bool TiffEncoder::writeLibTiff( const Mat& img, const vector<int>& /*params*/)
{
int channels = img.channels();
int width = img.cols, height = img.rows;
int depth = img.depth();
int bitsPerChannel = -1;
switch (depth)
{
case CV_8U:
{
bitsPerChannel = 8;
break;
}
case CV_16U:
{
bitsPerChannel = 16;
break;
}
default:
{
return false;
}
}
const int bitsPerByte = 8;
size_t fileStep = (width * channels * bitsPerChannel) / bitsPerByte;
int rowsPerStrip = (int)((1 << 13)/fileStep);
if( rowsPerStrip < 1 )
rowsPerStrip = 1;
if( rowsPerStrip > height )
rowsPerStrip = height;
// do NOT put "wb" as the mode, because the b means "big endian" mode, not "binary" mode.
// http://www.remotesensing.org/libtiff/man/TIFFOpen.3tiff.html
TIFF* pTiffHandle = TIFFOpen(m_filename.c_str(), "w");
if (!pTiffHandle)
{
return false;
}
// defaults for now, maybe base them on params in the future
int compression = COMPRESSION_LZW;
int predictor = PREDICTOR_HORIZONTAL;
int colorspace = channels > 1 ? PHOTOMETRIC_RGB : PHOTOMETRIC_MINISBLACK;
if ( !TIFFSetField(pTiffHandle, TIFFTAG_IMAGEWIDTH, width)
|| !TIFFSetField(pTiffHandle, TIFFTAG_IMAGELENGTH, height)
|| !TIFFSetField(pTiffHandle, TIFFTAG_BITSPERSAMPLE, bitsPerChannel)
|| !TIFFSetField(pTiffHandle, TIFFTAG_COMPRESSION, compression)
|| !TIFFSetField(pTiffHandle, TIFFTAG_PHOTOMETRIC, colorspace)
|| !TIFFSetField(pTiffHandle, TIFFTAG_SAMPLESPERPIXEL, channels)
|| !TIFFSetField(pTiffHandle, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG)
|| !TIFFSetField(pTiffHandle, TIFFTAG_ROWSPERSTRIP, rowsPerStrip)
|| !TIFFSetField(pTiffHandle, TIFFTAG_PREDICTOR, predictor)
)
{
TIFFClose(pTiffHandle);
return false;
}
// row buffer, because TIFFWriteScanline modifies the original data!
size_t scanlineSize = TIFFScanlineSize(pTiffHandle);
AutoBuffer<uchar> _buffer(scanlineSize+32);
uchar* buffer = _buffer;
if (!buffer)
{
TIFFClose(pTiffHandle);
return false;
}
for (int y = 0; y < height; ++y)
{
switch(channels)
{
case 1:
{
memcpy(buffer, img.data + img.step * y, scanlineSize);
break;
}
case 3:
{
if (depth == CV_8U)
icvCvt_BGR2RGB_8u_C3R( img.data + img.step*y, 0, buffer, 0, cvSize(width,1) );
else
icvCvt_BGR2RGB_16u_C3R( (const ushort*)(img.data + img.step*y), 0, (ushort*)buffer, 0, cvSize(width,1) );
break;
}
case 4:
{
if (depth == CV_8U)
icvCvt_BGRA2RGBA_8u_C4R( img.data + img.step*y, 0, buffer, 0, cvSize(width,1) );
else
icvCvt_BGRA2RGBA_16u_C4R( (const ushort*)(img.data + img.step*y), 0, (ushort*)buffer, 0, cvSize(width,1) );
break;
}
default:
{
TIFFClose(pTiffHandle);
return false;
}
}
int writeResult = TIFFWriteScanline(pTiffHandle, buffer, y, 0);
if (writeResult != 1)
{
TIFFClose(pTiffHandle);
return false;
}
}
TIFFClose(pTiffHandle);
return true;
