//------------------------------------------------------------------------------------------------------------------
bool FormatSgi::SaveImage (const char* acFilename)
{
char cZero = 0;
Stream qSaveStream(acFilename,false);
// Header.
short sSignature = 474;
qSaveStream.Write(sSignature);
char cStorage;
switch ( m_eCompression )
{
case CT_NONE:
cStorage = 0;
break;
case CT_RLE:
cStorage = 1;
break;
}
qSaveStream.Write(cStorage);
char cBytesPerChannel = m_iBytesPerSample;
qSaveStream.Write(cBytesPerChannel);
unsigned short usNumberOfDimensions;
switch ( m_eColorModel )
{
case CMT_GRAYSCALE:
usNumberOfDimensions = 2;
break;
case CMT_GRAYSCALE_WITH_ALPHA:
case CMT_RGB:
case CMT_RGBA:
usNumberOfDimensions = 3;
break;
}
qSaveStream.Write(usNumberOfDimensions);
unsigned short usSizeX = m_iWidth;
unsigned short usSizeY = m_iHeight;
unsigned short usSizeZ = m_iSampleQuantity;
qSaveStream.Write(usSizeX);
qSaveStream.Write(usSizeY);
qSaveStream.Write(usSizeZ);
int iMinPixVal = 0;
int iMaxPixVal = (1 << m_iBytesPerSample*8) - 1;
qSaveStream.Write(iMinPixVal);
qSaveStream.Write(iMaxPixVal);
for (int i = 0; i < 84; i++)
qSaveStream.Write(cZero);
int iColormapId = 0;
qSaveStream.Write(iColormapId);
for (int i = 0; i < 404; i++)
qSaveStream.Write(cZero);
int iScanlineQuantity = m_iSampleQuantity*m_iHeight;
if ( m_eCompression == CT_RLE )
{
// will overwrite SGI scanline offsets and lengths later
int iTablesDataSize = iScanlineQuantity*8;
for (int i = 0; i < iTablesDataSize; i++)
qSaveStream.Write(cZero);
}
// for a progress bar
ProgressProbe qProgress(this);
qProgress.SetAdvance(1.0f/iScanlineQuantity);
// write the image
int iScanlineByteSize = m_iWidth*m_iBytesPerSample;
StillArray<unsigned char> qUncompressedScanline(iScanlineByteSize);
int iHMO = m_iHeight - 1;
unsigned char* pucSample;
unsigned short usValue;
unsigned char ucSample0, ucSample1, ucPrevSample;
unsigned short usSample0, usSample1, usPrevSample;
bool bLastRunWasLiteral;
int iSamplesLeft, iRunLength, iLastLiteralRunLength, iLastLiteralCounterPos, iCodedSampleQuantity;
int iLengthsTablePos, iSLRecCount, iInTabOff, iOffset, iByteLength;
if ( m_eCompression == CT_RLE )
{
iLengthsTablePos = 512 + iScanlineQuantity*4;
iSLRecCount = 0;
}
float afSamples[4];
for (int i0 = 0; i0 < m_iSampleQuantity; i0++)
{
for (int iY = iHMO; iY >= 0; iY--)
{
// assign sample values
pucSample = qUncompressedScanline;
for (int iX = 0; iX < m_iWidth; iX++)
{
if ( m_eColorModel == CMT_GRAYSCALE )
{
afSamples[0] = m_spqImageSaveTo->GetPixelIntensity(iX,iY);
}
else if ( m_eColorModel == CMT_GRAYSCALE_WITH_ALPHA )
{
Link<float,float> qIntensityWithAlpha =
m_spqImageSaveTo->GetPixelIntensityWithAlpha(iX,iY);
afSamples[0] = qIntensityWithAlpha.First;
afSamples[1] = qIntensityWithAlpha.Second;
}
else if ( m_eColorModel == CMT_RGB )
{
ColorRgb qColorRgb = m_spqImageSaveTo->GetPixelRgb(iX,iY);
for (int i1 = 0; i1 < 3; i1++)
afSamples[i1] = qColorRgb[i1];
}
else // m_eColorModel = CMT_RGBA
{
ColorRgba qColorRgba = m_spqImageSaveTo->GetPixelRgba(iX,iY);
for (int i1 = 0; i1 < 4; i1++)
afSamples[i1] = qColorRgba[i1];
}
if ( m_iBytesPerSample == 1 )
{
*pucSample++ = Mathf::RoundToInt(afSamples[i0]*255);
}
else // m_iBytesPerSample = 2
{
usValue = Mathf::RoundToInt(afSamples[i0]*65535);
Storage::Write2be((char*)pucSample,1,&usValue);
pucSample += 2;
}
}
if ( m_eCompression == CT_NONE )
{
qSaveStream.Write(iScanlineByteSize,qUncompressedScanline);
