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FFmpeg/libavfilter/vf_stereo3d.c
Andreas Rheinhardt b4f5201967 avfilter: Replace query_formats callback with union of list and callback 
If one looks at the many query_formats callbacks in existence,
one will immediately recognize that there is one type of default
callback for video and a slightly different default callback for
audio: It is "return ff_set_common_formats_from_list(ctx, pix_fmts);"
for video with a filter-specific pix_fmts list. For audio, it is
the same with a filter-specific sample_fmts list together with
ff_set_common_all_samplerates() and ff_set_common_all_channel_counts().

This commit allows to remove the boilerplate query_formats callbacks
by replacing said callback with a union consisting the old callback
and pointers for pixel and sample format arrays. For the not uncommon
case in which these lists only contain a single entry (besides the
sentinel) enum AVPixelFormat and enum AVSampleFormat fields are also
added to the union to store them directly in the AVFilter,
thereby avoiding a relocation.

The state of said union will be contained in a new, dedicated AVFilter
field (the nb_inputs and nb_outputs fields have been shrunk to uint8_t
in order to create a hole for this new field; this is no problem, as
the maximum of all the nb_inputs is four; for nb_outputs it is only
two).

The state's default value coincides with the earlier default of
query_formats being unset, namely that the filter accepts all formats
(and also sample rates and channel counts/layouts for audio)
provided that these properties agree coincide for all inputs and
outputs.

By using different union members for audio and video filters
the type-unsafety of using the same functions for audio and video
lists will furthermore be more confined to formats.c than before.

When the new fields are used, they will also avoid allocations:
Currently something nearly equivalent to ff_default_query_formats()
is called after every successful call to a query_formats callback;
yet in the common case that the newly allocated AVFilterFormats
are not used at all (namely if there are no free links) these newly
allocated AVFilterFormats are freed again without ever being used.
Filters no longer using the callback will not exhibit this any more.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-10-05 17:48:25 +02:00

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/*
* Copyright (c) 2010 Gordon Schmidt <gordon.schmidt <at> s2000.tu-chemnitz.de>
* Copyright (c) 2013-2015 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/intreadwrite.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"
#include "stereo3d.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)
CHECKERBOARD_LR, // checkerboard pattern (left eye first, right eye second)
CHECKERBOARD_RL, // checkerboard pattern (right eye first, left eye second)
INTERLEAVE_COLS_LR, // column-interleave (left eye first, right eye second)
INTERLEAVE_COLS_RL, // column-interleave (right eye first, left eye second)
HDMI, // HDMI frame pack (left eye first, right eye second)
