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Diffstat (limited to 'third_party/dav1d/src/filmgrain_tmpl.c')
| -rw-r--r-- | third_party/dav1d/src/filmgrain_tmpl.c | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/third_party/dav1d/src/filmgrain_tmpl.c b/third_party/dav1d/src/filmgrain_tmpl.c new file mode 100644 index 0000000000..0986ac2a58 --- /dev/null +++ b/third_party/dav1d/src/filmgrain_tmpl.c @@ -0,0 +1,441 @@ +/* + * Copyright © 2018, Niklas Haas + * 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 "common/attributes.h" +#include "common/intops.h" + +#include "src/filmgrain.h" +#include "src/tables.h" + +#define SUB_GRAIN_WIDTH 44 +#define SUB_GRAIN_HEIGHT 38 + +static inline int get_random_number(const int bits, unsigned *const state) { + const int r = *state; + unsigned bit = ((r >> 0) ^ (r >> 1) ^ (r >> 3) ^ (r >> 12)) & 1; + *state = (r >> 1) | (bit << 15); + + return (*state >> (16 - bits)) & ((1 << bits) - 1); +} + +static inline int round2(const int x, const uint64_t shift) { + return (x + ((1 << shift) >> 1)) >> shift; +} + +static void generate_grain_y_c(entry buf[][GRAIN_WIDTH], + const Dav1dFilmGrainData *const data + HIGHBD_DECL_SUFFIX) +{ + const int bitdepth_min_8 = bitdepth_from_max(bitdepth_max) - 8; + unsigned seed = data->seed; + const int shift = 4 - bitdepth_min_8 + data->grain_scale_shift; + const int grain_ctr = 128 << bitdepth_min_8; + const int grain_min = -grain_ctr, grain_max = grain_ctr - 1; + + for (int y = 0; y < GRAIN_HEIGHT; y++) { + for (int x = 0; x < GRAIN_WIDTH; x++) { + const int value = get_random_number(11, &seed); + buf[y][x] = round2(dav1d_gaussian_sequence[ value ], shift); + } + } + + const int ar_pad = 3; + const int ar_lag = data->ar_coeff_lag; + + for (int y = ar_pad; y < GRAIN_HEIGHT; y++) { + for (int x = ar_pad; x < GRAIN_WIDTH - ar_pad; x++) { + const int8_t *coeff = data->ar_coeffs_y; + int sum = 0; + for (int dy = -ar_lag; dy <= 0; dy++) { + for (int dx = -ar_lag; dx <= ar_lag; dx++) { + if (!dx && !dy) + break; + sum += *(coeff++) * buf[y + dy][x + dx]; + } + } + + const int grain = buf[y][x] + round2(sum, data->ar_coeff_shift); + buf[y][x] = iclip(grain, grain_min, grain_max); + } + } +} + +static NOINLINE void +generate_grain_uv_c(entry buf[][GRAIN_WIDTH], + const entry buf_y[][GRAIN_WIDTH], + const Dav1dFilmGrainData *const data, const intptr_t uv, + const int subx, const int suby HIGHBD_DECL_SUFFIX) +{ + const int bitdepth_min_8 = bitdepth_from_max(bitdepth_max) - 8; + unsigned seed = data->seed ^ (uv ? 0x49d8 : 0xb524); + const int shift = 4 - bitdepth_min_8 + data->grain_scale_shift; + const int grain_ctr = 128 << bitdepth_min_8; + const int grain_min = -grain_ctr, grain_max = grain_ctr - 1; + + const int chromaW = subx ? SUB_GRAIN_WIDTH : GRAIN_WIDTH; + const int chromaH = suby ? SUB_GRAIN_HEIGHT : GRAIN_HEIGHT; + + for (int y = 0; y < chromaH; y++) { + for (int x = 0; x < chromaW; x++) { + const int value = get_random_number(11, &seed); + buf[y][x] = round2(dav1d_gaussian_sequence[ value ], shift); + } + } + + const int ar_pad = 3; + const int ar_lag = data->ar_coeff_lag; + + for (int y = ar_pad; y < chromaH; y++) { + for (int x = ar_pad; x < chromaW - ar_pad; x++) { + const int8_t *coeff = data->ar_coeffs_uv[uv]; + int sum = 0; + for (int dy = -ar_lag; dy <= 0; dy++) { + for (int dx = -ar_lag; dx <= ar_lag; dx++) { + // For the final (current) pixel, we need to add in the + // contribution from the luma grain texture + if (!dx && !dy) { + if (!data->num_y_points) + break; + int luma = 0; + const int lumaX = ((x - ar_pad) << subx) + ar_pad; + const int lumaY = ((y - ar_pad) << suby) + ar_pad; + for (int i = 0; i <= suby; i++) { + for (int j = 0; j <= subx; j++) { + luma += buf_y[lumaY + i][lumaX + j]; + } + } + luma = round2(luma, subx + suby); + sum += luma * (*coeff); + break; + } + + sum += *(coeff++) * buf[y + dy][x + dx]; + } + } + + const int grain = buf[y][x] + round2(sum, data->ar_coeff_shift); + buf[y][x] = iclip(grain, grain_min, grain_max); + } + } +} + +#define gnuv_ss_fn(nm, ss_x, ss_y) \ +static decl_generate_grain_uv_fn(generate_grain_uv_##nm##_c) { \ + generate_grain_uv_c(buf, buf_y, data, uv, ss_x, ss_y HIGHBD_TAIL_SUFFIX); \ +} + +gnuv_ss_fn(420, 1, 1); +gnuv_ss_fn(422, 1, 0); +gnuv_ss_fn(444, 0, 0); + +// samples from the correct block of a grain LUT, while taking into account the +// offsets provided by the offsets cache +static inline entry sample_lut(const entry grain_lut[][GRAIN_WIDTH], + const int offsets[2][2], const int subx, const int suby, + const int bx, const int by, const int x, const int y) +{ + const int randval = offsets[bx][by]; + const int offx = 3 + (2 >> subx) * (3 + (randval >> 4)); + const int offy = 3 + (2 >> suby) * (3 + (randval & 0xF)); + return grain_lut[offy + y + (BLOCK_SIZE >> suby) * by] + [offx + x + (BLOCK_SIZE >> subx) * bx]; +} + +static void fgy_32x32xn_c(pixel *const dst_row, const pixel *const src_row, + const ptrdiff_t stride, + const Dav1dFilmGrainData *const data, const size_t pw, + const uint8_t scaling[SCALING_SIZE], + const entry grain_lut[][GRAIN_WIDTH], + const int bh, const int row_num HIGHBD_DECL_SUFFIX) +{ + const int rows = 1 + (data->overlap_flag && row_num > 0); + const int bitdepth_min_8 = bitdepth_from_max(bitdepth_max) - 8; + const int grain_ctr = 128 << bitdepth_min_8; + const int grain_min = -grain_ctr, grain_max = grain_ctr - 1; + + int min_value, max_value; + if (data->clip_to_restricted_range) { + min_value = 16 << bitdepth_min_8; + max_value = 235 << bitdepth_min_8; + } else { + min_value = 0; + max_value = BITDEPTH_MAX; + } + + // seed[0] contains the current row, seed[1] contains the previous + unsigned seed[2]; + for (int i = 0; i < rows; i++) { + seed[i] = data->seed; + seed[i] ^= (((row_num - i) * 37 + 178) & 0xFF) << 8; + seed[i] ^= (((row_num - i) * 173 + 105) & 0xFF); + } + + assert(stride % (BLOCK_SIZE * sizeof(pixel)) == 0); + + int offsets[2 /* col offset */][2 /* row offset */]; + + // process this row in BLOCK_SIZE^2 blocks + for (unsigned bx = 0; bx < pw; bx += BLOCK_SIZE) { + const int bw = imin(BLOCK_SIZE, (int) pw - bx); + + if (data->overlap_flag && bx) { + // shift previous offsets left + for (int i = 0; i < rows; i++) + offsets[1][i] = offsets[0][i]; + } + + // update current offsets + for (int i = 0; i < rows; i++) + offsets[0][i] = get_random_number(8, &seed[i]); + + // x/y block offsets to compensate for overlapped regions + const int ystart = data->overlap_flag && row_num ? imin(2, bh) : 0; + const int xstart = data->overlap_flag && bx ? imin(2, bw) : 0; + + static const int w[2][2] = { { 27, 17 }, { 17, 27 } }; + +#define add_noise_y(x, y, grain) \ + const pixel *const src = src_row + (y) * PXSTRIDE(stride) + (x) + bx; \ + pixel *const dst = dst_row + (y) * PXSTRIDE(stride) + (x) + bx; \ + const int noise = round2(scaling[ *src ] * (grain), data->scaling_shift); \ + *dst = iclip(*src + noise, min_value, max_value); + + for (int y = ystart; y < bh; y++) { + // Non-overlapped image region (straightforward) + for (int x = xstart; x < bw; x++) { + int grain = sample_lut(grain_lut, offsets, 0, 0, 0, 0, x, y); + add_noise_y(x, y, grain); + } + + // Special case for overlapped column + for (int x = 0; x < xstart; x++) { + int grain = sample_lut(grain_lut, offsets, 