o
    i                     @   s  d dl mZ d dlmZmZmZ d dlZd dlmZ d dl	m
Z
 ddlmZ ddlmZmZ ddlmZ dd	lmZ dd
lmZ ddlmZ ddlmZmZ ddlmZmZ ddlmZm Z  ddl!m"Z" ddl#m$Z$m%Z%m&Z&m'Z'm(Z( ddl)m*Z* ddl+m,Z, ddl-m.Z.m/Z/ ddl0m1Z1 e(2e3Z4ee&ddG dd de$Z5edG dd dej6Z7G dd dej6Z8G d d! d!ej6Z9d"d# Z:dLd$d%Z;d&ej<d'e=d(ej<fd)d*Z>	+dMd,ej6d-ej<d.ej<d/ej<d0eej< d1e?d2e?d3e"e% fd4d5Z@G d6d7 d7ej6ZAG d8d9 d9eZBe&d:de&G d;d< d<e ZCe&G d=d> d>eCZDG d?d@ d@ej6ZEe&dAdG dBdC dCeCeZFG dDdE dEej6ZGe&G dFdG dGeCZHe&dHdG dIdJ dJeCe1ZIg dKZJdS )N    )	dataclass)CallableOptionalUnionN)check_model_inputs   )ACT2FN)CacheDynamicCache)GenerationMixin)use_kernel_forward_from_hub)create_causal_mask)GradientCheckpointingLayer)BaseModelOutputWithPastCausalLMOutputWithPast)ROPE_INIT_FUNCTIONSdynamic_rope_update)ALL_ATTENTION_FUNCTIONSPreTrainedModel)Unpack)ModelOutputTransformersKwargsauto_docstringcan_return_tuplelogging)deprecate_kwarg   )	AutoModel   )	CsmConfigCsmDepthDecoderConfig)CsmGenerationMixinz:
    Base class for the model autoregressive outputs.
    )custom_introc                   @   s   e Zd ZU dZdZeej ed< dZ	eej ed< dZ
ee ed< dZeeejdf  ed< dZeeejdf  ed< dZeej ed	< dZeej ed
< dZee ed< dZeeejdf  ed< dZeeejdf  ed< dZeej ed< dS )CsmOutputWithPasta	  
    loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
        Language modeling loss (for next-token prediction).
    logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
        Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
    past_key_values (`Cache`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
        It is a [`~cache_utils.Cache`] instance. For more details, see our [kv cache guide](https://huggingface.co/docs/transformers/en/kv_cache).

        Contains pre-computed hidden-states (key and values in the self-attention blocks) that can be used (see
        `past_key_values` input) to speed up sequential decoding.
    depth_decoder_loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
        Language modeling loss (for next-token prediction) of the depth decoder model.
    depth_decoder_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
        Prediction scores of the depth decoder (scores for each vocabulary token before SoftMax).
    depth_decoder_past_key_values (`Cache`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
        It is a [`~cache_utils.Cache`] instance. For more details, see our [kv cache guide](https://huggingface.co/docs/transformers/en/kv_cache).
    depth_decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
        Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
        one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.

        Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
    depth_decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
        Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
        sequence_length)`.
    backbone_loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
        Language modeling loss (for next-token prediction) of the backbone model.
    Nlosslogitspast_key_values.hidden_states
attentionsdepth_decoder_lossdepth_decoder_logitsdepth_decoder_past_key_valuesdepth_decoder_hidden_statesdepth_decoder_attentionsbackbone_loss)__name__
__module____qualname____doc__r$   r   torchFloatTensor__annotations__r%   r&   r	   r'   tupler(   r)   r*   r+   r,   r-   r.    r7   r7   X/home/ubuntu/.local/lib/python3.10/site-packages/transformers/models/csm/modeling_csm.pyr#   2   s   
 r#   RMSNormc                       s.   e Zd Zd fdd	Zdd Zdd Z  ZS )	
CsmRMSNormư>c                    s&   t    tt|| _|| _dS )z9
        CsmRMSNorm is equivalent to T5LayerNorm
        N)super__init__nn	Parameterr3   onesweightvariance_epsilon)selfhidden_sizeeps	__class__r7   r8   r=   d   s   

