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-rw-r--r--libavfilter/vf_stereo3d.c664
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diff --git a/libavfilter/vf_stereo3d.c b/libavfilter/vf_stereo3d.c
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+++ b/libavfilter/vf_stereo3d.c
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+/*
+ * Copyright (c) 2010 Gordon Schmidt <gordon.schmidt <at> s2000.tu-chemnitz.de>
+ * Copyright (c) 2013 Paul B Mahol
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/avassert.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/pixdesc.h"
+#include "avfilter.h"
+#include "drawutils.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+
+enum StereoCode {
+ 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_GM_DUBOIS, // anaglyph green/magenta dubois
+ ANAGLYPH_YB_GRAY, // anaglyph yellow/blue gray
+ ANAGLYPH_YB_HALF, // anaglyph yellow/blue half colored
+ ANAGLYPH_YB_COLOR, // anaglyph yellow/blue colored
+ ANAGLYPH_YB_DUBOIS, // anaglyph yellow/blue dubois
+ ANAGLYPH_RB_GRAY, // anaglyph red/blue gray
+ ANAGLYPH_RG_GRAY, // anaglyph red/green gray
+ MONO_L, // mono output for debugging (left eye only)
+ MONO_R, // mono output for debugging (right eye only)
+ INTERLEAVE_ROWS_LR, // row-interleave (left eye has top row)
+ INTERLEAVE_ROWS_RL, // row-interleave (right eye has top row)
+ 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
+ ALTERNATING_LR, // alternating frames (left eye first, right eye second)
+ ALTERNATING_RL, // alternating frames (right eye first, left eye second)
+ STEREO_CODE_COUNT // TODO: needs autodetection
+};
+
+typedef struct StereoComponent {
+ enum StereoCode format;
+ int width, height;
+ int off_left, off_right;
+ int off_lstep, off_rstep;
+ int row_left, row_right;
+} StereoComponent;
+
+static const int ana_coeff[][3][6] = {
+ [ANAGLYPH_RB_GRAY] =
+ {{19595, 38470, 7471, 0, 0, 0},
+ { 0, 0, 0, 0, 0, 0},
+ { 0, 0, 0, 19595, 38470, 7471}},
+ [ANAGLYPH_RG_GRAY] =
+ {{19595, 38470, 7471, 0, 0, 0},
+ { 0, 0, 0, 19595, 38470, 7471},
+ { 0, 0, 0, 0, 0, 0}},
+ [ANAGLYPH_RC_GRAY] =
+ {{19595, 38470, 7471, 0, 0, 0},
+ { 0, 0, 0, 19595, 38470, 7471},
+ { 0, 0, 0, 19595, 38470, 7471}},
+ [ANAGLYPH_RC_HALF] =
+ {{19595, 38470, 7471, 0, 0, 0},
+ { 0, 0, 0, 0, 65536, 0},
+ { 0, 0, 0, 0, 0, 65536}},
+ [ANAGLYPH_RC_COLOR] =
+ {{65536, 0, 0, 0, 0, 0},
+ { 0, 0, 0, 0, 65536, 0},
+ { 0, 0, 0, 0, 0, 65536}},
+ [ANAGLYPH_RC_DUBOIS] =
+ {{29891, 32800, 11559, -2849, -5763, -102},
+ {-2627, -2479, -1033, 24804, 48080, -1209},
+ { -997, -1350, -358, -4729, -7403, 80373}},
+ [ANAGLYPH_GM_GRAY] =
+ {{ 0, 0, 0, 19595, 38470, 7471},
+ {19595, 38470, 7471, 0, 0, 0},
+ { 0, 0, 0, 19595, 38470, 7471}},
+ [ANAGLYPH_GM_HALF] =
+ {{ 0, 0, 0, 65536, 0, 0},
+ {19595, 38470, 7471, 0, 0, 0},
+ { 0, 0, 0, 0, 0, 65536}},
+ [ANAGLYPH_GM_COLOR] =
+ {{ 0, 0, 0, 65536, 0, 0},
+ { 0, 65536, 0, 0, 0, 0},
+ { 0, 0, 0, 0, 0, 65536}},
+ [ANAGLYPH_GM_DUBOIS] =
+ {{-4063,-10354, -2556, 34669, 46203, 1573},
+ {18612, 43778, 9372, -1049, -983, -4260},
+ { -983, -1769, 1376, 590, 4915, 61407}},
