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authorNolan L <nol888@gmail.com>2010-12-12 17:59:10 +0000
committerStefano Sabatini <stefano.sabatini-lala@poste.it>2010-12-12 17:59:10 +0000
commitd5f187fd3355ec6d4922d8479930c10d1b6f9ebf (patch)
treec95815e013f51c29f9bb1d2e44a2896d3d3f03b1 /libavfilter/x86
parent9d845ca40cff56c8c0dc04cc76964b0573ef9796 (diff)
downloadffmpeg-streaming-d5f187fd3355ec6d4922d8479930c10d1b6f9ebf.zip
ffmpeg-streaming-d5f187fd3355ec6d4922d8479930c10d1b6f9ebf.tar.gz
Add gradfun filter, ported from MPlayer.
Patch by Nolan L nol888 <=> gmail >=< com. See thread: Subject: [FFmpeg-devel] [PATCH] Port gradfun to libavfilter (GCI) Date: Mon, 29 Nov 2010 07:18:14 -0500 Originally committed as revision 25942 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavfilter/x86')
-rw-r--r--libavfilter/x86/Makefile1
-rw-r--r--libavfilter/x86/gradfun.c162
2 files changed, 163 insertions, 0 deletions
diff --git a/libavfilter/x86/Makefile b/libavfilter/x86/Makefile
index 716048c..e98693d 100644
--- a/libavfilter/x86/Makefile
+++ b/libavfilter/x86/Makefile
@@ -1 +1,2 @@
MMX-OBJS-$(CONFIG_YADIF_FILTER) += x86/yadif.o
+MMX-OBJS-$(CONFIG_GRADFUN_FILTER) += x86/gradfun.o
diff --git a/libavfilter/x86/gradfun.c b/libavfilter/x86/gradfun.c
new file mode 100644
index 0000000..894a44b
--- /dev/null
+++ b/libavfilter/x86/gradfun.c
@@ -0,0 +1,162 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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/cpu.h"
+#include "libavutil/x86_cpu.h"
+#include "libavfilter/gradfun.h"
+
+DECLARE_ALIGNED(16, static const uint16_t, pw_7f)[8] = {0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F};
+DECLARE_ALIGNED(16, static const uint16_t, pw_ff)[8] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};
+
+void ff_gradfun_filter_line_mmx2(uint8_t *dst, uint8_t *src, uint16_t *dc, int width, int thresh, const uint16_t *dithers)
+{
+#if HAVE_MMX
+ 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;
+ __asm__ volatile(
+ "movd %4, %%mm5 \n"
+ "pxor %%mm7, %%mm7 \n"
+ "pshufw $0, %%mm5, %%mm5 \n"
+ "movq %6, %%mm6 \n"
+ "movq %5, %%mm4 \n"
+ "1: \n"
+ "movd (%2,%0), %%mm0 \n"
+ "movd (%3,%0), %%mm1 \n"
+ "punpcklbw %%mm7, %%mm0 \n"
+ "punpcklwd %%mm1, %%mm1 \n"
+ "psllw $7, %%mm0 \n"
+ "pxor %%mm2, %%mm2 \n"
+ "psubw %%mm0, %%mm1 \n" // delta = dc - pix
+ "psubw %%mm1, %%mm2 \n"
+ "pmaxsw %%mm1, %%mm2 \n"
+ "pmulhuw %%mm5, %%mm2 \n" // m = abs(delta) * thresh >> 16
+ "psubw %%mm6, %%mm2 \n"
+ "pminsw %%mm7, %%mm2 \n" // m = -max(0, 127-m)
+ "pmullw %%mm2, %%mm2 \n"
+ "paddw %%mm4, %%mm0 \n" // pix += dither
+ "pmulhw %%mm2, %%mm1 \n"
+ "psllw $2, %%mm1 \n" // m = m*m*delta >> 14
