swscale filter

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5523 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 79 insertions, 0 deletions

diff --git a/libmpcodecs/vf_scale.c b/libmpcodecs/vf_scale.c
new file mode 100644
index 0000000000..0f58137178
--- /dev/null
+++ b/libmpcodecs/vf_scale.c
@@ -0,0 +1,79 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "../config.h"
+#include "../mp_msg.h"
+
+#include "../mp_image.h"
+#include "vf.h"
+
+#include "../libvo/fastmemcpy.h"
+#include "../postproc/swscale.h"
+
+struct vf_priv_s {
+    int w,h;
+    SwsContext *ctx;
+};
+
+//===========================================================================//
+
+static int config(struct vf_instance_s* vf,
+        int width, int height, int d_width, int d_height,
+	unsigned int flags, unsigned int outfmt){
+    // calculate the missing parameters:
+    if(vf->priv->w<=0) vf->priv->w=width;
+    if(vf->priv->h<=0) vf->priv->h=height;
+    // new swscaler:
+    vf->priv->ctx=getSwsContextFromCmdLine(width,height,outfmt,
+		  vf->priv->w,vf->priv->h,outfmt);
+    if(!vf->priv->ctx){
+	// error...
+	printf("Couldn't init SwScaler for this setup\n");
+	return 0;
+    }
+    return vf_next_config(vf,vf->priv->w,vf->priv->h,d_width,d_height,flags,outfmt);
+}
+
+static void put_image(struct vf_instance_s* vf, mp_image_t *mpi){
+    mp_image_t *dmpi;
+
+    // hope we'll get DR buffer:
+    dmpi=vf_get_image(vf->next,mpi->imgfmt,
+	MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
+	vf->priv->w, vf->priv->h);
+    
+    vf->priv->ctx->swScale(vf->priv->ctx,mpi->planes,mpi->stride,0,mpi->h,dmpi->planes,dmpi->stride);
+    
+    vf_next_put_image(vf,dmpi);
+}
+
+//===========================================================================//
+
+static int open(vf_instance_t *vf, char* args){
+    vf->config=config;
+    vf->put_image=put_image;
+    vf->priv=malloc(sizeof(struct vf_priv_s));
+    // TODO: parse args ->
+    vf->priv->ctx=NULL;
+    vf->priv->w=
+    vf->priv->h=-1;
+    if(args) sscanf(args, "%d:%d",
+    &vf->priv->w,
+    &vf->priv->h);
+    printf("SwScale: %d x %d\n",
+    vf->priv->w,
+    vf->priv->h);
+    return 1;
+}
+
+vf_info_t vf_info_scale = {
+    "software scaling",
+    "scale",
+    "A'rpi",
+    "",
+    open
+};
+
+//===========================================================================//