+ [ANAGLYPH_YB_GRAY] =
+ {{ 0, 0, 0, 19595, 38470, 7471},
+ { 0, 0, 0, 19595, 38470, 7471},
+ {19595, 38470, 7471, 0, 0, 0}},
+ [ANAGLYPH_YB_HALF] =
+ {{ 0, 0, 0, 65536, 0, 0},
+ { 0, 0, 0, 0, 65536, 0},
+ {19595, 38470, 7471, 0, 0, 0}},
+ [ANAGLYPH_YB_COLOR] =
+ {{ 0, 0, 0, 65536, 0, 0},
+ { 0, 0, 0, 0, 65536, 0},
+ { 0, 0, 65536, 0, 0, 0}},
+ [ANAGLYPH_YB_DUBOIS] =
+ {{65535,-12650,18451, -987, -7590, -1049},
+ {-1604, 56032, 4196, 370, 3826, -1049},
+ {-2345,-10676, 1358, 5801, 11416, 56217}},
+};
+
+typedef struct Stereo3DContext {
+ const AVClass *class;
+ StereoComponent in, out;
+ int width, height;
+ int row_step;
+ const int *ana_matrix[3];
+ int nb_planes;
+ int linesize[4];
+ int pheight[4];
+ int hsub, vsub;
+ int pixstep[4];
+ AVFrame *prev;
+ double ts_unit;
+} Stereo3DContext;
+
+#define OFFSET(x) offsetof(Stereo3DContext, x)
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+
+static const AVOption stereo3d_options[] = {
+ { "in", "set input format", OFFSET(in.format), AV_OPT_TYPE_INT, {.i64=SIDE_BY_SIDE_LR}, SIDE_BY_SIDE_LR, STEREO_CODE_COUNT-1, FLAGS, "in"},
+ { "ab2l", "above below half height left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_LR}, 0, 0, FLAGS, "in" },
+ { "ab2r", "above below half height right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_RL}, 0, 0, FLAGS, "in" },
+ { "abl", "above below left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_LR}, 0, 0, FLAGS, "in" },
+ { "abr", "above below right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_RL}, 0, 0, FLAGS, "in" },
+ { "al", "alternating frames left first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_LR}, 0, 0, FLAGS, "in" },
+ { "ar", "alternating frames right first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_RL}, 0, 0, FLAGS, "in" },
+ { "sbs2l", "side by side half width left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_LR}, 0, 0, FLAGS, "in" },
+ { "sbs2r", "side by side half width right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_RL}, 0, 0, FLAGS, "in" },
+ { "sbsl", "side by side left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_LR}, 0, 0, FLAGS, "in" },
+ { "sbsr", "side by side right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_RL}, 0, 0, FLAGS, "in" },
+ { "out", "set output format", OFFSET(out.format), AV_OPT_TYPE_INT, {.i64=ANAGLYPH_RC_DUBOIS}, 0, STEREO_CODE_COUNT-1, FLAGS, "out"},
+ { "ab2l", "above below half height left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_LR}, 0, 0, FLAGS, "out" },
+ { "ab2r", "above below half height right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_RL}, 0, 0, FLAGS, "out" },
+ { "abl", "above below left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_LR}, 0, 0, FLAGS, "out" },
+ { "abr", "above below right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_RL}, 0, 0, FLAGS, "out" },
+ { "agmc", "anaglyph green magenta color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_COLOR}, 0, 0, FLAGS, "out" },
+ { "agmd", "anaglyph green magenta dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_DUBOIS}, 0, 0, FLAGS, "out" },
