media-ctl: subdev: add Y8 format.
[media-ctl.git] / media.c
diff --git a/media.c b/media.c
index 59a3a58..d5d98de 100644 (file)
--- a/media.c
+++ b/media.c
 #include "subdev.h"
 #include "tools.h"
 
+static unsigned int media_entity_type(struct media_entity *entity)
+{
+       return entity->info.type & MEDIA_ENTITY_TYPE_MASK;
+}
+
 static const char *media_entity_type_to_string(unsigned type)
 {
        static const struct {
@@ -47,6 +52,8 @@ static const char *media_entity_type_to_string(unsigned type)
 
        unsigned int i;
 
+       type &= MEDIA_ENTITY_TYPE_MASK;
+
        for (i = 0; i < ARRAY_SIZE(types); i++) {
                if (types[i].type == type)
                        return types[i].name;
@@ -55,7 +62,7 @@ static const char *media_entity_type_to_string(unsigned type)
        return "Unknown";
 }
 
-static const char *media_entity_subtype_to_string(unsigned type, unsigned subtype)
+static const char *media_entity_subtype_to_string(unsigned type)
 {
        static const char *node_types[] = {
                "Unknown",
@@ -66,19 +73,21 @@ static const char *media_entity_subtype_to_string(unsigned type, unsigned subtyp
        };
        static const char *subdev_types[] = {
                "Unknown",
-               "Video Decoder",
-               "Video Encoder",
-               "Miscellaneous",
+               "Sensor",
+               "Flash",
+               "Lens",
        };
 
-       switch (type) {
+       unsigned int subtype = type & MEDIA_ENTITY_SUBTYPE_MASK;
+
+       switch (type & MEDIA_ENTITY_TYPE_MASK) {
        case MEDIA_ENTITY_TYPE_NODE:
-               if (subtype > 4)
+               if (subtype >= ARRAY_SIZE(node_types))
                        subtype = 0;
                return node_types[subtype];
 
        case MEDIA_ENTITY_TYPE_SUBDEV:
-               if (subtype > 3)
+               if (subtype >= ARRAY_SIZE(subdev_types))
                        subtype = 0;
                return subdev_types[subtype];
        default:
@@ -86,21 +95,21 @@ static const char *media_entity_subtype_to_string(unsigned type, unsigned subtyp
        }
 }
 
-static const char *media_pad_type_to_string(unsigned type)
+static const char *media_pad_type_to_string(unsigned flag)
 {
        static const struct {
-               __u32 type;
+               __u32 flag;
                const char *name;
-       } types[] = {
-               { MEDIA_PAD_TYPE_INPUT, "Input" },
-               { MEDIA_PAD_TYPE_OUTPUT, "Output" },
+       } flags[] = {
+               { MEDIA_PAD_FLAG_INPUT, "Input" },
+               { MEDIA_PAD_FLAG_OUTPUT, "Output" },
        };
 
        unsigned int i;
 
-       for (i = 0; i < ARRAY_SIZE(types); i++) {
-               if (types[i].type == type)
-                       return types[i].name;
+       for (i = 0; i < ARRAY_SIZE(flags); i++) {
+               if (flags[i].flag & flag)
+                       return flags[i].name;
        }
 
        return "Unknown";
@@ -130,7 +139,7 @@ struct media_entity_pad *media_entity_remote_pad(struct media_entity_pad *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)
@@ -147,6 +156,24 @@ struct media_entity *media_get_entity_by_name(struct media_device *media,
        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 -
  */
@@ -156,7 +183,7 @@ int media_setup_link(struct media_device *media,
                     __u32 flags)
 {
        struct media_entity_link *link;
-       struct media_user_link ulink;
+       struct media_link_desc ulink;
        unsigned int i;
        int ret;
 
@@ -178,12 +205,12 @@ int media_setup_link(struct media_device *media,
        /* source pad */
        ulink.source.entity = source->entity->info.id;
        ulink.source.index = source->index;
-       ulink.source.type = MEDIA_PAD_TYPE_OUTPUT;
+       ulink.source.flags = MEDIA_PAD_FLAG_OUTPUT;
 
        /* sink pad */
        ulink.sink.entity = sink->entity->info.id;
        ulink.sink.index = sink->index;
-       ulink.sink.type = MEDIA_PAD_TYPE_INPUT;
+       ulink.sink.flags = MEDIA_PAD_FLAG_INPUT;
 
        ulink.flags = flags | (link->flags & MEDIA_LINK_FLAG_IMMUTABLE);
 
@@ -233,28 +260,31 @@ static void media_print_topology_dot(struct media_device *media)
                struct media_entity *entity = &media->entities[i];
                unsigned int npads;
 
