1 files changed, 109 insertions, 0 deletions
diff --git a/libplatform/io/File_posix.cpp b/libplatform/io/File_posix.cpp
new file mode 100644
index 0000000..b6fb214
--- /dev/null
+++ b/libplatform/io/File_posix.cpp
@@ -0,0 +1,109 @@
+#include "libplatform/impl.h"
+
+namespace mp4v2 { namespace platform { namespace io {
+
+///////////////////////////////////////////////////////////////////////////////
+
+class StandardFileProvider : public FileProvider
+{
+public:
+    StandardFileProvider();
+
+    bool open( std::string name, Mode mode );
+    bool seek( Size pos );
+    bool read( void* buffer, Size size, Size& nin, Size maxChunkSize );
+    bool write( const void* buffer, Size size, Size& nout, Size maxChunkSize );
+    bool close();
+
+private:
+    bool         _seekg;
+    bool         _seekp;
+    std::fstream _fstream;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+StandardFileProvider::StandardFileProvider()
+    : _seekg ( false )
+    , _seekp ( false )
+{
+}
+
+bool
+StandardFileProvider::open( std::string name, Mode mode )
+{
+    ios::openmode om = ios::binary;
+    switch( mode ) {
+        case MODE_UNDEFINED:
+        case MODE_READ:
+        default:
+            om |= ios::in;
+            _seekg = true;
+            _seekp = false;
+            break;
+
+        case MODE_MODIFY:
+            om |= ios::in | ios::out;
+            _seekg = true;
+            _seekp = true;
+            break;
+
+        case MODE_CREATE:
+            om |= ios::in | ios::out | ios::trunc;
+            _seekg = true;
+            _seekp = true;
+            break;
+    }
+
+    _fstream.open( name.c_str(), om );
+    return _fstream.fail();
+}
+
+bool
+StandardFileProvider::seek( Size pos )
+{
+    if( _seekg )
+        _fstream.seekg( pos, ios::beg );
+    if( _seekp )
+        _fstream.seekp( pos, ios::beg );
+    return _fstream.fail();
+}
+
+bool
+StandardFileProvider::read( void* buffer, Size size, Size& nin, Size maxChunkSize )
+{
+    _fstream.read( (char*)buffer, size );
+    if( _fstream.fail() )
+        return true;
+    nin = _fstream.gcount();
+    return false;
+}
+
+bool
+StandardFileProvider::write( const void* buffer, Size size, Size& nout, Size maxChunkSize )
+{
+    _fstream.write( (const char*)buffer, size );
+    if( _fstream.fail() )
+        return true;
+    nout = size;
+    return false;
+}
+
+bool
+StandardFileProvider::close()
+{
+    _fstream.close();
+    return _fstream.fail();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+FileProvider&
+FileProvider::standard()
+{
+    return *new StandardFileProvider();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+}}} // namespace mp4v2::platform::io