}
bool TiffEncoder::write( const Mat& img, const vector<int>& /*params*/)
#endif
{
int channels = img.channels();
int width = img.cols, height = img.rows;
int depth = img.depth();
if (depth != CV_8U && depth != CV_16U)
return false;
int bytesPerChannel = depth == CV_8U ? 1 : 2;
int fileStep = width * channels * bytesPerChannel;
WLByteStream strm;
if( m_buf )
{
if( !strm.open(*m_buf) )
return false;
}
else
{
#ifdef HAVE_TIFF
return writeLibTiff(img, params);
#else
if( !strm.open(m_filename) )
return false;
#endif
}
int rowsPerStrip = (1 << 13)/fileStep;
if( rowsPerStrip < 1 )
rowsPerStrip = 1;
if( rowsPerStrip > height )
rowsPerStrip = height;
int i, stripCount = (height + rowsPerStrip - 1) / rowsPerStrip;
if( m_buf )
m_buf->reserve( alignSize(stripCount*8 + fileStep*height + 256, 256) );
/*#if defined _DEBUG || !defined WIN32
int uncompressedRowSize = rowsPerStrip * fileStep;
#endif*/
int directoryOffset = 0;
AutoBuffer<int> stripOffsets(stripCount);
AutoBuffer<short> stripCounts(stripCount);
AutoBuffer<uchar> _buffer(fileStep+32);
uchar* buffer = _buffer;
int stripOffsetsOffset = 0;
int stripCountsOffset = 0;
int bitsPerSample = 8 * bytesPerChannel;
int y = 0;
strm.putBytes( fmtSignTiffII, 4 );
strm.putDWord( directoryOffset );
// write an image data first (the most reasonable way
// for compressed images)
for( i = 0; i < stripCount; i++ )
{
int limit = y + rowsPerStrip;
if( limit > height )
limit = height;
stripOffsets[i] = strm.getPos();
for( ; y < limit; y++ )
{
if( channels == 3 )
{
if (depth == CV_8U)
icvCvt_BGR2RGB_8u_C3R( img.data + img.step*y, 0, buffer, 0, cvSize(width,1) );
else
icvCvt_BGR2RGB_16u_C3R( (const ushort*)(img.data + img.step*y), 0, (ushort*)buffer, 0, cvSize(width,1) );
}
else
{
if( channels == 4 )
{
if (depth == CV_8U)
icvCvt_BGRA2RGBA_8u_C4R( img.data + img.step*y, 0, buffer, 0, cvSize(width,1) );
else
icvCvt_BGRA2RGBA_16u_C4R( (const ushort*)(img.data + img.step*y), 0, (ushort*)buffer, 0, cvSize(width,1) );
}
}
strm.putBytes( channels > 1 ? buffer : img.data + img.step*y, fileStep );
}
stripCounts[i] = (short)(strm.getPos() - stripOffsets[i]);
/*assert( stripCounts[i] == uncompressedRowSize ||
stripCounts[i] < uncompressedRowSize &&
i == stripCount - 1);*/
}
if( stripCount > 2 )
{
stripOffsetsOffset = strm.getPos();
for( i = 0; i < stripCount; i++ )
strm.putDWord( stripOffsets[i] );
stripCountsOffset = strm.getPos();
for( i = 0; i < stripCount; i++ )
strm.putWord( stripCounts[i] );
}
else if(stripCount == 2)
{
stripOffsetsOffset = strm.getPos();
for (i = 0; i < stripCount; i++)
{
strm.putDWord (stripOffsets [i]);
}
stripCountsOffset = stripCounts [0] + (stripCounts [1] << 16);
}
else
{
stripOffsetsOffset = stripOffsets[0];
