avfilter: x86: Port gradfun filter optimizations to yasm

Signed-off-by: Diego Biurrun <diego@biurrun.de>

1 files changed, 95 insertions, 0 deletions

diff --git a/libavfilter/x86/vf_gradfun_init.c b/libavfilter/x86/vf_gradfun_init.c
new file mode 100644
index 0000000000..b661a9a1dc
--- /dev/null
+++ b/libavfilter/x86/vf_gradfun_init.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2009 Loren Merritt <lorenm@u.washington.edu>
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/mem.h"
+#include "libavutil/x86/asm.h"
+#include "libavutil/x86/cpu.h"
+#include "libavfilter/gradfun.h"
+
+#if HAVE_YASM
+void ff_gradfun_filter_line_mmxext(intptr_t x, uint8_t *dst, uint8_t *src,
+                                   uint16_t *dc, int thresh,
+                                   const uint16_t *dithers);
+static void gradfun_filter_line_mmxext(uint8_t *dst, uint8_t *src, uint16_t *dc,
+                                       int width, int thresh,
+                                       const uint16_t *dithers)
+{
+    intptr_t x;
+    if (width & 3) {
+        x = width & ~3;
+        ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2, width - x, thresh, dithers);
+        width = x;
+    }
+    x = -width;
+    ff_gradfun_filter_line_mmxext(x, dst + width, src + width, dc + width/2,
+                                  thresh, dithers);
+}
+
+void ff_gradfun_filter_line_ssse3(intptr_t x, uint8_t *dst, uint8_t *src,
+                                  uint16_t *dc, int thresh,
+                                  const uint16_t *dithers);
+static void gradfun_filter_line_ssse3(uint8_t *dst, uint8_t *src, uint16_t *dc, int width, int thresh, const uint16_t *dithers)
+{
+    intptr_t x;
+    if (width & 7) {
+        // could be 10% faster if I somehow eliminated this
+        x = width & ~7;
+        ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2, width - x, thresh, dithers);
+        width = x;
+    }
+    x = -width;
+    ff_gradfun_filter_line_ssse3(x, dst + width, src + width, dc + width/2,
+                                 thresh, dithers);
+}
+
+void ff_gradfun_blur_line_movdqa_sse2(intptr_t x, uint16_t *buf, uint16_t *buf1, uint16_t *dc, uint8_t *src1, uint8_t *src2);
+void ff_gradfun_blur_line_movdqu_sse2(intptr_t x, uint16_t *buf, uint16_t *buf1, uint16_t *dc, uint8_t *src1, uint8_t *src2);
+static void gradfun_blur_line_sse2(uint16_t *dc, uint16_t *buf, uint16_t *buf1, uint8_t *src, int src_linesize, int width)
+{
+    intptr_t x = -2*width;
+    if (((intptr_t) src | src_linesize) & 15) {
+        ff_gradfun_blur_line_movdqu_sse2(x, buf + width, buf1 + width,
+                                         dc + width, src + width * 2,
+                                         src + width * 2 + src_linesize);
+    } else {
+        ff_gradfun_blur_line_movdqa_sse2(x, buf + width, buf1 + width,
+                                         dc + width, src + width * 2,
+                                         src + width * 2 + src_linesize);
+    }
+}
+#endif /* HAVE_YASM */
+
+av_cold void ff_gradfun_init_x86(GradFunContext *gf)
+{
+#if HAVE_YASM
+    int cpu_flags = av_get_cpu_flags();
+
+    if (EXTERNAL_MMXEXT(cpu_flags))
+        gf->filter_line = gradfun_filter_line_mmxext;
+    if (EXTERNAL_SSSE3(cpu_flags))
+        gf->filter_line = gradfun_filter_line_ssse3;
+
+    if (EXTERNAL_SSE2(cpu_flags))
+        gf->blur_line = gradfun_blur_line_sse2;
+#endif /* HAVE_YASM */
+}