+++ /dev/null
-/*M///////////////////////////////////////////////////////////////////////////////////////
-//
-// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
-//
-// By downloading, copying, installing or using the software you agree to this license.
-// If you do not agree to this license, do not download, install,
-// copy or use the software.
-//
-//
-// Intel License Agreement
-// For Open Source Computer Vision Library
-//
-// Copyright (C) 2000, Intel Corporation, all rights reserved.
-// Third party copyrights are property of their respective owners.
-//
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
-//
-// * Redistribution's of source code must retain the above copyright notice,
-// this list of conditions and the following disclaimer.
-//
-// * Redistribution's in binary form must reproduce the above copyright notice,
-// this list of conditions and the following disclaimer in the documentation
-// and/or other materials provided with the distribution.
-//
-// * The name of Intel Corporation may not be used to endorse or promote products
-// derived from this software without specific prior written permission.
-//
-// This software is provided by the copyright holders and contributors "as is" and
-// any express or implied warranties, including, but not limited to, the implied
-// warranties of merchantability and fitness for a particular purpose are disclaimed.
-// In no event shall the Intel Corporation or contributors be liable for any direct,
-// indirect, incidental, special, exemplary, or consequential damages
-// (including, but not limited to, procurement of substitute goods or services;
-// loss of use, data, or profits; or business interruption) however caused
-// and on any theory of liability, whether in contract, strict liability,
-// or tort (including negligence or otherwise) arising in any way out of
-// the use of this software, even if advised of the possibility of such damage.
-//
-//M*/
-
-#include "_highgui.h"
-#include "grfmt_bmp.h"
-
-static const char* fmtSignBmp = "BM";
-
-GrFmtBmp::GrFmtBmp()
-{
- m_sign_len = 2;
- m_signature = fmtSignBmp;
- m_description = "Windows bitmap (*.bmp;*.dib)";
-}
-
-
-GrFmtBmp::~GrFmtBmp()
-{
-}
-
-
-GrFmtReader* GrFmtBmp::NewReader( const char* filename )
-{
- return new GrFmtBmpReader( filename );
-}
-
-
-GrFmtWriter* GrFmtBmp::NewWriter( const char* filename )
-{
- return new GrFmtBmpWriter( filename );
-}
-
-
-/************************ BMP reader *****************************/
-
-GrFmtBmpReader::GrFmtBmpReader( const char* filename ) : GrFmtReader( filename )
-{
- m_offset = -1;
-}
-
-
-GrFmtBmpReader::~GrFmtBmpReader()
-{
-}
-
-
-void GrFmtBmpReader::Close()
-{
- m_strm.Close();
- GrFmtReader::Close();
-}
-
-
-bool GrFmtBmpReader::ReadHeader()
-{
- bool result = false;
-
- assert( strlen(m_filename) != 0 );
- if( !m_strm.Open( m_filename )) return false;
-
- if( setjmp( m_strm.JmpBuf()) == 0 )
- {
- m_strm.Skip( 10 );
- m_offset = m_strm.GetDWord();
-
- int size = m_strm.GetDWord();
-
- if( size >= 36 )
- {
- m_width = m_strm.GetDWord();
- m_height = m_strm.GetDWord();
- m_bpp = m_strm.GetDWord() >> 16;
- m_rle_code = (BmpCompression)m_strm.GetDWord();
- m_strm.Skip(12);
- int clrused = m_strm.GetDWord();
- m_strm.Skip( size - 36 );
