diff options
Diffstat (limited to 'libmpcodecs/vf_tinterlace.c')
| -rw-r--r-- | libmpcodecs/vf_tinterlace.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/libmpcodecs/vf_tinterlace.c b/libmpcodecs/vf_tinterlace.c new file mode 100644 index 0000000000..2971ff99e8 --- /dev/null +++ b/libmpcodecs/vf_tinterlace.c @@ -0,0 +1,181 @@ +/* + Copyright (C) 2003 Michael Zucchi <notzed@ximian.com> + + 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 "../config.h" +#include "../mp_msg.h" + +#include "img_format.h" +#include "mp_image.h" +#include "vf.h" + +#include "../libvo/fastmemcpy.h" + +struct vf_priv_s { + int mode; + int frame; + mp_image_t *dmpi; +}; + +static int put_image(struct vf_instance_s* vf, mp_image_t *mpi) +{ + int ret = 0; + mp_image_t *dmpi; + + switch (vf->priv->mode) { + case 0: + dmpi = vf->priv->dmpi; + if (dmpi == NULL) { + dmpi = vf_get_image(vf->next, mpi->imgfmt, + MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE | + MP_IMGFLAG_PRESERVE | MP_IMGFLAG_READABLE, + mpi->width, mpi->height*2); + + vf->priv->dmpi = dmpi; + + memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h, + dmpi->stride[0]*2, mpi->stride[0]); + if (mpi->flags & MP_IMGFLAG_PLANAR) { + memcpy_pic(dmpi->planes[1], mpi->planes[1], + mpi->chroma_width, mpi->chroma_height, + dmpi->stride[1]*2, mpi->stride[1]); + memcpy_pic(dmpi->planes[2], mpi->planes[2], + mpi->chroma_width, mpi->chroma_height, + dmpi->stride[2]*2, mpi->stride[2]); + } + } else { + vf->priv->dmpi = NULL; + + memcpy_pic(dmpi->planes[0]+dmpi->stride[0], mpi->planes[0], mpi->w, mpi->h, + dmpi->stride[0]*2, mpi->stride[0]); + if (mpi->flags & MP_IMGFLAG_PLANAR) { + memcpy_pic(dmpi->planes[1]+dmpi->stride[1], mpi->planes[1], + mpi->chroma_width, mpi->chroma_height, + dmpi->stride[1]*2, mpi->stride[1]); + memcpy_pic(dmpi->planes[2]+dmpi->stride[2], mpi->planes[2], + mpi->chroma_width, mpi->chroma_height, + dmpi->stride[2]*2, mpi->stride[2]); + } + ret = vf_next_put_image(vf, dmpi); + } + break; + case 1: + if (vf->priv->frame & 1) + ret = vf_next_put_image(vf, mpi); + break; + case 2: + if ((vf->priv->frame & 1) == 0) + ret = vf_next_put_image(vf, mpi); + break; + case 3: + dmpi = vf_get_image(vf->next, mpi->imgfmt, + MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE, + mpi->width, mpi->height*2); + /* fixme, just clear alternate lines */ + vf_mpi_clear(dmpi, 0, 0, dmpi->w, dmpi->h); + if ((vf->priv->frame & 1) == 0) { + memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h, + dmpi->stride[0]*2, mpi->stride[0]); + if (mpi->flags & MP_IMGFLAG_PLANAR) { + memcpy_pic(dmpi->planes[1], mpi->planes[1], + mpi->chroma_width, mpi->chroma_height, + dmpi->stride[1]*2, mpi->stride[1]); + memcpy_pic(dmpi->planes[2], mpi->planes[2], + mpi->chroma_width, mpi->chroma_height, + dmpi->stride[2]*2, mpi->stride[2]); + } + } else { + memcpy_pic(dmpi->planes[0]+dmpi->stride[0], mpi->planes[0], mpi->w, mpi->h, + dmpi->stride[0]*2, mpi->stride[0]); + if (mpi->flags & MP_IMGFLAG_PLANAR) { + memcpy_pic(dmpi->planes[1]+dmpi->stride[1], mpi->planes[1], + mpi->chroma_width, mpi->chroma_height, + dmpi->stride[1]*2, mpi->stride[1]); + memcpy_pic(dmpi->planes[2]+dmpi->stride[2], mpi->planes[2], + mpi->chroma_width, mpi->chroma_height, + dmpi->stride[2]*2, mpi->stride[2]); + } + } + ret = vf_next_put_image(vf, dmpi); + break; + } + + vf->priv->frame++; + + return ret; +} + +static int query_format(struct vf_instance_s* vf, unsigned int fmt) +{ + /* FIXME - figure out which other formats work */ + switch (fmt) { + case IMGFMT_YV12: + case IMGFMT_IYUV: + case IMGFMT_I420: + return vf_next_query_format(vf, fmt); + } + return 0; +} + +static int config(struct vf_instance_s* vf, + int width, int height, int d_width, int d_height, + unsigned int flags, unsigned int outfmt) +{ + switch (vf->priv->mode) { + case 0: + case 3: + return vf_next_config(vf,width,height*2,d_width,d_height*2,flags,outfmt); + case 1: /* odd frames */ + case 2: /* even frames */ + return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt); + } + return 0; +} + +static void uninit(struct vf_instance_s* vf) +{ + free(vf->priv); +} + +static int open(vf_instance_t *vf, char* args) +{ + struct vf_priv_s *p; + vf->config = config; + vf->put_image = put_image; + vf->query_format = query_format; + vf->uninit = uninit; + vf->default_reqs = VFCAP_ACCEPT_STRIDE; + vf->priv = p = calloc(1, sizeof(struct vf_priv_s)); + vf->priv->mode = 0; + if (args) + sscanf(args, "%d", &vf->priv->mode); + vf->priv->frame = 0; + return 1; +} + +vf_info_t vf_info_tinterlace = { + "temporal field interlacing", + "tinterlace", + "Michael Zucchi", + "", + open, + NULL +}; |