diff options
Diffstat (limited to '3dc/win95/awBmpLd.cpp')
| -rw-r--r-- | 3dc/win95/awBmpLd.cpp | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/3dc/win95/awBmpLd.cpp b/3dc/win95/awBmpLd.cpp deleted file mode 100644 index 375e1d7..0000000 --- a/3dc/win95/awBmpLd.cpp +++ /dev/null @@ -1,192 +0,0 @@ -#include "advwin32.h" -#ifndef DB_LEVEL -#define DB_LEVEL 4 -#endif -#include "db.h" - -#include "awTexLd.hpp" - -// BMP Loader - -class AwBmpLoader : public AwTl::TypicalTexFileLoader -{ - protected: - virtual void LoadHeaderInfo(MediaMedium * pMedium); - virtual AwTl::Colour * GetPalette(); - virtual bool AreRowsReversed(); - virtual void LoadNextRow(AwTl::PtrUnion pRow); - - WORD bmp_bitdepth; - DWORD bmp_offset; - DWORD bmp_headsize; - - unsigned bmp_filepitchpad; - unsigned bmp_bitmask; - - MediaMedium * m_pMedium; -}; - -void AwBmpLoader::LoadHeaderInfo(MediaMedium * pMedium) -{ - m_pMedium = pMedium; // store for later - - db_log4("\tLoading a BMP file"); - - pMedium->MovePos(+10); // 2 bytes BM (magic) and 4 bytes bmp_filesize and 4 bytes reserved - - MediaRead(pMedium,&bmp_offset); - MediaRead(pMedium,&bmp_headsize); - // 12 for OS/2 1.x 40 for Windows, 64 for OS/2 2.x - if (12 != bmp_headsize && 40 != bmp_headsize && 64 != bmp_headsize) - { - awTlLastErr = AW_TLE_BADFILEFORMAT; - db_logf3(("AwCreateTexture(): ERROR: BMP_headersize (%u) is not a recognized BMP format",bmp_headsize)); - } - #if DB_LEVEL >= 4 - switch (bmp_headsize) - { - case 12: - db_log4("\tBMP format is OS/2 1.x"); - break; - case 40: - db_log4("\tBMP format is Windows 3.x"); - break; - case 64: - db_log4("\tBMP format is OS/2 2.x"); - } - #endif - if (bmp_headsize >= 40) - { - DWORD width, height; - MediaRead(pMedium,&width); - MediaRead(pMedium,&height); - m_nWidth = width; - m_nHeight = height; - } - else - { - WORD width, height; - MediaRead(pMedium,&width); - MediaRead(pMedium,&height); - m_nWidth = width; - m_nHeight = height; - } - // next WORD is planes and should == 1 - WORD bmp_planes = 0; // ALEX: added in initialization to prevent compiler warnings - MediaRead(pMedium,&bmp_planes); - if (1!=bmp_planes) - { - awTlLastErr = AW_TLE_BADFILEDATA; - db_log3("AwCreateTexture(): ERROR: BMP_planes should be 1"); - } - MediaRead(pMedium,&bmp_bitdepth); - db_logf4(("\tBMP_bitdepth is %hd",bmp_bitdepth)); - if (1!=bmp_bitdepth && 2!=bmp_bitdepth && 4!=bmp_bitdepth && 8!=bmp_bitdepth && 24!=bmp_bitdepth) - { - awTlLastErr = AW_TLE_BADFILEDATA; - db_logf3(("AwCreateTexture(): ERROR: BMP_bitdepth (%u) should be 1,2,4,8 or 24",bmp_bitdepth)); - } - if (bmp_headsize >= 40) - { - // next DWORD is compression, not supported so only accept 0 - DWORD compression = 0; - MediaRead(pMedium,&compression); - if (compression) - { - db_log3("AwCreateTexture(): ERROR: Cannont read compressed BMP files"); - awTlLastErr = AW_TLE_BADFILEFORMAT; - } - // DWORD bmp_size - ignored, 2xDWORDS ignored - pMedium->MovePos(+12); - DWORD palette_size = 0; // ALEX: added in initialization to prevent compiler warnings - MediaRead(pMedium,&palette_size); - m_nPaletteSize = palette_size; - // skip to the start of the palette if there would be one - pMedium->MovePos(bmp_headsize-36); - } - else - { - m_nPaletteSize = 0; - } - bmp_offset -= (bmp_headsize+14); - if (!m_nPaletteSize && bmp_bitdepth<=8) - m_nPaletteSize = 1<<bmp_bitdepth; - if (m_nPaletteSize) - bmp_offset -= bmp_headsize >= 40 ? m_nPaletteSize*4 : m_nPaletteSize*3; - - db_logf4(("\tBMP_palettesize is %u",m_nPaletteSize)); - bmp_filepitchpad = (~(m_nWidth*bmp_bitdepth-1))/8 & 3; - db_logf4(("\tBMP has %u bytes padding per row",bmp_filepitchpad)); - - bmp_bitmask = (1<<bmp_bitdepth)-1; -} - -AwTl::Colour * AwBmpLoader::GetPalette() -{ - db_assert1(m_nPaletteSize); - db_assert1(m_pPalette); - - if (m_nPaletteSize > 256) - { - awTlLastErr = AW_TLE_BADFILEDATA; - db_log3("AwCreateTexture(): ERROR: BMP_palettesize is too large"); - } - else - { - AwTl::Colour * pmP = m_pPalette; - for (unsigned pc = m_nPaletteSize; pc; --pc,++pmP) - { - MediaRead(m_pMedium,&pmP->b); - MediaRead(m_pMedium,&pmP->g); - MediaRead(m_pMedium,&pmP->r); - if (bmp_headsize >= 40) m_pMedium->MovePos(+1); - } - } - // skip to the start of the pixel data - m_pMedium->MovePos(bmp_offset); - - return m_pPalette; -} - -bool AwBmpLoader::AreRowsReversed() -{ - return true; -} - -void AwBmpLoader::LoadNextRow(AwTl::PtrUnion pRow) -{ - if (m_nPaletteSize) - { - unsigned shift = 0; - BYTE byte = 0; // Not needed. - - for (unsigned colcount = m_nWidth; colcount; --colcount) - { - if (!shift) - { - shift = 8; - MediaRead(m_pMedium, &byte); - } - shift -= bmp_bitdepth; - *pRow.byteP++ = static_cast<BYTE>(byte>>shift & bmp_bitmask); - } - } - else - { - for (unsigned colcount = m_nWidth; colcount; --colcount) - { - MediaRead(m_pMedium,&pRow.colourP->b); - MediaRead(m_pMedium,&pRow.colourP->g); - MediaRead(m_pMedium,&pRow.colourP->r); - ++pRow.colourP; - } - } - m_pMedium->MovePos(bmp_filepitchpad); -} - -#ifdef _MSC_VER - // VC5.0 tries to compile out code that is in a library - // and it thinks isn't being used - #line 186 -#endif -AWTEXLD_IMPLEMENT_DYNCREATE("BM",AwBmpLoader) |