yading@10: /*
yading@10:  * Copyright (c) 2010 Gordon Schmidt <gordon.schmidt <at> s2000.tu-chemnitz.de>
yading@10:  * Copyright (c) 2013 Paul B Mahol
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
yading@10:  * GNU General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU General Public License along
yading@10:  * with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #include "libavutil/avassert.h"
yading@10: #include "libavutil/imgutils.h"
yading@10: #include "libavutil/opt.h"
yading@10: #include "libavutil/parseutils.h"
yading@10: #include "libavutil/pixdesc.h"
yading@10: #include "avfilter.h"
yading@10: #include "formats.h"
yading@10: #include "internal.h"
yading@10: #include "video.h"
yading@10: 
yading@10: enum StereoCode {
yading@10:     ANAGLYPH_RC_GRAY,   // anaglyph red/cyan gray
yading@10:     ANAGLYPH_RC_HALF,   // anaglyph red/cyan half colored
yading@10:     ANAGLYPH_RC_COLOR,  // anaglyph red/cyan colored
yading@10:     ANAGLYPH_RC_DUBOIS, // anaglyph red/cyan dubois
yading@10:     ANAGLYPH_GM_GRAY,   // anaglyph green/magenta gray
yading@10:     ANAGLYPH_GM_HALF,   // anaglyph green/magenta half colored
yading@10:     ANAGLYPH_GM_COLOR,  // anaglyph green/magenta colored
yading@10:     ANAGLYPH_GM_DUBOIS, // anaglyph green/magenta dubois
yading@10:     ANAGLYPH_YB_GRAY,   // anaglyph yellow/blue gray
yading@10:     ANAGLYPH_YB_HALF,   // anaglyph yellow/blue half colored
yading@10:     ANAGLYPH_YB_COLOR,  // anaglyph yellow/blue colored
yading@10:     ANAGLYPH_YB_DUBOIS, // anaglyph yellow/blue dubois
yading@10:     ANAGLYPH_RB_GRAY,   // anaglyph red/blue gray
yading@10:     ANAGLYPH_RG_GRAY,   // anaglyph red/green gray
yading@10:     MONO_L,             // mono output for debugging (left eye only)
yading@10:     MONO_R,             // mono output for debugging (right eye only)
yading@10:     INTERLEAVE_ROWS_LR, // row-interleave (left eye has top row)
yading@10:     INTERLEAVE_ROWS_RL, // row-interleave (right eye has top row)
yading@10:     SIDE_BY_SIDE_LR,    // side by side parallel (left eye left, right eye right)
yading@10:     SIDE_BY_SIDE_RL,    // side by side crosseye (right eye left, left eye right)
yading@10:     SIDE_BY_SIDE_2_LR,  // side by side parallel with half width resolution
yading@10:     SIDE_BY_SIDE_2_RL,  // side by side crosseye with half width resolution
yading@10:     ABOVE_BELOW_LR,     // above-below (left eye above, right eye below)
yading@10:     ABOVE_BELOW_RL,     // above-below (right eye above, left eye below)
yading@10:     ABOVE_BELOW_2_LR,   // above-below with half height resolution
yading@10:     ABOVE_BELOW_2_RL,   // above-below with half height resolution
yading@10:     STEREO_CODE_COUNT   // TODO: needs autodetection
yading@10: };
yading@10: 
yading@10: typedef struct StereoComponent {
yading@10:     enum StereoCode format;
yading@10:     int width, height;
yading@10:     int off_left, off_right;
yading@10:     int off_lstep, off_rstep;
yading@10:     int row_left, row_right;
yading@10: } StereoComponent;
yading@10: 
yading@10: static const int ana_coeff[][3][6] = {
yading@10:   [ANAGLYPH_RB_GRAY]   =
yading@10:     {{19595, 38470,  7471,     0,     0,     0},
yading@10:      {    0,     0,     0,     0,     0,     0},
yading@10:      {    0,     0,     0, 19595, 38470,  7471}},
yading@10:   [ANAGLYPH_RG_GRAY]   =
yading@10:     {{19595, 38470,  7471,     0,     0,     0},
yading@10:      {    0,     0,     0, 19595, 38470,  7471},
