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- /*
- * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #include "libavutil/avassert.h"
- #undef avg
- #undef ss
- #if SS_W == 0
- #define ss 444
- #define avg(a,b,c,d) (a)
- #elif SS_H == 0
- #define ss 422
- #define avg(a,b,c,d) (((a) + (b) + 1) >> 1)
- #else
- #define ss 420
- #define avg(a,b,c,d) (((a) + (b) + (c) + (d) + 2) >> 2)
- #endif
- #undef fn
- #undef fn2
- #undef fn3
- #define fn3(a,b,c) a##_##c##p##b##_c
- #define fn2(a,b,c) fn3(a,b,c)
- #define fn(a) fn2(a, BIT_DEPTH, ss)
- #undef pixel
- #undef av_clip_pixel
- #if BIT_DEPTH == 8
- #define pixel uint8_t
- #define av_clip_pixel(x) av_clip_uint8(x)
- #else
- #define pixel uint16_t
- #define av_clip_pixel(x) av_clip_uintp2(x, BIT_DEPTH)
- #endif
- static void fn(yuv2rgb)(int16_t *rgb[3], ptrdiff_t rgb_stride,
- uint8_t *_yuv[3], const ptrdiff_t yuv_stride[3],
- int w, int h, const int16_t yuv2rgb_coeffs[3][3][8],
- const int16_t yuv_offset[8])
- {
- pixel **yuv = (pixel **) _yuv;
- const pixel *yuv0 = yuv[0], *yuv1 = yuv[1], *yuv2 = yuv[2];
- int16_t *rgb0 = rgb[0], *rgb1 = rgb[1], *rgb2 = rgb[2];
- int y, x;
- int cy = yuv2rgb_coeffs[0][0][0];
- int crv = yuv2rgb_coeffs[0][2][0];
- int cgu = yuv2rgb_coeffs[1][1][0];
- int cgv = yuv2rgb_coeffs[1][2][0];
- int cbu = yuv2rgb_coeffs[2][1][0];
- const int sh = BIT_DEPTH - 1, rnd = 1 << (sh - 1);
- const int uv_offset = 128 << (BIT_DEPTH - 8);
- av_assert2(yuv2rgb_coeffs[0][1][0] == 0);
- av_assert2(yuv2rgb_coeffs[2][2][0] == 0);
- av_assert2(yuv2rgb_coeffs[1][0][0] == cy && yuv2rgb_coeffs[2][0][0] == cy);
- w = AV_CEIL_RSHIFT(w, SS_W);
- h = AV_CEIL_RSHIFT(h, SS_H);
- for (y = 0; y < h; y++) {
- for (x = 0; x < w; x++) {
- int y00 = yuv0[x << SS_W] - yuv_offset[0];
- #if SS_W == 1
- int y01 = yuv0[2 * x + 1] - yuv_offset[0];
- #if SS_H == 1
- int y10 = yuv0[yuv_stride[0] / sizeof(pixel) + 2 * x] - yuv_offset[0];
- int y11 = yuv0[yuv_stride[0] / sizeof(pixel) + 2 * x + 1] - yuv_offset[0];
- #endif
- #endif
- int u = yuv1[x] - uv_offset, v = yuv2[x] - uv_offset;
- rgb0[x << SS_W] = av_clip_int16((y00 * cy + crv * v + rnd) >> sh);
- #if SS_W == 1
- rgb0[2 * x + 1] = av_clip_int16((y01 * cy + crv * v + rnd) >> sh);
- #if SS_H == 1
- rgb0[2 * x + rgb_stride] = av_clip_int16((y10 * cy + crv * v + rnd) >> sh);
- rgb0[2 * x + rgb_stride + 1] = av_clip_int16((y11 * cy + crv * v + rnd) >> sh);
- #endif
- #endif
- rgb1[x << SS_W] = av_clip_int16((y00 * cy + cgu * u +
- cgv * v + rnd) >> sh);
- #if SS_W == 1
- rgb1[2 * x + 1] = av_clip_int16((y01 * cy + cgu * u +
- cgv * v + rnd) >> sh);
- #if SS_H == 1
- rgb1[2 * x + rgb_stride] = av_clip_int16((y10 * cy + cgu * u +
- cgv * v + rnd) >> sh);
- rgb1[2 * x + rgb_stride + 1] = av_clip_int16((y11 * cy + cgu * u +
- cgv * v + rnd) >> sh);
- #endif
- #endif
