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FFmpeg/libavfilter/vf_stereo3d.c
Paul B Mahol 2bdd434931 lavfi/stereo3d: add support for alternating frames input & output format 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2013-04-30 09:13:36 +00:00

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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 "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;
int ana_matrix[3][6];
int nb_planes;
int linesize[4];
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_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_YUV444P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUVA444P9LE,
AV_PIX_FMT_YUV444P9BE, AV_PIX_FMT_YUVA444P9BE,
AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUVA444P10LE,
AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUVA444P10BE,
AV_PIX_FMT_YUV444P12BE, AV_PIX_FMT_YUV444P12LE,
AV_PIX_FMT_YUV444P14BE, AV_PIX_FMT_YUV444P14LE,
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:
memcpy(s->ana_matrix, ana_coeff[s->out.format], sizeof(s->ana_matrix));
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)));
return 0;
}
static inline uint8_t ana_convert(const int *coeff, uint8_t *left, 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++) {
in_off_left[i] = (s->in.row_left + s->in.off_lstep) * ileft->linesize[i] + s->in.off_left * s->pixstep[i];
in_off_right[i] = (s->in.row_right + s->in.off_rstep) * iright->linesize[i] + s->in.off_right * s->pixstep[i];
out_off_left[i] = (s->out.row_left + s->out.off_lstep) * oleft->linesize[i] + s->out.off_left * s->pixstep[i];
out_off_right[i] = (s->out.row_right + s->out.off_rstep) * oright->linesize[i] + s->out.off_right * s->pixstep[i];
}
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->height);
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->height);
}
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->height);
}
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 i, x, y, il, ir, o;
uint8_t *lsrc = ileft->data[0];
uint8_t *rsrc = iright->data[0];
uint8_t *dst = out->data[0];
int out_width = s->out.width;
int *ana_matrix[3];
for (i = 0; i < 3; i++)
ana_matrix[i] = s->ana_matrix[i];
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 avfilter_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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