[FFmpeg-devel] [PATCH 1/2] lavfi: port MP stereo3d filter
Paul B Mahol
onemda at gmail.com
Sun Mar 3 13:53:05 CET 2013
Signed-off-by: Paul B Mahol <onemda at gmail.com>
---
Changelog | 1 +
LICENSE | 1 +
configure | 1 +
doc/filters.texi | 109 +++++++++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/version.h | 2 +-
libavfilter/vf_stereo3d.c | 461 ++++++++++++++++++++++++++++++++++++++++++++++
8 files changed, 576 insertions(+), 1 deletion(-)
create mode 100644 libavfilter/vf_stereo3d.c
diff --git a/Changelog b/Changelog
index 6e7bac6..a535864 100644
--- a/Changelog
+++ b/Changelog
@@ -23,6 +23,7 @@ version <next>:
- noise filter ported from libmpcodecs
- Subtitles character encoding conversion
- blend filter
+- stereo3d filter ported from libmpcodecs
version 1.1:
diff --git a/LICENSE b/LICENSE
index 14e3e0f..38b1a5d 100644
--- a/LICENSE
+++ b/LICENSE
@@ -39,6 +39,7 @@ Specifically, the GPL parts of FFmpeg are
- vf_noise.c
- vf_pp.c
- vf_smartblur.c
+ - vf_stereo3d.c
- vf_super2xsai.c
- vf_tinterlace.c
- vf_yadif.c
diff --git a/configure b/configure
index a3be9a8..8def7a0 100755
--- a/configure
+++ b/configure
@@ -2067,6 +2067,7 @@ removelogo_filter_deps="avcodec avformat swscale"
scale_filter_deps="swscale"
smartblur_filter_deps="gpl swscale"
showspectrum_filter_deps="avcodec rdft"
+stereo3d_filter_deps="gpl"
subtitles_filter_deps="avformat avcodec libass"
super2xsai_filter_deps="gpl"
tinterlace_filter_deps="gpl"
diff --git a/doc/filters.texi b/doc/filters.texi
index bcbe21a..02e701a 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -4832,6 +4832,115 @@ a pixel should be blurred or not. A value of 0 will filter all the
image, a value included in [0,30] will filter flat areas and a value
included in [-30,0] will filter edges.
+ at section stereo3d
+
+Convert between different stereoscopic image formats.
+
+This filter accepts the following named options, expressed as a
+sequence of @var{key}=@var{value} pairs, separated by ":".
+
+ at table @option
+ at item in
+Stereoscopic image format of input.
+
+Available values for input image formats are:
+ at table @samp
+ at item sbsl
+side by side parallel (left eye left, right eye right)
+
+ at item sbsr
+side by side crosseye (right eye left, left eye right)
+
+ at item sbs2l
+side by side parallel with half width resolution
+(left eye left, right eye right)
+
+ at item sbs2r
+side by side crosseye with half width resolution
+(right eye left, left eye right)
+
+ at item abl
+above-below (left eye above, right eye below)
+
+ at item abr
+above-below (right eye above, left eye below)
+
+ at item ab2l
+above-below with half height resolution
+(left eye above, right eye below)
+
+ at item ab2r
+above-below with half height resolution
+(right eye above, left eye below)
+ at end table
+
+ at item out
+Stereoscopic image format of output.
+
+Available values for output image formats are all the input formats as well as:
+ at table @samp
+ at item arcg
+anaglyph red/cyan gray
+(red filter on left eye, cyan filter on right eye)
+
+ at item arch
+anaglyph red/cyan half colored
+(red filter on left eye, cyan filter on right eye)
+
+ at item arcc
+anaglyph red/cyan color
+(red filter on left eye, cyan filter on right eye)
+
+ at item arcd
+anaglyph red/cyan color optimized with the least squares projection of dubois
+(red filter on left eye, cyan filter on right eye)
+
+ at item agmg
+anaglyph green/magenta gray
+(green filter on left eye, magenta filter on right eye)
+
+ at item agmh
+anaglyph green/magenta half colored
+(green filter on left eye, magenta filter on right eye)
+
+ at item agmc
+anaglyph green/magenta colored
+(green filter on left eye, magenta filter on right eye)
+
+ at item agmd
+anaglyph green/magenta color optimized with the least squares projection of dubois
+(green filter on left eye, magenta filter on right eye)
+
+ at item aybg
+anaglyph yellow/blue gray
+(yellow filter on left eye, blue filter on right eye)
+
+ at item aybh
+anaglyph yellow/blue half colored
+(yellow filter on left eye, blue filter on right eye)
+
+ at item aybc
+anaglyph yellow/blue colored
+(yellow filter on left eye, blue filter on right eye)
+
+ at item aybd
+anaglyph yellow/blue color optimized with the least squares projection of dubois
+(yellow filter on left eye, blue filter on right eye)
+
+ at item irl
