megapixels/tools/list_devices.c

#include "device.h"
#include <linux/media.h>
#include <stdio.h>

int main(int argc, char *argv[]) {
    MPDeviceList *list = mp_device_list_new();

    while (list) {
        MPDevice *device = mp_device_list_get(list);

        const struct media_device_info *info = mp_device_get_info(device);
        printf("%s (%s) %s\n", info->model, info->driver, info->serial);
        printf("  Bus Info: %s\n", info->bus_info);
        printf("  Media Version: %d\n", info->media_version);
        printf("  HW Revision: %d\n", info->hw_revision);
        printf("  Driver Version: %d\n", info->driver_version);


        const struct media_v2_entity *entities = mp_device_get_entities(device);
        size_t num = mp_device_get_num_entities(device);
        printf("  Entities (%ld):\n", num);
        for (int i = 0; i < num; ++i) {
            printf("    %d %s (%d)\n", entities[i].id, entities[i].name, entities[i].function);
        }

        const struct media_v2_interface *interfaces = mp_device_get_interfaces(device);
        num = mp_device_get_num_interfaces(device);
        printf("  Interfaces (%ld):\n", num);
        for (int i = 0; i < num; ++i) {
            printf("    %d (%d - %d) devnode %d:%d\n", interfaces[i].id, interfaces[i].intf_type, interfaces[i].flags, interfaces[i].devnode.major, interfaces[i].devnode.minor);
        }

        const struct media_v2_pad *pads = mp_device_get_pads(device);
        num = mp_device_get_num_pads(device);
        printf("  Pads (%ld):\n", num);
        for (int i = 0; i < num; ++i) {
            printf("    %d for device:%d (%d)\n", pads[i].id, pads[i].entity_id, pads[i].flags);
        }

        const struct media_v2_link *links = mp_device_get_links(device);
        num = mp_device_get_num_links(device);
        printf("  Links (%ld):\n", num);
        for (int i = 0; i < num; ++i) {
            printf("    %d from:%d to:%d (%d)\n", links[i].id, links[i].source_id, links[i].sink_id, links[i].flags);
        }

        list = mp_device_list_next(list);
    }

    mp_device_list_free(list);
}