Add v4l2_subdev_open() and v4l2_subdev_close() to subdev.h
[media-ctl.git] / main.c
diff --git a/main.c b/main.c
index 96b7ca1..4bc0d39 100644 (file)
--- a/main.c
+++ b/main.c
 #include "media.h"
 #include "options.h"
 #include "subdev.h"
+#include "tools.h"
+
+/* -----------------------------------------------------------------------------
+ * Printing
+ */
+
+static struct {
+       const char *name;
+       enum v4l2_mbus_pixelcode code;
+} mbus_formats[] = {
+       { "Y8", V4L2_MBUS_FMT_Y8_1X8},
+       { "YUYV", V4L2_MBUS_FMT_YUYV8_1X16 },
+       { "UYVY", V4L2_MBUS_FMT_UYVY8_1X16 },
+       { "SGRBG10", V4L2_MBUS_FMT_SGRBG10_1X10 },
+       { "SGRBG10_DPCM8", V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8 },
+};
+
+static const char *pixelcode_to_string(enum v4l2_mbus_pixelcode code)
+{
+       unsigned int i;
+
+       for (i = 0; i < ARRAY_SIZE(mbus_formats); ++i) {
+               if (mbus_formats[i].code == code)
+                       return mbus_formats[i].name;
+       }
+
+       return "unknown";
+}
+
+static enum v4l2_mbus_pixelcode string_to_pixelcode(const char *string,
+                                            unsigned int length)
+{
+       unsigned int i;
+
+       for (i = 0; i < ARRAY_SIZE(mbus_formats); ++i) {
+               if (strncmp(mbus_formats[i].name, string, length) == 0)
+                       break;
+       }
+
+       if (i == ARRAY_SIZE(mbus_formats))
+               return (enum v4l2_mbus_pixelcode)-1;
+
+       return mbus_formats[i].code;
+}
+
+static void v4l2_subdev_print_format(struct media_entity *entity,
+       unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+       struct v4l2_mbus_framefmt format;
+       struct v4l2_rect rect;
+       int ret;
+
+       ret = v4l2_subdev_get_format(entity, &format, pad, which);
+       if (ret != 0)
+               return;
+
+       printf("[%s %ux%u", pixelcode_to_string(format.code),
+              format.width, format.height);
+
+       ret = v4l2_subdev_get_crop(entity, &rect, pad, which);
+       if (ret == 0)
+               printf(" (%u,%u)/%ux%u", rect.left, rect.top,
+                      rect.width, rect.height);
+       printf("]");
+}
+
+static const char *media_entity_type_to_string(unsigned type)
+{
+       static const struct {
+               __u32 type;
+               const char *name;
+       } types[] = {
+               { MEDIA_ENTITY_TYPE_NODE, "Node" },
+               { MEDIA_ENTITY_TYPE_SUBDEV, "V4L2 subdev" },
+       };
+
+       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;
+       }
+
+       return "Unknown";
+}
+
+static const char *media_entity_subtype_to_string(unsigned type)
+{
+       static const char *node_types[] = {
+               "Unknown",
+               "V4L",
+               "FB",
+               "ALSA",
+               "DVB",
+       };
+       static const char *subdev_types[] = {
+               "Unknown",
+               "Sensor",
+               "Flash",
+               "Lens",
+       };
+
+       unsigned int subtype = type & MEDIA_ENTITY_SUBTYPE_MASK;
+
+       switch (type & MEDIA_ENTITY_TYPE_MASK) {
+       case MEDIA_ENTITY_TYPE_NODE:
+               if (subtype >= ARRAY_SIZE(node_types))
+                       subtype = 0;
+               return node_types[subtype];
+
+       case MEDIA_ENTITY_TYPE_SUBDEV:
+               if (subtype >= ARRAY_SIZE(subdev_types))
+                       subtype = 0;
+               return subdev_types[subtype];
+       default:
+               return node_types[0];
+       }
+}
+
+static const char *media_pad_type_to_string(unsigned flag)
+{
+       static const struct {
+               __u32 flag;
+               const char *name;
+       } flags[] = {
+               { MEDIA_PAD_FLAG_INPUT, "Input" },
+               { MEDIA_PAD_FLAG_OUTPUT, "Output" },
+       };
+
+       unsigned int i;
+
+       for (i = 0; i < ARRAY_SIZE(flags); i++) {
+               if (flags[i].flag & flag)
+                       return flags[i].name;
+       }
+
+       return "Unknown";
+}
+
+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 (media_entity_type(entity)) {
+               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].flags & MEDIA_PAD_FLAG_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].flags & MEDIA_PAD_FLAG_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->num_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 (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 (media_entity_type(link->sink->entity) == 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("Device topology\n");
+
+       for (i = 0; i < media->entities_count; ++i) {
+               struct media_entity *entity = &media->entities[i];
+
+               padding = printf("- entity %u: ", entity->info.id);
+               printf("%s (%u pad%s, %u link%s)\n", entity->info.name,
+                       entity->info.pads, entity->info.pads > 1 ? "s" : "",
+                       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));
+               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->flags));
+
+                       if (media_entity_type(entity) == MEDIA_ENTITY_TYPE_SUBDEV)
+                               v4l2_subdev_print_format(entity, j, V4L2_SUBDEV_FORMAT_ACTIVE);
+
+                       printf("\n");
+
+                       for (k = 0; k < entity->num_links; k++) {
+                               struct media_entity_link *link = &entity->links[k];
+
+                               if (link->source->entity != entity ||
+                                   link->source->index != j)
+                                       continue;
+
+                               printf("\t\t-> '%s':pad%u [",
+                                       link->sink->entity->info.name, link->sink->index);
+
+                               if (link->flags & MEDIA_LINK_FLAG_IMMUTABLE)
+                                       printf("IMMUTABLE,");
+                               if (link->flags & MEDIA_LINK_FLAG_ACTIVE)
+                                       printf("ACTIVE");
+
+                               printf("]\n");
+                       }
+               }
+               printf("\n");
+       }
+}
+
+void media_print_topology(struct media_device *media, int dot)
+{
+       if (dot)
+               media_print_topology_dot(media);
+       else
+               media_print_topology_text(media);
+}
 
