[PATCH] Add yadif filter.
Stefano Sabatini
stefano.sabatini-lala
Sat Sep 4 12:36:52 CEST 2010
Based on the Baptiste port from libmpcodecs.
---
configure | 1 +
doc/filters.texi | 30 +++++
libavfilter/Makefile | 3 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_yadif.c | 290 ++++++++++++++++++++++++++++++++++++++++++++++
libavfilter/x86/yadif.c | 240 ++++++++++++++++++++++++++++++++++++++
libavfilter/yadif.h | 28 +++++
7 files changed, 593 insertions(+), 0 deletions(-)
create mode 100644 libavfilter/vf_yadif.c
create mode 100644 libavfilter/x86/yadif.c
create mode 100644 libavfilter/yadif.h
diff --git a/configure b/configure
index 781b09d..f4e4feb 100755
--- a/configure
+++ b/configure
@@ -1402,6 +1402,7 @@ udp_protocol_deps="network"
# filters
ocv_smooth_filter_deps="libopencv"
+yadif_filter_deps="gpl"
# libraries
avdevice_deps="avcodec avformat"
diff --git a/doc/filters.texi b/doc/filters.texi
index d0fcbca..a508f83 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -448,6 +448,36 @@ Flip the input video vertically.
./ffmpeg -i in.avi -vf "vflip" out.avi
@end example
+ at section yadif
+
+yadif is "yet another deinterlacing filter".
+
+It accepts the syntax:
+ at example
+yadif=[@var{mode}[:@var{parity}]]
+ at end example
+
+ at table @option
+
+ at item mode
+Specify the interlacing mode to adopt, accepts one of the following values.
+
+0: Output 1 frame for each frame.
+
+1: Output 1 frame for each field.
+
+2: Like 0 but skips spatial interlacing check.
+
+3: Like 1 but skips spatial interlacing check.
+
+Default value is 0.
+
+ at item parity
+0 if is bottom field first, 1 if the interlaced video is top field
+first, -1 to enable automatic detection.
+
+ at end table
+
@c man end VIDEO FILTERS
@chapter Video Sources
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 39c4b3b..c3f4a49 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -36,6 +36,9 @@ OBJS-$(CONFIG_SCALE_FILTER) += vf_scale.o
OBJS-$(CONFIG_SLICIFY_FILTER) += vf_slicify.o
OBJS-$(CONFIG_UNSHARP_FILTER) += vf_unsharp.o
OBJS-$(CONFIG_VFLIP_FILTER) += vf_vflip.o
+OBJS-$(CONFIG_YADIF_FILTER) += vf_yadif.o
+
+OBJS-$(ARCH_X86) += x86/yadif.o
OBJS-$(CONFIG_BUFFER_FILTER) += vsrc_buffer.o
OBJS-$(CONFIG_COLOR_FILTER) += vf_pad.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index ac54bd0..ec7d933 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -56,6 +56,7 @@ void avfilter_register_all(void)
REGISTER_FILTER (SLICIFY, slicify, vf);
REGISTER_FILTER (UNSHARP, unsharp, vf);
