+++ /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"
-
-#ifdef HAVE_JASPER
-
-#include "grfmt_jpeg2000.h"
-
-// JPEG-2000 Filter Factory
-GrFmtJpeg2000::GrFmtJpeg2000()
-{
- m_sign_len = 12;
- m_signature = "\x00\x00\x00\x0cjP \r\n\x87\n";
- m_description = "JPEG-2000 files (*.jp2)";
- jas_init();
-}
-
-
-GrFmtJpeg2000::~GrFmtJpeg2000()
-{
- jas_cleanup();
-}
-
-
-GrFmtReader* GrFmtJpeg2000::NewReader( const char* filename )
-{
- return new GrFmtJpeg2000Reader( filename );
-}
-
-
-GrFmtWriter* GrFmtJpeg2000::NewWriter( const char* filename )
-{
- return new GrFmtJpeg2000Writer( filename );
-}
-
-
-/////////////////////// GrFmtJpeg2000Reader ///////////////////
-
-GrFmtJpeg2000Reader::GrFmtJpeg2000Reader( const char* filename ) : GrFmtReader( filename )
-{
- m_stream = 0;
- m_image = 0;
-}
-
-
-GrFmtJpeg2000Reader::~GrFmtJpeg2000Reader()
-{
-}
-
-
-void GrFmtJpeg2000Reader::Close()
-{
- if( m_stream )
- {
- jas_stream_close( m_stream );
- m_stream = 0;
- }
-
- if( m_image )
- {
- jas_image_destroy( m_image );
- m_image = 0;
- }
- GrFmtReader::Close();
-}
-
-
-bool GrFmtJpeg2000Reader::ReadHeader()
-{
- bool result = false;
-
- Close();
-
- m_stream = jas_stream_fopen( m_filename, "rb" );
- if( m_stream )
- {
- m_image = jas_image_decode( m_stream, -1, 0 );
- if( m_image ) {
- m_width = jas_image_width( m_image );
- m_height = jas_image_height( m_image );
-
- int cntcmpts = 0; // count the known components
- int numcmpts = jas_image_numcmpts( m_image );
- for( int i = 0; i < numcmpts; i++ )
- {
- int depth = jas_image_cmptprec( m_image, i );
- if( depth > m_bit_depth )
- m_bit_depth = depth;
- if( m_bit_depth > 8 )
- m_bit_depth = 16;
-
- if( jas_image_cmpttype( m_image, i ) > 2 )
- continue;
- cntcmpts++;
- }
-
- if( cntcmpts )
- {
- m_iscolor = (cntcmpts > 1);
-
- result = true;
- }
- }
- }
-
- if( !result )
- Close();
-
- return result;
-}
-
-
-bool GrFmtJpeg2000Reader::ReadData( uchar* data, int step, int color )
-{
- bool result = false;
-
- color = color > 0 || ( m_iscolor && color < 0 );
-
- if( m_stream && m_image )
- {
- bool convert;
- int colorspace;
- if( color )
- {
- convert = (jas_image_clrspc( m_image ) != JAS_CLRSPC_SRGB);
- colorspace = JAS_CLRSPC_SRGB;
- }
- else
- {
- convert = (jas_clrspc_fam( jas_image_clrspc( m_image ) ) != JAS_CLRSPC_FAM_GRAY);
- colorspace = JAS_CLRSPC_SGRAY; // TODO GENGRAY or SGRAY?
- }
-
- // convert to the desired colorspace
- if( convert )
- {
- jas_cmprof_t *clrprof = jas_cmprof_createfromclrspc( colorspace );
- if( clrprof )
- {
- jas_image_t *img = jas_image_chclrspc( m_image, clrprof, JAS_CMXFORM_INTENT_RELCLR );
- if( img )
- {
- jas_image_destroy( m_image );
- m_image = img;
- result = true;
- }
- else
- fprintf(stderr, "JPEG 2000 LOADER ERROR: cannot convert colorspace\n");
- jas_cmprof_destroy( clrprof );
- }
- else
- fprintf(stderr, "JPEG 2000 LOADER ERROR: unable to create colorspace\n");
- }
- else
- result = true;
-
- if( result )
- {
- int ncmpts;
- int cmptlut[3];
- if( color )
- {
- cmptlut[0] = jas_image_getcmptbytype( m_image, JAS_IMAGE_CT_RGB_B );
- cmptlut[1] = jas_image_getcmptbytype( m_image, JAS_IMAGE_CT_RGB_G );
- cmptlut[2] = jas_image_getcmptbytype( m_image, JAS_IMAGE_CT_RGB_R );
- if( cmptlut[0] < 0 || cmptlut[1] < 0 || cmptlut[0] < 0 )
- result = false;
- ncmpts = 3;
- }
- else
- {
- cmptlut[0] = jas_image_getcmptbytype( m_image, JAS_IMAGE_CT_GRAY_Y );
- if( cmptlut[0] < 0 )
- result = false;
- ncmpts = 1;
- }
-
- if( result )
- {
- for( int i = 0; i < ncmpts; i++ )
- {
- int maxval = 1 << jas_image_cmptprec( m_image, cmptlut[i] );
- int offset = jas_image_cmptsgnd( m_image, cmptlut[i] ) ? maxval / 2 : 0;
-
- int yend = jas_image_cmptbry( m_image, cmptlut[i] );
- int ystep = jas_image_cmptvstep( m_image, cmptlut[i] );
- int xend = jas_image_cmptbrx( m_image, cmptlut[i] );
- int xstep = jas_image_cmpthstep( m_image, cmptlut[i] );
-
- jas_matrix_t *buffer = jas_matrix_create( yend / ystep, xend / xstep );
- if( buffer )
- {
- if( !jas_image_readcmpt( m_image, cmptlut[i], 0, 0, xend / xstep, yend / ystep, buffer ))
- {
- if( m_bit_depth == 8 || !m_native_depth )
- result = ReadComponent8u( data + i, buffer, step, cmptlut[i], maxval, offset, ncmpts );
- else
- result = ReadComponent16u( ((unsigned short *)data) + i, buffer, step / 2, cmptlut[i], maxval, offset, ncmpts );
- if( !result )
- {
- i = ncmpts;
- result = false;
- }
- }
- jas_matrix_destroy( buffer );
- }
- }
- }
- }
- else
- fprintf(stderr, "JPEG2000 LOADER ERROR: colorspace conversion failed\n" );
- }
-
- Close();
-
- return result;
-}
-
-
-bool GrFmtJpeg2000Reader::ReadComponent8u( uchar *data, jas_matrix_t *buffer,
- int step, int cmpt,
- int maxval, int offset, int ncmpts )
-{
- int xstart = jas_image_cmpttlx( m_image, cmpt );
- int xend = jas_image_cmptbrx( m_image, cmpt );
- int xstep = jas_image_cmpthstep( m_image, cmpt );
- int xoffset = jas_image_tlx( m_image );
- int ystart = jas_image_cmpttly( m_image, cmpt );
- int yend = jas_image_cmptbry( m_image, cmpt );
- int ystep = jas_image_cmptvstep( m_image, cmpt );
- int yoffset = jas_image_tly( m_image );
- int x, y, x1, y1, j;
- int rshift = cvRound(log(maxval/256.)/log(2.));
- int lshift = MAX(0, -rshift);
- rshift = MAX(0, rshift);
- int delta = (rshift > 0 ? 1 << (rshift - 1) : 0) + offset;
-
- for( y = 0; y < yend - ystart; )
- {
- jas_seqent_t* pix_row = &jas_matrix_get( buffer, y / ystep, 0 );
- uchar* dst = data + (y - yoffset) * step - xoffset;
-
- if( xstep == 1 )
- {
- if( maxval == 256 && offset == 0 )
- for( x = 0; x < xend - xstart; x++ )
- {
- int pix = pix_row[x];
- dst[x*ncmpts] = CV_CAST_8U(pix);
- }
- else
- for( x = 0; x < xend - xstart; x++ )
- {
- int pix = ((pix_row[x] + delta) >> rshift) << lshift;
- dst[x*ncmpts] = CV_CAST_8U(pix);
- }
- }
- else if( xstep == 2 && offset == 0 )
- for( x = 0, j = 0; x < xend - xstart; x += 2, j++ )
- {
- int pix = ((pix_row[j] + delta) >> rshift) << lshift;
- dst[x*ncmpts] = dst[(x+1)*ncmpts] = CV_CAST_8U(pix);
- }
- else
- for( x = 0, j = 0; x < xend - xstart; j++ )
- {
- int pix = ((pix_row[j] + delta) >> rshift) << lshift;
- pix = CV_CAST_8U(pix);
- for( x1 = x + xstep; x < x1; x++ )
- dst[x*ncmpts] = (uchar)pix;
- }
- y1 = y + ystep;
- for( ++y; y < y1; y++, dst += step )
- for( x = 0; x < xend - xstart; x++ )
- dst[x*ncmpts + step] = dst[x*ncmpts];
- }
-
- return true;
-}
-
-
-bool GrFmtJpeg2000Reader::ReadComponent16u( unsigned short *data, jas_matrix_t *buffer,
- int step, int cmpt,
- int maxval, int offset, int ncmpts )
-{
- int xstart = jas_image_cmpttlx( m_image, cmpt );
- int xend = jas_image_cmptbrx( m_image, cmpt );
- int xstep = jas_image_cmpthstep( m_image, cmpt );
- int xoffset = jas_image_tlx( m_image );
- int ystart = jas_image_cmpttly( m_image, cmpt );
- int yend = jas_image_cmptbry( m_image, cmpt );
- int ystep = jas_image_cmptvstep( m_image, cmpt );
- int yoffset = jas_image_tly( m_image );
- int x, y, x1, y1, j;
- int rshift = cvRound(log(maxval/65536.)/log(2.));
- int lshift = MAX(0, -rshift);
- rshift = MAX(0, rshift);
- int delta = (rshift > 0 ? 1 << (rshift - 1) : 0) + offset;
-
- for( y = 0; y < yend - ystart; )
- {
- jas_seqent_t* pix_row = &jas_matrix_get( buffer, y / ystep, 0 );
- ushort* dst = data + (y - yoffset) * step - xoffset;
-
- if( xstep == 1 )
- {
- if( maxval == 65536 && offset == 0 )
- for( x = 0; x < xend - xstart; x++ )
- {
- int pix = pix_row[x];
- dst[x*ncmpts] = CV_CAST_16U(pix);
- }
- else
- for( x = 0; x < xend - xstart; x++ )
- {
- int pix = ((pix_row[x] + delta) >> rshift) << lshift;
- dst[x*ncmpts] = CV_CAST_16U(pix);
- }
- }
- else if( xstep == 2 && offset == 0 )
- for( x = 0, j = 0; x < xend - xstart; x += 2, j++ )
- {
- int pix = ((pix_row[j] + delta) >> rshift) << lshift;
- dst[x*ncmpts] = dst[(x+1)*ncmpts] = CV_CAST_16U(pix);
- }
- else
- for( x = 0, j = 0; x < xend - xstart; j++ )
- {
- int pix = ((pix_row[j] + delta) >> rshift) << lshift;
- pix = CV_CAST_16U(pix);
- for( x1 = x + xstep; x < x1; x++ )
- dst[x*ncmpts] = (ushort)pix;
- }
- y1 = y + ystep;
- for( ++y; y < y1; y++, dst += step )
- for( x = 0; x < xend - xstart; x++ )
