增加即梦图片5.0和视频2.5的能力

lib/video-settings.ts

@@ -1,6 +1,7 @@
 export const VIDEO_DURATION_AUTO = -1;
 export const VIDEO_DURATION_MIN = 4;
 export const VIDEO_DURATION_MAX = 15;
+export const VIDEO_DURATION_MAX_SEEDANCE_25 = 30;
 export const VIDEO_DURATION_DEFAULT = 5;
 export const VIDEO_DURATION_OPTIONS = Array.from(
   { length: VIDEO_DURATION_MAX - VIDEO_DURATION_MIN + 1 },
@@ -14,8 +15,18 @@ export const VIDEO_RESOLUTION_DEFAULT = "720p";
 export const VIDEO_RESOLUTIONS = ["720p", "1080p", "480p"] as const;
 export const VIDEO_FAST_RESOLUTIONS = ["720p", "480p"] as const;
 
+export const SEEDANCE_20_MODEL = "doubao-seedance-2-0-260128";
+export const SEEDANCE_25_MODEL = "doubao-seedance-2-5-260628";
+export const SEEDANCE_MODELS = [
+  { id: SEEDANCE_20_MODEL, label: "Seedance 2.0" },
+  { id: SEEDANCE_25_MODEL, label: "Seedance 2.5" }
+] as const;
+
+export type SeedanceModel = (typeof SEEDANCE_MODELS)[number]["id"];
+
 type VideoDurationOptions = {
   allowAuto?: boolean;
+  model?: string;
 };
 
 export function clampVideoDuration(
@@ -27,12 +38,35 @@ export function clampVideoDuration(
   if (!Number.isFinite(duration)) return fallback;
   const rounded = Math.round(duration);
   if (options.allowAuto !== false && rounded === VIDEO_DURATION_AUTO) return VIDEO_DURATION_AUTO;
-  return Math.min(VIDEO_DURATION_MAX, Math.max(VIDEO_DURATION_MIN, rounded));
+  return Math.min(seedanceMaximumOutputDuration(options.model), Math.max(VIDEO_DURATION_MIN, rounded));
 }
 
-export function normalizeVideoDuration(value: unknown) {
+export function normalizeVideoDuration(value: unknown, model?: string) {
   if (value === undefined || value === null || value === "") return undefined;
-  return clampVideoDuration(value);
+  return clampVideoDuration(value, VIDEO_DURATION_DEFAULT, { model });
+}
+
+export function seedanceMaximumOutputDuration(model?: string) {
+  return isSeedance25Model(model) ? VIDEO_DURATION_MAX_SEEDANCE_25 : VIDEO_DURATION_MAX;
+}
+
+export function seedanceDurationOptions(model?: string) {
+  const maximum = seedanceMaximumOutputDuration(model);
+  return Array.from({ length: maximum - VIDEO_DURATION_MIN + 1 }, (_, index) => VIDEO_DURATION_MIN + index);
+}
+
+export function normalizeSeedanceModel(value: unknown, fallback: SeedanceModel = SEEDANCE_20_MODEL): SeedanceModel {
+  const normalized = String(value || "").trim();
+  return isSupportedSeedanceModel(normalized) ? normalized : fallback;
+}
+
+export function isSupportedSeedanceModel(value: unknown): value is SeedanceModel {
+  const normalized = String(value || "").trim();
+  return SEEDANCE_MODELS.some((model) => model.id === normalized);
+}
+
+export function isSeedance25Model(model?: string) {
+  return String(model || "").trim() === SEEDANCE_25_MODEL;
 }
 
 export function normalizeVideoRatio(value: unknown, fallback = VIDEO_RATIO_DEFAULT) {