6f980b46e2688b407aaa3c7aaf58c85a19d9b711
[media-ctl.git] / src / main.c
1 /*
2  * Media controller test application
3  *
4  * Copyright (C) 2010-2011 Ideas on board SPRL
5  *
6  * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU Lesser General Public License as published
10  * by the Free Software Foundation; either version 2.1 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public License
19  * along with this program. If not, see <http://www.gnu.org/licenses/>.
20  */
21
22 #include <sys/ioctl.h>
23 #include <sys/mman.h>
24 #include <sys/stat.h>
25 #include <sys/time.h>
26
27 #include <ctype.h>
28 #include <errno.h>
29 #include <fcntl.h>
30 #include <stdbool.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <unistd.h>
35
36 #include <linux/media.h>
37 #include <linux/types.h>
38 #include <linux/v4l2-mediabus.h>
39 #include <linux/v4l2-subdev.h>
40 #include <linux/videodev2.h>
41
42 #include "mediactl.h"
43 #include "options.h"
44 #include "tools.h"
45 #include "v4l2subdev.h"
46
47 /* -----------------------------------------------------------------------------
48  * Printing
49  */
50
51 static void v4l2_subdev_print_format(struct media_entity *entity,
52         unsigned int pad, enum v4l2_subdev_format_whence which)
53 {
54         struct v4l2_mbus_framefmt format;
55         struct v4l2_rect rect;
56         int ret;
57
58         ret = v4l2_subdev_get_format(entity, &format, pad, which);
59         if (ret != 0)
60                 return;
61
62         printf("\t\t[fmt:%s/%ux%u",
63                v4l2_subdev_pixelcode_to_string(format.code),
64                format.width, format.height);
65
66         ret = v4l2_subdev_get_selection(entity, &rect, pad,
67                                         V4L2_SEL_TGT_CROP_BOUNDS,
68                                         which);
69         if (ret == 0)
70                 printf("\n\t\t crop.bounds:(%u,%u)/%ux%u", rect.left, rect.top,
71                        rect.width, rect.height);
72
73         ret = v4l2_subdev_get_selection(entity, &rect, pad,
74                                         V4L2_SEL_TGT_CROP,
75                                         which);
76         if (ret == 0)
77                 printf("\n\t\t crop:(%u,%u)/%ux%u", rect.left, rect.top,
78                        rect.width, rect.height);
79
80         ret = v4l2_subdev_get_selection(entity, &rect, pad,
81                                         V4L2_SEL_TGT_COMPOSE_BOUNDS,
82                                         which);
83         if (ret == 0)
84                 printf("\n\t\t compose.bounds:(%u,%u)/%ux%u",
85                        rect.left, rect.top, rect.width, rect.height);
86
87         ret = v4l2_subdev_get_selection(entity, &rect, pad,
88                                         V4L2_SEL_TGT_COMPOSE,
89                                         which);
90         if (ret == 0)
91                 printf("\n\t\t compose:(%u,%u)/%ux%u",
92                        rect.left, rect.top, rect.width, rect.height);
93
94         printf("]\n");
95 }
96
97 static const char *media_entity_type_to_string(unsigned type)
98 {
99         static const struct {
100                 __u32 type;
101                 const char *name;
102         } types[] = {
103                 { MEDIA_ENT_T_DEVNODE, "Node" },
104                 { MEDIA_ENT_T_V4L2_SUBDEV, "V4L2 subdev" },
105         };
106
107         unsigned int i;
108
109         type &= MEDIA_ENT_TYPE_MASK;
110
111         for (i = 0; i < ARRAY_SIZE(types); i++) {
112                 if (types[i].type == type)
113                         return types[i].name;
114         }
115
116         return "Unknown";
117 }
118
119 static const char *media_entity_subtype_to_string(unsigned type)
120 {
121         static const char *node_types[] = {
122                 "Unknown",
123                 "V4L",
124                 "FB",
125                 "ALSA",
126                 "DVB",
127         };
128         static const char *subdev_types[] = {
129                 "Unknown",
130                 "Sensor",
131                 "Flash",
132                 "Lens",
133         };
134
135         unsigned int subtype = type & MEDIA_ENT_SUBTYPE_MASK;
136
137         switch (type & MEDIA_ENT_TYPE_MASK) {
138         case MEDIA_ENT_T_DEVNODE:
139                 if (subtype >= ARRAY_SIZE(node_types))
140                         subtype = 0;
141                 return node_types[subtype];
142
143         case MEDIA_ENT_T_V4L2_SUBDEV:
144                 if (subtype >= ARRAY_SIZE(subdev_types))
145                         subtype = 0;
146                 return subdev_types[subtype];
147         default:
148                 return node_types[0];
149         }
150 }
151
152 static const char *media_pad_type_to_string(unsigned flag)
153 {
154         static const struct {
155                 __u32 flag;
156                 const char *name;
157         } flags[] = {
158                 { MEDIA_PAD_FL_SINK, "Sink" },
159                 { MEDIA_PAD_FL_SOURCE, "Source" },
160         };
161
162         unsigned int i;
163
164         for (i = 0; i < ARRAY_SIZE(flags); i++) {
165                 if (flags[i].flag & flag)
166                         return flags[i].name;
167         }
168
169         return "Unknown";
170 }
171
172 static void media_print_topology_dot(struct media_device *media)
173 {
174         unsigned int nents = media_get_entities_count(media);
175         unsigned int i, j;
176
177         printf("digraph board {\n");
178         printf("\trankdir=TB\n");
179
180         for (i = 0; i < nents; ++i) {
181                 struct media_entity *entity = media_get_entity(media, i);
182                 const struct media_entity_desc *info = media_entity_get_info(entity);
183                 const char *devname = media_entity_get_devname(entity);
184                 unsigned int num_links = media_entity_get_links_count(entity);
185                 unsigned int npads;
186
187                 switch (media_entity_type(entity)) {
188                 case MEDIA_ENT_T_DEVNODE:
189                         printf("\tn%08x [label=\"%s\\n%s\", shape=box, style=filled, "
190                                "fillcolor=yellow]\n",
191                                info->id, info->name, devname);
192                         break;
193
194                 case MEDIA_ENT_T_V4L2_SUBDEV:
195                         printf("\tn%08x [label=\"{{", info->id);
196
197                         for (j = 0, npads = 0; j < info->pads; ++j) {
198                                 const struct media_pad *pad = media_entity_get_pad(entity, j);
199
200                                 if (!(pad->flags & MEDIA_PAD_FL_SINK))
201                                         continue;
202
203                                 printf("%s<port%u> %u", npads ? " | " : "", j, j);
204                                 npads++;
205                         }
206
207                         printf("} | %s", info->name);
208                         if (devname)
209                                 printf("\\n%s", devname);
210                         printf(" | {");
211
212                         for (j = 0, npads = 0; j < info->pads; ++j) {
213                                 const struct media_pad *pad = media_entity_get_pad(entity, j);
214
215                                 if (!(pad->flags & MEDIA_PAD_FL_SOURCE))
216                                         continue;
217
218                                 printf("%s<port%u> %u", npads ? " | " : "", j, j);
219                                 npads++;
220                         }
221
222                         printf("}}\", shape=Mrecord, style=filled, fillcolor=green]\n");
223                         break;
224
225                 default:
226                         continue;
227                 }
228
229                 for (j = 0; j < num_links; j++) {
230                         const struct media_link *link = media_entity_get_link(entity, j);
231                         const struct media_pad *source = link->source;
232                         const struct media_pad *sink = link->sink;
233
234                         if (source->entity != entity)
235                                 continue;
236
237                         printf("\tn%08x", media_entity_get_info(source->entity)->id);
238                         if (media_entity_type(source->entity) == MEDIA_ENT_T_V4L2_SUBDEV)
239                                 printf(":port%u", source->index);
240                         printf(" -> ");
241                         printf("n%08x", media_entity_get_info(sink->entity)->id);
242                         if (media_entity_type(sink->entity) == MEDIA_ENT_T_V4L2_SUBDEV)
243                                 printf(":port%u", sink->index);
244
245                         if (link->flags & MEDIA_LNK_FL_IMMUTABLE)
246                                 printf(" [style=bold]");
247                         else if (!(link->flags & MEDIA_LNK_FL_ENABLED))
248                                 printf(" [style=dashed]");
249                         printf("\n");
250                 }
251         }
252
253         printf("}\n");
254 }
255
256 static void media_print_topology_text(struct media_device *media)
257 {
258         static const struct {
259                 __u32 flag;
260                 char *name;