STEREO_CODE_COUNT // TODO: needs autodetection
};
typedef struct StereoComponent {
int format; ///< StereoCode
int width, height;
int off_left, off_right;
int off_lstep, off_rstep;
int row_left, row_right;
int row_step;
} 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] =
{{29884, 32768, 11534, -2818, -5767, -131},
{-2621, -2490, -1049, 24773, 48103, -1180},
{ -983, -1376, -328, -4719, -7406, 80347}},
[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] =
{{69599,-13435,19595, -1048, -8061, -1114},
{-1704, 59507, 4456, 393, 4063, -1114},
{-2490,-11338, 1442, 6160, 12124, 59703}},
};
typedef struct Stereo3DContext {
const AVClass *class;
StereoComponent in, out;
int width, height;
const int *ana_matrix[3];
int nb_planes;
int linesize[4];
int pheight[4];
int hsub, vsub;
int pixstep[4];
AVFrame *prev;
int blanks;
int in_off_left[4], in_off_right[4];
AVRational aspect;
Stereo3DDSPContext dsp;
} 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}, INTERLEAVE_ROWS_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" },
{ "tb2l", "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" },
{ "tb2r", "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" },
{ "tbl", "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" },
{ "tbr", "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" },
{ "irl", "interleave rows left first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_LR}, 0, 0, FLAGS, "in" },
{ "irr", "interleave rows right first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_RL}, 0, 0, FLAGS, "in" },
{ "icl", "interleave columns left first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_COLS_LR}, 0, 0, FLAGS, "in" },
{ "icr", "interleave columns right first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_COLS_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" },
{ "tb2l", "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" },
{ "tb2r", "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" },
{ "tbl", "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" },
{ "tbr", "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" },
{ "chl", "checkerboard left first", 0, AV_OPT_TYPE_CONST, {.i64=CHECKERBOARD_LR}, 0, 0, FLAGS, "out" },
{ "chr", "checkerboard right first", 0, AV_OPT_TYPE_CONST, {.i64=CHECKERBOARD_RL}, 0, 0, FLAGS, "out" },
{ "icl", "interleave columns left first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_COLS_LR}, 0, 0, FLAGS, "out" },
{ "icr", "interleave columns right first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_COLS_RL}, 0, 0, FLAGS, "out" },
{ "hdmi", "HDMI frame pack", 0, AV_OPT_TYPE_CONST, {.i64=HDMI}, 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;
}
return ff_set_common_formats_from_list(ctx, pix_fmts);
}
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 void anaglyph_ic(uint8_t *dst, uint8_t *lsrc, uint8_t *rsrc,
ptrdiff_t dst_linesize, ptrdiff_t l_linesize, ptrdiff_t r_linesize,
int width, int height,
const int *ana_matrix_r, const int *ana_matrix_g, const int *ana_matrix_b)
{
int x, y, o;
for (y = 0; y < height; y++) {
for (o = 0, x = 0; x < width; x++, o+= 3) {
