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-rw-r--r--libswscale/bayer_template.c236
1 files changed, 236 insertions, 0 deletions
diff --git a/libswscale/bayer_template.c b/libswscale/bayer_template.c
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+++ b/libswscale/bayer_template.c
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+/*
+ * 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