input/rewind: move code to class ProxyInputStream

1 files changed, 97 insertions, 0 deletions

diff --git a/src/input/ProxyInputStream.cxx b/src/input/ProxyInputStream.cxx
new file mode 100644
index 000000000..7b6e9f937
--- /dev/null
+++ b/src/input/ProxyInputStream.cxx
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "ProxyInputStream.hxx"
+#include "tag/Tag.hxx"
+
+#include <assert.h>
+
+ProxyInputStream::ProxyInputStream(InputStream *_input)
+	:InputStream(_input->GetURI(), _input->mutex, _input->cond),
+	 input(*_input) {}
+
+ProxyInputStream::~ProxyInputStream()
+{
+	delete &input;
+}
+
+void
+ProxyInputStream::CopyAttributes()
+{
+	if (input.IsReady()) {
+		if (!IsReady()) {
+			if (input.HasMimeType())
+				SetMimeType(input.GetMimeType());
+
+			size = input.GetSize();
+			seekable = input.IsSeekable();
+			SetReady();
+		}
+
+		offset = input.GetOffset();
+	}
+}
+
+bool
+ProxyInputStream::Check(Error &error)
+{
+	return input.Check(error);
+}
+
+void
+ProxyInputStream::Update()
+{
+	input.Update();
+	CopyAttributes();
+}
+
+bool
+ProxyInputStream::Seek(offset_type new_offset, int whence, Error &error)
+{
+	bool success = input.Seek(new_offset, whence, error);
+	CopyAttributes();
+	return success;
+}
+
+bool
+ProxyInputStream::IsEOF()
+{
+	return input.IsEOF();
+}
+
+Tag *
+ProxyInputStream::ReadTag()
+{
+	return input.ReadTag();
+}
+
+bool
+ProxyInputStream::IsAvailable()
+{
+	return input.IsAvailable();
+}
+
+size_t
+ProxyInputStream::Read(void *ptr, size_t read_size, Error &error)
+{
+	size_t nbytes = input.Read(ptr, read_size, error);
+	CopyAttributes();
+	return nbytes;
+}