a
    |Ågè  ã                   @   sd   d Z ddlZddlZddlZddlZddlZdd„ Zddd„Zdd	„ Z	d
d„ Z
dd„ Zddd„ZdS )zUtils for monoDepth.
é    Nc                 C   s2  t | dƒ}d}d}d}d}d}| ¡  ¡ }| d¡dkrBd}n | d¡dkrVd}ntd|  ƒ‚t d	| ¡  d¡¡}|r”ttt	| 
¡ ƒƒ\}}ntd
ƒ‚t| ¡  d¡ ¡ ƒ}|dk rÆd}| }nd}t ||d ¡}	|rè||dfn||f}
t |	|
¡}	t |	¡}	|	|fW  d  ƒ S 1 s$0    Y  dS )zjRead pfm file.

    Args:
        path (str): path to file

    Returns:
        tuple: (data, scale)
    ÚrbNÚasciiZPFTZPfFzNot a PFM file: z^(\d+)\s(\d+)\s$zMalformed PFM header.r   ú<ú>Úfé   )ÚopenÚreadlineÚrstripÚdecodeÚ	ExceptionÚreÚmatchÚlistÚmapÚintÚgroupsÚfloatÚnpÚfromfileÚreshapeÚflipud)ÚpathÚfileÚcolorÚwidthÚheightÚscaleÚendianÚheaderZ	dim_matchÚdataÚshape© r"   úEC:\Games\Steam\steamapps\common\wallpaper_engine\dlc\pymidas\utils.pyÚread_pfm
   s4    	
r$   é   c                 C   s*  t | dƒ}d}|jjdkr&tdƒ‚t |¡}t|jƒdkrR|jd dkrRd}n8t|jƒdks|t|jƒdkr‚|jd dkr‚d	}ntd
ƒ‚| |r–dnd 	¡ ¡ | d 	¡ |jd |jd f ¡ |jj
}|dksä|dkrêtj
dkrê| }| d 	¡ | ¡ | |¡ W d  ƒ n1 s0    Y  dS )zWrite pfm file.

    Args:
        path (str): pathto file
        image (array): data
        scale (int, optional): Scale. Defaults to 1.
    ÚwbNÚfloat32zImage dtype must be float32.r   é   Tr%   Fz9Image must have H x W x 3, H x W x 1 or H x W dimensions.zPF
zPf
z%d %d
r   r   ú=Úlittlez%f
)r   ÚdtypeÚnamer   r   r   Úlenr!   ÚwriteÚencodeÚ	byteorderÚsysÚtofile)r   Úimager   r   r   r   r"   r"   r#   Ú	write_pfm;   s,    	
ÿÿÿ"r4   c                 C   s8   t  | ¡}|jdkr"t  |t j¡}t  |t j¡d }|S )z„Read image and output RGB image (0-1).

    Args:
        path (str): path to file

    Returns:
        array: RGB image (0-1)
    r(   g     ào@)Úcv2ZimreadÚndimZcvtColorZCOLOR_GRAY2BGRZCOLOR_BGR2RGB)r   Úimgr"   r"   r#   Ú
read_imageb   s
    	

r8   c                 C   s¤   | j d }| j d }||kr&|d }n|d }t || d ¡d  t¡}t || d ¡d  t¡}tj| ||ftjd}t 	t 
|d¡¡ ¡  ¡ }| d¡}|S )z‰Resize image and make it fit for network.

    Args:
        img (array): image

    Returns:
        tensor: data ready for network
    r   r%   i€  é    ©Úinterpolation)r(   r   r%   )r!   r   ÚceilÚastyper   r5   ÚresizeZ
INTER_AREAÚtorchÚ
from_numpyÚ	transposeÚ
contiguousr   Ú	unsqueeze)r7   Zheight_origZ
width_origr   r   r   Zimg_resizedr"   r"   r#   Úresize_imageu   s    	


ÿ
rD   c                 C   sF   t  | ddd…dd…dd…f ¡ d¡} tj|  ¡ ||ftjd}|S )zÉResize depth map and bring to CPU (numpy).

    Args:
        depth (tensor): depth
        width (int): image width
        height (int): image height

    Returns:
        array: processed depth
    r   NÚcpur:   )r?   ÚsqueezeÚtor5   r>   ÚnumpyÚINTER_CUBIC)Údepthr   r   Zdepth_resizedr"   r"   r#   Úresize_depth“   s
    (ÿrK   c                 C   s´   t | d | tj¡ƒ | ¡ }| ¡ }dd|  d }|| t d¡jkr`|||  ||  }ntj|j	|j
d}|dkr’t | d | d¡¡ n|dkr°t | d | d	¡¡ d
S )z€Write depth map to pfm and png file.

    Args:
        path (str): filepath without extension
        depth (array): depth
    z.pfmr(   é   r%   r   )r+   z.pngÚuint8Úuint16N)r4   r=   r   r'   ÚminÚmaxÚfinfoÚepsÚzerosr!   r+   r5   Zimwrite)r   rJ   ÚbitsZ	depth_minZ	depth_maxÚmax_valÚoutr"   r"   r#   Úwrite_depth¦   s    rW   )r%   )r%   )Ú__doc__r1   r   rH   r   r5   r?   r$   r4   r8   rD   rK   rW   r"   r"   r"   r#   Ú<module>   s   1
'