for #515, use SrsAutoFreeA to free the array.

@@ -148,7 +148,7 @@ int SrsDynamicHttpConn::proxy(ISrsHttpResponseWriter* w, ISrsHttpMessage* r, std
     srs_trace("flv: proxy %s to %s", r->uri().c_str(), output.c_str());
     
     char* buffer = new char[SRS_HTTP_FLV_STREAM_BUFFER];
-    SrsAutoFree(char, buffer);
+    SrsAutoFreeA(char, buffer);
     
     ISrsHttpResponseReader* rr = r->body_reader();
     SrsHttpFileReader reader(rr);

@@ -240,7 +240,7 @@ int SrsFlvSegment::write_metadata(SrsSharedPtrMessage* metadata)
     
     int size = name->total_size() + obj->total_size();
     char* payload = new char[size];
-    SrsAutoFree(char, payload);
+    SrsAutoFreeA(char, payload);
 
     // 11B flv header, 3B object EOF, 8B number value, 1B number flag.
     duration_offset = fs->tellg() + size + 11 - SrsAmf0Size::object_eof() - SrsAmf0Size::number();
@@ -355,7 +355,7 @@ int SrsFlvSegment::update_flv_metadata()
 
     // buffer to write the size.
     char* buf = new char[SrsAmf0Size::number()];
-    SrsAutoFree(char, buf);
+    SrsAutoFreeA(char, buf);
 
     SrsStream stream;
     if ((ret = stream.initialize(buf, SrsAmf0Size::number())) != ERROR_SUCCESS) {

@@ -482,7 +482,7 @@ int SrsHds::flush_bootstrap()
     int size = 1024*100;
 
     char *start_abst = new char[1024*100];
-    SrsAutoFree(char, start_abst);
+    SrsAutoFreeA(char, start_abst);
 
     int size_abst = 0;
     char *start_asrt = NULL;

@@ -734,7 +734,7 @@ int SrsHttpMessage::body_read_all(string& body)
     
     // cache to read.
     char* buf = new char[SRS_HTTP_READ_CACHE_BYTES];
-    SrsAutoFree(char, buf);
+    SrsAutoFreeA(char, buf);
     
     // whatever, read util EOF.
     while (!_body->eof()) {

@@ -380,7 +380,7 @@ int SrsHttpHooks::on_hls_notify(int cid, std::string url, SrsRequest* req, std::
     
     int nb_buf = srs_min(nb_notify, SRS_HTTP_READ_BUFFER);
     char* buf = new char[nb_buf];
-    SrsAutoFree(char, buf);
+    SrsAutoFreeA(char, buf);
     
     int nb_read = 0;
     ISrsHttpResponseReader* br = msg->body_reader();

@@ -116,7 +116,7 @@ int SrsVodStream::serve_flv_stream(ISrsHttpResponseWriter* w, ISrsHttpMessage* r
         }
     }
     sh_data = new char[sh_size];
-    SrsAutoFree(char, sh_data);
+    SrsAutoFreeA(char, sh_data);
     if ((ret = fs.read(sh_data, sh_size, NULL)) != ERROR_SUCCESS) {
         return ret;
     }

@@ -199,7 +199,7 @@ int SrsMpegtsOverUdp::on_udp_bytes(string host, int port, char* buf, int nb_buf)
     buffer->erase(buffer->length());
     int nb_fbuf = fr.filesize();
     char* fbuf = new char[nb_fbuf];
-    SrsAutoFree(char, fbuf);
+    SrsAutoFreeA(char, fbuf);
     if ((ret = fr.read(fbuf, nb_fbuf, NULL)) != ERROR_SUCCESS) {
         return ret;
     }