dst[o ] = ana_convert(ana_matrix_r, lsrc + o * 2, rsrc + o * 2);
dst[o + 1] = ana_convert(ana_matrix_g, lsrc + o * 2, rsrc + o * 2);
dst[o + 2] = ana_convert(ana_matrix_b, lsrc + o * 2, rsrc + o * 2);
}
dst += dst_linesize;
lsrc += l_linesize;
rsrc += r_linesize;
}
}
static void anaglyph(uint8_t *dst, uint8_t *lsrc, uint8_t *rsrc,
ptrdiff_t dst_linesize, ptrdiff_t l_linesize, ptrdiff_t r_linesize,
int width, int height,
const int *ana_matrix_r, const int *ana_matrix_g, const int *ana_matrix_b)
{
int x, y, o;
for (y = 0; y < height; y++) {
for (o = 0, x = 0; x < width; x++, o+= 3) {
dst[o ] = ana_convert(ana_matrix_r, lsrc + o, rsrc + o);
dst[o + 1] = ana_convert(ana_matrix_g, lsrc + o, rsrc + o);
dst[o + 2] = ana_convert(ana_matrix_b, lsrc + o, rsrc + o);
}
dst += dst_linesize;
lsrc += l_linesize;
rsrc += r_linesize;
}
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
AVFilterLink *inlink = ctx->inputs[0];
Stereo3DContext *s = ctx->priv;
AVRational fps = inlink->frame_rate;
AVRational tb = inlink->time_base;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
int ret;
s->aspect = inlink->sample_aspect_ratio;
switch (s->in.format) {
case INTERLEAVE_COLS_LR:
case INTERLEAVE_COLS_RL:
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 INTERLEAVE_ROWS_LR:
case INTERLEAVE_ROWS_RL:
case ABOVE_BELOW_2_LR:
case ABOVE_BELOW_LR:
case ABOVE_BELOW_2_RL:
case ABOVE_BELOW_RL:
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->in.off_lstep =
s->in.off_rstep =
s->in.off_left =
s->in.off_right =
s->in.row_left =
s->in.row_right = 0;
s->in.row_step = 1;
switch (s->in.format) {
case SIDE_BY_SIDE_2_LR:
s->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:
s->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:
s->aspect.den *= 2;
case ABOVE_BELOW_LR:
s->in.row_right =
s->height = inlink->h / 2;
break;
case ABOVE_BELOW_2_RL:
s->aspect.den *= 2;
case ABOVE_BELOW_RL:
s->in.row_left =
s->height = inlink->h / 2;
break;
case ALTERNATING_RL:
case ALTERNATING_LR:
fps.den *= 2;
tb.num *= 2;
break;
case INTERLEAVE_COLS_RL:
case INTERLEAVE_COLS_LR:
s->width = inlink->w / 2;
break;
case INTERLEAVE_ROWS_LR:
case INTERLEAVE_ROWS_RL:
s->in.row_step = 2;
if (s->in.format == INTERLEAVE_ROWS_RL)
s->in.off_lstep = 1;
else
s->in.off_rstep = 1;
if (s->out.format != CHECKERBOARD_LR &&
s->out.format != CHECKERBOARD_RL)
s->height = inlink->h / 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;
s->out.row_step = 1;
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:
s->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:
s->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:
s->aspect.num *= 2;
case ABOVE_BELOW_LR:
s->out.height = s->height * 2;
s->out.row_right = s->height;
break;
case HDMI:
if (s->height != 720 && s->height != 1080) {
av_log(ctx, AV_LOG_ERROR, "Only 720 and 1080 height supported\n");
return AVERROR(EINVAL);
}
s->blanks = s->height / 24;
s->out.height = s->height * 2 + s->blanks;
s->out.row_right = s->height + s->blanks;
break;
case ABOVE_BELOW_2_RL:
s->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->in.row_step = 1 + (s->in.format == INTERLEAVE_ROWS_RL);
