2 * Copyright (c) 2010 Gordon Schmidt <gordon.schmidt <at> s2000.tu-chemnitz.de>
3 * Copyright (c) 2013 Paul B Mahol
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/avassert.h"
23 #include "libavutil/imgutils.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/parseutils.h"
26 #include "libavutil/pixdesc.h"
33 ANAGLYPH_RC_GRAY, // anaglyph red/cyan gray
34 ANAGLYPH_RC_HALF, // anaglyph red/cyan half colored
35 ANAGLYPH_RC_COLOR, // anaglyph red/cyan colored
36 ANAGLYPH_RC_DUBOIS, // anaglyph red/cyan dubois
37 ANAGLYPH_GM_GRAY, // anaglyph green/magenta gray
38 ANAGLYPH_GM_HALF, // anaglyph green/magenta half colored
39 ANAGLYPH_GM_COLOR, // anaglyph green/magenta colored
40 ANAGLYPH_GM_DUBOIS, // anaglyph green/magenta dubois
41 ANAGLYPH_YB_GRAY, // anaglyph yellow/blue gray
42 ANAGLYPH_YB_HALF, // anaglyph yellow/blue half colored
43 ANAGLYPH_YB_COLOR, // anaglyph yellow/blue colored
44 ANAGLYPH_YB_DUBOIS, // anaglyph yellow/blue dubois
45 ANAGLYPH_RB_GRAY, // anaglyph red/blue gray
46 ANAGLYPH_RG_GRAY, // anaglyph red/green gray
47 MONO_L, // mono output for debugging (left eye only)
48 MONO_R, // mono output for debugging (right eye only)
49 INTERLEAVE_ROWS_LR, // row-interleave (left eye has top row)
50 INTERLEAVE_ROWS_RL, // row-interleave (right eye has top row)
51 SIDE_BY_SIDE_LR, // side by side parallel (left eye left, right eye right)
52 SIDE_BY_SIDE_RL, // side by side crosseye (right eye left, left eye right)
53 SIDE_BY_SIDE_2_LR, // side by side parallel with half width resolution
54 SIDE_BY_SIDE_2_RL, // side by side crosseye with half width resolution
55 ABOVE_BELOW_LR, // above-below (left eye above, right eye below)
56 ABOVE_BELOW_RL, // above-below (right eye above, left eye below)
57 ABOVE_BELOW_2_LR, // above-below with half height resolution
58 ABOVE_BELOW_2_RL, // above-below with half height resolution
59 STEREO_CODE_COUNT // TODO: needs autodetection
62 typedef struct StereoComponent {
63 enum StereoCode format;
65 int off_left, off_right;
66 int off_lstep, off_rstep;
67 int row_left, row_right;
70 static const int ana_coeff[][3][6] = {
72 {{19595, 38470, 7471, 0, 0, 0},
74 { 0, 0, 0, 19595, 38470, 7471}},
76 {{19595, 38470, 7471, 0, 0, 0},
77 { 0, 0, 0, 19595, 38470, 7471},
80 {{19595, 38470, 7471, 0, 0, 0},
81 { 0, 0, 0, 19595, 38470, 7471},
82 { 0, 0, 0, 19595, 38470, 7471}},
84 {{19595, 38470, 7471, 0, 0, 0},
85 { 0, 0, 0, 0, 65536, 0},
86 { 0, 0, 0, 0, 0, 65536}},
88 {{65536, 0, 0, 0, 0, 0},
89 { 0, 0, 0, 0, 65536, 0},
90 { 0, 0, 0, 0, 0, 65536}},
91 [ANAGLYPH_RC_DUBOIS] =
92 {{29891, 32800, 11559, -2849, -5763, -102},
93 {-2627, -2479, -1033, 24804, 48080, -1209},
94 { -997, -1350, -358, -4729, -7403, 80373}},
96 {{ 0, 0, 0, 19595, 38470, 7471},
97 {19595, 38470, 7471, 0, 0, 0},
98 { 0, 0, 0, 19595, 38470, 7471}},
100 {{ 0, 0, 0, 65536, 0, 0},
101 {19595, 38470, 7471, 0, 0, 0},
102 { 0, 0, 0, 0, 0, 65536}},
103 [ANAGLYPH_GM_COLOR] =
104 {{ 0, 0, 0, 65536, 0, 0},
105 { 0, 65536, 0, 0, 0, 0},
106 { 0, 0, 0, 0, 0, 65536}},
107 [ANAGLYPH_GM_DUBOIS] =
108 {{-4063,-10354, -2556, 34669, 46203, 1573},
109 {18612, 43778, 9372, -1049, -983, -4260},
110 { -983, -1769, 1376, 590, 4915, 61407}},
112 {{ 0, 0, 0, 19595, 38470, 7471},
113 { 0, 0, 0, 19595, 38470, 7471},
114 {19595, 38470, 7471, 0, 0, 0}},
116 {{ 0, 0, 0, 65536, 0, 0},
117 { 0, 0, 0, 0, 65536, 0},
118 {19595, 38470, 7471, 0, 0, 0}},
119 [ANAGLYPH_YB_COLOR] =