}
else
{
// pack the scanline
bLastRunWasLiteral = false;
iCodedSampleQuantity = 0;
if ( m_iBytesPerSample == 1 )
{
Array<unsigned char> qCompressedScanline;
for (/**/; /**/; /**/)
{
iSamplesLeft = m_iWidth - iCodedSampleQuantity;
if ( iSamplesLeft == 0 )
break;
if ( iSamplesLeft == 1 )
{
if ( bLastRunWasLiteral && iLastLiteralRunLength < 127 )
qCompressedScanline[iLastLiteralCounterPos]++;
else
qCompressedScanline.Push(129);
qCompressedScanline.Push(qUncompressedScanline[iCodedSampleQuantity]);
break;
}
ucSample0 = qUncompressedScanline[iCodedSampleQuantity+0];
ucSample1 = qUncompressedScanline[iCodedSampleQuantity+1];
iRunLength = 2;
if ( ucSample0 != ucSample1 )
{
ucPrevSample = ucSample1;
for (int i1 = iCodedSampleQuantity+2; i1 < m_iWidth; i1++)
{
if ( qUncompressedScanline[i1] == ucPrevSample )
{
iRunLength--;
break;
}
if ( ++iRunLength == 127 )
break;
ucPrevSample = qUncompressedScanline[i1];
}
if ( bLastRunWasLiteral && iLastLiteralRunLength + iRunLength <= 127 )
{
qCompressedScanline[iLastLiteralCounterPos] += iRunLength;
for (int i1 = 0; i1 < iRunLength; i1++)
qCompressedScanline.Push(qUncompressedScanline[iCodedSampleQuantity++]);
iLastLiteralRunLength += iRunLength;
}
else
{
iLastLiteralCounterPos = qCompressedScanline.GetQuantity();
qCompressedScanline.Push(128 | iRunLength);
for (int i1 = 0; i1 < iRunLength; i1++)
qCompressedScanline.Push(qUncompressedScanline[iCodedSampleQuantity++]);
iLastLiteralRunLength = iRunLength;
bLastRunWasLiteral = true;
}
}
else
{
for (int i1 = iCodedSampleQuantity+2; i1 < m_iWidth; i1++)
{
if ( qUncompressedScanline[i1] != ucSample0 )
break;
if ( ++iRunLength == 127 )
break;
}
if ( iRunLength == 2 && bLastRunWasLiteral && iLastLiteralRunLength + 2 <= 127 )
{
qCompressedScanline[iLastLiteralCounterPos] += 2;
for (int i1 = 0; i1 < 2; i1++)
qCompressedScanline.Push(ucSample0);
iLastLiteralRunLength += 2;
iCodedSampleQuantity += 2;
}
else
{
qCompressedScanline.Push(iRunLength);
qCompressedScanline.Push(ucSample0);
iCodedSampleQuantity += iRunLength;
bLastRunWasLiteral = false;
}
}
}
qCompressedScanline.Push(0);
iOffset = qSaveStream.GetBytePosition();
qSaveStream.PushPositionState();
iInTabOff = iSLRecCount*4;
qSaveStream.SetBytePosition(512+iInTabOff);
qSaveStream.Write(iOffset);
iByteLength = qCompressedScanline.GetQuantity();
qSaveStream.SetBytePosition(iLengthsTablePos+iInTabOff);
qSaveStream.Write(iByteLength);
qSaveStream.PopPositionState();
qSaveStream.Write(qCompressedScanline.GetQuantity(),qCompressedScanline);
}
else // m_iBytesPerSample = 2
{
Array<unsigned short> qCompressedScanline;
for (/**/; /**/; /**/)
{
iSamplesLeft = m_iWidth - iCodedSampleQuantity;
if ( iSamplesLeft == 0 )
break;
if ( iSamplesLeft == 1 )
{
if ( bLastRunWasLiteral && iLastLiteralRunLength < 127 )
qCompressedScanline[iLastLiteralCounterPos]++;
else
qCompressedScanline.Push(129);
qCompressedScanline.Push(
ExtractUShortValue(qUncompressedScanline,iCodedSampleQuantity));
break;
}
usSample0 = ExtractUShortValue(qUncompressedScanline,iCodedSampleQuantity+0);
usSample1 = ExtractUShortValue(qUncompressedScanline,iCodedSampleQuantity+1);
iRunLength = 2;
if ( usSample0 != usSample1 )
{
usPrevSample = usSample1;
for (int i1 = iCodedSampleQuantity+2; i1 < m_iWidth; i1++)
{
if ( ExtractUShortValue(qUncompressedScanline,i1) == usPrevSample )
{
iRunLength--;
break;
}
if ( ++iRunLength == 127 )
break;