REGISTER_FILTER (VFLIP, vflip, vf);
+ REGISTER_FILTER (YADIF, yadif, vf);
REGISTER_FILTER (BUFFER, buffer, vsrc);
REGISTER_FILTER (COLOR, color, vsrc);
diff --git a/libavfilter/vf_yadif.c b/libavfilter/vf_yadif.c
new file mode 100644
index 0000000..ff10888
--- /dev/null
+++ b/libavfilter/vf_yadif.c
@@ -0,0 +1,290 @@
+/*
+ * Copyright (C) 2006 Michael Niedermayer <michaelni at 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/cpu.h"
+#include "libavutil/x86_cpu.h"
+#include "libavutil/common.h"
+#include "avfilter.h"
+#include "yadif.h"
+
+typedef struct {
+ /**
+ * 0: send 1 frame for each frame
+ * 1: send 1 frame for each field
+ * 2: like 0 but skips spatial interlacing check
+ * 3: like 1 but skips spatial interlacing check
+ */
+ int mode;
+
+ /**
+ * 0: bottom field first
+ * 1: top field first
+ * -1: auto-detection
+ */
+ int parity;
+
+ AVFilterBufferRef *cur;
+ AVFilterBufferRef *next;
+ AVFilterBufferRef *prev;
+ void (*filter_line)(AVFilterContext *ctx, uint8_t *dst,
+ uint8_t *prev, uint8_t *cur, uint8_t *next,
+ int w, int refs, int parity);
+} YADIFContext;
+
+static void filter_line_c(AVFilterContext *ctx, uint8_t *dst,
+ uint8_t *prev, uint8_t *cur, uint8_t *next,
+ int w, int refs, int parity)
+{
+ YADIFContext *yadif = ctx->priv;
+ int x;
+ uint8_t *prev2 = parity ? prev : cur ;
+ uint8_t *next2 = parity ? cur : next;
+ for (x = 0; x < w; x++) {
+ int c = cur[-refs];
+ int d = (prev2[0] + next2[0])>>1;
+ int e = cur[+refs];
+ int temporal_diff0 = FFABS(prev2[0] - next2[0]);
+ int temporal_diff1 =(FFABS(prev[-refs] - c) + FFABS(prev[+refs] - e) )>>1;
+ int temporal_diff2 =(FFABS(next[-refs] - c) + FFABS(next[+refs] - e) )>>1;
+ int diff = FFMAX3(temporal_diff0>>1, temporal_diff1, temporal_diff2);
+ int spatial_pred = (c+e)>>1;
+ int spatial_score = FFABS(cur[-refs-1] - cur[+refs-1]) + FFABS(c-e)
+ + FFABS(cur[-refs+1] - cur[+refs+1]) - 1;
+
+#define CHECK(j)\
+ { int score = FFABS(cur[-refs-1+j] - cur[+refs-1-j])\
+ + FFABS(cur[-refs +j] - cur[+refs -j])\
+ + FFABS(cur[-refs+1+j] - cur[+refs+1-j]);\
+ if (score < spatial_score) {\
+ spatial_score= score;\
+ spatial_pred= (cur[-refs +j] + cur[+refs -j])>>1;\
+
+ CHECK(-1) CHECK(-2) }} }}
+ CHECK( 1) CHECK( 2) }} }}
+
+ if (yadif->mode < 2) {
+ int b = (prev2[-2*refs] + next2[-2*refs])>>1;
+ int f = (prev2[+2*refs] + next2[+2*refs])>>1;
+#if 0
+ int a = cur[-3*refs];
+ int g = cur[+3*refs];
+ int max = FFMAX3(d-e, d-c, FFMIN3(FFMAX(b-c,f-e),FFMAX(b-c,b-a),FFMAX(f-g,f-e)) );