+ { "agmg", "anaglyph green magenta gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_GRAY}, 0, 0, FLAGS, "out" },
+ { "agmh", "anaglyph green magenta half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_HALF}, 0, 0, FLAGS, "out" },
+ { "al", "alternating frames left first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_LR}, 0, 0, FLAGS, "out" },
+ { "ar", "alternating frames right first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_RL}, 0, 0, FLAGS, "out" },
+ { "arbg", "anaglyph red blue gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RB_GRAY}, 0, 0, FLAGS, "out" },
+ { "arcc", "anaglyph red cyan color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_COLOR}, 0, 0, FLAGS, "out" },
+ { "arcd", "anaglyph red cyan dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_DUBOIS}, 0, 0, FLAGS, "out" },
+ { "arcg", "anaglyph red cyan gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_GRAY}, 0, 0, FLAGS, "out" },
+ { "arch", "anaglyph red cyan half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_HALF}, 0, 0, FLAGS, "out" },
+ { "argg", "anaglyph red green gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RG_GRAY}, 0, 0, FLAGS, "out" },
+ { "aybc", "anaglyph yellow blue color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_COLOR}, 0, 0, FLAGS, "out" },
+ { "aybd", "anaglyph yellow blue dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_DUBOIS}, 0, 0, FLAGS, "out" },
+ { "aybg", "anaglyph yellow blue gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_GRAY}, 0, 0, FLAGS, "out" },
+ { "aybh", "anaglyph yellow blue half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_HALF}, 0, 0, FLAGS, "out" },
+ { "irl", "interleave rows left first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_LR}, 0, 0, FLAGS, "out" },
+ { "irr", "interleave rows right first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_RL}, 0, 0, FLAGS, "out" },
+ { "ml", "mono left", 0, AV_OPT_TYPE_CONST, {.i64=MONO_L}, 0, 0, FLAGS, "out" },
+ { "mr", "mono right", 0, AV_OPT_TYPE_CONST, {.i64=MONO_R}, 0, 0, FLAGS, "out" },
+ { "sbs2l", "side by side half width left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_LR}, 0, 0, FLAGS, "out" },
+ { "sbs2r", "side by side half width right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_RL}, 0, 0, FLAGS, "out" },
+ { "sbsl", "side by side left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_LR}, 0, 0, FLAGS, "out" },
+ { "sbsr", "side by side right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_RL}, 0, 0, FLAGS, "out" },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(stereo3d);
+
+static const enum AVPixelFormat anaglyph_pix_fmts[] = {
+ AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
+ AV_PIX_FMT_NONE
+};
+
+static const enum AVPixelFormat other_pix_fmts[] = {
+ AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
+ AV_PIX_FMT_RGB48BE, AV_PIX_FMT_BGR48BE,
+ AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE,
+ AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_BGRA64BE,
+ AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE,
+ AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
+ AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
+ AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
+ AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
+ AV_PIX_FMT_GBRP,
+ AV_PIX_FMT_GBRP9BE, AV_PIX_FMT_GBRP9LE,
+ AV_PIX_FMT_GBRP10BE, AV_PIX_FMT_GBRP10LE,
+ AV_PIX_FMT_GBRP12BE, AV_PIX_FMT_GBRP12LE,
+ AV_PIX_FMT_GBRP14BE, AV_PIX_FMT_GBRP14LE,
+ AV_PIX_FMT_GBRP16BE, AV_PIX_FMT_GBRP16LE,
+ AV_PIX_FMT_YUV410P,
+ AV_PIX_FMT_YUV411P,
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
+ AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
+ AV_PIX_FMT_YUV440P,
+ AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
+ AV_PIX_FMT_YUVJ411P,
+ AV_PIX_FMT_YUVJ420P,
+ AV_PIX_FMT_YUVJ422P,
+ AV_PIX_FMT_YUVJ440P,
+ AV_PIX_FMT_YUVJ444P,
+ AV_PIX_FMT_YUV420P9LE, AV_PIX_FMT_YUVA420P9LE,
+ AV_PIX_FMT_YUV420P9BE, AV_PIX_FMT_YUVA420P9BE,
+ AV_PIX_FMT_YUV422P9LE, AV_PIX_FMT_YUVA422P9LE,
+ AV_PIX_FMT_YUV422P9BE, AV_PIX_FMT_YUVA422P9BE,
+ AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUVA444P9LE,
+ AV_PIX_FMT_YUV444P9BE, AV_PIX_FMT_YUVA444P9BE,
+ AV_PIX_FMT_YUV420P10LE, AV_PIX_FMT_YUVA420P10LE,
+ AV_PIX_FMT_YUV420P10BE, AV_PIX_FMT_YUVA420P10BE,
+ AV_PIX_FMT_YUV422P10LE, AV_PIX_FMT_YUVA422P10LE,
+ AV_PIX_FMT_YUV422P10BE, AV_PIX_FMT_YUVA422P10BE,
+ AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUVA444P10LE,
+ AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUVA444P10BE,
+ AV_PIX_FMT_YUV420P12BE, AV_PIX_FMT_YUV420P12LE,
+ AV_PIX_FMT_YUV422P12BE, AV_PIX_FMT_YUV422P12LE,
+ AV_PIX_FMT_YUV444P12BE, AV_PIX_FMT_YUV444P12LE,
+ AV_PIX_FMT_YUV420P14BE, AV_PIX_FMT_YUV420P14LE,
+ AV_PIX_FMT_YUV422P14BE, AV_PIX_FMT_YUV422P14LE,
+ AV_PIX_FMT_YUV444P14BE, AV_PIX_FMT_YUV444P14LE,
+ AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUVA420P16LE,
+ AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUVA420P16BE,
+ AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUVA422P16LE,
+ AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUVA422P16BE,
+ AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE,
+ AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE,
+ AV_PIX_FMT_NONE
+};
+
+static int query_formats(AVFilterContext *ctx)
+{
+ Stereo3DContext *s = ctx->priv;
+ const enum AVPixelFormat *pix_fmts;
+
+ switch (s->out.format) {
+ case ANAGLYPH_GM_COLOR:
+ case ANAGLYPH_GM_DUBOIS:
+ case ANAGLYPH_GM_GRAY:
+ case ANAGLYPH_GM_HALF:
+ case ANAGLYPH_RB_GRAY:
+ case ANAGLYPH_RC_COLOR:
+ case ANAGLYPH_RC_DUBOIS:
+ case ANAGLYPH_RC_GRAY:
+ case ANAGLYPH_RC_HALF:
+ case ANAGLYPH_RG_GRAY:
+ case ANAGLYPH_YB_COLOR:
+ case ANAGLYPH_YB_DUBOIS:
+ case ANAGLYPH_YB_GRAY:
+ case ANAGLYPH_YB_HALF:
+ pix_fmts = anaglyph_pix_fmts;
+ break;
+ default:
+ pix_fmts = other_pix_fmts;
+ }
+
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
+
+ return 0;
+}
+
+static int config_output(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ AVFilterLink *inlink = ctx->inputs[0];
+ Stereo3DContext *s = ctx->priv;
+ AVRational aspect = inlink->sample_aspect_ratio;
+ AVRational fps = inlink->frame_rate;
