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vf_stereo3d.c
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1 /*
2  * Copyright (c) 2010 Gordon Schmidt <gordon.schmidt <at> s2000.tu-chemnitz.de>
3  * Copyright (c) 2013 Paul B Mahol
4  *
5  * This file is part of FFmpeg.
6  *
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.
11  *
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.
16  *
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
20  */
21 
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"
27 #include "avfilter.h"
28 #include "drawutils.h"
29 #include "formats.h"
30 #include "internal.h"
31 #include "video.h"
32 
33 enum StereoCode {
34  ANAGLYPH_RC_GRAY, // anaglyph red/cyan gray
35  ANAGLYPH_RC_HALF, // anaglyph red/cyan half colored
36  ANAGLYPH_RC_COLOR, // anaglyph red/cyan colored
37  ANAGLYPH_RC_DUBOIS, // anaglyph red/cyan dubois
38  ANAGLYPH_GM_GRAY, // anaglyph green/magenta gray
39  ANAGLYPH_GM_HALF, // anaglyph green/magenta half colored
40  ANAGLYPH_GM_COLOR, // anaglyph green/magenta colored
41  ANAGLYPH_GM_DUBOIS, // anaglyph green/magenta dubois
42  ANAGLYPH_YB_GRAY, // anaglyph yellow/blue gray
43  ANAGLYPH_YB_HALF, // anaglyph yellow/blue half colored
44  ANAGLYPH_YB_COLOR, // anaglyph yellow/blue colored
45  ANAGLYPH_YB_DUBOIS, // anaglyph yellow/blue dubois
46  ANAGLYPH_RB_GRAY, // anaglyph red/blue gray
47  ANAGLYPH_RG_GRAY, // anaglyph red/green gray
48  MONO_L, // mono output for debugging (left eye only)
49  MONO_R, // mono output for debugging (right eye only)
50  INTERLEAVE_ROWS_LR, // row-interleave (left eye has top row)
51  INTERLEAVE_ROWS_RL, // row-interleave (right eye has top row)
52  SIDE_BY_SIDE_LR, // side by side parallel (left eye left, right eye right)
53  SIDE_BY_SIDE_RL, // side by side crosseye (right eye left, left eye right)
54  SIDE_BY_SIDE_2_LR, // side by side parallel with half width resolution
55  SIDE_BY_SIDE_2_RL, // side by side crosseye with half width resolution
56  ABOVE_BELOW_LR, // above-below (left eye above, right eye below)
57  ABOVE_BELOW_RL, // above-below (right eye above, left eye below)
58  ABOVE_BELOW_2_LR, // above-below with half height resolution
59  ABOVE_BELOW_2_RL, // above-below with half height resolution
60  ALTERNATING_LR, // alternating frames (left eye first, right eye second)
61  ALTERNATING_RL, // alternating frames (right eye first, left eye second)
62  STEREO_CODE_COUNT // TODO: needs autodetection
63 };
64 
65 typedef struct StereoComponent {
66  enum StereoCode format;
67  int width, height;
68  int off_left, off_right;
69  int off_lstep, off_rstep;
70  int row_left, row_right;
71 } StereoComponent;
72 
73 static const int ana_coeff[][3][6] = {
74  [ANAGLYPH_RB_GRAY] =
75  {{19595, 38470, 7471, 0, 0, 0},
76  { 0, 0, 0, 0, 0, 0},
77  { 0, 0, 0, 19595, 38470, 7471}},
78  [ANAGLYPH_RG_GRAY] =
79  {{19595, 38470, 7471, 0, 0, 0},
80  { 0, 0, 0, 19595, 38470, 7471},
81  { 0, 0, 0, 0, 0, 0}},
82  [ANAGLYPH_RC_GRAY] =
83  {{19595, 38470, 7471, 0, 0, 0},
84  { 0, 0, 0, 19595, 38470, 7471},
85  { 0, 0, 0, 19595, 38470, 7471}},
86  [ANAGLYPH_RC_HALF] =
