1 files changed, 185 insertions, 0 deletions
diff --git a/libplatform/io/File.cpp b/libplatform/io/File.cpp
new file mode 100644
index 0000000..893f98c
--- /dev/null
+++ b/libplatform/io/File.cpp
@@ -0,0 +1,185 @@
+#include "libplatform/impl.h"
+
+namespace mp4v2 { namespace platform { namespace io {
+
+///////////////////////////////////////////////////////////////////////////////
+
+namespace {
+    const File::Size __maxChunkSize = 1024*1024;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+File::File( std::string name_, Mode mode_, FileProvider* provider_ )
+    : _name     ( name_ )
+    , _isOpen   ( false )
+    , _mode     ( mode_ )
+    , _size     ( 0 )
+    , _position ( 0 )
+    , _provider ( provider_ ? *provider_ : standard() )
+    , name      ( _name )
+    , isOpen    ( _isOpen )
+    , mode      ( _mode )
+    , size      ( _size )
+    , position  ( _position )
+{
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+File::~File()
+{
+    close();
+    delete &_provider;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+void
+File::setMode( Mode mode_ )
+{
+    _mode = mode_;
+}
+
+void
+File::setName( const std::string& name_ )
+{
+    _name = name_;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+bool
+File::open( std::string name_, Mode mode_ )
+{
+    if( _isOpen )
+        return true;
+
+    if( !name_.empty() )
+        setName( name_ );
+    if( mode_ != MODE_UNDEFINED )
+        setMode( mode_ );
+
+    if( _provider.open( _name, _mode ))
+        return true;
+
+    FileSystem::getFileSize( _name, _size );
+
+    _isOpen = true;
+    return false;
+}
+
+bool
+File::seek( Size pos )
+{
+    if( !_isOpen )
+        return true;
+
+    if( _provider.seek( pos ))
+        return true;
+    _position = pos;
+    return false;
+}
+
+bool
+File::read( void* buffer, Size size, Size& nin, Size maxChunkSize )
+{
+    nin = 0;
+
+    if( !_isOpen )
+        return true;
+
+    if( _provider.read( buffer, size, nin, maxChunkSize ))
+        return true;
+
+    _position += nin;
+    if( _position > _size )
+        _size = _position;
+
+    return false;
+}
+
+bool
+File::write( const void* buffer, Size size, Size& nout, Size maxChunkSize )
+{
+    nout = 0;
+
+    if( !_isOpen )
+        return true;
+
+    if( _provider.write( buffer, size, nout, maxChunkSize ))
+        return true;
+
+    _position += nout;
+    if( _position > _size )
+        _size = _position;
+
+    return false;
+}
+
+bool
+File::close()
+{
+    if( !_isOpen )
+        return false;
+    if( _provider.close() )
+        return true;
+
+    _isOpen = false;
+    return false;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+CustomFileProvider::CustomFileProvider( const MP4FileProvider& provider )
+    : _handle( NULL )
+{
+    memcpy( &_call, &provider, sizeof(MP4FileProvider) );
+}
+
+bool
+CustomFileProvider::open( std::string name, Mode mode )
+{
+    MP4FileMode fm;
+    switch( mode ) {
+        case MODE_READ:   fm = FILEMODE_READ;   break;
+        case MODE_MODIFY: fm = FILEMODE_MODIFY; break;
+        case MODE_CREATE: fm = FILEMODE_CREATE; break;
+
+        case MODE_UNDEFINED:
+        default:
+            fm = FILEMODE_UNDEFINED;
+            break;
+    }
+
+    _handle = _call.open( name.c_str(), fm );
+    return _handle == NULL;
+}
+
+bool
+CustomFileProvider::seek( Size pos )
+{
+    return _call.seek( _handle, pos );
+}
+
+bool
+CustomFileProvider::read( void* buffer, Size size, Size& nin, Size maxChunkSize )
+{
+    return _call.read( _handle, buffer, size, &nin, maxChunkSize );
+}
+
+bool
+CustomFileProvider::write( const void* buffer, Size size, Size& nout, Size maxChunkSize )
+{
+    return _call.write( _handle, buffer, size, &nout, maxChunkSize );
+}
+
+bool
+CustomFileProvider::close()
+{
+    return _call.close( _handle );
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+}}} // namespace mp4v2::platform::io