s->out.row_step = 2;
s->out.height = s->height * 2;
s->out.off_rstep = 1;
break;
case INTERLEAVE_ROWS_RL:
s->in.row_step = 1 + (s->in.format == INTERLEAVE_ROWS_LR);
s->out.row_step = 2;
s->out.height = s->height * 2;
s->out.off_lstep = 1;
break;
case MONO_R:
if (s->in.format != INTERLEAVE_COLS_LR) {
s->in.off_left = s->in.off_right;
s->in.row_left = s->in.row_right;
}
if (s->in.format == INTERLEAVE_ROWS_LR)
FFSWAP(int, s->in.off_lstep, s->in.off_rstep);
break;
case MONO_L:
if (s->in.format == INTERLEAVE_ROWS_RL)
FFSWAP(int, s->in.off_lstep, s->in.off_rstep);
break;
case ALTERNATING_RL:
case ALTERNATING_LR:
fps.num *= 2;
tb.den *= 2;
break;
case CHECKERBOARD_LR:
case CHECKERBOARD_RL:
case INTERLEAVE_COLS_LR:
case INTERLEAVE_COLS_RL:
s->out.width = s->width * 2;
break;
default:
av_log(ctx, AV_LOG_ERROR, "output format %d is not supported\n", s->out.format);
return AVERROR(EINVAL);
}
if (s->in.format == INTERLEAVE_COLS_LR || s->in.format == INTERLEAVE_COLS_RL) {
if ((s->in.format & 1) != (s->out.format & 1)) {
FFSWAP(int, s->in.row_left, s->in.row_right);
FFSWAP(int, s->in.off_lstep, s->in.off_rstep);
FFSWAP(int, s->in.off_left, s->in.off_right);
FFSWAP(int, s->out.row_left, s->out.row_right);
FFSWAP(int, s->out.off_lstep, s->out.off_rstep);
FFSWAP(int, s->out.off_left, s->out.off_right);
}
}
outlink->w = s->out.width;
outlink->h = s->out.height;
outlink->frame_rate = fps;
outlink->time_base = tb;
outlink->sample_aspect_ratio = s->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->pheight[1] = s->pheight[2] = AV_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;
s->dsp.anaglyph = anaglyph;
if (ARCH_X86)
ff_stereo3d_init_x86(&s->dsp);
return 0;
}
typedef struct ThreadData {
AVFrame *ileft, *iright;
AVFrame *out;
} ThreadData;
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
Stereo3DContext *s = ctx->priv;
ThreadData *td = arg;
AVFrame *ileft = td->ileft;
AVFrame *iright = td->iright;
AVFrame *out = td->out;
int height = s->out.height;
int start = (height * jobnr ) / nb_jobs;
int end = (height * (jobnr+1)) / nb_jobs;
const int **ana_matrix = s->ana_matrix;
s->dsp.anaglyph(out->data[0] + out->linesize[0] * start,
ileft ->data[0] + s->in_off_left [0] + ileft->linesize[0] * start * s->in.row_step,
iright->data[0] + s->in_off_right[0] + iright->linesize[0] * start * s->in.row_step,
out->linesize[0],
ileft->linesize[0] * s->in.row_step,
iright->linesize[0] * s->in.row_step,
s->out.width, end - start,
ana_matrix[0], ana_matrix[1], ana_matrix[2]);
return 0;
}
static void interleave_cols_to_any(Stereo3DContext *s, int *out_off, int p, AVFrame *in, AVFrame *out, int d)
{
int y, x;
for (y = 0; y < s->pheight[p]; y++) {
const uint8_t *src = (const uint8_t*)in->data[p] + y * in->linesize[p] + d * s->pixstep[p];
uint8_t *dst = out->data[p] + out_off[p] + y * out->linesize[p] * s->out.row_step;
switch (s->pixstep[p]) {
case 1:
for (x = 0; x < s->linesize[p]; x++)
dst[x] = src[x * 2];
break;
case 2:
for (x = 0; x < s->linesize[p]; x+=2)
AV_WN16(&dst[x], AV_RN16(&src[x * 2]));
break;
case 3:
for (x = 0; x < s->linesize[p]; x+=3)
