libavfilter/libmpcodecs: add vf_stereo3d support

(code from mplayer see their svn for detailed authorship)
parameters must be integers as we do not have mplayers parser
also the stuff passed to it through non constant globals is not supported
this should be fixed in mplayer first.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

3 files changed, 514 insertions, 1 deletions

diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index f1f04068bb..5fc0e48e6d 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -134,6 +134,7 @@ OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_smartblur.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_softpulldown.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_softskip.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_spp.o
+OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_stereo3d.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_swapuv.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_telecine.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_tile.o
diff --git a/libavfilter/libmpcodecs/vf_stereo3d.c b/libavfilter/libmpcodecs/vf_stereo3d.c
new file mode 100644
index 0000000000..b8bc390cfe
--- /dev/null
+++ b/libavfilter/libmpcodecs/vf_stereo3d.c
@@ -0,0 +1,512 @@
+/*
+ * Copyright (C) 2010 Gordon Schmidt <gordon.schmidt <at> s2000.tu-chemnitz.de>
+ *
+ * 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.
+ */
+
+//==includes==//
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "config.h"
+#include "mp_msg.h"
+#include "help_mp.h"
+
+#include "img_format.h"
+#include "mp_image.h"
+#include "vf.h"
+
+#include "libavutil/common.h"
+#include "libvo/fastmemcpy.h"
+
+//==types==//
+typedef enum stereo_code {
+    ANAGLYPH_RC_GRAY,   //anaglyph red/cyan gray
+    ANAGLYPH_RC_HALF,   //anaglyph red/cyan half colored
+    ANAGLYPH_RC_COLOR,  //anaglyph red/cyan colored
+    ANAGLYPH_RC_DUBOIS, //anaglyph red/cyan dubois
+    ANAGLYPH_GM_GRAY,   //anaglyph green/magenta gray
+    ANAGLYPH_GM_HALF,   //anaglyph green/magenta half colored
+    ANAGLYPH_GM_COLOR,  //anaglyph green/magenta colored
+    ANAGLYPH_YB_GRAY,   //anaglyph yellow/blue gray
+    ANAGLYPH_YB_HALF,   //anaglyph yellow/blue half colored
+    ANAGLYPH_YB_COLOR,  //anaglyph yellow/blue colored
+    MONO_L,             //mono output for debugging (left eye only)
+    MONO_R,             //mono output for debugging (right eye only)
+    SIDE_BY_SIDE_LR,    //side by side parallel (left eye left, right eye right)
+    SIDE_BY_SIDE_RL,    //side by side crosseye (right eye left, left eye right)
+    SIDE_BY_SIDE_2_LR,  //side by side parallel with half width resolution
+    SIDE_BY_SIDE_2_RL,  //side by side crosseye with half width resolution
+    ABOVE_BELOW_LR,     //above-below (left eye above, right eye below)
+    ABOVE_BELOW_RL,     //above-below (right eye above, left eye below)
+    ABOVE_BELOW_2_LR,   //above-below with half height resolution
+    ABOVE_BELOW_2_RL,   //above-below with half height resolution
+    INTERLEAVE_ROWS_LR, //row-interleave (left eye has top row)
+    INTERLEAVE_ROWS_RL, //row-interleave (right eye has top row)
+    STEREO_CODE_COUNT   //no value set - TODO: needs autodetection
+} stereo_code;
+
+typedef struct component {
+    stereo_code  fmt;
+    unsigned int width;
+    unsigned int height;
+    unsigned int off_left;
+    unsigned int off_right;
+    unsigned int row_left;
+    unsigned int row_right;
+} component;
