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#include "RawMediaReader.h"
#include <limits.h>
bool IsMyExtension(const wchar_t *filename);
int RawMediaReaderService::CreateRawMediaReader(const wchar_t *filename, ifc_raw_media_reader **out_reader)
{
if (IsMyExtension(filename))
{
CGioFile *file = new CGioFile();
if (!file)
return NErr_OutOfMemory;
if (file->Open(filename, 0) != NErr_Success)
{
delete file;
return NErr_FileNotFound;
}
RawMediaReader *reader = new RawMediaReader(file);
if (!reader)
{
file->Close();
delete file;
return NErr_OutOfMemory;
}
*out_reader = reader;
return NErr_Success;
}
else
{
return NErr_False;
}
}
#define CBCLASS RawMediaReaderService
START_DISPATCH;
CB(CREATERAWMEDIAREADER, CreateRawMediaReader);
END_DISPATCH;
#undef CBCLASS
RawMediaReader::RawMediaReader(CGioFile *file) : file(file)
{}
int RawMediaReader::Read( void *buffer, size_t buffer_size, size_t *bytes_read )
{
if ( buffer_size > INT_MAX )
return NErr_BadParameter;
int file_bytes_read = 0;
int ret = file->Read( buffer, (int)buffer_size, &file_bytes_read );
if ( ret == NErr_Success )
{
*bytes_read = (size_t)file_bytes_read;
if ( !file_bytes_read && file->IsEof() )
return NErr_EndOfFile;
return NErr_Success;
}
else
return NErr_Error;
}
size_t RawMediaReader::Release()
{
file->Close();
delete file;
file = NULL;
delete this;
return 0;
}
#define CBCLASS RawMediaReader
START_DISPATCH;
CB( RELEASE, Release );
CB( RAW_READ, Read );
END_DISPATCH;
#undef CBCLASS
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