(model/audio): add tokens in usage output message (#276)

Author: songguocola

src/main/java/com/alibaba/dashscope/audio/asr/recognition/RecognitionUsage.java

@@ -1,11 +1,22 @@
 // Copyright (c) Alibaba, Inc. and its affiliates.
 package com.alibaba.dashscope.audio.asr.recognition;
 
+import com.alibaba.dashscope.utils.ApiKeywords;
+import com.google.gson.annotations.SerializedName;
 import lombok.Data;
 import lombok.experimental.SuperBuilder;
 
 @Data
 @SuperBuilder
 public final class RecognitionUsage {
   private Integer duration;
+
+  @SerializedName(ApiKeywords.INPUT_TOKENS)
+  private Integer inputTokens;
+
+  @SerializedName(ApiKeywords.OUTPUT_TOKENS)
+  private Integer outputTokens;
+
+  @SerializedName(ApiKeywords.TOTAL_TOKENS)
+  private Integer totalTokens;
 }

src/main/java/com/alibaba/dashscope/audio/tts/SpeechSynthesisUsage.java

@@ -1,11 +1,22 @@
 // Copyright (c) Alibaba, Inc. and its affiliates.
 package com.alibaba.dashscope.audio.tts;
 
+import com.alibaba.dashscope.utils.ApiKeywords;
+import com.google.gson.annotations.SerializedName;
 import lombok.Data;
 import lombok.experimental.SuperBuilder;
 
 @Data
 @SuperBuilder
 public final class SpeechSynthesisUsage {
   private Integer characters;
+
+  @SerializedName(ApiKeywords.INPUT_TOKENS)
+  private Integer inputTokens;
+
+  @SerializedName(ApiKeywords.OUTPUT_TOKENS)
+  private Integer outputTokens;
+
+  @SerializedName(ApiKeywords.TOTAL_TOKENS)
+  private Integer totalTokens;
 }

src/main/java/com/alibaba/dashscope/utils/ApiKeywords.java

@@ -93,6 +93,8 @@ public class ApiKeywords {
 
   public static final String INPUT_TOKENS = "input_tokens";
 
+  public static final String TOTAL_TOKENS = "total_tokens";
+
   public static final String ERROR = "error";
 
   public static final String EVENT = "event";