+
+//==global variables==//
+static const int ana_coeff[10][3][6] = {
+    {{19595, 38470,  7471,     0,     0,     0},    //ANAGLYPH_RC_GRAY
+     {    0,     0,     0, 19595, 38470,  7471},
+     {    0,     0,     0, 19595, 38470,  7471}},
+    {{19595, 38470,  7471,     0,     0,     0},    //ANAGLYPH_RC_HALF
+     {    0,     0,     0,     0, 65536,     0},
+     {    0,     0,     0,     0,     0, 65536}},
+    {{65536,     0,     0,     0,     0,     0},    //ANAGLYPH_RC_COLOR
+     {    0,     0,     0,     0, 65536,     0},
+     {    0,     0,     0,     0,     0, 65536}},
+    {{29891, 32800, 11559, -2849, -5763,  -102},    //ANAGLYPH_RC_DUBOIS
+     {-2627, -2479, -1033, 24804, 48080, -1209},
+     { -997, -1350,  -358, -4729, -7403, 80373}},
+    {{    0,     0,     0, 19595, 38470,  7471},    //ANAGLYPH_GM_GRAY
+     {19595, 38470,  7471,     0,     0,     0},
+     {    0,     0,     0, 19595, 38470,  7471}},
+    {{    0,     0,     0, 65536,     0,     0},    //ANAGLYPH_GM_HALF
+     {19595, 38470,  7471,     0,     0,     0},
+     {    0,     0,     0,     0,     0, 65536}},
+    {{    0,     0,     0, 65536,     0,     0},    //ANAGLYPH_GM_COLOR
+     {    0, 65536,     0,     0,     0,     0},
+     {    0,     0,     0,     0,     0, 65536}},
+    {{    0,     0,     0, 19595, 38470,  7471},    //ANAGLYPH_YB_GRAY
+     {    0,     0,     0, 19595, 38470,  7471},
+     {19595, 38470,  7471,     0,     0,     0}},
+    {{    0,     0,     0, 65536,     0,     0},    //ANAGLYPH_YB_HALF
+     {    0,     0,     0,     0, 65536,     0},
+     {19595, 38470,  7471,     0,     0,     0}},
+    {{    0,     0,     0, 65536,     0,     0},    //ANAGLYPH_YB_COLOR
+     {    0,     0,     0,     0, 65536,     0},
+     {    0,     0, 65536,     0,     0,     0}}
+};
+
+struct vf_priv_s {
+    component in;
+    component out;
+    int ana_matrix[3][6];
+    unsigned int width;
+    unsigned int height;
+    unsigned int row_step;
+} const vf_priv_default = {
+  {SIDE_BY_SIDE_LR},
+  {ANAGLYPH_RC_DUBOIS}
+};
+
+//==functions==//
+static inline uint8_t ana_convert(int coeff[6], uint8_t left[3], uint8_t right[3])
+{
+    int sum;
+
+    sum  = coeff[0] * left[0] + coeff[3] * right[0]; //red in
+    sum += coeff[1] * left[1] + coeff[4] * right[1]; //green in
+    sum += coeff[2] * left[2] + coeff[5] * right[2]; //blue in
+    return av_clip_uint8(sum >> 16);
+}
+
+static int config(struct vf_instance *vf, int width, int height, int d_width,
+                  int d_height, unsigned int flags, unsigned int outfmt)
+{
+    if ((width & 1) || (height & 1)) {
+        mp_msg(MSGT_VFILTER, MSGL_WARN, "[stereo3d] invalid height or width\n");
+        return 0;
+    }
+    //default input values
+    vf->priv->width             = width;
+    vf->priv->height            = height;
+    vf->priv->row_step          = 1;
+    vf->priv->in.width          = width;
+    vf->priv->in.height         = height;
+    vf->priv->in.off_left       = 0;
+    vf->priv->in.off_right      = 0;
+    vf->priv->in.row_left       = 0;
+    vf->priv->in.row_right      = 0;
+
+    //check input format
+    switch (vf->priv->in.fmt) {
+    case SIDE_BY_SIDE_2_LR:
+        d_width                *= 2;
+    case SIDE_BY_SIDE_LR:
+        vf->priv->width         = width / 2;
+        vf->priv->in.off_right  = vf->priv->width * 3;
+        break;
+    case SIDE_BY_SIDE_2_RL:
+        d_width                *= 2;