AV_WB24(&dst[x], AV_RB24(&src[x * 2]));
break;
case 4:
for (x = 0; x < s->linesize[p]; x+=4)
AV_WN32(&dst[x], AV_RN32(&src[x * 2]));
break;
case 6:
for (x = 0; x < s->linesize[p]; x+=6)
AV_WB48(&dst[x], AV_RB48(&src[x * 2]));
break;
case 8:
for (x = 0; x < s->linesize[p]; x+=8)
AV_WN64(&dst[x], AV_RN64(&src[x * 2]));
break;
}
}
}
static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
{
AVFilterContext *ctx = inlink->dst;
Stereo3DContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out = NULL, *oleft, *oright, *ileft, *iright;
int out_off_left[4], out_off_right[4];
int i, ret;
if (s->in.format == s->out.format)
return ff_filter_frame(outlink, inpicref);
switch (s->out.format) {
case ALTERNATING_LR:
case ALTERNATING_RL:
if (!s->prev) {
s->prev = inpicref;
return 0;
}
break;
};
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;
};
if ((s->out.format == ALTERNATING_LR ||
s->out.format == ALTERNATING_RL) &&
(s->in.format == SIDE_BY_SIDE_LR ||
s->in.format == SIDE_BY_SIDE_RL ||
s->in.format == SIDE_BY_SIDE_2_LR ||
s->in.format == SIDE_BY_SIDE_2_RL ||
s->in.format == ABOVE_BELOW_LR ||
s->in.format == ABOVE_BELOW_RL ||
s->in.format == ABOVE_BELOW_2_LR ||
s->in.format == ABOVE_BELOW_2_RL ||
s->in.format == INTERLEAVE_ROWS_LR ||
s->in.format == INTERLEAVE_ROWS_RL)) {
oright = av_frame_clone(s->prev);
oleft = av_frame_clone(s->prev);
if (!oright || !oleft) {
av_frame_free(&oright);
av_frame_free(&oleft);
av_frame_free(&s->prev);
av_frame_free(&inpicref);
return AVERROR(ENOMEM);
}
} else if ((s->out.format == MONO_L ||
s->out.format == MONO_R) &&
(s->in.format == SIDE_BY_SIDE_LR ||
s->in.format == SIDE_BY_SIDE_RL ||
s->in.format == SIDE_BY_SIDE_2_LR ||
s->in.format == SIDE_BY_SIDE_2_RL ||
s->in.format == ABOVE_BELOW_LR ||
s->in.format == ABOVE_BELOW_RL ||
s->in.format == ABOVE_BELOW_2_LR ||
s->in.format == ABOVE_BELOW_2_RL ||
s->in.format == INTERLEAVE_ROWS_LR ||
s->in.format == INTERLEAVE_ROWS_RL)) {
out = oleft = oright = av_frame_clone(inpicref);
if (!out) {
av_frame_free(&s->prev);
av_frame_free(&inpicref);
return AVERROR(ENOMEM);
}
} else if ((s->out.format == MONO_L && s->in.format == ALTERNATING_LR) ||
(s->out.format == MONO_R && s->in.format == ALTERNATING_RL)) {
s->prev->pts /= 2;
ret = ff_filter_frame(outlink, s->prev);
av_frame_free(&inpicref);
s->prev = NULL;
return ret;
} else if ((s->out.format == MONO_L && s->in.format == ALTERNATING_RL) ||
(s->out.format == MONO_R && s->in.format == ALTERNATING_LR)) {
av_frame_free(&s->prev);
inpicref->pts /= 2;
return ff_filter_frame(outlink, inpicref);
} else if ((s->out.format == ALTERNATING_LR && s->in.format == ALTERNATING_RL) ||
(s->out.format == ALTERNATING_RL && s->in.format == ALTERNATING_LR)) {
FFSWAP(int64_t, s->prev->pts, inpicref->pts);
ff_filter_frame(outlink, inpicref);
ret = ff_filter_frame(outlink, s->prev);
s->prev = NULL;
return ret;
} else {
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, s->prev);
}
}
for (i = 0; i < 4; i++) {
int hsub = i == 1 || i == 2 ? s->hsub : 0;
int vsub = i == 1 || i == 2 ? s->vsub : 0;