261         } link_flags[] = {
262                 { MEDIA_LNK_FL_ENABLED, "ENABLED" },
263                 { MEDIA_LNK_FL_IMMUTABLE, "IMMUTABLE" },
264                 { MEDIA_LNK_FL_DYNAMIC, "DYNAMIC" },
265         };
266
267         unsigned int nents = media_get_entities_count(media);
268         unsigned int i, j, k;
269         unsigned int padding;
270
271         printf("Device topology\n");
272
273         for (i = 0; i < nents; ++i) {
274                 struct media_entity *entity = media_get_entity(media, i);
275                 const struct media_entity_desc *info = media_entity_get_info(entity);
276                 const char *devname = media_entity_get_devname(entity);
277                 unsigned int num_links = media_entity_get_links_count(entity);
278
279                 padding = printf("- entity %u: ", info->id);
280                 printf("%s (%u pad%s, %u link%s)\n", info->name,
281                         info->pads, info->pads > 1 ? "s" : "",
282                         num_links, num_links > 1 ? "s" : "");
283                 printf("%*ctype %s subtype %s flags %x\n", padding, ' ',
284                         media_entity_type_to_string(info->type),
285                         media_entity_subtype_to_string(info->type),
286                         info->flags);
287                 if (devname)
288                         printf("%*cdevice node name %s\n", padding, ' ', devname);
289
290                 for (j = 0; j < info->pads; j++) {
291                         const struct media_pad *pad = media_entity_get_pad(entity, j);
292
293                         printf("\tpad%u: %s\n", j, media_pad_type_to_string(pad->flags));
294
295                         if (media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV)
296                                 v4l2_subdev_print_format(entity, j, V4L2_SUBDEV_FORMAT_ACTIVE);
297
298                         for (k = 0; k < num_links; k++) {
299                                 const struct media_link *link = media_entity_get_link(entity, k);
300                                 const struct media_pad *source = link->source;
301                                 const struct media_pad *sink = link->sink;
302                                 bool first = true;
303                                 unsigned int i;
304
305                                 if (source->entity == entity && source->index == j)
306                                         printf("\t\t-> \"%s\":%u [",
307                                                 media_entity_get_info(sink->entity)->name,
308                                                 sink->index);
309                                 else if (sink->entity == entity && sink->index == j)
310                                         printf("\t\t<- \"%s\":%u [",
311                                                 media_entity_get_info(source->entity)->name,
312                                                 source->index);
313                                 else
314                                         continue;
315
316                                 for (i = 0; i < ARRAY_SIZE(link_flags); i++) {
317                                         if (!(link->flags & link_flags[i].flag))
318                                                 continue;
319                                         if (!first)
320                                                 printf(",");
321                                         printf("%s", link_flags[i].name);
322                                         first = false;
323                                 }
324
325                                 printf("]\n");
326                         }
327                 }
328                 printf("\n");
329         }
330 }
331
332 void media_print_topology(struct media_device *media, int dot)
333 {
334         if (dot)
335                 media_print_topology_dot(media);
336         else
337                 media_print_topology_text(media);
338 }
339
340 int main(int argc, char **argv)
341 {
342         struct media_device *media;
343         int ret = -1;
344
345         if (parse_cmdline(argc, argv))
346                 return EXIT_FAILURE;
347
348         media = media_device_new(media_opts.devname);
349         if (media == NULL) {
350                 printf("Failed to create media device\n");
351                 goto out;
352         }
353
354         if (media_opts.verbose)
355                 media_debug_set_handler(media,
356                         (void (*)(void *, ...))fprintf, stdout);
357
358         /* Enumerate entities, pads and links. */
359         ret = media_device_enumerate(media);
360         if (ret < 0) {
