sandy
/
PL286
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1 Commit
1 Branch
0 Tags
18 GiB
Branch: master
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'master'
${ noResults }
PL286/external/opencv/otherlibs/highgui/grfmt_bmp.cpp

551 lines
18 KiB
Raw Permalink Blame History

/*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;
}