s->in_off_left[i] = (AV_CEIL_RSHIFT(s->in.row_left, vsub) + s->in.off_lstep) * ileft->linesize[i] + AV_CEIL_RSHIFT(s->in.off_left * s->pixstep[i], hsub);
s->in_off_right[i] = (AV_CEIL_RSHIFT(s->in.row_right, vsub) + s->in.off_rstep) * iright->linesize[i] + AV_CEIL_RSHIFT(s->in.off_right * s->pixstep[i], hsub);
out_off_left[i] = (AV_CEIL_RSHIFT(s->out.row_left, vsub) + s->out.off_lstep) * oleft->linesize[i] + AV_CEIL_RSHIFT(s->out.off_left * s->pixstep[i], hsub);
out_off_right[i] = (AV_CEIL_RSHIFT(s->out.row_right, vsub) + s->out.off_rstep) * oright->linesize[i] + AV_CEIL_RSHIFT(s->out.off_right * s->pixstep[i], hsub);
}
switch (s->out.format) {
case ALTERNATING_LR:
case ALTERNATING_RL:
switch (s->in.format) {
case INTERLEAVE_ROWS_LR:
case INTERLEAVE_ROWS_RL:
for (i = 0; i < s->nb_planes; i++) {
oleft->linesize[i] *= 2;
oright->linesize[i] *= 2;
}
case ABOVE_BELOW_LR:
case ABOVE_BELOW_RL:
case ABOVE_BELOW_2_LR:
case ABOVE_BELOW_2_RL:
case SIDE_BY_SIDE_LR:
case SIDE_BY_SIDE_RL:
case SIDE_BY_SIDE_2_LR:
case SIDE_BY_SIDE_2_RL:
oleft->width = outlink->w;
oright->width = outlink->w;
oleft->height = outlink->h;
oright->height = outlink->h;
for (i = 0; i < s->nb_planes; i++) {
oleft->data[i] += s->in_off_left[i];
oright->data[i] += s->in_off_right[i];
}
break;
default:
goto copy;
break;
}
break;
case HDMI:
for (i = 0; i < s->nb_planes; i++) {
int j, h = s->height >> ((i == 1 || i == 2) ? s->vsub : 0);
int b = (s->blanks) >> ((i == 1 || i == 2) ? s->vsub : 0);
for (j = h; j < h + b; j++)
memset(oleft->data[i] + j * s->linesize[i], 0, s->linesize[i]);
}
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:
copy:
if (s->in.format == INTERLEAVE_COLS_LR ||
s->in.format == INTERLEAVE_COLS_RL) {
for (i = 0; i < s->nb_planes; i++) {
int d = (s->in.format & 1) != (s->out.format & 1);
interleave_cols_to_any(s, out_off_left, i, ileft, oleft, d);
interleave_cols_to_any(s, out_off_right, i, iright, oright, !d);
}
} else {
for (i = 0; i < s->nb_planes; i++) {
av_image_copy_plane(oleft->data[i] + out_off_left[i],
oleft->linesize[i] * s->out.row_step,
ileft->data[i] + s->in_off_left[i],
ileft->linesize[i] * s->in.row_step,
s->linesize[i], s->pheight[i]);
av_image_copy_plane(oright->data[i] + out_off_right[i],
oright->linesize[i] * s->out.row_step,
iright->data[i] + s->in_off_right[i],
iright->linesize[i] * s->in.row_step,
s->linesize[i], s->pheight[i]);
}
}
break;
case MONO_L:
iright = ileft;
case MONO_R:
switch (s->in.format) {
case INTERLEAVE_ROWS_LR:
case INTERLEAVE_ROWS_RL:
for (i = 0; i < s->nb_planes; i++) {
out->linesize[i] *= 2;
}
case ABOVE_BELOW_LR:
case ABOVE_BELOW_RL:
case ABOVE_BELOW_2_LR:
case ABOVE_BELOW_2_RL:
case SIDE_BY_SIDE_LR:
case SIDE_BY_SIDE_RL:
case SIDE_BY_SIDE_2_LR:
case SIDE_BY_SIDE_2_RL:
out->width = outlink->w;
out->height = outlink->h;
for (i = 0; i < s->nb_planes; i++) {
out->data[i] += s->in_off_left[i];
}
break;
case INTERLEAVE_COLS_LR:
case INTERLEAVE_COLS_RL:
for (i = 0; i < s->nb_planes; i++) {
const int d = (s->in.format & 1) != (s->out.format & 1);
interleave_cols_to_any(s, out_off_right, i, iright, out, d);
}
break;
default:
for (i = 0; i < s->nb_planes; i++) {
av_image_copy_plane(out->data[i], out->linesize[i],
