Backlog/lib/sdl3/v2/camera.zig

const std = @import("std");
pub const c = @import("c.zig").c;

pub const PixelFormat = enum(c_int) {
    pixelformatUnknown,
    pixelformatIndex1lsb,
    pixelformatIndex1msb,
    pixelformatIndex2lsb,
    pixelformatIndex2msb,
    pixelformatIndex4lsb,
    pixelformatIndex4msb,
    pixelformatIndex8,
    pixelformatRgb332,
    pixelformatXrgb4444,
    pixelformatXbgr4444,
    pixelformatXrgb1555,
    pixelformatXbgr1555,
    pixelformatArgb4444,
    pixelformatRgba4444,
    pixelformatAbgr4444,
    pixelformatBgra4444,
    pixelformatArgb1555,
    pixelformatRgba5551,
    pixelformatAbgr1555,
    pixelformatBgra5551,
    pixelformatRgb565,
    pixelformatBgr565,
    pixelformatRgb24,
    pixelformatBgr24,
    pixelformatXrgb8888,
    pixelformatRgbx8888,
    pixelformatXbgr8888,
    pixelformatBgrx8888,
    pixelformatArgb8888,
    pixelformatRgba8888,
    pixelformatAbgr8888,
    pixelformatBgra8888,
    pixelformatXrgb2101010,
    pixelformatXbgr2101010,
    pixelformatArgb2101010,
    pixelformatAbgr2101010,
    pixelformatRgb48,
    pixelformatBgr48,
    pixelformatRgba64,
    pixelformatArgb64,
    pixelformatBgra64,
    pixelformatAbgr64,
    pixelformatRgb48Float,
    pixelformatBgr48Float,
    pixelformatRgba64Float,
    pixelformatArgb64Float,
    pixelformatBgra64Float,
    pixelformatAbgr64Float,
    pixelformatRgb96Float,
    pixelformatBgr96Float,
    pixelformatRgba128Float,
    pixelformatArgb128Float,
    pixelformatBgra128Float,
    pixelformatAbgr128Float,
    pixelformatRgba32,
    pixelformatArgb32,
    pixelformatBgra32,
    pixelformatAbgr32,
    pixelformatRgbx32,
    pixelformatXrgb32,
    pixelformatBgrx32,
    pixelformatXbgr32,
};

pub const Surface = opaque {};

pub const Colorspace = enum(c_int) {
    colorspaceUnknown,
};

pub const PropertiesID = u32;

pub const CameraID = u32;

pub const Camera = opaque {
    pub inline fn getCameraPermissionState(camera: *Camera) c_int {
        return c.SDL_GetCameraPermissionState(camera);
    }

    pub inline fn getCameraID(camera: *Camera) CameraID {
        return c.SDL_GetCameraID(camera);
    }

    pub inline fn getCameraProperties(camera: *Camera) PropertiesID {
        return c.SDL_GetCameraProperties(camera);
    }

    pub inline fn getCameraFormat(camera: *Camera, spec: ?*CameraSpec) bool {
        return c.SDL_GetCameraFormat(camera, spec);
    }

    pub inline fn acquireCameraFrame(camera: *Camera, timestampNS: *u64) ?*Surface {
        return c.SDL_AcquireCameraFrame(camera, @ptrCast(timestampNS));
    }

    pub inline fn releaseCameraFrame(camera: *Camera, frame: ?*Surface) void {
        return c.SDL_ReleaseCameraFrame(camera, frame);
    }

    pub inline fn closeCamera(camera: *Camera) void {
        return c.SDL_CloseCamera(camera);
    }
};

pub const CameraSpec = extern struct {
    format: PixelFormat, // Frame format
    colorspace: Colorspace, // Frame colorspace
    width: c_int, // Frame width
    height: c_int, // Frame height
    framerate_numerator: c_int, // Frame rate numerator ((num / denom) == FPS, (denom / num) == duration in seconds)
    framerate_denominator: c_int, // Frame rate demoninator ((num / denom) == FPS, (denom / num) == duration in seconds)
};

pub const CameraPosition = enum(c_int) {
    cameraPositionUnknown,
    cameraPositionFrontFacing,
    cameraPositionBackFacing,
};

pub inline fn getNumCameraDrivers() c_int {
    return c.SDL_GetNumCameraDrivers();
}

pub inline fn getCameraDriver(index: c_int) [*c]const u8 {
    return c.SDL_GetCameraDriver(index);
}

pub inline fn getCurrentCameraDriver() [*c]const u8 {
    return c.SDL_GetCurrentCameraDriver();
}

pub inline fn getCameras(count: *c_int) ?*CameraID {
    return c.SDL_GetCameras(@ptrCast(count));
}

pub inline fn getCameraSupportedFormats(instance_id: CameraID, count: *c_int) [*c][*c]CameraSpec {
    return c.SDL_GetCameraSupportedFormats(instance_id, @ptrCast(count));
}

pub inline fn getCameraName(instance_id: CameraID) [*c]const u8 {
    return c.SDL_GetCameraName(instance_id);
}

pub inline fn getCameraPosition(instance_id: CameraID) CameraPosition {
    return c.SDL_GetCameraPosition(instance_id);
}

pub inline fn openCamera(instance_id: CameraID, spec: *const CameraSpec) ?*Camera {
    return c.SDL_OpenCamera(instance_id, @ptrCast(spec));
}