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author | michael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2003-02-11 21:44:55 +0000 |
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committer | michael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2003-02-11 21:44:55 +0000 |
commit | 17e458ffe2e0c8b343edc8632bb7ab439aba7813 (patch) | |
tree | 9211001fbfe1a4372f8e6767d9d65b882dda6359 /libmpcodecs/vf_down3dright.c | |
parent | 10917f93e10c3eb1bc9d18d3161619deb3388980 (diff) | |
download | mpv-17e458ffe2e0c8b343edc8632bb7ab439aba7813.tar.bz2 mpv-17e458ffe2e0c8b343edc8632bb7ab439aba7813.tar.xz |
down3dright filter by kabi (converts between 2 common stereoscopic systems)
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9405 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libmpcodecs/vf_down3dright.c')
-rw-r--r-- | libmpcodecs/vf_down3dright.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/libmpcodecs/vf_down3dright.c b/libmpcodecs/vf_down3dright.c new file mode 100644 index 0000000000..c142c05675 --- /dev/null +++ b/libmpcodecs/vf_down3dright.c @@ -0,0 +1,144 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> + +#include "../config.h" +#include "../mp_msg.h" +#include "../cpudetect.h" + +#include "img_format.h" +#include "mp_image.h" +#include "vf.h" + +#include "../libvo/fastmemcpy.h" +#include "../postproc/rgb2rgb.h" + +struct vf_priv_s { + int skipline; + int scalew; + int scaleh; +}; + +static void toright(unsigned char *dst[3], unsigned char *src[3], + unsigned int dststride[3], unsigned int srcstride[3], + int w, int h, struct vf_priv_s* p) +{ + int k; + + for (k = 0; k < 3; k++) { + unsigned char* fromL = src[k]; + unsigned char* fromR = src[k]; + unsigned char* to = dst[k]; + unsigned int src = srcstride[k]; + unsigned int dst = dststride[k]; + unsigned int ss; + unsigned int dd; + int i; + + if (k > 0) { + i = h / 4 - p->skipline / 2; + ss = src * (h / 4 + p->skipline / 2); + dd = w / 4; + } else { + i = h / 2 - p->skipline; + ss = src * (h / 2 + p->skipline); + dd = w / 2; + } + fromR += ss; + for ( ; i > 0; i--) { + int j; + unsigned char* t = to; + unsigned char* sL = fromL; + unsigned char* sR = fromR; + + if (p->scalew == 1) { + for (j = dd; j > 0; j--) + *t++ = (*sL++ + *sL++) / 2; + for (j = dd ; j > 0; j--) + *t++ = (*sR++ + *sR++) / 2; + } else { + for (j = dd * 2 ; j > 0; j--) + *t++ = *sL++; + for (j = dd * 2 ; j > 0; j--) + *t++ = *sR++; + } + if (p->scaleh == 1) { + memcpy(to + dst, to, dst); + to += dst; + } + to += dst; + fromL += src; + fromR += src; + } + //printf("K %d %d %d %d %d \n", k, w, h, src, dst); + } +} + +static int put_image(struct vf_instance_s* vf, mp_image_t *mpi) +{ + mp_image_t *dmpi; + + // hope we'll get DR buffer: + dmpi=vf_get_image(vf->next, IMGFMT_YV12, + MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE, + mpi->w * vf->priv->scalew, + mpi->h / vf->priv->scaleh - vf->priv->skipline); + + toright(dmpi->planes, mpi->planes, dmpi->stride, + mpi->stride, mpi->w, mpi->h, vf->priv); + + return vf_next_put_image(vf,dmpi); +} + +static int config(struct vf_instance_s* vf, + int width, int height, int d_width, int d_height, + unsigned int flags, unsigned int outfmt) +{ + /* FIXME - also support UYVY output? */ + return vf_next_config(vf, width * vf->priv->scalew, + height / vf->priv->scaleh - vf->priv->skipline, d_width, d_height, flags, IMGFMT_YV12); +} + + +static int query_format(struct vf_instance_s* vf, unsigned int fmt) +{ + /* FIXME - really any YUV 4:2:0 input format should work */ + switch (fmt) { + case IMGFMT_YV12: + case IMGFMT_IYUV: + case IMGFMT_I420: + return vf_next_query_format(vf, IMGFMT_YV12); + } + return 0; +} + +static void uninit(struct vf_instance_s* vf) +{ + free(vf->priv); +} + +static int open(vf_instance_t *vf, char* args) +{ + vf->config=config; + vf->query_format=query_format; + vf->put_image=put_image; + vf->uninit=uninit; + + vf->priv = calloc(1, sizeof (struct vf_priv_s)); + vf->priv->skipline = 0; + vf->priv->scalew = 1; + vf->priv->scaleh = 2; + if (args) sscanf(args, "%d", &vf->priv->skipline); + + return 1; +} + +vf_info_t vf_info_down3dright = { + "convert stereo movie from top-bottom to left-right field", + "down3dright", + "Zdenek Kabelac", + "", + open +}; + |