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libavfilter/libmpcodecs/vf_yvu9.c

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00001 /*
00002  * This file is part of MPlayer.
00003  *
00004  * MPlayer is free software; you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation; either version 2 of the License, or
00007  * (at your option) any later version.
00008  *
00009  * MPlayer is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License along
00015  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
00016  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00017  */
00018 
00019 #include <stdio.h>
00020 #include <stdlib.h>
00021 #include <string.h>
00022 #include <inttypes.h>
00023 
00024 #include "config.h"
00025 #include "mp_msg.h"
00026 #include "help_mp.h"
00027 
00028 #include "img_format.h"
00029 #include "mp_image.h"
00030 #include "vf.h"
00031 
00032 #include "libvo/fastmemcpy.h"
00033 
00034 //===========================================================================//
00035 
00036 static int config(struct vf_instance *vf,
00037         int width, int height, int d_width, int d_height,
00038         unsigned int flags, unsigned int outfmt){
00039 
00040     if(vf_next_query_format(vf,IMGFMT_YV12)<=0){
00041         mp_msg(MSGT_VFILTER, MSGL_WARN, MSGTR_MPCODECS_WarnNextFilterDoesntSupport, "YVU9");
00042         return 0;
00043     }
00044 
00045     return vf_next_config(vf,width,height,d_width,d_height,flags,IMGFMT_YV12);
00046 }
00047 
00048 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
00049     mp_image_t *dmpi;
00050     int y,w,h;
00051 
00052     // hope we'll get DR buffer:
00053     dmpi=vf_get_image(vf->next,IMGFMT_YV12,
00054         MP_IMGTYPE_TEMP, 0/*MP_IMGFLAG_ACCEPT_STRIDE*/,
00055         mpi->w, mpi->h);
00056 
00057     for(y=0;y<mpi->h;y++)
00058         fast_memcpy(dmpi->planes[0]+dmpi->stride[0]*y,
00059                mpi->planes[0]+mpi->stride[0]*y,
00060                mpi->w);
00061 
00062     w=mpi->w/4; h=mpi->h/2;
00063     for(y=0;y<h;y++){
00064         unsigned char* s=mpi->planes[1]+mpi->stride[1]*(y>>1);
00065         unsigned char* d=dmpi->planes[1]+dmpi->stride[1]*y;
00066         int x;
00067         for(x=0;x<w;x++) d[2*x]=d[2*x+1]=s[x];
00068     }
00069     for(y=0;y<h;y++){
00070         unsigned char* s=mpi->planes[2]+mpi->stride[2]*(y>>1);
00071         unsigned char* d=dmpi->planes[2]+dmpi->stride[2]*y;
00072         int x;
00073         for(x=0;x<w;x++) d[2*x]=d[2*x+1]=s[x];
00074     }
00075 
00076     vf_clone_mpi_attributes(dmpi, mpi);
00077 
00078     return vf_next_put_image(vf,dmpi, pts);
00079 }
00080 
00081 //===========================================================================//
00082 
00083 static int query_format(struct vf_instance *vf, unsigned int fmt){
00084     if (fmt == IMGFMT_YVU9 || fmt == IMGFMT_IF09)
00085         return vf_next_query_format(vf,IMGFMT_YV12) & (~VFCAP_CSP_SUPPORTED_BY_HW);
00086     return 0;
00087 }
00088 
00089 static int vf_open(vf_instance_t *vf, char *args){
00090     vf->config=config;
00091     vf->put_image=put_image;
00092     vf->query_format=query_format;
00093     return 1;
00094 }
00095 
00096 const vf_info_t vf_info_yvu9 = {
00097     "fast YVU9->YV12 conversion",
00098     "yvu9",
00099     "alex",
00100     "",
00101     vf_open,
00102     NULL
00103 };
00104 
00105 //===========================================================================//
Generated on Fri Feb 1 2013 14:34:49 for FFmpeg by doxygen 1.7.1