- rgb2[x << SS_W] = av_clip_int16((y00 * cy + cbu * u + rnd) >> sh);
- #if SS_W == 1
- rgb2[2 * x + 1] = av_clip_int16((y01 * cy + cbu * u + rnd) >> sh);
- #if SS_H == 1
- rgb2[2 * x + rgb_stride] = av_clip_int16((y10 * cy + cbu * u + rnd) >> sh);
- rgb2[2 * x + rgb_stride + 1] = av_clip_int16((y11 * cy + cbu * u + rnd) >> sh);
- #endif
- #endif
- }
- yuv0 += (yuv_stride[0] * (1 << SS_H)) / sizeof(pixel);
- yuv1 += yuv_stride[1] / sizeof(pixel);
- yuv2 += yuv_stride[2] / sizeof(pixel);
- rgb0 += rgb_stride * (1 << SS_H);
- rgb1 += rgb_stride * (1 << SS_H);
- rgb2 += rgb_stride * (1 << SS_H);
- }
- }
- static void fn(rgb2yuv)(uint8_t *_yuv[3], const ptrdiff_t yuv_stride[3],
- int16_t *rgb[3], ptrdiff_t s,
- int w, int h, const int16_t rgb2yuv_coeffs[3][3][8],
- const int16_t yuv_offset[8])
- {
- pixel **yuv = (pixel **) _yuv;
- pixel *yuv0 = yuv[0], *yuv1 = yuv[1], *yuv2 = yuv[2];
- const int16_t *rgb0 = rgb[0], *rgb1 = rgb[1], *rgb2 = rgb[2];
- int y, x;
- const int sh = 29 - BIT_DEPTH;
- const int rnd = 1 << (sh - 1);
- int cry = rgb2yuv_coeffs[0][0][0];
- int cgy = rgb2yuv_coeffs[0][1][0];
- int cby = rgb2yuv_coeffs[0][2][0];
- int cru = rgb2yuv_coeffs[1][0][0];
- int cgu = rgb2yuv_coeffs[1][1][0];
- int cburv = rgb2yuv_coeffs[1][2][0];
- int cgv = rgb2yuv_coeffs[2][1][0];
- int cbv = rgb2yuv_coeffs[2][2][0];
- ptrdiff_t s0 = yuv_stride[0] / sizeof(pixel);
- const int uv_offset = 128 << (BIT_DEPTH - 8);
- av_assert2(rgb2yuv_coeffs[1][2][0] == rgb2yuv_coeffs[2][0][0]);
- w = AV_CEIL_RSHIFT(w, SS_W);
- h = AV_CEIL_RSHIFT(h, SS_H);
- for (y = 0; y < h; y++) {
- for (x = 0; x < w; x++) {
- int r00 = rgb0[x << SS_W], g00 = rgb1[x << SS_W], b00 = rgb2[x << SS_W];
- #if SS_W == 1
- int r01 = rgb0[x * 2 + 1], g01 = rgb1[x * 2 + 1], b01 = rgb2[x * 2 + 1];
- #if SS_H == 1
- int r10 = rgb0[x * 2 + 0 + s], g10 = rgb1[x * 2 + 0 + s], b10 = rgb2[x * 2 + 0 + s];
- int r11 = rgb0[x * 2 + 1 + s], g11 = rgb1[x * 2 + 1 + s], b11 = rgb2[x * 2 + 1 + s];
- #endif
- #endif
- yuv0[x << SS_W] = av_clip_pixel(yuv_offset[0] +
- ((r00 * cry + g00 * cgy +
- b00 * cby + rnd) >> sh));
- #if SS_W == 1
- yuv0[x * 2 + 1] = av_clip_pixel(yuv_offset[0] +
- ((r01 * cry + g01 * cgy +
- b01 * cby + rnd) >> sh));
- #if SS_H == 1
- yuv0[x * 2 + 0 + s0] = av_clip_pixel(yuv_offset[0] +
- ((r10 * cry + g10 * cgy +
- b10 * cby + rnd) >> sh));
- yuv0[x * 2 + 1 + s0] = av_clip_pixel(yuv_offset[0] +
- ((r11 * cry + g11 * cgy +
- b11 * cby + rnd) >> sh));
- #endif
- #endif
- yuv1[x] = av_clip_pixel(uv_offset +
- ((avg(r00, r01, r10, r11) * cru +
- avg(g00, g01, g10, g11) * cgu +
- avg(b00, b01, b10, b11) * cburv + rnd) >> sh));
- yuv2[x] = av_clip_pixel(uv_offset +
- ((avg(r00, r01, r10, r11) * cburv +
- avg(g00, g01, g10, g11) * cgv +
- avg(b00, b01, b10, b11) * cbv + rnd) >> sh));
- }
- yuv0 += s0 * (1 << SS_H);