87  {{19595, 38470, 7471, 0, 0, 0},
88  { 0, 0, 0, 0, 65536, 0},
89  { 0, 0, 0, 0, 0, 65536}},
90  [ANAGLYPH_RC_COLOR] =
91  {{65536, 0, 0, 0, 0, 0},
92  { 0, 0, 0, 0, 65536, 0},
93  { 0, 0, 0, 0, 0, 65536}},
94  [ANAGLYPH_RC_DUBOIS] =
95  {{29891, 32800, 11559, -2849, -5763, -102},
96  {-2627, -2479, -1033, 24804, 48080, -1209},
97  { -997, -1350, -358, -4729, -7403, 80373}},
98  [ANAGLYPH_GM_GRAY] =
99  {{ 0, 0, 0, 19595, 38470, 7471},
100  {19595, 38470, 7471, 0, 0, 0},
101  { 0, 0, 0, 19595, 38470, 7471}},
102  [ANAGLYPH_GM_HALF] =
103  {{ 0, 0, 0, 65536, 0, 0},
104  {19595, 38470, 7471, 0, 0, 0},
105  { 0, 0, 0, 0, 0, 65536}},
106  [ANAGLYPH_GM_COLOR] =
107  {{ 0, 0, 0, 65536, 0, 0},
108  { 0, 65536, 0, 0, 0, 0},
109  { 0, 0, 0, 0, 0, 65536}},
110  [ANAGLYPH_GM_DUBOIS] =
111  {{-4063,-10354, -2556, 34669, 46203, 1573},
112  {18612, 43778, 9372, -1049, -983, -4260},
113  { -983, -1769, 1376, 590, 4915, 61407}},
114  [ANAGLYPH_YB_GRAY] =
115  {{ 0, 0, 0, 19595, 38470, 7471},
116  { 0, 0, 0, 19595, 38470, 7471},
117  {19595, 38470, 7471, 0, 0, 0}},
118  [ANAGLYPH_YB_HALF] =
119  {{ 0, 0, 0, 65536, 0, 0},
120  { 0, 0, 0, 0, 65536, 0},
121  {19595, 38470, 7471, 0, 0, 0}},
122  [ANAGLYPH_YB_COLOR] =
123  {{ 0, 0, 0, 65536, 0, 0},
124  { 0, 0, 0, 0, 65536, 0},
125  { 0, 0, 65536, 0, 0, 0}},
126  [ANAGLYPH_YB_DUBOIS] =
127  {{65535,-12650,18451, -987, -7590, -1049},
128  {-1604, 56032, 4196, 370, 3826, -1049},
129  {-2345,-10676, 1358, 5801, 11416, 56217}},
130 };
131 
132 typedef struct Stereo3DContext {
133  const AVClass *class;
134  StereoComponent in, out;
135  int width, height;
136  int row_step;
137  const int *ana_matrix[3];
138  int nb_planes;
139  int linesize[4];
140  int pheight[4];
141  int hsub, vsub;
142  int pixstep[4];
143  AVFrame *prev;
144  double ts_unit;
145 } Stereo3DContext;
146 
147 #define OFFSET(x) offsetof(Stereo3DContext, x)
148 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
149 
150 static const AVOption stereo3d_options[] = {
151  { "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"},
152  { "ab2l", "above below half height left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_LR}, 0, 0, FLAGS, "in" },
153  { "ab2r", "above below half height right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_RL}, 0, 0, FLAGS, "in" },
154  { "abl", "above below left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_LR}, 0, 0, FLAGS, "in" },
155  { "abr", "above below right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_RL}, 0, 0, FLAGS, "in" },
156  { "al", "alternating frames left first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_LR}, 0, 0, FLAGS, "in" },
157  { "ar", "alternating frames right first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_RL}, 0, 0, FLAGS, "in" },
158  { "sbs2l", "side by side half width left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_LR}, 0, 0, FLAGS, "in" },
159  { "sbs2r", "side by side half width right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_RL}, 0, 0, FLAGS, "in" },
160  { "sbsl", "side by side left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_LR}, 0, 0, FLAGS, "in" },
