+++ /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_sunras.h"
-
-static const char* fmtSignSunRas = "\x59\xA6\x6A\x95";
-
-// Sun Raster filter factory
-
-GrFmtSunRaster::GrFmtSunRaster()
-{
- m_sign_len = 4;
- m_signature = fmtSignSunRas;
- m_description = "Sun raster files (*.sr;*.ras)";
-}
-
-
-GrFmtSunRaster::~GrFmtSunRaster()
-{
-}
-
-
-GrFmtReader* GrFmtSunRaster::NewReader( const char* filename )
-{
- return new GrFmtSunRasterReader( filename );
-}
-
-
-GrFmtWriter* GrFmtSunRaster::NewWriter( const char* filename )
-{
- return new GrFmtSunRasterWriter( filename );
-}
-
-
-/************************ Sun Raster reader *****************************/
-
-GrFmtSunRasterReader::GrFmtSunRasterReader( const char* filename ) : GrFmtReader( filename )
-{
- m_offset = -1;
-}
-
-
-GrFmtSunRasterReader::~GrFmtSunRasterReader()
-{
-}
-
-
-void GrFmtSunRasterReader::Close()
-{
- m_strm.Close();
-}
-
-
-bool GrFmtSunRasterReader::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( 4 );
- m_width = m_strm.GetDWord();
- m_height = m_strm.GetDWord();
- m_bpp = m_strm.GetDWord();
- int palSize = 3*(1 << m_bpp);
-
- m_strm.Skip( 4 );
- m_type = (SunRasType)m_strm.GetDWord();
- m_maptype = (SunRasMapType)m_strm.GetDWord();
- m_maplength = m_strm.GetDWord();
-
- if( m_width > 0 && m_height > 0 &&
- (m_bpp == 1 || m_bpp == 8 || m_bpp == 24 || m_bpp == 32) &&
- (m_type == RAS_OLD || m_type == RAS_STANDARD ||
- (m_type == RAS_BYTE_ENCODED && m_bpp == 8) || m_type == RAS_FORMAT_RGB) &&
- (m_maptype == RMT_NONE && m_maplength == 0 ||
- m_maptype == RMT_EQUAL_RGB && m_maplength <= palSize && m_bpp <= 8))
- {
- memset( m_palette, 0, sizeof(m_palette));
-
- if( m_maplength != 0 )
- {
- int readed;
- uchar buffer[256*3];
-
- m_strm.GetBytes( buffer, m_maplength, &readed );
- if( readed == m_maplength )
- {
- int i;
- palSize = m_maplength/3;
-
- for( i = 0; i < palSize; i++ )
- {
- m_palette[i].b = buffer[i + 2*palSize];
- m_palette[i].g = buffer[i + palSize];
- m_palette[i].r = buffer[i];
- m_palette[i].a = 0;
- }
-
- m_iscolor = IsColorPalette( m_palette, m_bpp );
- m_offset = m_strm.GetPos();
-
- assert( m_offset == 32 + m_maplength );
- result = true;
- }
- }
- else
- {
- m_iscolor = m_bpp > 8;
-
- if( !m_iscolor )
- FillGrayPalette( m_palette, m_bpp );
-
- m_offset = m_strm.GetPos();
-
- assert( m_offset == 32 + m_maplength );
- result = true;
- }
- }
- }
-
- if( !result )
- {
- m_offset = -1;
- m_width = m_height = -1;
- m_strm.Close();
- }
- return result;
-}
-
-
-bool GrFmtSunRasterReader::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 + 7)/8 + 1) & -2;
- int nch = color ? 3 : 1;
- int width3 = m_width*nch;
- int y;
-
- if( m_offset < 0 || !m_strm.IsOpened())
- return false;
-
- if( src_pitch+32 > buffer_size )
- src = new uchar[src_pitch+32];
-
- if( m_width*3 + 32 > buffer_size )
- bgr = new uchar[m_width*3 + 32];
-
- if( !color && m_maptype == RMT_EQUAL_RGB )
- CvtPaletteToGray( m_palette, gray_palette, 1 << m_bpp );
-
- if( setjmp( m_strm.JmpBuf()) == 0 )
- {
- m_strm.SetPos( m_offset );
-
- switch( m_bpp )
- {
- /************************* 1 BPP ************************/
- case 1:
- if( m_type != RAS_BYTE_ENCODED )
- {
- for( y = 0; y < m_height; y++, data += step )
- {
- m_strm.GetBytes( src, src_pitch );
- if( color )
- FillColorRow1( data, src, m_width, m_palette );
- else
- FillGrayRow1( data, src, m_width, gray_palette );
- }
- result = true;
- }
- else
- {
- uchar* line_end = src + (m_width*m_bpp + 7)/8;
- uchar* tsrc = src;
- y = 0;
-
- for(;;)
- {
- int max_count = (int)(line_end - tsrc);
- int code = 0, len = 0, len1 = 0;
-
- do
- {
- code = m_strm.GetByte();
- if( code == 0x80 )
- {
- len = m_strm.GetByte();
- if( len != 0 ) break;
- }
- tsrc[len1] = (uchar)code;
- }
- while( ++len1 < max_count );
-
