From 985e3847e0861bb39dfc277d8fb1afebf3190c89 Mon Sep 17 00:00:00 2001
From: Nicolay Korslund <nicolayk@met.no>
Date: Tue, 22 Dec 2009 13:22:32 +0100
Subject: [PATCH] Added audiere File client. NOT TESTED.

---
 stream/imp_client/audiere_file.cpp | 39 ++++++++++++++++++++++++++++++
 stream/imp_client/audiere_file.h   | 35 +++++++++++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 stream/imp_client/audiere_file.cpp
 create mode 100644 stream/imp_client/audiere_file.h

diff --git a/stream/imp_client/audiere_file.cpp b/stream/imp_client/audiere_file.cpp
new file mode 100644
index 000000000..ea8142eb4
--- /dev/null
+++ b/stream/imp_client/audiere_file.cpp
@@ -0,0 +1,39 @@
+#include "audiere_file.h"
+
+using namespace audiere;
+using namespace Mangle::Stream;
+
+bool AudiereFile::seek(int pos, SeekMode mode)
+{
+  assert(inp->isSeekable);
+  assert(inp->hasPosition);
+
+  if(mode == BEGIN)
+    {
+      // Absolute position
+      inp->seek(pos);
+      return inp->tell() == pos;
+    }
+  if(mode == CURRENT)
+    {
+      // Current position
+      int cpos = inp->tell();
+
+      // Seek to a elative position
+      inp->seek(cpos + pos);
+      return inp->tell() == (pos+cpos);
+    }
+  if(mode == END)
+    {
+      // Seeking from the end. This requires that we're able to get
+      // the entire size of the file. The pos also has to be
+      // non-positive.
+      assert(inp->hasSize);
+      assert(pos <= 0);
+
+      size_t epos = inp->size();
+      inp->seek(epos + pos);
+      return inp->tell() == (epos+pos);
+    }
+  assert(0 && "invalid seek mode");
+}
diff --git a/stream/imp_client/audiere_file.h b/stream/imp_client/audiere_file.h
new file mode 100644
index 000000000..201a7629a
--- /dev/null
+++ b/stream/imp_client/audiere_file.h
@@ -0,0 +1,35 @@
+#ifndef MANGLE_STREAM_AUDIERECLIENT_H
+#define MANGLE_STREAM_AUDIERECLIENT_H
+
+#include <audiere.h>
+#include <assert.h>
+#include "iwrapper.h"
+
+namespace Mangle {
+namespace Stream {
+
+/** @brief An Audiere::File that wraps a Mangle::Stream input.
+
+    This lets Audiere read sound files from any generic archive or
+    file manager that supports Mangle streams.
+ */
+class AudiereFile : public audiere::File, _IWrapper
+{
+ public:
+  AudiereFile(InputStream *inp, bool autoDel=false)
+    : _IWrapper(inp, autoDel) {}
+
+  /// Read 'count' bytes, return bytes successfully read
+  int read(void *buf, int count)
+    { return inp->read(buf,count); }
+
+  /// Seek, relative to specified seek mode. Returns true if successful.
+  bool seek(int pos, audiere::SeekMode mode);
+
+  /// Get current position
+  int tell()
+    { assert(inp->hasPosition); return inp->tell(); }
+};
+
+}} // namespaces
+#endif