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[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 i, j;
175
176         printf("digraph board {\n");
177         printf("\trankdir=TB\n");
178
179         for (i = 0; i < media->entities_count; ++i) {
180                 struct media_entity *entity = &media->entities[i];
181                 unsigned int npads;
182
183                 switch (media_entity_type(entity)) {
184                 case MEDIA_ENT_T_DEVNODE:
185                         printf("\tn%08x [label=\"%s\\n%s\", shape=box, style=filled, "
186                                "fillcolor=yellow]\n",
187                                entity->info.id, entity->info.name, entity->devname);
188                         break;
189
190                 case MEDIA_ENT_T_V4L2_SUBDEV:
191                         printf("\tn%08x [label=\"{{", entity->info.id);
192
193                         for (j = 0, npads = 0; j < entity->info.pads; ++j) {
194                                 if (!(entity->pads[j].flags & MEDIA_PAD_FL_SINK))
195                                         continue;
196
197                                 printf("%s<port%u> %u", npads ? " | " : "", j, j);
198                                 npads++;
199                         }
200
201                         printf("} | %s", entity->info.name);
202                         if (entity->devname)
203                                 printf("\\n%s", entity->devname);
204                         printf(" | {");
205
206                         for (j = 0, npads = 0; j < entity->info.pads; ++j) {
207                                 if (!(entity->pads[j].flags & MEDIA_PAD_FL_SOURCE))
208                                         continue;
209
210                                 printf("%s<port%u> %u", npads ? " | " : "", j, j);
211                                 npads++;
212                         }
213
214                         printf("}}\", shape=Mrecord, style=filled, fillcolor=green]\n");
215                         break;
216
217                 default:
218                         continue;
219                 }
220
221                 for (j = 0; j < entity->num_links; j++) {
222                         struct media_link *link = &entity->links[j];
223
224                         if (link->source->entity != entity)
225                                 continue;
226
227                         printf("\tn%08x", link->source->entity->info.id);
228                         if (media_entity_type(link->source->entity) == MEDIA_ENT_T_V4L2_SUBDEV)
229                                 printf(":port%u", link->source->index);
230                         printf(" -> ");
231                         printf("n%08x", link->sink->entity->info.id);
232                         if (media_entity_type(link->sink->entity) == MEDIA_ENT_T_V4L2_SUBDEV)
233                                 printf(":port%u", link->sink->index);
234
235                         if (link->flags & MEDIA_LNK_FL_IMMUTABLE)
236                                 printf(" [style=bold]");
237                         else if (!(link->flags & MEDIA_LNK_FL_ENABLED))
238                                 printf(" [style=dashed]");
239                         printf("\n");
240                 }
241         }
242
243         printf("}\n");
244 }
245
246 static void media_print_topology_text(struct media_device *media)
247 {
248         static const struct {
249                 __u32 flag;
250                 char *name;
251         } link_flags[] = {
252                 { MEDIA_LNK_FL_ENABLED, "ENABLED" },
253                 { MEDIA_LNK_FL_IMMUTABLE, "IMMUTABLE" },
254                 { MEDIA_LNK_FL_DYNAMIC, "DYNAMIC" },
255         };
256
257         unsigned int i, j, k;
258         unsigned int padding;
259
260         printf("Device topology\n");
261
262         for (i = 0; i < media->entities_count; ++i) {
263                 struct media_entity *entity = &media->entities[i];
264
265                 padding = printf("- entity %u: ", entity->info.id);
266                 printf("%s (%u pad%s, %u link%s)\n", entity->info.name,
267                         entity->info.pads, entity->info.pads > 1 ? "s" : "",
268                         entity->num_links, entity->num_links > 1 ? "s" : "");
269                 printf("%*ctype %s subtype %s flags %x\n", padding, ' ',
270                         media_entity_type_to_string(entity->info.type),
271                         media_entity_subtype_to_string(entity->info.type),
272                         entity->info.flags);
273                 if (entity->devname[0])
274                         printf("%*cdevice node name %s\n", padding, ' ', entity->devname);
275
276                 for (j = 0; j < entity->info.pads; j++) {
277                         struct media_pad *pad = &entity->pads[j];
278
279                         printf("\tpad%u: %s\n", j, media_pad_type_to_string(pad->flags));
280
281                         if (media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV)
282                                 v4l2_subdev_print_format(entity, j, V4L2_SUBDEV_FORMAT_ACTIVE);
283
284                         for (k = 0; k < entity->num_links; k++) {
285                                 struct media_link *link = &entity->links[k];
286                                 struct media_pad *source = link->source;
287                                 struct media_pad *sink = link->sink;
288                                 bool first = true;
289                                 unsigned int i;
290
291                                 if (source->entity == entity && source->index == j)
292                                         printf("\t\t-> \"%s\":%u [",
293                                                 sink->entity->info.name, sink->index);
294                                 else if (sink->entity == entity && sink->index == j)
295                                         printf("\t\t<- \"%s\":%u [",
296                                                 source->entity->info.name, source->index);
297                                 else
298                                         continue;