zCsmRMSNorm.__init__c                 C   sJ   |j }|tj}|djddd}|t|| j  }| j|| S )Nr   T)keepdim)	dtypetor3   float32powmeanrsqrtrB   rA   )rC   r'   input_dtypevariancer7   r7   r8   forwardl   s
   zCsmRMSNorm.forwardc                 C   s   t | jj d| j S )Nz, eps=)r6   rA   shaperB   rC   r7   r7   r8   
extra_reprs   s   zCsmRMSNorm.extra_repr)r;   )r/   r0   r1   r=   rR   rU   __classcell__r7   r7   rF   r8   r:   b   s    r:   c                       sD   e Zd ZU ejed< ddef fddZe e	dd Z
  ZS )	CsmRotaryEmbeddinginv_freqNconfigc                    s   t    t|drt|jtr|jd|jd| _nd| _|j| _	|j| _
|| _t| j | _| | j|\}| _| jd|dd | j| _d S )Nrope_scaling	rope_typetypedefaultrX   F
persistent)r<   r=   hasattr
isinstancerZ   dictgetr[   max_position_embeddingsmax_seq_len_cachedoriginal_max_seq_lenrY   r   rope_init_fnattention_scalingregister_bufferrX   original_inv_freq)rC   rY   devicerX   rF   r7   r8   r=   z   s   
zCsmRotaryEmbedding.__init__c           
      C   s   | j d d d d f  |jd dd|j}|d d d d d f  }t|jjtr6|jjdkr6|jjnd}t	j
|dd+ | |  dd}t	j||fdd	}| | j }| | j }	W d    n1 smw   Y  |j|jd
|	j|jd
fS )Nr   rH   r   mpscpuF)device_typeenabledr   dim)rJ   )rX   floatexpandrS   rK   rk   ra   r\   strr3   autocast	transposecatcosrh   sinrJ   )
rC   xposition_idsinv_freq_expandedposition_ids_expandedrn   freqsembrx   ry   r7   r7   r8   rR      s   0&zCsmRotaryEmbedding.forwardN)r/   r0   r1   r3   Tensorr5   r   r=   no_gradr   rR   rV   r7   r7   rF   r8   rW   w   s   
 
rW   c                       $   e Zd Z fddZdd Z  ZS )CsmMLPc                    sx   t    || _|j| _|j| _tj| j| j|jd| _tj| j| j|jd| _	tj| j| j|jd| _
t|j | _d S )Nbias)r<   r=   rY   rD   intermediate_sizer>   Linearmlp_bias	gate_projup_proj	down_projr   
hidden_actact_fnrC   rY   rF   r7   r8   r=      s   
zCsmMLP.__init__c                 C   s$   |  | | || | }|S r   )r   r   r   r   )rC   rz   r   r7   r7   r8   rR      s    zCsmMLP.forwardr/   r0   r1   r=   rR   rV   r7   r7   rF   r8   r      s    
r   c                 C   sH   | dd| j d d f }| d| j d d df }tj| |fddS )z*Rotates half the hidden dims of the input..NrH   r   rp   )rS   r3   rw   )rz   x1x2r7   r7   r8   rotate_half   s   r   c                 C   sD   | |}| |}| | t| |  }|| t||  }||fS )a  Applies Rotary Position Embedding to the query and key tensors.

    Args:
        q (`torch.Tensor`): The query tensor.
        k (`torch.Tensor`): The key tensor.
        cos (`torch.Tensor`): The cosine part of the rotary embedding.
        sin (`torch.Tensor`): The sine part of the rotary embedding.
        position_ids (`torch.Tensor`, *optional*):
            Deprecated and unused.
        unsqueeze_dim (`int`, *optional*, defaults to 1):
            The 'unsqueeze_dim' argument specifies the dimension along which to unsqueeze cos[position_ids] and
            sin[position_ids] so that they can be properly broadcasted to the dimensions of q and k. For example, note
            that cos[position_ids] and sin[position_ids] have the shape [batch_size, seq_len, head_dim]. Then, if q and
            k have the shape [batch_size, heads, seq_len, head_dim], then setting unsqueeze_dim=1 makes
            cos[position_ids] and sin[position_ids] broadcastable to the shapes of q and k. Similarly, if q and k have
            the shape [batch_size, seq_len, heads, head_dim], then set unsqueeze_dim=2.
    Returns:
        `tuple(torch.Tensor)` comprising of the query and key tensors rotated using the Rotary Position Embedding.
    )	unsqueezer   )qkrx   ry   r{   unsqueeze_dimq_embedk_embedr7   r7   r8   apply_rotary_pos_emb   s
   

