diff options
Diffstat (limited to 'video/filter/vf_rotate.c')
| -rw-r--r-- | video/filter/vf_rotate.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/video/filter/vf_rotate.c b/video/filter/vf_rotate.c new file mode 100644 index 0000000000..19eeae6d35 --- /dev/null +++ b/video/filter/vf_rotate.c @@ -0,0 +1,152 @@ +/* + * 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" + +struct vf_priv_s { + int direction; +}; + +static void rotate(unsigned char* dst,unsigned char* src,int dststride,int srcstride,int w,int h,int bpp,int dir){ + int y; + if(dir&1){ + src+=srcstride*(w-1); + srcstride*=-1; + } + if(dir&2){ + dst+=dststride*(h-1); + dststride*=-1; + } + + for(y=0;y<h;y++){ + int x; + switch(bpp){ + case 1: + for(x=0;x<w;x++) dst[x]=src[y+x*srcstride]; + break; + case 2: + for(x=0;x<w;x++) *((short*)(dst+x*2))=*((short*)(src+y*2+x*srcstride)); + break; + case 3: + for(x=0;x<w;x++){ + dst[x*3+0]=src[0+y*3+x*srcstride]; + dst[x*3+1]=src[1+y*3+x*srcstride]; + dst[x*3+2]=src[2+y*3+x*srcstride]; + } + break; + case 4: + for(x=0;x<w;x++) *((int*)(dst+x*4))=*((int*)(src+y*4+x*srcstride)); + } + dst+=dststride; + } +} + +//===========================================================================// + +static int config(struct vf_instance *vf, + int width, int height, int d_width, int d_height, + unsigned int flags, unsigned int outfmt){ + if (vf->priv->direction & 4) { + if (width<height) vf->priv->direction&=3; + } + if (vf->priv->direction & 4){ + vf->put_image=vf_next_put_image; // passthru mode! + if (vf->next->draw_slice) vf->draw_slice=vf_next_draw_slice; +/* FIXME: this should be in an other procedure in vf.c; that should always check + whether the filter after the passthrough one still (not)supports slices */ + return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt); + } + return vf_next_config(vf,height,width,d_height,d_width,flags,outfmt); +} + +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->h, mpi->w); + + if(mpi->flags&MP_IMGFLAG_PLANAR){ + rotate(dmpi->planes[0],mpi->planes[0], + dmpi->stride[0],mpi->stride[0], + dmpi->w,dmpi->h,1,vf->priv->direction); + rotate(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,vf->priv->direction); + rotate(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,vf->priv->direction); + } else { + rotate(dmpi->planes[0],mpi->planes[0], + dmpi->stride[0],mpi->stride[0], + dmpi->w,dmpi->h,dmpi->bpp>>3,vf->priv->direction); + dmpi->planes[1] = mpi->planes[1]; // passthrough rgb8 palette + } + + return vf_next_put_image(vf,dmpi, pts); +} + +//===========================================================================// + +static int query_format(struct vf_instance *vf, unsigned int fmt){ + if(IMGFMT_IS_RGB(fmt) || IMGFMT_IS_BGR(fmt)) return vf_next_query_format(vf, fmt); + // we can support only symmetric (chroma_x_shift==chroma_y_shift) YUV formats: + switch(fmt) { + case IMGFMT_YV12: + case IMGFMT_I420: + case IMGFMT_IYUV: + case IMGFMT_YVU9: +// case IMGFMT_IF09: + case IMGFMT_Y8: + case IMGFMT_Y800: + case IMGFMT_444P: + return vf_next_query_format(vf, fmt); + } + return 0; +} + +static int vf_open(vf_instance_t *vf, char *args){ + vf->config=config; + vf->put_image=put_image; + vf->query_format=query_format; + vf->priv=malloc(sizeof(struct vf_priv_s)); + vf->priv->direction=args?atoi(args):0; + return 1; +} + +const vf_info_t vf_info_rotate = { + "rotate", + "rotate", + "A'rpi", + "", + vf_open, + NULL +}; + +//===========================================================================// |