120 {{ 0, 0, 0, 65536, 0, 0},
121 { 0, 0, 0, 0, 65536, 0},
122 { 0, 0, 65536, 0, 0, 0}},
123 [ANAGLYPH_YB_DUBOIS] =
124 {{65535,-12650,18451, -987, -7590, -1049},
125 {-1604, 56032, 4196, 370, 3826, -1049},
126 {-2345,-10676, 1358, 5801, 11416, 56217}},
129 typedef struct Stereo3DContext {
130 const AVClass *class;
131 StereoComponent in, out;
134 int ana_matrix[3][6];
140 #define OFFSET(x) offsetof(Stereo3DContext, x)
141 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
143 static const AVOption stereo3d_options[] = {
144 { "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"},
145 { "ab2l", "above below half height left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_LR}, 0, 0, FLAGS, "in" },
146 { "ab2r", "above below half height right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_RL}, 0, 0, FLAGS, "in" },
147 { "abl", "above below left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_LR}, 0, 0, FLAGS, "in" },
148 { "abr", "above below right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_RL}, 0, 0, FLAGS, "in" },
149 { "sbs2l", "side by side half width left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_LR}, 0, 0, FLAGS, "in" },
150 { "sbs2r", "side by side half width right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_RL}, 0, 0, FLAGS, "in" },
151 { "sbsl", "side by side left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_LR}, 0, 0, FLAGS, "in" },
152 { "sbsr", "side by side right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_RL}, 0, 0, FLAGS, "in" },
153 { "out", "set output format", OFFSET(out.format), AV_OPT_TYPE_INT, {.i64=ANAGLYPH_RC_DUBOIS}, 0, STEREO_CODE_COUNT-1, FLAGS, "out"},
154 { "ab2l", "above below half height left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_LR}, 0, 0, FLAGS, "out" },
155 { "ab2r", "above below half height right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_RL}, 0, 0, FLAGS, "out" },
156 { "abl", "above below left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_LR}, 0, 0, FLAGS, "out" },
157 { "abr", "above below right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_RL}, 0, 0, FLAGS, "out" },
158 { "agmc", "anaglyph green magenta color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_COLOR}, 0, 0, FLAGS, "out" },
159 { "agmd", "anaglyph green magenta dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_DUBOIS}, 0, 0, FLAGS, "out" },
160 { "agmg", "anaglyph green magenta gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_GRAY}, 0, 0, FLAGS, "out" },
161 { "agmh", "anaglyph green magenta half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_HALF}, 0, 0, FLAGS, "out" },
162 { "arbg", "anaglyph red blue gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RB_GRAY}, 0, 0, FLAGS, "out" },
163 { "arcc", "anaglyph red cyan color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_COLOR}, 0, 0, FLAGS, "out" },
164 { "arcd", "anaglyph red cyan dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_DUBOIS}, 0, 0, FLAGS, "out" },
165 { "arcg", "anaglyph red cyan gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_GRAY}, 0, 0, FLAGS, "out" },
166 { "arch", "anaglyph red cyan half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_HALF}, 0, 0, FLAGS, "out" },
167 { "argg", "anaglyph red green gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RG_GRAY}, 0, 0, FLAGS, "out" },
