--- /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 "utils.h"
+
+#define SCALE 14
+#define cR (int)(0.299*(1 << SCALE) + 0.5)
+#define cG (int)(0.587*(1 << SCALE) + 0.5)
+#define cB ((1 << SCALE) - cR - cG)
+
+void icvCvt_BGR2Gray_8u_C3C1R( const uchar* rgb, int rgb_step,
+ uchar* gray, int gray_step,
+ CvSize size, int _swap_rb )
+{
+ int i;
+ int swap_rb = _swap_rb ? 2 : 0;
+ for( ; size.height--; gray += gray_step )
+ {
+ for( i = 0; i < size.width; i++, rgb += 3 )
+ {
+ int t = descale( rgb[swap_rb]*cB + rgb[1]*cG + rgb[swap_rb^2]*cR, SCALE );
+ gray[i] = (uchar)t;
+ }
+
+ rgb += rgb_step - size.width*3;
+ }
+}
+
+
+void icvCvt_BGR2Gray_16u_C3C1R( const ushort* rgb, int rgb_step,
+ ushort* gray, int gray_step,
+ CvSize size, int _swap_rb )
+{
+ int i;
+ int swap_rb = _swap_rb ? 2 : 0;
+ for( ; size.height--; gray += gray_step )
+ {
+ for( i = 0; i < size.width; i++, rgb += 3 )
+ {
+ int t = descale( rgb[swap_rb]*cB + rgb[1]*cG + rgb[swap_rb^2]*cR, SCALE );
+ gray[i] = (ushort)t;
+ }
+
+ rgb += rgb_step - size.width*3;
+ }
+}
+
+
+void icvCvt_BGRA2Gray_8u_C4C1R( const uchar* rgba, int rgba_step,
+ uchar* gray, int gray_step,
+ CvSize size, int _swap_rb )
+{
+ int i;
+ int swap_rb = _swap_rb ? 2 : 0;
+ for( ; size.height--; gray += gray_step )
+ {
+ for( i = 0; i < size.width; i++, rgba += 4 )
+ {
+ int t = descale( rgba[swap_rb]*cB + rgba[1]*cG + rgba[swap_rb^2]*cR, SCALE );
+ gray[i] = (uchar)t;
+ }
+
+ rgba += rgba_step - size.width*4;
+ }
+}
+
+
+void icvCvt_Gray2BGR_8u_C1C3R( const uchar* gray, int gray_step,
+ uchar* bgr, int bgr_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; gray += gray_step )
+ {
+ for( i = 0; i < size.width; i++, bgr += 3 )
+ {
+ bgr[0] = bgr[1] = bgr[2] = gray[i];
+ }
+ bgr += bgr_step - size.width*3;
+ }
+}
+
+
+void icvCvt_BGRA2BGR_8u_C4C3R( const uchar* bgra, int bgra_step,
+ uchar* bgr, int bgr_step,
+ CvSize size, int _swap_rb )
+{
+ int i;
+ int swap_rb = _swap_rb ? 2 : 0;
+ for( ; size.height--; )
+ {
+ for( i = 0; i < size.width; i++, bgr += 3, bgra += 4 )
+ {
+ uchar t0 = bgra[swap_rb], t1 = bgra[1];
+ bgr[0] = t0; bgr[1] = t1;
+ t0 = bgra[swap_rb^2]; bgr[2] = t0;
+ }
+ bgr += bgr_step - size.width*3;
+ bgra += bgra_step - size.width*4;
+ }
+}
+
+
+void icvCvt_BGRA2RGBA_8u_C4R( const uchar* bgra, int bgra_step,
+ uchar* rgba, int rgba_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; )
+ {
+ for( i = 0; i < size.width; i++, bgra += 4, rgba += 4 )
+ {
+ uchar t0 = bgra[0], t1 = bgra[1];
+ uchar t2 = bgra[2], t3 = bgra[3];
+ rgba[0] = t2; rgba[1] = t1;
+ rgba[2] = t0; rgba[3] = t3;
+ }
+ bgra += bgra_step - size.width*4;
+ rgba += rgba_step - size.width*4;
+ }
+}
+
+
+void icvCvt_BGR2RGB_8u_C3R( const uchar* bgr, int bgr_step,
+ uchar* rgb, int rgb_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; )
+ {
+ for( i = 0; i < size.width; i++, bgr += 3, rgb += 3 )
+ {
+ uchar t0 = bgr[0], t1 = bgr[1], t2 = bgr[2];
+ rgb[2] = t0; rgb[1] = t1; rgb[0] = t2;
+ }
+ bgr += bgr_step - size.width*3;
+ rgb += rgb_step - size.width*3;
+ }
+}
+
+
+void icvCvt_BGR2RGB_16u_C3R( const ushort* bgr, int bgr_step,
+ ushort* rgb, int rgb_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; )
+ {
+ for( i = 0; i < size.width; i++, bgr += 3, rgb += 3 )
+ {
+ ushort t0 = bgr[0], t1 = bgr[1], t2 = bgr[2];
+ rgb[2] = t0; rgb[1] = t1; rgb[0] = t2;
+ }
+ bgr += bgr_step - size.width*3;
+ rgb += rgb_step - size.width*3;
+ }
+}
+
+
+typedef unsigned short ushort;
+
+void icvCvt_BGR5552Gray_8u_C2C1R( const uchar* bgr555, int bgr555_step,
+ uchar* gray, int gray_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; gray += gray_step, bgr555 += bgr555_step )
+ {
+ for( i = 0; i < size.width; i++ )
+ {
+ int t = descale( ((((ushort*)bgr555)[i] << 3) & 0xf8)*cB +
+ ((((ushort*)bgr555)[i] >> 2) & 0xf8)*cG +
+ ((((ushort*)bgr555)[i] >> 7) & 0xf8)*cR, SCALE );
+ gray[i] = (uchar)t;
+ }
+ }
+}
+
+
+void icvCvt_BGR5652Gray_8u_C2C1R( const uchar* bgr565, int bgr565_step,
+ uchar* gray, int gray_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; gray += gray_step, bgr565 += bgr565_step )
+ {
+ for( i = 0; i < size.width; i++ )
+ {
+ int t = descale( ((((ushort*)bgr565)[i] << 3) & 0xf8)*cB +
+ ((((ushort*)bgr565)[i] >> 3) & 0xfc)*cG +
+ ((((ushort*)bgr565)[i] >> 8) & 0xf8)*cR, SCALE );
+ gray[i] = (uchar)t;
+ }
+ }
+}
+
+
+void icvCvt_BGR5552BGR_8u_C2C3R( const uchar* bgr555, int bgr555_step,
+ uchar* bgr, int bgr_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; bgr555 += bgr555_step )
+ {
+ for( i = 0; i < size.width; i++, bgr += 3 )
+ {
+ int t0 = (((ushort*)bgr555)[i] << 3) & 0xf8;
+ int t1 = (((ushort*)bgr555)[i] >> 2) & 0xf8;
+ int t2 = (((ushort*)bgr555)[i] >> 7) & 0xf8;
+ bgr[0] = (uchar)t0; bgr[1] = (uchar)t1; bgr[2] = (uchar)t2;
+ }
+ bgr += bgr_step - size.width*3;
+ }
+}
+
+
+void icvCvt_BGR5652BGR_8u_C2C3R( const uchar* bgr565, int bgr565_step,
+ uchar* bgr, int bgr_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; bgr565 += bgr565_step )
+ {
+ for( i = 0; i < size.width; i++, bgr += 3 )
+ {
+ int t0 = (((ushort*)bgr565)[i] << 3) & 0xf8;
+ int t1 = (((ushort*)bgr565)[i] >> 3) & 0xfc;
+ int t2 = (((ushort*)bgr565)[i] >> 8) & 0xf8;
+ bgr[0] = (uchar)t0; bgr[1] = (uchar)t1; bgr[2] = (uchar)t2;
+ }
+ bgr += bgr_step - size.width*3;
+ }
+}
+
+
+void icvCvt_CMYK2BGR_8u_C4C3R( const uchar* cmyk, int cmyk_step,