-
- if( m_width > 0 && m_height > 0 &&
- (((m_bpp == 1 || m_bpp == 4 || m_bpp == 8 ||
- m_bpp == 24 || m_bpp == 32 ) && m_rle_code == BMP_RGB) ||
- (m_bpp == 16 && (m_rle_code == BMP_RGB || m_rle_code == BMP_BITFIELDS)) ||
- (m_bpp == 4 && m_rle_code == BMP_RLE4) ||
- (m_bpp == 8 && m_rle_code == BMP_RLE8)))
- {
- m_iscolor = true;
- result = true;
-
- if( m_bpp <= 8 )
- {
- memset( m_palette, 0, sizeof(m_palette));
- m_strm.GetBytes( m_palette, (clrused == 0? 1<<m_bpp : clrused)*4 );
- m_iscolor = IsColorPalette( m_palette, m_bpp );
- }
- else if( m_bpp == 16 && m_rle_code == BMP_BITFIELDS )
- {
- int redmask = m_strm.GetDWord();
- int greenmask = m_strm.GetDWord();
- int bluemask = m_strm.GetDWord();
-
- if( bluemask == 0x1f && greenmask == 0x3e0 && redmask == 0x7c00 )
- m_bpp = 15;
- else if( bluemask == 0x1f && greenmask == 0x7e0 && redmask == 0xf800 )
- ;
- else
- result = false;
- }
- else if( m_bpp == 16 && m_rle_code == BMP_RGB )
- m_bpp = 15;
- }
- }
- else if( size == 12 )
- {
- m_width = m_strm.GetWord();
- m_height = m_strm.GetWord();
- m_bpp = m_strm.GetDWord() >> 16;
- m_rle_code = BMP_RGB;
-
- if( m_width > 0 && m_height > 0 &&
- (m_bpp == 1 || m_bpp == 4 || m_bpp == 8 ||
- m_bpp == 24 || m_bpp == 32 ))
- {
- if( m_bpp <= 8 )
- {
- uchar buffer[256*3];
- int j, clrused = 1 << m_bpp;
- m_strm.GetBytes( buffer, clrused*3 );
- for( j = 0; j < clrused; j++ )
- {
- m_palette[j].b = buffer[3*j+0];
- m_palette[j].g = buffer[3*j+1];
- m_palette[j].r = buffer[3*j+2];
- }
- }
- result = true;
- }
- }
- }
-
- if( !result )
- {
- m_offset = -1;
- m_width = m_height = -1;
- m_strm.Close();
- }
- return result;
-}
-
-
-bool GrFmtBmpReader::ReadData( uchar* data, int step, int color )
-{
- const int buffer_size = 1 << 12;
- uchar buffer[buffer_size];
- uchar bgr_buffer[buffer_size];
- uchar gray_palette[256];
- bool result = false;
- uchar* src = buffer;
- uchar* bgr = bgr_buffer;
- int src_pitch = ((m_width*(m_bpp != 15 ? m_bpp : 16) + 7)/8 + 3) & -4;
- int nch = color ? 3 : 1;
- int width3 = m_width*nch;
- int y;
-
- if( m_offset < 0 || !m_strm.IsOpened())
- return false;
-
- data += (m_height - 1)*step;
- step = -step;
-
- if( (m_bpp != 24 || !color) && src_pitch+32 > buffer_size )
- src = new uchar[src_pitch+32];
-
- if( !color )
- {
- if( m_bpp <= 8 )
- {
- CvtPaletteToGray( m_palette, gray_palette, 1 << m_bpp );
- }
- if( m_width*3 + 32 > buffer_size ) bgr = new uchar[m_width*3 + 32];
- }
-
- if( setjmp( m_strm.JmpBuf()) == 0 )
- {
- m_strm.SetPos( m_offset );
-
- switch( m_bpp )
- {
- /************************* 1 BPP ************************/
- case 1:
- for( y = 0; y < m_height; y++, data += step )
- {
- m_strm.GetBytes( src, src_pitch );
- FillColorRow1( color ? data : bgr, src, m_width, m_palette );
- if( !color )
- icvCvt_BGR2Gray_8u_C3C1R( bgr, 0, data, 0, cvSize(m_width,1) );
- }
- result = true;
- break;
-
- /************************* 4 BPP ************************/
- case 4:
- if( m_rle_code == BMP_RGB )
- {
- for( y = 0; y < m_height; y++, data += step )
- {
- m_strm.GetBytes( src, src_pitch );
- if( color )
- FillColorRow4( data, src, m_width, m_palette );
- else
- FillGrayRow4( data, src, m_width, gray_palette );
- }
- result = true;
- }
- else if( m_rle_code == BMP_RLE4 ) // rle4 compression