168 { "aybc", "anaglyph yellow blue color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_COLOR}, 0, 0, FLAGS, "out" },
169 { "aybd", "anaglyph yellow blue dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_DUBOIS}, 0, 0, FLAGS, "out" },
170 { "aybg", "anaglyph yellow blue gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_GRAY}, 0, 0, FLAGS, "out" },
171 { "aybh", "anaglyph yellow blue half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_HALF}, 0, 0, FLAGS, "out" },
172 { "irl", "interleave rows left first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_LR}, 0, 0, FLAGS, "out" },
173 { "irr", "interleave rows right first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_RL}, 0, 0, FLAGS, "out" },
174 { "ml", "mono left", 0, AV_OPT_TYPE_CONST, {.i64=MONO_L}, 0, 0, FLAGS, "out" },
175 { "mr", "mono right", 0, AV_OPT_TYPE_CONST, {.i64=MONO_R}, 0, 0, FLAGS, "out" },
176 { "sbs2l", "side by side half width left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_LR}, 0, 0, FLAGS, "out" },
177 { "sbs2r", "side by side half width right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_RL}, 0, 0, FLAGS, "out" },
178 { "sbsl", "side by side left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_LR}, 0, 0, FLAGS, "out" },
179 { "sbsr", "side by side right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_RL}, 0, 0, FLAGS, "out" },
183 AVFILTER_DEFINE_CLASS(stereo3d);
185 static const enum AVPixelFormat anaglyph_pix_fmts[] = { AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE };
186 static const enum AVPixelFormat other_pix_fmts[] = {
187 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
188 AV_PIX_FMT_RGB48BE, AV_PIX_FMT_BGR48BE,
189 AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE,
190 AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_BGRA64BE,
191 AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE,
192 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
193 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
194 AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
195 AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
197 AV_PIX_FMT_GBRP9BE, AV_PIX_FMT_GBRP9LE,
198 AV_PIX_FMT_GBRP10BE, AV_PIX_FMT_GBRP10LE,
199 AV_PIX_FMT_GBRP12BE, AV_PIX_FMT_GBRP12LE,
200 AV_PIX_FMT_GBRP14BE, AV_PIX_FMT_GBRP14LE,
201 AV_PIX_FMT_GBRP16BE, AV_PIX_FMT_GBRP16LE,
202 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
204 AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUVA444P9LE,
205 AV_PIX_FMT_YUV444P9BE, AV_PIX_FMT_YUVA444P9BE,
206 AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUVA444P10LE,
207 AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUVA444P10BE,
208 AV_PIX_FMT_YUV444P12BE, AV_PIX_FMT_YUV444P12LE,
209 AV_PIX_FMT_YUV444P14BE, AV_PIX_FMT_YUV444P14LE,
210 AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE,
211 AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE,
215 static int query_formats(AVFilterContext *ctx)
217 Stereo3DContext *s = ctx->priv;
218 const enum AVPixelFormat *pix_fmts;
220 switch (s->out.format) {
221 case ANAGLYPH_GM_COLOR:
222 case ANAGLYPH_GM_DUBOIS:
223 case ANAGLYPH_GM_GRAY:
224 case ANAGLYPH_GM_HALF:
225 case ANAGLYPH_RB_GRAY:
226 case ANAGLYPH_RC_COLOR:
227 case ANAGLYPH_RC_DUBOIS:
228 case ANAGLYPH_RC_GRAY:
229 case ANAGLYPH_RC_HALF:
230 case ANAGLYPH_RG_GRAY:
231 case ANAGLYPH_YB_COLOR:
232 case ANAGLYPH_YB_DUBOIS:
233 case ANAGLYPH_YB_GRAY:
234 case ANAGLYPH_YB_HALF:
235 pix_fmts = anaglyph_pix_fmts;
