Jason Felds
143 lines
4.7 KiB
C++
143 lines
4.7 KiB
C++
#include "global.h"
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#include "RageSurface_Load.h"
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#include "RageSurface_Load_PNG.h"
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#include "RageSurface_Load_JPEG.h"
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#include "RageSurface_Load_GIF.h"
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#include "RageSurface_Load_BMP.h"
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#include "RageUtil.h"
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#include "RageFile.h"
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#include "RageLog.h"
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#include <set>
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static RageSurface *TryOpenFile( RString sPath, bool bHeaderOnly, RString &error, RString format, bool &bKeepTrying )
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{
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RageSurface *ret = NULL;
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RageSurfaceUtils::OpenResult result;
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if( !format.CompareNoCase("png") )
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result = RageSurface_Load_PNG( sPath, ret, bHeaderOnly, error );
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else if( !format.CompareNoCase("gif") )
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result = RageSurface_Load_GIF( sPath, ret, bHeaderOnly, error );
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else if( !format.CompareNoCase("jpg") )
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result = RageSurface_Load_JPEG( sPath, ret, bHeaderOnly, error );
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else if( !format.CompareNoCase("bmp") )
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result = RageSurface_Load_BMP( sPath, ret, bHeaderOnly, error );
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else
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{
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error = "Unsupported format";
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bKeepTrying = true;
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return NULL;
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}
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if( result == RageSurfaceUtils::OPEN_OK )
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{
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ASSERT( ret );
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return ret;
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}
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LOG->Trace( "Format %s failed: %s", format.c_str(), error.c_str() );
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/*
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* The file failed to open, or failed to read. This indicates a problem that will
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* affect all readers, so don't waste time trying more readers. (OPEN_IO_ERROR)
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*
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* Errors fall in two categories:
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* OPEN_UNKNOWN_FILE_FORMAT: Data was successfully read from the file, but it's the
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* wrong file format. The error message always looks like "unknown file format" or
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* "Not Vorbis data"; ignore it so we always give a consistent error message, and
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* continue trying other file formats.
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*
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* OPEN_FATAL_ERROR: Either the file was opened successfully and appears to be the
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* correct format, but a fatal format-specific error was encountered that will probably
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* not be fixed by using a different reader (for example, an Ogg file that doesn't
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* actually contain any audio streams); or the file failed to open or read ("I/O
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* error", "permission denied"), in which case all other readers will probably fail,
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* too. The returned error is used, and no other formats will be tried.
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*/
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bKeepTrying = (result != RageSurfaceUtils::OPEN_FATAL_ERROR);
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switch( result )
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{
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case RageSurfaceUtils::OPEN_UNKNOWN_FILE_FORMAT:
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bKeepTrying = true;
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error = "Unknown file format";
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break;
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case RageSurfaceUtils::OPEN_FATAL_ERROR:
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/* The file matched, but failed to load. We know it's this type of data;
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* don't bother trying the other file types. */
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bKeepTrying = false;
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break;
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}
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return NULL;
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}
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RageSurface *RageSurfaceUtils::LoadFile( const RString &sPath, RString &error, bool bHeaderOnly )
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{
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{
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RageFile TestOpen;
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if( !TestOpen.Open( sPath ) )
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{
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error = TestOpen.GetError();
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return NULL;
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}
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}
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set<RString> FileTypes;
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FileTypes.insert("png");
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FileTypes.insert("jpg");
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FileTypes.insert("gif");
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FileTypes.insert("bmp");
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RString format = GetExtension(sPath);
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format.MakeLower();
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bool bKeepTrying = true;
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/* If the extension matches a format, try that first. */
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if( FileTypes.find(format) != FileTypes.end() )
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{
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RageSurface *ret = TryOpenFile( sPath, bHeaderOnly, error, format, bKeepTrying );
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if( ret )
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return ret;
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FileTypes.erase( format );
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}
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for( set<RString>::iterator it = FileTypes.begin(); bKeepTrying && it != FileTypes.end(); ++it )
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{
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RageSurface *ret = TryOpenFile( sPath, bHeaderOnly, error, *it, bKeepTrying );
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if( ret )
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{
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LOG->UserLog( "Graphic file", sPath, "is really %s", it->c_str() );
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return ret;
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}
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}
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return NULL;
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}
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/*
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* (c) 2004 Glenn Maynard
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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