ossimJpegCodec Class Reference

#include <ossimJpegCodec.h>

Inheritance diagram for ossimJpegCodec:

Public Member Functions
	ossimJpegCodec ()
virtual	~ossimJpegCodec ()
virtual ossimString	getCodecType () const
virtual bool	encode (const ossimRefPtr< ossimImageData > &in, std::vector< ossim_uint8 > &out) const
	Encode jpeg method. More...
virtual bool	decode (const std::vector< ossim_uint8 > &in, ossimRefPtr< ossimImageData > &out) const
	Decode jpeg method. More...
virtual const std::string &	getExtension () const
virtual void	setProperty (ossimRefPtr< ossimProperty > property)
	Ineterface to allow for specific properties to be set. More...
virtual ossimRefPtr< ossimProperty >	getProperty (const ossimString &name) const
	Interface to get the value of a specific property. More...
virtual void	getPropertyNames (std::vector< ossimString > &propertyNames) const
	Get a list of all supported property names. More...
virtual bool	loadState (const ossimKeywordlist &kwl, const char *prefix=0)
	Allocate the state of the object thorugh a factory load/keywordlist. More...
virtual bool	saveState (ossimKeywordlist &kwl, const char *prefix=0) const
	Save the state of the codec to the keywordlist. More...
Public Member Functions inherited from ossimObject
	ossimObject ()
virtual	~ossimObject ()
virtual ossimObject *	dup () const
virtual ossimString	getShortName () const
virtual ossimString	getLongName () const
virtual ossimString	getDescription () const
virtual ossimString	getClassName () const
virtual RTTItypeid	getType () const
virtual bool	canCastTo (ossimObject *obj) const
virtual bool	canCastTo (const RTTItypeid &id) const
virtual bool	canCastTo (const ossimString &parentClassName) const
virtual std::ostream &	print (std::ostream &out) const
	Generic print method. More...
virtual bool	isEqualTo (const ossimObject &obj, ossimCompareType compareType=OSSIM_COMPARE_FULL) const
virtual void	accept (ossimVisitor &visitor)
Public Member Functions inherited from ossimReferenced
	ossimReferenced ()
	ossimReferenced (const ossimReferenced &)
ossimReferenced &	operator= (const ossimReferenced &)
void	ref () const
	increment the reference count by one, indicating that this object has another pointer which is referencing it. More...
void	unref () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...
void	unref_nodelete () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...
int	referenceCount () const
Public Member Functions inherited from ossimPropertyInterface
	ossimPropertyInterface ()
virtual	~ossimPropertyInterface ()
virtual void	setProperty (const ossimString &name, const ossimString &value)
virtual ossimString	getPropertyValueAsString (const ossimString &name) const
void	getPropertyList (std::vector< ossimRefPtr< ossimProperty > > &propertyList) const
void	setProperties (std::vector< ossimRefPtr< ossimProperty > > &propertyList)

Protected Member Functions
bool	decodeJpeg (const std::vector< ossim_uint8 > &in, ossimRefPtr< ossimImageData > &out) const
	For decoding standard jpeg block. More...
bool	decodeJpegToRgb (const std::vector< ossim_uint8 > &in, ossimRefPtr< ossimImageData > &out) const
	For decoding color spaces other that mono and rgb. More...
ossim_int32	getColorSpace (const std::vector< ossim_uint8 > &in) const
Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()

Protected Attributes
ossim_uint32	m_quality
std::string	m_ext

Detailed Description

Definition at line 14 of file ossimJpegCodec.h.

Constructor & Destructor Documentation

ossimJpegCodec()

ossimJpegCodec::ossimJpegCodec

(

)

Definition at line 45 of file ossimJpegCodec.cpp.

   :m_quality(100),
    m_ext("jpg")
{
}

~ossimJpegCodec()

ossimJpegCodec::~ossimJpegCodec ( )

virtual

Definition at line 51 of file ossimJpegCodec.cpp.

{
}

Member Function Documentation

decode()

bool ossimJpegCodec::decode ( const std::vector< ossim_uint8 > &  in, ossimRefPtr< ossimImageData > &  out  ) const

virtual

Decode jpeg method.

Parameters

in	Input data to decode.
out	Output tile. If the pointer to ossimImageData is null internally it will be created. For code loops it is better to pre initialized to correct size.

Note

Caller should set "out's" image rectangle upon successful decode.

Returns

true on success, false on failure.