238 pix_fmts = other_pix_fmts;
241 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
246 static int config_output(AVFilterLink *outlink)
248 AVFilterContext *ctx = outlink->src;
249 AVFilterLink *inlink = ctx->inputs[0];
250 Stereo3DContext *s = ctx->priv;
251 AVRational aspect = inlink->sample_aspect_ratio;
252 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
255 switch (s->in.format) {
256 case SIDE_BY_SIDE_2_LR:
257 case SIDE_BY_SIDE_LR:
258 case SIDE_BY_SIDE_2_RL:
259 case SIDE_BY_SIDE_RL:
261 av_log(ctx, AV_LOG_ERROR, "width must be even\n");
262 return AVERROR_INVALIDDATA;
265 case ABOVE_BELOW_2_LR:
267 case ABOVE_BELOW_2_RL:
269 if (s->out.format == INTERLEAVE_ROWS_LR ||
270 s->out.format == INTERLEAVE_ROWS_RL) {
272 av_log(ctx, AV_LOG_ERROR, "height must be multiple of 4\n");
273 return AVERROR_INVALIDDATA;
277 av_log(ctx, AV_LOG_ERROR, "height must be even\n");
278 return AVERROR_INVALIDDATA;
284 s->width = inlink->w;
286 s->height = inlink->h;
295 switch (s->in.format) {
296 case SIDE_BY_SIDE_2_LR:
298 case SIDE_BY_SIDE_LR:
299 s->width = inlink->w / 2;
300 s->in.off_right = s->width;
302 case SIDE_BY_SIDE_2_RL:
304 case SIDE_BY_SIDE_RL:
305 s->width = inlink->w / 2;
306 s->in.off_left = s->width;
308 case ABOVE_BELOW_2_LR:
312 s->height = inlink->h / 2;
314 case ABOVE_BELOW_2_RL:
318 s->height = inlink->h / 2;
321 av_log(ctx, AV_LOG_ERROR, "input format %d is not supported\n", s->in.format);
322 return AVERROR(EINVAL);
325 s->out.width = s->width;
326 s->out.height = s->height;
332 s->out.row_right = 0;
334 switch (s->out.format) {
335 case ANAGLYPH_RB_GRAY:
336 case ANAGLYPH_RG_GRAY:
337 case ANAGLYPH_RC_GRAY:
338 case ANAGLYPH_RC_HALF:
339 case ANAGLYPH_RC_COLOR:
340 case ANAGLYPH_RC_DUBOIS:
341 case ANAGLYPH_GM_GRAY:
342 case ANAGLYPH_GM_HALF:
343 case ANAGLYPH_GM_COLOR:
344 case ANAGLYPH_GM_DUBOIS:
345 case ANAGLYPH_YB_GRAY:
346 case ANAGLYPH_YB_HALF:
347 case ANAGLYPH_YB_COLOR:
348 case ANAGLYPH_YB_DUBOIS:
349 memcpy(s->ana_matrix, ana_coeff[s->out.format], sizeof(s->ana_matrix));
351 case SIDE_BY_SIDE_2_LR:
353 case SIDE_BY_SIDE_LR:
354 s->out.width = s->width * 2;
355 s->out.off_right = s->width;
357 case SIDE_BY_SIDE_2_RL:
359 case SIDE_BY_SIDE_RL:
360 s->out.width = s->width * 2;
361 s->out.off_left = s->width;
363 case ABOVE_BELOW_2_LR:
366 s->out.height = s->height * 2;
367 s->out.row_right = s->height;
369 case ABOVE_BELOW_2_RL:
372 s->out.height = s->height * 2;
373 s->out.row_left = s->height;
375 case INTERLEAVE_ROWS_LR:
377 s->height = s->height / 2;
381 case INTERLEAVE_ROWS_RL:
383 s->height = s->height / 2;
388 s->in.off_left = s->in.off_right;
389 s->in.row_left = s->in.row_right;
393 av_log(ctx, AV_LOG_ERROR, "output format is not supported\n");
394 return AVERROR(EINVAL);
397 outlink->w = s->out.width;
398 outlink->h = s->out.height;
399 outlink->sample_aspect_ratio = aspect;
401 if ((ret = av_image_fill_linesizes(s->linesize, outlink->format, s->width)) < 0)
403 s->nb_planes = av_pix_fmt_count_planes(outlink->format);
404 av_image_fill_max_pixsteps(s->pixstep, NULL, desc);
409 static inline uint8_t ana_convert(const int *coeff, uint8_t *left, uint8_t *right)
413 sum = coeff[0] * left[0] + coeff[3] * right[0]; //red in
414 sum += coeff[1] * left[1] + coeff[4] * right[1]; //green in
415 sum += coeff[2] * left[2] + coeff[5] * right[2]; //blue in
417 return av_clip_uint8(sum >> 16);