@@ -31,28 +31,41 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_core.hpp>
 
 /**
-* auto free the instance in the current scope, for instance, MyClass* ptr,
-* which is a ptr and this class will:
-*       1. free the ptr.
-*       2. set ptr to NULL.
-* Usage:
-*       MyClass* po = new MyClass();
-*       // ...... use po
-*       SrsAutoFree(MyClass, po);
-*/
+ * auto free the instance in the current scope, for instance, MyClass* ptr,
+ * which is a ptr and this class will:
+ *       1. free the ptr.
+ *       2. set ptr to NULL.
+ *
+ * Usage:
+ *       MyClass* po = new MyClass();
+ *       // ...... use po
+ *       SrsAutoFree(MyClass, po);
+ *
+ * Usage for array:
+ *      MyClass** pa = new MyClass*[size];
+ *      // ....... use pa
+ *      SrsAutoFreeA(MyClass*, pa);
+ *
+ * @remark the MyClass can be basic type, for instance, SrsAutoFreeA(char, pstr),
+ *      where the char* pstr = new char[size].
+ */
 #define SrsAutoFree(className, instance) \
-    impl__SrsAutoFree<className> _auto_free_##instance(&instance)
+impl__SrsAutoFree<className> _auto_free_##instance(&instance, false)
+#define SrsAutoFreeA(className, instance) \
+impl__SrsAutoFree<className> _auto_free_array_##instance(&instance, true)
 template<class T>
 class impl__SrsAutoFree
 {
 private:
     T** ptr;
+    bool is_array;
 public:
     /**
-    * auto delete the ptr.
-    */
-    impl__SrsAutoFree(T** p) {
+     * auto delete the ptr.
+     */
+    impl__SrsAutoFree(T** p, bool array) {
         ptr = p;
+        is_array = array;
     }
     
     virtual ~impl__SrsAutoFree() {
@@ -60,7 +73,11 @@ public:
             return;
         }
         
-        delete *ptr;
+        if (is_array) {
+            delete[] *ptr;
+        } else {
+            delete *ptr;
+        }
         
         *ptr = NULL;
     }

@@ -914,7 +914,7 @@ int SrsAvcAacCodec::avc_demux_sps()
     // decode the rbsp from sps.
     // rbsp[ i ] a raw byte sequence payload is specified as an ordered sequence of bytes.
     int8_t* rbsp = new int8_t[sequenceParameterSetLength];
-    SrsAutoFree(int8_t, rbsp);
+    SrsAutoFreeA(int8_t, rbsp);
     
     int nb_rbsp = 0;
     while (!stream.empty()) {

@@ -387,7 +387,7 @@ int SrsTsContext::encode_pat_pmt(SrsFileWriter* writer, int16_t vpid, SrsTsStrea
         SrsAutoFree(SrsTsPacket, pkt);
 
         char* buf = new char[SRS_TS_PACKET_SIZE];
-        SrsAutoFree(char, buf);
+        SrsAutoFreeA(char, buf);
 
         // set the left bytes with 0xFF.
         int nb_buf = pkt->size();
@@ -412,7 +412,7 @@ int SrsTsContext::encode_pat_pmt(SrsFileWriter* writer, int16_t vpid, SrsTsStrea
         SrsAutoFree(SrsTsPacket, pkt);
 
         char* buf = new char[SRS_TS_PACKET_SIZE];
-        SrsAutoFree(char, buf);
+        SrsAutoFreeA(char, buf);
 
         // set the left bytes with 0xFF.
         int nb_buf = pkt->size();
@@ -485,7 +485,7 @@ int SrsTsContext::encode_pes(SrsFileWriter* writer, SrsTsMessage* msg, int16_t p
         SrsAutoFree(SrsTsPacket, pkt);
 
         char* buf = new char[SRS_TS_PACKET_SIZE];
-        SrsAutoFree(char, buf);
+        SrsAutoFreeA(char, buf);
 
         // set the left bytes with 0xFF.
         int nb_buf = pkt->size();