Implements ossimCodecBase.

Definition at line 186 of file ossimJpegCodec.cpp.

References decodeJpeg(), and decodeJpegToRgb().

{
   bool result = false;

   // Check for jpeg signature:
   if ( in.size() > 3 )
   {
      if ( (in[0] == 0xff) &&
           (in[1] == 0xd8) &&
           (in[2] == 0xff) )
      {
         if (in[3] == 0xe0)
         {
            result = decodeJpeg( in, out );
         }
         else if (in[3] == 0xdb)
         {
            result = decodeJpegToRgb( in, out );
         }
      }
   }
   
   return result;   
}

decodeJpeg()

bool ossimJpegCodec::decodeJpeg ( const std::vector< ossim_uint8 > &  in, ossimRefPtr< ossimImageData > &  out  ) const

protected

For decoding standard jpeg block.

Curently only handles CMYK.

Parameters

in	Input jpeg buffer.
out	Initialized by this.

Returns

true on success, false on error.

Definition at line 212 of file ossimJpegCodec.cpp.

References ossimJpegErrorExit(), ossimJpegMemorySrc(), ossimJpegErrorMgr::pub, ossimJpegErrorMgr::setjmp_buffer, and TRUE.

Referenced by decode(), and decodeJpegToRgb().

{
   bool result = false;

   /* This struct contains the JPEG decompression parameters and pointers
    * to working space (which is allocated as needed by the JPEG library).
    */
   jpeg_decompress_struct cinfo;
   
   /* We use our private extension JPEG error handler.
    * Note that this struct must live as long as the main JPEG parameter
    * struct, to avoid dangling-pointer problems.
    */
   ossimJpegErrorMgr jerr;
   
   /* Step 1: allocate and initialize JPEG decompression object */
   
   /* We set up the normal JPEG error routines, then override error_exit. */
   cinfo.err = jpeg_std_error(&jerr.pub);
   
   jerr.pub.error_exit = ossimJpegErrorExit;
   
   /* Establish the setjmp return context for my_error_exit to use. */
   if (setjmp(jerr.setjmp_buffer) == 0)
   {
      result = true;
      
      /* Now we can initialize the JPEG decompression object. */
      jpeg_CreateDecompress(&cinfo, JPEG_LIB_VERSION, sizeof(cinfo));
      
      //---
      // Step 2: specify data source.  In this case we will uncompress from
      // memory so we will use "ossimJpegMemorySrc" in place of " jpeg_stdio_src".
      //---
      ossimJpegMemorySrc ( &cinfo, &(in.front()), (size_t)(in.size()) );
      
      /* Step 3: read file parameters with jpeg_read_header() */
      jpeg_read_header(&cinfo, TRUE);
      
      /* Step 4: set parameters for decompression */
      
      /* Step 5: Start decompressor */
      jpeg_start_decompress(&cinfo);

      const ossim_uint32 SAMPLES = cinfo.output_width;
      const ossim_uint32 LINES   = cinfo.output_height;
      const ossim_uint32 BANDS   = cinfo.output_components;

#if 0       /* Please leave for debug. (drb) */
      if ( traceDebug() )
      {
         ossimNotify(ossimNotifyLevel_DEBUG)
            << "jpeg cinfo.output_width:  " << cinfo.output_width
            << "\njpeg cinfo.output_height: " << cinfo.output_height
            << "\njpeg cinfo.out_color_space: " << cinfo.out_color_space
            << "\n";
      }
#endif

      if ( out.valid() )
      {
         // This will resize tile if not correct.
         out->setImageRectangleAndBands(
            ossimIrect(0,0,(ossim_int32)SAMPLES-1,(ossim_int32)LINES-1), BANDS );
      }
      else
      {
         out = new ossimU8ImageData( 0, BANDS, SAMPLES, LINES );
         out->initialize();
      }
      
      // Get pointers to the cache tile buffers.
      std::vector<ossim_uint8*> destinationBuffer(BANDS);
      for (ossim_uint32 band = 0; band < BANDS; ++band)
      {
         destinationBuffer[band] = out->getUcharBuf(band);
      }
      
      std::vector<ossim_uint8> lineBuffer(SAMPLES * cinfo.output_components);
      JSAMPROW jbuf[1];
      jbuf[0] = (JSAMPROW) &(lineBuffer.front());
      
      while (cinfo.output_scanline < LINES)
      {
         // Read a line from the jpeg file.
         jpeg_read_scanlines(&cinfo, jbuf, 1);
         