+ uchar* bgr, int bgr_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; )
+ {
+ for( i = 0; i < size.width; i++, bgr += 3, cmyk += 4 )
+ {
+ int c = cmyk[0], m = cmyk[1], y = cmyk[2], k = cmyk[3];
+ c = k - ((255 - c)*k>>8);
+ m = k - ((255 - m)*k>>8);
+ y = k - ((255 - y)*k>>8);
+ bgr[2] = (uchar)c; bgr[1] = (uchar)m; bgr[0] = (uchar)y;
+ }
+ bgr += bgr_step - size.width*3;
+ cmyk += cmyk_step - size.width*4;
+ }
+}
+
+
+void icvCvt_CMYK2Gray_8u_C4C1R( const uchar* cmyk, int cmyk_step,
+ uchar* gray, int gray_step, CvSize size )
+{
+ int i;
+ for( ; size.height--; )
+ {
+ for( i = 0; i < size.width; i++, cmyk += 4 )
+ {
+ int c = cmyk[0], m = cmyk[1], y = cmyk[2], k = cmyk[3];
+ c = k - ((255 - c)*k>>8);
+ m = k - ((255 - m)*k>>8);
+ y = k - ((255 - y)*k>>8);
+ int t = descale( y*cB + m*cG + c*cR, SCALE );
+ gray[i] = (uchar)t;
+ }
+ gray += gray_step;
+ cmyk += cmyk_step - size.width*4;
+ }
+}
+
+
+void CvtPaletteToGray( const PaletteEntry* palette, uchar* grayPalette, int entries )
+{
+ int i;
+ for( i = 0; i < entries; i++ )
+ {
+ icvCvt_BGR2Gray_8u_C3C1R( (uchar*)(palette + i), 0, grayPalette + i, 0, cvSize(1,1) );
+ }
+}
+
+
+void FillGrayPalette( PaletteEntry* palette, int bpp, bool negative )
+{
+ int i, length = 1 << bpp;
+ int xor_mask = negative ? 255 : 0;
+
+ for( i = 0; i < length; i++ )
+ {
+ int val = (i * 255/(length - 1)) ^ xor_mask;
+ palette[i].b = palette[i].g = palette[i].r = (uchar)val;
+ palette[i].a = 0;
+ }
+}
+
+
+bool IsColorPalette( PaletteEntry* palette, int bpp )
+{
+ int i, length = 1 << bpp;
+
+ for( i = 0; i < length; i++ )
+ {
+ if( palette[i].b != palette[i].g ||
+ palette[i].b != palette[i].r )
+ return true;
+ }
+
+ return false;
+}
+
+
+uchar* FillUniColor( uchar* data, uchar*& line_end,
+ int step, int width3,
+ int& y, int height,
+ int count3, PaletteEntry clr )
+{
+ do
+ {
+ uchar* end = data + count3;
+
+ if( end > line_end )
+ end = line_end;
+
+ count3 -= (int)(end - data);
+
+ for( ; data < end; data += 3 )
+ {
+ WRITE_PIX( data, clr );
+ }
+
+ if( data >= line_end )
+ {
+ line_end += step;
+ data = line_end - width3;
+ if( ++y >= height ) break;
+ }
+ }
+ while( count3 > 0 );
+
+ return data;
+}
+
+
+uchar* FillUniGray( uchar* data, uchar*& line_end,
+ int step, int width,
+ int& y, int height,
+ int count, uchar clr )
+{
+ do
+ {
+ uchar* end = data + count;
+
+ if( end > line_end )
+ end = line_end;
+
+ count -= (int)(end - data);
+
+ for( ; data < end; data++ )
+ {
+ *data = clr;
+ }
+
+ if( data >= line_end )
+ {
+ line_end += step;
+ data = line_end - width;
+ if( ++y >= height ) break;
+ }
+ }
+ while( count > 0 );
+
+ return data;
+}
+
+
+uchar* FillColorRow8( uchar* data, uchar* indices, int len, PaletteEntry* palette )