yading@10:      {    0,     0,     0,     0,     0,     0}},
yading@10:   [ANAGLYPH_RC_GRAY]   =
yading@10:     {{19595, 38470,  7471,     0,     0,     0},
yading@10:      {    0,     0,     0, 19595, 38470,  7471},
yading@10:      {    0,     0,     0, 19595, 38470,  7471}},
yading@10:   [ANAGLYPH_RC_HALF]   =
yading@10:     {{19595, 38470,  7471,     0,     0,     0},
yading@10:      {    0,     0,     0,     0, 65536,     0},
yading@10:      {    0,     0,     0,     0,     0, 65536}},
yading@10:   [ANAGLYPH_RC_COLOR]  =
yading@10:     {{65536,     0,     0,     0,     0,     0},
yading@10:      {    0,     0,     0,     0, 65536,     0},
yading@10:      {    0,     0,     0,     0,     0, 65536}},
yading@10:   [ANAGLYPH_RC_DUBOIS] =
yading@10:     {{29891, 32800, 11559, -2849, -5763,  -102},
yading@10:      {-2627, -2479, -1033, 24804, 48080, -1209},
yading@10:      { -997, -1350,  -358, -4729, -7403, 80373}},
yading@10:   [ANAGLYPH_GM_GRAY]   =
yading@10:     {{    0,     0,     0, 19595, 38470,  7471},
yading@10:      {19595, 38470,  7471,     0,     0,     0},
yading@10:      {    0,     0,     0, 19595, 38470,  7471}},
yading@10:   [ANAGLYPH_GM_HALF]   =
yading@10:     {{    0,     0,     0, 65536,     0,     0},
yading@10:      {19595, 38470,  7471,     0,     0,     0},
yading@10:      {    0,     0,     0,     0,     0, 65536}},
yading@10:   [ANAGLYPH_GM_COLOR]  =
yading@10:     {{    0,     0,     0, 65536,     0,     0},
yading@10:      {    0, 65536,     0,     0,     0,     0},
yading@10:      {    0,     0,     0,     0,     0, 65536}},
yading@10:   [ANAGLYPH_GM_DUBOIS]  =
yading@10:     {{-4063,-10354, -2556, 34669, 46203,  1573},
yading@10:      {18612, 43778,  9372, -1049,  -983, -4260},
yading@10:      { -983, -1769,  1376,   590,  4915, 61407}},
yading@10:   [ANAGLYPH_YB_GRAY]   =
yading@10:     {{    0,     0,     0, 19595, 38470,  7471},
yading@10:      {    0,     0,     0, 19595, 38470,  7471},
yading@10:      {19595, 38470,  7471,     0,     0,     0}},
yading@10:   [ANAGLYPH_YB_HALF]   =
yading@10:     {{    0,     0,     0, 65536,     0,     0},
yading@10:      {    0,     0,     0,     0, 65536,     0},
yading@10:      {19595, 38470,  7471,     0,     0,     0}},
yading@10:   [ANAGLYPH_YB_COLOR]  =
yading@10:     {{    0,     0,     0, 65536,     0,     0},
yading@10:      {    0,     0,     0,     0, 65536,     0},
yading@10:      {    0,     0, 65536,     0,     0,     0}},
yading@10:   [ANAGLYPH_YB_DUBOIS] =
yading@10:     {{65535,-12650,18451,   -987, -7590, -1049},
yading@10:      {-1604, 56032, 4196,    370,  3826, -1049},
yading@10:      {-2345,-10676, 1358,   5801, 11416, 56217}},
yading@10: };
yading@10: 
yading@10: typedef struct Stereo3DContext {
yading@10:     const AVClass *class;
yading@10:     StereoComponent in, out;
yading@10:     int width, height;
yading@10:     int row_step;
yading@10:     int ana_matrix[3][6];
yading@10:     int nb_planes;
yading@10:     int linesize[4];
yading@10:     int pixstep[4];
yading@10: } Stereo3DContext;
yading@10: 
yading@10: #define OFFSET(x) offsetof(Stereo3DContext, x)
yading@10: #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
yading@10: 
yading@10: static const AVOption stereo3d_options[] = {
yading@10:     { "in",    "set input format",  OFFSET(in.format),  AV_OPT_TYPE_INT, {.i64=SIDE_BY_SIDE_LR}, SIDE_BY_SIDE_LR, ABOVE_BELOW_2_RL, FLAGS, "in"},
