+++ /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_base.h"
-#include "bitstrm.h"
-
-
-GrFmtReader::GrFmtReader( const char* filename )
-{
- strncpy( m_filename, filename, sizeof(m_filename) - 1 );
- m_filename[sizeof(m_filename)-1] = '\0';
- m_width = m_height = 0;
- m_iscolor = false;
- m_bit_depth = 8;
- m_native_depth = false;
- m_isfloat = false;
-}
-
-
-GrFmtReader::~GrFmtReader()
-{
- Close();
-}
-
-
-void GrFmtReader::Close()
-{
- m_width = m_height = 0;
- m_iscolor = false;
-}
-
-
-GrFmtWriter::GrFmtWriter( const char* filename )
-{
- strncpy( m_filename, filename, sizeof(m_filename) - 1 );
- m_filename[sizeof(m_filename)-1] = '\0';
-}
-
-
-bool GrFmtWriter::IsFormatSupported( int depth )
-{
- return depth == IPL_DEPTH_8U;
-}
-
-
-GrFmtFilterFactory::GrFmtFilterFactory()
-{
- m_description = m_signature = 0;
- m_sign_len = 0;
-}
-
-
-bool GrFmtFilterFactory::CheckFile( const char* filename )
-{
- FILE* f = 0;
- char signature[4096];
- int sign_len = 0;
- int cur_sign_len = GetSignatureLength();
-
- if( !filename ) return false;
-
- assert( cur_sign_len <= (int)sizeof( signature ) );
- f = fopen( filename, "rb" );
-
- if( f )
- {
- sign_len = (int)fread( signature, 1, cur_sign_len, f );
- fclose( f );
-
- if( cur_sign_len <= sign_len && CheckSignature( signature ) )
- return true;
- }
-
- return false;
-}
-
-
-bool GrFmtFilterFactory::CheckSignature( const char* signature )
-{
- return m_sign_len > 0 && signature != 0 &&
- memcmp( signature, m_signature, m_sign_len ) == 0;
-}
-
-
-static int GetExtensionLength( const char* buffer )
-{
- int len = 0;
-
- if( buffer )
- {
- const char* ext = strchr( buffer, '.');
- if( ext++ )
- while( isalnum(ext[len]) && len < _MAX_PATH )
- len++;
- }
-
- return len;
-}
-
-
-bool GrFmtFilterFactory::CheckExtension( const char* format )
-{
- const char* descr = 0;
- int len = 0;
-
- if( !format || !m_description )
- return false;
-
- // find the right-most extension of the passed format string
- for(;;)
- {
- const char* ext = strchr( format + 1, '.' );
- if( !ext ) break;
- format = ext;
- }
-
- len = GetExtensionLength( format );
-
- if( format[0] != '.' || len == 0 )
- return false;
-
- descr = strchr( m_description, '(' );
-
- while( descr )
- {
- descr = strchr( descr + 1, '.' );
- int i, len2 = GetExtensionLength( descr );
-
- if( len2 == 0 )
- break;
-
- if( len2 == len )
- {
- for( i = 0; i < len; i++ )
- {
- int c1 = tolower(format[i+1]);
- int c2 = tolower(descr[i+1]);
-
- if( c1 != c2 )
- break;
- }
- if( i == len )
- return true;
- }
- }
-
- return false;
-}
-
-
-
-///////////////////// GrFmtFilterList //////////////////////////
-
-GrFmtFactoriesList::GrFmtFactoriesList()
-{
- m_factories = 0;
- RemoveAll();
-}
-
-
-GrFmtFactoriesList::~GrFmtFactoriesList()
-{
- RemoveAll();
-}
-
-
-void GrFmtFactoriesList::RemoveAll()
-{
- if( m_factories )
- {
- for( int i = 0; i < m_curFactories; i++ ) delete m_factories[i];
- delete[] m_factories;
- }
- m_factories = 0;
- m_maxFactories = m_curFactories = 0;
-}
-
-
-bool GrFmtFactoriesList::AddFactory( GrFmtFilterFactory* factory )
-{
- assert( factory != 0 );
- if( m_curFactories == m_maxFactories )
- {
- // reallocate the factorys pointers storage
- int newMaxFactories = 2*m_maxFactories;
- if( newMaxFactories < 16 ) newMaxFactories = 16;
-
- GrFmtFilterFactory** newFactories = new GrFmtFilterFactory*[newMaxFactories];
-
- for( int i = 0; i < m_curFactories; i++ ) newFactories[i] = m_factories[i];
-
- delete[] m_factories;
- m_factories = newFactories;
- m_maxFactories = newMaxFactories;
- }
-
- m_factories[m_curFactories++] = factory;
- return true;
-}
-
-
-ListPosition GrFmtFactoriesList::GetFirstFactoryPos()
-{
- return (ListPosition)m_factories;
-}
-
-
-GrFmtFilterFactory* GrFmtFactoriesList::GetNextFactory( ListPosition& pos )
-{
- GrFmtFilterFactory* factory = 0;
- GrFmtFilterFactory** temp = (GrFmtFilterFactory**)pos;
-
- assert( temp == 0 || (m_factories <= temp && temp < m_factories + m_curFactories));
- if( temp )
- {
- factory = *temp++;
- pos = (ListPosition)(temp < m_factories + m_curFactories ? temp : 0);
- }
- return factory;
-}
-
-
-GrFmtReader* GrFmtFactoriesList::FindReader( const char* filename )
-{
- if( !filename ) return 0;
-
- GrFmtReader* reader = 0;
- ListPosition pos = GetFirstFactoryPos();
-
- while( pos )
- {
- GrFmtFilterFactory* tempFactory = GetNextFactory( pos );
- if( tempFactory->CheckFile( filename ) )
- {
- reader = tempFactory->NewReader( filename );
- break;
- }
- }
-
- return reader;
-}
-
-
-GrFmtWriter* GrFmtFactoriesList::FindWriter( const char* filename )
-{
- GrFmtWriter* writer = 0;
- ListPosition pos = GetFirstFactoryPos();
-
- if( !filename ) return 0;
-
- while( pos )
- {
- GrFmtFilterFactory* tempFactory = GetNextFactory(pos);
- if( tempFactory->CheckExtension( filename ))
- {
- writer = tempFactory->NewWriter( filename );
- break;
- }
- }
-
- return writer;
-}
-
-/* End of file. */
-
projects / opencv / blobdiff