 /* -----------------------------------------------------------------------------
  * Links setup
@@ -61,13 +335,14 @@ static struct media_entity_pad *parse_pad(struct media_device *media, const char
                if (entity == NULL)
                        return NULL;
 
-               for (++end; isspace(*end); ++end);
+               ++end;
        } else {
                entity_id = strtoul(p, &end, 10);
                entity = media_get_entity_by_id(media, entity_id);
                if (entity == NULL)
                        return NULL;
        }
+       for (; isspace(*end); ++end);
 
        if (*end != ':')
                return NULL;
@@ -80,7 +355,8 @@ static struct media_entity_pad *parse_pad(struct media_device *media, const char
                return NULL;
 
        for (p = end; isspace(*p); ++p);
-       *endp = (char *)p;
+       if (endp)
+               *endp = (char *)p;
 
        return &entity->pads[pad];
 }
@@ -107,7 +383,7 @@ static struct media_entity_link *parse_link(struct media_device *media, const ch
 
        *endp = end;
 
-       for (i = 0; i < source->entity->info.links; i++) {
+       for (i = 0; i < source->entity->num_links; i++) {
                link = &source->entity->links[i];
 
                if (link->source == source && link->sink == sink)
@@ -207,7 +483,8 @@ static int parse_crop(struct v4l2_rect *crop, const char *p, char **endp)
 {
        char *end;
 
-       for (; isspace(*p); ++p);
+       if (*p++ != '(')
+               return -EINVAL;
 
        crop->left = strtoul(p, &end, 10);
        if (*end != ',')
@@ -215,6 +492,8 @@ static int parse_crop(struct v4l2_rect *crop, const char *p, char **endp)
 
        p = end + 1;
        crop->top = strtoul(p, &end, 10);
+       if (*end++ != ')')
+               return -EINVAL;
        if (*end != '/')
                return -EINVAL;
 
@@ -267,12 +546,17 @@ static struct media_entity_pad *parse_pad_format(struct media_device *media,
        if (*p++ != '[')
                return NULL;
 
-       ret = parse_format(format, p, &end);
-       if (ret < 0)
-               return NULL;
+       for (; isspace(*p); ++p);
 
-       for (p = end; isspace(*p); p++);
-       if (isdigit(*p)) {
+       if (isalnum(*p)) {
+               ret = parse_format(format, p, &end);
+               if (ret < 0)
+                       return NULL;
+
+               for (p = end; isspace(*p); p++);
+       }
+
+       if (*p == '(') {
                ret = parse_crop(crop, p, &end);
                if (ret < 0)
                        return NULL;
@@ -299,6 +583,9 @@ static int set_format(struct media_entity_pad *pad, struct v4l2_mbus_framefmt *f
 {
        int ret;
 
+       if (format->width == 0 || format->height == 0)
+               return 0;
+
        printf("Setting up format %s %ux%u on pad %s/%u\n",
                pixelcode_to_string(format->code), format->width, format->height,
                pad->entity->info.name, pad->index);
@@ -320,18 +607,21 @@ static int set_crop(struct media_entity_pad *pad, struct v4l2_rect *crop)
 {
        int ret;
 
