_base_ = ['./mask2former_r50_8xb2-8e_youtubevis2021.py']
depths = [2, 2, 18, 2]
model = dict(
    type='Mask2FormerVideo',
    backbone=dict(
        _delete_=True,
        type='SwinTransformer',
        pretrain_img_size=384,
        embed_dims=192,
        depths=depths,
        num_heads=[6, 12, 24, 48],
        window_size=12,
        mlp_ratio=4,
        qkv_bias=True,
        qk_scale=None,
        drop_rate=0.,
        attn_drop_rate=0.,
        drop_path_rate=0.3,
        patch_norm=True,
        out_indices=(0, 1, 2, 3),
        with_cp=False,
        convert_weights=True,
        frozen_stages=-1,
        init_cfg=None),
    track_head=dict(
        type='Mask2FormerTrackHead',
        in_channels=[192, 384, 768, 1536],
        num_queries=200),
    init_cfg=dict(
        type='Pretrained',
        checkpoint=  # noqa: E251
        'https://download.openmmlab.com/mmdetection/v3.0/mask2former/'
        'mask2former_swin-l-p4-w12-384-in21k_16xb1-lsj-100e_coco-panoptic/'
        'mask2former_swin-l-p4-w12-384-in21k_16xb1-lsj-100e_coco-panoptic_'
        '20220407_104949-82f8d28d.pth'))

# set all layers in backbone to lr_mult=0.1
# set all norm layers, position_embeding,
# query_embeding, level_embeding to decay_multi=0.0
backbone_norm_multi = dict(lr_mult=0.1, decay_mult=0.0)
backbone_embed_multi = dict(lr_mult=0.1, decay_mult=0.0)
embed_multi = dict(lr_mult=1.0, decay_mult=0.0)
custom_keys = {
    'backbone': dict(lr_mult=0.1, decay_mult=1.0),
    'backbone.patch_embed.norm': backbone_norm_multi,
    'backbone.norm': backbone_norm_multi,
    'absolute_pos_embed': backbone_embed_multi,
    'relative_position_bias_table': backbone_embed_multi,
    'query_embed': embed_multi,
    'query_feat': embed_multi,
    'level_embed': embed_multi
}
custom_keys.update({
    f'backbone.stages.{stage_id}.blocks.{block_id}.norm': backbone_norm_multi
    for stage_id, num_blocks in enumerate(depths)
    for block_id in range(num_blocks)
})
custom_keys.update({
    f'backbone.stages.{stage_id}.downsample.norm': backbone_norm_multi
    for stage_id in range(len(depths) - 1)
})
# optimizer
optim_wrapper = dict(
    paramwise_cfg=dict(custom_keys=custom_keys, norm_decay_mult=0.0))