- {
- uchar* line_end = data + width3;
- y = 0;
-
- for(;;)
- {
- int code = m_strm.GetWord();
- int len = code & 255;
- code >>= 8;
- if( len != 0 ) // encoded mode
- {
- PaletteEntry clr[2];
- uchar gray_clr[2];
- int t = 0;
-
- clr[0] = m_palette[code >> 4];
- clr[1] = m_palette[code & 15];
- gray_clr[0] = gray_palette[code >> 4];
- gray_clr[1] = gray_palette[code & 15];
-
- uchar* end = data + len*nch;
- if( end > line_end ) goto decode_rle4_bad;
- do
- {
- if( color )
- WRITE_PIX( data, clr[t] );
- else
- *data = gray_clr[t];
- t ^= 1;
- }
- while( (data += nch) < end );
- }
- else if( code > 2 ) // absolute mode
- {
- if( data + code*nch > line_end ) goto decode_rle4_bad;
- m_strm.GetBytes( src, (((code + 1)>>1) + 1) & -2 );
- if( color )
- data = FillColorRow4( data, src, code, m_palette );
- else
- data = FillGrayRow4( data, src, code, gray_palette );
- }
- else
- {
- int x_shift3 = (int)(line_end - data);
- int y_shift = m_height - y;
-
- if( code == 2 )
- {
- x_shift3 = m_strm.GetByte()*nch;
- y_shift = m_strm.GetByte();
- }
-
- len = x_shift3 + (y_shift * width3) & ((code == 0) - 1);
-
- if( color )
- data = FillUniColor( data, line_end, step, width3,
- y, m_height, x_shift3,
- m_palette[0] );
- else
- data = FillUniGray( data, line_end, step, width3,
- y, m_height, x_shift3,
- gray_palette[0] );
-
- if( y >= m_height )
- break;
- }
- }
-
- result = true;
-decode_rle4_bad: ;
- }
- break;
-
- /************************* 8 BPP ************************/
- case 8:
- if( m_rle_code == BMP_RGB )
- {
- for( y = 0; y < m_height; y++, data += step )
- {
- m_strm.GetBytes( src, src_pitch );
- if( color )
- FillColorRow8( data, src, m_width, m_palette );
- else
- FillGrayRow8( data, src, m_width, gray_palette );
- }
- result = true;
- }
- else if( m_rle_code == BMP_RLE8 ) // rle8 compression
- {
- uchar* line_end = data + width3;
- int line_end_flag = 0;
- y = 0;
-
- for(;;)
- {
- int code = m_strm.GetWord();
- int len = code & 255;
- code >>= 8;
- if( len != 0 ) // encoded mode
- {
- int prev_y = y;
- len *= nch;
-
- if( data + len > line_end )
- goto decode_rle8_bad;
-
- if( color )
- data = FillUniColor( data, line_end, step, width3,
- y, m_height, len,
- m_palette[code] );
- else
- data = FillUniGray( data, line_end, step, width3,
- y, m_height, len,
- gray_palette[code] );
-
- line_end_flag = y - prev_y;
- }
- else if( code > 2 ) // absolute mode
- {
- int prev_y = y;
- int code3 = code*nch;
-
- if( data + code3 > line_end )
- goto decode_rle8_bad;
- m_strm.GetBytes( src, (code + 1) & -2 );
- if( color )
- data = FillColorRow8( data, src, code, m_palette );
- else
- data = FillGrayRow8( data, src, code, gray_palette );
-
- line_end_flag = y - prev_y;
- }
- else
- {
- int x_shift3 = (int)(line_end - data);
- int y_shift = m_height - y;
-
- if( code || !line_end_flag || x_shift3 < width3 )
- {
- if( code == 2 )
- {
- x_shift3 = m_strm.GetByte()*nch;
- y_shift = m_strm.GetByte();
- }
-
- x_shift3 += (y_shift * width3) & ((code == 0) - 1);
-
- if( y >= m_height )
- break;
-
- if( color )
- data = FillUniColor( data, line_end, step, width3,
- y, m_height, x_shift3,
- m_palette[0] );
- else
- data = FillUniGray( data, line_end, step, width3,
- y, m_height, x_shift3,
- gray_palette[0] );
-