+interleaved rows (left eye has top row, right eye starts on next row)
+
+ at item irr
+interleaved rows (right eye has top row, left eye starts on next row)
+
+ at item ml
+mono output (left eye only)
+
+ at item mr
+mono output (right eye only)
+ at end table
+ at end table
+
@anchor{subtitles}
@section subtitles
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 04ed8b8..6a5f8c8 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -154,6 +154,7 @@ OBJS-$(CONFIG_SETTB_FILTER) += f_settb.o
OBJS-$(CONFIG_SHOWINFO_FILTER) += vf_showinfo.o
OBJS-$(CONFIG_SMARTBLUR_FILTER) += vf_smartblur.o
OBJS-$(CONFIG_SPLIT_FILTER) += split.o
+OBJS-$(CONFIG_STEREO3D_FILTER) += vf_stereo3d.o
OBJS-$(CONFIG_SUBTITLES_FILTER) += vf_subtitles.o
OBJS-$(CONFIG_SUPER2XSAI_FILTER) += vf_super2xsai.o
OBJS-$(CONFIG_SWAPUV_FILTER) += vf_swapuv.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index f05f8ae..8a3f126 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -148,6 +148,7 @@ void avfilter_register_all(void)
REGISTER_FILTER(SHOWINFO, showinfo, vf);
REGISTER_FILTER(SMARTBLUR, smartblur, vf);
REGISTER_FILTER(SPLIT, split, vf);
+ REGISTER_FILTER(STEREO3D, stereo3d, vf);
REGISTER_FILTER(SUBTITLES, subtitles, vf);
REGISTER_FILTER(SUPER2XSAI, super2xsai, vf);
REGISTER_FILTER(SWAPUV, swapuv, vf);
diff --git a/libavfilter/version.h b/libavfilter/version.h
index 93bdf91..e077acf 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -29,7 +29,7 @@
#include "libavutil/avutil.h"
#define LIBAVFILTER_VERSION_MAJOR 3
-#define LIBAVFILTER_VERSION_MINOR 41
+#define LIBAVFILTER_VERSION_MINOR 42
#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
diff --git a/libavfilter/vf_stereo3d.c b/libavfilter/vf_stereo3d.c
new file mode 100644
index 0000000..ce69377
--- /dev/null
+++ b/libavfilter/vf_stereo3d.c
@@ -0,0 +1,461 @@
+/*
+ * 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/opt.h"
+#include "libavutil/imgutils.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
+ 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
+ STEREO_CODE_COUNT // TODO: needs autodetection
+};
+
+typedef struct StereoComponent {
+ enum StereoCode format;
+ int width, height;
+ int off_left, off_right;
+ int row_left, row_right;
+} StereoComponent;
+
+static const int ana_coeff[][3][6] = {
+ [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];
+} 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, ABOVE_BELOW_2_RL, 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" },
+ { "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" },
+ { "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" },
+ { "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" },
+ { "out", "set output format", OFFSET(out.format), AV_OPT_TYPE_INT, {.i64=ANAGLYPH_RC_DUBOIS}, 0, STEREO_CODE_COUNT-1, 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" },
+ { "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" },
+ { "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" },
+ { "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" },
+ { "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" },
+ { "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" },
+ { "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" },
+ { "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" },
+ { "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" },
+ { "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" },
+ { "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" },
+};
+
+AVFILTER_DEFINE_CLASS(stereo3d);
+
+static av_cold int init(AVFilterContext *ctx, const char *args)
+{
+ Stereo3DContext *s = ctx->priv;
+ int ret;
+
+ s->class = &stereo3d_class;
+ av_opt_set_defaults(s);
+
+ if ((ret = (av_set_options_string(s, args, "=", ":"))) < 0)
+ return ret;
+
+ return 0;
+}
+
+static int query_formats(AVFilterContext *ctx)
+{
+ static const enum AVPixelFormat pix_fmts[] = {
+ AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE
+ };
+
+ 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;
+
+ s->in.width =
+ s->width = inlink->w;
+ s->in.height =
+ s->height = inlink->h;
+ s->row_step = 1;
+ 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 * 3;
+ 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 * 3;
+ 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;
+ 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_left =
+ s->out.off_right =
+ s->out.row_left =