+    case SIDE_BY_SIDE_RL:
+        vf->priv->width         = width / 2;
+        vf->priv->in.off_left   = vf->priv->width * 3;
+        break;
+    case ABOVE_BELOW_2_LR:
+        d_height               *= 2;
+    case ABOVE_BELOW_LR:
+        vf->priv->height        = height / 2;
+        vf->priv->in.row_right  = vf->priv->height;
+        break;
+    case ABOVE_BELOW_2_RL:
+        d_height               *= 2;
+    case ABOVE_BELOW_RL:
+        vf->priv->height        = height / 2;
+        vf->priv->in.row_left   = vf->priv->height;
+        break;
+    default:
+        mp_msg(MSGT_VFILTER, MSGL_WARN,
+               "[stereo3d] stereo format of input is not supported\n");
+        return 0;
+        break;
+    }
+    //default output values
+    vf->priv->out.width         = vf->priv->width;
+    vf->priv->out.height        = vf->priv->height;
+    vf->priv->out.off_left      = 0;
+    vf->priv->out.off_right     = 0;
+    vf->priv->out.row_left      = 0;
+    vf->priv->out.row_right     = 0;
+
+    //check output format
+    switch (vf->priv->out.fmt) {
+    case ANAGLYPH_RC_GRAY:
+    case ANAGLYPH_RC_HALF:
+    case ANAGLYPH_RC_COLOR:
+    case ANAGLYPH_RC_DUBOIS:
+    case ANAGLYPH_GM_GRAY:
+    case ANAGLYPH_GM_HALF:
+    case ANAGLYPH_GM_COLOR:
+    case ANAGLYPH_YB_GRAY:
+    case ANAGLYPH_YB_HALF:
+    case ANAGLYPH_YB_COLOR:
+        memcpy(vf->priv->ana_matrix, ana_coeff[vf->priv->out.fmt],
+               sizeof(vf->priv->ana_matrix));
+        break;
+    case SIDE_BY_SIDE_2_LR:
+        d_width                /= 2;
+    case SIDE_BY_SIDE_LR:
+        vf->priv->out.width     = vf->priv->width * 2;
+        vf->priv->out.off_right = vf->priv->width * 3;
+        break;
+    case SIDE_BY_SIDE_2_RL:
+        d_width                /= 2;
+    case SIDE_BY_SIDE_RL:
+        vf->priv->out.width     = vf->priv->width * 2;
+        vf->priv->out.off_left  = vf->priv->width * 3;
+        break;
+    case ABOVE_BELOW_2_LR:
+        d_height               /= 2;
+    case ABOVE_BELOW_LR:
+        vf->priv->out.height    = vf->priv->height * 2;
+        vf->priv->out.row_right = vf->priv->height;
+        break;
+    case ABOVE_BELOW_2_RL:
+        d_height               /= 2;
+    case ABOVE_BELOW_RL:
+        vf->priv->out.height    = vf->priv->height * 2;
+        vf->priv->out.row_left  = vf->priv->height;
+        break;
+    case INTERLEAVE_ROWS_LR:
+        vf->priv->row_step      = 2;
+        vf->priv->height        = vf->priv->height / 2;
+        vf->priv->out.off_right = vf->priv->width * 3;
+        vf->priv->in.off_right += vf->priv->in.width * 3;
+        break;
+    case INTERLEAVE_ROWS_RL:
+        vf->priv->row_step      = 2;
+        vf->priv->height        = vf->priv->height / 2;
+        vf->priv->out.off_left  = vf->priv->width * 3;
+        vf->priv->in.off_left  += vf->priv->in.width * 3;
+        break;
+    case MONO_R:
+        //same as MONO_L only needs switching of input offsets
+        vf->priv->in.off_left   = vf->priv->in.off_right;
+        vf->priv->in.row_left   = vf->priv->in.row_right;
+        //nobreak;
+    case MONO_L:
+        //use default settings
+        break;
+    default:
+        mp_msg(MSGT_VFILTER, MSGL_WARN,
+            "[stereo3d] stereo format of output is not supported\n");
+        return 0;
+        break;
+    }
+//    if (!opt_screen_size_x && !opt_screen_size_y) {
+        d_width     = d_width  * vf->priv->out.width  / width;