161  { "sbsr", "side by side right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_RL}, 0, 0, FLAGS, "in" },
162  { "out", "set output format", OFFSET(out.format), AV_OPT_TYPE_INT, {.i64=ANAGLYPH_RC_DUBOIS}, 0, STEREO_CODE_COUNT-1, FLAGS, "out"},
163  { "ab2l", "above below half height left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_LR}, 0, 0, FLAGS, "out" },
164  { "ab2r", "above below half height right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_2_RL}, 0, 0, FLAGS, "out" },
165  { "abl", "above below left first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_LR}, 0, 0, FLAGS, "out" },
166  { "abr", "above below right first", 0, AV_OPT_TYPE_CONST, {.i64=ABOVE_BELOW_RL}, 0, 0, FLAGS, "out" },
167  { "agmc", "anaglyph green magenta color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_COLOR}, 0, 0, FLAGS, "out" },
168  { "agmd", "anaglyph green magenta dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_DUBOIS}, 0, 0, FLAGS, "out" },
169  { "agmg", "anaglyph green magenta gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_GRAY}, 0, 0, FLAGS, "out" },
170  { "agmh", "anaglyph green magenta half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_GM_HALF}, 0, 0, FLAGS, "out" },
171  { "al", "alternating frames left first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_LR}, 0, 0, FLAGS, "out" },
172  { "ar", "alternating frames right first", 0, AV_OPT_TYPE_CONST, {.i64=ALTERNATING_RL}, 0, 0, FLAGS, "out" },
173  { "arbg", "anaglyph red blue gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RB_GRAY}, 0, 0, FLAGS, "out" },
174  { "arcc", "anaglyph red cyan color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_COLOR}, 0, 0, FLAGS, "out" },
175  { "arcd", "anaglyph red cyan dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_DUBOIS}, 0, 0, FLAGS, "out" },
176  { "arcg", "anaglyph red cyan gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_GRAY}, 0, 0, FLAGS, "out" },
177  { "arch", "anaglyph red cyan half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RC_HALF}, 0, 0, FLAGS, "out" },
178  { "argg", "anaglyph red green gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_RG_GRAY}, 0, 0, FLAGS, "out" },
179  { "aybc", "anaglyph yellow blue color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_COLOR}, 0, 0, FLAGS, "out" },
180  { "aybd", "anaglyph yellow blue dubois", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_DUBOIS}, 0, 0, FLAGS, "out" },
181  { "aybg", "anaglyph yellow blue gray", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_GRAY}, 0, 0, FLAGS, "out" },
182  { "aybh", "anaglyph yellow blue half color", 0, AV_OPT_TYPE_CONST, {.i64=ANAGLYPH_YB_HALF}, 0, 0, FLAGS, "out" },
183  { "irl", "interleave rows left first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_LR}, 0, 0, FLAGS, "out" },
184  { "irr", "interleave rows right first", 0, AV_OPT_TYPE_CONST, {.i64=INTERLEAVE_ROWS_RL}, 0, 0, FLAGS, "out" },
185  { "ml", "mono left", 0, AV_OPT_TYPE_CONST, {.i64=MONO_L}, 0, 0, FLAGS, "out" },
186  { "mr", "mono right", 0, AV_OPT_TYPE_CONST, {.i64=MONO_R}, 0, 0, FLAGS, "out" },
