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236 lines
6.6 KiB
236 lines
6.6 KiB
/* |
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* Bayer-to-RGB/YV12 template |
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* Copyright (c) 2011-2014 Peter Ross <pross@xvid.org> |
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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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#if defined(BAYER_BGGR) || defined(BAYER_GBRG) |
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#define BAYER_R 0 |
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#define BAYER_G 1 |
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#define BAYER_B 2 |
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#endif |
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#if defined(BAYER_RGGB) || defined(BAYER_GRBG) |
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#define BAYER_R 2 |
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#define BAYER_G 1 |
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#define BAYER_B 0 |
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#endif |
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#if defined(BAYER_8) |
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#define BAYER_READ(x) (x) |
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#define BAYER_SIZEOF 1 |
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#define BAYER_SHIFT 0 |
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#endif |
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#if defined(BAYER_16LE) |
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#define BAYER_READ(x) AV_RL16(&(x)) |
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#define BAYER_SIZEOF 2 |
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#define BAYER_SHIFT 8 |
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#endif |
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#if defined(BAYER_16BE) |
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#define BAYER_READ(x) AV_RB16(&(x)) |
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#define BAYER_SIZEOF 2 |
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#define BAYER_SHIFT 8 |
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#endif |
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#define S(y, x) BAYER_READ(src[(y)*src_stride + BAYER_SIZEOF*(x)]) |
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#define T(y, x) (unsigned int)S(y, x) |
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#define R(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_R] |
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#define G(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_G] |
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#define B(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_B] |
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#if defined(BAYER_BGGR) || defined(BAYER_RGGB) |
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#define BAYER_TO_RGB24_COPY \ |
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R(0, 0) = \ |
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R(0, 1) = \ |
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R(1, 1) = \ |
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R(1, 0) = S(1, 1) >> BAYER_SHIFT; \ |
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\ |
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G(0, 1) = S(0, 1) >> BAYER_SHIFT; \ |
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G(0, 0) = \ |
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G(1, 1) = (T(0, 1) + T(1, 0)) >> (1 + BAYER_SHIFT); \ |
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G(1, 0) = S(1, 0) >> BAYER_SHIFT; \ |
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\ |
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B(1, 1) = \ |
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B(0, 0) = \ |
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B(0, 1) = \ |
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B(1, 0) = S(0, 0) >> BAYER_SHIFT; |
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#define BAYER_TO_RGB24_INTERPOLATE \ |
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R(0, 0) = (T(-1, -1) + T(-1, 1) + T(1, -1) + T(1, 1)) >> (2 + BAYER_SHIFT); \ |
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G(0, 0) = (T(-1, 0) + T( 0, -1) + T(0, 1) + T(1, 0)) >> (2 + BAYER_SHIFT); \ |
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B(0, 0) = S(0, 0) >> BAYER_SHIFT; \ |
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\ |
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R(0, 1) = (T(-1, 1) + T(1, 1)) >> (1 + BAYER_SHIFT); \ |
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G(0, 1) = S(0, 1) >> BAYER_SHIFT; \ |
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B(0, 1) = (T(0, 0) + T(0, 2)) >> (1 + BAYER_SHIFT); \ |
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\ |
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R(1, 0) = (T(1, -1) + T(1, 1)) >> (1 + BAYER_SHIFT); \ |
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G(1, 0) = S(1, 0) >> BAYER_SHIFT; \ |
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B(1, 0) = (T(0, 0) + T(2, 0)) >> (1 + BAYER_SHIFT); \ |
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\ |
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R(1, 1) = S(1, 1) >> BAYER_SHIFT; \ |
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G(1, 1) = (T(0, 1) + T(1, 0) + T(1, 2) + T(2, 1)) >> (2 + BAYER_SHIFT); \ |
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B(1, 1) = (T(0, 0) + T(0, 2) + T(2, 0) + T(2, 2)) >> (2 + BAYER_SHIFT); |
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#else |
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#define BAYER_TO_RGB24_COPY \ |
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R(0, 0) = \ |
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R(0, 1) = \ |
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R(1, 1) = \ |
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R(1, 0) = S(1, 0) >> BAYER_SHIFT; \ |
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\ |
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G(0, 0) = S(0, 0) >> BAYER_SHIFT; \ |
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G(1, 1) = S(1, 1) >> BAYER_SHIFT; \ |
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G(0, 1) = \ |
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G(1, 0) = (T(0, 0) + T(1, 1)) >> (1 + BAYER_SHIFT); \ |
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\ |
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B(1, 1) = \ |
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B(0, 0) = \ |
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B(0, 1) = \ |
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B(1, 0) = S(0, 1) >> BAYER_SHIFT; |
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#define BAYER_TO_RGB24_INTERPOLATE \ |
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R(0, 0) = (T(-1, 0) + T(1, 0)) >> (1 + BAYER_SHIFT); \ |
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G(0, 0) = S(0, 0) >> BAYER_SHIFT; \ |
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B(0, 0) = (T(0, -1) + T(0, 1)) >> (1 + BAYER_SHIFT); \ |
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\ |
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R(0, 1) = (T(-1, 0) + T(-1, 2) + T(1, 0) + T(1, 2)) >> (2 + BAYER_SHIFT); \ |
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G(0, 1) = (T(-1, 1) + T(0, 0) + T(0, 2) + T(1, 1)) >> (2 + BAYER_SHIFT); \ |
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B(0, 1) = S(0, 1) >> BAYER_SHIFT; \ |
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\ |
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R(1, 0) = S(1, 0) >> BAYER_SHIFT; \ |
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G(1, 0) = (T(0, 0) + T(1, -1) + T(1, 1) + T(2, 0)) >> (2 + BAYER_SHIFT); \ |
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B(1, 0) = (T(0, -1) + T(0, 1) + T(2, -1) + T(2, 1)) >> (2 + BAYER_SHIFT); \ |
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\ |
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R(1, 1) = (T(1, 0) + T(1, 2)) >> (1 + BAYER_SHIFT); \ |
