From b4ac46df1e7310dc5c5adfc5f41f49e4b3bba01f Mon Sep 17 00:00:00 2001
From: abearxiong <xiongxiao1012@outlook.com>
Date: Sat, 19 Apr 2025 23:28:50 +0800
Subject: [PATCH] feat: add generate silent video

---
 src/silent/generate-silent.ts | 12 ++++++++++++
 src/silent/index.ts           |  1 +
 2 files changed, 13 insertions(+)
 create mode 100644 src/silent/generate-silent.ts

diff --git a/src/silent/generate-silent.ts b/src/silent/generate-silent.ts
new file mode 100644
index 0000000..26f1530
--- /dev/null
+++ b/src/silent/generate-silent.ts
@@ -0,0 +1,12 @@
+/**
+ * 生成无声音频
+ * @param duration 音频时长（秒）
+ * @param sampleRate 采样率
+ * @param channels 声道数
+ * @returns 无声音频
+ */
+export const generateSilent = (duration: number = 2, sampleRate: number = 16000, channels: number = 1) => {
+  const bufferSize = Math.floor(duration * sampleRate * channels * 2); // 2 bytes per sample
+  const silent = Buffer.alloc(bufferSize);
+  return silent;
+};
diff --git a/src/silent/index.ts b/src/silent/index.ts
index c09d5a7..2537871 100644
--- a/src/silent/index.ts
+++ b/src/silent/index.ts
@@ -1,3 +1,4 @@
+export * from './generate-silent.ts';
 /**
  * 判断是否为无声,
  * 方法 1：检查 Buffer 是否全 0（适用于原始 PCM 数据）