iright->data[i] + s->in_off_left[i],
iright->linesize[i] * s->in.row_step,
s->linesize[i], s->pheight[i]);
}
break;
}
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: {
if (s->in.format == INTERLEAVE_COLS_LR ||
s->in.format == INTERLEAVE_COLS_RL) {
const int d = (s->in.format & 1);
anaglyph_ic(out->data[0],
ileft ->data[0] + s->in_off_left [0] + d * 3,
iright->data[0] + s->in_off_right[0] + (!d) * 3,
out->linesize[0],
ileft->linesize[0] * s->in.row_step,
iright->linesize[0] * s->in.row_step,
s->out.width, s->out.height,
s->ana_matrix[0], s->ana_matrix[1], s->ana_matrix[2]);
} else {
ThreadData td;
td.ileft = ileft; td.iright = iright; td.out = out;
ff_filter_execute(ctx, filter_slice, &td, NULL,
FFMIN(s->out.height, ff_filter_get_nb_threads(ctx)));
}
break;
}
case CHECKERBOARD_RL:
case CHECKERBOARD_LR:
for (i = 0; i < s->nb_planes; i++) {
int x, y;
for (y = 0; y < s->pheight[i]; y++) {
uint8_t *dst = out->data[i] + out->linesize[i] * y;
const int d1 = (s->in.format == INTERLEAVE_COLS_LR || s->in.format == INTERLEAVE_COLS_RL) && (s->in.format & 1) != (s->out.format & 1);
const int d2 = (s->in.format == INTERLEAVE_COLS_LR || s->in.format == INTERLEAVE_COLS_RL) ? !d1 : 0;
const int m = 1 + (s->in.format == INTERLEAVE_COLS_LR || s->in.format == INTERLEAVE_COLS_RL);
uint8_t *left = ileft->data[i] + ileft->linesize[i] * y + s->in_off_left[i] + d1 * s->pixstep[i];
uint8_t *right = iright->data[i] + iright->linesize[i] * y + s->in_off_right[i] + d2 * s->pixstep[i];
int p, b;
if (s->out.format == CHECKERBOARD_RL && s->in.format != INTERLEAVE_COLS_LR && s->in.format != INTERLEAVE_COLS_RL)
FFSWAP(uint8_t*, left, right);
switch (s->pixstep[i]) {
case 1:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=2, p++, b+=2) {
dst[x ] = (b&1) == (y&1) ? left[p*m] : right[p*m];
dst[x+1] = (b&1) != (y&1) ? left[p*m] : right[p*m];
}
break;
case 2:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=4, p+=2, b+=2) {
AV_WN16(&dst[x ], (b&1) == (y&1) ? AV_RN16(&left[p*m]) : AV_RN16(&right[p*m]));
AV_WN16(&dst[x+2], (b&1) != (y&1) ? AV_RN16(&left[p*m]) : AV_RN16(&right[p*m]));
}
break;
case 3:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=6, p+=3, b+=2) {
AV_WB24(&dst[x ], (b&1) == (y&1) ? AV_RB24(&left[p*m]) : AV_RB24(&right[p*m]));
AV_WB24(&dst[x+3], (b&1) != (y&1) ? AV_RB24(&left[p*m]) : AV_RB24(&right[p*m]));
}
break;
case 4:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=8, p+=4, b+=2) {
AV_WN32(&dst[x ], (b&1) == (y&1) ? AV_RN32(&left[p*m]) : AV_RN32(&right[p*m]));
AV_WN32(&dst[x+4], (b&1) != (y&1) ? AV_RN32(&left[p*m]) : AV_RN32(&right[p*m]));
}
break;
case 6:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=12, p+=6, b+=2) {
AV_WB48(&dst[x ], (b&1) == (y&1) ? AV_RB48(&left[p*m]) : AV_RB48(&right[p*m]));
AV_WB48(&dst[x+6], (b&1) != (y&1) ? AV_RB48(&left[p*m]) : AV_RB48(&right[p*m]));
}
break;
case 8:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=16, p+=8, b+=2) {
AV_WN64(&dst[x ], (b&1) == (y&1) ? AV_RN64(&left[p*m]) : AV_RN64(&right[p*m]));
AV_WN64(&dst[x+8], (b&1) != (y&1) ? AV_RN64(&left[p*m]) : AV_RN64(&right[p*m]));
