colorspace conversion support

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5524 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 56 insertions, 2 deletions

diff --git a/libmpcodecs/vf_scale.c b/libmpcodecs/vf_scale.c
index 0f58137178..407151f82d 100644
--- a/libmpcodecs/vf_scale.c
+++ b/libmpcodecs/vf_scale.c
@@ -6,6 +6,7 @@
 #include "../config.h"
 #include "../mp_msg.h"
 
+#include "../libvo/img_format.h"
 #include "../mp_image.h"
 #include "vf.h"
 
@@ -14,25 +15,58 @@
 
 struct vf_priv_s {
     int w,h;
+    unsigned int fmt;
     SwsContext *ctx;
 };
 
 //===========================================================================//
 
+static unsigned int outfmt_list[]={
+    IMGFMT_BGR32,
+    IMGFMT_BGR24,
+    IMGFMT_BGR16,
+    IMGFMT_BGR15,
+    IMGFMT_YV12,
+    IMGFMT_I420,
+    IMGFMT_IYUV,
+    NULL
+};
+
 static int config(struct vf_instance_s* vf,
         int width, int height, int d_width, int d_height,
 	unsigned int flags, unsigned int outfmt){
+    unsigned int* p=outfmt_list;
+    unsigned int best=0;
+    // find the best outfmt:
+    while(*p){
+	int ret=vf_next_query_format(vf,*p);
+	mp_msg(MSGT_VFILTER,MSGL_V,"scale: query(%s) -> %d\n",vo_format_name(*p),ret&3);
+	if(ret&2){ best=*p; break;} // no conversion -> bingo!
+	if(ret&1 && !best) best=*p; // best with conversion
+	++p;
+    }
+    if(!best){
+	printf("SwScale: no supported outfmt found :(\n");
+	return 0;
+    }
+
     // calculate the missing parameters:
     if(vf->priv->w<=0) vf->priv->w=width;
     if(vf->priv->h<=0) vf->priv->h=height;
+    
+    printf("SwScale scaling %dx%d %s to %dx%d %s  \n",
+	width,height,vo_format_name(outfmt),
+	vf->priv->w,vf->priv->h,vo_format_name(best));
+    
     // new swscaler:
     vf->priv->ctx=getSwsContextFromCmdLine(width,height,outfmt,
-		  vf->priv->w,vf->priv->h,outfmt);
+		  vf->priv->w,vf->priv->h,best);
     if(!vf->priv->ctx){
 	// error...
 	printf("Couldn't init SwScaler for this setup\n");
 	return 0;
     }
+    vf->priv->fmt=best;
     return vf_next_config(vf,vf->priv->w,vf->priv->h,d_width,d_height,flags,outfmt);
 }
 
@@ -40,7 +74,7 @@ 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,
+    dmpi=vf_get_image(vf->next,vf->priv->fmt,
 	MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
 	vf->priv->w, vf->priv->h);
     
@@ -51,6 +85,26 @@ static void put_image(struct vf_instance_s* vf, mp_image_t *mpi){
 
 //===========================================================================//
 
+//  supported Input formats: YV12, I420, IYUV, YUY2, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8, Y800
+
+static int query_format(struct vf_instance_s* vf, unsigned int fmt){
+    switch(fmt){
+    case IMGFMT_YV12:
+    case IMGFMT_I420:
+    case IMGFMT_IYUV:
+    case IMGFMT_YUY2:
+    case IMGFMT_BGR32:
+    case IMGFMT_BGR24:
+    case IMGFMT_BGR16:
+    case IMGFMT_BGR15:
+    case IMGFMT_RGB32:
+    case IMGFMT_RGB24:
+    case IMGFMT_Y800:
+	return 3; //vf_next_query_format(vf,fmt);
+    }
+    return 0;
+}
+
 static int open(vf_instance_t *vf, char* args){
     vf->config=config;
     vf->put_image=put_image;