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eliminating exception use

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This commit is contained in:
Glenn Maynard
2004-11-30 08:20:57 +00:00
parent b6eba6ac8d
commit a5ba0427d4
1 changed files with 32 additions and 31 deletions
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stepmania/src/RageSurface_Save_BMP.cpp
+32 -31
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@@ -5,25 +5,26 @@
#include "RageUtil.h"
#include "RageFile.h"
struct FatalError: public RageException { FatalError(const CString &str): RageException(str) { } };
static void WriteBytes( RageFile &f, const void *buf, int size )
static void WriteBytes( RageFile &f, CString &sError, const void *buf, int size )
{
if( sError.size() != 0 )
return;
int ret = f.Write( buf, size );
if( ret == -1 )
throw FatalError( f.GetError() );
sError = f.GetError();
}
static void write_le16( RageFile &f, uint16_t val )
static void write_le16( RageFile &f, CString &sError, uint16_t val )
{
val = Swap16LE( val );
WriteBytes( f, &val, sizeof(uint16_t) );
WriteBytes( f, sError, &val, sizeof(uint16_t) );
}
static void write_le32( RageFile &f, uint32_t val )
static void write_le32( RageFile &f, CString &sError, uint32_t val )
{
val = Swap32LE( val );
WriteBytes( f, &val, sizeof(uint32_t) );
WriteBytes( f, sError, &val, sizeof(uint32_t) );
}
bool RageSurface_Save_BMP( RageSurface *surface, RageFile &f )
@@ -34,45 +35,45 @@ bool RageSurface_Save_BMP( RageSurface *surface, RageFile &f )
Swap24LE( 0xFF0000 ), Swap24LE( 0x00FF00 ), Swap24LE( 0x0000FF ), 0 );
RageSurfaceUtils::CopySurface( surface, converted_surface );
try {
CString sError;
int iFilePitch = converted_surface->pitch;
iFilePitch = (iFilePitch+3) & ~3; // round up a multiple of 4
int iDataSize = converted_surface->h * iFilePitch;
const int iHeaderSize = 0x36;
WriteBytes( f, "BM", 2 );
write_le32( f, iHeaderSize+iDataSize ); // size (offset 0x2)
write_le32( f, 0 ); // reserved (offset 0x6)
write_le32( f, iHeaderSize ); // bitmap offset (offset 0xA)
write_le32( f, 0x28 ); // header size (offset 0xE)
write_le32( f, surface->w ); // width (offset 0x14)
write_le32( f, surface->h ); // height (offset 0x18)
write_le16( f, 1 ); // planes (offset 0x1A)
write_le16( f, (uint16_t) converted_surface->fmt.BytesPerPixel*8 ); // bpp (offset 0x1C)
write_le32( f, 0 ); // compression (offset 0x1E)
write_le32( f, iDataSize ); // bitmap size (offset 0x22)
write_le32( f, 0 ); // horiz resolution (offset 0x26)
write_le32( f, 0 ); // vert resolution (offset 0x2A)
write_le32( f, 0 ); // colors (offset 0x2E)
write_le32( f, 0 ); // important colors (offset 0x32)
WriteBytes( f, sError, "BM", 2 );
write_le32( f, sError, iHeaderSize+iDataSize ); // size (offset 0x2)
write_le32( f, sError, 0 ); // reserved (offset 0x6)
write_le32( f, sError, iHeaderSize ); // bitmap offset (offset 0xA)
write_le32( f, sError, 0x28 ); // header size (offset 0xE)
write_le32( f, sError, surface->w ); // width (offset 0x14)
write_le32( f, sError, surface->h ); // height (offset 0x18)
write_le16( f, sError, 1 ); // planes (offset 0x1A)
write_le16( f, sError, (uint16_t) converted_surface->fmt.BytesPerPixel*8 ); // bpp (offset 0x1C)
write_le32( f, sError, 0 ); // compression (offset 0x1E)
write_le32( f, sError, iDataSize ); // bitmap size (offset 0x22)
write_le32( f, sError, 0 ); // horiz resolution (offset 0x26)
write_le32( f, sError, 0 ); // vert resolution (offset 0x2A)
write_le32( f, sError, 0 ); // colors (offset 0x2E)
write_le32( f, sError, 0 ); // important colors (offset 0x32)
for( int y = converted_surface->h-1; y >= 0; --y )
{
const uint8_t *pRow = converted_surface->pixels + converted_surface->pitch*y;
WriteBytes( f, pRow, converted_surface->pitch );
WriteBytes( f, sError, pRow, converted_surface->pitch );
/* Pad */
/* Pad the row to the pitch. */
uint8_t padding[4] = { 0,0,0,0 };
WriteBytes( f, padding, iFilePitch-converted_surface->pitch );
WriteBytes( f, sError, padding, iFilePitch-converted_surface->pitch );
}
} catch(...) {
delete converted_surface;
return false;
}
delete converted_surface;
if( sError.size() != 0 )
return false;
if( f.Flush() == -1 )
return false;