+ int min = FFMIN3(d-e, d-c, FFMAX3(FFMIN(b-c,f-e),FFMIN(b-c,b-a),FFMIN(f-g,f-e)) );
+#else
+ int max = FFMAX3(d-e, d-c, FFMIN(b-c, f-e));
+ int min = FFMIN3(d-e, d-c, FFMAX(b-c, f-e));
+#endif
+
+ diff = FFMAX3(diff, min, -max);
+ }
+
+ if (spatial_pred > d + diff)
+ spatial_pred = d + diff;
+ else if (spatial_pred < d - diff)
+ spatial_pred = d - diff;
+
+ dst[0] = spatial_pred;
+
+ dst++;
+ cur++;
+ prev++;
+ next++;
+ prev2++;
+ next2++;
+ }
+}
+
+static void filter(AVFilterContext *ctx, AVFilterBufferRef *dstpic,
+ int parity, int tff)
+{
+ YADIFContext *yadif = ctx->priv;
+ int y, i;
+
+ for (i = 0; i < 3; i++) {
+ int is_chroma = !!i;
+ int w = dstpic->video->w >> is_chroma;
+ int h = dstpic->video->h >> is_chroma;
+ int refs = yadif->cur->linesize[i];
+
+ for (y = 0; y < h; y++) {
+ if ((y ^ parity) & 1) {
+ uint8_t *prev = &yadif->prev->data[i][y*refs];
+ uint8_t *cur = &yadif->cur ->data[i][y*refs];
+ uint8_t *next = &yadif->next->data[i][y*refs];
+ uint8_t *dst = &dstpic->data[i][y*dstpic->linesize[i]];
+ yadif->filter_line(ctx, dst, prev, cur, next, w, refs, parity ^ tff);
+ } else {
+ memcpy(&dstpic->data[i][y*dstpic->linesize[i]],
+ &yadif->cur->data[i][y*refs], w);
+ }
+ }
+ }
+#if HAVE_MMX
+ __asm__ volatile("emms \n\t" : : : "memory");
+#endif
+}
+
+static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms, int w, int h)
+{
+ AVFilterBufferRef *picref;
+ int width = FFALIGN(w, 32);
+ int height= FFALIGN(h+6, 32);
+ int i;
+
+ picref = avfilter_default_get_video_buffer(link, perms, width, height);
+
+ picref->video->w = w;
+ picref->video->h = h;
+
+ for (i = 0; i < 3; i++)
+ picref->data[i] += 3 * picref->linesize[i];
+
+ return picref;
+}
+
+static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
+{
+ YADIFContext *yadif = link->dst->priv;
+
+ if (!yadif->cur)
+ yadif->cur = picref;
+ else if (!yadif->next)
+ yadif->next = picref;
+}
+
+static int request_frame(AVFilterLink *link)
+{
+ AVFilterContext *ctx = link->src;
+ YADIFContext *yadif = ctx->priv;
+ AVFilterBufferRef *picref;
+ int ret, parity;
+
+ if (!yadif->cur)
+ if ((ret = avfilter_request_frame(link->src->inputs[0])))
+ return ret;
+
+ if (!yadif->next)
+ if ((ret = avfilter_request_frame(link->src->inputs[0])))
+ return ret;
+
+ if (!yadif->prev)
+ yadif->prev = avfilter_get_video_buffer(link, AV_PERM_WRITE | AV_PERM_PRESERVE |
+ AV_PERM_REUSE, link->w, link->h);
+
+ picref = avfilter_get_video_buffer(link, AV_PERM_WRITE | AV_PERM_PRESERVE |