0, 0, 0, 0, x, y); + int old = sample_lut(grain_lut, offsets, 0, 0, 1, 0, x, y); + grain = round2(old * w[x][0] + grain * w[x][1], 5); + grain = iclip(grain, grain_min, grain_max); + add_noise_y(x, y, grain); + } + } + + for (int y = 0; y < ystart; y++) { + // Special case for overlapped row (sans corner) + for (int x = xstart; x < bw; x++) { + int grain = sample_lut(grain_lut, offsets, 0, 0, 0, 0, x, y); + int old = sample_lut(grain_lut, offsets, 0, 0, 0, 1, x, y); + grain = round2(old * w[y][0] + grain * w[y][1], 5); + grain = iclip(grain, grain_min, grain_max); + add_noise_y(x, y, grain); + } + + // Special case for doubly-overlapped corner + for (int x = 0; x < xstart; x++) { + // Blend the top pixel with the top left block + int top = sample_lut(grain_lut, offsets, 0, 0, 0, 1, x, y); + int old = sample_lut(grain_lut, offsets, 0, 0, 1, 1, x, y); + top = round2(old * w[x][0] + top * w[x][1], 5); + top = iclip(top, grain_min, grain_max); + + // Blend the current pixel with the left block + int grain = sample_lut(grain_lut, offsets, 0, 0, 0, 0, x, y); + old = sample_lut(grain_lut, offsets, 0, 0, 1, 0, x, y); + grain = round2(old * w[x][0] + grain * w[x][1], 5); + grain = iclip(grain, grain_min, grain_max); + + // Mix the row rows together and apply grain + grain = round2(top * w[y][0] + grain * w[y][1], 5); + grain = iclip(grain, grain_min, grain_max); + add_noise_y(x, y, grain); + } + } + } +} + +static NOINLINE void +fguv_32x32xn_c(pixel *const dst_row, const pixel *const src_row, + const ptrdiff_t stride, const Dav1dFilmGrainData *const data, + const size_t pw, const uint8_t scaling[SCALING_SIZE], + const entry grain_lut[][GRAIN_WIDTH], const int bh, + const int row_num, const pixel *const luma_row, + const ptrdiff_t luma_stride, const int uv, const int is_id, + const int sx, const int sy HIGHBD_DECL_SUFFIX) +{ + const int rows = 1 + (data->overlap_flag && row_num > 0); + const int bitdepth_min_8 = bitdepth_from_max(bitdepth_max) - 8; + const int grain_ctr = 128 << bitdepth_min_8; + const int grain_min = -grain_ctr, grain_max = grain_ctr - 1; + + int min_value, max_value; + if (data->clip_to_restricted_range) { + min_value = 16 << bitdepth_min_8; + max_value = (is_id ? 235 : 240) << bitdepth_min_8; + } else { + min_value = 0; + max_value = BITDEPTH_MAX; + } + + // seed[0] contains the current row, seed[1] contains the previous + unsigned seed[2]; + for (int i = 0; i < rows; i++) { + seed[i] = data->seed; + seed[i] ^= (((row_num - i) * 37 + 178) & 0xFF) << 8; + seed[i] ^= (((row_num - i) * 173 + 105) & 0xFF); + } + + assert(stride % (BLOCK_SIZE * sizeof(pixel)) == 0); + + int offsets[2 /* col offset */][2 /* row offset */]; + + // process this row in BLOCK_SIZE^2 blocks (subsampled) + for (unsigned bx = 0; bx < pw; bx += BLOCK_SIZE >> sx) { + const int bw = imin(BLOCK_SIZE >> sx, (int)(pw - bx)); + if (data->overlap_flag && bx) { + // shift previous offsets left + for (int i = 0; i < rows; i++) + offsets[1][i] = offsets[0][i]; + } + + // update current offsets + for (int i = 0; i < rows; i++) + offsets[0][i] = get_random_number(8, &seed[i]); + + // x/y block offsets to compensate for overlapped regions + const int ystart = data->overlap_flag && row_num ? imin(2 >> sy, bh) : 0; + const int xstart = data->overlap_flag && bx ? imin(2 >> sx, bw) : 0; + + static const int w[2 /* sub */][2 /* off */][2] = { + { { 27, 17 }, { 17, 27 } }, + { { 23, 22 } }, + }; + +#define add_noise_uv(x, y, grain) \ + const int lx = (bx + x) << sx; \ + const int ly = y << sy; \ + const pixel *const luma = luma_row + ly * PXSTRIDE(luma_stride) + lx; \ + pixel avg = luma[0]; \ + if (sx) \ + avg = (avg + luma[1] + 1) >> 1; \ + const pixel *const src = src_row + (y) * PXSTRIDE(stride) + (bx + (x)); \ + pixel *const dst = dst_row + (y) * PXSTRIDE(stride) + (bx + (x)); \ + int val = avg; \ + if (!data->chroma_scaling_from_luma) { \ + const int combined = avg * data->uv_luma_mult[uv] + \ + *src * data->uv_mult[uv]; \ + val = iclip_pixel( (combined >> 6) + \ + (data->uv_offset[uv] * (1 << bitdepth_min_8)) ); \ + } \ + const int noise = round2(scaling[ val ] * (grain), data->scaling_shift); \ + *dst = iclip(*src + noise, min_value, max_value); + + for (int y = ystart; y < bh; y++) { + // Non-overlapped image region (straightforward) + for (int x = xstart; x < bw; x++) { + int grain = sample_lut(grain_lut, offsets, sx, sy, 0, 0, x, y); + add_noise_uv(x, y, grain); + } + + // Special case for overlapped column + for (int x = 0; x < xstart; x++) { + int grain = sample_lut(grain_lut, offsets, sx, sy, 0, 0, x, y); + int old = sample_lut(grain_lut, offsets, sx, sy, 1, 0, x, y); + grain = round2(old * w[sx][x][0] + grain * w[sx][x][1], 5); + grain = iclip(grain, grain_min, grain_max); + add_noise_uv(x, y, grain); + } + } + + for (int y = 0; y < ystart; y++) { + // Special case for overlapped row (sans corner) + for (int x = xstart; x < bw; x++) { + int grain = sample_lut(grain_lut, offsets, sx, sy, 0, 0, x, y); + int old = sample_lut(grain_lut, offsets, sx, sy, 0, 1, x, y); + grain = round2(old * w[sy][y][0] + grain * w[sy][y][1], 5); + grain = iclip(grain, grain_min, grain_max); + add_noise_uv(x, y, grain); + } + + // Special case for doubly-overlapped corner + for (int x = 0; x < xstart; x++) { + // Blend the top pixel with the top left block + int top = sample_lut(grain_lut, offsets, sx, sy, 0, 1, x, y); + int old = sample_lut(grain_lut, offsets, sx, sy, 1, 1, x, y); + top = round2(old * w[sx][x][0] + top * w[sx][x][1], 5); + top = iclip(top, grain_min, grain_max); + + // Blend the current pixel with the left block + int grain = sample_lut(grain_lut, offsets, sx, sy, 0, 0, x, y); + old = sample_lut(grain_lut, offsets, sx, sy, 1, 0, x, y); + grain = round2(old * w[sx][x][0] + grain * w[sx][x][1], 5); + grain = iclip(grain, grain_min, grain_max); + + // Mix the row rows together and apply to image + grain = round2(top * w[sy][y][0] + grain * w[sy][y][1], 5); + grain = iclip(grain, grain_min, grain_max); + add_noise_uv(x, y, grain); + } + } + } +} + +#define fguv_ss_fn(nm, ss_x, ss_y) \ +static decl_fguv_32x32xn_fn(fguv_32x32xn_##nm##_c) { \ + fguv_32x32xn_c(dst_row, src_row, stride, data, pw, scaling, grain_lut, bh, \ + row_num, luma_row, luma_stride, uv_pl, is_id, ss_x, ss_y \ + HIGHBD_TAIL_SUFFIX); \ +} + +fguv_ss_fn(420, 1, 1); +fguv_ss_fn(422, 1, 0); +fguv_ss_fn(444, 0, 0); + +#if HAVE_ASM +#if ARCH_AARCH64 || ARCH_ARM +#include "src/arm/filmgrain.h" +#elif ARCH_X86 +#include "src/x86/filmgrain.h" +#endif +#endif + +COLD void bitfn(dav1d_film_grain_dsp_init)(Dav1dFilmGrainDSPContext *const c) { + c->generate_grain_y = generate_grain_y_c; + c->generate_grain_uv[DAV1D_PIXEL_LAYOUT_I420 - 1] = generate_grain_uv_420_c; + c->generate_grain_uv[DAV1D_PIXEL_LAYOUT_I422 - 1] = generate_grain_uv_422_c; + c->generate_grain_uv[DAV1D_PIXEL_LAYOUT_I444 - 1] = generate_grain_uv_444_c; + + c->fgy_32x32xn = fgy_32x32xn_c; + c->fguv_32x32xn[DAV1D_PIXEL_LAYOUT_I420 - 1] = fguv_32x32xn_420_c; + c->fguv_32x32xn[DAV1D_PIXEL_LAYOUT_I422 - 1] = fguv_32x32xn_422_c; + c->fguv_32x32xn[DAV1D_PIXEL_LAYOUT_I444 - 1] = fguv_32x32xn_444_c; + +#if HAVE_ASM +#if ARCH_AARCH64 || ARCH_ARM + film_grain_dsp_init_arm(c); +#elif ARCH_X86 + film_grain_dsp_init_x86(c); +#endif +#endif +} |