生成代码包

2026-09-09 10:29:41 +08:00
commit 900c5339e2
905 changed files with 216635 additions and 0 deletions
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+/* ================================================================
+ * jb_ringbuffer.c  —  环形缓冲区实现
+ * ================================================================
+ */
+#include "jb_ringbuffer.h"
+
+/* ── 初始化 ── */
+void jbRbInit(jb_ringbuffer_t *rb)
+{
+    if (!rb)
+    {
+        return;
+    }
+    rb->write = rb->read = rb->count = 0;
+}
+
+/* ── 压入一个字节 ── */
+void jbRbPush(jb_ringbuffer_t *rb, uint8_t byte)
+{
+    if (!rb)
+    {
+        return;
+    }
+    if (rb->count >= JB_RB_CAPACITY)
+    {
+        return;   /* 已满 — 丢弃 */
+    }
+    rb->buf[rb->write] = byte;
+    rb->write = (rb->write + 1) % JB_RB_CAPACITY;
+    rb->count++;
+}
+
+/* ── 弹出一个字节 ── */
+uint8_t jbRbPop(jb_ringbuffer_t *rb)
+{
+    if (!rb || rb->count == 0)
+    {
+        return 0;
+    }
+    uint8_t byte = rb->buf[rb->read];
+    rb->read = (rb->read + 1) % JB_RB_CAPACITY;
+    rb->count--;
+    return byte;
+}
+
+/* ── 查看指定偏移字节（不消费）── */
+uint8_t jbRbPeek(const jb_ringbuffer_t *rb, uint16_t offset)
+{
+    if (!rb || offset >= rb->count)
+    {
+        return 0;
+    }
+    uint16_t idx = (rb->read + offset) % JB_RB_CAPACITY;
+    return rb->buf[idx];
+}
+
+/* ── 可读字节数 ── */
+uint16_t jbRbAvailable(const jb_ringbuffer_t *rb)
+{
+    if (!rb)
+    {
+        return 0;
+    }
+    return rb->count;
+}
+
+/* ── 清空缓冲区 ── */
+void jbRbClear(jb_ringbuffer_t *rb)
+{
+    if (!rb)
+    {
+        return;
+    }
+    rb->write = rb->read = rb->count = 0;
+}