mirror of https://github.com/mpv-player/mpv
153 lines
3.9 KiB
C
153 lines
3.9 KiB
C
/*
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Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
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This program 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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This program 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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, 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 <assert.h>
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#include "config.h"
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#include "mp_msg.h"
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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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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typedef struct FilterParam{
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int interleave;
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int swap;
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}FilterParam;
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struct vf_priv_s {
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FilterParam lumaParam;
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FilterParam chromaParam;
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};
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/***************************************************************************/
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static void interleave(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, int interleave, int swap){
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const int a= swap;
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const int b= 1-a;
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const int m= h>>1;
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int y;
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switch(interleave){
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case -1:
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for(y=0; y < m; y++){
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fast_memcpy(dst + dstStride* y , src + srcStride*(y*2 + a), w);
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fast_memcpy(dst + dstStride*(y + m), src + srcStride*(y*2 + b), w);
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}
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break;
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case 0:
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for(y=0; y < m; y++){
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fast_memcpy(dst + dstStride* y*2 , src + srcStride*(y*2 + a), w);
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fast_memcpy(dst + dstStride*(y*2+1), src + srcStride*(y*2 + b), w);
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}
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break;
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case 1:
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for(y=0; y < m; y++){
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fast_memcpy(dst + dstStride*(y*2+a), src + srcStride* y , w);
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fast_memcpy(dst + dstStride*(y*2+b), src + srcStride*(y + m), w);
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}
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break;
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}
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}
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static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
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int w;
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FilterParam *luma = &vf->priv->lumaParam;
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FilterParam *chroma= &vf->priv->chromaParam;
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mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
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MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
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mpi->w,mpi->h);
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if(mpi->flags&MP_IMGFLAG_PLANAR)
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w= mpi->w;
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else
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w= mpi->w * mpi->bpp/8;
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interleave(dmpi->planes[0], mpi->planes[0],
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w, mpi->h, dmpi->stride[0], mpi->stride[0], luma->interleave, luma->swap);
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if(mpi->flags&MP_IMGFLAG_PLANAR){
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int cw= mpi->w >> mpi->chroma_x_shift;
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int ch= mpi->h >> mpi->chroma_y_shift;
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interleave(dmpi->planes[1], mpi->planes[1], cw,ch,
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dmpi->stride[1], mpi->stride[1], chroma->interleave, luma->swap);
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interleave(dmpi->planes[2], mpi->planes[2], cw,ch,
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dmpi->stride[2], mpi->stride[2], chroma->interleave, luma->swap);
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}
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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 void parse(FilterParam *fp, char* args){
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char *pos;
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char *max= strchr(args, ':');
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if(!max) max= args + strlen(args);
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pos= strchr(args, 's');
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if(pos && pos<max) fp->swap=1;
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pos= strchr(args, 'i');
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if(pos && pos<max) fp->interleave=1;
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pos= strchr(args, 'd');
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if(pos && pos<max) fp->interleave=-1;
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}
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static int open(vf_instance_t *vf, char* args){
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vf->put_image=put_image;
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// vf->get_image=get_image;
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vf->priv=malloc(sizeof(struct vf_priv_s));
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memset(vf->priv, 0, sizeof(struct vf_priv_s));
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if(args)
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{
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char *arg2= strchr(args,':');
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if(arg2) parse(&vf->priv->chromaParam, arg2+1);
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parse(&vf->priv->lumaParam, args);
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}
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return 1;
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}
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vf_info_t vf_info_il = {
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"(de)interleave",
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"il",
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"Michael Niedermayer",
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"",
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open,
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NULL
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};
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//===========================================================================//
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