Jason Felds
107 lines
3.8 KiB
C++
107 lines
3.8 KiB
C++
#include "global.h"
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#include "RageSurface_Save_BMP.h"
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#include "RageSurface.h"
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#include "RageSurfaceUtils.h"
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#include "RageUtil.h"
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#include "RageFile.h"
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static void WriteBytes( RageFile &f, RString &sError, const void *buf, int size )
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{
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if( sError.size() != 0 )
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return;
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int ret = f.Write( buf, size );
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if( ret == -1 )
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sError = f.GetError();
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}
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static void write_le16( RageFile &f, RString &sError, uint16_t val )
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{
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val = Swap16LE( val );
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WriteBytes( f, sError, &val, sizeof(uint16_t) );
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}
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static void write_le32( RageFile &f, RString &sError, uint32_t val )
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{
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val = Swap32LE( val );
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WriteBytes( f, sError, &val, sizeof(uint32_t) );
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}
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bool RageSurfaceUtils::SaveBMP( RageSurface *surface, RageFile &f )
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{
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/* Convert the surface to 24bpp. */
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RageSurface *converted_surface;
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converted_surface = CreateSurface( surface->w, surface->h, 24,
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Swap24LE( 0xFF0000 ), Swap24LE( 0x00FF00 ), Swap24LE( 0x0000FF ), 0 );
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RageSurfaceUtils::CopySurface( surface, converted_surface );
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RString sError;
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int iFilePitch = converted_surface->pitch;
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iFilePitch = (iFilePitch+3) & ~3; // round up a multiple of 4
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int iDataSize = converted_surface->h * iFilePitch;
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const int iHeaderSize = 0x36;
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WriteBytes( f, sError, "BM", 2 );
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write_le32( f, sError, iHeaderSize+iDataSize ); // size (offset 0x2)
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write_le32( f, sError, 0 ); // reserved (offset 0x6)
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write_le32( f, sError, iHeaderSize ); // bitmap offset (offset 0xA)
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write_le32( f, sError, 0x28 ); // header size (offset 0xE)
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write_le32( f, sError, surface->w ); // width (offset 0x14)
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write_le32( f, sError, surface->h ); // height (offset 0x18)
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write_le16( f, sError, 1 ); // planes (offset 0x1A)
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write_le16( f, sError, (uint16_t) converted_surface->fmt.BytesPerPixel*8 ); // bpp (offset 0x1C)
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write_le32( f, sError, 0 ); // compression (offset 0x1E)
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write_le32( f, sError, iDataSize ); // bitmap size (offset 0x22)
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write_le32( f, sError, 0 ); // horiz resolution (offset 0x26)
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write_le32( f, sError, 0 ); // vert resolution (offset 0x2A)
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write_le32( f, sError, 0 ); // colors (offset 0x2E)
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write_le32( f, sError, 0 ); // important colors (offset 0x32)
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for( int y = converted_surface->h-1; y >= 0; --y )
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{
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const uint8_t *pRow = converted_surface->pixels + converted_surface->pitch*y;
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WriteBytes( f, sError, pRow, converted_surface->pitch );
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/* Pad the row to the pitch. */
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uint8_t padding[4] = { 0,0,0,0 };
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WriteBytes( f, sError, padding, iFilePitch-converted_surface->pitch );
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}
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delete converted_surface;
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if( sError.size() != 0 )
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return false;
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if( f.Flush() == -1 )
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return false;
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return true;
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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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