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imgcodecs: add more Jasper checks for supported and tested cases

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This commit is contained in:
Alexander Alekhin 2018-01-09 17:36:57 +03:00
parent f34a0a874a
commit 435a3e337b
1 changed files with 39 additions and 7 deletions
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46
modules/imgcodecs/src/grfmt_jpeg2000.cpp
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@ -77,7 +77,8 @@ static JasperInitializer initialize_jasper;
Jpeg2KDecoder::Jpeg2KDecoder()
{
m_signature = '\0' + String() + '\0' + String() + '\0' + String("\x0cjP \r\n\x87\n");
static const unsigned char signature_[12] = { 0, 0, 0, 0x0c, 'j', 'P', ' ', ' ', 13, 10, 0x87, 10};
m_signature = String((const char*)signature_, (const char*)signature_ + sizeof(signature_));
m_stream = 0;
m_image = 0;
}
@ -121,6 +122,8 @@ bool Jpeg2KDecoder::readHeader()
jas_image_t* image = jas_image_decode( stream, -1, 0 );
m_image = image;
if( image ) {
CV_Assert(0 == (jas_image_tlx(image)) && "not supported");
CV_Assert(0 == (jas_image_tly(image)) && "not supported");
m_width = jas_image_width( image );
m_height = jas_image_height( image );
@ -130,14 +133,31 @@ bool Jpeg2KDecoder::readHeader()
for( int i = 0; i < numcmpts; i++ )
{
int depth_i = jas_image_cmptprec( image, i );
CV_Assert(depth == 0 || depth == depth_i); // component data type mismatch
depth = MAX(depth, depth_i);
if( jas_image_cmpttype( image, i ) > 2 )
continue;
int sgnd = jas_image_cmptsgnd(image, i);
int xstart = jas_image_cmpttlx(image, i);
int xend = jas_image_cmptbrx(image, i);
int xstep = jas_image_cmpthstep(image, i);
int ystart = jas_image_cmpttly(image, i);
int yend = jas_image_cmptbry(image, i);
int ystep = jas_image_cmptvstep(image, i);
CV_Assert(sgnd == 0 && "not supported");
CV_Assert(xstart == 0 && "not supported");
CV_Assert(ystart == 0 && "not supported");
CV_Assert(xstep == 1 && "not supported");
CV_Assert(ystep == 1 && "not supported");
CV_Assert(xend == m_width);
CV_Assert(yend == m_height);
cntcmpts++;
}
if( cntcmpts )
{
CV_Assert(depth == 8 || depth == 16);
CV_Assert(cntcmpts == 1 || cntcmpts == 3);
m_type = CV_MAKETYPE(depth <= 8 ? CV_8U : CV_16U, cntcmpts > 1 ? 3 : 1);
result = true;
}
@ -150,9 +170,14 @@ bool Jpeg2KDecoder::readHeader()
return result;
}
static void Jpeg2KDecoder_close(Jpeg2KDecoder* ptr)
{
ptr->close();
}
bool Jpeg2KDecoder::readData( Mat& img )
{
Ptr<Jpeg2KDecoder> close_this(this, Jpeg2KDecoder_close);
bool result = false;
int color = img.channels() > 1;
uchar* data = img.ptr();
@ -204,11 +229,16 @@ bool Jpeg2KDecoder::readData( Mat& img )
result = true;
}
else
fprintf(stderr, "JPEG 2000 LOADER ERROR: cannot convert colorspace\n");
{
jas_cmprof_destroy(clrprof);
CV_Error(Error::StsError, "JPEG 2000 LOADER ERROR: cannot convert colorspace");
}
jas_cmprof_destroy( clrprof );
}
else
fprintf(stderr, "JPEG 2000 LOADER ERROR: unable to create colorspace\n");
{
CV_Error(Error::StsError, "JPEG 2000 LOADER ERROR: unable to create colorspace");
}
}
else
result = true;
@ -257,8 +287,8 @@ bool Jpeg2KDecoder::readData( Mat& img )
result = readComponent16u( ((unsigned short *)data) + i, buffer, validateToInt(step / 2), cmptlut[i], maxval, offset, ncmpts );
if( !result )
{
i = ncmpts;
result = false;
jas_matrix_destroy( buffer );
CV_Error(Error::StsError, "JPEG2000 LOADER ERROR: failed to read component");
}
}
jas_matrix_destroy( buffer );
@ -267,10 +297,12 @@ bool Jpeg2KDecoder::readData( Mat& img )
}
}
else
fprintf(stderr, "JPEG2000 LOADER ERROR: colorspace conversion failed\n" );
{
CV_Error(Error::StsError, "JPEG2000 LOADER ERROR: colorspace conversion failed");
}
}
close();
CV_Assert(result == true);
#ifndef _WIN32
if (!clr.empty())