From 46ca153401ef3852b8870f491c0358b74c6c108b Mon Sep 17 00:00:00 2001 From: rfelker Date: Wed, 28 Apr 2004 04:29:17 +0000 Subject: soft skipping for mencoder. rather than skipping decoding/filtering frames that will be skipped, mencoded tells vf_softskip (if present) that it should drop the next frame. this allows filters that need to see every input frame (inverse telecine, denoise3d, ...) to see skipped frames before they get dropped. in principle, a smarter softskip filter could be written that would buffer frames and choose to drop the one with least change, rather than strictly dropping the next one. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12338 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libmpcodecs/vf_softskip.c | 85 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 libmpcodecs/vf_softskip.c (limited to 'libmpcodecs/vf_softskip.c') diff --git a/libmpcodecs/vf_softskip.c b/libmpcodecs/vf_softskip.c new file mode 100644 index 0000000000..1ef864f73f --- /dev/null +++ b/libmpcodecs/vf_softskip.c @@ -0,0 +1,85 @@ +#include +#include +#include + +#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 skipflag; +}; + +static int put_image(struct vf_instance_s* vf, mp_image_t *mpi) +{ + mp_image_t *dmpi; + + if (vf->priv->skipflag) + return vf->priv->skipflag = 0; + + dmpi = vf_get_image(vf->next, mpi->imgfmt, + MP_IMGTYPE_EXPORT, 0, mpi->width, mpi->height); + + dmpi->planes[0] = mpi->planes[0]; + dmpi->stride[0] = mpi->stride[0]; + if (dmpi->flags&MP_IMGFLAG_PLANAR) { + dmpi->planes[1] = mpi->planes[1]; + dmpi->stride[1] = mpi->stride[1]; + dmpi->planes[2] = mpi->planes[2]; + dmpi->stride[2] = mpi->stride[2]; + } + + return vf_next_put_image(vf, dmpi); +} + +static int control(struct vf_instance_s* vf, int request, void* data) +{ + switch (request) { + case VFCTRL_SKIP_NEXT_FRAME: + vf->priv->skipflag = 1; + return CONTROL_TRUE; + } + return vf_next_control(vf, request, data); +} + +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 void uninit(struct vf_instance_s* vf) +{ + free(vf->priv); +} + +static int open(vf_instance_t *vf, char* args) +{ + vf->put_image = put_image; + vf->control = control; + vf->uninit = uninit; + vf->priv = calloc(1, sizeof(struct vf_priv_s)); + return 1; +} + +vf_info_t vf_info_softskip = { + "soft (post-filter) frame skipping for encoding", + "softskip", + "Rich Felker", + "", + open, + NULL +}; + + -- cgit v1.2.3