+ AVRational tb = inlink->time_base;
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
+ int ret;
+
+ switch (s->in.format) {
+ case SIDE_BY_SIDE_2_LR:
+ case SIDE_BY_SIDE_LR:
+ case SIDE_BY_SIDE_2_RL:
+ case SIDE_BY_SIDE_RL:
+ if (inlink->w & 1) {
+ av_log(ctx, AV_LOG_ERROR, "width must be even\n");
+ return AVERROR_INVALIDDATA;
+ }
+ break;
+ case ABOVE_BELOW_2_LR:
+ case ABOVE_BELOW_LR:
+ case ABOVE_BELOW_2_RL:
+ case ABOVE_BELOW_RL:
+ if (s->out.format == INTERLEAVE_ROWS_LR ||
+ s->out.format == INTERLEAVE_ROWS_RL) {
+ if (inlink->h & 3) {
+ av_log(ctx, AV_LOG_ERROR, "height must be multiple of 4\n");
+ return AVERROR_INVALIDDATA;
+ }
+ }
+ if (inlink->h & 1) {
+ av_log(ctx, AV_LOG_ERROR, "height must be even\n");
+ return AVERROR_INVALIDDATA;
+ }
+ break;
+ }
+
+ s->in.width =
+ s->width = inlink->w;
+ s->in.height =
+ s->height = inlink->h;
+ s->row_step = 1;
+ s->in.off_lstep =
+ s->in.off_rstep =
+ s->in.off_left =
+ s->in.off_right =
+ s->in.row_left =
+ s->in.row_right = 0;
+
+ switch (s->in.format) {
+ case SIDE_BY_SIDE_2_LR:
+ aspect.num *= 2;
+ case SIDE_BY_SIDE_LR:
+ s->width = inlink->w / 2;
+ s->in.off_right = s->width;
+ break;
+ case SIDE_BY_SIDE_2_RL:
+ aspect.num *= 2;
+ case SIDE_BY_SIDE_RL:
+ s->width = inlink->w / 2;
+ s->in.off_left = s->width;
+ break;
+ case ABOVE_BELOW_2_LR:
+ aspect.den *= 2;
+ case ABOVE_BELOW_LR:
+ s->in.row_right =
+ s->height = inlink->h / 2;
+ break;
+ case ABOVE_BELOW_2_RL:
+ aspect.den *= 2;
+ case ABOVE_BELOW_RL:
+ s->in.row_left =
+ s->height = inlink->h / 2;
+ break;
+ case ALTERNATING_RL:
+ case ALTERNATING_LR:
+ outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP;
+ fps.den *= 2;
+ tb.num *= 2;
+ break;
+ default:
+ av_log(ctx, AV_LOG_ERROR, "input format %d is not supported\n", s->in.format);
+ return AVERROR(EINVAL);
+ }
+
+ s->out.width = s->width;
+ s->out.height = s->height;
+ s->out.off_lstep =
+ s->out.off_rstep =
+ s->out.off_left =
+ s->out.off_right =
+ s->out.row_left =
+ s->out.row_right = 0;
+
+ switch (s->out.format) {
+ case ANAGLYPH_RB_GRAY:
+ case ANAGLYPH_RG_GRAY:
+ 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_GM_DUBOIS:
+ case ANAGLYPH_YB_GRAY:
+ case ANAGLYPH_YB_HALF:
+ case ANAGLYPH_YB_COLOR:
+ case ANAGLYPH_YB_DUBOIS: {
+ uint8_t rgba_map[4];
+
+ ff_fill_rgba_map(rgba_map, outlink->format);
+ s->ana_matrix[rgba_map[0]] = &ana_coeff[s->out.format][0][0];
+ s->ana_matrix[rgba_map[1]] = &ana_coeff[s->out.format][1][0];
+ s->ana_matrix[rgba_map[2]] = &ana_coeff[s->out.format][2][0];
+ break;
+ }
+ case SIDE_BY_SIDE_2_LR:
+ aspect.den *= 2;
+ case SIDE_BY_SIDE_LR:
+ s->out.width = s->width * 2;
+ s->out.off_right = s->width;
+ break;
+ case SIDE_BY_SIDE_2_RL:
+ aspect.den *= 2;
+ case SIDE_BY_SIDE_RL:
+ s->out.width = s->width * 2;
+ s->out.off_left = s->width;
+ break;
+ case ABOVE_BELOW_2_LR:
+ aspect.num *= 2;
+ case ABOVE_BELOW_LR:
+ s->out.height = s->height * 2;
+ s->out.row_right = s->height;
+ break;
+ case ABOVE_BELOW_2_RL:
+ aspect.num *= 2;
+ case ABOVE_BELOW_RL:
+ s->out.height = s->height * 2;
+ s->out.row_left = s->height;