         //---
         // Copy the line which if band interleaved by pixel the the band
         // separate buffers.
         //---
         ossim_uint32 index = 0;
         for (ossim_uint32 sample = 0; sample < SAMPLES; ++sample)         
         {
            for (ossim_uint32 band = 0; band < BANDS; ++band)
            {
               destinationBuffer[band][sample] = lineBuffer[index];
               ++index;
            }
         }
         
         for (ossim_uint32 band = 0; band < BANDS; ++band)
         {
            destinationBuffer[band] += SAMPLES;
         }
      }

      // Set the tile status:
      out->validate();

      // clean up...
      
      jpeg_finish_decompress(&cinfo);
      
   } // Matches: if (setjmp(jerr.setjmp_buffer) == 0)

   jpeg_destroy_decompress(&cinfo);
   
   return result;
}

decodeJpegToRgb()

bool ossimJpegCodec::decodeJpegToRgb ( const std::vector< ossim_uint8 > &  in, ossimRefPtr< ossimImageData > &  out  ) const

protected

For decoding color spaces other that mono and rgb.

Curently only handles CMYK.

Parameters

in	Input jpeg buffer.
out	Initialized by this.

Returns

true on success, false on error.

Definition at line 334 of file ossimJpegCodec.cpp.

References decodeJpeg(), getColorSpace(), ossimImageData::getImageRectangle(), ossimImageData::getNumberOfBands(), ossimImageData::getUcharBuf(), ossimIrect::height(), ossimImageData::initialize(), ossimNotify(), ossimNotifyLevel_WARN, ossimImageData::setImageRectangleAndBands(), ossimRefPtr< T >::valid(), ossimImageData::validate(), and ossimIrect::width().

Referenced by decode().

{   
   bool result = false;
   
   ossim_int32 jpegColorSpace = getColorSpace( in );

   if ( jpegColorSpace == JCS_CMYK )
   {
      ossimRefPtr<ossimImageData> cmykTile = 0;

      result = decodeJpeg( in, cmykTile ); // Decode to CMYK tile.
      if ( result )
      {
         if ( cmykTile.valid() )
         {
            const ossim_uint32 INPUT_BANDS = cmykTile->getNumberOfBands();
            if ( INPUT_BANDS == 4 )
            {
               const ossim_uint32 OUTPUT_BANDS = 3;
               const ossimIrect   RECT         = cmykTile->getImageRectangle();
               const ossim_uint32 LINES        = RECT.height();
               const ossim_uint32 SAMPLES      = RECT.width();
               ossim_uint32 band = 0;
               
               // Set or create output tile:
               if ( out.valid() )
               {
                  // This will resize tile if not correct.
                  out->setImageRectangleAndBands( RECT, OUTPUT_BANDS );
               }
               else
               {
                  out = new ossimU8ImageData( 0, OUTPUT_BANDS, SAMPLES, LINES );
                  out->initialize();
               }
               
               // Assign pointers to bands.
               std::vector<const ossim_uint8*> inBands(INPUT_BANDS);
               for ( band = 0; band < INPUT_BANDS; ++band )
               {
                  inBands[band] = cmykTile->getUcharBuf( band );
               }
               std::vector<ossim_uint8*> outBands(INPUT_BANDS);
               for ( band = 0; band < OUTPUT_BANDS; ++band )
               {
                  outBands[band] = out->getUcharBuf( band );
               }
               
               const ossim_uint8 NP   = 0;   // null pixel
               const ossim_uint8 MAXP = 255; // max pixel
               
               std::vector<ossim_float32> cmyk(INPUT_BANDS, 0.0);
               std::vector<ossim_float32> rgb(OUTPUT_BANDS, 0.0);
               
               for ( ossim_uint32 line = 0; line < LINES; ++line )
               {
                  for (ossim_uint32 sample = 0; sample < SAMPLES; ++sample)
                  {
                     //---
                     // NOTE:
                     // This current does NOT work, colors come out wrong, with
                     // the one dataset that I have:
                     // "2015_05_05_Whitehorse_3857.gpkg"
                     // (drb - 03 June 2015)
                     //---
                     
                     cmyk[0] = inBands[0][sample]; // C
                     cmyk[1] = inBands[1][sample]; // M
                     cmyk[2] = inBands[2][sample]; // Y
                     cmyk[3] = inBands[3][sample]; // K