yading@10:     { "ab2l",  "above below half height left first",  0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_LR},  0, 0, FLAGS, "in" },
yading@10:     { "ab2r",  "above below half height right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_RL},  0, 0, FLAGS, "in" },
yading@10:     { "abl",   "above below left first",              0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_LR},    0, 0, FLAGS, "in" },
yading@10:     { "abr",   "above below right first",             0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_RL},    0, 0, FLAGS, "in" },
yading@10:     { "sbs2l", "side by side half width left first",  0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_LR}, 0, 0, FLAGS, "in" },
yading@10:     { "sbs2r", "side by side half width right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_RL}, 0, 0, FLAGS, "in" },
yading@10:     { "sbsl",  "side by side left first",             0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_LR},   0, 0, FLAGS, "in" },
yading@10:     { "sbsr",  "side by side right first",            0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_RL},   0, 0, FLAGS, "in" },
yading@10:     { "out",   "set output format", OFFSET(out.format), AV_OPT_TYPE_INT, {.i64=ANAGLYPH_RC_DUBOIS}, 0, STEREO_CODE_COUNT-1, FLAGS, "out"},
yading@10:     { "ab2l",  "above below half height left first",  0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_LR},   0, 0, FLAGS, "out" },
yading@10:     { "ab2r",  "above below half height right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_RL},   0, 0, FLAGS, "out" },
yading@10:     { "abl",   "above below left first",              0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_LR},     0, 0, FLAGS, "out" },
yading@10:     { "abr",   "above below right first",             0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_RL},     0, 0, FLAGS, "out" },
yading@10:     { "agmc",  "anaglyph green magenta color",        0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_COLOR},  0, 0, FLAGS, "out" },
yading@10:     { "agmd",  "anaglyph green magenta dubois",       0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_DUBOIS}, 0, 0, FLAGS, "out" },
yading@10:     { "agmg",  "anaglyph green magenta gray",         0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_GRAY},   0, 0, FLAGS, "out" },
yading@10:     { "agmh",  "anaglyph green magenta half color",   0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_HALF},   0, 0, FLAGS, "out" },
yading@10:     { "arbg",  "anaglyph red blue gray",              0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RB_GRAY},   0, 0, FLAGS, "out" },
yading@10:     { "arcc",  "anaglyph red cyan color",             0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_COLOR},  0, 0, FLAGS, "out" },
yading@10:     { "arcd",  "anaglyph red cyan dubois",            0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_DUBOIS}, 0, 0, FLAGS, "out" },
yading@10:     { "arcg",  "anaglyph red cyan gray",              0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_GRAY},   0, 0, FLAGS, "out" },
yading@10:     { "arch",  "anaglyph red cyan half color",        0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_HALF},   0, 0, FLAGS, "out" },
yading@10:     { "argg",  "anaglyph red green gray",             0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RG_GRAY},   0, 0, FLAGS, "out" },
yading@10:     { "aybc",  "anaglyph yellow blue color",          0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_COLOR},  0, 0, FLAGS, "out" },