361                 printf("Failed to enumerate %s (%d)\n", media_opts.devname, ret);
362                 goto out;
363         }
364
365         if (media_opts.print) {
366                 const struct media_device_info *info = media_get_info(media);
367
368                 printf("Media controller API version %u.%u.%u\n\n",
369                        (info->media_version << 16) & 0xff,
370                        (info->media_version << 8) & 0xff,
371                        (info->media_version << 0) & 0xff);
372                 printf("Media device information\n"
373                        "------------------------\n"
374                        "driver          %s\n"
375                        "model           %s\n"
376                        "serial          %s\n"
377                        "bus info        %s\n"
378                        "hw revision     0x%x\n"
379                        "driver version  %u.%u.%u\n\n",
380                        info->driver, info->model,
381                        info->serial, info->bus_info,
382                        info->hw_revision,
383                        (info->driver_version << 16) & 0xff,
384                        (info->driver_version << 8) & 0xff,
385                        (info->driver_version << 0) & 0xff);
386         }
387
388         if (media_opts.entity) {
389                 struct media_entity *entity;
390
391                 entity = media_get_entity_by_name(media, media_opts.entity,
392                                                   strlen(media_opts.entity));
393                 if (entity == NULL) {
394                         printf("Entity '%s' not found\n", media_opts.entity);
395                         goto out;
396                 }
397
398                 printf("%s\n", media_entity_get_devname(entity));
399         }
400
401         if (media_opts.pad) {
402                 struct media_pad *pad;
403
404                 pad = media_parse_pad(media, media_opts.pad, NULL);
405                 if (pad == NULL) {
406                         printf("Pad '%s' not found\n", media_opts.pad);
407                         goto out;
408                 }
409
410                 v4l2_subdev_print_format(pad->entity, pad->index,
411                                          V4L2_SUBDEV_FORMAT_ACTIVE);
412         }
413
414         if (media_opts.print || media_opts.print_dot) {
415                 media_print_topology(media, media_opts.print_dot);
416                 printf("\n");
417         }
418
419         if (media_opts.reset) {
420                 if (media_opts.verbose)
421                         printf("Resetting all links to inactive\n");
422                 ret = media_reset_links(media);
423                 if (ret) {
424                         printf("Unable to reset links: %s (%d)\n",
425                                strerror(-ret), -ret);
426                         goto out;
427                 }
428         }
429
430         if (media_opts.links) {
431                 ret = media_parse_setup_links(media, media_opts.links);
432                 if (ret) {
433                         printf("Unable to parse link: %s (%d)\n",
434                                strerror(-ret), -ret);
435                         goto out;
436                 }
437         }
438
439         if (media_opts.formats) {
440                 ret = v4l2_subdev_parse_setup_formats(media,
441                                                       media_opts.formats);
442                 if (ret) {
443                         printf("Unable to setup formats: %s (%d)\n",
444                                strerror(-ret), -ret);
445                         goto out;
446                 }
447         }
448
449         if (media_opts.interactive) {
450                 while (1) {
451                         char buffer[32];
452                         char *end;
453
454                         printf("Enter a link to modify or enter to stop\n");
455                         if (fgets(buffer, sizeof buffer, stdin) == NULL)
456                                 break;
457
458                         if (buffer[0] == '\n')
459                                 break;
460
461                         ret = media_parse_setup_link(media, buffer, &end);
462                         if (ret)
463                                 printf("Unable to parse link: %s (%d)\n",
464                                        strerror(-ret), -ret);
465                 }
466         }
467
468         ret = 0;
469
470 out:
471         if (media)
472                 media_device_unref(media);
473
474         return ret ? EXIT_FAILURE : EXIT_SUCCESS;
475 }
476