若干更新迭代

lib/seedance/client.ts

@@ -17,6 +17,7 @@ export type SeedanceSettings = {
   ratio?: string;
   duration?: number;
   resolution?: string;
+  inputMode?: "frames" | "reference";
 };
 
 export type SeedanceCreateInput = {
@@ -59,9 +60,7 @@ export async function createSeedanceTask(input: SeedanceCreateInput) {
   }
   const model = normalizeSeedanceModel(input.model, config.model);
   const materialContent = materialContentForProvider(input.materials, input.origin);
-  if (!isSeedance25Model(model) && materialContent.length > 4) {
-    throw new Error("Seedance 2.0 最多支持 4 个素材（加上文本后 content 最多 5 项）。");
-  }
+  if (!isSeedance25Model(model)) validateSeedance20Materials(input.materials);
   if (isSeedance25Model(model)) validateSeedance25Materials(input.materials);
   const payload = {
     model,
@@ -105,6 +104,19 @@ function validateSeedance25Materials(materials: PromptMaterial[]) {
   }
 }
 
+function validateSeedance20Materials(materials: PromptMaterial[]) {
+  const counts = materials.reduce((result, material) => {
+    result[material.type] += 1;
+    return result;
+  }, { image: 0, video: 0, audio: 0 });
+  if (counts.image > 9 || counts.video > 3 || counts.audio > 3) {
+    throw new Error("Seedance 2.0 最多支持 9 张图片、3 个视频、3 个音频。");
+  }
+  if (counts.audio > 0 && counts.image + counts.video === 0) {
+    throw new Error("Seedance 2.0 音频不能单独使用，请添加图片或视频素材。");
+  }
+}
+
 export async function querySeedanceTask(providerTaskId: string): Promise<SeedanceQueryResult> {
   const config = getSeedanceConfig();
   if (!config.apiKey) throw new Error("缺少 SEEDANCE_API_KEY，无法查询真实生成任务。");