- if( y >= m_height )
- break;
- }
-
- line_end_flag = 0;
- }
- }
-
- result = true;
-decode_rle8_bad: ;
- }
- break;
- /************************* 15 BPP ************************/
- case 15:
- for( y = 0; y < m_height; y++, data += step )
- {
- m_strm.GetBytes( src, src_pitch );
- if( !color )
- icvCvt_BGR5552Gray_8u_C2C1R( src, 0, data, 0, cvSize(m_width,1) );
- else
- icvCvt_BGR5552BGR_8u_C2C3R( src, 0, data, 0, cvSize(m_width,1) );
- }
- result = true;
- break;
- /************************* 16 BPP ************************/
- case 16:
- for( y = 0; y < m_height; y++, data += step )
- {
- m_strm.GetBytes( src, src_pitch );
- if( !color )
- icvCvt_BGR5652Gray_8u_C2C1R( src, 0, data, 0, cvSize(m_width,1) );
- else
- icvCvt_BGR5652BGR_8u_C2C3R( src, 0, data, 0, cvSize(m_width,1) );
- }
- result = true;
- break;
- /************************* 24 BPP ************************/
- case 24:
- for( y = 0; y < m_height; y++, data += step )
- {
- m_strm.GetBytes( color ? data : src, src_pitch );
- if( !color )
- icvCvt_BGR2Gray_8u_C3C1R( src, 0, data, 0, cvSize(m_width,1) );
- }
- result = true;
- break;
- /************************* 32 BPP ************************/
- case 32:
- for( y = 0; y < m_height; y++, data += step )
- {
- m_strm.GetBytes( src, src_pitch );
-
- if( !color )
- icvCvt_BGRA2Gray_8u_C4C1R( src, 0, data, 0, cvSize(m_width,1) );
- else
- icvCvt_BGRA2BGR_8u_C4C3R( src, 0, data, 0, cvSize(m_width,1) );
- }
- result = true;
- break;
- default:
- assert(0);
- }
- }
-
- if( src != buffer ) delete[] src;
- if( bgr != bgr_buffer ) delete[] bgr;
- return result;
-}
-
-
-//////////////////////////////////////////////////////////////////////////////////////////
-
-GrFmtBmpWriter::GrFmtBmpWriter( const char* filename ) : GrFmtWriter( filename )
-{
-}
-
-
-GrFmtBmpWriter::~GrFmtBmpWriter()
-{
-}
-
-
-bool GrFmtBmpWriter::WriteImage( const uchar* data, int step,
- int width, int height, int /*depth*/, int channels )
-{
- bool result = false;
- int fileStep = (width*channels + 3) & -4;
- uchar zeropad[] = "\0\0\0\0";
-
- assert( data && width > 0 && height > 0 && step >= fileStep );
-
- if( m_strm.Open( m_filename ) )
- {
- int bitmapHeaderSize = 40;
- int paletteSize = channels > 1 ? 0 : 1024;
- int headerSize = 14 /* fileheader */ + bitmapHeaderSize + paletteSize;
- PaletteEntry palette[256];
-
- // write signature 'BM'
- m_strm.PutBytes( fmtSignBmp, (int)strlen(fmtSignBmp) );
-
- // write file header
- m_strm.PutDWord( fileStep*height + headerSize ); // file size
- m_strm.PutDWord( 0 );
- m_strm.PutDWord( headerSize );
-
- // write bitmap header
- m_strm.PutDWord( bitmapHeaderSize );
- m_strm.PutDWord( width );
- m_strm.PutDWord( height );
- m_strm.PutWord( 1 );
- m_strm.PutWord( channels << 3 );
- m_strm.PutDWord( BMP_RGB );
- m_strm.PutDWord( 0 );
- m_strm.PutDWord( 0 );
- m_strm.PutDWord( 0 );
- m_strm.PutDWord( 0 );
- m_strm.PutDWord( 0 );
-
- if( channels == 1 )
- {
- FillGrayPalette( palette, 8 );
- m_strm.PutBytes( palette, sizeof(palette));
- }
-
- width *= channels;
- data += step*(height - 1);
- for( ; height--; data -= step )
- {
- m_strm.PutBytes( data, width );
- if( fileStep > width )
- m_strm.PutBytes( zeropad, fileStep - width );
- }
-
- m_strm.Close();
- result = true;
- }
- return result;
-}
-
-