-       printf("Setting up crop rectangle %u,%u/%ux%u on pad %s/%u\n",
+       if (crop->left == -1 || crop->top == -1)
+               return 0;
+
+       printf("Setting up crop rectangle (%u,%u)/%ux%u on pad %s/%u\n",
                crop->left, crop->top, crop->width, crop->height,
                pad->entity->info.name, pad->index);
 
        ret = v4l2_subdev_set_crop(pad->entity, crop, pad->index,
                                   V4L2_SUBDEV_FORMAT_ACTIVE);
        if (ret < 0) {
-               printf("Unable to set crop rectangle: %s (%d)", strerror(-ret), ret);
+               printf("Unable to set crop rectangle: %s (%d)\n", strerror(-ret), ret);
                return ret;
        }
 
-       printf("Crop rectangle set: %u,%u/%ux%u\n",
+       printf("Crop rectangle set: (%u,%u)/%ux%u\n",
                crop->left, crop->top, crop->width, crop->height);
 
        return 0;
@@ -341,6 +631,9 @@ static int set_frame_interval(struct media_entity *entity, struct v4l2_fract *in
 {
        int ret;
 
+       if (interval->numerator == 0)
+               return 0;
+
        printf("Setting up frame interval %u/%u on entity %s\n",
                interval->numerator, interval->denominator, entity->info.name);
 
@@ -359,7 +652,7 @@ static int set_frame_interval(struct media_entity *entity, struct v4l2_fract *in
 
 static int setup_format(struct media_device *media, const char *p, char **endp)
 {
-       struct v4l2_mbus_framefmt format;
+       struct v4l2_mbus_framefmt format = { 0, 0, 0 };
        struct media_entity_pad *pad;
        struct v4l2_rect crop = { -1, -1, -1, -1 };
        struct v4l2_fract interval = { 0, 0 };
@@ -373,33 +666,32 @@ static int setup_format(struct media_device *media, const char *p, char **endp)
                return -EINVAL;
        }
 
+       if (pad->flags & MEDIA_PAD_FLAG_OUTPUT) {
+               ret = set_crop(pad, &crop);
+               if (ret < 0)
+                       return ret;
+       }
+
        ret = set_format(pad, &format);
-       if (ret < 0) {
-               printf("Unable to set format\n");
+       if (ret < 0)
                return ret;
-       }
 
-       if (crop.left != -1 && crop.top != -1) {
+       if (pad->flags & MEDIA_PAD_FLAG_INPUT) {
                ret = set_crop(pad, &crop);
-               if (ret < 0) {
-                       printf("Unable to set crop rectangle\n");
+               if (ret < 0)
                        return ret;
-               }
        }
 
-       if (interval.numerator != 0) {
-               ret = set_frame_interval(pad->entity, &interval);
-               if (ret < 0) {
-                       printf("Unable to set frame interval\n");
-                       return ret;
-               }
-       }
+       ret = set_frame_interval(pad->entity, &interval);
+       if (ret < 0)
+               return ret;
+
 
        /* If the pad is an output pad, automatically set the same format on
         * the remote subdev input pads, if any.
         */
-       if (pad->type == MEDIA_PAD_TYPE_OUTPUT) {
-               for (i = 0; i < pad->entity->info.links; ++i) {
+       if (pad->flags & MEDIA_PAD_FLAG_OUTPUT) {
+               for (i = 0; i < pad->entity->num_links; ++i) {
                        struct media_entity_link *link = &pad->entity->links[i];
                        struct v4l2_mbus_framefmt remote_format;
 
@@ -437,6 +729,7 @@ static int setup_formats(struct media_device *media, const char *p)
 int main(int argc, char **argv)
 {
        struct media_device *media;
+       int ret = -1;
 
        if (parse_cmdline(argc, argv))
                return EXIT_FAILURE;
@@ -451,10 +744,26 @@ int main(int argc, char **argv)
 
                entity = media_get_entity_by_name(media, media_opts.entity,
                                                  strlen(media_opts.entity));
-               if (entity != NULL)
-                       printf("%s\n", entity->devname);
-               else
+               if (entity == NULL) {
                        printf("Entity '%s' not found\n", media_opts.entity);
+                       goto out;
+               }
+
+               printf("%s\n", entity->devname);
+       }
+
+       if (media_opts.pad) {
+               struct media_entity_pad *pad;
+
+               pad = parse_pad(media, media_opts.pad, NULL);
+               if (pad == NULL) {
+                       printf("Pad '%s' not found\n", media_opts.pad);
+                       goto out;
+               }
+
+               v4l2_subdev_print_format(pad->entity, pad->index,
+                                        V4L2_SUBDEV_FORMAT_ACTIVE);
+               printf("\n");
        }
 
        if (media_opts.print || media_opts.print_dot) {
@@ -489,10 +798,12 @@ int main(int argc, char **argv)
                }
        }
 
+       ret = 0;
+
 out:
        if (media)
                media_close(media);
 
-       exit(EXIT_SUCCESS);
+       return ret ? EXIT_FAILURE : EXIT_SUCCESS;
 }