+        d_height    = d_height * vf->priv->out.height / height;
+//    }
+
+    return vf_next_config(vf, vf->priv->out.width, vf->priv->out.height,
+                          d_width, d_height, flags, outfmt);
+}
+
+static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
+{
+    mp_image_t *dmpi;
+    if (vf->priv->in.fmt == vf->priv->out.fmt) { //nothing to do
+        dmpi = mpi;
+    } else {
+        int out_off_left, out_off_right;
+        int in_off_left  = vf->priv->in.row_left   * mpi->stride[0]  +
+                           vf->priv->in.off_left;
+        int in_off_right = vf->priv->in.row_right  * mpi->stride[0]  +
+                           vf->priv->in.off_right;
+
+        dmpi = vf_get_image(vf->next, IMGFMT_RGB24, MP_IMGTYPE_TEMP,
+                            MP_IMGFLAG_ACCEPT_STRIDE,
+                            vf->priv->out.width, vf->priv->out.height);
+        out_off_left   = vf->priv->out.row_left  * dmpi->stride[0] +
+                         vf->priv->out.off_left;
+        out_off_right  = vf->priv->out.row_right * dmpi->stride[0] +
+                         vf->priv->out.off_right;
+
+        switch (vf->priv->out.fmt) {
+        case SIDE_BY_SIDE_LR:
+        case SIDE_BY_SIDE_RL:
+        case SIDE_BY_SIDE_2_LR:
+        case SIDE_BY_SIDE_2_RL:
+        case ABOVE_BELOW_LR:
+        case ABOVE_BELOW_RL:
+        case ABOVE_BELOW_2_LR:
+        case ABOVE_BELOW_2_RL:
+        case INTERLEAVE_ROWS_LR:
+        case INTERLEAVE_ROWS_RL:
+            memcpy_pic2(dmpi->planes[0] + out_off_left,
+                       mpi->planes[0] + in_off_left,
+                       3 * vf->priv->width,
+                       vf->priv->height,
+                       dmpi->stride[0] * vf->priv->row_step,
+                       mpi->stride[0] * vf->priv->row_step,
+                       vf->priv->row_step != 1);
+            memcpy_pic2(dmpi->planes[0] + out_off_right,
+                       mpi->planes[0] + in_off_right,
+                       3 * vf->priv->width,
+                       vf->priv->height,
+                       dmpi->stride[0] * vf->priv->row_step,
+                       mpi->stride[0] * vf->priv->row_step,
+                       vf->priv->row_step != 1);
+            break;
+        case MONO_L:
+        case MONO_R:
+            memcpy_pic(dmpi->planes[0],
+                       mpi->planes[0] + in_off_left,
+                       3 * vf->priv->width,
+                       vf->priv->height,
+                       dmpi->stride[0],
+                       mpi->stride[0]);
+            break;
+        case ANAGLYPH_RC_GRAY:
+        case ANAGLYPH_RC_HALF:
+        case ANAGLYPH_RC_COLOR:
+        case ANAGLYPH_RC_DUBOIS:
+        case ANAGLYPH_GM_GRAY:
+        case ANAGLYPH_GM_HALF:
+        case ANAGLYPH_GM_COLOR:
+        case ANAGLYPH_YB_GRAY:
+        case ANAGLYPH_YB_HALF:
+        case ANAGLYPH_YB_COLOR: {
+            int i,x,y,il,ir,o;
+            unsigned char *source     = mpi->planes[0];
+            unsigned char *dest       = dmpi->planes[0];
+            unsigned int   out_width  = vf->priv->out.width;
+            int           *ana_matrix[3];
+
+            for(i = 0; i < 3; i++)
+                ana_matrix[i] = vf->priv->ana_matrix[i];
+
+            for (y = 0; y < vf->priv->out.height; y++) {
+                o   = dmpi->stride[0] * y;
+                il  = in_off_left  + y * mpi->stride[0];