187  { "sbs2l", "side by side half width left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_LR}, 0, 0, FLAGS, "out" },
188  { "sbs2r", "side by side half width right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_2_RL}, 0, 0, FLAGS, "out" },
189  { "sbsl", "side by side left first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_LR}, 0, 0, FLAGS, "out" },
190  { "sbsr", "side by side right first", 0, AV_OPT_TYPE_CONST, {.i64=SIDE_BY_SIDE_RL}, 0, 0, FLAGS, "out" },
191  { NULL }
192 };
193 
194 AVFILTER_DEFINE_CLASS(stereo3d);
195 
196 static const enum AVPixelFormat anaglyph_pix_fmts[] = {
197  AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
198  AV_PIX_FMT_NONE
199 };
200 
201 static const enum AVPixelFormat other_pix_fmts[] = {
202  AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
203  AV_PIX_FMT_RGB48BE, AV_PIX_FMT_BGR48BE,
204  AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE,
205  AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_BGRA64BE,
206  AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE,
207  AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
208  AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
209  AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
210  AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
211  AV_PIX_FMT_GBRP,
212  AV_PIX_FMT_GBRP9BE, AV_PIX_FMT_GBRP9LE,
213  AV_PIX_FMT_GBRP10BE, AV_PIX_FMT_GBRP10LE,
214  AV_PIX_FMT_GBRP12BE, AV_PIX_FMT_GBRP12LE,
215  AV_PIX_FMT_GBRP14BE, AV_PIX_FMT_GBRP14LE,
216  AV_PIX_FMT_GBRP16BE, AV_PIX_FMT_GBRP16LE,
217  AV_PIX_FMT_YUV410P,
218  AV_PIX_FMT_YUV411P,
219  AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
220  AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
221  AV_PIX_FMT_YUV440P,
222  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
223  AV_PIX_FMT_YUVJ411P,
224  AV_PIX_FMT_YUVJ420P,
225  AV_PIX_FMT_YUVJ422P,
226  AV_PIX_FMT_YUVJ440P,
227  AV_PIX_FMT_YUVJ444P,
228  AV_PIX_FMT_YUV420P9LE, AV_PIX_FMT_YUVA420P9LE,
229  AV_PIX_FMT_YUV420P9BE, AV_PIX_FMT_YUVA420P9BE,
230  AV_PIX_FMT_YUV422P9LE, AV_PIX_FMT_YUVA422P9LE,
231  AV_PIX_FMT_YUV422P9BE, AV_PIX_FMT_YUVA422P9BE,
232  AV_PIX_FMT_YUV444P9LE, AV_PIX_FMT_YUVA444P9LE,
233  AV_PIX_FMT_YUV444P9BE, AV_PIX_FMT_YUVA444P9BE,
234  AV_PIX_FMT_YUV420P10LE, AV_PIX_FMT_YUVA420P10LE,
235  AV_PIX_FMT_YUV420P10BE, AV_PIX_FMT_YUVA420P10BE,
236  AV_PIX_FMT_YUV422P10LE, AV_PIX_FMT_YUVA422P10LE,
237  AV_PIX_FMT_YUV422P10BE, AV_PIX_FMT_YUVA422P10BE,
238  AV_PIX_FMT_YUV444P10LE, AV_PIX_FMT_YUVA444P10LE,
239  AV_PIX_FMT_YUV444P10BE, AV_PIX_FMT_YUVA444P10BE,
240  AV_PIX_FMT_YUV420P12BE, AV_PIX_FMT_YUV420P12LE,
241  AV_PIX_FMT_YUV422P12BE, AV_PIX_FMT_YUV422P12LE,
242  AV_PIX_FMT_YUV444P12BE, AV_PIX_FMT_YUV444P12LE,
243  AV_PIX_FMT_YUV420P14BE, AV_PIX_FMT_YUV420P14LE,
244  AV_PIX_FMT_YUV422P14BE, AV_PIX_FMT_YUV422P14LE,
245  AV_PIX_FMT_YUV444P14BE, AV_PIX_FMT_YUV444P14LE,
246  AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUVA420P16LE,
247  AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUVA420P16BE,
248  AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUVA422P16LE,
