diff options
Diffstat (limited to 'libavfilter/libmpcodecs/vf_il.c')
-rw-r--r-- | libavfilter/libmpcodecs/vf_il.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/libavfilter/libmpcodecs/vf_il.c b/libavfilter/libmpcodecs/vf_il.c new file mode 100644 index 0000000..210e30d --- /dev/null +++ b/libavfilter/libmpcodecs/vf_il.c @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at> + * + * 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 <assert.h> + +#include "mp_msg.h" +#include "img_format.h" +#include "mp_image.h" +#include "vf.h" +#include "libvo/fastmemcpy.h" + + +//===========================================================================// + +typedef struct FilterParam{ + int interleave; + int swap; +}FilterParam; + +struct vf_priv_s { + FilterParam lumaParam; + FilterParam chromaParam; +}; + +/***************************************************************************/ + +static void interleave(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, int interleave, int swap){ + const int a= swap; + const int b= 1-a; + const int m= h>>1; + int y; + + switch(interleave){ + case -1: + for(y=0; y < m; y++){ + fast_memcpy(dst + dstStride* y , src + srcStride*(y*2 + a), w); + fast_memcpy(dst + dstStride*(y + m), src + srcStride*(y*2 + b), w); + } + break; + case 0: + for(y=0; y < m; y++){ + fast_memcpy(dst + dstStride* y*2 , src + srcStride*(y*2 + a), w); + fast_memcpy(dst + dstStride*(y*2+1), src + srcStride*(y*2 + b), w); + } + break; + case 1: + for(y=0; y < m; y++){ + fast_memcpy(dst + dstStride*(y*2+a), src + srcStride* y , w); + fast_memcpy(dst + dstStride*(y*2+b), src + srcStride*(y + m), w); + } + break; + } +} + +static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){ + int w; + FilterParam *luma = &vf->priv->lumaParam; + FilterParam *chroma= &vf->priv->chromaParam; + + mp_image_t *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) + w= mpi->w; + else + w= mpi->w * mpi->bpp/8; + + interleave(dmpi->planes[0], mpi->planes[0], + w, mpi->h, dmpi->stride[0], mpi->stride[0], luma->interleave, luma->swap); + + if(mpi->flags&MP_IMGFLAG_PLANAR){ + int cw= mpi->w >> mpi->chroma_x_shift; + int ch= mpi->h >> mpi->chroma_y_shift; + + interleave(dmpi->planes[1], mpi->planes[1], cw,ch, + dmpi->stride[1], mpi->stride[1], chroma->interleave, luma->swap); + interleave(dmpi->planes[2], mpi->planes[2], cw,ch, + dmpi->stride[2], mpi->stride[2], chroma->interleave, luma->swap); + } + + return vf_next_put_image(vf,dmpi, pts); +} + +//===========================================================================// + +static void parse(FilterParam *fp, char* args){ + char *pos; + char *max= strchr(args, ':'); + + if(!max) max= args + strlen(args); + + pos= strchr(args, 's'); + if(pos && pos<max) fp->swap=1; + pos= strchr(args, 'i'); + if(pos && pos<max) fp->interleave=1; + pos= strchr(args, 'd'); + if(pos && pos<max) fp->interleave=-1; +} + +static int vf_open(vf_instance_t *vf, char *args){ + + vf->put_image=put_image; +// vf->get_image=get_image; + vf->priv=malloc(sizeof(struct vf_priv_s)); + memset(vf->priv, 0, sizeof(struct vf_priv_s)); + + if(args) + { + char *arg2= strchr(args,':'); + if(arg2) parse(&vf->priv->chromaParam, arg2+1); + parse(&vf->priv->lumaParam, args); + } + + return 1; +} + +const vf_info_t vf_info_il = { + "(de)interleave", + "il", + "Michael Niedermayer", + "", + vf_open, + NULL +}; + +//===========================================================================// |