r   r'   n_repreturnc                 C   s^   | j \}}}}|dkr| S | dddddddddf |||||} | ||| ||S )z
    This is the equivalent of torch.repeat_interleave(x, dim=1, repeats=n_rep). The hidden states go from (batch,
    num_key_value_heads, seqlen, head_dim) to (batch, num_attention_heads, seqlen, head_dim)
    r   N)rS   rs   reshape)r'   r   batchnum_key_value_headsslenhead_dimr7   r7   r8   	repeat_kv   s
   0r           modulequerykeyvalueattention_maskscalingdropoutkwargsc                 K   s   t || j}t || j}	t||dd| }
|d ur3|d d d d d d d |jd f }|
| }
tjj|
dtj	d
|j}
tjj|
|| jd}
t|
|	}|dd }||
fS )Nr   r   rH   )rq   rJ   )ptrainingr   )r   num_key_value_groupsr3   matmulrv   rS   r>   
functionalsoftmaxrL   rK   rJ   r   r   
contiguous)r   r   r   r   r   r   r   r   
key_statesvalue_statesattn_weightscausal_maskattn_outputr7   r7   r8   eager_attention_forward   s   
&r   c                       s   e Zd ZdZdedef fddZedddd		
	
ddej	de
ej	ej	f deej	 dee deej dee de
ej	ej	f fddZ  ZS )CsmAttentionz=Multi-headed attention from 'Attention Is All You Need' paperrY   	layer_idxc                    s   t    || _|| _t|d|j|j | _|j|j | _	| jd | _
|j| _d| _tj|j|j| j |jd| _tj|j|j| j |jd| _tj|j|j| j |jd| _tj|j| j |j|jd| _d S )Nr   g      Tr   )r<   r=   rY   r   getattrrD   num_attention_headsr   r   r   r   attention_dropout	is_causalr>   r   attention_biasq_projk_projv_projo_projrC   rY   r   rF   r7   r8   r=      s(   
zCsmAttention.__init__past_key_valuer&   4.58new_nameversionNr'   position_embeddingsr   cache_positionr   r   c                 K   s$  |j d d }g |d| jR }| ||dd}	| ||dd}
| ||dd}|\}}t|	|
||\}	}
|d urW|||d}||
|| j	|\}
}t
}| jjdkret| jj }|| |	|
||f| jsqdn| j| jd|\}}|jg |dR   }| |}||fS )NrH   r   r   )ry   rx   r   eagerr   )r   r   )rS   r   r   viewrv   r   r   r   updater   r   rY   _attn_implementationr   r   r   r   r   r   r   )rC   r'   r   r   r&   r   r   input_shapehidden_shapequery_statesr   r   rx   ry   cache_kwargsattention_interfacer   r   r7   r7   r8   rR     s8   


zCsmAttention.forward)NN)r/   r0   r1   r2   r   intr=   r   r3   r   r6   r   r	   
LongTensorr   r   rR   rV   r7   r7   rF   r8   r      s*    r   c                       s   e Zd Zdedef fddZedddd							
				ddejde	ej de	ej
 de	e de	e de	ej
 de	eejejf  dee dejfddZ  ZS )CsmDecoderLayerrY   r   c                    sR   t    |j| _t||d| _t|| _t|j|jd| _	t|j|jd| _
d S )N)rY   r   rE   )r<   r=   rD   r   	self_attnr   mlpr:   rms_norm_epsinput_layernormpost_attention_layernormr   rF   r7   r8   r=   ;  s   

zCsmDecoderLayer.__init__r   r&   r   r   NFr'   r   r{   	use_cacher   r   r   r   c              
   K   s^   |}	|  |}| jd|||||||d|\}}
|	| }|}	| |}| |}|	| }|S )N)r'   r   r{   r&   r   r   r   r7   )r   r   r   r   )rC   r'   r   r{   r&   r   r   r   r   residual_r7   r7   r8   rR   E  s&   




zCsmDecoderLayer.forward)NNNFNN)r/   r0   r1   r   r   r=   r   r3   r   r   r   r	   boolr6   r   r   rR   rV   r7   r7   rF   r8   r   :  s8    
	
