diff options
Diffstat (limited to 'libavfilter/libmpcodecs/vf_softpulldown.c')
-rw-r--r-- | libavfilter/libmpcodecs/vf_softpulldown.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/libavfilter/libmpcodecs/vf_softpulldown.c b/libavfilter/libmpcodecs/vf_softpulldown.c new file mode 100644 index 0000000..04d1eae --- /dev/null +++ b/libavfilter/libmpcodecs/vf_softpulldown.c @@ -0,0 +1,164 @@ +/* + * 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 "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 state; + long long in; + long long out; +}; + +static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts) +{ + mp_image_t *dmpi; + int ret = 0; + int flags = mpi->fields; + int state = vf->priv->state; + + dmpi = vf_get_image(vf->next, mpi->imgfmt, + MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE | + MP_IMGFLAG_PRESERVE, mpi->width, mpi->height); + + vf->priv->in++; + + if ((state == 0 && + !(flags & MP_IMGFIELD_TOP_FIRST)) || + (state == 1 && + flags & MP_IMGFIELD_TOP_FIRST)) { + mp_msg(MSGT_VFILTER, MSGL_WARN, + "softpulldown: Unexpected field flags: state=%d top_field_first=%d repeat_first_field=%d\n", + state, + (flags & MP_IMGFIELD_TOP_FIRST) != 0, + (flags & MP_IMGFIELD_REPEAT_FIRST) != 0); + state ^= 1; + } + + if (state == 0) { + ret = vf_next_put_image(vf, mpi, MP_NOPTS_VALUE); + vf->priv->out++; + if (flags & MP_IMGFIELD_REPEAT_FIRST) { + my_memcpy_pic(dmpi->planes[0], + mpi->planes[0], mpi->w, mpi->h/2, + dmpi->stride[0]*2, mpi->stride[0]*2); + if (mpi->flags & MP_IMGFLAG_PLANAR) { + my_memcpy_pic(dmpi->planes[1], + mpi->planes[1], + mpi->chroma_width, + mpi->chroma_height/2, + dmpi->stride[1]*2, + mpi->stride[1]*2); + my_memcpy_pic(dmpi->planes[2], + mpi->planes[2], + mpi->chroma_width, + mpi->chroma_height/2, + dmpi->stride[2]*2, + mpi->stride[2]*2); + } + state=1; + } + } else { + my_memcpy_pic(dmpi->planes[0]+dmpi->stride[0], + mpi->planes[0]+mpi->stride[0], mpi->w, mpi->h/2, + dmpi->stride[0]*2, mpi->stride[0]*2); + if (mpi->flags & MP_IMGFLAG_PLANAR) { + my_memcpy_pic(dmpi->planes[1]+dmpi->stride[1], + mpi->planes[1]+mpi->stride[1], + mpi->chroma_width, mpi->chroma_height/2, + dmpi->stride[1]*2, mpi->stride[1]*2); + my_memcpy_pic(dmpi->planes[2]+dmpi->stride[2], + mpi->planes[2]+mpi->stride[2], + mpi->chroma_width, mpi->chroma_height/2, + dmpi->stride[2]*2, mpi->stride[2]*2); + } + ret = vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE); + vf->priv->out++; + if (flags & MP_IMGFIELD_REPEAT_FIRST) { + ret |= vf_next_put_image(vf, mpi, MP_NOPTS_VALUE); + vf->priv->out++; + state=0; + } else { + my_memcpy_pic(dmpi->planes[0], + mpi->planes[0], mpi->w, mpi->h/2, + dmpi->stride[0]*2, mpi->stride[0]*2); + if (mpi->flags & MP_IMGFLAG_PLANAR) { + my_memcpy_pic(dmpi->planes[1], + mpi->planes[1], + mpi->chroma_width, + mpi->chroma_height/2, + dmpi->stride[1]*2, + mpi->stride[1]*2); + my_memcpy_pic(dmpi->planes[2], + mpi->planes[2], + mpi->chroma_width, + mpi->chroma_height/2, + dmpi->stride[2]*2, + mpi->stride[2]*2); + } + } + } + + vf->priv->state = state; + + return ret; +} + +static int config(struct vf_instance *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 void uninit(struct vf_instance *vf) +{ + mp_msg(MSGT_VFILTER, MSGL_INFO, "softpulldown: %lld frames in, %lld frames out\n", vf->priv->in, vf->priv->out); + free(vf->priv); +} + +static int vf_open(vf_instance_t *vf, char *args) +{ + struct vf_priv_s *p; + vf->config = config; + vf->put_image = put_image; + vf->uninit = uninit; + vf->default_reqs = VFCAP_ACCEPT_STRIDE; + vf->priv = p = calloc(1, sizeof(struct vf_priv_s)); + vf->priv->state = 0; + return 1; +} + +const vf_info_t vf_info_softpulldown = { + "mpeg2 soft 3:2 pulldown", + "softpulldown", + "Tobias Diedrich <ranma+mplayer@tdiedrich.de>", + "", + vf_open, + NULL +}; |