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G(1, 1) = S(1, 1) >> BAYER_SHIFT; \ |
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B(1, 1) = (T(0, 1) + T(2, 1)) >> (1 + BAYER_SHIFT); |
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#endif |
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/** |
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* invoke ff_rgb24toyv12 for 2x2 pixels |
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*/ |
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#define rgb24toyv12_2x2(src, dstY, dstU, dstV, luma_stride, src_stride, rgb2yuv) \ |
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ff_rgb24toyv12(src, dstY, dstV, dstU, 2, 2, luma_stride, 0, src_stride, rgb2yuv) |
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static void BAYER_RENAME(rgb24_copy)(const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width) |
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{ |
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int i; |
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for (i = 0 ; i < width; i+= 2) { |
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BAYER_TO_RGB24_COPY |
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src += 2 * BAYER_SIZEOF; |
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dst += 6; |
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} |
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} |
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static void BAYER_RENAME(rgb24_interpolate)(const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width) |
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{ |
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int i; |
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BAYER_TO_RGB24_COPY |
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src += 2 * BAYER_SIZEOF; |
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dst += 6; |
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for (i = 2 ; i < width - 2; i+= 2) { |
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BAYER_TO_RGB24_INTERPOLATE |
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src += 2 * BAYER_SIZEOF; |
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dst += 6; |
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} |
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if (width > 2) { |
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BAYER_TO_RGB24_COPY |
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} |
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} |
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static void BAYER_RENAME(yv12_copy)(const uint8_t *src, int src_stride, uint8_t *dstY, uint8_t *dstU, uint8_t *dstV, int luma_stride, int width, int32_t *rgb2yuv) |
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{ |
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uint8_t dst[12]; |
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const int dst_stride = 6; |
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int i; |
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for (i = 0 ; i < width; i+= 2) { |
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BAYER_TO_RGB24_COPY |
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rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv); |
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src += 2 * BAYER_SIZEOF; |
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dstY += 2; |
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dstU++; |
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dstV++; |
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} |
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} |
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static void BAYER_RENAME(yv12_interpolate)(const uint8_t *src, int src_stride, uint8_t *dstY, uint8_t *dstU, uint8_t *dstV, int luma_stride, int width, int32_t *rgb2yuv) |
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{ |
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uint8_t dst[12]; |
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const int dst_stride = 6; |
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int i; |
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BAYER_TO_RGB24_COPY |
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rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv); |
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src += 2 * BAYER_SIZEOF; |
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dstY += 2; |
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dstU++; |
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dstV++; |
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for (i = 2 ; i < width - 2; i+= 2) { |
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BAYER_TO_RGB24_INTERPOLATE |
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rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv); |
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src += 2 * BAYER_SIZEOF; |
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dstY += 2; |
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dstU++; |
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dstV++; |
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} |
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if (width > 2) { |
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BAYER_TO_RGB24_COPY |
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rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv); |
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} |
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} |
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#undef S |
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#undef T |
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#undef R |
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#undef G |
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#undef B |
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#undef BAYER_TO_RGB24_COPY |
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#undef BAYER_TO_RGB24_INTERPOLATE |
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#undef BAYER_RENAME |
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#undef BAYER_R |
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#undef BAYER_G |
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#undef BAYER_B |
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#undef BAYER_READ |
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#undef BAYER_SIZEOF |
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#undef BAYER_SHIFT |
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#if defined(BAYER_BGGR) |
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#undef BAYER_BGGR |
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#endif |
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#if defined(BAYER_RGGB) |
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#undef BAYER_RGGB |
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#endif |
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#if defined(BAYER_GBRG) |
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#undef BAYER_GBRG |
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#endif |
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#if defined(BAYER_GRBG) |
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#undef BAYER_GRBG |
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#endif |
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#if defined(BAYER_8) |
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#undef BAYER_8 |
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#endif |
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#if defined(BAYER_16LE) |
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#undef BAYER_16LE |
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#endif |
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#if defined(BAYER_16BE) |
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#undef BAYER_16BE |
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#endif
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