+ AV_PERM_REUSE, link->w, link->h);
+
+ parity = yadif->parity == -1 ? yadif->cur->video->top_field_first : yadif->parity;
+
+ filter(ctx, picref, 1 ^ yadif->cur->video->top_field_first, parity);
+ picref->pts = yadif->cur->pts;
+
+ avfilter_start_frame(link, picref);
+ avfilter_draw_slice(link, 0, link->h, 1);
+ avfilter_end_frame(link);
+
+ if (yadif->prev)
+ avfilter_unref_buffer(yadif->prev);
+ yadif->prev = yadif->cur;
+ yadif->cur = yadif->next;
+ yadif->next = NULL;
+
+ return 0;
+}
+
+static int poll_frame(AVFilterLink *link)
+{
+ YADIFContext *yadif = link->src->priv;
+ int val = avfilter_poll_frame(link->src->inputs[0]);
+ if (val > 1 || (yadif->cur && (yadif->next || val > 0)))
+ return 1;
+ return 0;
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ YADIFContext *yadif = ctx->priv;
+
+ if (yadif->prev) avfilter_unref_buffer(yadif->prev);
+ if (yadif->cur ) avfilter_unref_buffer(yadif->cur );
+ if (yadif->next) avfilter_unref_buffer(yadif->next);
+}
+
+static int query_formats(AVFilterContext *ctx)
+{
+ static const enum PixelFormat pix_fmts[] = {
+ PIX_FMT_YUV420P,
+ PIX_FMT_GRAY8,
+ PIX_FMT_NONE
+ };
+
+ avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
+
+ return 0;
+}
+
+static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+{
+ YADIFContext *yadif = ctx->priv;
+ av_unused int cpu_flags = av_get_cpu_flags();
+
+ yadif->mode = 0;
+ yadif->parity = -1;
+
+ if (args) sscanf(args, "%d:%d", &yadif->mode, &yadif->parity);
+
+ yadif->filter_line = filter_line_c;
+#if HAVE_MMX
+ if (cpu_flags & AV_CPU_FLAG_MMX)
+ yadif->filter_line = ff_yadif_filter_line_mmx;
+#endif
+
+ av_log(ctx, AV_LOG_INFO, "mode:%d parity:%d\n", yadif->mode, yadif->parity);
+
+ return 0;
+}
+
+static void null_end_frame(AVFilterLink *link) { }
+
+static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
+
+AVFilter avfilter_vf_yadif = {
+ .name = "yadif",
+ .description = NULL_IF_CONFIG_SMALL("Deinterlace the input image"),
+
+ .priv_size = sizeof(YADIFContext),
+ .init = init,
+ .uninit = uninit,
+ .query_formats = query_formats,
+
+ .inputs = (AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .start_frame = start_frame,
+ .get_video_buffer = get_video_buffer,
+ .draw_slice = null_draw_slice,
+ .end_frame = null_end_frame, },
+ { .name = NULL}},
+
+ .outputs = (AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .poll_frame = poll_frame,
+ .request_frame = request_frame, },
+ { .name = NULL}},
+};
diff --git a/libavfilter/x86/yadif.c b/libavfilter/x86/yadif.c
