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-rw-r--r--video/filter/vf_down3dright.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/video/filter/vf_down3dright.c b/video/filter/vf_down3dright.c
new file mode 100644
index 0000000000..561bc898d0
--- /dev/null
+++ b/video/filter/vf_down3dright.c
@@ -0,0 +1,166 @@
+/*
+ * 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) {
+ 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=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 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 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 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 vf_info_down3dright = {
+ "convert stereo movie from top-bottom to left-right field",
+ "down3dright",
+ "Zdenek Kabelac",
+ "",
+ vf_open,
+ NULL
+};