usPrevSample = ExtractUShortValue(qUncompressedScanline,i1);
}
if ( bLastRunWasLiteral && iLastLiteralRunLength + iRunLength <= 127 )
{
qCompressedScanline[iLastLiteralCounterPos] += iRunLength;
for (int i1 = 0; i1 < iRunLength; i1++)
{
qCompressedScanline.Push(
ExtractUShortValue(qUncompressedScanline,iCodedSampleQuantity++));
}
iLastLiteralRunLength += iRunLength;
}
else
{
iLastLiteralCounterPos = qCompressedScanline.GetQuantity();
qCompressedScanline.Push(128 | iRunLength);
for (int i1 = 0; i1 < iRunLength; i1++)
{
qCompressedScanline.Push(
ExtractUShortValue(qUncompressedScanline,iCodedSampleQuantity++));
}
iLastLiteralRunLength = iRunLength;
bLastRunWasLiteral = true;
}
}
else
{
for (int i1 = iCodedSampleQuantity+2; i1 < m_iWidth; i1++)
{
if ( ExtractUShortValue(qUncompressedScanline,i1) != usSample0 )
break;
if ( ++iRunLength == 127 )
break;
}
if ( iRunLength == 2 && bLastRunWasLiteral && iLastLiteralRunLength + 2 <= 127 )
{
qCompressedScanline[iLastLiteralCounterPos] += 2;
for (int i1 = 0; i1 < 2; i1++)
qCompressedScanline.Push(usSample0);
iLastLiteralRunLength += 2;
iCodedSampleQuantity += 2;
}
else
{
qCompressedScanline.Push(iRunLength);
qCompressedScanline.Push(usSample0);
iCodedSampleQuantity += iRunLength;
bLastRunWasLiteral = false;
}
}
}
qCompressedScanline.Push(0);
iOffset = qSaveStream.GetBytePosition();
qSaveStream.PushPositionState();
iInTabOff = iSLRecCount*4;
qSaveStream.SetBytePosition(512+iInTabOff);
qSaveStream.Write(iOffset);
iByteLength = qCompressedScanline.GetQuantity()*2;
qSaveStream.SetBytePosition(iLengthsTablePos+iInTabOff);
qSaveStream.Write(iByteLength);
qSaveStream.PopPositionState();
qSaveStream.Write(qCompressedScanline.GetQuantity(),qCompressedScanline);
}
iSLRecCount++;
}
qProgress.MakeAdvance();
}
}
qUncompressedScanline.RemoveAll();
// flush to the file
CONDITIONAL_THROW_EXCEPTION(qSaveStream.Finalize(),ET_CANNOT_ACCESS_FILE);
return true;
}
int main()
{
STUDENT student, student1, student2;
STUDENT* students = new STUDENT[3];
const char cFirstName[LEN_NAME] = "Vasya ";
const char cFirstName1[LEN_NAME] = "Petya ";
const char cFirstName2[LEN_NAME]= "Leshaa ";
strcpy (student.FirstName, cFirstName);
strcpy (student1.FirstName, cFirstName1);
strcpy (student2.FirstName, cFirstName2);
students[0] = student;
students[1] = student1;
students[2] = student2;
Array a (students, 3);
//delete[] students;
//size_t nQnt = a.GetQuantity();
//students = new STUDENT[nQnt];
//students = a.GetStudents();
for (size_t i = 0 ; i < 3; i++){
cout << students[i].FirstName<< endl;
}
for (size_t i = 0; i <5 ; i++){
cout << "ADD#"<< i <<".0"<<endl;
a.Add (students[0]);
cout << "ADD#"<< i <<".1"<<endl;
a.Add (students[0]);
cout << "ADD#"<< i <<".2"<<endl;
a.Add (students[0]);
}
delete[] students;
STUDENT** rStud = a.GetStudents();
size_t nQnt = a.GetQuantity();
cout << "Quantity is "<< nQnt<<endl;
for (size_t i = 0 ; i < nQnt; i++){
cout << i << ". "<< rStud[i]->FirstName<< endl;
}
STUDENT editStudent;
const char cFirstNameEdit[LEN_NAME]= "Edit ";
strcpy (editStudent.FirstName, cFirstNameEdit);
a.Edit (editStudent, 16);
cout<<"MAIN EDIT "<<endl;
a.Show ();
bool* arr = new bool[a.GetQuantity ()];
a.Find( "Vasya", COL_FIRST_NAME , arr );
cout<<"FIND "<<endl;
for (size_t i = 0; i < a.GetQuantity (); i++){
cout << i<<". "<< (bool)arr[i]<<endl;
}
delete[] arr;
a.DeleteStudent (14);
cout<<"DELETE "<<endl;
//a.Show ();
cout << "Hello World!" << endl;
return 0;
}