- yuv1 += yuv_stride[1] / sizeof(pixel);
- yuv2 += yuv_stride[2] / sizeof(pixel);
- rgb0 += s * (1 << SS_H);
- rgb1 += s * (1 << SS_H);
- rgb2 += s * (1 << SS_H);
- }
- }
- /* floyd-steinberg dithering - for any mid-top pixel A in a 3x2 block of pixels:
- * 1 A 2
- * 3 4 5
- * the rounding error is distributed over the neighbouring pixels:
- * 2: 7/16th, 3: 3/16th, 4: 5/16th and 5: 1/16th
- */
- static void fn(rgb2yuv_fsb)(uint8_t *_yuv[3], const ptrdiff_t yuv_stride[3],
- int16_t *rgb[3], ptrdiff_t s,
- int w, int h, const int16_t rgb2yuv_coeffs[3][3][8],
- const int16_t yuv_offset[8],
- int *rnd_scratch[3][2])
- {
- pixel **yuv = (pixel **) _yuv;
- pixel *yuv0 = yuv[0], *yuv1 = yuv[1], *yuv2 = yuv[2];
- const int16_t *rgb0 = rgb[0], *rgb1 = rgb[1], *rgb2 = rgb[2];
- int y, x;
- const int sh = 29 - BIT_DEPTH;
- const int rnd = 1 << (sh - 1);
- int cry = rgb2yuv_coeffs[0][0][0];
- int cgy = rgb2yuv_coeffs[0][1][0];
- int cby = rgb2yuv_coeffs[0][2][0];
- int cru = rgb2yuv_coeffs[1][0][0];
- int cgu = rgb2yuv_coeffs[1][1][0];
- int cburv = rgb2yuv_coeffs[1][2][0];
- int cgv = rgb2yuv_coeffs[2][1][0];
- int cbv = rgb2yuv_coeffs[2][2][0];
- ptrdiff_t s0 = yuv_stride[0] / sizeof(pixel);
- const int uv_offset = 128 << (BIT_DEPTH - 8);
- unsigned mask = (1 << sh) - 1;
- for (x = 0; x < w; x++) {
- rnd_scratch[0][0][x] =
- rnd_scratch[0][1][x] = rnd;
- }
- av_assert2(rgb2yuv_coeffs[1][2][0] == rgb2yuv_coeffs[2][0][0]);
- w = AV_CEIL_RSHIFT(w, SS_W);
- h = AV_CEIL_RSHIFT(h, SS_H);
- for (x = 0; x < w; x++) {
- rnd_scratch[1][0][x] =
- rnd_scratch[1][1][x] =
- rnd_scratch[2][0][x] =
- rnd_scratch[2][1][x] = rnd;
- }
- for (y = 0; y < h; y++) {
- for (x = 0; x < w; x++) {
- int r00 = rgb0[x << SS_W], g00 = rgb1[x << SS_W], b00 = rgb2[x << SS_W];
- int y00;
- #if SS_W == 1
- int r01 = rgb0[x * 2 + 1], g01 = rgb1[x * 2 + 1], b01 = rgb2[x * 2 + 1];
- int y01;
- #if SS_H == 1
- int r10 = rgb0[x * 2 + 0 + s], g10 = rgb1[x * 2 + 0 + s], b10 = rgb2[x * 2 + 0 + s];
- int r11 = rgb0[x * 2 + 1 + s], g11 = rgb1[x * 2 + 1 + s], b11 = rgb2[x * 2 + 1 + s];
- int y10, y11;
- #endif
- #endif
- int u, v, diff;
- y00 = r00 * cry + g00 * cgy + b00 * cby + rnd_scratch[0][y & !SS_H][x << SS_W];
- diff = (y00 & mask) - rnd;
- yuv0[x << SS_W] = av_clip_pixel(yuv_offset[0] + (y00 >> sh));
- rnd_scratch[0][ (y & !SS_H)][(x << SS_W) + 1] += (diff * 7 + 8) >> 4;
- rnd_scratch[0][!(y & !SS_H)][(x << SS_W) - 1] += (diff * 3 + 8) >> 4;
- rnd_scratch[0][!(y & !SS_H)][(x << SS_W) + 0] += (diff * 5 + 8) >> 4;
- rnd_scratch[0][!(y & !SS_H)][(x << SS_W) + 1] += (diff * 1 + 8) >> 4;
- rnd_scratch[0][ (y & !SS_H)][(x << SS_W) + 0] = rnd;
- #if SS_W == 1
- y01 = r01 * cry + g01 * cgy + b01 * cby + rnd_scratch[0][y & !SS_H][x * 2 + 1];
- diff = (y01 & mask) - rnd;