+{
+ uchar* end = data + len*3;
+ while( (data += 3) < end )
+ {
+ *((PaletteEntry*)(data-3)) = palette[*indices++];
+ }
+ PaletteEntry clr = palette[indices[0]];
+ WRITE_PIX( data - 3, clr );
+ return data;
+}
+
+
+uchar* FillGrayRow8( uchar* data, uchar* indices, int len, uchar* palette )
+{
+ int i;
+ for( i = 0; i < len; i++ )
+ {
+ data[i] = palette[indices[i]];
+ }
+ return data + len;
+}
+
+
+uchar* FillColorRow4( uchar* data, uchar* indices, int len, PaletteEntry* palette )
+{
+ uchar* end = data + len*3;
+
+ while( (data += 6) < end )
+ {
+ int idx = *indices++;
+ *((PaletteEntry*)(data-6)) = palette[idx >> 4];
+ *((PaletteEntry*)(data-3)) = palette[idx & 15];
+ }
+
+ int idx = indices[0];
+ PaletteEntry clr = palette[idx >> 4];
+ WRITE_PIX( data - 6, clr );
+
+ if( data == end )
+ {
+ clr = palette[idx & 15];
+ WRITE_PIX( data - 3, clr );
+ }
+ return end;
+}
+
+
+uchar* FillGrayRow4( uchar* data, uchar* indices, int len, uchar* palette )
+{
+ uchar* end = data + len;
+ while( (data += 2) < end )
+ {
+ int idx = *indices++;
+ data[-2] = palette[idx >> 4];
+ data[-1] = palette[idx & 15];
+ }
+
+ int idx = indices[0];
+ uchar clr = palette[idx >> 4];
+ data[-2] = clr;
+
+ if( data == end )
+ {
+ clr = palette[idx & 15];
+ data[-1] = clr;
+ }
+ return end;
+}
+
+
+uchar* FillColorRow1( uchar* data, uchar* indices, int len, PaletteEntry* palette )
+{
+ uchar* end = data + len*3;
+
+ while( (data += 24) < end )
+ {
+ int idx = *indices++;
+ *((PaletteEntry*)(data - 24)) = palette[(idx & 128) != 0];
+ *((PaletteEntry*)(data - 21)) = palette[(idx & 64) != 0];
+ *((PaletteEntry*)(data - 18)) = palette[(idx & 32) != 0];
+ *((PaletteEntry*)(data - 15)) = palette[(idx & 16) != 0];
+ *((PaletteEntry*)(data - 12)) = palette[(idx & 8) != 0];
+ *((PaletteEntry*)(data - 9)) = palette[(idx & 4) != 0];
+ *((PaletteEntry*)(data - 6)) = palette[(idx & 2) != 0];
+ *((PaletteEntry*)(data - 3)) = palette[(idx & 1) != 0];
+ }
+
+ int idx = indices[0] << 24;
+ for( data -= 24; data < end; data += 3, idx += idx )
+ {
+ PaletteEntry clr = palette[idx < 0];
+ WRITE_PIX( data, clr );
+ }
+
+ return data;
+}
+
+
+uchar* FillGrayRow1( uchar* data, uchar* indices, int len, uchar* palette )
+{
+ uchar* end = data + len;
+
+ while( (data += 8) < end )
+ {
+ int idx = *indices++;
+ *((uchar*)(data - 8)) = palette[(idx & 128) != 0];
+ *((uchar*)(data - 7)) = palette[(idx & 64) != 0];
+ *((uchar*)(data - 6)) = palette[(idx & 32) != 0];
+ *((uchar*)(data - 5)) = palette[(idx & 16) != 0];
+ *((uchar*)(data - 4)) = palette[(idx & 8) != 0];
+ *((uchar*)(data - 3)) = palette[(idx & 4) != 0];
+ *((uchar*)(data - 2)) = palette[(idx & 2) != 0];