}
break;
}
}
}
break;
case INTERLEAVE_COLS_LR:
case INTERLEAVE_COLS_RL:
for (i = 0; i < s->nb_planes; i++) {
const int d = (s->in.format == INTERLEAVE_COLS_LR || s->in.format == INTERLEAVE_COLS_RL);
const int m = 1 + d;
int x, y;
for (y = 0; y < s->pheight[i]; y++) {
uint8_t *dst = out->data[i] + out->linesize[i] * y;
uint8_t *left = ileft->data[i] + ileft->linesize[i] * y * s->in.row_step + s->in_off_left[i] + d * s->pixstep[i];
uint8_t *right = iright->data[i] + iright->linesize[i] * y * s->in.row_step + s->in_off_right[i];
int p, b;
if (s->out.format == INTERLEAVE_COLS_LR)
FFSWAP(uint8_t*, left, right);
switch (s->pixstep[i]) {
case 1:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=2, p++, b+=2) {
dst[x ] = b&1 ? left[p*m] : right[p*m];
dst[x+1] = !(b&1) ? left[p*m] : right[p*m];
}
break;
case 2:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=4, p+=2, b+=2) {
AV_WN16(&dst[x ], b&1 ? AV_RN16(&left[p*m]) : AV_RN16(&right[p*m]));
AV_WN16(&dst[x+2], !(b&1) ? AV_RN16(&left[p*m]) : AV_RN16(&right[p*m]));
}
break;
case 3:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=6, p+=3, b+=2) {
AV_WB24(&dst[x ], b&1 ? AV_RB24(&left[p*m]) : AV_RB24(&right[p*m]));
AV_WB24(&dst[x+3], !(b&1) ? AV_RB24(&left[p*m]) : AV_RB24(&right[p*m]));
}
break;
case 4:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=8, p+=4, b+=2) {
AV_WN32(&dst[x ], b&1 ? AV_RN32(&left[p*m]) : AV_RN32(&right[p*m]));
AV_WN32(&dst[x+4], !(b&1) ? AV_RN32(&left[p*m]) : AV_RN32(&right[p*m]));
}
break;
case 6:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=12, p+=6, b+=2) {
AV_WB48(&dst[x ], b&1 ? AV_RB48(&left[p*m]) : AV_RB48(&right[p*m]));
AV_WB48(&dst[x+6], !(b&1) ? AV_RB48(&left[p*m]) : AV_RB48(&right[p*m]));
}
break;
case 8:
for (x = 0, b = 0, p = 0; x < s->linesize[i] * 2; x+=16, p+=8, b+=2) {
AV_WN64(&dst[x ], b&1 ? AV_RN64(&left[p*m]) : AV_RN64(&right[p*m]));
AV_WN64(&dst[x+8], !(b&1) ? AV_RN64(&left[p*m]) : AV_RN64(&right[p*m]));
}
break;
}
}
}
break;
default:
av_assert0(0);
}
if (oright != oleft) {
if (s->out.format == ALTERNATING_LR)
FFSWAP(AVFrame *, oleft, oright);
oright->pts = s->prev->pts * 2;
ff_filter_frame(outlink, oright);
out = oleft;
oleft->pts = s->prev->pts + inpicref->pts;
av_frame_free(&s->prev);
s->prev = inpicref;
} else if (s->in.format == ALTERNATING_LR ||
s->in.format == ALTERNATING_RL) {
out->pts = s->prev->pts / 2;
av_frame_free(&s->prev);
av_frame_free(&inpicref);
} else {
av_frame_free(&s->prev);
av_frame_free(&inpicref);
}
av_assert0(out);
out->sample_aspect_ratio = s->aspect;
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,
},
};
static const AVFilterPad stereo3d_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
};
const AVFilter ff_vf_stereo3d = {
.name = "stereo3d",
.description = NULL_IF_CONFIG_SMALL("Convert video stereoscopic 3D view."),
.priv_size = sizeof(Stereo3DContext),
.uninit = uninit,
FILTER_INPUTS(stereo3d_inputs),
FILTER_OUTPUTS(stereo3d_outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &stereo3d_class,
.flags = AVFILTER_FLAG_SLICE_THREADS,
};
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