r   z[
    The bare Csm Model outputting raw hidden-states without any specific head on top.
    c                       sT   e Zd ZU eed< dZdZdgZdgZdZ	dZ
dZdZeedZ fddZ  ZS )	CsmPreTrainedModelrY   modelTr   r&   )r'   r(   c                    sP   t  | t|tr$|j}t|d D ]}|jj| jd| j	j
d qd S d S )Nr   r   )rN   std)r<   _init_weightsra   CsmCodebooksHeadnum_codebooksrangerA   datanormal_rY   initializer_range)rC   r   r   irF   r7   r8   r     s   
z CsmPreTrainedModel._init_weights)r/   r0   r1   r   r5   base_model_prefixsupports_gradient_checkpointing_no_split_modules_skip_keys_device_placement_supports_flash_attn_supports_sdpa_can_compile_fullgraph_supports_attention_backendr   r   _can_record_outputsr   rV   r7   r7   rF   r8   r   h  s   
 r   c                       s   e Zd ZU eed<  fddZee								ddee	j
 dee	j dee	j dee	j
 d	ee d
ee	j dee dee	j
 dee deeef fddZ  ZS )CsmDepthDecoderModelrY   c                    s   t     j| _ j| _t j j  j| _	t
 fddt jD | _t j jd| _t d| _d| _tj j jdd| _|   d S )Nc                       g | ]}t  |qS r7   r   .0r   rY   r7   r8   
<listcomp>      z1CsmDepthDecoderModel.__init__.<locals>.<listcomp>r   r   Fr   )r<   r=   pad_token_idpadding_idx
vocab_sizer>   	Embeddingr   backbone_hidden_sizeembed_tokens
ModuleListr   num_hidden_layerslayersr:   rD   r   normrW   
rotary_embgradient_checkpointingr   inputs_embeds_projector	post_initr   rF   r   r8   r=     s   zCsmDepthDecoderModel.__init__N	input_idsbackbone_last_hidden_stater   r{   r&   inputs_embedsr   r   r   r   c	              
   K   s  |durt j std d}|du |duA rtd|r(|du r(t| jd}|du rX|dur4| nd}
|dur?|j	d n|j	d }|durK|j
n|j
}t j|
|
| |d}|du rt j|d dd}|| j }| || }|d dk}|dur||dddf< nt j s|rtd	 | |}t| j|||||d
}|}|d}| ||}| jd| jj D ]}||f||||||d|	}q| |}t||r|dS ddS )aJ  
        backbone_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, backbone_hidden_size)`, *optional*):
            The last hidden state of the backbone model. Such input is required when the first codebook token (the one generated by the backbone model)
            is provided in the `input_ids` argument.
        NzCustom `position_ids` were provided but will be ignored. CSM depth decoder automatically determines position_ids from `cache_position` and as it requires them to be identical across the batch, the provided position_ids will be ignored.z;You must specify exactly one of input_ids or inputs_embeds.r   r   r   rk   )minzvWhen the first codebook token is provided, `backbone_last_hidden_state` should also be provided for correct inference.rY   input_embedsr   r   r&   r{   )r   r{   r&   r   r   r   last_hidden_stater&   )r3   compileris_compilingloggerwarning_once
ValueErrorr
   rY   get_seq_lengthrS   rk   arangeclampr  r  warningr  r   r   r	  r  r  r  r   )rC   r  r  r   r{   r&   r  r   r   r   past_seen_tokensinputs_seq_lengthrk   codebook_idxsoffsetinput_ids_are_first_codebookr   r'   r   decoder_layerr7   r7   r8   rR     sr   

	

zCsmDepthDecoderModel.forward)NNNNNNNN)r/   r0   r1   r    r5   r=   r   r   r   r3   r   r4   r   r	   r   r   r   r   r6   r   rR   rV   r7   r7   rF   r8   r     sD   
 	

r   c                       s&   e Zd Z fddZdddZ  ZS )r   c                    s0   t    || _tt| jd ||| _d S Nr   )r<   r=   r   r>   r?   r3   emptyrA   )rC   rD   r   r  rF   r7   r8   r=     s   
 zCsmCodebooksHead.__init__Nc                    sf   |d u rj d }| jt|  n	|d }| j|   fddt j d D tjddS )Nr   c              	      s2   g | ]}t jd d |d d f  | jqS r   )r>   r   linearT)r   codebook_idxcodebook_weightr'   r7   r8   r     s    $z,CsmCodebooksHead.forward.<locals>.<listcomp>r   rp   )rS   rA   r3   r  r   stack)rC   r'   r   
seq_lengthr!  r7   r*  r8   rR     s   

