diff options
Diffstat (limited to 'libmpcodecs/vf_il.c')
-rw-r--r-- | libmpcodecs/vf_il.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/libmpcodecs/vf_il.c b/libmpcodecs/vf_il.c new file mode 100644 index 0000000000..7d12e2e395 --- /dev/null +++ b/libmpcodecs/vf_il.c @@ -0,0 +1,164 @@ +/* + Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at> + + This program 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. + + This program 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 this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> +#include <assert.h> + +#include "../config.h" +#include "../mp_msg.h" + +#ifdef HAVE_MALLOC_H +#include <malloc.h> +#endif + +#include "img_format.h" +#include "mp_image.h" +#include "vf.h" +#include "../libvo/fastmemcpy.h" + + +//===========================================================================// + + +struct vf_priv_s { + int interleave; + int chroma; + int swap; +}; + + +/***************************************************************************/ + + +static int config(struct vf_instance_s* vf, + int width, int height, int d_width, int d_height, + unsigned int flags, unsigned int outfmt){ + + return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt); +} + +static int 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++){ + memcpy(dst + dstStride* y , src + srcStride*(y*2 + a), w); + memcpy(dst + dstStride*(y + m), src + srcStride*(y*2 + b), w); + } + break; + case 0: + for(y=0; y < m; y++){ + memcpy(dst + dstStride* y*2 , src + srcStride*(y*2 + a), w); + memcpy(dst + dstStride*(y*2+1), src + srcStride*(y*2 + b), w); + } + break; + case 1: + for(y=0; y < m; y++){ + memcpy(dst + dstStride*(y*2+a), src + srcStride* y , w); + memcpy(dst + dstStride*(y*2+b), src + srcStride*(y + m), w); + } + break; + } +} + +static int put_image(struct vf_instance_s* vf, mp_image_t *mpi){ + int w; + + 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], vf->priv->interleave, vf->priv->swap); + + if(mpi->flags&MP_IMGFLAG_PLANAR){ + int cw= mpi->w >> mpi->chroma_x_shift; + int ch= mpi->h >> mpi->chroma_y_shift; + + + if(vf->priv->chroma){ + interleave(dmpi->planes[1], mpi->planes[1], cw,ch, + dmpi->stride[1], mpi->stride[1], vf->priv->interleave, vf->priv->swap); + interleave(dmpi->planes[2], mpi->planes[2], cw,ch, + dmpi->stride[2], mpi->stride[2], vf->priv->interleave, vf->priv->swap); + }else{ + int y; + for(y=0; y < ch; y++) + memcpy(dmpi->planes[1] + dmpi->stride[1]*y, mpi->planes[1] + mpi->stride[1]*y, cw); + for(y=0; y < ch; y++) + memcpy(dmpi->planes[2] + dmpi->stride[2]*y, mpi->planes[2] + mpi->stride[2]*y, cw); + } + } + + return vf_next_put_image(vf,dmpi); +} + +//===========================================================================// + +static int query_format(struct vf_instance_s* vf, unsigned int fmt){ + /* we support all formats :) */ + return vf_next_query_format(vf, fmt); +} + +static int open(vf_instance_t *vf, char* args){ + char *pos, *max; + + vf->config=config; + vf->put_image=put_image; +// vf->get_image=get_image; + vf->query_format=query_format; + vf->priv=malloc(sizeof(struct vf_priv_s)); + memset(vf->priv, 0, sizeof(struct vf_priv_s)); + + if(args==NULL) return 0; + + max= args + strlen(args); + + pos= strchr(args, 's'); + if(pos && pos<max) vf->priv->swap=1; + pos= strchr(args, 'c'); + if(pos && pos<max) vf->priv->chroma=1; + pos= strchr(args, 'i'); + if(pos && pos<max) vf->priv->interleave=1; + pos= strchr(args, 'd'); + if(pos && pos<max) vf->priv->interleave=-1; + + return 1; +} + +vf_info_t vf_info_il = { + "(de)interleave", + "il", + "Michael Niedermayer", + "", + open +}; + +//===========================================================================// |