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