zCsmCodebooksHead.forwardr   r   r7   r7   rF   r8   r     s    r   a$  
    The CsmDepthDecoder Model transformer, with a [`CsmCodebooksHead`] on top,
    which can be seen a position-specific language modeling head, allowing to use a different linear layer for each codebook
    (e.g. position 0 is the first codebook and uses the first codebook head, etc.)
    c                       s  e Zd ZdZdZdZ fddZee										dde	e
j de	e
j de	e
j de	e
j d	e	eeee
j f  d
e	e
j de	e
j de	e de	e
j deee
jf dee deeef fddZ				dde
jd	e	e de	e
j d
e	e
j de	e
j f
 fddZ  ZS )CsmDepthDecoderForCausalLMNc                    s>   t  | t|| _|j| _t|j|j|j| _| 	  d S r   )
r<   r=   r   r   r  r   rD   r   codebooks_headr  r   rF   r7   r8   r=     s
   
z#CsmDepthDecoderForCausalLM.__init__r   r  r  r   r{   r&   r  labelsr   r   logits_to_keepr   r   c                 K   s   | j d||||||||	d|}|d }t|
tr+|
dkr$tdd}n	t|
 d}n|
}| |dd|ddf |	durA|	| nd}| }d}|durg|dddf  }| jd|d| jj|d|}t	|||j
|j|jdS )	a  
        backbone_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, backbone_hidden_size)`, *optional*):
            The last hidden state of the backbone model. Such input is required when the first codebook token (the one generated by the backbone model)
            is provided in the `input_ids` argument.
        labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
            Labels for computing the masked language modeling loss. Indices should either be in `[0, ...,
            config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored
            (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`.
        )r  r  r   r{   r&   r  r   r   r   r   N.)r%   r0  r  shift_labels)r$   r%   r&   r'   r(   r7   )r   ra   r   slicer/  r   loss_functionrY   r  r   r&   r'   r(   )rC   r  r  r   r{   r&   r  r0  r   r   r1  r   outputsr'   slice_indicesr%   r$   r2  r7   r7   r8   rR     sJ   	
&z"CsmDepthDecoderForCausalLM.forwardc           	         sH   t  j|||||fi |}|d d dk}|s|d |d |S )Nr   r   r  r{   )r<   prepare_inputs_for_generationpop)	rC   r  r&   r   r  r   r   model_inputsis_first_generation_steprF   r7   r8   r7  c  s   	


z8CsmDepthDecoderForCausalLM.prepare_inputs_for_generation)
NNNNNNNNNr   NNNN)r/   r0   r1   _tied_weights_keys_tp_plan_pp_planr=   r   r   r   r3   r   r4   r   r   r	   listr   r   r   r   r6   r   rR   r7  rV   r7   r7   rF   r8   r.  
  sr    		

Er.  c                       r   )CsmBackboneModelEmbeddingsc                    sD   t    t|j|j |j| _| jdt	
|j|j dd d S )Naudio_tokens_offsetsFr^   )r<   r=   r>   r  r   r  rD   embed_audio_tokensri   r3   r  r   rF   r7   r8   r=   {  s
   

z#CsmBackboneModelEmbeddings.__init__c                 C   s    |  || j }|jdd}|S )Nr   rp   )rB  rA  sum)rC   r  r  r7   r7   r8   rR     s   z"CsmBackboneModelEmbeddings.forwardr   r7   r7   rF   r8   r@  z  s    r@  c                       s   e Zd Z fddZee							ddeej deej	 deej dee
 deej d	eej d
ee dee defddZ  ZS )CsmBackboneModelc                    sv   t     j| _ j| _t | _t fddt	 j
D | _t j jd| _t d| _d| _|   d S )Nc                    r   r7   r   r   r   r7   r8   r     r   z-CsmBackboneModel.__init__.<locals>.<listcomp>r   r   F)r<   r=   r   r   r  r@  r  r>   r  r   r  r  r:   rD   r   r  rW   r	  r
  r  r   rF   r   r8   r=     s   
zCsmBackboneModel.__init__Nr  r   r{   r&   r  r   r   r   r   c              	   K   s   |du |duA rt d|du r| |}|r!|du r!t| jd}|du r=|dur-| nd}	tj|	|	|jd  |jd}|du rF|	d}t
| j|||||d}
|}| ||}| jd| jj D ]}||f|
||||d|}qb| |}t||d	S )
a&  
        input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length, num_codebooks) or (batch_size, sequence_length)`):
            1. (batch_size, sequence_length): corresponds to the input sequence prepared with the processor from the text prompt. Such input
            requires `input_values` to be provided so that audio can be encoded in codebook tokens and then merged with the text tokens.