299
300                                 for (i = 0; i < ARRAY_SIZE(link_flags); i++) {
301                                         if (!(link->flags & link_flags[i].flag))
302                                                 continue;
303                                         if (!first)
304                                                 printf(",");
305                                         printf("%s", link_flags[i].name);
306                                         first = false;
307                                 }
308
309                                 printf("]\n");
310                         }
311                 }
312                 printf("\n");
313         }
314 }
315
316 void media_print_topology(struct media_device *media, int dot)
317 {
318         if (dot)
319                 media_print_topology_dot(media);
320         else
321                 media_print_topology_text(media);
322 }
323
324 int main(int argc, char **argv)
325 {
326         struct media_device *media;
327         int ret = -1;
328
329         if (parse_cmdline(argc, argv))
330                 return EXIT_FAILURE;
331
332         /* Open the media device and enumerate entities, pads and links. */
333         if (media_opts.verbose)
334                 media = media_open_debug(
335                         media_opts.devname,
336                         (void (*)(void *, ...))fprintf, stdout);
337         else
338                 media = media_open(media_opts.devname);
339         if (media == NULL) {
340                 printf("Failed to open %s\n", media_opts.devname);
341                 goto out;
342         }
343
344         if (media_opts.print) {
345                 printf("Media controller API version %u.%u.%u\n\n",
346                        (media->info.media_version << 16) & 0xff,
347                        (media->info.media_version << 8) & 0xff,
348                        (media->info.media_version << 0) & 0xff);
349                 printf("Media device information\n"
350                        "------------------------\n"
351                        "driver          %s\n"
352                        "model           %s\n"
353                        "serial          %s\n"
354                        "bus info        %s\n"
355                        "hw revision     0x%x\n"
356                        "driver version  %u.%u.%u\n\n",
357                        media->info.driver, media->info.model,
358                        media->info.serial, media->info.bus_info,
359                        media->info.hw_revision,
360                        (media->info.driver_version << 16) & 0xff,
361                        (media->info.driver_version << 8) & 0xff,
362                        (media->info.driver_version << 0) & 0xff);
363         }
364
365         if (media_opts.entity) {
366                 struct media_entity *entity;
367
368                 entity = media_get_entity_by_name(media, media_opts.entity,
369                                                   strlen(media_opts.entity));
370                 if (entity == NULL) {
371                         printf("Entity '%s' not found\n", media_opts.entity);
372                         goto out;
373                 }
374
375                 printf("%s\n", entity->devname);
376         }
377
378         if (media_opts.pad) {
379                 struct media_pad *pad;
380
381                 pad = media_parse_pad(media, media_opts.pad, NULL);
382                 if (pad == NULL) {
383                         printf("Pad '%s' not found\n", media_opts.pad);
384                         goto out;
385                 }
386
387                 v4l2_subdev_print_format(pad->entity, pad->index,
388                                          V4L2_SUBDEV_FORMAT_ACTIVE);
389         }
390
391         if (media_opts.print || media_opts.print_dot) {
392                 media_print_topology(media, media_opts.print_dot);
393                 printf("\n");
394         }
395
396         if (media_opts.reset) {
397                 if (media_opts.verbose)
398                         printf("Resetting all links to inactive\n");
399                 ret = media_reset_links(media);
400                 if (ret) {
401                         printf("Unable to reset links: %s (%d)\n",
402                                strerror(-ret), -ret);
403                         goto out;
404                 }
405         }
406
407         if (media_opts.links) {
408                 ret = media_parse_setup_links(media, media_opts.links);
409                 if (ret) {
410                         printf("Unable to parse link: %s (%d)\n",
411                                strerror(-ret), -ret);
412                         goto out;
413                 }
414         }
415
416         if (media_opts.formats) {
417                 ret = v4l2_subdev_parse_setup_formats(media,
418                                                       media_opts.formats);
419                 if (ret) {
420                         printf("Unable to parse format: %s (%d)\n",
421                                strerror(-ret), -ret);
422                         goto out;
423                 }
424         }
425
426         if (media_opts.interactive) {
427                 while (1) {
428                         char buffer[32];
429                         char *end;
430
431                         printf("Enter a link to modify or enter to stop\n");
432                         if (fgets(buffer, sizeof buffer, stdin) == NULL)
433                                 break;
434
435                         if (buffer[0] == '\n')
436                                 break;
437
438                         ret = media_parse_setup_link(media, buffer, &end);
439                         if (ret)
440                                 printf("Unable to parse link: %s (%d)\n",
441                                        strerror(-ret), -ret);
442                 }
443         }
444
445         ret = 0;
446
447 out:
448         if (media)
449                 media_close(media);
450
451         return ret ? EXIT_FAILURE : EXIT_SUCCESS;
452 }
453