- yuv0[x * 2 + 1] = av_clip_pixel(yuv_offset[0] + (y01 >> sh));
- rnd_scratch[0][ (y & !SS_H)][x * 2 + 2] += (diff * 7 + 8) >> 4;
- rnd_scratch[0][!(y & !SS_H)][x * 2 + 0] += (diff * 3 + 8) >> 4;
- rnd_scratch[0][!(y & !SS_H)][x * 2 + 1] += (diff * 5 + 8) >> 4;
- rnd_scratch[0][!(y & !SS_H)][x * 2 + 2] += (diff * 1 + 8) >> 4;
- rnd_scratch[0][ (y & !SS_H)][x * 2 + 1] = rnd;
- #if SS_H == 1
- y10 = r10 * cry + g10 * cgy + b10 * cby + rnd_scratch[0][1][x * 2 + 0];
- diff = (y10 & mask) - rnd;
- yuv0[x * 2 + 0 + s0] = av_clip_pixel(yuv_offset[0] + (y10 >> sh));
- rnd_scratch[0][1][x * 2 + 1] += (diff * 7 + 8) >> 4;
- rnd_scratch[0][0][x * 2 - 1] += (diff * 3 + 8) >> 4;
- rnd_scratch[0][0][x * 2 + 0] += (diff * 5 + 8) >> 4;
- rnd_scratch[0][0][x * 2 + 1] += (diff * 1 + 8) >> 4;
- rnd_scratch[0][1][x * 2 + 0] = rnd;
- y11 = r11 * cry + g11 * cgy + b11 * cby + rnd_scratch[0][1][x * 2 + 1];
- diff = (y11 & mask) - rnd;
- yuv0[x * 2 + 1 + s0] = av_clip_pixel(yuv_offset[0] + (y11 >> sh));
- rnd_scratch[0][1][x * 2 + 2] += (diff * 7 + 8) >> 4;
- rnd_scratch[0][0][x * 2 + 0] += (diff * 3 + 8) >> 4;
- rnd_scratch[0][0][x * 2 + 1] += (diff * 5 + 8) >> 4;
- rnd_scratch[0][0][x * 2 + 2] += (diff * 1 + 8) >> 4;
- rnd_scratch[0][1][x * 2 + 1] = rnd;
- #endif
- #endif
- u = avg(r00, r01, r10, r11) * cru +
- avg(g00, g01, g10, g11) * cgu +
- avg(b00, b01, b10, b11) * cburv + rnd_scratch[1][y & 1][x];
- diff = (u & mask) - rnd;
- yuv1[x] = av_clip_pixel(uv_offset + (u >> sh));
- rnd_scratch[1][ (y & 1)][x + 1] += (diff * 7 + 8) >> 4;
- rnd_scratch[1][!(y & 1)][x - 1] += (diff * 3 + 8) >> 4;
- rnd_scratch[1][!(y & 1)][x + 0] += (diff * 5 + 8) >> 4;
- rnd_scratch[1][!(y & 1)][x + 1] += (diff * 1 + 8) >> 4;
- rnd_scratch[1][ (y & 1)][x + 0] = rnd;
- v = avg(r00, r01, r10, r11) * cburv +
- avg(g00, g01, g10, g11) * cgv +
- avg(b00, b01, b10, b11) * cbv + rnd_scratch[2][y & 1][x];
- diff = (v & mask) - rnd;
- yuv2[x] = av_clip_pixel(uv_offset + (v >> sh));
- rnd_scratch[2][ (y & 1)][x + 1] += (diff * 7 + 8) >> 4;
- rnd_scratch[2][!(y & 1)][x - 1] += (diff * 3 + 8) >> 4;
- rnd_scratch[2][!(y & 1)][x + 0] += (diff * 5 + 8) >> 4;
- rnd_scratch[2][!(y & 1)][x + 1] += (diff * 1 + 8) >> 4;
- rnd_scratch[2][ (y & 1)][x + 0] = rnd;
- }
- yuv0 += s0 * (1 << SS_H);
- yuv1 += yuv_stride[1] / sizeof(pixel);
- yuv2 += yuv_stride[2] / sizeof(pixel);
- rgb0 += s * (1 << SS_H);
- rgb1 += s * (1 << SS_H);
- rgb2 += s * (1 << SS_H);
- }
- }
- #undef IN_BIT_DEPTH
- #undef OUT_BIT_DEPTH
- #define OUT_BIT_DEPTH BIT_DEPTH
- #define IN_BIT_DEPTH 8
- #include "colorspacedsp_yuv2yuv_template.c"
- #undef IN_BIT_DEPTH
- #define IN_BIT_DEPTH 10
- #include "colorspacedsp_yuv2yuv_template.c"
- #undef IN_BIT_DEPTH
- #define IN_BIT_DEPTH 12
- #include "colorspacedsp_yuv2yuv_template.c"
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