+                ir  = in_off_right + y * mpi->stride[0];
+                for (x = 0; x < out_width; x++) {
+                    dest[o    ]  = ana_convert(
+                                   ana_matrix[0], source + il, source + ir); //red out
+                    dest[o + 1]  = ana_convert(
+                                   ana_matrix[1], source + il, source + ir); //green out
+                    dest[o + 2]  = ana_convert(
+                                   ana_matrix[2], source + il, source + ir); //blue out
+                    il += 3;
+                    ir += 3;
+                    o  += 3;
+                }
+            }
+            break;
+        }
+        default:
+            mp_msg(MSGT_VFILTER, MSGL_WARN,
+                   "[stereo3d] stereo format of output is not supported\n");
+            return 0;
+            break;
+        }
+    }
+    return vf_next_put_image(vf, dmpi, pts);
+}
+
+static int query_format(struct vf_instance *vf, unsigned int fmt)
+{
+    switch (fmt)
+    case IMGFMT_RGB24:
+        return vf_next_query_format(vf, fmt);
+    return 0;
+}
+
+static void uninit(vf_instance_t *vf)
+{
+    free(vf->priv);
+}
+
+static int vf_open(vf_instance_t *vf, char *args)
+{
+    vf->config          = config;
+    vf->uninit          = uninit;
+    vf->put_image       = put_image;
+    vf->query_format    = query_format;
+    vf->priv=malloc(sizeof(struct vf_priv_s));
+    memset(vf->priv, 0, sizeof(struct vf_priv_s));
+
+    vf->priv->in.fmt = SIDE_BY_SIDE_LR;
+    vf->priv->out.fmt= ANAGLYPH_RC_DUBOIS;
+    if (args) sscanf(args, "%d:%d", &vf->priv->in.fmt, &vf->priv->out.fmt);
+
+    return 1;
+}
+#if 0
+///Presets usage
+static const struct format_preset {
+  char* name;
+  stereo_code scode;
+} vf_format_presets_defs[] = {
+    {"arcg",                             ANAGLYPH_RC_GRAY},
+    {"anaglyph_red_cyan_gray",           ANAGLYPH_RC_GRAY},
+    {"arch",                             ANAGLYPH_RC_HALF},
+    {"anaglyph_red_cyan_half_color",     ANAGLYPH_RC_HALF},
+    {"arcc",                             ANAGLYPH_RC_COLOR},
+    {"anaglyph_red_cyan_color",          ANAGLYPH_RC_COLOR},
+    {"arcd",                             ANAGLYPH_RC_DUBOIS},
+    {"anaglyph_red_cyan_dubios",         ANAGLYPH_RC_DUBOIS},
+    {"agmg",                             ANAGLYPH_GM_GRAY},
+    {"anaglyph_green_magenta_gray",      ANAGLYPH_GM_GRAY},
+    {"agmh",                             ANAGLYPH_GM_HALF},
+    {"anaglyph_green_magenta_half_color",ANAGLYPH_GM_HALF},
+    {"agmc",                             ANAGLYPH_GM_COLOR},
+    {"anaglyph_green_magenta_color",     ANAGLYPH_GM_COLOR},
+    {"aybg",                             ANAGLYPH_YB_GRAY},
+    {"anaglyph_yellow_blue_gray",        ANAGLYPH_YB_GRAY},
+    {"aybh",                             ANAGLYPH_YB_HALF},
+    {"anaglyph_yellow_blue_half_color",  ANAGLYPH_YB_HALF},
+    {"aybc",                             ANAGLYPH_YB_COLOR},
+    {"anaglyph_yellow_blue_color",       ANAGLYPH_YB_COLOR},
+    {"ml",                               MONO_L},
+    {"mono_left",                        MONO_L},
+    {"mr",                               MONO_R},
+    {"mono_right",                       MONO_R},
+    {"sbsl",                             SIDE_BY_SIDE_LR},
+    {"side_by_side_left_first",          SIDE_BY_SIDE_LR},
+    {"sbsr",                             SIDE_BY_SIDE_RL},
+    {"side_by_side_right_first",         SIDE_BY_SIDE_RL},