new file mode 100644
index 0000000..c75ee47
--- /dev/null
+++ b/libavfilter/x86/yadif.c
@@ -0,0 +1,240 @@
+/*
+ * Copyright (C) 2006 Michael Niedermayer <michaelni at 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 "libavfilter/yadif.h"
+
+#if HAVE_MMX
+
+#define LOAD4(mem,dst) \
+ "movd "mem", "#dst" \n\t"\
+ "punpcklbw %%mm7, "#dst" \n\t"
+
+#define PABS(tmp,dst) \
+ "pxor "#tmp", "#tmp" \n\t"\
+ "psubw "#dst", "#tmp" \n\t"\
+ "pmaxsw "#tmp", "#dst" \n\t"
+
+#define CHECK(pj,mj) \
+ "movq "#pj"(%[cur],%[mrefs]), %%mm2 \n\t" /* cur[x-refs-1+j] */\
+ "movq "#mj"(%[cur],%[prefs]), %%mm3 \n\t" /* cur[x+refs-1-j] */\
+ "movq %%mm2, %%mm4 \n\t"\
+ "movq %%mm2, %%mm5 \n\t"\
+ "pxor %%mm3, %%mm4 \n\t"\
+ "pavgb %%mm3, %%mm5 \n\t"\
+ "pand %[pb1], %%mm4 \n\t"\
+ "psubusb %%mm4, %%mm5 \n\t"\
+ "psrlq $8, %%mm5 \n\t"\
+ "punpcklbw %%mm7, %%mm5 \n\t" /* (cur[x-refs+j] + cur[x+refs-j])>>1 */\
+ "movq %%mm2, %%mm4 \n\t"\
+ "psubusb %%mm3, %%mm2 \n\t"\
+ "psubusb %%mm4, %%mm3 \n\t"\
+ "pmaxub %%mm3, %%mm2 \n\t"\
+ "movq %%mm2, %%mm3 \n\t"\
+ "movq %%mm2, %%mm4 \n\t" /* ABS(cur[x-refs-1+j] - cur[x+refs-1-j]) */\
+ "psrlq $8, %%mm3 \n\t" /* ABS(cur[x-refs +j] - cur[x+refs -j]) */\
+ "psrlq $16, %%mm4 \n\t" /* ABS(cur[x-refs+1+j] - cur[x+refs+1-j]) */\
+ "punpcklbw %%mm7, %%mm2 \n\t"\
+ "punpcklbw %%mm7, %%mm3 \n\t"\
+ "punpcklbw %%mm7, %%mm4 \n\t"\
+ "paddw %%mm3, %%mm2 \n\t"\
+ "paddw %%mm4, %%mm2 \n\t" /* score */
+
+#define CHECK1 \
+ "movq %%mm0, %%mm3 \n\t"\
+ "pcmpgtw %%mm2, %%mm3 \n\t" /* if(score < spatial_score) */\
+ "pminsw %%mm2, %%mm0 \n\t" /* spatial_score= score; */\
+ "movq %%mm3, %%mm6 \n\t"\
+ "pand %%mm3, %%mm5 \n\t"\
+ "pandn %%mm1, %%mm3 \n\t"\
+ "por %%mm5, %%mm3 \n\t"\
+ "movq %%mm3, %%mm1 \n\t" /* spatial_pred= (cur[x-refs+j] + cur[x+refs-j])>>1; */
+
+#define CHECK2 /* pretend not to have checked dir=2 if dir=1 was bad.\
+ hurts both quality and speed, but matches the C version. */\
+ "paddw %[pw1], %%mm6 \n\t"\
+ "psllw $14, %%mm6 \n\t"\
+ "paddsw %%mm6, %%mm2 \n\t"\
+ "movq %%mm0, %%mm3 \n\t"\
+ "pcmpgtw %%mm2, %%mm3 \n\t"\
+ "pminsw %%mm2, %%mm0 \n\t"\
+ "pand %%mm3, %%mm5 \n\t"\
+ "pandn %%mm1, %%mm3 \n\t"\
+ "por %%mm5, %%mm3 \n\t"\
+ "movq %%mm3, %%mm1 \n\t"
+
+void ff_yadif_filter_line_mmx(AVFilterContext *ctx, uint8_t *dst,
+ uint8_t *prev, uint8_t *cur, uint8_t *next,
+ int w, int refs, int parity)
+{
+ YADIFContext *yadif = ctx->priv;
+ static const uint64_t pw_1 = 0x0001000100010001ULL;
+ static const uint64_t pb_1 = 0x0101010101010101ULL;
