PeerStreamer

/*

 * This file is part of MPlayer.

 *

 * MPlayer 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.

 *

 * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,

 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <inttypes.h>

#include "config.h"

#include "mp_msg.h"

#include "img_format.h"

#include "mp_image.h"

#include "vf.h"

static void mirror(unsigned char* dst,unsigned char* src,int dststride,int srcstride,int w,int h,int bpp,unsigned int fmt){

    int y;

    for(y=0;y<h;y++){

        int x;

        switch(bpp){

        case 1:

            for(x=0;x<w;x++) dst[x]=src[w-x-1];

            break;

        case 2:

            switch(fmt){

            case IMGFMT_UYVY: {

                // packed YUV is tricky. U,V are 32bpp while Y is 16bpp:

                int w2=w>>1;

                for(x=0;x<w2;x++){

                    // TODO: optimize this...

                    dst[x*4+0]=src[0+(w2-x-1)*4];

                    dst[x*4+1]=src[3+(w2-x-1)*4];

                    dst[x*4+2]=src[2+(w2-x-1)*4];

                    dst[x*4+3]=src[1+(w2-x-1)*4];

                }

                break; }

            case IMGFMT_YUY2:

            case IMGFMT_YVYU: {

                // packed YUV is tricky. U,V are 32bpp while Y is 16bpp:

                int w2=w>>1;

                for(x=0;x<w2;x++){

                    // TODO: optimize this...

                    dst[x*4+0]=src[2+(w2-x-1)*4];

                    dst[x*4+1]=src[1+(w2-x-1)*4];

                    dst[x*4+2]=src[0+(w2-x-1)*4];

                    dst[x*4+3]=src[3+(w2-x-1)*4];

                }

                break; }

            default:

                for(x=0;x<w;x++) *((short*)(dst+x*2))=*((short*)(src+(w-x-1)*2));

            }

            break;

        case 3:

            for(x=0;x<w;x++){

                dst[x*3+0]=src[0+(w-x-1)*3];

                dst[x*3+1]=src[1+(w-x-1)*3];

                dst[x*3+2]=src[2+(w-x-1)*3];

            }

            break;

        case 4:

            for(x=0;x<w;x++) *((int*)(dst+x*4))=*((int*)(src+(w-x-1)*4));

        }

        src+=srcstride;

        dst+=dststride;

    }

}

//===========================================================================//

static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){

    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,

        mpi->w, mpi->h);

    if(mpi->flags&MP_IMGFLAG_PLANAR){

               mirror(dmpi->planes[0],mpi->planes[0],

               dmpi->stride[0],mpi->stride[0],

               dmpi->w,dmpi->h,1,mpi->imgfmt);

               mirror(dmpi->planes[1],mpi->planes[1],

               dmpi->stride[1],mpi->stride[1],

               dmpi->w>>mpi->chroma_x_shift,dmpi->h>>mpi->chroma_y_shift,1,mpi->imgfmt);

               mirror(dmpi->planes[2],mpi->planes[2],

               dmpi->stride[2],mpi->stride[2],

               dmpi->w>>mpi->chroma_x_shift,dmpi->h>>mpi->chroma_y_shift,1,mpi->imgfmt);

    } else {

        mirror(dmpi->planes[0],mpi->planes[0],

               dmpi->stride[0],mpi->stride[0],

               dmpi->w,dmpi->h,dmpi->bpp>>3,mpi->imgfmt);

        dmpi->planes[1]=mpi->planes[1]; // passthrough rgb8 palette

    }

    return vf_next_put_image(vf,dmpi, pts);

}

//===========================================================================//

static int vf_open(vf_instance_t *vf, char *args){

    //vf->config=config;

    vf->put_image=put_image;

    return 1;

}

const vf_info_t vf_info_mirror = {

    "horizontal mirror",

    "mirror",

    "Eyck",

    "",

    vf_open,

    NULL

};

//===========================================================================//