- dst[x*ncmpts + step] = dst[x*ncmpts];
- }
-
- return true;
-}
-
-
-/////////////////////// GrFmtJpeg2000Writer ///////////////////
-
-
-GrFmtJpeg2000Writer::GrFmtJpeg2000Writer( const char* filename ) : GrFmtWriter( filename )
-{
-}
-
-
-GrFmtJpeg2000Writer::~GrFmtJpeg2000Writer()
-{
-}
-
-
-bool GrFmtJpeg2000Writer::IsFormatSupported( int depth )
-{
- return depth == IPL_DEPTH_8U || depth == IPL_DEPTH_16U;
-}
-
-
-bool GrFmtJpeg2000Writer::WriteImage( const uchar* data, int step,
- int width, int height, int depth, int channels )
-{
- if( channels > 3 || channels < 1 )
- return false;
-
- jas_image_cmptparm_t component_info[3];
- for( int i = 0; i < channels; i++ )
- {
- component_info[i].tlx = 0;
- component_info[i].tly = 0;
- component_info[i].hstep = 1;
- component_info[i].vstep = 1;
- component_info[i].width = width;
- component_info[i].height = height;
- component_info[i].prec = depth;
- component_info[i].sgnd = 0;
- }
- jas_image_t *img = jas_image_create( channels, component_info, (channels == 1) ? JAS_CLRSPC_SGRAY : JAS_CLRSPC_SRGB );
- if( !img )
- return false;
-
- if(channels == 1)
- jas_image_setcmpttype( img, 0, JAS_IMAGE_CT_GRAY_Y );
- else
- {
- jas_image_setcmpttype( img, 0, JAS_IMAGE_CT_RGB_B );
- jas_image_setcmpttype( img, 1, JAS_IMAGE_CT_RGB_G );
- jas_image_setcmpttype( img, 2, JAS_IMAGE_CT_RGB_R );
- }
-
- bool result;
- if( depth == 8 )
- result = WriteComponent8u( img, data, step, channels, width, height );
- else
- result = WriteComponent16u( img, (const unsigned short *)data, step / 2, channels, width, height );
- if( result )
- {
- jas_stream_t *stream = jas_stream_fopen( m_filename, "wb" );
- if( stream )
- {
- result = !jas_image_encode( img, stream, jas_image_strtofmt( "jp2" ), "" );
-
- jas_stream_close( stream );
- }
-
- }
- jas_image_destroy( img );
-
- return result;
-}
-
-
-bool GrFmtJpeg2000Writer::WriteComponent8u( jas_image_t *img, const uchar *data,
- int step, int ncmpts, int w, int h )
-{
- jas_matrix_t *row = jas_matrix_create( 1, w );
- if(!row)
- return false;
-
- for( int y = 0; y < h; y++, data += step )
- {
- for( int i = 0; i < ncmpts; i++ )
- {
- for( int x = 0; x < w; x++)
- jas_matrix_setv( row, x, data[x * ncmpts + i] );
- jas_image_writecmpt( img, i, 0, y, w, 1, row );
- }
- }
-
- jas_matrix_destroy( row );
-
- return true;
-}
-
-
-bool GrFmtJpeg2000Writer::WriteComponent16u( jas_image_t *img, const unsigned short *data,
- int step, int ncmpts, int w, int h )
-{
- jas_matrix_t *row = jas_matrix_create( 1, w );
- if(!row)
- return false;
-
- for( int y = 0; y < h; y++, data += step )
- {
- for( int i = 0; i < ncmpts; i++ )
- {
- for( int x = 0; x < w; x++)
- jas_matrix_setv( row, x, data[x * ncmpts + i] );
- jas_image_writecmpt( img, i, 0, y, w, 1, row );
- }
- }
-
- jas_matrix_destroy( row );
-
- return true;
-}
-
-#endif
-
-/* End of file. */
projects / opencv / blobdiff