yading@10:     { "aybd",  "anaglyph yellow blue dubois",         0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_DUBOIS}, 0, 0, FLAGS, "out" },
yading@10:     { "aybg",  "anaglyph yellow blue gray",           0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_GRAY},   0, 0, FLAGS, "out" },
yading@10:     { "aybh",  "anaglyph yellow blue half color",     0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_HALF},   0, 0, FLAGS, "out" },
yading@10:     { "irl",   "interleave rows left first",          0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_LR}, 0, 0, FLAGS, "out" },
yading@10:     { "irr",   "interleave rows right first",         0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_RL}, 0, 0, FLAGS, "out" },
yading@10:     { "ml",    "mono left",                           0, AV_OPT_TYPE_CONST, {.i64=MONO_L},             0, 0, FLAGS, "out" },
yading@10:     { "mr",    "mono right",                          0, AV_OPT_TYPE_CONST, {.i64=MONO_R},             0, 0, FLAGS, "out" },
yading@10:     { "sbs2l", "side by side half width left first",  0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_LR},  0, 0, FLAGS, "out" },
yading@10:     { "sbs2r", "side by side half width right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_RL},  0, 0, FLAGS, "out" },
yading@10:     { "sbsl",  "side by side left first",             0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_LR},    0, 0, FLAGS, "out" },
yading@10:     { "sbsr",  "side by side right first",            0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_RL},    0, 0, FLAGS, "out" },
yading@10:     {NULL},
yading@10: };
yading@10: 
yading@10: AVFILTER_DEFINE_CLASS(stereo3d);
yading@10: 
yading@10: static const enum AVPixelFormat anaglyph_pix_fmts[] = { AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE };
yading@10: static const enum AVPixelFormat other_pix_fmts[] = {
yading@10:     AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
yading@10:     AV_PIX_FMT_RGB48BE, AV_PIX_FMT_BGR48BE,
yading@10:     AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE,
yading@10:     AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_BGRA64BE,
yading@10:     AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE,
yading@10:     AV_PIX_FMT_RGBA,  AV_PIX_FMT_BGRA,
yading@10:     AV_PIX_FMT_ARGB,  AV_PIX_FMT_ABGR,
yading@10:     AV_PIX_FMT_RGB0,  AV_PIX_FMT_BGR0,
yading@10:     AV_PIX_FMT_0RGB,  AV_PIX_FMT_0BGR,
yading@10:     AV_PIX_FMT_GBRP,
yading@10:     AV_PIX_FMT_GBRP9BE,  AV_PIX_FMT_GBRP9LE,
yading@10:     AV_PIX_FMT_GBRP10BE, AV_PIX_FMT_GBRP10LE,
yading@10:     AV_PIX_FMT_GBRP12BE, AV_PIX_FMT_GBRP12LE,
yading@10:     AV_PIX_FMT_GBRP14BE, AV_PIX_FMT_GBRP14LE,
yading@10:     AV_PIX_FMT_GBRP16BE, AV_PIX_FMT_GBRP16LE,
yading@10:     AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
yading@10:     AV_PIX_FMT_YUVJ444P,
yading@10:     AV_PIX_FMT_YUV444P9LE,  AV_PIX_FMT_YUVA444P9LE,
yading@10:     AV_PIX_FMT_YUV444P9BE,  AV_PIX_FMT_YUVA444P9BE,
yading@10:     AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUVA444P10LE,
yading@10:     AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUVA444P10BE,
yading@10:     AV_PIX_FMT_YUV444P12BE,  AV_PIX_FMT_YUV444P12LE,
yading@10:     AV_PIX_FMT_YUV444P14BE,  AV_PIX_FMT_YUV444P14LE,
yading@10:     AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE,