+ "paddw %%mm1, %%mm0 \n" // pix += m
+ "psraw $7, %%mm0 \n"
+ "packuswb %%mm0, %%mm0 \n"
+ "movd %%mm0, (%1,%0) \n" // dst = clip(pix>>7)
+ "add $4, %0 \n"
+ "jl 1b \n"
+ "emms \n"
+ :"+r"(x)
+ :"r"(dst+width), "r"(src+width), "r"(dc+width/2),
+ "rm"(thresh), "m"(*dithers), "m"(*pw_7f)
+ :"memory"
+ );
+#endif
+}
+
+void ff_gradfun_filter_line_ssse3(uint8_t *dst, uint8_t *src, uint16_t *dc, int width, int thresh, const uint16_t *dithers)
+{
+#if HAVE_SSSE3
+ 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;
+ __asm__ volatile(
+ "movd %4, %%xmm5 \n"
+ "pxor %%xmm7, %%xmm7 \n"
+ "pshuflw $0,%%xmm5, %%xmm5 \n"
+ "movdqa %6, %%xmm6 \n"
+ "punpcklqdq %%xmm5, %%xmm5 \n"
+ "movdqa %5, %%xmm4 \n"
+ "1: \n"
+ "movq (%2,%0), %%xmm0 \n"
+ "movq (%3,%0), %%xmm1 \n"
+ "punpcklbw %%xmm7, %%xmm0 \n"
+ "punpcklwd %%xmm1, %%xmm1 \n"
+ "psllw $7, %%xmm0 \n"
+ "psubw %%xmm0, %%xmm1 \n" // delta = dc - pix
+ "pabsw %%xmm1, %%xmm2 \n"
+ "pmulhuw %%xmm5, %%xmm2 \n" // m = abs(delta) * thresh >> 16
+ "psubw %%xmm6, %%xmm2 \n"
+ "pminsw %%xmm7, %%xmm2 \n" // m = -max(0, 127-m)
+ "pmullw %%xmm2, %%xmm2 \n"
+ "psllw $1, %%xmm2 \n"
+ "paddw %%xmm4, %%xmm0 \n" // pix += dither
+ "pmulhrsw %%xmm2, %%xmm1 \n" // m = m*m*delta >> 14
+ "paddw %%xmm1, %%xmm0 \n" // pix += m
+ "psraw $7, %%xmm0 \n"
+ "packuswb %%xmm0, %%xmm0 \n"
+ "movq %%xmm0, (%1,%0) \n" // dst = clip(pix>>7)
+ "add $8, %0 \n"
+ "jl 1b \n"
+ :"+&r"(x)
+ :"r"(dst+width), "r"(src+width), "r"(dc+width/2),
+ "rm"(thresh), "m"(*dithers), "m"(*pw_7f)
+ :"memory"
+ );
+#endif // HAVE_SSSE3
+}
+
+void ff_gradfun_blur_line_sse2(uint16_t *dc, uint16_t *buf, uint16_t *buf1, uint8_t *src, int src_linesize, int width)
+{
+#if HAVE_SSE
+#define BLURV(load)\
+ intptr_t x = -2*width;\
+ __asm__ volatile(\
+ "movdqa %6, %%xmm7 \n"\
+ "1: \n"\
+ load" (%4,%0), %%xmm0 \n"\
+ load" (%5,%0), %%xmm1 \n"\
+ "movdqa %%xmm0, %%xmm2 \n"\
+ "movdqa %%xmm1, %%xmm3 \n"\
+ "psrlw $8, %%xmm0 \n"\
+ "psrlw $8, %%xmm1 \n"\
+ "pand %%xmm7, %%xmm2 \n"\
+ "pand %%xmm7, %%xmm3 \n"\
+ "paddw %%xmm1, %%xmm0 \n"\
+ "paddw %%xmm3, %%xmm2 \n"\
+ "paddw %%xmm2, %%xmm0 \n"\
+ "paddw (%2,%0), %%xmm0 \n"\
+ "movdqa (%1,%0), %%xmm1 \n"\
+ "movdqa %%xmm0, (%1,%0) \n"\
+ "psubw %%xmm1, %%xmm0 \n"\
+ "movdqa %%xmm0, (%3,%0) \n"\
+ "add $16, %0 \n"\
+ "jl 1b \n"\
+ :"+&r"(x)\
+ :"r"(buf+width),\
+ "r"(buf1+width),\
+ "r"(dc+width),\
+ "r"(src+width*2),\
+ "r"(src+width*2+src_linesize),\
+ "m"(*pw_ff)\
+ :"memory"\
+ );
+ if (((intptr_t) src | src_linesize) & 15) {
+ BLURV("movdqu");
+ } else {
+ BLURV("movdqa");
+ }
+#endif // HAVE_SSE
+}
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