#include <linux/media.h>
#include "media.h"
+#include "subdev.h"
#include "tools.h"
static const char *media_entity_type_to_string(unsigned type)
}
}
+static const char *media_pad_type_to_string(unsigned type)
+{
+ static const struct {
+ __u32 type;
+ const char *name;
+ } types[] = {
+ { MEDIA_PAD_TYPE_INPUT, "Input" },
+ { MEDIA_PAD_TYPE_OUTPUT, "Output" },
+ };
+
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(types); i++) {
+ if (types[i].type == type)
+ return types[i].name;
+ }
+
+ return "Unknown";
+}
+
/*
* media_entity_remote_pad -
*/
}
/*
- * media_entity_by_name -
+ * media_get_entity_by_name -
*/
struct media_entity *media_get_entity_by_name(struct media_device *media,
const char *name, size_t length)
return NULL;
}
+/*
+ * media_get_entity_by_id -
+ */
+struct media_entity *media_get_entity_by_id(struct media_device *media,
+ __u32 id)
+{
+ unsigned int i;
+
+ for (i = 0; i < media->entities_count; ++i) {
+ struct media_entity *entity = &media->entities[i];
+
+ if (entity->info.id == id)
+ return entity;
+ }
+
+ return NULL;
+}
+
/*
* media_setup_link -
*/
return 0;
}
-void media_print_topology(struct media_device *media)
+static void media_print_topology_dot(struct media_device *media)
+{
+ unsigned int i, j;
+
+ printf("digraph board {\n");
+ printf("\trankdir=TB\n");
+
+ for (i = 0; i < media->entities_count; ++i) {
+ struct media_entity *entity = &media->entities[i];
+ unsigned int npads;
+
+ switch (entity->info.type) {
+ case MEDIA_ENTITY_TYPE_NODE:
+ printf("\tn%08x [label=\"%s\\n%s\", shape=box, style=filled, "
+ "fillcolor=yellow]\n",
+ entity->info.id, entity->info.name, entity->devname);
+ break;
+
+ case MEDIA_ENTITY_TYPE_SUBDEV:
+ printf("\tn%08x [label=\"{{", entity->info.id);
+
+ for (j = 0, npads = 0; j < entity->info.pads; ++j) {
+ if (entity->pads[j].type != MEDIA_PAD_TYPE_INPUT)
+ continue;
+
+ printf("%s<port%u> %u", npads ? " | " : "", j, j);
+ npads++;
+ }
+
+ printf("} | %s", entity->info.name);
+ if (entity->devname)
+ printf("\\n%s", entity->devname);
+ printf(" | {");
+
+ for (j = 0, npads = 0; j < entity->info.pads; ++j) {
+ if (entity->pads[j].type != MEDIA_PAD_TYPE_OUTPUT)
+ continue;
+
+ printf("%s<port%u> %u", npads ? " | " : "", j, j);
+ npads++;
+ }
+
+ printf("}}\", shape=Mrecord, style=filled, fillcolor=green]\n");
+ break;
+
+ default:
+ continue;
+ }
+
+ for (j = 0; j < entity->info.links; j++) {
+ struct media_entity_link *link = &entity->links[j];
+
+ if (link->source->entity != entity)
+ continue;
+
+ printf("\tn%08x", link->source->entity->info.id);
+ if (link->source->entity->info.type == MEDIA_ENTITY_TYPE_SUBDEV)
+ printf(":port%u", link->source->index);
+ printf(" -> ");
+ printf("n%08x", link->sink->entity->info.id);
+ if (link->sink->entity->info.type == MEDIA_ENTITY_TYPE_SUBDEV)
+ printf(":port%u", link->sink->index);
+
+ if (link->flags & MEDIA_LINK_FLAG_IMMUTABLE)
+ printf(" [style=bold]");
+ else if (!(link->flags & MEDIA_LINK_FLAG_ACTIVE))
+ printf(" [style=dashed]");
+ printf("\n");
+ }
+ }
+
+ printf("}\n");
+}
+
+static void media_print_topology_text(struct media_device *media)
{
unsigned int i, j, k;
unsigned int padding;
printf("%*ctype %s subtype %s\n", padding, ' ',
media_entity_type_to_string(entity->info.type),
media_entity_subtype_to_string(entity->info.type, entity->info.subtype));
- if (entity->devname)
+ if (entity->devname[0])
printf("%*cdevice node name %s\n", padding, ' ', entity->devname);
for (j = 0; j < entity->info.pads; j++) {
+ struct media_entity_pad *pad = &entity->pads[j];
+
+ printf("\tpad%u: %s ", j, media_pad_type_to_string(pad->type));