                     //---
                     // The red (R) color is calculated from the cyan (C) and black (K) colors.
                     // The green color (G) is calculated from the magenta (M) and black (K) colors.
                     // The blue color (B) is calculated from the yellow (Y) and black (K) colors.
                     //---
                     // rgb[0] = (255.0-cmyk[0]) * 255.0-cmyk[3];
                     // rgb[1] = (255.0-cmyk[1]) * 255.0-cmyk[3];
                     // rgb[2] = (255.0-cmyk[2]) * 255.0-cmyk[3];
                     rgb[0] = (cmyk[0]) * cmyk[3]/255.0;
                     rgb[1] = (cmyk[1]) * cmyk[3]/255.0;
                     rgb[2] = (cmyk[2]) * cmyk[3]/255.0;
                     
                     outBands[0][sample] =
                        ( (rgb[0] >= 0.0) ? ( (rgb[0] <= 255.0) ?
                                              (ossim_uint8)rgb[0] : MAXP ) : NP );
                     outBands[1][sample] =
                        ( (rgb[1] >= 0.0) ? ( (rgb[1] <= 255.0) ?
                                              (ossim_uint8)rgb[1] : MAXP ) : NP );
                     outBands[2][sample] =
                        ( (rgb[2] >= 0.0) ? ( (rgb[2] <= 255.0) ?
                                              (ossim_uint8)rgb[2] : MAXP ) : NP );
                     
                  } // End sample loop.
                  
                  // Increment pointers.
                  for (ossim_uint32 band = 0; band < OUTPUT_BANDS; ++band)
                  {
                     inBands[band]  += SAMPLES;
                     outBands[band] += SAMPLES;
                  }
                  inBands[3] += SAMPLES; // Last band of input.
                  
               } // End of line loop.
               
               // Set the tile status:
               out->validate();
               
            } // Matches sanity check: if ( INPUT_BANDS == 4 )

         }  // Matches: if ( cmykTile.valid() )
         
      } // Matches: if ( decodeJpeg( in, cmykTile ) )
      
   } // Matches: if ( jpegColorSpace == JCS_CMYK )
   else
   {
      ossimNotify(ossimNotifyLevel_WARN)
            << "ossimJpegCodec::decodeJpegRgb: WARNING: "
            << "Unhandled jpeg output color space!" << std::endl;
   }

   return result;
   
} // End: ossimJpegCodec::decodeJpegRgb( ... )

encode()

bool ossimJpegCodec::encode ( const ossimRefPtr< ossimImageData > &  in, std::vector< ossim_uint8 > &  out  ) const

virtual

Encode jpeg method.

Current options handled by this factory:

type: jpeg quality: 75

Parameters

in	Input data to encode.
out	Encoded output data.

Returns

true on success, false on failure.

Implements ossimCodecBase.

Definition at line 65 of file ossimJpegCodec.cpp.

References ossimDataObject::getDataObjectStatus(), ossimImageData::getHeight(), ossimImageData::getNumberOfBands(), ossimRectilinearDataObject::getScalarType(), ossimImageData::getUcharBuf(), ossimImageData::getWidth(), jpeg_cpp_stream_dest(), m_quality, OSSIM_NULL, OSSIM_UINT8, ossimNotify(), ossimNotifyLevel_WARN, TRUE, and ossimRefPtr< T >::valid().

{
   bool result = false;
   if ( in.valid() && (in->getDataObjectStatus() != OSSIM_NULL) )
   {
      if ( in->getScalarType() == OSSIM_UINT8 )
      {
         // Open a memory stream up to put the jpeg image in memory:
         std::stringstream jpegStreamBuf;
         
         //---
         // Initialize JPEG compression library:
         // NOTE: JDIMENSION is an "unsigned int"
         //---
         struct jpeg_compress_struct cinfo;
         struct jpeg_error_mgr jerr;
         cinfo.err = jpeg_std_error( &jerr );
         jpeg_create_compress(&cinfo);
      
         // Define a custom stream destination manager for jpeglib to write compressed block:
         jpeg_cpp_stream_dest(&cinfo, jpegStreamBuf);
      
         /* Setting the parameters of the output file here */
         cinfo.image_width = in->getWidth();
         cinfo.image_height = in->getHeight();
   