249  AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUVA422P16BE,
250  AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE,
251  AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE,
252  AV_PIX_FMT_NONE
253 };
254 
255 static int query_formats(AVFilterContext *ctx)
256 {
257  Stereo3DContext *s = ctx->priv;
258  const enum AVPixelFormat *pix_fmts;
259 
260  switch (s->out.format) {
261  case ANAGLYPH_GM_COLOR:
262  case ANAGLYPH_GM_DUBOIS:
263  case ANAGLYPH_GM_GRAY:
264  case ANAGLYPH_GM_HALF:
265  case ANAGLYPH_RB_GRAY:
266  case ANAGLYPH_RC_COLOR:
267  case ANAGLYPH_RC_DUBOIS:
268  case ANAGLYPH_RC_GRAY:
269  case ANAGLYPH_RC_HALF:
270  case ANAGLYPH_RG_GRAY:
271  case ANAGLYPH_YB_COLOR:
272  case ANAGLYPH_YB_DUBOIS:
273  case ANAGLYPH_YB_GRAY:
274  case ANAGLYPH_YB_HALF:
275  pix_fmts = anaglyph_pix_fmts;
276  break;
277  default:
278  pix_fmts = other_pix_fmts;
279  }
280 
281  ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
282 
283  return 0;
284 }
285 
286 static int config_output(AVFilterLink *outlink)
287 {
288  AVFilterContext *ctx = outlink->src;
289  AVFilterLink *inlink = ctx->inputs[0];
290  Stereo3DContext *s = ctx->priv;
291  AVRational aspect = inlink->sample_aspect_ratio;
292  AVRational fps = inlink->frame_rate;
293  AVRational tb = inlink->time_base;
294  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
295  int ret;
296 
297  switch (s->in.format) {
298  case SIDE_BY_SIDE_2_LR:
299  case SIDE_BY_SIDE_LR:
300  case SIDE_BY_SIDE_2_RL:
301  case SIDE_BY_SIDE_RL:
302  if (inlink->w & 1) {
303  av_log(ctx, AV_LOG_ERROR, "width must be even\n");
304  return AVERROR_INVALIDDATA;
305  }
306  break;
307  case ABOVE_BELOW_2_LR:
308  case ABOVE_BELOW_LR:
309  case ABOVE_BELOW_2_RL:
310  case ABOVE_BELOW_RL:
311  if (s->out.format == INTERLEAVE_ROWS_LR ||
312  s->out.format == INTERLEAVE_ROWS_RL) {
313  if (inlink->h & 3) {
314  av_log(ctx, AV_LOG_ERROR, "height must be multiple of 4\n");
315  return AVERROR_INVALIDDATA;
316  }
317  }
318  if (inlink->h & 1) {
319  av_log(ctx, AV_LOG_ERROR, "height must be even\n");
320  return AVERROR_INVALIDDATA;
321  }
322  break;
323  }
324 
325  s->in.width =
326  s->width = inlink->w;
327  s->in.height =
328  s->height = inlink->h;
329  s->row_step = 1;
330  s->in.off_lstep =
331  s->in.off_rstep =
332  s->in.off_left =
333  s->in.off_right =
334  s->in.row_left =
335  s->in.row_right = 0;
336 
337  switch (s->in.format) {
338  case SIDE_BY_SIDE_2_LR:
339  aspect.num *= 2;
340  case SIDE_BY_SIDE_LR:
341  s->width = inlink->w / 2;
342  s->in.off_right = s->width;
343  break;
344  case SIDE_BY_SIDE_2_RL:
345  aspect.num *= 2;
346  case SIDE_BY_SIDE_RL:
347  s->width = inlink->w / 2;
348  s->in.off_left = s->width;
349  break;
350  case ABOVE_BELOW_2_LR:
351  aspect.den *= 2;
352  case ABOVE_BELOW_LR:
353  s->in.row_right =
354  s->height = inlink->h / 2;
355  break;
356  case ABOVE_BELOW_2_RL:
357  aspect.den *= 2;
358  case ABOVE_BELOW_RL:
359  s->in.row_left =
360  s->height = inlink->h / 2;
361  break;
362  case ALTERNATING_RL:
363  case ALTERNATING_LR:
364  outlink->flags |= FF_LINK_FLAG_REQUEST_LOOP;
