mirror of
https://github.com/alliedmodders/hl2sdk.git
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108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
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//===== Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ======//
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//
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// Purpose:
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//
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// $Header: $
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// $NoKeywords: $
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//===========================================================================//
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#ifndef BITMAP_H
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#define BITMAP_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "bitmap/imageformat.h"
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//-----------------------------------------------------------------------------
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// Forward declarations
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//-----------------------------------------------------------------------------
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class CUtlBuffer;
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//-----------------------------------------------------------------------------
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// A Bitmap
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//-----------------------------------------------------------------------------
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struct Bitmap_t
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{
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Bitmap_t();
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~Bitmap_t();
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void Init( int nWidth, int nHeight, ImageFormat imageFormat );
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unsigned char *GetPixel( int x, int y );
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int m_nWidth;
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int m_nHeight;
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ImageFormat m_ImageFormat;
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unsigned char *m_pBits;
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};
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inline Bitmap_t::Bitmap_t()
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{
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m_nWidth = 0;
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m_nHeight = 0;
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m_ImageFormat = IMAGE_FORMAT_UNKNOWN;
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m_pBits = NULL;
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}
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inline Bitmap_t::~Bitmap_t()
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{
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if ( m_pBits )
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{
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delete[] m_pBits;
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m_pBits = NULL;
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}
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}
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inline void Bitmap_t::Init( int nWidth, int nHeight, ImageFormat imageFormat )
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{
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if ( m_pBits )
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{
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delete[] m_pBits;
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m_pBits = NULL;
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}
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m_nWidth = nWidth;
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m_nHeight = nHeight;
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m_ImageFormat = imageFormat;
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m_pBits = new unsigned char[ nWidth * nHeight * ImageLoader::SizeInBytes( m_ImageFormat ) ];
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}
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inline unsigned char *Bitmap_t::GetPixel( int x, int y )
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{
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if ( !m_pBits )
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return NULL;
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int nPixelSize = ImageLoader::SizeInBytes( m_ImageFormat );
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return &m_pBits[ ( m_nWidth * y + x ) * nPixelSize ];
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}
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//-----------------------------------------------------------------------------
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// Loads a bitmap from an arbitrary file: could be a TGA, PSD, or PFM.
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// LoadBitmap autodetects which type, and returns it
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//-----------------------------------------------------------------------------
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enum BitmapFileType_t
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{
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BITMAP_FILE_TYPE_UNKNOWN = -1,
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BITMAP_FILE_TYPE_PSD = 0,
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BITMAP_FILE_TYPE_TGA,
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BITMAP_FILE_TYPE_PFM,
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};
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BitmapFileType_t LoadBitmapFile( CUtlBuffer &buf, Bitmap_t *pBitmap );
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//-----------------------------------------------------------------------------
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// PFM file loading related methods
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//-----------------------------------------------------------------------------
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bool PFMReadFileR32F( CUtlBuffer &fileBuffer, Bitmap_t &bitmap, float pfmScale );
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bool PFMReadFileRGB323232F( CUtlBuffer &fileBuffer, Bitmap_t &bitmap, float pfmScale );
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bool PFMReadFileRGBA32323232F( CUtlBuffer &fileBuffer, Bitmap_t &bitmap, float pfmScale );
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bool PFMGetInfo_AndAdvanceToTextureBits( CUtlBuffer &pfmBuffer, int &nWidth, int &nHeight, ImageFormat &imageFormat );
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#endif // BITMAP_H
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