            2. (batch_size, sequence_length, num_codebooks): codebook tokens generated during the autoregressive decoding. Such input is not meant to be used by end users.

            Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
            [`PreTrainedTokenizer.__call__`] for details.

            [What are input IDs?](../glossary#input-ids)
        Nz:You must specify exactly one of input_ids or inputs_embedsr   r   r   r  r  )r   r{   r&   r   r   r  )r  r  r
   rY   r  r3   r  rS   rk   r   r   r	  r  r  r  r   )rC   r  r   r{   r&   r  r   r   r   r  r   r'   r   r$  r7   r7   r8   rR     sP   

	

zCsmBackboneModel.forward)NNNNNNN)r/   r0   r1   r=   r   r   r   r3   r   r   r	   r4   r   r   r   r   rR   rV   r7   r7   rF   r8   rD    s<    	
rD  z
    The Csm model consists of two llama-like auto-regressive transformer models: a backbone model that predicts the first codebook token and a depth decoder that predicts the other codebook tokens.
    c                       s  e Zd ZddgZ fddZdd Zdd Zd	d
 Ze fddZ	 fddZ
				d$deej deej deej deej deej f
ddZ				d$dejdee deej deej deej f
 fddZee											d%deej deej deej deej deej deeeeej f  deej deej dee deej d eeejf d!ee deeef fd"d#Z  ZS )&CsmForConditionalGenerationz5backbone_model.embed_tokens.embed_audio_tokens.weightz'depth_decoder.model.embed_tokens.weightc                    sp   t  | |j| _tj|j|jdd| _t|j|j| _	t
|| _t|j| _t|j| _|   d S )NFr   )r<   r=   r  r>   r   rD   lm_headr  text_vocab_sizeembed_text_tokensrD  _from_configbackbone_modelr.  depth_decoder_configdepth_decoderr   from_configcodec_configcodec_modelr  r   rF   r7   r8   r=     s   z$CsmForConditionalGeneration.__init__c                 C   s   | j jS r   rJ  r  rT   r7   r7   r8   get_input_embeddings  s   z0CsmForConditionalGeneration.get_input_embeddingsc                 C   s   || j _d S r   rP  )rC   r   r7   r7   r8   set_input_embeddings  s   z0CsmForConditionalGeneration.set_input_embeddingsc                 C   s(   | j jr| | jjj| jjj d S d S r   )rY   tie_codebooks_embeddings_tie_or_clone_weightsrJ  r  rB  rL  r   rT   r7   r7   r8   _tie_weights  s   z(CsmForConditionalGeneration._tie_weightsc                    s   | ddrt j|i |\}}n	t j|i |}d t  fddt|j D }t|jjddi| |D ]
}t	|j |  q?d|v rR||fS |S )Noutput_loading_infoFdepth_decoder_c                    s(   i | ]\}}|  r|d  |qS r   )
startswith)r   attrr   prefix
prefix_lenr7   r8   
<dictcomp>  s    z?CsmForConditionalGeneration.from_pretrained.<locals>.<dictcomp>_from_model_config)
rc   r<   from_pretrainedlenvarsgeneration_configitemsrL  r   delattr)clsargsr   r   loading_infodepth_decoder_attrsrY  rF   rZ  r8   r_    s   z+CsmForConditionalGeneration.from_pretrainedc                    sV   d}| j j }|dd  | D ]\}}t| j|| | qt j|i | d S )NrW  transformers_version)rL  rb  to_diff_dictr8  rc  setattrr<   save_pretrained)rC   rf  r   r[  rh  rY  r   rF   r7   r8   rl    s   z+CsmForConditionalGeneration.save_pretrainedNr  input_valuesinput_values_cutoffsr0  r   c                    sF  |  |}|durtj|d}||dk  }||dk }tj| |jd	t
|d}||dk }t j g }t||D ]?\}	}
|
|
dk }
t|
jd d D ]+}|
| }|
|d  }|	d||f }| j|d}|jdd}||d  qUqBtdd	 |D  t fd
d|D }| j|}W d   n1 sw   Y  | jj}||k}| j|}|| ||< tjdd| jjf|jtjd| jj }| j|d}|| jj k}|!|" d||< |dur|d!dd| jj}|| ||< |||< |dkj#dd}d||d |d ddf< |}||dS )a  
        Merges the input_ids and input_values to produce a single inputs_embeds tensor:
        1 - Infers the codec model on the input_values to retrieve codebook token.
        2 - Embeds codebook tokens and places them at the correct positions in the inputs_embeds tensor.
        3 - If labels are provided, expands them to match codebook dimensions and position the target codebook tokens in the inputs_embeds tensor.