         // Bands must be one or three for this writer.
         const ossim_uint32 INPUT_BANDS = in->getNumberOfBands();
         if ( (INPUT_BANDS == 1) || (INPUT_BANDS == 3) )
         {
            cinfo.input_components = INPUT_BANDS;
         }
         else
         {
            if ( INPUT_BANDS < 3 )
            {
               cinfo.input_components = 1; // Use first band.
            }
            else
            {
               cinfo.input_components = 3; // Use the first 3 bands.
            }
         }
      
         // colorspace of input image 
         if ( cinfo.input_components == 3)
         {
            cinfo.in_color_space = JCS_RGB;
         }
         else
         {
            cinfo.in_color_space = JCS_GRAYSCALE;
         }
      
         // Default compression parameters, we shouldn't be worried about these.
         jpeg_set_defaults( &cinfo );
      
         jpeg_set_quality(&cinfo, m_quality, TRUE); //limit to baseline-JPEG values
      
         // Now do the compression...
         jpeg_start_compress( &cinfo, TRUE );
      
         // Line buffer:
         ossim_uint32 buf_size = cinfo.input_components*cinfo.image_width;
         std::vector<ossim_uint8> buf(buf_size);
      
         // Compress the tile on line at a time:
      
         JSAMPROW row_pointer[1]; // Pointer to a single row.
         row_pointer[0] = (JSAMPLE*)&buf.front();

         // Get pointers to the input data:
         std::vector<const ossim_uint8*> inBuf(cinfo.input_components);
         for ( ossim_int32 band = 0; band < cinfo.input_components; ++band )
         {
            inBuf[band] = in->getUcharBuf(band);
         }

         ossim_uint32 inIdx = 0;
         for (ossim_uint32 line=0; line< cinfo.image_height; ++line)
         {
            // Convert from band sequential to band interleaved by pixel.
            ossim_uint32 outIdx = 0;
            for ( ossim_uint32 p = 0; p < cinfo.image_width; ++p )
            {
               for ( ossim_int32 band = 0; band < cinfo.input_components; ++band )
               {
                  buf[outIdx++] = inBuf[band][inIdx];
               }
               ++inIdx;
            }

            // Write it...
            jpeg_write_scanlines( &cinfo, row_pointer, 1 );
         }
      
         // Similar to read file, clean up after we're done compressing.
         jpeg_finish_compress( &cinfo );
         jpeg_destroy_compress( &cinfo );

         // Copy the memory stream to output vector.
         out.resize(jpegStreamBuf.str().size());
         jpegStreamBuf.seekg(0, std::ios_base::beg);
         jpegStreamBuf.read((char*)&out.front(), jpegStreamBuf.str().size());

         result = true;
      }
      else // Scalar type check...
      {
         ossimNotify(ossimNotifyLevel_WARN)
            << "ossimCodecFactory::encodeJpeg ERROR:"
            << "\nPassing non-eight bit data to eight bit encoder!" << std::endl;
      }
      
   } // Matches: if ( in.valid() ... )
   
   return result;

}

getCodecType()

ossimString ossimJpegCodec::getCodecType ( ) const

virtual

Returns

Codec type. "jpeg"

Implements ossimCodecBase.

Definition at line 55 of file ossimJpegCodec.cpp.

{
   return ossimString("jpeg");
}

getColorSpace()

ossim_int32 ossimJpegCodec::getColorSpace ( const std::vector< ossim_uint8 > &  in ) const

protected

Returns

The enumerated libjpeg out_color_space.

Definition at line 462 of file ossimJpegCodec.cpp.

References ossimJpegErrorExit(), ossimJpegMemorySrc(), ossimJpegErrorMgr::pub, ossimJpegErrorMgr::setjmp_buffer, and TRUE.

Referenced by decodeJpegToRgb().

{
   J_COLOR_SPACE result = JCS_UNKNOWN;

   if ( in.size() )
   {
      jpeg_decompress_struct cinfo;
      ossimJpegErrorMgr jerr;
      cinfo.err = jpeg_std_error(&jerr.pub);
      jerr.pub.error_exit = ossimJpegErrorExit;
      
      /* Establish the setjmp return context for my_error_exit to use. */
      if (setjmp(jerr.setjmp_buffer) == 0)
      {
         jpeg_CreateDecompress(&cinfo, JPEG_LIB_VERSION, sizeof(cinfo));
         ossimJpegMemorySrc ( &cinfo, &(in.front()), (size_t)(in.size()) );
         jpeg_read_header(&cinfo, TRUE);
         result = cinfo.out_color_space;
         jpeg_destroy_decompress(&cinfo);
      }
   }
   return result;
}

getExtension()

const std::string & ossimJpegCodec::getExtension ( ) const

virtual

Implements ossimCodecBase.