yading@10:     AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE,
yading@10:     AV_PIX_FMT_NONE
yading@10: };
yading@10: 
yading@10: static int query_formats(AVFilterContext *ctx)
yading@10: {
yading@10:     Stereo3DContext *s = ctx->priv;
yading@10:     const enum AVPixelFormat *pix_fmts;
yading@10: 
yading@10:     switch (s->out.format) {
yading@10:     case ANAGLYPH_GM_COLOR:
yading@10:     case ANAGLYPH_GM_DUBOIS:
yading@10:     case ANAGLYPH_GM_GRAY:
yading@10:     case ANAGLYPH_GM_HALF:
yading@10:     case ANAGLYPH_RB_GRAY:
yading@10:     case ANAGLYPH_RC_COLOR:
yading@10:     case ANAGLYPH_RC_DUBOIS:
yading@10:     case ANAGLYPH_RC_GRAY:
yading@10:     case ANAGLYPH_RC_HALF:
yading@10:     case ANAGLYPH_RG_GRAY:
yading@10:     case ANAGLYPH_YB_COLOR:
yading@10:     case ANAGLYPH_YB_DUBOIS:
yading@10:     case ANAGLYPH_YB_GRAY:
yading@10:     case ANAGLYPH_YB_HALF:
yading@10:         pix_fmts = anaglyph_pix_fmts;
yading@10:         break;
yading@10:     default:
yading@10:         pix_fmts = other_pix_fmts;
yading@10:     }
yading@10: 
yading@10:     ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int config_output(AVFilterLink *outlink)
yading@10: {
yading@10:     AVFilterContext *ctx = outlink->src;
yading@10:     AVFilterLink *inlink = ctx->inputs[0];
yading@10:     Stereo3DContext *s = ctx->priv;
yading@10:     AVRational aspect = inlink->sample_aspect_ratio;
yading@10:     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
yading@10:     int ret;
yading@10: 
yading@10:     switch (s->in.format) {
yading@10:     case SIDE_BY_SIDE_2_LR:
yading@10:     case SIDE_BY_SIDE_LR:
yading@10:     case SIDE_BY_SIDE_2_RL:
yading@10:     case SIDE_BY_SIDE_RL:
yading@10:         if (inlink->w & 1) {
yading@10:             av_log(ctx, AV_LOG_ERROR, "width must be even\n");
yading@10:             return AVERROR_INVALIDDATA;
yading@10:         }
yading@10:         break;
yading@10:     case ABOVE_BELOW_2_LR:
yading@10:     case ABOVE_BELOW_LR:
yading@10:     case ABOVE_BELOW_2_RL:
yading@10:     case ABOVE_BELOW_RL:
yading@10:         if (s->out.format == INTERLEAVE_ROWS_LR ||
yading@10:             s->out.format == INTERLEAVE_ROWS_RL) {
yading@10:             if (inlink->h & 3) {
yading@10:                 av_log(ctx, AV_LOG_ERROR, "height must be multiple of 4\n");
yading@10:                 return AVERROR_INVALIDDATA;
yading@10:             }
yading@10:         }
yading@10:         if (inlink->h & 1) {
yading@10:             av_log(ctx, AV_LOG_ERROR, "height must be even\n");
yading@10:             return AVERROR_INVALIDDATA;
yading@10:         }
yading@10:         break;
yading@10:     }
yading@10: 
yading@10:     s->in.width     =
yading@10:     s->width        = inlink->w;
yading@10:     s->in.height    =
yading@10:     s->height       = inlink->h;
yading@10:     s->row_step     = 1;
yading@10:     s->in.off_lstep =
yading@10:     s->in.off_rstep =
yading@10:     s->in.off_left  =
yading@10:     s->in.off_right =
yading@10:     s->in.row_left  =
yading@10:     s->in.row_right = 0;
yading@10: 
yading@10:     switch (s->in.format) {
yading@10:     case SIDE_BY_SIDE_2_LR:
yading@10:         aspect.num     *= 2;
yading@10:     case SIDE_BY_SIDE_LR:
yading@10:         s->width        = inlink->w / 2;
yading@10:         s->in.off_right = s->width;
yading@10:         break;
yading@10:     case SIDE_BY_SIDE_2_RL:
yading@10:         aspect.num     *= 2;
yading@10:     case SIDE_BY_SIDE_RL:
yading@10:         s->width        = inlink->w / 2;
yading@10:         s->in.off_left  = s->width;
yading@10:         break;
yading@10:     case ABOVE_BELOW_2_LR:
yading@10:         aspect.den     *= 2;
yading@10:     case ABOVE_BELOW_LR:
yading@10:         s->in.row_right =
yading@10:         s->height       = inlink->h / 2;
yading@10:         break;
yading@10:     case ABOVE_BELOW_2_RL:
yading@10:         aspect.den     *= 2;
yading@10:     case ABOVE_BELOW_RL:
yading@10:         s->in.row_left  =
yading@10:         s->height       = inlink->h / 2;
yading@10:         break;
yading@10:     default:
yading@10:         av_log(ctx, AV_LOG_ERROR, "input format %d is not supported\n", s->in.format);
yading@10:         return AVERROR(EINVAL);
yading@10:     }
yading@10: 
yading@10:     s->out.width     = s->width;
yading@10:     s->out.height    = s->height;
yading@10:     s->out.off_lstep =
yading@10:     s->out.off_rstep =
yading@10:     s->out.off_left  =
yading@10:     s->out.off_right =
yading@10:     s->out.row_left  =
yading@10:     s->out.row_right = 0;
yading@10: 
yading@10:     switch (s->out.format) {
yading@10:     case ANAGLYPH_RB_GRAY:
yading@10:     case ANAGLYPH_RG_GRAY:
yading@10:     case ANAGLYPH_RC_GRAY:
yading@10:     case ANAGLYPH_RC_HALF:
yading@10:     case ANAGLYPH_RC_COLOR:
yading@10:     case ANAGLYPH_RC_DUBOIS:
yading@10:     case ANAGLYPH_GM_GRAY:
yading@10:     case ANAGLYPH_GM_HALF:
yading@10:     case ANAGLYPH_GM_COLOR:
yading@10:     case ANAGLYPH_GM_DUBOIS:
yading@10:     case ANAGLYPH_YB_GRAY:
yading@10:     case ANAGLYPH_YB_HALF:
yading@10:     case ANAGLYPH_YB_COLOR:
yading@10:     case ANAGLYPH_YB_DUBOIS:
yading@10:         memcpy(s->ana_matrix, ana_coeff[s->out.format], sizeof(s->ana_matrix));
yading@10:         break;
yading@10:     case SIDE_BY_SIDE_2_LR:
yading@10:         aspect.num      /= 2;
yading@10:     case SIDE_BY_SIDE_LR:
yading@10:         s->out.width     = s->width * 2;
yading@10:         s->out.off_right = s->width;
yading@10:         break;
yading@10:     case SIDE_BY_SIDE_2_RL:
yading@10:         aspect.num      /= 2;
yading@10:     case SIDE_BY_SIDE_RL:
yading@10:         s->out.width     = s->width * 2;
yading@10:         s->out.off_left  = s->width;
yading@10:         break;
yading@10:     case ABOVE_BELOW_2_LR:
yading@10:         aspect.den      /= 2;
yading@10:     case ABOVE_BELOW_LR:
yading@10:         s->out.height    = s->height * 2;
yading@10:         s->out.row_right = s->height;
yading@10:         break;
yading@10:     case ABOVE_BELOW_2_RL:
yading@10:         aspect.den      /= 2;
yading@10:     case ABOVE_BELOW_RL:
yading@10:         s->out.height    = s->height * 2;
yading@10:         s->out.row_left  = s->height;
yading@10:         break;
yading@10:     case INTERLEAVE_ROWS_LR:
yading@10:         s->row_step      = 2;
yading@10:         s->height        = s->height / 2;
yading@10:         s->out.off_rstep =
yading@10:         s->in.off_rstep  = 1;
yading@10:         break;
yading@10:     case INTERLEAVE_ROWS_RL:
yading@10:         s->row_step      = 2;
yading@10:         s->height        = s->height / 2;
yading@10:         s->out.off_lstep =
yading@10:         s->in.off_lstep  = 1;
yading@10:         break;
yading@10:     case MONO_R:
yading@10:         s->in.off_left   = s->in.off_right;
yading@10:         s->in.row_left   = s->in.row_right;
yading@10:     case MONO_L:
yading@10:         break;
yading@10:     default:
yading@10:         av_log(ctx, AV_LOG_ERROR, "output format is not supported\n");
yading@10:         return AVERROR(EINVAL);
yading@10:     }
yading@10: 
yading@10:     outlink->w = s->out.width;
yading@10:     outlink->h = s->out.height;
yading@10:     outlink->sample_aspect_ratio = aspect;
yading@10: 
yading@10:     if ((ret = av_image_fill_linesizes(s->linesize, outlink->format, s->width)) < 0)
yading@10:         return ret;
yading@10:     s->nb_planes = av_pix_fmt_count_planes(outlink->format);
yading@10:     av_image_fill_max_pixsteps(s->pixstep, NULL, desc);
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static inline uint8_t ana_convert(const int *coeff, uint8_t *left, uint8_t *right)
yading@10: {
yading@10:     int sum;
yading@10: 
yading@10:     sum  = coeff[0] * left[0] + coeff[3] * right[0]; //red in
yading@10:     sum += coeff[1] * left[1] + coeff[4] * right[1]; //green in
yading@10:     sum += coeff[2] * left[2] + coeff[5] * right[2]; //blue in
yading@10: 
yading@10:     return av_clip_uint8(sum >> 16);
yading@10: }
yading@10: 
yading@10: static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
yading@10: {
yading@10:     AVFilterContext *ctx  = inlink->dst;
yading@10:     Stereo3DContext *s = ctx->priv;
yading@10:     AVFilterLink *outlink = ctx->outputs[0];
yading@10:     AVFrame *out;
yading@10:     int out_off_left[4], out_off_right[4];
yading@10:     int in_off_left[4], in_off_right[4];
yading@10:     int i;
yading@10: 
yading@10:     out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
yading@10:     if (!out) {
yading@10:         av_frame_free(&inpicref);
yading@10:         return AVERROR(ENOMEM);
yading@10:     }
yading@10:     av_frame_copy_props(out, inpicref);
yading@10: 
yading@10:     for (i = 0; i < 4; i++) {
yading@10:         in_off_left[i]   = (s->in.row_left   + s->in.off_lstep)  * inpicref->linesize[i] + s->in.off_left   * s->pixstep[i];
yading@10:         in_off_right[i]  = (s->in.row_right  + s->in.off_rstep)  * inpicref->linesize[i] + s->in.off_right  * s->pixstep[i];
yading@10:         out_off_left[i]  = (s->out.row_left  + s->out.off_lstep) * out->linesize[i]      + s->out.off_left  * s->pixstep[i];
yading@10:         out_off_right[i] = (s->out.row_right + s->out.off_rstep) * out->linesize[i]      + s->out.off_right * s->pixstep[i];
yading@10:     }
yading@10: 
yading@10:     switch (s->out.format) {
yading@10:     case SIDE_BY_SIDE_LR:
yading@10:     case SIDE_BY_SIDE_RL:
yading@10:     case SIDE_BY_SIDE_2_LR:
yading@10:     case SIDE_BY_SIDE_2_RL:
yading@10:     case ABOVE_BELOW_LR:
yading@10:     case ABOVE_BELOW_RL:
yading@10:     case ABOVE_BELOW_2_LR:
yading@10:     case ABOVE_BELOW_2_RL:
yading@10:     case INTERLEAVE_ROWS_LR:
yading@10:     case INTERLEAVE_ROWS_RL:
yading@10:         for (i = 0; i < s->nb_planes; i++) {
yading@10:             av_image_copy_plane(out->data[i] + out_off_left[i],
yading@10:                                 out->linesize[i] * s->row_step,
yading@10:                                 inpicref->data[i] + in_off_left[i],
yading@10:                                 inpicref->linesize[i] * s->row_step,
yading@10:                                 s->linesize[i], s->height);
yading@10:             av_image_copy_plane(out->data[i] + out_off_right[i],
yading@10:                                 out->linesize[i] * s->row_step,
yading@10:                                 inpicref->data[i] + in_off_right[i],
