avcodec/cfhd: add x86 SIMD

Overall speed changes for 1920x1080, yuv422p10le, 60fps from: 0.19x to 0.343x

1 files changed, 118 insertions, 0 deletions

diff --git a/libavcodec/cfhddsp.c b/libavcodec/cfhddsp.c
new file mode 100644
index 0000000000..4028263f7a
--- /dev/null
+++ b/libavcodec/cfhddsp.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2015-2016 Kieran Kunhya <kieran@kunhya.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/attributes.h"
+#include "libavutil/common.h"
+#include "libavutil/avassert.h"
+
+#include "cfhddsp.h"
+
+static av_always_inline void filter(int16_t *output, ptrdiff_t out_stride,
+                          const int16_t *low, ptrdiff_t low_stride,
+                          const int16_t *high, ptrdiff_t high_stride,
+                          int len, int clip)
+{
+    int16_t tmp;
+    int i;
+
+    tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3;
+    output[(2*0+0)*out_stride] = (tmp + high[0*high_stride]) >> 1;
+    if (clip)
+        output[(2*0+0)*out_stride] = av_clip_uintp2_c(output[(2*0+0)*out_stride], clip);
+
+    tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3;
+    output[(2*0+1)*out_stride] = (tmp - high[0*high_stride]) >> 1;
+    if (clip)
+        output[(2*0+1)*out_stride] = av_clip_uintp2_c(output[(2*0+1)*out_stride], clip);
+
+    for (i = 1; i < len - 1; i++) {
+        tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3;
+        output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1;
+        if (clip)
+            output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
+
+        tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3;
+        output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1;
+        if (clip)
+            output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
+    }
+
+    tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3;
+    output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1;
+    if (clip)
+        output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
+
+    tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3;
+    output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1;
+    if (clip)
+        output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
+}
+
+static void vert_filter(int16_t *output, ptrdiff_t out_stride,
+                        const int16_t *low, ptrdiff_t low_stride,
+                        const int16_t *high, ptrdiff_t high_stride,
+                        int width, int height)
+{
+    for (int i = 0; i < width; i++) {
+        filter(output, out_stride, low, low_stride, high, high_stride, height, 0);
+        low++;
+        high++;
+        output++;
+    }
+}
+
+static void horiz_filter(int16_t *output, ptrdiff_t ostride,
+                         const int16_t *low, ptrdiff_t lstride,
+                         const int16_t *high, ptrdiff_t hstride,
+                         int width, int height)
+{
+    for (int i = 0; i < height; i++) {
+        filter(output, 1, low, 1, high, 1, width, 0);
+        low    += lstride;
+        high   += hstride;
+        output += ostride * 2;
+    }
+}
+
+static void horiz_filter_clip(int16_t *output, const int16_t *low, const int16_t *high,
+                              int width, int clip)
+{
+    filter(output, 1, low, 1, high, 1, width, clip);
+}
+
+static void horiz_filter_clip_bayer(int16_t *output, const int16_t *low, const int16_t *high,
+                                    int width, int clip)
+{
+    filter(output, 2, low, 1, high, 1, width, clip);
+}
+
+av_cold void ff_cfhddsp_init(CFHDDSPContext *c, int depth, int bayer)
+{
+    c->horiz_filter = horiz_filter;
+    c->vert_filter = vert_filter;
+
+    if (bayer)
+        c->horiz_filter_clip = horiz_filter_clip_bayer;
+    else
+        c->horiz_filter_clip = horiz_filter_clip;
+
+    if (ARCH_X86)
+        ff_cfhddsp_init_x86(c, depth, bayer);
+}