-               switch (entity->info.type) {
+               switch (media_entity_type(entity)) {
                case MEDIA_ENTITY_TYPE_NODE:
-                       printf("\tn%08x [label=\"%s\", shape=box, style=filled, "
+                       printf("\tn%08x [label=\"%s\\n%s\", shape=box, style=filled, "
                               "fillcolor=yellow]\n",
-                              entity->info.id, entity->info.name);
+                              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)
+                               if (!(entity->pads[j].flags & MEDIA_PAD_FLAG_INPUT))
                                        continue;
 
                                printf("%s<port%u> %u", npads ? " | " : "", j, j);
                                npads++;
                        }
 
-                       printf("} | %s | {", entity->info.name);
+                       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)
+                               if (!(entity->pads[j].flags & MEDIA_PAD_FLAG_OUTPUT))
                                        continue;
 
                                printf("%s<port%u> %u", npads ? " | " : "", j, j);
@@ -275,11 +305,11 @@ static void media_print_topology_dot(struct media_device *media)
                                continue;
 
                        printf("\tn%08x", link->source->entity->info.id);
-                       if (link->source->entity->info.type == MEDIA_ENTITY_TYPE_SUBDEV)
+                       if (media_entity_type(link->source->entity) == 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)
+                       if (media_entity_type(link->sink->entity) == MEDIA_ENTITY_TYPE_SUBDEV)
                                printf(":port%u", link->sink->index);
 
                        if (link->flags & MEDIA_LINK_FLAG_IMMUTABLE)
@@ -297,7 +327,6 @@ static void media_print_topology_text(struct media_device *media)
 {
        unsigned int i, j, k;
        unsigned int padding;
-       int ret;
 
        printf("Device topology\n");
 
@@ -310,23 +339,17 @@ static void media_print_topology_text(struct media_device *media)
                        entity->info.links, entity->info.links > 1 ? "s" : "");
                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)
+                       media_entity_subtype_to_string(entity->info.type));
+               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];
-                       struct v4l2_mbus_framefmt format;
 
-                       printf("\tpad%u: %s", j, media_pad_type_to_string(pad->type));
+                       printf("\tpad%u: %s ", j, media_pad_type_to_string(pad->flags));
 
-                       if (entity->info.type == MEDIA_ENTITY_TYPE_SUBDEV) {
-                               ret = v4l2_subdev_get_format(entity, &format, j,
-                                                    V4L2_SUBDEV_FORMAT_ACTIVE);
-                               if (ret == 0)
-                                       printf(" [%s %ux%u]", pixelcode_to_string(format.code),
-                                              format.width, format.height);
-                       }
+                       if (media_entity_type(entity) == MEDIA_ENTITY_TYPE_SUBDEV)
+                               v4l2_subdev_print_format(entity, j, V4L2_SUBDEV_FORMAT_ACTIVE);
 
                        printf("\n");
 
@@ -367,12 +390,12 @@ static int media_enum_links(struct media_device *media)
 
        for (id = 1; id <= media->entities_count; id++) {
                struct media_entity *entity = &media->entities[id - 1];
-               struct media_user_links links;
+               struct media_links_enum links;
                unsigned int i;
 
                links.entity = entity->info.id;
-               links.pads = malloc(entity->info.pads * sizeof(struct media_user_pad));
-               links.links = malloc(entity->info.links * sizeof(struct media_user_link));
+               links.pads = malloc(entity->info.pads * sizeof(struct media_pad_desc));
+               links.links = malloc(entity->info.links * sizeof(struct media_link_desc));
 
                if (ioctl(media->fd, MEDIA_IOC_ENUM_LINKS, &links) < 0) {
                        printf("%s: Unable to enumerate pads and links (%s).\n",
@@ -384,28 +407,28 @@ static int media_enum_links(struct media_device *media)
 
                for (i = 0; i < entity->info.pads; ++i) {
                        entity->pads[i].entity = entity;
-                       entity->pads[i].type = links.pads[i].type;
                        entity->pads[i].index = links.pads[i].index;
+                       entity->pads[i].flags = links.pads[i].flags;
                }
 
                for (i = 0; i < entity->info.links; ++i) {
-                       struct media_user_link *link = &links.links[i];
+                       struct media_link_desc *link = &links.links[i];
                        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;
+                       } else {
+                               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;
                        }
-
-                       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;
                }
 
                free(links.pads);
@@ -419,18 +442,22 @@ static int media_enum_entities(struct media_device *media)
 {
        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) {
@@ -447,27 +474,33 @@ static int media_enum_entities(struct media_device *media)
                media->entities_count++;
 
                /* Find the corresponding device name. */
-               if ((entity->info.type != MEDIA_ENTITY_TYPE_NODE ||
-                    entity->info.type != MEDIA_NODE_TYPE_V4L) &&
-                   (entity->info.type != MEDIA_ENTITY_TYPE_SUBDEV))
+               if (media_entity_type(entity) != MEDIA_ENTITY_TYPE_NODE &&
+                   media_entity_type(entity) != 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;