@@ -157,7 +157,7 @@ int SrsRawH264Stream::mux_sequence_header(string sps, string pps, u_int32_t dts,
         + 3 + (int)sps.length() 
         + 3 + (int)pps.length();
     char* packet = new char[nb_packet];
-    SrsAutoFree(char, packet);
+    SrsAutoFreeA(char, packet);
 
     // use stream to generate the h264 packet.
     SrsStream stream;
@@ -236,7 +236,7 @@ int SrsRawH264Stream::mux_ipb_frame(char* frame, int nb_frame, string& ibp)
     //      NALUnit
     int nb_packet = 4 + nb_frame;
     char* packet = new char[nb_packet];
-    SrsAutoFree(char, packet);
+    SrsAutoFreeA(char, packet);
     
     // use stream to generate the h264 packet.
     SrsStream stream;

@@ -487,7 +487,7 @@ namespace _srs_internal
         }
         
         srs_assert(c1_digest != NULL);
-        SrsAutoFree(char, c1_digest);
+        SrsAutoFreeA(char, c1_digest);
         
         memcpy(digest.digest, c1_digest, 32);
         
@@ -506,7 +506,7 @@ namespace _srs_internal
         }
         
         srs_assert(c1_digest != NULL);
-        SrsAutoFree(char, c1_digest);
+        SrsAutoFreeA(char, c1_digest);
         
         is_valid = srs_bytes_equals(digest.digest, c1_digest, 32);
         
@@ -546,7 +546,7 @@ namespace _srs_internal
         srs_verbose("calc s1 digest success.");
         
         srs_assert(s1_digest != NULL);
-        SrsAutoFree(char, s1_digest);
+        SrsAutoFreeA(char, s1_digest);
         
         memcpy(digest.digest, s1_digest, 32);
         srs_verbose("copy s1 key success.");
@@ -566,7 +566,7 @@ namespace _srs_internal
         }
         
         srs_assert(s1_digest != NULL);
-        SrsAutoFree(char, s1_digest);
+        SrsAutoFreeA(char, s1_digest);
         
         is_valid = srs_bytes_equals(digest.digest, s1_digest, 32);
         
@@ -585,7 +585,7 @@ namespace _srs_internal
         * @return a new allocated bytes, user must free it.
         */
         char* c1s1_joined_bytes = new char[1536 -32];
-        SrsAutoFree(char, c1s1_joined_bytes);
+        SrsAutoFreeA(char, c1s1_joined_bytes);
         if ((ret = copy_to(owner, c1s1_joined_bytes, 1536 - 32, false)) != ERROR_SUCCESS) {
             return ret;
         }
@@ -613,7 +613,7 @@ namespace _srs_internal
         * @return a new allocated bytes, user must free it.
         */
         char* c1s1_joined_bytes = new char[1536 -32];
-        SrsAutoFree(char, c1s1_joined_bytes);
+        SrsAutoFreeA(char, c1s1_joined_bytes);
         if ((ret = copy_to(owner, c1s1_joined_bytes, 1536 - 32, false)) != ERROR_SUCCESS) {
             return ret;
         }

@@ -548,7 +548,7 @@ int SrsRtspSdp::parse_fmtp_attribute(string attr)
                 }
 
                 char* tmp_sh = new char[item_value.length()];
-                SrsAutoFree(char, tmp_sh);
+                SrsAutoFreeA(char, tmp_sh);
                 int nb_tmp_sh = ff_hex_to_data((u_int8_t*)tmp_sh, item_value.c_str());
                 srs_assert(nb_tmp_sh > 0);
                 audio_sh.append(tmp_sh, nb_tmp_sh);
@@ -603,7 +603,7 @@ string SrsRtspSdp::base64_decode(string value)
 
     int nb_output = (int)(value.length() * 2);
     u_int8_t* output = new u_int8_t[nb_output];
-    SrsAutoFree(u_int8_t, output);
+    SrsAutoFreeA(u_int8_t, output);
 
     int ret = srs_av_base64_decode(output, (char*)value.c_str(), nb_output);
     if (ret <= 0) {