Add MPlayers libmpcodecs, this will be needed for our libavfilter wraper for it.

1 files changed, 89 insertions, 0 deletions

diff --git a/libavfilter/libmpcodecs/vf_field.c b/libavfilter/libmpcodecs/vf_field.c
new file mode 100644
index 0000000000..fcf24be0bc
--- /dev/null
+++ b/libavfilter/libmpcodecs/vf_field.c
@@ -0,0 +1,89 @@
+/*
+ * 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 "config.h"
+#include "mp_msg.h"
+
+#include "mp_image.h"
+#include "vf.h"
+
+struct vf_priv_s {
+    int field;
+};
+
+//===========================================================================//
+
+static int config(struct vf_instance *vf,
+        int width, int height, int d_width, int d_height,
+        unsigned int flags, unsigned int outfmt){
+    return vf_next_config(vf,width,height/2,d_width,d_height,flags,outfmt);
+}
+
+static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
+    vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
+        MP_IMGTYPE_EXPORT, MP_IMGFLAG_ACCEPT_STRIDE,
+        mpi->width, mpi->height/2);
+
+    // set up mpi as a double-stride image of dmpi:
+    vf->dmpi->planes[0]=mpi->planes[0]+mpi->stride[0]*vf->priv->field;
+    vf->dmpi->stride[0]=2*mpi->stride[0];
+    if(vf->dmpi->flags&MP_IMGFLAG_PLANAR){
+        vf->dmpi->planes[1]=mpi->planes[1]+
+            mpi->stride[1]*vf->priv->field;
+        vf->dmpi->stride[1]=2*mpi->stride[1];
+        vf->dmpi->planes[2]=mpi->planes[2]+
+            mpi->stride[2]*vf->priv->field;
+        vf->dmpi->stride[2]=2*mpi->stride[2];
+    } else
+        vf->dmpi->planes[1]=mpi->planes[1]; // passthru bgr8 palette!!!
+
+    return vf_next_put_image(vf,vf->dmpi, pts);
+}
+
+//===========================================================================//
+
+static void uninit(struct vf_instance *vf)
+{
+        free(vf->priv);
+}
+
+static int vf_open(vf_instance_t *vf, char *args){
+    vf->config=config;
+    vf->put_image=put_image;
+    vf->uninit=uninit;
+    vf->default_reqs=VFCAP_ACCEPT_STRIDE;
+    vf->priv=calloc(1, sizeof(struct vf_priv_s));
+    if (args) sscanf(args, "%d", &vf->priv->field);
+    vf->priv->field &= 1;
+    return 1;
+}
+
+const vf_info_t vf_info_field = {
+    "extract single field",
+    "field",
+    "Rich Felker",
+    "",
+    vf_open,
+    NULL
+};
+
+//===========================================================================//