+ s->out.row_right = 0;
+
+ switch (s->out.format) {
+ 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.num /= 2;
+ case SIDE_BY_SIDE_LR:
+ s->out.width =
+ s->out.off_right = s->width * 3;
+ break;
+ case SIDE_BY_SIDE_2_RL:
+ aspect.num /= 2;
+ case SIDE_BY_SIDE_RL:
+ s->out.width = s->width * 2;
+ s->out.off_left = s->width * 3;
+ break;
+ case ABOVE_BELOW_2_LR:
+ aspect.den /= 2;
+ case ABOVE_BELOW_LR:
+ s->out.height = s->height * 2;
+ s->out.row_right = s->height;
+ break;
+ case ABOVE_BELOW_2_RL:
+ aspect.den /= 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_right = s->width * 3;
+ s->in.off_right += s->in.width * 3;
+ break;
+ case INTERLEAVE_ROWS_RL:
+ s->row_step = 2;
+ s->height = s->height / 2;
+ s->out.off_left = s->width * 3;
+ s->in.off_left += s->in.width * 3;
+ break;
+ case MONO_R:
+ s->in.off_left = s->in.off_right;
+ s->in.row_left = s->in.row_right;
+ case MONO_L:
+ break;
+ default:
+ av_log(ctx, AV_LOG_ERROR, "output format is not supported\n");
+ return AVERROR(EINVAL);
+ }
+
+ outlink->w = s->out.width;
+ outlink->h = s->out.height;
+ outlink->sample_aspect_ratio = aspect;
+
+ return 0;
+}
+
+static inline uint8_t ana_convert(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, AVFilterBufferRef *inpicref)
+{
+ AVFilterContext *ctx = inlink->dst;
+ Stereo3DContext *s = ctx->priv;
+ AVFilterLink *outlink = ctx->outputs[0];
+ AVFilterBufferRef *out;
+ int out_off_left, out_off_right;
+ int in_off_left, in_off_right;
+ int ret;
+
+ out = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ if (!out) {
+ avfilter_unref_bufferp(&inpicref);
+ return AVERROR(ENOMEM);
+ }
+
+ out->pts = inpicref->pts;
+ out->pos = inpicref->pos;
+
+ in_off_left = s->in.row_left * inpicref->linesize[0] + s->in.off_left;
+ in_off_right = s->in.row_right * inpicref->linesize[0] + s->in.off_right;
+ out_off_left = s->out.row_left * out->linesize[0] + s->out.off_left;
+ out_off_right = s->out.row_right * out->linesize[0] + s->out.off_right;
+
+ switch (s->out.format) {
+ 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:
+ av_image_copy_plane(out->data[0] + out_off_left,
+ out->linesize[0] * s->row_step,
+ inpicref->data[0] + in_off_left,
+ inpicref->linesize[0] * s->row_step,
+ 3 * s->width, s->height);
+ av_image_copy_plane(out->data[0] + out_off_right,
+ out->linesize[0] * s->row_step,
+ inpicref->data[0] + in_off_right,
+ inpicref->linesize[0] * s->row_step,
+ 3 * s->width, s->height);
+ break;
+ case MONO_L:
+ case MONO_R:
+ av_image_copy_plane(out->data[0], out->linesize[0],
+ inpicref->data[0] + in_off_left,
+ inpicref->linesize[0],
+ 3 * s->width, s->height);
+ break;
+ case ANAGLYPH_RC_GRAY:
+ case ANAGLYPH_RC_HALF:
+ case ANAGLYPH_RC_COLOR:
+ case ANAGLYPH_RC_DUBOIS:
+ case ANAGLYPH_GM_GRAY:
+ case ANAGLYPH_GM_HALF:
+ case ANAGLYPH_GM_COLOR:
+ case ANAGLYPH_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 *src = inpicref->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 + y * inpicref->linesize[0];
+ ir = in_off_right + y * inpicref->linesize[0];
+ for (x = 0; x < out_width; x++, il += 3, ir += 3, o+= 3) {
+ dst[o ] = ana_convert(ana_matrix[0], src + il, src + ir);
+ dst[o + 1] = ana_convert(ana_matrix[1], src + il, src + ir);
+ dst[o + 2] = ana_convert(ana_matrix[2], src + il, src + ir);
+ }
+ }
+ break;
+ }
+ default:
+ av_log(ctx, AV_LOG_ERROR, "output format is not supported\n");
+ return AVERROR(EINVAL);
+ }
+
+ ret = ff_filter_frame(outlink, out);
+ avfilter_unref_bufferp(&inpicref);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ Stereo3DContext *s = ctx->priv;
+
+ av_opt_free(s);
+}
+
+static const AVFilterPad stereo3d_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .get_video_buffer = ff_null_get_video_buffer,
+ .filter_frame = filter_frame,
+ .min_perms = AV_PERM_READ,
+ },
+ { NULL }
+};
+
+static const AVFilterPad stereo3d_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_output,
+ .min_perms = AV_PERM_WRITE,
+ },
+ { NULL }
+};
+
+AVFilter avfilter_vf_stereo3d = {
+ .name = "stereo3d",
+ .description = NULL_IF_CONFIG_SMALL("Stereoscopic 3D view."),
+ .priv_size = sizeof(Stereo3DContext),
+ .init = init,
+ .uninit = uninit,
+ .query_formats = query_formats,
+ .inputs = stereo3d_inputs,
+ .outputs = stereo3d_outputs,
+ .priv_class = &stereo3d_class,
+};
--
1.7.11.4
More information about the ffmpeg-devel
mailing list