+ *((uchar*)(data - 1)) = palette[(idx & 1) != 0];
+ }
+
+ int idx = indices[0] << 24;
+ for( data -= 8; data < end; data++, idx += idx )
+ {
+ data[0] = palette[idx < 0];
+ }
+
+ return data;
+}
+
+
+CV_IMPL void
+cvConvertImage( const CvArr* srcarr, CvArr* dstarr, int flags )
+{
+ CvMat* temp = 0;
+
+ CV_FUNCNAME( "cvConvertImage" );
+
+ __BEGIN__;
+
+ CvMat srcstub, *src;
+ CvMat dststub, *dst;
+ int src_cn, dst_cn, swap_rb = flags & CV_CVTIMG_SWAP_RB;
+
+ CV_CALL( src = cvGetMat( srcarr, &srcstub ));
+ CV_CALL( dst = cvGetMat( dstarr, &dststub ));
+
+ src_cn = CV_MAT_CN( src->type );
+ dst_cn = CV_MAT_CN( dst->type );
+
+ if( src_cn != 1 && src_cn != 3 && src_cn != 4 )
+ CV_ERROR( CV_BadNumChannels, "Source image must have 1, 3 or 4 channels" );
+
+ if( CV_MAT_DEPTH( dst->type ) != CV_8U )
+ CV_ERROR( CV_BadDepth, "Destination image must be 8u" );
+
+ if( CV_MAT_CN(dst->type) != 1 && CV_MAT_CN(dst->type) != 3 )
+ CV_ERROR( CV_BadNumChannels, "Destination image must have 1 or 3 channels" );
+
+ if( !CV_ARE_DEPTHS_EQ( src, dst ))
+ {
+ int src_depth = CV_MAT_DEPTH(src->type);
+ double scale = src_depth <= CV_8S ? 1 : src_depth <= CV_32S ? 1./256 : 255;
+ double shift = src_depth == CV_8S || src_depth == CV_16S ? 128 : 0;
+
+ if( !CV_ARE_CNS_EQ( src, dst ))
+ {
+ temp = cvCreateMat( src->height, src->width,
+ (src->type & CV_MAT_CN_MASK)|(dst->type & CV_MAT_DEPTH_MASK));
+ cvConvertScale( src, temp, scale, shift );
+ src = temp;
+ }
+ else
+ {
+ cvConvertScale( src, dst, scale, shift );
+ src = dst;
+ }
+ }
+
+ if( src_cn != dst_cn || (src_cn == 3 && swap_rb) )
+ {
+ uchar *s = src->data.ptr, *d = dst->data.ptr;
+ int s_step = src->step, d_step = dst->step;
+ int code = src_cn*10 + dst_cn;
+ CvSize size = { src->cols, src->rows };
+
+ if( CV_IS_MAT_CONT(src->type & dst->type) )
+ {
+ size.width *= size.height;
+ size.height = 1;
+ s_step = d_step = CV_STUB_STEP;
+ }
+
+ switch( code )
+ {
+ case 13:
+ icvCvt_Gray2BGR_8u_C1C3R( s, s_step, d, d_step, size );
+ break;
+ case 31:
+ icvCvt_BGR2Gray_8u_C3C1R( s, s_step, d, d_step, size, swap_rb );
+ break;
+ case 33:
+ assert( swap_rb );
+ icvCvt_RGB2BGR_8u_C3R( s, s_step, d, d_step, size );
+ break;
+ case 41:
+ icvCvt_BGRA2Gray_8u_C4C1R( s, s_step, d, d_step, size, swap_rb );
+ break;
+ case 43:
+ icvCvt_BGRA2BGR_8u_C4C3R( s, s_step, d, d_step, size, swap_rb );
+ break;
+ default:
+ CV_ERROR( CV_StsUnsupportedFormat, "Unsupported combination of input/output formats" );
+ }
+ src = dst;
+ }
+
+ if( flags & CV_CVTIMG_FLIP )
+ {
+ CV_CALL( cvFlip( src, dst, 0 ));
+ }
+ else if( src != dst )
+ {
+ CV_CALL( cvCopy( src, dst ));
+ }
+
+ __END__;
+
+ cvReleaseMat( &temp );
+}
projects / opencv / blobdiff