yading@10:                                 inpicref->linesize[i] * s->row_step,
yading@10:                                 s->linesize[i], s->height);
yading@10:         }
yading@10:         break;
yading@10:     case MONO_L:
yading@10:     case MONO_R:
yading@10:         for (i = 0; i < s->nb_planes; i++) {
yading@10:             av_image_copy_plane(out->data[i], out->linesize[i],
yading@10:                                 inpicref->data[i] + in_off_left[i],
yading@10:                                 inpicref->linesize[i],
yading@10:                                 s->linesize[i], s->height);
yading@10:         }
yading@10:         break;
yading@10:     case ANAGLYPH_RB_GRAY:
yading@10:     case ANAGLYPH_RG_GRAY:
yading@10:     case ANAGLYPH_RC_GRAY:
yading@10:     case ANAGLYPH_RC_HALF:
yading@10:     case ANAGLYPH_RC_COLOR:
yading@10:     case ANAGLYPH_RC_DUBOIS:
yading@10:     case ANAGLYPH_GM_GRAY:
yading@10:     case ANAGLYPH_GM_HALF:
yading@10:     case ANAGLYPH_GM_COLOR:
yading@10:     case ANAGLYPH_GM_DUBOIS:
yading@10:     case ANAGLYPH_YB_GRAY:
yading@10:     case ANAGLYPH_YB_HALF:
yading@10:     case ANAGLYPH_YB_COLOR:
yading@10:     case ANAGLYPH_YB_DUBOIS: {
yading@10:         int i, x, y, il, ir, o;
yading@10:         uint8_t *src = inpicref->data[0];
yading@10:         uint8_t *dst = out->data[0];
yading@10:         int out_width = s->out.width;
yading@10:         int *ana_matrix[3];
yading@10: 
yading@10:         for (i = 0; i < 3; i++)
yading@10:             ana_matrix[i] = s->ana_matrix[i];
yading@10: 
yading@10:         for (y = 0; y < s->out.height; y++) {
yading@10:             o   = out->linesize[0] * y;
yading@10:             il  = in_off_left[0]  + y * inpicref->linesize[0];
yading@10:             ir  = in_off_right[0] + y * inpicref->linesize[0];
yading@10:             for (x = 0; x < out_width; x++, il += 3, ir += 3, o+= 3) {
yading@10:                 dst[o    ] = ana_convert(ana_matrix[0], src + il, src + ir);
yading@10:                 dst[o + 1] = ana_convert(ana_matrix[1], src + il, src + ir);
yading@10:                 dst[o + 2] = ana_convert(ana_matrix[2], src + il, src + ir);
yading@10:             }
yading@10:         }
yading@10:         break;
yading@10:     }
yading@10:     default:
yading@10:         av_assert0(0);
yading@10:     }
yading@10: 
yading@10:     av_frame_free(&inpicref);
yading@10:     return ff_filter_frame(outlink, out);
yading@10: }
yading@10: 
yading@10: static const AVFilterPad stereo3d_inputs[] = {
yading@10:     {
yading@10:         .name             = "default",
yading@10:         .type             = AVMEDIA_TYPE_VIDEO,
yading@10:         .filter_frame     = filter_frame,
yading@10:     },
yading@10:     { NULL }
yading@10: };
yading@10: 
yading@10: static const AVFilterPad stereo3d_outputs[] = {
yading@10:     {
yading@10:         .name         = "default",
yading@10:         .type         = AVMEDIA_TYPE_VIDEO,
yading@10:         .config_props = config_output,
yading@10:     },
yading@10:     { NULL }
yading@10: };
yading@10: 
yading@10: AVFilter avfilter_vf_stereo3d = {
yading@10:     .name          = "stereo3d",
yading@10:     .description   = NULL_IF_CONFIG_SMALL("Convert video stereoscopic 3D view."),
yading@10:     .priv_size     = sizeof(Stereo3DContext),
yading@10:     .query_formats = query_formats,
yading@10:     .inputs        = stereo3d_inputs,
yading@10:     .outputs       = stereo3d_outputs,
yading@10:     .priv_class    = &stereo3d_class,
yading@10: };