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Diffstat (limited to 'libswscale/bayer_template.c')
| -rw-r--r-- | libswscale/bayer_template.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/libswscale/bayer_template.c b/libswscale/bayer_template.c new file mode 100644 index 0000000000..67ab2aee09 --- /dev/null +++ b/libswscale/bayer_template.c @@ -0,0 +1,236 @@ +/* + * Bayer-to-RGB/YV12 template + * Copyright (c) 2011-2014 Peter Ross <pross@xvid.org> + * + * 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 + */ + +#if defined(BAYER_BGGR) || defined(BAYER_GBRG) +#define BAYER_R 0 +#define BAYER_G 1 +#define BAYER_B 2 +#endif +#if defined(BAYER_RGGB) || defined(BAYER_GRBG) +#define BAYER_R 2 +#define BAYER_G 1 +#define BAYER_B 0 +#endif + +#if defined(BAYER_8) +#define BAYER_READ(x) (x) +#define BAYER_SIZEOF 1 +#define BAYER_SHIFT 0 +#endif +#if defined(BAYER_16LE) +#define BAYER_READ(x) AV_RL16(&x) +#define BAYER_SIZEOF 2 +#define BAYER_SHIFT 8 +#endif +#if defined(BAYER_16BE) +#define BAYER_READ(x) AV_RB16(&x) +#define BAYER_SIZEOF 2 +#define BAYER_SHIFT 8 +#endif + +#define S(y, x) BAYER_READ(src[(y)*src_stride + BAYER_SIZEOF*(x)]) +#define T(y, x) (unsigned int)S(y, x) +#define R(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_R] +#define G(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_G] +#define B(y, x) dst[(y)*dst_stride + (x)*3 + BAYER_B] + +#if defined(BAYER_BGGR) || defined(BAYER_RGGB) +#define BAYER_TO_RGB24_COPY \ + R(0, 0) = \ + R(0, 1) = \ + R(1, 1) = \ + R(1, 0) = S(1, 1) >> BAYER_SHIFT; \ + \ + G(0, 1) = S(0, 1) >> BAYER_SHIFT; \ + G(0, 0) = \ + G(1, 1) = (T(0, 1) + T(1, 0)) >> (1 + BAYER_SHIFT); \ + G(1, 0) = S(1, 0) >> BAYER_SHIFT; \ + \ + B(1, 1) = \ + B(0, 0) = \ + B(0, 1) = \ + B(1, 0) = S(0, 0) >> BAYER_SHIFT; +#define BAYER_TO_RGB24_INTERPOLATE \ + R(0, 0) = (T(-1, -1) + T(-1, 1) + T(1, -1) + T(1, 1)) >> (2 + BAYER_SHIFT); \ + G(0, 0) = (T(-1, 0) + T( 0, -1) + T(0, 1) + T(1, 0)) >> (2 + BAYER_SHIFT); \ + B(0, 0) = S(0, 0) >> BAYER_SHIFT; \ + \ + R(0, 1) = (T(-1, 1) + T(1, 1)) >> (1 + BAYER_SHIFT); \ + G(0, 1) = S(0, 1) >> BAYER_SHIFT; \ + B(0, 1) = (T(0, 0) + T(0, 2)) >> (1 + BAYER_SHIFT); \ + \ + R(1, 0) = (T(1, -1) + T(1, 1)) >> (1 + BAYER_SHIFT); \ + G(1, 0) = S(1, 0) >> BAYER_SHIFT; \ + B(1, 0) = (T(0, 0) + T(2, 0)) >> (1 + BAYER_SHIFT); \ + \ + R(1, 1) = S(1, 1) >> BAYER_SHIFT; \ + G(1, 1) = (T(0, 1) + T(1, 0) + T(1, 2) + T(2, 1)) >> (2 + BAYER_SHIFT); \ + B(1, 1) = (T(0, 0) + T(0, 2) + T(2, 0) + T(2, 2)) >> (2 + BAYER_SHIFT); +#else +#define BAYER_TO_RGB24_COPY \ + R(0, 0) = \ + R(0, 1) = \ + R(1, 1) = \ + R(1, 0) = S(1, 0) >> BAYER_SHIFT; \ + \ + G(0, 0) = S(0, 0) >> BAYER_SHIFT; \ + G(1, 1) = S(1, 1) >> BAYER_SHIFT; \ + G(0, 1) = \ + G(1, 0) = (T(0, 0) + T(1, 1)) >> (1 + BAYER_SHIFT); \ + \ + B(1, 1) = \ + B(0, 0) = \ + B(0, 1) = \ + B(1, 0) = S(0, 1) >> BAYER_SHIFT; +#define BAYER_TO_RGB24_INTERPOLATE \ + R(0, 0) = (T(-1, 0) + T(1, 0)) >> (1 + BAYER_SHIFT); \ + G(0, 0) = S(0, 0) >> BAYER_SHIFT; \ + B(0, 0) = (T(0, -1) + T(0, 1)) >> (1 + BAYER_SHIFT); \ + \ + R(0, 1) = (T(-1, 0) + T(-1, 2) + T(1, 0) + T(1, 2)) >> (2 + BAYER_SHIFT); \ + G(0, 1) = (T(-1, 1) + T(0, 0) + T(0, 2) + T(1, 1)) >> (2 + BAYER_SHIFT); \ + B(0, 1) = S(0, 1) >> BAYER_SHIFT; \ + \ + R(1, 0) = S(1, 0) >> BAYER_SHIFT; \ + G(1, 0) = (T(0, 0) + T(1, -1) + T(1, 1) + T(2, 0)) >> (2 + BAYER_SHIFT); \ + B(1, 0) = (T(0, -1) + T(0, 1) + T(2, -1) + T(2, 1)) >> (2 + BAYER_SHIFT); \ + \ + R(1, 1) = (T(1, 0) + T(1, 2)) >> (1 + BAYER_SHIFT); \ + G(1, 1) = S(1, 1) >> BAYER_SHIFT; \ + B(1, 1) = (T(0, 1) + T(2, 1)) >> (1 + BAYER_SHIFT); +#endif + +/** + * invoke ff_rgb24toyv12 for 2x2 pixels + */ +#define rgb24toyv12_2x2(src, dstY, dstU, dstV, luma_stride, src_stride, rgb2yuv) \ + ff_rgb24toyv12(src, dstY, dstV, dstU, 2, 2, luma_stride, 0, src_stride, rgb2yuv) + +static void BAYER_RENAME(rgb24_copy)(const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width) +{ + int i; + for (i = 0 ; i < width; i+= 2) { + BAYER_TO_RGB24_COPY + src += 2 * BAYER_SIZEOF; + dst += 6; + } +} + +static void BAYER_RENAME(rgb24_interpolate)(const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int width) +{ + int i; + + BAYER_TO_RGB24_COPY + src += 2 * BAYER_SIZEOF; + dst += 6; + + for (i = 2 ; i < width - 2; i+= 2) { + BAYER_TO_RGB24_INTERPOLATE + src += 2 * BAYER_SIZEOF; + dst += 6; + } + + if (width > 2) { + BAYER_TO_RGB24_COPY + } +} + +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) +{ + uint8_t dst[12]; + const int dst_stride = 6; + int i; + for (i = 0 ; i < width; i+= 2) { + BAYER_TO_RGB24_COPY + rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv); + src += 2 * BAYER_SIZEOF; + dstY += 2; + dstU++; + dstV++; + } +} + +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) +{ + uint8_t dst[12]; + const int dst_stride = 6; + int i; + + BAYER_TO_RGB24_COPY + rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv); + src += 2 * BAYER_SIZEOF; + dstY += 2; + dstU++; + dstV++; + + for (i = 2 ; i < width - 2; i+= 2) { + BAYER_TO_RGB24_INTERPOLATE + rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv); + src += 2 * BAYER_SIZEOF; + dstY += 2; + dstU++; + dstV++; + } + + if (width > 2) { + BAYER_TO_RGB24_COPY + rgb24toyv12_2x2(dst, dstY, dstU, dstV, luma_stride, dst_stride, rgb2yuv); + } +} + +#undef S +#undef T +#undef R +#undef G +#undef B +#undef BAYER_TO_RGB24_COPY +#undef BAYER_TO_RGB24_INTERPOLATE + +#undef BAYER_RENAME + +#undef BAYER_R +#undef BAYER_G +#undef BAYER_B +#undef BAYER_READ +#undef BAYER_SIZEOF +#undef BAYER_SHIFT + +#if defined(BAYER_BGGR) +#undef BAYER_BGGR +#endif +#if defined(BAYER_RGGB) +#undef BAYER_RGGB +#endif +#if defined(BAYER_GBRG) +#undef BAYER_GBRG +#endif +#if defined(BAYER_GRBG) +#undef BAYER_GRBG +#endif +#if defined(BAYER_8) +#undef BAYER_8 +#endif +#if defined(BAYER_16LE) +#undef BAYER_16LE +#endif +#if defined(BAYER_16BE) +#undef BAYER_16BE +#endif |