stripCountsOffset = stripCounts[0];
}
if( channels > 1 )
{
int bitsPerSamplePos = strm.getPos();
strm.putWord(bitsPerSample);
strm.putWord(bitsPerSample);
strm.putWord(bitsPerSample);
if( channels == 4 )
strm.putWord(bitsPerSample);
bitsPerSample = bitsPerSamplePos;
}
directoryOffset = strm.getPos();
// write header
strm.putWord( 9 );
/* warning: specification 5.0 of Tiff want to have tags in
ascending order. This is a non-fatal error, but this cause
warning with some tools. So, keep this in ascending order */
writeTag( strm, TIFF_TAG_WIDTH, TIFF_TYPE_LONG, 1, width );
writeTag( strm, TIFF_TAG_HEIGHT, TIFF_TYPE_LONG, 1, height );
writeTag( strm, TIFF_TAG_BITS_PER_SAMPLE,
TIFF_TYPE_SHORT, channels, bitsPerSample );
writeTag( strm, TIFF_TAG_COMPRESSION, TIFF_TYPE_LONG, 1, TIFF_UNCOMP );
writeTag( strm, TIFF_TAG_PHOTOMETRIC, TIFF_TYPE_SHORT, 1, channels > 1 ? 2 : 1 );
writeTag( strm, TIFF_TAG_STRIP_OFFSETS, TIFF_TYPE_LONG,
stripCount, stripOffsetsOffset );
writeTag( strm, TIFF_TAG_SAMPLES_PER_PIXEL, TIFF_TYPE_SHORT, 1, channels );
writeTag( strm, TIFF_TAG_ROWS_PER_STRIP, TIFF_TYPE_LONG, 1, rowsPerStrip );
writeTag( strm, TIFF_TAG_STRIP_COUNTS,
stripCount > 1 ? TIFF_TYPE_SHORT : TIFF_TYPE_LONG,
stripCount, stripCountsOffset );
strm.putDWord(0);
strm.close();
if( m_buf )
{
(*m_buf)[4] = (uchar)directoryOffset;
(*m_buf)[5] = (uchar)(directoryOffset >> 8);
(*m_buf)[6] = (uchar)(directoryOffset >> 16);
(*m_buf)[7] = (uchar)(directoryOffset >> 24);
}
else
{
bool TiffDecoder::readData( Mat& img )
{
bool result = false;
bool color = img.channels() > 1;
uchar* data = img.data;
if( img.depth() != CV_8U && img.depth() != CV_16U && img.depth() != CV_32F && img.depth() != CV_64F )
return false;
if( m_tif && m_width && m_height )
{
TIFF* tif = (TIFF*)m_tif;
int tile_width0 = m_width, tile_height0 = 0;
int x, y, i;
int is_tiled = TIFFIsTiled(tif);
int photometric;
TIFFGetField( tif, TIFFTAG_PHOTOMETRIC, &photometric );
int bpp = 8, ncn = photometric > 1 ? 3 : 1;
TIFFGetField( tif, TIFFTAG_BITSPERSAMPLE, &bpp );
TIFFGetField( tif, TIFFTAG_SAMPLESPERPIXEL, &ncn );
const int bitsPerByte = 8;
int dst_bpp = (int)(img.elemSize1() * bitsPerByte);
int wanted_channels = normalizeChannelsNumber(img.channels());
if(dst_bpp == 8)
{
char errmsg[1024];
if(!TIFFRGBAImageOK( tif, errmsg ))
{
close();
return false;
}
}
if( (!is_tiled) ||
(is_tiled &&
TIFFGetField( tif, TIFFTAG_TILEWIDTH, &tile_width0 ) &&
TIFFGetField( tif, TIFFTAG_TILELENGTH, &tile_height0 )))
{
if(!is_tiled)
TIFFGetField( tif, TIFFTAG_ROWSPERSTRIP, &tile_height0 );
if( tile_width0 <= 0 )
tile_width0 = m_width;
if( tile_height0 <= 0 )
tile_height0 = m_height;
AutoBuffer<uchar> _buffer( size_t(8) * tile_height0*tile_width0);
uchar* buffer = _buffer;