365  fps.den *= 2;
366  tb.num *= 2;
367  break;
368  default:
369  av_log(ctx, AV_LOG_ERROR, "input format %d is not supported\n", s->in.format);
370  return AVERROR(EINVAL);
371  }
372 
373  s->out.width = s->width;
374  s->out.height = s->height;
375  s->out.off_lstep =
376  s->out.off_rstep =
377  s->out.off_left =
378  s->out.off_right =
379  s->out.row_left =
380  s->out.row_right = 0;
381 
382  switch (s->out.format) {
383  case ANAGLYPH_RB_GRAY:
384  case ANAGLYPH_RG_GRAY:
385  case ANAGLYPH_RC_GRAY:
386  case ANAGLYPH_RC_HALF:
387  case ANAGLYPH_RC_COLOR:
388  case ANAGLYPH_RC_DUBOIS:
389  case ANAGLYPH_GM_GRAY:
390  case ANAGLYPH_GM_HALF:
391  case ANAGLYPH_GM_COLOR:
392  case ANAGLYPH_GM_DUBOIS:
393  case ANAGLYPH_YB_GRAY:
394  case ANAGLYPH_YB_HALF:
395  case ANAGLYPH_YB_COLOR:
396  case ANAGLYPH_YB_DUBOIS: {
397  uint8_t rgba_map[4];
398 
399  ff_fill_rgba_map(rgba_map, outlink->format);
400  s->ana_matrix[rgba_map[0]] = &ana_coeff[s->out.format][0][0];
401  s->ana_matrix[rgba_map[1]] = &ana_coeff[s->out.format][1][0];
402  s->ana_matrix[rgba_map[2]] = &ana_coeff[s->out.format][2][0];
403  break;
404  }
405  case SIDE_BY_SIDE_2_LR:
406  aspect.den *= 2;
407  case SIDE_BY_SIDE_LR:
408  s->out.width = s->width * 2;
409  s->out.off_right = s->width;
410  break;
411  case SIDE_BY_SIDE_2_RL:
412  aspect.den *= 2;
413  case SIDE_BY_SIDE_RL:
414  s->out.width = s->width * 2;
415  s->out.off_left = s->width;
416  break;
417  case ABOVE_BELOW_2_LR:
418  aspect.num *= 2;
419  case ABOVE_BELOW_LR:
420  s->out.height = s->height * 2;
421  s->out.row_right = s->height;
422  break;
423  case ABOVE_BELOW_2_RL:
424  aspect.num *= 2;
425  case ABOVE_BELOW_RL:
426  s->out.height = s->height * 2;
427  s->out.row_left = s->height;
428  break;
429  case INTERLEAVE_ROWS_LR:
430  s->row_step = 2;
431  s->height = s->height / 2;
432  s->out.off_rstep =
433  s->in.off_rstep = 1;
434  break;
435  case INTERLEAVE_ROWS_RL:
436  s->row_step = 2;
437  s->height = s->height / 2;
438  s->out.off_lstep =
439  s->in.off_lstep = 1;
440  break;
441  case MONO_R:
442  s->in.off_left = s->in.off_right;
443  s->in.row_left = s->in.row_right;
444  case MONO_L:
445  break;
446  case ALTERNATING_RL:
447  case ALTERNATING_LR:
448  fps.num *= 2;
449  tb.den *= 2;
450  break;
451  default:
452  av_log(ctx, AV_LOG_ERROR, "output format %d is not supported\n", s->out.format);
453  return AVERROR(EINVAL);
454  }
455 
456  outlink->w = s->out.width;
457  outlink->h = s->out.height;
458  outlink->frame_rate = fps;
459  outlink->time_base = tb;
460  outlink->sample_aspect_ratio = aspect;
461 
462  if ((ret = av_image_fill_linesizes(s->linesize, outlink->format, s->width)) < 0)
463  return ret;
464  s->nb_planes = av_pix_fmt_count_planes(outlink->format);
465  av_image_fill_max_pixsteps(s->pixstep, NULL, desc);
466  s->ts_unit = av_q2d(av_inv_q(av_mul_q(outlink->frame_rate, outlink->time_base)));
467  s->pheight[1] = s->pheight[2] = FF_CEIL_RSHIFT(s->height, desc->log2_chroma_h);
468  s->pheight[0] = s->pheight[3] = s->height;
469  s->hsub = desc->log2_chroma_w;
470  s->vsub = desc->log2_chroma_h;