+ break;
+ case INTERLEAVE_ROWS_LR:
+ s->row_step = 2;
+ s->height = s->height / 2;
+ s->out.off_rstep =
+ s->in.off_rstep = 1;
+ break;
+ case INTERLEAVE_ROWS_RL:
+ s->row_step = 2;
+ s->height = s->height / 2;
+ s->out.off_lstep =
+ s->in.off_lstep = 1;
+ break;
+ case MONO_R:
+ s->in.off_left = s->in.off_right;
+ s->in.row_left = s->in.row_right;
+ case MONO_L:
+ break;
+ case ALTERNATING_RL:
+ case ALTERNATING_LR:
+ fps.num *= 2;
+ tb.den *= 2;
+ break;
+ default:
+ av_log(ctx, AV_LOG_ERROR, "output format %d is not supported\n", s->out.format);
+ return AVERROR(EINVAL);
+ }
+
+ outlink->w = s->out.width;
+ outlink->h = s->out.height;
+ outlink->frame_rate = fps;
+ outlink->time_base = tb;
+ outlink->sample_aspect_ratio = aspect;
+
+ if ((ret = av_image_fill_linesizes(s->linesize, outlink->format, s->width)) < 0)
+ return ret;
+ s->nb_planes = av_pix_fmt_count_planes(outlink->format);
+ av_image_fill_max_pixsteps(s->pixstep, NULL, desc);
+ s->ts_unit = av_q2d(av_inv_q(av_mul_q(outlink->frame_rate, outlink->time_base)));
+ s->pheight[1] = s->pheight[2] = FF_CEIL_RSHIFT(s->height, desc->log2_chroma_h);
+ s->pheight[0] = s->pheight[3] = s->height;
+ s->hsub = desc->log2_chroma_w;
+ s->vsub = desc->log2_chroma_h;
+
+ return 0;
+}
+
+static inline uint8_t ana_convert(const int *coeff, const uint8_t *left, const uint8_t *right)
+{
+ 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 filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
+{
+ AVFilterContext *ctx = inlink->dst;
+ Stereo3DContext *s = ctx->priv;
+ AVFilterLink *outlink = ctx->outputs[0];
+ AVFrame *out, *oleft, *oright, *ileft, *iright;
+ int out_off_left[4], out_off_right[4];
+ int in_off_left[4], in_off_right[4];
+ int i;
+
+ switch (s->in.format) {
+ case ALTERNATING_LR:
+ case ALTERNATING_RL:
+ if (!s->prev) {
+ s->prev = inpicref;
+ return 0;
+ }
+ ileft = s->prev;
+ iright = inpicref;
+ if (s->in.format == ALTERNATING_RL)
+ FFSWAP(AVFrame *, ileft, iright);
+ break;
+ default:
+ ileft = iright = inpicref;
+ };
+
+ out = oleft = oright = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ av_frame_free(&s->prev);
+ av_frame_free(&inpicref);
+ return AVERROR(ENOMEM);
+ }
+ av_frame_copy_props(out, inpicref);
+
+ if (s->out.format == ALTERNATING_LR ||
+ s->out.format == ALTERNATING_RL) {
+ oright = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!oright) {
+ av_frame_free(&oleft);
+ av_frame_free(&s->prev);
+ av_frame_free(&inpicref);
+ return AVERROR(ENOMEM);
+ }
+ av_frame_copy_props(oright, inpicref);
+ }
+
+ for (i = 0; i < 4; i++) {
+ int hsub = i == 1 || i == 2 ? s->hsub : 0;
+ int vsub = i == 1 || i == 2 ? s->vsub : 0;
+ in_off_left[i] = (FF_CEIL_RSHIFT(s->in.row_left, vsub) + s->in.off_lstep) * ileft->linesize[i] + FF_CEIL_RSHIFT(s->in.off_left * s->pixstep[i], hsub);
+ in_off_right[i] = (FF_CEIL_RSHIFT(s->in.row_right, vsub) + s->in.off_rstep) * iright->linesize[i] + FF_CEIL_RSHIFT(s->in.off_right * s->pixstep[i], hsub);
+ out_off_left[i] = (FF_CEIL_RSHIFT(s->out.row_left, vsub) + s->out.off_lstep) * oleft->linesize[i] + FF_CEIL_RSHIFT(s->out.off_left * s->pixstep[i], hsub);
