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ffmpeg / libavfilter / libmpcodecs / vf_yvu9.c @ e4852fb3

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/*
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 * This file is part of MPlayer.
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 *
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 * MPlayer is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * MPlayer is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License along
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 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "libvo/fastmemcpy.h"
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//===========================================================================//
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static int config(struct vf_instance *vf,
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        int width, int height, int d_width, int d_height,
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        unsigned int flags, unsigned int outfmt){
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    if(vf_next_query_format(vf,IMGFMT_YV12)<=0){
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        mp_msg(MSGT_VFILTER, MSGL_WARN, MSGTR_MPCODECS_WarnNextFilterDoesntSupport, "YVU9");
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        return 0;
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    }
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    return vf_next_config(vf,width,height,d_width,d_height,flags,IMGFMT_YV12);
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}
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static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
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    mp_image_t *dmpi;
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    int y,w,h;
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    // hope we'll get DR buffer:
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    dmpi=vf_get_image(vf->next,IMGFMT_YV12,
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        MP_IMGTYPE_TEMP, 0/*MP_IMGFLAG_ACCEPT_STRIDE*/,
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        mpi->w, mpi->h);
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    for(y=0;y<mpi->h;y++)
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        fast_memcpy(dmpi->planes[0]+dmpi->stride[0]*y,
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               mpi->planes[0]+mpi->stride[0]*y,
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               mpi->w);
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    w=mpi->w/4; h=mpi->h/2;
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    for(y=0;y<h;y++){
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        unsigned char* s=mpi->planes[1]+mpi->stride[1]*(y>>1);
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        unsigned char* d=dmpi->planes[1]+dmpi->stride[1]*y;
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        int x;
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        for(x=0;x<w;x++) d[2*x]=d[2*x+1]=s[x];
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    }
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    for(y=0;y<h;y++){
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        unsigned char* s=mpi->planes[2]+mpi->stride[2]*(y>>1);
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        unsigned char* d=dmpi->planes[2]+dmpi->stride[2]*y;
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        int x;
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        for(x=0;x<w;x++) d[2*x]=d[2*x+1]=s[x];
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    }
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    vf_clone_mpi_attributes(dmpi, mpi);
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    return vf_next_put_image(vf,dmpi, pts);
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}
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//===========================================================================//
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static int query_format(struct vf_instance *vf, unsigned int fmt){
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    if (fmt == IMGFMT_YVU9 || fmt == IMGFMT_IF09)
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        return vf_next_query_format(vf,IMGFMT_YV12) & (~VFCAP_CSP_SUPPORTED_BY_HW);
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    return 0;
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}
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static int vf_open(vf_instance_t *vf, char *args){
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    vf->config=config;
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    vf->put_image=put_image;
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    vf->query_format=query_format;
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    return 1;
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}
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const vf_info_t vf_info_yvu9 = {
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    "fast YVU9->YV12 conversion",
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    "yvu9",
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    "alex",
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    "",
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    vf_open,
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    NULL
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};
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//===========================================================================//