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//========= Copyright Valve Corporation, All rights reserved. ============//
#include <stdlib.h>
#include <stdio.h>
#include "UtlBuffer.h"
#include "filesystem.h"
#include "filesystem_tools.h"
#include "tier1/strtools.h"
#include "tier0/icommandline.h"
#include "cmdlib.h"
void Usage( void )
{
printf( "Usage: splitskybox blah.pfm\n" );
exit( -1 );
}
static int ReadIntFromUtlBuffer( CUtlBuffer &buf )
{
int val = 0;
int c;
while( 1 )
{
c = buf.GetChar();
if( c >= '0' && c <= '9' )
{
val = val * 10 + ( c - '0' );
}
else
{
return val;
}
}
}
//-----------------------------------------------------------------------------
// Loads a file into a UTLBuffer
//-----------------------------------------------------------------------------
static bool LoadFile( const char *pFileName, CUtlBuffer &buf, bool bFailOnError )
{
FILE *fp = fopen( pFileName, "rb" );
if (!fp)
{
if (!bFailOnError)
return false;
Error( "Can't open: \"%s\"\n", pFileName );
}
fseek( fp, 0, SEEK_END );
int nFileLength = ftell( fp );
fseek( fp, 0, SEEK_SET );
buf.EnsureCapacity( nFileLength );
fread( buf.Base(), 1, nFileLength, fp );
fclose( fp );
buf.SeekPut( CUtlBuffer::SEEK_HEAD, nFileLength );
return true;
}
static bool PFMRead( CUtlBuffer &fileBuffer, int &nWidth, int &nHeight, float **ppImage )
{
fileBuffer.SeekGet( CUtlBuffer::SEEK_HEAD, 0 );
if( fileBuffer.GetChar() != 'P' )
{
Assert( 0 );
return false;
}
if( fileBuffer.GetChar() != 'F' )
{
Assert( 0 );
return false;
}
if( fileBuffer.GetChar() != 0xa )
{
Assert( 0 );
return false;
}
nWidth = ReadIntFromUtlBuffer( fileBuffer );
nHeight = ReadIntFromUtlBuffer( fileBuffer );
// eat crap until the next newline
while( fileBuffer.GetChar() != 0xa )
{
}
*ppImage = new float[nWidth * nHeight * 3];
int y;
for( y = nHeight-1; y >= 0; y-- )
{
fileBuffer.Get( *ppImage + nWidth * y * 3, nWidth * 3 * sizeof( float ) );
}
return true;
}
static void PFMWrite( float *pFloatImage, const char *pFilename, int width, int height )
{
printf( "filename: %s\n", pFilename );
FileHandle_t fp;
fp = g_pFullFileSystem->Open( pFilename, "wb" );
if( fp == FILESYSTEM_INVALID_HANDLE )
{
fprintf( stderr, "error opening \"%s\"\n", pFilename );
exit( -1 );
}
g_pFullFileSystem->FPrintf( fp, "PF\n%d %d\n-1.000000\n", width, height );
int i;
for( i = height-1; i >= 0; i-- )
// for( i = 0; i < height; i++ )
{
float *pRow = &pFloatImage[3 * width * i];
g_pFullFileSystem->Write( pRow, width * sizeof( float ) * 3, fp );
}
g_pFullFileSystem->Close( fp );
}
void WriteSubRect( int nSrcWidth, int nSrcHeight, const float *pSrcImage,
int nSrcOffsetX, int nSrcOffsetY, int nDstWidth, int nDstHeight,
const char *pSrcFileName, const char *pDstFileNameExtension )
{
float *pDstImage = new float[nDstWidth * nDstHeight * 3];
int x, y;
for( y = 0; y < nDstHeight; y++ )
{
for( x = 0; x < nDstWidth; x++ )
{
pDstImage[(x+(nDstWidth*y))*3+0] = pSrcImage[((nSrcOffsetX+x)+(nSrcOffsetY+y)*nSrcWidth)*3+0];
pDstImage[(x+(nDstWidth*y))*3+1] = pSrcImage[((nSrcOffsetX+x)+(nSrcOffsetY+y)*nSrcWidth)*3+1];
pDstImage[(x+(nDstWidth*y))*3+2] = pSrcImage[((nSrcOffsetX+x)+(nSrcOffsetY+y)*nSrcWidth)*3+2];
}
}
char dstFileName[MAX_PATH];
Q_strcpy( dstFileName, pSrcFileName );
Q_StripExtension( pSrcFileName, dstFileName, MAX_PATH );
Q_strcat( dstFileName, pDstFileNameExtension, sizeof(dstFileName) );
Q_strcat( dstFileName, ".pfm", sizeof(dstFileName) );
PFMWrite( pDstImage, dstFileName, nDstWidth, nDstHeight );
delete [] pDstImage;
}
int main( int argc, char **argv )
{
CommandLine()->CreateCmdLine( argc, argv );
if( argc != 2 )
{
Usage();
}
CmdLib_InitFileSystem( argv[ argc-1 ] );
CUtlBuffer srcFileData;
// Expand the path so that it can run correctly from a shortcut
char source[1024];
strcpy (source, ExpandPath(argv[1]));
LoadFile( argv[1], srcFileData, true );
float *pSrcImage = NULL;
int nSrcWidth, nSrcHeight;
if( !PFMRead( srcFileData, nSrcWidth, nSrcHeight, &pSrcImage ) )
{
printf( "Couldn't read %s\n", argv[1] );
}
int nDstWidth = nSrcWidth / 4;
int nDstHeight = nSrcHeight / 3;
Assert( nDstWidth == nDstHeight );
WriteSubRect( nSrcWidth, nSrcHeight, pSrcImage, nDstWidth * 0, nDstHeight * 1, nDstWidth, nDstHeight, argv[1], "ft" );
WriteSubRect( nSrcWidth, nSrcHeight, pSrcImage, nDstWidth * 1, nDstHeight * 1, nDstWidth, nDstHeight, argv[1], "lf" );
WriteSubRect( nSrcWidth, nSrcHeight, pSrcImage, nDstWidth * 2, nDstHeight * 1, nDstWidth, nDstHeight, argv[1], "bk" );
WriteSubRect( nSrcWidth, nSrcHeight, pSrcImage, nDstWidth * 3, nDstHeight * 1, nDstWidth, nDstHeight, argv[1], "rt" );
WriteSubRect( nSrcWidth, nSrcHeight, pSrcImage, nDstWidth * 3, nDstHeight * 0, nDstWidth, nDstHeight, argv[1], "up" );
WriteSubRect( nSrcWidth, nSrcHeight, pSrcImage, nDstWidth * 3, nDstHeight * 2, nDstWidth, nDstHeight, argv[1], "dn" );
CmdLib_Cleanup();
CmdLib_Exit( 1 );
return 0;
}
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