lavfi: port mp=pp7 to libavfilter

The only difference with mp=pp7 is that default mode is "medium", as stated
in the MPlayer docs, rather than "hard".

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

2 files changed, 69 insertions, 0 deletions

diff --git a/libavfilter/x86/Makefile b/libavfilter/x86/Makefile
index d9265c94a6..a472a72b11 100644
--- a/libavfilter/x86/Makefile
+++ b/libavfilter/x86/Makefile
@@ -4,6 +4,7 @@ OBJS-$(CONFIG_HQDN3D_FILTER)                 += x86/vf_hqdn3d_init.o
 OBJS-$(CONFIG_IDET_FILTER)                   += x86/vf_idet_init.o
 OBJS-$(CONFIG_INTERLACE_FILTER)              += x86/vf_interlace_init.o
 OBJS-$(CONFIG_NOISE_FILTER)                  += x86/vf_noise.o
+OBJS-$(CONFIG_PP7_FILTER)                    += x86/vf_pp7.o
 OBJS-$(CONFIG_PULLUP_FILTER)                 += x86/vf_pullup_init.o
 OBJS-$(CONFIG_SPP_FILTER)                    += x86/vf_spp.o
 OBJS-$(CONFIG_TINTERLACE_FILTER)             += x86/vf_tinterlace_init.o
diff --git a/libavfilter/x86/vf_pp7.c b/libavfilter/x86/vf_pp7.c
new file mode 100644
index 0000000000..64c8618019
--- /dev/null
+++ b/libavfilter/x86/vf_pp7.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/mem.h"
+#include "libavutil/x86/asm.h"
+#include "libavfilter/vf_pp7.h"
+
+static void dctB_mmx(int16_t *dst, int16_t *src)
+{
+#if HAVE_MMX_INLINE
+    __asm__ volatile (
+        "movq  (%0), %%mm0      \n\t"
+        "movq  1*4*2(%0), %%mm1 \n\t"
+        "paddw 6*4*2(%0), %%mm0 \n\t"
+        "paddw 5*4*2(%0), %%mm1 \n\t"
+        "movq  2*4*2(%0), %%mm2 \n\t"
+        "movq  3*4*2(%0), %%mm3 \n\t"
+        "paddw 4*4*2(%0), %%mm2 \n\t"
+        "paddw %%mm3, %%mm3     \n\t" //s
+        "movq %%mm3, %%mm4      \n\t" //s
+        "psubw %%mm0, %%mm3     \n\t" //s-s0
+        "paddw %%mm0, %%mm4     \n\t" //s+s0
+        "movq %%mm2, %%mm0      \n\t" //s2
+        "psubw %%mm1, %%mm2     \n\t" //s2-s1
+        "paddw %%mm1, %%mm0     \n\t" //s2+s1
+        "movq %%mm4, %%mm1      \n\t" //s0'
+        "psubw %%mm0, %%mm4     \n\t" //s0'-s'
+        "paddw %%mm0, %%mm1     \n\t" //s0'+s'
+        "movq %%mm3, %%mm0      \n\t" //s3'
+        "psubw %%mm2, %%mm3     \n\t"
+        "psubw %%mm2, %%mm3     \n\t"
+        "paddw %%mm0, %%mm2     \n\t"
+        "paddw %%mm0, %%mm2     \n\t"
+        "movq %%mm1, (%1)       \n\t"
+        "movq %%mm4, 2*4*2(%1)  \n\t"
+        "movq %%mm2, 1*4*2(%1)  \n\t"
+        "movq %%mm3, 3*4*2(%1)  \n\t"
+        :: "r" (src), "r"(dst)
+    );
+#endif
+}
+
+av_cold void ff_pp7_init_x86(PP7Context *p)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (HAVE_MMX_INLINE && cpu_flags & AV_CPU_FLAG_MMX)
+        p->dctB = dctB_mmx;
+}