        Args:
            input_ids (`torch.Tensor` of shape `(batch_size, sequence_length)`):
                The input ids to embed.
            input_values (`torch.Tensor` of shape `(batch_size, channels, audio_sequence_length)`):
                The audio input values to embed.
            input_values_cutoffs (`torch.Tensor` of shape `(batch_size, max_num_audio)`):
                The cutoffs of the audio input values relative to its batch index, padded with -1 when no audio.
        Nr   r   r   r  rH   r   .c                 s   s    | ]}|j d  V  qdS )r   N)rS   r   elr7   r7   r8   	<genexpr>Y  s    zQCsmForConditionalGeneration._merge_input_ids_with_input_values.<locals>.<genexpr>c                    s,   g | ]}t j|d d d  |jd   fqS )r   )r>   r   padrS   rp  max_audio_framesr7   r8   r   [  s   , zRCsmForConditionalGeneration._merge_input_ids_with_input_values.<locals>.<listcomp>)rk   rJ   iTas_tuple)r  r0  )$rH  r>   r   rs  diffr3   r  maxrk   rs   r`  r   r   zipr   rS   rO  encodeaudio_codesrv   appendr,  get_audio_codes_maskrY   audio_token_idrJ  r  r@   r   longcodebook_eos_token_idsqueezeaudio_eos_token_idrepeatrC  nonzero)rC   r  rm  rn  r0  r  audio_lengthsinput_values_maskaudio_tokens_listbatch_input_valuesbatch_input_values_cutoffsr   	start_idxend_idxaudio_batchcodec_outputscodebook_idsbatched_audio_token_idsaudio_codes_maskr  audio_token_maskaudio_embedsaudio_eos_frame_idsaudio_eos_embedsaudio_eos_token_masklabels_expanded depth_decoder_ignore_frames_idxsr7   rt  r8   "_merge_input_ids_with_input_values)  s\   




z>CsmForConditionalGeneration._merge_input_ids_with_input_valuesr&   r   r  r   c           	         s   t  jd	|||||d|}|d ur>|jdkr>|dd u r>| j||d|d|dd}||d |d d d |S )
N)r  r&   r   r  r   r   r  rm  rn  r0  )r  rm  rn  r0  )r  r0  r  r7   )r<   r7  ndimrc   r  r   )	rC   r  r&   r   r  r   r   r9  merged_inputsrF   r7   r8   r7  {  s(   	 	z9CsmForConditionalGeneration.prepare_inputs_for_generationr   r{   r   r1  r   c                 K   s  |dur|j dkr| ||||}|d }|d }d}| jd||||||	|
d|}|d }t|tr:t| dn|}| |dd|ddf }d}d}d}d}|dur|dddddf }| jd||| jj	d|}|ddddddf d	kj
d
d }|| dd| jjd f }tjj|ddd}|jdd}||d |d d ddf }|| }| jd|||	d|d|}|j}|| }t|||||j|j|j|dur|jnd|dur|jnd|dur|jnd|dur|jdS ddS )a  
        input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length, num_codebooks) or (batch_size, sequence_length)`):
            1. (batch_size, sequence_length): corresponds to the input sequence prepared with the processor from the text prompt. Such input
            requires `input_values` to be provided so that audio can be encoded in codebook tokens and then merged with the text tokens.

            2. (batch_size, sequence_length, num_codebooks): codebook tokens generated during the autoregressive decoding. Such input is not meant to be used by end users.

            Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
            [`PreTrainedTokenizer.__call__`] for details.

