qp change filter

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@11922 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 190 insertions, 0 deletions

diff --git a/libmpcodecs/vf_qp.c b/libmpcodecs/vf_qp.c
new file mode 100644
index 0000000000..2e717e6c31
--- /dev/null
+++ b/libmpcodecs/vf_qp.c
@@ -0,0 +1,190 @@
+/*
+    Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
+
+    This program 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.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <inttypes.h>
+
+#include "../config.h"
+
+#ifdef USE_LIBAVCODEC
+
+#include "../mp_msg.h"
+#include "../cpudetect.h"
+
+#if 1
+double ff_eval(char *s, double *const_value, const char **const_name,
+               double (**func1)(void *, double), const char **func1_name,
+               double (**func2)(void *, double, double), char **func2_name,
+               void *opaque);
+#else
+#ifdef USE_LIBAVCODEC_SO
+#include <ffmpeg/avcodec.h>
+#include <ffmpeg/mpegvideo.h>
+#else
+#include "../libavcodec/avcodec.h"
+#include "../libavcodec/mpegvideo.h"
+#endif
+#endif
+
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
+
+#include "img_format.h"
+#include "mp_image.h"
+#include "vf.h"
+#include "../libvo/fastmemcpy.h"
+
+
+struct vf_priv_s {
+	char eq[200];
+	int8_t *qp;
+	int8_t lut[257];
+	int qp_stride;
+};
+
+static int config(struct vf_instance_s* vf,
+        int width, int height, int d_width, int d_height,
+	unsigned int flags, unsigned int outfmt){
+	int h= (height+15)>>4;
+        int i;
+
+	vf->priv->qp_stride= (width+15)>>4;
+        vf->priv->qp= malloc(vf->priv->qp_stride*h*sizeof(int8_t));
+        
+        for(i=-129; i<128; i++){
+            double const_values[]={
+                M_PI,
+                M_E,
+                i != -129,
+                i,
+                0
+            };
+            static const char *const_names[]={
+                "PI",
+                "E",
+                "known",
+                "qp",
+                NULL
+            };
+
+            vf->priv->lut[i+129]= lrintf(ff_eval(vf->priv->eq, const_values, const_names, NULL, NULL, NULL, NULL, NULL));
+        }
+
+	return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
+}
+
+static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
+    if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
+    // ok, we can do pp in-place (or pp disabled):
+    vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
+        mpi->type, mpi->flags, mpi->w, mpi->h);
+    mpi->planes[0]=vf->dmpi->planes[0];
+    mpi->stride[0]=vf->dmpi->stride[0];
+    mpi->width=vf->dmpi->width;
+    if(mpi->flags&MP_IMGFLAG_PLANAR){
+        mpi->planes[1]=vf->dmpi->planes[1];
+        mpi->planes[2]=vf->dmpi->planes[2];
+	mpi->stride[1]=vf->dmpi->stride[1];
+	mpi->stride[2]=vf->dmpi->stride[2];
+    }
+    mpi->flags|=MP_IMGFLAG_DIRECT;
+}
+
+static int put_image(struct vf_instance_s* vf, mp_image_t *mpi){
+	mp_image_t *dmpi;
+        int x,y;
+
+	if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
+		// no DR, so get a new image! hope we'll get DR buffer:
+		vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
+		MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
+		mpi->w,mpi->h);
+	}
+
+	dmpi= vf->dmpi;
+        
+	if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
+		memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h, dmpi->stride[0], mpi->stride[0]);
+    		if(mpi->flags&MP_IMGFLAG_PLANAR){
+		    memcpy_pic(dmpi->planes[1], mpi->planes[1], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[1], mpi->stride[1]);
+		    memcpy_pic(dmpi->planes[2], mpi->planes[2], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[2], mpi->stride[2]);
+		}
+	}
+        vf_clone_mpi_attributes(dmpi, mpi);
+        
+        dmpi->qscale = vf->priv->qp;
+        dmpi->qstride= vf->priv->qp_stride;
+        if(mpi->qscale){
+            for(y=0; y<((dmpi->h+15)>>4); y++){
+                for(x=0; x<vf->priv->qp_stride; x++){
+                    dmpi->qscale[x + dmpi->qstride*y]= 
+                        vf->priv->lut[ 129 + ((int8_t)mpi->qscale[x + mpi->qstride*y]) ];
+                }
+            }
+        }else{
+            int qp= vf->priv->lut[0];
+            for(y=0; y<((dmpi->h+15)>>4); y++){
+                for(x=0; x<vf->priv->qp_stride; x++){
+                    dmpi->qscale[x + dmpi->qstride*y]= qp;
+                }
+            }
+        }
+
+	return vf_next_put_image(vf,dmpi);
+}
+
+static void uninit(struct vf_instance_s* vf){
+	if(!vf->priv) return;
+
+	if(vf->priv->qp) free(vf->priv->qp);
+	vf->priv->qp= NULL;
+	
+	free(vf->priv);
+	vf->priv=NULL;
+}
+
+//===========================================================================//
+static int open(vf_instance_t *vf, char* args){
+    vf->config=config;
+    vf->put_image=put_image;
+    vf->get_image=get_image;
+    vf->uninit=uninit;
+    vf->priv=malloc(sizeof(struct vf_priv_s));
+    memset(vf->priv, 0, sizeof(struct vf_priv_s));
+    
+//    avcodec_init();
+
+    if (args) strncpy(vf->priv->eq, args, 199);
+	
+    return 1;
+}
+
+vf_info_t vf_info_qp = {
+    "QP changer",
+    "qp",
+    "Michael Niedermayer",
+    "",
+    open,
+    NULL
+};
+
+#endif //USE_LIBAVCODEC