# TODO: Need to solve the problem of multiple backend_args parameters
# _backend_args = dict(
#     backend='petrel',
#     path_mapping=dict({
#         './data/': 's3://openmmlab/datasets/detection/',
#         'data/': 's3://openmmlab/datasets/detection/'
#     }))

_backend_args = None

tta_model = dict(
    type='mmdet.DetTTAModel',
    tta_cfg=dict(nms=dict(type='nms', iou_threshold=0.65), max_per_img=300))

img_scales = [(640, 640), (320, 320), (960, 960)]

#                                LoadImageFromFile
#              /                        |                          \
#          Resize                     Resize                       Resize  # noqa
#        /      \                    /      \                    /        \
#  RandomFlip RandomFlip      RandomFlip RandomFlip        RandomFlip RandomFlip # noqa
#      |          |                |         |                  |         |
#  LoadAnn    LoadAnn           LoadAnn    LoadAnn           LoadAnn    LoadAnn
#      |          |                |         |                  |         |
#  PackDetIn  PackDetIn         PackDetIn  PackDetIn        PackDetIn  PackDetIn # noqa

tta_pipeline = [
    dict(type='LoadImageFromFile', backend_args=_backend_args),
    dict(
        type='TestTimeAug',
        transforms=[
            [
                dict(type='mmdet.Resize', scale=s, keep_ratio=True)
                for s in img_scales
            ],
            [
                # ``RandomFlip`` must be placed before ``Pad``, otherwise
                # bounding box coordinates after flipping cannot be
                # recovered correctly.
                dict(type='mmdet.RandomFlip', prob=1.),
                dict(type='mmdet.RandomFlip', prob=0.)
            ],
            [
                dict(
                    type='mmdet.Pad',
                    pad_to_square=True,
                    pad_val=dict(img=(114.0, 114.0, 114.0))),
            ],
            [
                dict(
                    type='mmdet.PackDetInputs',
                    meta_keys=('img_id', 'img_path', 'ori_shape', 'img_shape',
                               'scale_factor', 'flip', 'flip_direction'))
            ]
        ])
]