1 files changed, 148 insertions, 0 deletions
diff --git a/libavfilter/libmpcodecs/vf_il.c b/libavfilter/libmpcodecs/vf_il.c
new file mode 100644
index 0000000..210e30d
--- /dev/null
+++ b/libavfilter/libmpcodecs/vf_il.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of MPlayer.
+ *
+ * MPlayer 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.
+ *
+ * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+#include <assert.h>
+
+#include "mp_msg.h"
+#include "img_format.h"
+#include "mp_image.h"
+#include "vf.h"
+#include "libvo/fastmemcpy.h"
+
+
+//===========================================================================//
+
+typedef struct FilterParam{
+    int interleave;
+    int swap;
+}FilterParam;
+
+struct vf_priv_s {
+    FilterParam lumaParam;
+    FilterParam chromaParam;
+};
+
+/***************************************************************************/
+
+static void interleave(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, int interleave, int swap){
+    const int a= swap;
+    const int b= 1-a;
+    const int m= h>>1;
+    int y;
+
+    switch(interleave){
+    case -1:
+        for(y=0; y < m; y++){
+            fast_memcpy(dst + dstStride* y     , src + srcStride*(y*2 + a), w);
+            fast_memcpy(dst + dstStride*(y + m), src + srcStride*(y*2 + b), w);
+        }
+        break;
+    case 0:
+        for(y=0; y < m; y++){
+            fast_memcpy(dst + dstStride* y*2   , src + srcStride*(y*2 + a), w);
+            fast_memcpy(dst + dstStride*(y*2+1), src + srcStride*(y*2 + b), w);
+        }
+        break;
+    case 1:
+        for(y=0; y < m; y++){
+            fast_memcpy(dst + dstStride*(y*2+a), src + srcStride* y     , w);
+            fast_memcpy(dst + dstStride*(y*2+b), src + srcStride*(y + m), w);
+        }
+        break;
+    }
+}
+
+static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
+    int w;
+    FilterParam *luma  = &vf->priv->lumaParam;
+    FilterParam *chroma= &vf->priv->chromaParam;
+
+    mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
+        MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
+        mpi->w,mpi->h);
+
+    if(mpi->flags&MP_IMGFLAG_PLANAR)
+        w= mpi->w;
+    else
+        w= mpi->w * mpi->bpp/8;
+
+    interleave(dmpi->planes[0], mpi->planes[0],
+        w, mpi->h, dmpi->stride[0], mpi->stride[0], luma->interleave, luma->swap);
+
+    if(mpi->flags&MP_IMGFLAG_PLANAR){
+        int cw= mpi->w >> mpi->chroma_x_shift;
+        int ch= mpi->h >> mpi->chroma_y_shift;
+
+        interleave(dmpi->planes[1], mpi->planes[1], cw,ch,
+            dmpi->stride[1], mpi->stride[1], chroma->interleave, luma->swap);
+        interleave(dmpi->planes[2], mpi->planes[2], cw,ch,
+            dmpi->stride[2], mpi->stride[2], chroma->interleave, luma->swap);
+    }
+
+    return vf_next_put_image(vf,dmpi, pts);
+}
+
+//===========================================================================//
+
+static void parse(FilterParam *fp, char* args){
+    char *pos;
+    char *max= strchr(args, ':');
+
+    if(!max) max= args + strlen(args);
+
+    pos= strchr(args, 's');
+    if(pos && pos<max) fp->swap=1;
+    pos= strchr(args, 'i');
+    if(pos && pos<max) fp->interleave=1;
+    pos= strchr(args, 'd');
+    if(pos && pos<max) fp->interleave=-1;
+}
+
+static int vf_open(vf_instance_t *vf, char *args){
+
+    vf->put_image=put_image;
+//    vf->get_image=get_image;
+    vf->priv=malloc(sizeof(struct vf_priv_s));
+    memset(vf->priv, 0, sizeof(struct vf_priv_s));
+
+    if(args)
+    {
+        char *arg2= strchr(args,':');
+        if(arg2) parse(&vf->priv->chromaParam, arg2+1);
+        parse(&vf->priv->lumaParam, args);
+    }
+
+    return 1;
+}
+
+const vf_info_t vf_info_il = {
+    "(de)interleave",
+    "il",
+    "Michael Niedermayer",
+    "",
+    vf_open,
+    NULL
+};
+
+//===========================================================================//