471 
472  return 0;
473 }
474 
475 static inline uint8_t ana_convert(const int *coeff, const uint8_t *left, const uint8_t *right)
476 {
477  int sum;
478 
479  sum = coeff[0] * left[0] + coeff[3] * right[0]; //red in
480  sum += coeff[1] * left[1] + coeff[4] * right[1]; //green in
481  sum += coeff[2] * left[2] + coeff[5] * right[2]; //blue in
482 
483  return av_clip_uint8(sum >> 16);
484 }
485 
486 static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
487 {
488  AVFilterContext *ctx = inlink->dst;
489  Stereo3DContext *s = ctx->priv;
490  AVFilterLink *outlink = ctx->outputs[0];
491  AVFrame *out, *oleft, *oright, *ileft, *iright;
492  int out_off_left[4], out_off_right[4];
493  int in_off_left[4], in_off_right[4];
494  int i;
495 
496  switch (s->in.format) {
497  case ALTERNATING_LR:
498  case ALTERNATING_RL:
499  if (!s->prev) {
500  s->prev = inpicref;
501  return 0;
502  }
503  ileft = s->prev;
504  iright = inpicref;
505  if (s->in.format == ALTERNATING_RL)
506  FFSWAP(AVFrame *, ileft, iright);
507  break;
508  default:
509  ileft = iright = inpicref;
510  };
511 
512  out = oleft = oright = ff_get_video_buffer(outlink, outlink->w, outlink->h);
513  if (!out) {
514  av_frame_free(&s->prev);
515  av_frame_free(&inpicref);
516  return AVERROR(ENOMEM);
517  }
518  av_frame_copy_props(out, inpicref);
519 
520  if (s->out.format == ALTERNATING_LR ||
521  s->out.format == ALTERNATING_RL) {
522  oright = ff_get_video_buffer(outlink, outlink->w, outlink->h);
523  if (!oright) {
524  av_frame_free(&oleft);
525  av_frame_free(&s->prev);
526  av_frame_free(&inpicref);
527  return AVERROR(ENOMEM);
528  }
529  av_frame_copy_props(oright, inpicref);
530  }
531 
532  for (i = 0; i < 4; i++) {
533  int hsub = i == 1 || i == 2 ? s->hsub : 0;
534  int vsub = i == 1 || i == 2 ? s->vsub : 0;
535  in_off_left[i] = (FF_CEIL_RSHIFT(s->in.row_left, vsub) + s->in.off_lstep) * ileft->linesize[i] + FF_CEIL_RSHIFT(s->in.off_left * s->pixstep[i], hsub);
536  in_off_right[i] = (FF_CEIL_RSHIFT(s->in.row_right, vsub) + s->in.off_rstep) * iright->linesize[i] + FF_CEIL_RSHIFT(s->in.off_right * s->pixstep[i], hsub);
537  out_off_left[i] = (FF_CEIL_RSHIFT(s->out.row_left, vsub) + s->out.off_lstep) * oleft->linesize[i] + FF_CEIL_RSHIFT(s->out.off_left * s->pixstep[i], hsub);
538  out_off_right[i] = (FF_CEIL_RSHIFT(s->out.row_right, vsub) + s->out.off_rstep) * oright->linesize[i] + FF_CEIL_RSHIFT(s->out.off_right * s->pixstep[i], hsub);
539  }
540 
541  switch (s->out.format) {
542  case ALTERNATING_LR:
543  case ALTERNATING_RL:
544  case SIDE_BY_SIDE_LR:
545  case SIDE_BY_SIDE_RL:
546  case SIDE_BY_SIDE_2_LR:
547  case SIDE_BY_SIDE_2_RL:
548  case ABOVE_BELOW_LR:
549  case ABOVE_BELOW_RL:
550  case ABOVE_BELOW_2_LR:
551  case ABOVE_BELOW_2_RL:
552  case INTERLEAVE_ROWS_LR:
553  case INTERLEAVE_ROWS_RL:
554  for (i = 0; i < s->nb_planes; i++) {
555  av_image_copy_plane(oleft->data[i] + out_off_left[i],
556  oleft->linesize[i] * s->row_step,
557  ileft->data[i] + in_off_left[i],
558  ileft->linesize[i] * s->row_step,
559  s->linesize[i], s->pheight[i]);