Definition at line 60 of file ossimJpegCodec.cpp.

References m_ext.

{
   return m_ext; // "jpg"
}

getProperty()

ossimRefPtr< ossimProperty > ossimJpegCodec::getProperty ( const ossimString &  name ) const

virtual

Interface to get the value of a specific property.

Parameters

in	name. Property name to retrieve

Returns

property value

Reimplemented from ossimPropertyInterface.

Definition at line 494 of file ossimJpegCodec.cpp.

References ossimPropertyInterface::getProperty(), m_quality, ossimKeywordNames::QUALITY_KW, and ossimString::toString().

{
   ossimRefPtr<ossimProperty> result;
   
   if(name == ossimKeywordNames::QUALITY_KW)
   {
      result = new ossimNumericProperty(ossimKeywordNames::QUALITY_KW,
                                        ossimString::toString(m_quality),
                                        0,
                                        100);
   }
   else
   {
      result = ossimCodecBase::getProperty(name);
   }
   return result;
}

getPropertyNames()

void ossimJpegCodec::getPropertyNames ( std::vector< ossimString > &  propertyNames ) const

virtual

Get a list of all supported property names.

Currently only "quality" property is exposed

Parameters

out	proeprtyNames. push the list of proeprty names to the list

Reimplemented from ossimPropertyInterface.

Definition at line 512 of file ossimJpegCodec.cpp.

References ossimPropertyInterface::getPropertyNames(), and ossimKeywordNames::QUALITY_KW.

{
   ossimCodecBase::getPropertyNames(propertyNames);
   propertyNames.push_back(ossimKeywordNames::QUALITY_KW);
}

loadState()

bool ossimJpegCodec::loadState ( const ossimKeywordlist &  kwl, const char *  prefix = 0  )

virtual

Allocate the state of the object thorugh a factory load/keywordlist.

Parameters

in	kwl. Input keywordlist that holds the values.
in	prefix. prefix to use for all keywords.

Reimplemented from ossimObject.

Definition at line 518 of file ossimJpegCodec.cpp.

References ossimKeywordlist::find(), ossimObject::loadState(), m_quality, ossimKeywordNames::QUALITY_KW, and ossimString::toUInt32().

{
   const char* quality = kwl.find(prefix, ossimKeywordNames::QUALITY_KW);
   
   if(quality)
   {
      m_quality = ossimString(quality).toUInt32();
   }
   
   return ossimCodecBase::loadState(kwl, prefix);
}

saveState()

bool ossimJpegCodec::saveState ( ossimKeywordlist &  kwl, const char *  prefix = 0  ) const

virtual

Save the state of the codec to the keywordlist.

Parameters

out	kwl. Input keywordlist that holds the values.
in	prefix. prefix to use for all keywords.

Reimplemented from ossimObject.

Definition at line 530 of file ossimJpegCodec.cpp.

References ossimKeywordlist::add(), m_quality, ossimKeywordNames::QUALITY_KW, and ossimObject::saveState().

{
   kwl.add(prefix, ossimKeywordNames::QUALITY_KW, m_quality);
   
   return ossimCodecBase::saveState(kwl, prefix);
}

setProperty()

void ossimJpegCodec::setProperty ( ossimRefPtr< ossimProperty >  property )

virtual

Ineterface to allow for specific properties to be set.

Reimplemented from ossimPropertyInterface.

Definition at line 486 of file ossimJpegCodec.cpp.

References ossimProperty::getName(), m_quality, and ossimKeywordNames::QUALITY_KW.

{
   if(property->getName() == ossimKeywordNames::QUALITY_KW)
   {
      m_quality = property->valueToString().toUInt32();
   }
}

Member Data Documentation

m_ext

std::string ossimJpegCodec::m_ext

protected

Definition at line 131 of file ossimJpegCodec.h.

Referenced by getExtension().

m_quality

ossim_uint32 ossimJpegCodec::m_quality

protected

Definition at line 130 of file ossimJpegCodec.h.

Referenced by encode(), getProperty(), loadState(), saveState(), and setProperty().

---

The documentation for this class was generated from the following files:

• ossimJpegCodec.h
• ossimJpegCodec.cpp