+ const int mode = yadif->mode;
+ uint64_t tmp0, tmp1, tmp2, tmp3;
+ int x;
+
+#define FILTER\
+ for(x=0; x<w; x+=4){\
+ __asm__ volatile(\
+ "pxor %%mm7, %%mm7 \n\t"\
+ LOAD4("(%[cur],%[mrefs])", %%mm0) /* c = cur[x-refs] */\
+ LOAD4("(%[cur],%[prefs])", %%mm1) /* e = cur[x+refs] */\
+ LOAD4("(%["prev2"])", %%mm2) /* prev2[x] */\
+ LOAD4("(%["next2"])", %%mm3) /* next2[x] */\
+ "movq %%mm3, %%mm4 \n\t"\
+ "paddw %%mm2, %%mm3 \n\t"\
+ "psraw $1, %%mm3 \n\t" /* d = (prev2[x] + next2[x])>>1 */\
+ "movq %%mm0, %[tmp0] \n\t" /* c */\
+ "movq %%mm3, %[tmp1] \n\t" /* d */\
+ "movq %%mm1, %[tmp2] \n\t" /* e */\
+ "psubw %%mm4, %%mm2 \n\t"\
+ PABS( %%mm4, %%mm2) /* temporal_diff0 */\
+ LOAD4("(%[prev],%[mrefs])", %%mm3) /* prev[x-refs] */\
+ LOAD4("(%[prev],%[prefs])", %%mm4) /* prev[x+refs] */\
+ "psubw %%mm0, %%mm3 \n\t"\
+ "psubw %%mm1, %%mm4 \n\t"\
+ PABS( %%mm5, %%mm3)\
+ PABS( %%mm5, %%mm4)\
+ "paddw %%mm4, %%mm3 \n\t" /* temporal_diff1 */\
+ "psrlw $1, %%mm2 \n\t"\
+ "psrlw $1, %%mm3 \n\t"\
+ "pmaxsw %%mm3, %%mm2 \n\t"\
+ LOAD4("(%[next],%[mrefs])", %%mm3) /* next[x-refs] */\
+ LOAD4("(%[next],%[prefs])", %%mm4) /* next[x+refs] */\
+ "psubw %%mm0, %%mm3 \n\t"\
+ "psubw %%mm1, %%mm4 \n\t"\
+ PABS( %%mm5, %%mm3)\
+ PABS( %%mm5, %%mm4)\
+ "paddw %%mm4, %%mm3 \n\t" /* temporal_diff2 */\
+ "psrlw $1, %%mm3 \n\t"\
+ "pmaxsw %%mm3, %%mm2 \n\t"\
+ "movq %%mm2, %[tmp3] \n\t" /* diff */\
+\
+ "paddw %%mm0, %%mm1 \n\t"\
+ "paddw %%mm0, %%mm0 \n\t"\
+ "psubw %%mm1, %%mm0 \n\t"\
+ "psrlw $1, %%mm1 \n\t" /* spatial_pred */\
+ PABS( %%mm2, %%mm0) /* ABS(c-e) */\
+\
+ "movq -1(%[cur],%[mrefs]), %%mm2 \n\t" /* cur[x-refs-1] */\
+ "movq -1(%[cur],%[prefs]), %%mm3 \n\t" /* cur[x+refs-1] */\
+ "movq %%mm2, %%mm4 \n\t"\
+ "psubusb %%mm3, %%mm2 \n\t"\
+ "psubusb %%mm4, %%mm3 \n\t"\
+ "pmaxub %%mm3, %%mm2 \n\t"\
+ "pshufw $9,%%mm2, %%mm3 \n\t"\
+ "punpcklbw %%mm7, %%mm2 \n\t" /* ABS(cur[x-refs-1] - cur[x+refs-1]) */\
+ "punpcklbw %%mm7, %%mm3 \n\t" /* ABS(cur[x-refs+1] - cur[x+refs+1]) */\
+ "paddw %%mm2, %%mm0 \n\t"\
+ "paddw %%mm3, %%mm0 \n\t"\
+ "psubw %[pw1], %%mm0 \n\t" /* spatial_score */\
+\
+ CHECK(-2,0)\
+ CHECK1\
+ CHECK(-3,1)\
+ CHECK2\
+ CHECK(0,-2)\
+ CHECK1\
+ CHECK(1,-3)\
+ CHECK2\
+\
+ /* if(p->mode<2) ... */\
+ "movq %[tmp3], %%mm6 \n\t" /* diff */\
+ "cmp $2, %[mode] \n\t"\
+ "jge 1f \n\t"\
+ LOAD4("(%["prev2"],%[mrefs],2)", %%mm2) /* prev2[x-2*refs] */\
+ LOAD4("(%["next2"],%[mrefs],2)", %%mm4) /* next2[x-2*refs] */\