+    {"sbs2l",                              SIDE_BY_SIDE_2_LR},
+    {"side_by_side_half_width_left_first", SIDE_BY_SIDE_2_LR},
+    {"sbs2r",                              SIDE_BY_SIDE_2_RL},
+    {"side_by_side_half_width_right_first",SIDE_BY_SIDE_2_RL},
+    {"abl",                              ABOVE_BELOW_LR},
+    {"above_below_left_first",           ABOVE_BELOW_LR},
+    {"abr",                              ABOVE_BELOW_RL},
+    {"above_below_right_first",          ABOVE_BELOW_RL},
+    {"ab2l",                               ABOVE_BELOW_2_LR},
+    {"above_below_half_height_left_first", ABOVE_BELOW_2_LR},
+    {"ab2r",                               ABOVE_BELOW_2_RL},
+    {"above_below_half_height_right_first",ABOVE_BELOW_2_RL},
+    {"irl",                                INTERLEAVE_ROWS_LR},
+    {"interleave_rows_left_first",         INTERLEAVE_ROWS_LR},
+    {"irr",                                INTERLEAVE_ROWS_RL},
+    {"interleave_rows_right_first",        INTERLEAVE_ROWS_RL},
+    { NULL, 0}
+};
+
+#define ST_OFF(f) M_ST_OFF(struct format_preset,f)
+static const m_option_t vf_format_preset_fields_in[] = {
+  {"in", ST_OFF(scode), CONF_TYPE_INT, 0,0,0, NULL},
+  { NULL, NULL, 0, 0, 0, 0,  NULL }
+};
+static const m_option_t vf_format_preset_fields_out[] = {
+  {"out", ST_OFF(scode), CONF_TYPE_INT, 0,0,0, NULL},
+  { NULL, NULL, 0, 0, 0, 0,  NULL }
+};
+
+static const m_struct_t vf_format_preset_in = {
+  "stereo_format_preset_in",
+  sizeof(struct format_preset),
+  NULL,
+  vf_format_preset_fields_in
+};
+static const m_struct_t vf_format_preset_out = {
+  "stereo_format_preset_out",
+  sizeof(struct format_preset),
+  NULL,
+  vf_format_preset_fields_out
+};
+
+static const m_struct_t vf_opts;
+static const m_obj_presets_t format_preset_in = {
+  (struct m_struct_st*)&vf_format_preset_in,
+  (struct m_struct_st*)&vf_opts,
+  (struct format_preset*)vf_format_presets_defs,
+  ST_OFF(name)
+};
+static const m_obj_presets_t format_preset_out = {
+  (struct m_struct_st*)&vf_format_preset_out,
+  (struct m_struct_st*)&vf_opts,
+  (struct format_preset*)vf_format_presets_defs,
+  ST_OFF(name)
+};
+
+/// Now the options
+#undef ST_OFF
+#define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
+static const m_option_t vf_opts_fields[] = {
+  {"stereo_in", 0, CONF_TYPE_OBJ_PRESETS, 0, 0, 0,
+                   (m_obj_presets_t*)&format_preset_in},
+  {"stereo_out", 0, CONF_TYPE_OBJ_PRESETS, 0, 0, 0,
+                    (m_obj_presets_t*)&format_preset_out},
+  {"in", ST_OFF(in.fmt), CONF_TYPE_INT, 0,0,0, NULL},
+  {"out", ST_OFF(out.fmt), CONF_TYPE_INT, 0,0,0, NULL},
+  { NULL, NULL, 0, 0, 0, 0,  NULL }
+};
+
+static const m_struct_t vf_opts = {
+  "stereo3d",
+  sizeof(struct vf_priv_s),
+  &vf_priv_default,
+  vf_opts_fields
+};
+#endif
+
+//==info struct==//
+const vf_info_t vf_info_stereo3d = {
+    "stereoscopic 3d view",
+    "stereo3d",
+    "Gordon Schmidt",
+    "view stereoscopic videos",
+    vf_open,
+//    &vf_opts
+};
diff --git a/libavfilter/vf_mp.c b/libavfilter/vf_mp.c
index a2447047e8..36e0c1227e 100644
--- a/libavfilter/vf_mp.c
+++ b/libavfilter/vf_mp.c
@@ -237,6 +237,7 @@ static const vf_info_t* const filters[]={
     &vf_info_softpulldown,
     &vf_info_softskip,
     &vf_info_spp,
+    &vf_info_stereo3d,
     &vf_info_swapuv,
     &vf_info_telecine,
     &vf_info_tile,
@@ -265,7 +266,6 @@ lavcdeint
 noformat
 pp
 scale
-stereo3d
 tfields
 vo
 yadif