420 static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
422 AVFilterContext *ctx = inlink->dst;
423 Stereo3DContext *s = ctx->priv;
424 AVFilterLink *outlink = ctx->outputs[0];
426 int out_off_left[4], out_off_right[4];
427 int in_off_left[4], in_off_right[4];
430 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
432 av_frame_free(&inpicref);
433 return AVERROR(ENOMEM);
435 av_frame_copy_props(out, inpicref);
437 for (i = 0; i < 4; i++) {
438 in_off_left[i] = (s->in.row_left + s->in.off_lstep) * inpicref->linesize[i] + s->in.off_left * s->pixstep[i];
439 in_off_right[i] = (s->in.row_right + s->in.off_rstep) * inpicref->linesize[i] + s->in.off_right * s->pixstep[i];
440 out_off_left[i] = (s->out.row_left + s->out.off_lstep) * out->linesize[i] + s->out.off_left * s->pixstep[i];
441 out_off_right[i] = (s->out.row_right + s->out.off_rstep) * out->linesize[i] + s->out.off_right * s->pixstep[i];
444 switch (s->out.format) {
445 case SIDE_BY_SIDE_LR:
446 case SIDE_BY_SIDE_RL:
447 case SIDE_BY_SIDE_2_LR:
448 case SIDE_BY_SIDE_2_RL:
451 case ABOVE_BELOW_2_LR:
452 case ABOVE_BELOW_2_RL:
453 case INTERLEAVE_ROWS_LR:
454 case INTERLEAVE_ROWS_RL:
455 for (i = 0; i < s->nb_planes; i++) {
456 av_image_copy_plane(out->data[i] + out_off_left[i],
457 out->linesize[i] * s->row_step,
458 inpicref->data[i] + in_off_left[i],
459 inpicref->linesize[i] * s->row_step,
460 s->linesize[i], s->height);
461 av_image_copy_plane(out->data[i] + out_off_right[i],
462 out->linesize[i] * s->row_step,
463 inpicref->data[i] + in_off_right[i],
464 inpicref->linesize[i] * s->row_step,
465 s->linesize[i], s->height);
470 for (i = 0; i < s->nb_planes; i++) {
471 av_image_copy_plane(out->data[i], out->linesize[i],
472 inpicref->data[i] + in_off_left[i],
473 inpicref->linesize[i],
474 s->linesize[i], s->height);
477 case ANAGLYPH_RB_GRAY:
478 case ANAGLYPH_RG_GRAY:
479 case ANAGLYPH_RC_GRAY:
480 case ANAGLYPH_RC_HALF:
481 case ANAGLYPH_RC_COLOR:
482 case ANAGLYPH_RC_DUBOIS:
483 case ANAGLYPH_GM_GRAY:
484 case ANAGLYPH_GM_HALF:
485 case ANAGLYPH_GM_COLOR:
486 case ANAGLYPH_GM_DUBOIS:
487 case ANAGLYPH_YB_GRAY:
488 case ANAGLYPH_YB_HALF:
489 case ANAGLYPH_YB_COLOR:
490 case ANAGLYPH_YB_DUBOIS: {
491 int i, x, y, il, ir, o;
492 uint8_t *src = inpicref->data[0];
493 uint8_t *dst = out->data[0];
494 int out_width = s->out.width;
497 for (i = 0; i < 3; i++)
498 ana_matrix[i] = s->ana_matrix[i];
500 for (y = 0; y < s->out.height; y++) {
501 o = out->linesize[0] * y;
502 il = in_off_left[0] + y * inpicref->linesize[0];
503 ir = in_off_right[0] + y * inpicref->linesize[0];
504 for (x = 0; x < out_width; x++, il += 3, ir += 3, o+= 3) {
505 dst[o ] = ana_convert(ana_matrix[0], src + il, src + ir);
506 dst[o + 1] = ana_convert(ana_matrix[1], src + il, src + ir);
507 dst[o + 2] = ana_convert(ana_matrix[2], src + il, src + ir);
516 av_frame_free(&inpicref);
517 return ff_filter_frame(outlink, out);
520 static const AVFilterPad stereo3d_inputs[] = {
523 .type = AVMEDIA_TYPE_VIDEO,
524 .filter_frame = filter_frame,
529 static const AVFilterPad stereo3d_outputs[] = {
532 .type = AVMEDIA_TYPE_VIDEO,
533 .config_props = config_output,
538 AVFilter avfilter_vf_stereo3d = {
540 .description = NULL_IF_CONFIG_SMALL("Convert video stereoscopic 3D view."),
541 .priv_size = sizeof(Stereo3DContext),
542 .query_formats = query_formats,
543 .inputs = stereo3d_inputs,
544 .outputs = stereo3d_outputs,
545 .priv_class = &stereo3d_class,