+ LOAD4("(%["prev2"],%[prefs],2)", %%mm3) /* prev2[x+2*refs] */\
+ LOAD4("(%["next2"],%[prefs],2)", %%mm5) /* next2[x+2*refs] */\
+ "paddw %%mm4, %%mm2 \n\t"\
+ "paddw %%mm5, %%mm3 \n\t"\
+ "psrlw $1, %%mm2 \n\t" /* b */\
+ "psrlw $1, %%mm3 \n\t" /* f */\
+ "movq %[tmp0], %%mm4 \n\t" /* c */\
+ "movq %[tmp1], %%mm5 \n\t" /* d */\
+ "movq %[tmp2], %%mm7 \n\t" /* e */\
+ "psubw %%mm4, %%mm2 \n\t" /* b-c */\
+ "psubw %%mm7, %%mm3 \n\t" /* f-e */\
+ "movq %%mm5, %%mm0 \n\t"\
+ "psubw %%mm4, %%mm5 \n\t" /* d-c */\
+ "psubw %%mm7, %%mm0 \n\t" /* d-e */\
+ "movq %%mm2, %%mm4 \n\t"\
+ "pminsw %%mm3, %%mm2 \n\t"\
+ "pmaxsw %%mm4, %%mm3 \n\t"\
+ "pmaxsw %%mm5, %%mm2 \n\t"\
+ "pminsw %%mm5, %%mm3 \n\t"\
+ "pmaxsw %%mm0, %%mm2 \n\t" /* max */\
+ "pminsw %%mm0, %%mm3 \n\t" /* min */\
+ "pxor %%mm4, %%mm4 \n\t"\
+ "pmaxsw %%mm3, %%mm6 \n\t"\
+ "psubw %%mm2, %%mm4 \n\t" /* -max */\
+ "pmaxsw %%mm4, %%mm6 \n\t" /* diff= MAX3(diff, min, -max); */\
+ "1: \n\t"\
+\
+ "movq %[tmp1], %%mm2 \n\t" /* d */\
+ "movq %%mm2, %%mm3 \n\t"\
+ "psubw %%mm6, %%mm2 \n\t" /* d-diff */\
+ "paddw %%mm6, %%mm3 \n\t" /* d+diff */\
+ "pmaxsw %%mm2, %%mm1 \n\t"\
+ "pminsw %%mm3, %%mm1 \n\t" /* d = clip(spatial_pred, d-diff, d+diff); */\
+ "packuswb %%mm1, %%mm1 \n\t"\
+\
+ :[tmp0]"=m"(tmp0),\
+ [tmp1]"=m"(tmp1),\
+ [tmp2]"=m"(tmp2),\
+ [tmp3]"=m"(tmp3)\
+ :[prev] "r"(prev),\
+ [cur] "r"(cur),\
+ [next] "r"(next),\
+ [prefs]"r"((x86_reg)refs),\
+ [mrefs]"r"((x86_reg)-refs),\
+ [pw1] "m"(pw_1),\
+ [pb1] "m"(pb_1),\
+ [mode] "g"(mode)\
+ );\
+ __asm__ volatile("movd %%mm1, %0" :"=m"(*dst));\
+ dst += 4;\
+ prev+= 4;\
+ cur += 4;\
+ next+= 4;\
+ }
+
+ if (parity) {
+#define prev2 "prev"
+#define next2 "cur"
+ FILTER
+#undef prev2
+#undef next2
+ } else {
+#define prev2 "cur"
+#define next2 "next"
+ FILTER
+#undef prev2
+#undef next2
+ }
+}
+#undef LOAD4
+#undef PABS
+#undef CHECK
+#undef CHECK1
+#undef CHECK2
+#undef FILTER
+
+#endif /* HAVE_MMX */
diff --git a/libavfilter/yadif.h b/libavfilter/yadif.h
new file mode 100644
index 0000000..6947166
--- /dev/null
+++ b/libavfilter/yadif.h
@@ -0,0 +1,28 @@
+/*
+ * 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.
+ */
+
+#ifndef AVFILTER_YADIF_H
+#define AVFILTER_YADIF_H
+
+#include "avfilter.h"
+
+void ff_yadif_filter_line_mmx(AVFilterContext *ctx, uint8_t *dst,
+ uint8_t *prev, uint8_t *cur, uint8_t *next,
+ int w, int refs, int parity);
+
+#endif /* AVFILTER_YADIF_H */
--
1.7.1
--HcAYCG3uE/tztfnV--
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