560  av_image_copy_plane(oright->data[i] + out_off_right[i],
561  oright->linesize[i] * s->row_step,
562  iright->data[i] + in_off_right[i],
563  iright->linesize[i] * s->row_step,
564  s->linesize[i], s->pheight[i]);
565  }
566  break;
567  case MONO_L:
568  iright = ileft;
569  case MONO_R:
570  for (i = 0; i < s->nb_planes; i++) {
571  av_image_copy_plane(out->data[i], out->linesize[i],
572  iright->data[i] + in_off_left[i],
573  iright->linesize[i],
574  s->linesize[i], s->pheight[i]);
575  }
576  break;
577  case ANAGLYPH_RB_GRAY:
578  case ANAGLYPH_RG_GRAY:
579  case ANAGLYPH_RC_GRAY:
580  case ANAGLYPH_RC_HALF:
581  case ANAGLYPH_RC_COLOR:
582  case ANAGLYPH_RC_DUBOIS:
583  case ANAGLYPH_GM_GRAY:
584  case ANAGLYPH_GM_HALF:
585  case ANAGLYPH_GM_COLOR:
586  case ANAGLYPH_GM_DUBOIS:
587  case ANAGLYPH_YB_GRAY:
588  case ANAGLYPH_YB_HALF:
589  case ANAGLYPH_YB_COLOR:
590  case ANAGLYPH_YB_DUBOIS: {
591  int x, y, il, ir, o;
592  const uint8_t *lsrc = ileft->data[0];
593  const uint8_t *rsrc = iright->data[0];
594  uint8_t *dst = out->data[0];
595  int out_width = s->out.width;
596  const int **ana_matrix = s->ana_matrix;
597 
598  for (y = 0; y < s->out.height; y++) {
599  o = out->linesize[0] * y;
600  il = in_off_left[0] + y * ileft->linesize[0];
601  ir = in_off_right[0] + y * iright->linesize[0];
602  for (x = 0; x < out_width; x++, il += 3, ir += 3, o+= 3) {
603  dst[o ] = ana_convert(ana_matrix[0], lsrc + il, rsrc + ir);
604  dst[o + 1] = ana_convert(ana_matrix[1], lsrc + il, rsrc + ir);
605  dst[o + 2] = ana_convert(ana_matrix[2], lsrc + il, rsrc + ir);
606  }
607  }
608  break;
609  }
610  default:
611  av_assert0(0);
612  }
613 
614  av_frame_free(&inpicref);
615  av_frame_free(&s->prev);
616  if (oright != oleft) {
617  if (s->out.format == ALTERNATING_LR)
618  FFSWAP(AVFrame *, oleft, oright);
619  oright->pts = outlink->frame_count * s->ts_unit;
620  ff_filter_frame(outlink, oright);
621  out = oleft;
622  oleft->pts = outlink->frame_count * s->ts_unit;
623  } else if (s->in.format == ALTERNATING_LR ||
624  s->in.format == ALTERNATING_RL) {
625  out->pts = outlink->frame_count * s->ts_unit;
626  }
627  return ff_filter_frame(outlink, out);
628 }
629 
630 static av_cold void uninit(AVFilterContext *ctx)
631 {
632  Stereo3DContext *s = ctx->priv;
633 
634  av_frame_free(&s->prev);
635 }
636 
637 static const AVFilterPad stereo3d_inputs[] = {
638  {
639  .name = "default",
640  .type = AVMEDIA_TYPE_VIDEO,
641  .filter_frame = filter_frame,
642  },
643  { NULL }
644 };
645 
646 static const AVFilterPad stereo3d_outputs[] = {
647  {
648  .name = "default",
649  .type = AVMEDIA_TYPE_VIDEO,
650  .config_props = config_output,
651  },
652  { NULL }
653 };
654 
655 AVFilter ff_vf_stereo3d = {
656  .name = "stereo3d",
657  .description = NULL_IF_CONFIG_SMALL("Convert video stereoscopic 3D view."),
658  .priv_size = sizeof(Stereo3DContext),
659  .uninit = uninit,
660  .query_formats = query_formats,
661  .inputs = stereo3d_inputs,
662  .outputs = stereo3d_outputs,
663  .priv_class = &stereo3d_class,
664 };
Generated on Sun Mar 23 2014 23:50:09 for FFmpeg by   doxygen 1.8.2