+ out_off_right[i] = (FF_CEIL_RSHIFT(s->out.row_right, vsub) + s->out.off_rstep) * oright->linesize[i] + FF_CEIL_RSHIFT(s->out.off_right * s->pixstep[i], hsub);
+ }
+
+ switch (s->out.format) {
+ case ALTERNATING_LR:
+ case ALTERNATING_RL:
+ 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:
+ for (i = 0; i < s->nb_planes; i++) {
+ av_image_copy_plane(oleft->data[i] + out_off_left[i],
+ oleft->linesize[i] * s->row_step,
+ ileft->data[i] + in_off_left[i],
+ ileft->linesize[i] * s->row_step,
+ s->linesize[i], s->pheight[i]);
+ av_image_copy_plane(oright->data[i] + out_off_right[i],
+ oright->linesize[i] * s->row_step,
+ iright->data[i] + in_off_right[i],
+ iright->linesize[i] * s->row_step,
+ s->linesize[i], s->pheight[i]);
+ }
+ break;
+ case MONO_L:
+ iright = ileft;
+ case MONO_R:
+ for (i = 0; i < s->nb_planes; i++) {
+ av_image_copy_plane(out->data[i], out->linesize[i],
+ iright->data[i] + in_off_left[i],
+ iright->linesize[i],
+ s->linesize[i], s->pheight[i]);
+ }
+ break;
+ case ANAGLYPH_RB_GRAY:
+ case ANAGLYPH_RG_GRAY:
+ 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_GM_DUBOIS:
+ case ANAGLYPH_YB_GRAY:
+ case ANAGLYPH_YB_HALF:
+ case ANAGLYPH_YB_COLOR:
+ case ANAGLYPH_YB_DUBOIS: {
+ int x, y, il, ir, o;
+ const uint8_t *lsrc = ileft->data[0];
+ const uint8_t *rsrc = iright->data[0];
+ uint8_t *dst = out->data[0];
+ int out_width = s->out.width;
+ const int **ana_matrix = s->ana_matrix;
+
+ for (y = 0; y < s->out.height; y++) {
+ o = out->linesize[0] * y;
+ il = in_off_left[0] + y * ileft->linesize[0];
+ ir = in_off_right[0] + y * iright->linesize[0];
+ for (x = 0; x < out_width; x++, il += 3, ir += 3, o+= 3) {
+ dst[o ] = ana_convert(ana_matrix[0], lsrc + il, rsrc + ir);
+ dst[o + 1] = ana_convert(ana_matrix[1], lsrc + il, rsrc + ir);
+ dst[o + 2] = ana_convert(ana_matrix[2], lsrc + il, rsrc + ir);
+ }
+ }
+ break;
+ }
+ default:
+ av_assert0(0);
+ }
+
+ av_frame_free(&inpicref);
+ av_frame_free(&s->prev);
+ if (oright != oleft) {
+ if (s->out.format == ALTERNATING_LR)
+ FFSWAP(AVFrame *, oleft, oright);
+ oright->pts = outlink->frame_count * s->ts_unit;
+ ff_filter_frame(outlink, oright);
+ out = oleft;
+ oleft->pts = outlink->frame_count * s->ts_unit;
+ } else if (s->in.format == ALTERNATING_LR ||
+ s->in.format == ALTERNATING_RL) {
+ out->pts = outlink->frame_count * s->ts_unit;
+ }
+ return ff_filter_frame(outlink, out);
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ Stereo3DContext *s = ctx->priv;
+
+ av_frame_free(&s->prev);
+}
+
+static const AVFilterPad stereo3d_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad stereo3d_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_output,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_stereo3d = {
+ .name = "stereo3d",
+ .description = NULL_IF_CONFIG_SMALL("Convert video stereoscopic 3D view."),
+ .priv_size = sizeof(Stereo3DContext),
+ .uninit = uninit,
+ .query_formats = query_formats,
+ .inputs = stereo3d_inputs,
+ .outputs = stereo3d_outputs,
+ .priv_class = &stereo3d_class,
+};
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