- tsrc += len1;
-
- if( len > 0 ) // encoded mode
- {
- ++len;
- code = m_strm.GetByte();
- if( len > line_end - tsrc )
- {
- assert(0);
- goto bad_decoding_1bpp;
- }
-
- memset( tsrc, code, len );
- tsrc += len;
- }
-
- if( tsrc >= line_end )
- {
- tsrc = src;
- if( color )
- FillColorRow1( data, src, m_width, m_palette );
- else
- FillGrayRow1( data, src, m_width, gray_palette );
- data += step;
- if( ++y >= m_height ) break;
- }
- }
- result = true;
-bad_decoding_1bpp:
- ;
- }
- break;
- /************************* 8 BPP ************************/
- case 8:
- if( m_type != RAS_BYTE_ENCODED )
- {
- 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 // RLE-encoded
- {
- uchar* line_end = data + width3;
- y = 0;
-
- for(;;)
- {
- int max_count = (int)(line_end - data);
- int code = 0, len = 0, len1;
- uchar* tsrc = src;
-
- do
- {
- code = m_strm.GetByte();
- if( code == 0x80 )
- {
- len = m_strm.GetByte();
- if( len != 0 ) break;
- }
- *tsrc++ = (uchar)code;
- }
- while( (max_count -= nch) > 0 );
-
- len1 = (int)(tsrc - src);
-
- if( len1 > 0 )
- {
- if( color )
- FillColorRow8( data, src, len1, m_palette );
- else
- FillGrayRow8( data, src, len1, gray_palette );
- data += len1*nch;
- }
-
- if( len > 0 ) // encoded mode
- {
- len = (len + 1)*nch;
- code = m_strm.GetByte();
-
- 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] );
- if( y >= m_height )
- break;
- }
-
- if( data == line_end )
- {
- if( m_strm.GetByte() != 0 )
- goto bad_decoding_end;
- line_end += step;
- data = line_end - width3;
- if( ++y >= m_height ) break;
- }
- }
-
- result = true;
-bad_decoding_end:
- ;
- }
- break;
- /************************* 24 BPP ************************/
- case 24:
- for( y = 0; y < m_height; y++, data += step )
- {
- m_strm.GetBytes( color ? data : bgr, src_pitch );
-
- if( color )
- {
- if( m_type == RAS_FORMAT_RGB )
- icvCvt_RGB2BGR_8u_C3R( data, 0, data, 0, cvSize(m_width,1) );
- }
- else
- {
- icvCvt_BGR2Gray_8u_C3C1R( bgr, 0, data, 0, cvSize(m_width,1),
- m_type == RAS_FORMAT_RGB ? 2 : 0 );
- }
- }
- result = true;
- break;
- /************************* 32 BPP ************************/
- case 32:
- for( y = 0; y < m_height; y++, data += step )
- {
- /* hack: a0 b0 g0 r0 a1 b1 g1 r1 ... are written to src + 3,
- so when we look at src + 4, we see b0 g0 r0 x b1 g1 g1 x ... */
- m_strm.GetBytes( src + 3, src_pitch );
-
- if( color )
- icvCvt_BGRA2BGR_8u_C4C3R( src + 4, 0, data, 0, cvSize(m_width,1),
- m_type == RAS_FORMAT_RGB ? 2 : 0 );
- else
- icvCvt_BGRA2Gray_8u_C4C1R( src + 4, 0, data, 0, cvSize(m_width,1),
- m_type == RAS_FORMAT_RGB ? 2 : 0 );
- }
- result = true;
- break;
- default:
- assert(0);
- }
- }
-
- if( src != buffer ) delete[] src;
- if( bgr != bgr_buffer ) delete[] bgr;
-
- return result;
-}
-
-
-//////////////////////////////////////////////////////////////////////////////////////////
-
-GrFmtSunRasterWriter::GrFmtSunRasterWriter( const char* filename ) : GrFmtWriter( filename )
-{
-}
-
-
-GrFmtSunRasterWriter::~GrFmtSunRasterWriter()
-{
-}
-
-
-bool GrFmtSunRasterWriter::WriteImage( const uchar* data, int step,
- int width, int height, int /*depth*/, int channels )
-{
- bool result = false;
- int fileStep = (width*channels + 1) & -2;
- int y;
-
- assert( data && width > 0 && height > 0 && step >= fileStep);
-
- if( m_strm.Open( m_filename ) )
- {
- m_strm.PutBytes( fmtSignSunRas, (int)strlen(fmtSignSunRas) );
- m_strm.PutDWord( width );
- m_strm.PutDWord( height );
- m_strm.PutDWord( channels*8 );
- m_strm.PutDWord( fileStep*height );
- m_strm.PutDWord( RAS_STANDARD );
- m_strm.PutDWord( RMT_NONE );
- m_strm.PutDWord( 0 );
-
- for( y = 0; y < height; y++, data += step )
- m_strm.PutBytes( data, fileStep );
-
- m_strm.Close();
- result = true;
- }
- return result;
-}
-
projects / opencv / blobdiff