            [What are input IDs?](../glossary#input-ids)
        input_values_cutoffs (`torch.Tensor` of shape `(batch_size, max_num_audio)`, *optional*):
            Specify the end positions of audio segments within each batch entry, relative to the concatenated audio input.
            If a batch entry has fewer segments than the maximum, it is padded with -1. For example, in a batch of 2 sequences
            where the first contains 2 audio segments of length l1, and the second contains 1 audio segment of length l2,
            the input_values_cutoffs would be: [[l1, 2 * l1], [l2, -1]].
        labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
            Labels for computing the masked language modeling loss. Indices should be in `[config.audio_token_id, -100, -101]`.
            Requires targeted `input_values` to be provided as audio tokens will be inferred from it using the `codec_model`.
            - `config.audio_token_id` indicates an audio frames (considering sequence length elements as frames)
            - `-100` will be ignored in the loss computation
            - `-101` indicates the audio frame will be used only for the backbone model (using the first codebook token as labels)

            Such labels can be prepared using `output_labels=True` when calling [`CsmProcessor`].
        logits_to_keep (`int` or `torch.Tensor`, *optional*):
            Kept for compatibility. Does not support another value than:
            1. `0`, which is equivalent to keeping all logits, used in the training regime
            2. `1`, which is equivalent to keeping only the last logit, used in the generation regime

        Example:

        ```python
        >>> import torch
        >>> from transformers import CsmForConditionalGeneration, AutoProcessor
        >>> from datasets import load_dataset, Audio

        >>> model_id = "sesame/csm-1b"
        >>> torch_device = "cuda" if torch.cuda.is_available() else "cpu"

        >>> processor = AutoProcessor.from_pretrained(model_id)

        >>> ds = load_dataset("hf-internal-testing/dailytalk-dummy", split="train")
        >>> # ensure the audio is 24kHz
        >>> ds = ds.cast_column("audio", Audio(sampling_rate=24000))

        >>> conversation = []
        >>> # prepare a conversation with text and corresponding audio
        >>> for text, audio, speaker_id in zip(ds[:4]["text"], ds[:4]["audio"], ds[:4]["speaker_id"]):
        ...     conversation.append(
        ...         {
        ...             "role": f"{speaker_id}",
        ...             "content": [{"type": "text", "text": text}, {"type": "audio", "path": audio["array"]}],
        ...         }
        ...     )

        >>> inputs = processor.apply_chat_template(
        ...     conversation,
        ...     tokenize=True,
        ...     return_dict=True,
        ...     output_labels=True,
        ... ).to(torch_device)

        >>> model = CsmForConditionalGeneration.from_pretrained(model_id, device_map=torch_device)
        >>> output = model(**inputs)
        >>> output.loss.backward()
        ```Nr   r  r0  )r  r   r{   r&   r  r   r   r   )r%   r0  r  r   rx  rH   rp   .ro  )r   Trv  )r  r  r   return_dictr0  )r$   r.   r)   r%   r&   r'   r(   r*   r+   r,   r-   r7   )r  r  rJ  ra   r   r3  rF  r4  rY   r  allr   r>   r   rs  r  rL  r$   r#   r&   r'   r(   r%   )rC   r  rm  r   rn  r{   r&   r  r0  r   r   r1  r   r  backbone_outputsbackbone_hidden_statesr6  backbone_logitsr$   r.   r)   depth_decoder_outputsbackbone_labels
train_maskdepth_decoder_input_ids
train_idxsbackbone_last_hidden_statesdepth_decoder_labelsr7   r7   r8   rR     s   S
(	z#CsmForConditionalGeneration.forwardr;  )NNNNNNNNNNr   )r/   r0   r1   r<  r=   rQ  rR  rU  classmethodr_  rl  r   r3   r   r  r   r	   r4   r7  r   r   r   r?  r   r   r   r   r6   r#   rR   rV   r7   r7   rF   r8   rE    s    

U	

rE  )r   rD  r   r.  rE  r%  )r   )Kdataclassesr   typingr   r   r   r3   torch.nnr>   transformers.utils.genericr   activationsr   cache_utilsr	   r
   
generationr   integrationsr   masking_utilsr   modeling_layersr   modeling_outputsr   r   modeling_rope_utilsr   r   modeling_utilsr   r   processing_utilsr   utilsr   r   r   r   r   utils.deprecationr   autor   configuration_csmr   r    generation_csmr!   
get_loggerr/   r  r#   Moduler:   rW   r   r   r   r   r   r   rr   r   r   r   r   r   r   r.  r@  rD  rE  __all__r7   r7   r7   r8   <module>   s   
*$

G.jiY  U