new filter: flip

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5558 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 84 insertions, 0 deletions

diff --git a/libmpcodecs/vf_flip.c b/libmpcodecs/vf_flip.c
new file mode 100644
index 0000000000..bc9c51ef4b
--- /dev/null
+++ b/libmpcodecs/vf_flip.c
@@ -0,0 +1,84 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../config.h"
+#include "../mp_msg.h"
+
+#include "../mp_image.h"
+#include "vf.h"
+
+#include "../libvo/fastmemcpy.h"
+
+struct vf_priv_s {
+    mp_image_t *dmpi;
+};
+
+//===========================================================================//
+
+static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
+    if(mpi->flags&MP_IMGFLAG_ACCEPT_STRIDE){
+	// try full DR !
+	vf->priv->dmpi=vf_get_image(vf->next,mpi->imgfmt,
+	    mpi->type, mpi->flags, mpi->width, mpi->height);
+	// set up mpi as a upside-down image of dmpi:
+	mpi->planes[0]=vf->priv->dmpi->planes[0]+
+		    vf->priv->dmpi->stride[0]*(vf->priv->dmpi->height-1);
+	mpi->stride[0]=-vf->priv->dmpi->stride[0];
+	if(mpi->flags&MP_IMGFLAG_PLANAR){
+	    mpi->planes[1]=vf->priv->dmpi->planes[1]+
+		    vf->priv->dmpi->stride[1]*((vf->priv->dmpi->height>>1)-1);
+	    mpi->stride[1]=-vf->priv->dmpi->stride[1];
+	    mpi->planes[2]=vf->priv->dmpi->planes[2]+
+		    vf->priv->dmpi->stride[2]*((vf->priv->dmpi->height>>1)-1);
+	    mpi->stride[2]=-vf->priv->dmpi->stride[2];
+	}
+	mpi->flags|=MP_IMGFLAG_DIRECT;
+    }
+}
+
+static void put_image(struct vf_instance_s* vf, mp_image_t *mpi){
+    if(mpi->flags&MP_IMGFLAG_DIRECT){
+	vf_next_put_image(vf,vf->priv->dmpi);
+	return; // we've used DR, so we're ready...
+    }
+
+    // hope we'll get DR buffer:
+    vf->priv->dmpi=vf_get_image(vf->next,mpi->imgfmt,
+	MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
+	mpi->width, mpi->height);
+    
+    // set up mpi as a upside-down image of dmpi:
+    vf->priv->dmpi->planes[0]=mpi->planes[0]+
+		    mpi->stride[0]*(mpi->height-1);
+    vf->priv->dmpi->stride[0]=-mpi->stride[0];
+    if(vf->priv->dmpi->flags&MP_IMGFLAG_PLANAR){
+        vf->priv->dmpi->planes[1]=mpi->planes[1]+
+	    mpi->stride[1]*((mpi->height>>1)-1);
+	vf->priv->dmpi->stride[1]=-mpi->stride[1];
+	vf->priv->dmpi->planes[2]=mpi->planes[2]+
+	    mpi->stride[2]*((mpi->height>>1)-1);
+	vf->priv->dmpi->stride[2]=-mpi->stride[2];
+    }
+    
+    vf_next_put_image(vf,vf->priv->dmpi);
+}
+
+//===========================================================================//
+
+static int open(vf_instance_t *vf, char* args){
+    vf->get_image=get_image;
+    vf->put_image=put_image;
+    vf->priv=malloc(sizeof(struct vf_priv_s));
+    return 1;
+}
+
+vf_info_t vf_info_flip = {
+    "flip image upside-down",
+    "flip",
+    "A'rpi",
+    "",
+    open
+};
+
+//===========================================================================//