move buffer to kernel. extract ISrsReader for buffer

@@ -134,7 +134,7 @@ MODULE_ID="KERNEL"
 MODULE_DEPENDS=("CORE") 
 ModuleLibIncs=(${SRS_OBJS})
 MODULE_FILES=("srs_kernel_error" "srs_kernel_log" "srs_kernel_reload" "srs_kernel_config" 
-        "srs_kernel_stream")
+        "srs_kernel_stream" "srs_kernel_buffer")
 MODULE_DIR="src/kernel" . auto/modules.sh
 KERNEL_OBJS="${MODULE_OBJS[@]}"
 #
@@ -144,7 +144,7 @@ MODULE_DEPENDS=("CORE" "KERNEL")
 ModuleLibIncs=(${LibSTRoot} ${LibHttpParserRoot} ${LibSSLRoot} ${SRS_OBJS})
 MODULE_FILES=("srs_core_server" 
          "srs_core_conn" "srs_core_client" 
-        "srs_core_rtmp" "srs_core_socket" "srs_core_buffer"
+        "srs_core_rtmp" "srs_core_socket" 
         "srs_core_protocol" "srs_core_amf0"
          "srs_core_source" "srs_core_codec"
         "srs_core_handshake" "srs_core_pithy_print"

@@ -27,7 +27,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_core_amf0.hpp>
 #include <srs_kernel_error.hpp>
 #include <srs_core_socket.hpp>
-#include <srs_core_buffer.hpp>
+#include <srs_kernel_buffer.hpp>
 #include <srs_kernel_stream.hpp>
 #include <srs_core_autofree.hpp>
 

@@ -31,12 +31,13 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_core.hpp>
 
 #include <srs_core_st.hpp>
+#include <srs_kernel_buffer.hpp>
 
 /**
 * the socket provides TCP socket over st,
 * that is, the sync socket mechanism.
 */
-class SrsSocket
+class SrsSocket : public ISrsReader
 {
 private:
 	int64_t recv_timeout;

@@ -21,14 +21,21 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
-#include <srs_core_buffer.hpp>
+#include <srs_kernel_buffer.hpp>
 
 #include <srs_kernel_error.hpp>
-#include <srs_core_socket.hpp>
 #include <srs_kernel_log.hpp>
 
 #define SOCKET_READ_SIZE 4096
 
+ISrsReader::ISrsReader()
+{
+}
+
+ISrsReader::~ISrsReader()
+{
+}
+
 SrsBuffer::SrsBuffer()
 {
 }
@@ -57,7 +64,7 @@ void SrsBuffer::append(char* bytes, int size)
 	data.insert(data.end(), bytes, bytes + size);
 }
 
-int SrsBuffer::ensure_buffer_bytes(SrsSocket* skt, int required_size)
+int SrsBuffer::ensure_buffer_bytes(ISrsReader* skt, int required_size)
 {
 	int ret = ERROR_SUCCESS;
 

@@ -21,18 +21,25 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
-#ifndef SRS_CORE_BUFFER_HPP
-#define SRS_CORE_BUFFER_HPP
+#ifndef SRS_KERNEL_BUFFER_HPP
+#define SRS_KERNEL_BUFFER_HPP
 
 /*
-#include <srs_core_buffer.hpp>
+#include <srs_kernel_buffer.hpp>
 */
 
 #include <srs_core.hpp>
 
 #include <vector>
 
-class SrsSocket;
+class ISrsReader
+{
+public:
+	ISrsReader();
+	virtual ~ISrsReader();
+public:
+    virtual int read(const void* buf, size_t size, ssize_t* nread) = 0;
+};
 
 /**
 * the buffer provices bytes cache for protocol. generally, 
@@ -53,7 +60,7 @@ public:
 private:
 	virtual void append(char* bytes, int size);
 public:
-	virtual int ensure_buffer_bytes(SrsSocket* skt, int required_size);
+	virtual int ensure_buffer_bytes(ISrsReader* skt, int required_size);
 };
 
 #endif
\ No newline at end of file

@@ -10,6 +10,8 @@ file
     ..\core\srs_core_autofree.hpp,
     ..\core\srs_core_autofree.cpp,
     kernel readonly separator,
+    ..\kernel\srs_kernel_buffer.hpp,
+    ..\kernel\srs_kernel_buffer.cpp,
     ..\kernel\srs_kernel_config.hpp,
     ..\kernel\srs_kernel_config.cpp,
     ..\kernel\srs_kernel_error.hpp,
@@ -25,8 +27,6 @@ file
     ..\app\srs_core_amf0.cpp,
     ..\app\srs_core_bandwidth.hpp,
     ..\app\srs_core_bandwidth.cpp,
-    ..\app\srs_core_buffer.hpp,
-    ..\app\srs_core_buffer.cpp,
     ..\app\srs_core_client.hpp,
     ..\app\srs_core_client.cpp,
     ..\app\srs_core_codec.hpp,