Revert "fix janus model"

This reverts commit ab2bd3e.

src/models.js

@@ -44,10 +44,10 @@ import {
 } from './configs.js';
 
 import {
-    createInferenceSession,
     deviceToExecutionProviders,
-    isONNXProxy,
+    createInferenceSession,
     isONNXTensor,
+    isONNXProxy,
 } from './backends/onnx.js';
 import {
     DATA_TYPES,
@@ -75,48 +75,49 @@ import {
 } from './utils/constants.js';
 
 import {
-    ClassifierFreeGuidanceLogitsProcessor,
+    LogitsProcessorList,
     ForcedBOSTokenLogitsProcessor,
     ForcedEOSTokenLogitsProcessor,
-    LogitsProcessorList,
-    MinLengthLogitsProcessor,
-    MinNewTokensLengthLogitsProcessor,
-    NoBadWordsLogitsProcessor,
+    SuppressTokensAtBeginLogitsProcessor,
+    WhisperTimeStampLogitsProcessor,
     NoRepeatNGramLogitsProcessor,
     RepetitionPenaltyLogitsProcessor,
-    SuppressTokensAtBeginLogitsProcessor,
+    NoBadWordsLogitsProcessor,
+    MinLengthLogitsProcessor,
+    MinNewTokensLengthLogitsProcessor,
+
     TemperatureLogitsWarper,
     TopKLogitsWarper,
     TopPLogitsWarper,
-    WhisperTimeStampLogitsProcessor,
+    ClassifierFreeGuidanceLogitsProcessor,
 } from './generation/logits_process.js';
 
 import {
     GenerationConfig,
 } from './generation/configuration_utils.js';
 
-import { RawImage } from './utils/image.js';
 import {
     cat,
-    full,
-    full_like,
     mean,
+    zeros,
+    zeros_like,
     ones,
     ones_like,
+    full,
+    full_like,
     stack,
     std_mean,
     Tensor,
-    zeros,
-    zeros_like,
 } from './utils/tensor.js';
+import { RawImage } from './utils/image.js';
 
-import { apis } from './env.js';
-import { LogitsSampler } from './generation/logits_sampler.js';
-import { EosTokenCriteria, MaxLengthCriteria, StoppingCriteriaList } from './generation/stopping_criteria.js';
 import { dynamic_time_warping, max, medianFilter } from './utils/maths.js';
+import { EosTokenCriteria, MaxLengthCriteria, StoppingCriteriaList } from './generation/stopping_criteria.js';
+import { LogitsSampler } from './generation/logits_sampler.js';
+import { apis } from './env.js';
 
-import { whisper_language_to_code } from './models/whisper/common_whisper.js';
 import { WhisperGenerationConfig } from './models/whisper/generation_whisper.js';
+import { whisper_language_to_code } from './models/whisper/common_whisper.js';
 
 //////////////////////////////////////////////////
 // Model types: used internally
@@ -770,6 +771,10 @@ function multimodality_prepare_inputs_for_generation(self, input_ids, model_inpu
         }
     }
 
+    if (has_past_key_values || !model_inputs.pixel_values) {
+        model_inputs.pixel_values = full([0, 0, 3, 384, 384], 1.0);
+    }
+
     if (has_past_key_values) {
         const num_img_tokens = 0;
         const num_text_tokens = 1;