+
+ if (entity->info.type == MEDIA_ENTITY_TYPE_SUBDEV)
+ v4l2_subdev_print_format(entity, j, V4L2_SUBDEV_FORMAT_ACTIVE);
+
+ printf("\n");
+
for (k = 0; k < entity->info.links; k++) {
struct media_entity_link *link = &entity->links[k];
link->source->index != j)
continue;
- printf("\tpad%u -> '%s':pad%u [", link->source->index,
+ printf("\t\t-> '%s':pad%u [",
link->sink->entity->info.name, link->sink->index);
if (link->flags & MEDIA_LINK_FLAG_IMMUTABLE)
}
}
+void media_print_topology(struct media_device *media, int dot)
+{
+ if (dot)
+ media_print_topology_dot(media);
+ else
+ media_print_topology_text(media);
+}
+
static int media_enum_links(struct media_device *media)
{
__u32 id;
struct media_entity *source;
struct media_entity *sink;
- if (link->source.entity > media->entities_count ||
- link->sink.entity > media->entities_count) {
+ source = media_get_entity_by_id(media, link->source.entity);
+ sink = media_get_entity_by_id(media, link->sink.entity);
+
+ if (source == NULL || sink == NULL) {
printf("WARNING entity %u link %u from %u/%u to %u/%u is invalid!\n",
id, i, link->source.entity, link->source.index,
link->sink.entity, link->sink.index);
ret = -EINVAL;
}
- source = &media->entities[link->source.entity - 1];
- sink = &media->entities[link->sink.entity - 1];
entity->links[i].source = &source->pads[link->source.index];
entity->links[i].sink = &sink->pads[link->sink.index];
entity->links[i].flags = links.links[i].flags;
{
struct media_entity *entity;
struct stat devstat;
+ unsigned int size;
char devname[32];
- unsigned int i;
+ char sysname[32];
+ char target[1024];
+ char *p;
__u32 id;
int ret;
- for (id = 1; ; id++) {
- media->entities =
- realloc(media->entities, id * sizeof(*media->entities));
- entity = &media->entities[id - 1];
+ for (id = 0; ; id = entity->info.id) {
+ size = (media->entities_count + 1) * sizeof(*media->entities);
+ media->entities = realloc(media->entities, size);
+
+ entity = &media->entities[media->entities_count];
memset(entity, 0, sizeof(*entity));
entity->fd = -1;
- entity->info.id = id;
+ entity->info.id = id | MEDIA_ENTITY_ID_FLAG_NEXT;
ret = ioctl(media->fd, MEDIA_IOC_ENUM_ENTITIES, &entity->info);
if (ret < 0) {
(entity->info.type != MEDIA_ENTITY_TYPE_SUBDEV))
continue;
- for (i = 0; i < 256; ++i) {
- if (entity->info.type == MEDIA_ENTITY_TYPE_NODE)
- sprintf(devname, "/dev/video%u", i);
- else
- sprintf(devname, "/dev/subdev%u", i);
+ sprintf(sysname, "/sys/dev/char/%u:%u", entity->info.v4l.major,
+ entity->info.v4l.minor);
+ ret = readlink(sysname, target, sizeof(target));
+ if (ret < 0)
+ continue;
- ret = stat(devname, &devstat);
- if (ret < 0)
- continue;
+ target[ret] = '\0';
+ p = strrchr(target, '/');
+ if (p == NULL)
+ continue;
- if (major(devstat.st_rdev) == entity->info.v4l.major &&
- minor(devstat.st_rdev) == entity->info.v4l.minor) {
- strcpy(entity->devname, devname);
- break;
- }
- }
+ sprintf(devname, "/dev/%s", p + 1);
+ ret = stat(devname, &devstat);
+ if (ret < 0)
+ continue;
+
+ /* Sanity check: udev might have reordered the device nodes.
+ * Make sure the major/minor match. We should really use
+ * libudev.
+ */
+ if (major(devstat.st_rdev) == entity->info.v4l.major &&
+ minor(devstat.st_rdev) == entity->info.v4l.minor)
+ strcpy(entity->devname, devname);
}
return 0;
ret = media_enum_entities(media);
if (ret < 0) {
printf("%s: Unable to enumerate entities for device %s (%s)\n",
- __func__, name, strerror(ret));
+ __func__, name, strerror(-ret));
media_close(media);
return NULL;
}
projects / media-ctl.git / blobdiff