ushort* buffer16 = (ushort*)buffer;
float* buffer32 = (float*)buffer;
double* buffer64 = (double*)buffer;
int tileidx = 0;
for( y = 0; y < m_height; y += tile_height0, data += img.step*tile_height0 )
{
int tile_height = tile_height0;
if( y + tile_height > m_height )
tile_height = m_height - y;
for( x = 0; x < m_width; x += tile_width0, tileidx++ )
{
int tile_width = tile_width0, ok;
if( x + tile_width > m_width )
tile_width = m_width - x;
switch(dst_bpp)
{
case 8:
{
if( !is_tiled )
ok = TIFFReadRGBAStrip( tif, y, (uint32*)buffer );
else
ok = TIFFReadRGBATile( tif, x, y, (uint32*)buffer );
if( !ok )
{
close();
return false;
}
for( i = 0; i < tile_height; i++ )
if( color )
{
if (wanted_channels == 4)
{
icvCvt_BGRA2RGBA_8u_C4R( buffer + i*tile_width*4, 0,
data + x*4 + img.step*(tile_height - i - 1), 0,
cvSize(tile_width,1) );
}
else
{
icvCvt_BGRA2BGR_8u_C4C3R( buffer + i*tile_width*4, 0,
data + x*3 + img.step*(tile_height - i - 1), 0,
cvSize(tile_width,1), 2 );
}
}
else
icvCvt_BGRA2Gray_8u_C4C1R( buffer + i*tile_width*4, 0,
data + x + img.step*(tile_height - i - 1), 0,
cvSize(tile_width,1), 2 );
break;
}
case 16:
{
if( !is_tiled )
ok = (int)TIFFReadEncodedStrip( tif, tileidx, (uint32*)buffer, (tsize_t)-1 ) >= 0;
else
ok = (int)TIFFReadEncodedTile( tif, tileidx, (uint32*)buffer, (tsize_t)-1 ) >= 0;
if( !ok )
{
close();
return false;
}
for( i = 0; i < tile_height; i++ )
{
if( color )
{
if( ncn == 1 )
{
icvCvt_Gray2BGR_16u_C1C3R(buffer16 + i*tile_width*ncn, 0,
(ushort*)(data + img.step*i) + x*3, 0,
cvSize(tile_width,1) );
}
else if( ncn == 3 )
{
icvCvt_RGB2BGR_16u_C3R(buffer16 + i*tile_width*ncn, 0,
(ushort*)(data + img.step*i) + x*3, 0,
cvSize(tile_width,1) );
}
else
{
icvCvt_BGRA2BGR_16u_C4C3R(buffer16 + i*tile_width*ncn, 0,
(ushort*)(data + img.step*i) + x*3, 0,
cvSize(tile_width,1), 2 );
}
}
else
{
if( ncn == 1 )
{
memcpy((ushort*)(data + img.step*i)+x,
buffer16 + i*tile_width*ncn,
tile_width*sizeof(buffer16[0]));
}
else
{
icvCvt_BGRA2Gray_16u_CnC1R(buffer16 + i*tile_width*ncn, 0,
(ushort*)(data + img.step*i) + x, 0,
cvSize(tile_width,1), ncn, 2 );
}
}
}
break;
}
case 32:
case 64:
{
if( !is_tiled )
ok = (int)TIFFReadEncodedStrip( tif, tileidx, buffer, (tsize_t)-1 ) >= 0;
else
ok = (int)TIFFReadEncodedTile( tif, tileidx, buffer, (tsize_t)-1 ) >= 0;
if( !ok || ncn != 1 )
{
close();
return false;
}
for( i = 0; i < tile_height; i++ )
{
if(dst_bpp == 32)
{
memcpy((float*)(data + img.step*i)+x,
buffer32 + i*tile_width*ncn,
tile_width*sizeof(buffer32[0]));
}
else
{
memcpy((double*)(data + img.step*i)+x,
buffer64 + i*tile_width*ncn,
tile_width*sizeof(buffer64[0]));
}
}
break;
}
default:
{
close();
return false;
}
}
}
}
result = true;
}
}
close();
return result;
}
