| /* |
| * 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 "cpudetect.h" |
| |
| #include "img_format.h" |
| #include "mp_image.h" |
| #include "vf.h" |
| |
| #include "libvo/fastmemcpy.h" |
| |
| struct vf_priv_s { |
| int skipline; |
| int scalew; |
| int scaleh; |
| }; |
| |
| static void toright(unsigned char *dst[3], unsigned char *src[3], |
| int dststride[3], 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]; |
| int src = srcstride[k]; |
| int dst = dststride[k]; |
| 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[0] + sL[1]) / 2; |
| sL+=2; |
| } |
| for (j = dd ; j > 0; j--) { |
| *t++ = (sR[0] + sR[1]) / 2; |
| 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) { |
| fast_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 *vf, mp_image_t *mpi, double pts) |
| { |
| mp_image_t *dmpi; |
| |
| // hope we'll get DR buffer: |
| dmpi=ff_vf_get_image(vf->next, IMGFMT_YV12, |
| MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE | |
| ((vf->priv->scaleh == 1) ? MP_IMGFLAG_READABLE : 0), |
| 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 ff_vf_next_put_image(vf,dmpi, pts); |
| } |
| |
| static int config(struct vf_instance *vf, |
| int width, int height, int d_width, int d_height, |
| unsigned int flags, unsigned int outfmt) |
| { |
| /* FIXME - also support UYVY output? */ |
| return ff_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 *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 ff_vf_next_query_format(vf, IMGFMT_YV12); |
| } |
| return 0; |
| } |
| |
| static void uninit(struct vf_instance *vf) |
| { |
| free(vf->priv); |
| } |
| |
| static int vf_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:%d:%d", &vf->priv->skipline, &vf->priv->scalew, &vf->priv->scaleh); |
| |
| return 1; |
| } |
| |
| const vf_info_t ff_vf_info_down3dright = { |
| "convert stereo movie from top-bottom to left-right field", |
| "down3dright", |
| "Zdenek Kabelac", |
| "", |
| vf_open, |
| NULL |
| }; |