec_cmplt(sum, vec_splat_s16(0)), vec_splat_s16(1)); + bias = vec_sub(vec_splat_s16(8), bias); + i16x8 unclamped = vec_add(px, vec_sra(vec_add(sum, bias), vec_splat_u16(4))); + i16x8 vdst = vec_max(vec_min(unclamped, max), min); + + dst[0] = vdst[0]; + dst[1] = vdst[1]; + dst[2] = vdst[2]; + dst[3] = vdst[3]; + dst[4] = vdst[4]; + dst[5] = vdst[5]; + dst[6] = vdst[6]; + dst[7] = vdst[7]; + + tmp += tmp_stride; + dst += PXSTRIDE(dst_stride); + } + +} + +#define cdef_fn(w, h, tmp_stride) \ +void dav1d_cdef_filter_##w##x##h##_vsx(pixel *const dst, \ + const ptrdiff_t dst_stride, \ + const pixel (*left)[2], \ + const pixel *const top, \ + const pixel *const bottom, \ + const int pri_strength, \ + const int sec_strength, \ + const int dir, \ + const int damping, \ + const enum CdefEdgeFlags edges) \ +{ \ + ALIGN_STK_16(uint16_t, tmp_buf, 12 * tmp_stride + 8,); \ + uint16_t *tmp = tmp_buf + 2 * tmp_stride + 2; \ + filter_##w##xN(dst, dst_stride, left, top, bottom, w, h, pri_strength, \ + sec_strength, dir, damping, edges, tmp_stride, tmp); \ +} + +cdef_fn(4, 4, 8); +cdef_fn(4, 8, 8); +cdef_fn(8, 8, 16); +#endif |