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fixed crashes in color-luv & color-lab when gcc 4.2 on x64 is used (tickets #502, #627)

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Vadim Pisarevsky
2010-10-22 18:32:07 +00:00
parent 5ac4b23b7c
commit 099388bd12
2 changed files with 12 additions and 8 deletions
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16
modules/imgproc/src/color.cpp
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@@ -1235,7 +1235,6 @@ static void initLabTabs()
}
}
struct RGB2Lab_b
{
typedef uchar channel_type;
@@ -1244,6 +1243,7 @@ struct RGB2Lab_b
const float* _whitept, bool _srgb)
: srccn(_srccn), srgb(_srgb)
{
static volatile int _3 = 3;
initLabTabs();
if(!_coeffs) _coeffs = sRGB2XYZ_D65;
@@ -1255,11 +1255,12 @@ struct RGB2Lab_b
(1 << lab_shift)/_whitept[2]
};
for( int i = 0; i < 3; i++ )
for( int i = 0; i < _3; i++ )
{
coeffs[i*3+(blueIdx^2)] = cvRound(_coeffs[i*3]*scale[i]);
coeffs[i*3+1] = cvRound(_coeffs[i*3+1]*scale[i]);
coeffs[i*3+blueIdx] = cvRound(_coeffs[i*3+2]*scale[i]);
CV_Assert( coeffs[i] >= 0 && coeffs[i*3+1] >= 0 && coeffs[i*3+2] >= 0 &&
coeffs[i*3] + coeffs[i*3+1] + coeffs[i*3+2] < 2*(1 << lab_shift) );
}
@@ -1307,13 +1308,14 @@ struct RGB2Lab_f
const float* _whitept, bool _srgb)
: srccn(_srccn), srgb(_srgb)
{
volatile int _3 = 3;
initLabTabs();
if(!_coeffs) _coeffs = sRGB2XYZ_D65;
if(!_whitept) _whitept = D65;
float scale[] = { LabCbrtTabScale/_whitept[0], LabCbrtTabScale, LabCbrtTabScale/_whitept[2] };
for( int i = 0; i < 3; i++ )
for( int i = 0; i < _3; i++ )
{
coeffs[i*3+(blueIdx^2)] = _coeffs[i*3]*scale[i];
coeffs[i*3+1] = _coeffs[i*3+1]*scale[i];
@@ -1484,9 +1486,11 @@ struct RGB2Luv_f
for( int i = 0; i < 3; i++ )
{
coeffs[i*3+(blueIdx^2)] = _coeffs[i*3];
coeffs[i*3] = _coeffs[i*3];
coeffs[i*3+1] = _coeffs[i*3+1];
coeffs[i*3+blueIdx] = _coeffs[i*3+2];
coeffs[i*3+2] = _coeffs[i*3+2];
if( blueIdx == 0 )
std::swap(coeffs[i*3], coeffs[i*3+2]);
CV_Assert( coeffs[i*3] >= 0 && coeffs[i*3+1] >= 0 && coeffs[i*3+2] >= 0 &&
coeffs[i*3] + coeffs[i*3+1] + coeffs[i*3+2] < 1.5f );
}
@@ -2343,7 +2347,7 @@ void cvtColor( const Mat& src, Mat& dst, int code, int dcn )
int scn = src.channels(), depth = src.depth(), bidx;
CV_Assert( depth == CV_8U || depth == CV_16U || depth == CV_32F );
switch( code )
{
case CV_BGR2BGRA: case CV_RGB2BGRA: case CV_BGRA2BGR: