fix:调整渲染缓冲区

android/src/main/kotlin/top/skychip/video_decode_plugin/VideoDecoder.kt

@@ -80,7 +80,7 @@ class VideoDecoder(
 
     // 渲染帧率（fps），可由外部控制，默认30
     @Volatile
-    var renderFps: Int = 25
+    var renderFps: Int = 20
 
     // 兜底：记录最近一次I帧的frameSeq，P/B帧依赖校验
     @Volatile
@@ -111,6 +111,10 @@ class VideoDecoder(
     private val reorderLock = ReentrantLock() // 线程安全
     private val MAX_REORDER_BUFFER_SIZE = BUFFER_QUEUE_CAPACITY
 
+    // 低水位启动渲染标志
+    @Volatile
+    private var renderStarted = false
+
     // 输入帧结构体
     private data class FrameData(
         val data: ByteArray,
@@ -161,6 +165,39 @@ class VideoDecoder(
         
         // 创建解码器
         val decoder = MediaCodec.createDecoderByType(mime)
+
+        // ========== 输出所有支持的视频解码器及类型 ==========
+        try {
+            val codecList = if (android.os.Build.VERSION.SDK_INT >= 21) {
+                android.media.MediaCodecList(android.media.MediaCodecList.ALL_CODECS).codecInfos
+            } else {
+                arrayOf<android.media.MediaCodecInfo>()
+            }
+            Log.i(TAG, "[CodecList] 支持的视频解码器如下：")
+            for (info in codecList) {
+                if (!info.isEncoder) {
+                    val types = info.supportedTypes.joinToString(", ")
+                    val name = info.name
+                    val isHardware = if (android.os.Build.VERSION.SDK_INT >= 29) info.isHardwareAccelerated else !name.startsWith("OMX.google.")
+                    val isSoftware = if (android.os.Build.VERSION.SDK_INT >= 29) info.isSoftwareOnly else name.startsWith("OMX.google.")
+                    Log.i(TAG, "解码器名称: $name, 支持类型: [$types], 硬解码: $isHardware, 软解码: $isSoftware")
+                }
+            }
+        } catch (e: Exception) {
+            Log.w(TAG, "[CodecList] 获取解码器列表失败", e)
+        }
+
+        // ========== 输出当前创建的解码器类型 ==========
+        try {
+            val codecInfo = decoder.codecInfo
+            val name = codecInfo.name
+            val isHardware = if (android.os.Build.VERSION.SDK_INT >= 29) codecInfo.isHardwareAccelerated else !name.startsWith("OMX.google.")
+            val isSoftware = if (android.os.Build.VERSION.SDK_INT >= 29) codecInfo.isSoftwareOnly else name.startsWith("OMX.google.")
+            Log.i(TAG, "[CurrentCodec] 当前解码器: $name, 硬解码: $isHardware, 软解码: $isSoftware")
+        } catch (e: Exception) {
+            Log.w(TAG, "[CurrentCodec] 获取当前解码器信息失败", e)
+        }
+
         // 设置解码回调
         decoder.setCallback(object : MediaCodec.Callback() {
             override fun onInputBufferAvailable(codec: MediaCodec, index: Int) {
@@ -237,6 +274,17 @@ class VideoDecoder(
                     return@Runnable
                 }
 
+                // 低水位启动渲染逻辑
+                if (!renderStarted) {
+                    if (outputFrameQueue.size >= (BUFFER_QUEUE_CAPACITY * 0.15).toInt()) {
+                        renderStarted = true
+                        Log.i(TAG, "[Render] 渲染启动，outputFrameQueue已达低水位: ${outputFrameQueue.size}")
+                    } else {
+                        // 未达到低水位前不渲染
+                        return@Runnable
+                    }
+                }
+
                 val frame = outputFrameQueue.poll()
                 if (frame != null) {
                     frame.codec.releaseOutputBuffer(frame.bufferIndex, true)
@@ -247,10 +295,10 @@ class VideoDecoder(
                         mainHandler.post { onFrameRendered() }
                         hasNotifiedFlutter = true
                     }
-                    // Log.d(TAG, "[Render] 渲染: bufferIdx=${frame.bufferIndex}, pts=${frame.timestampUs}, " +
+                    Log.d(TAG, "[Render] 渲染: bufferIdx=${frame.bufferIndex}, pts=${frame.timestampUs}, " +
-//                            "当前outputFrameQueue=${outputFrameQueue.size}")
+                           "当前outputFrameQueue=${outputFrameQueue.size}")
                 } else {
-//                    Log.w(TAG, "[Render] 渲染空转，无帧可渲染，当前outputFrameQueue=${outputFrameQueue.size}")
+                   Log.w(TAG, "[Render] 渲染空转，无帧可渲染，当前outputFrameQueue=${outputFrameQueue.size}")
                 }
             } catch (e: Exception) {
                 Log.e(TAG, "[RenderTask] Exception", e)
@@ -275,10 +323,10 @@ class VideoDecoder(
         refIFrameSeq: Int?
     ): Boolean {
         if (!running || mediaCodec == null) return false
-        if (!frameSeqSet.add(frameSeq)) {
+        // if (!frameSeqSet.add(frameSeq)) {
-            Log.w(TAG, "[decodeFrame] 丢弃重复帧: type=$frameType, seq=$frameSeq, refI=$refIFrameSeq, ts=$timestamp")
+        //     Log.w(TAG, "[decodeFrame] 丢弃重复帧: type=$frameType, seq=$frameSeq, refI=$refIFrameSeq, ts=$timestamp")
-            return false // 防止重复帧
+        //     return false // 防止重复帧
-        }
+        // }
         // 2. 初始化起点
         if (timestampBaseMs == null) {
             synchronized(this) {