优化函数命名

isCfgFrame -> isConfigFrame
getAacCfg -> getConfig

src/Rtmp/FlvPlayer.cpp

@@ -62,7 +62,7 @@ bool FlvPlayer::onRecvMetadata(const AMFValue &metadata) {
 }
 
 void FlvPlayer::onRecvRtmpPacket(RtmpPacket::Ptr packet) {
-    if (!_play_result && !packet->isCfgFrame()) {
+    if (!_play_result && !packet->isConfigFrame()) {
         _play_result = true;
         onPlayResult(SockException(Err_success, "play http-flv success"));
     }

src/Rtmp/Rtmp.cpp

@@ -167,7 +167,7 @@ bool RtmpPacket::isVideoKeyFrame() const {
     return frame_type == RtmpFrameType::key_frame;
 }
 
-bool RtmpPacket::isCfgFrame() const {
+bool RtmpPacket::isConfigFrame() const {
     switch (type_id) {
         case MSG_AUDIO: {
             return (RtmpAudioCodec)getRtmpCodecId() == RtmpAudioCodec::aac && (RtmpAACPacketType)buffer[1] == RtmpAACPacketType::aac_config_header;

src/Rtmp/Rtmp.h

@@ -169,10 +169,15 @@ public:
     }
 
     void clear();
+
     // video config frame和key frame都返回true
+    // 用于gop缓存定位
     bool isVideoKeyFrame() const;
-    // aac config或h264/h265 config
-    bool isCfgFrame() const;
+
+    // aac config或h264/h265 config返回true，支持增强型rtmp
+    // 用于缓存解码配置信息
+    bool isConfigFrame() const;
+
     int getRtmpCodecId() const;
     int getAudioSampleRate() const;
     int getAudioSampleBit() const;

src/Rtmp/RtmpMediaSourceImp.cpp

@@ -54,7 +54,7 @@ void RtmpMediaSource::onWrite(RtmpPacket::Ptr pkt, bool /*= true*/) {
         default: break;
     }
 
-    if (pkt->isCfgFrame()) {
+    if (pkt->isConfigFrame()) {
         std::lock_guard<std::recursive_mutex> lock(_mtx);
         _config_frame_map[pkt->type_id] = pkt;
         if (!_ring) {

src/Rtmp/RtmpPlayer.cpp

@@ -339,7 +339,7 @@ void RtmpPlayer::onMediaData_l(RtmpPacket::Ptr chunk_data) {
         return;
     }
 
-    if (chunk_data->isCfgFrame()) {
+    if (chunk_data->isConfigFrame()) {
         //输入配置帧以便初始化完成各个track
         onRtmpPacket(chunk_data);
     } else {