RageSurfaceUtils::OpenResult RageSurface_Load_JPEG( const RString &sPath, RageSurface *&ret, bool bHeaderOnly, RString &error )
{
RageFile f;
if( !f.Open( sPath ) )
{
error = f.GetError();
return RageSurfaceUtils::OPEN_FATAL_ERROR;
}
char errorbuf[1024];
ret = RageSurface_Load_JPEG( &f, sPath, errorbuf );
if( ret == NULL )
{
error = errorbuf;
return RageSurfaceUtils::OPEN_UNKNOWN_FILE_FORMAT; // XXX
}
return RageSurfaceUtils::OPEN_OK;
}
static RageSurface *TryOpenFile( RString sPath, bool bHeaderOnly, RString &error, RString format, bool &bKeepTrying )
{
RageSurface *ret = NULL;
RageSurfaceUtils::OpenResult result;
if( !format.CompareNoCase("png") )
result = RageSurface_Load_PNG( sPath, ret, bHeaderOnly, error );
else if( !format.CompareNoCase("gif") )
result = RageSurface_Load_GIF( sPath, ret, bHeaderOnly, error );
else if( !format.CompareNoCase("jpg") || !format.CompareNoCase("jpeg") )
result = RageSurface_Load_JPEG( sPath, ret, bHeaderOnly, error );
else if( !format.CompareNoCase("bmp") )
result = RageSurface_Load_BMP( sPath, ret, bHeaderOnly, error );
else
{
error = "Unsupported format";
bKeepTrying = true;
return NULL;
}
if( result == RageSurfaceUtils::OPEN_OK )
{
ASSERT( ret != NULL );
return ret;
}
LOG->Trace( "Format %s failed: %s", format.c_str(), error.c_str() );
/*
* The file failed to open, or failed to read. This indicates a problem that will
* affect all readers, so don't waste time trying more readers. (OPEN_IO_ERROR)
*
* Errors fall in two categories:
* OPEN_UNKNOWN_FILE_FORMAT: Data was successfully read from the file, but it's the
* wrong file format. The error message always looks like "unknown file format" or
* "Not Vorbis data"; ignore it so we always give a consistent error message, and
* continue trying other file formats.
*
* OPEN_FATAL_ERROR: Either the file was opened successfully and appears to be the
* correct format, but a fatal format-specific error was encountered that will probably
* not be fixed by using a different reader (for example, an Ogg file that doesn't
* actually contain any audio streams); or the file failed to open or read ("I/O
* error", "permission denied"), in which case all other readers will probably fail,
* too. The returned error is used, and no other formats will be tried.
*/
bKeepTrying = (result != RageSurfaceUtils::OPEN_FATAL_ERROR);
switch( result )
{
case RageSurfaceUtils::OPEN_UNKNOWN_FILE_FORMAT:
bKeepTrying = true;
error = "Unknown file format";
break;
case RageSurfaceUtils::OPEN_FATAL_ERROR:
/* The file matched, but failed to load. We know it's this type of data;
* don't bother trying the other file types. */
bKeepTrying = false;
break;
default: break;
}
return NULL;
}