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Add support for embedded single channel previews, fixes #4419

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This commit is contained in:
heckflosse 2018-03-20 22:20:25 +01:00
parent b29029527d
commit 59ebf99f63
8 changed files with 26 additions and 15 deletions
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17
rtengine/image16.cc
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@ -78,7 +78,7 @@ void Image16::getScanline (int row, unsigned char* buffer, int bps)
* void Image16::setScanline (int row, unsigned char* buffer, int bps, int minValue[3], int maxValue[3]);
* has not been implemented yet, because as of now, this method is called for IIOSF_FLOAT sample format only
*/
void Image16::setScanline (int row, unsigned char* buffer, int bps, float *minValue, float *maxValue)
void Image16::setScanline (int row, unsigned char* buffer, int bps, unsigned int numSamples, float *minValue, float *maxValue)
{
if (data == nullptr) {
@ -92,12 +92,17 @@ void Image16::setScanline (int row, unsigned char* buffer, int bps, float *minVa
case (IIOSF_UNSIGNED_CHAR): {
int ix = 0;
for (int i = 0; i < width; ++i) {
r(row, i) = static_cast<unsigned short>(buffer[ix++]) * 257;
g(row, i) = static_cast<unsigned short>(buffer[ix++]) * 257;
b(row, i) = static_cast<unsigned short>(buffer[ix++]) * 257;
if(numSamples == 1) {
for (int i = 0; i < width; ++i) {
r(row, i) = g(row, i) = b(row, i) = static_cast<unsigned short>(buffer[ix++]) * 257;
}
} else {
for (int i = 0; i < width; ++i) {
r(row, i) = static_cast<unsigned short>(buffer[ix++]) * 257;
g(row, i) = static_cast<unsigned short>(buffer[ix++]) * 257;
b(row, i) = static_cast<unsigned short>(buffer[ix++]) * 257;
}
}
break;
}

2
rtengine/image16.h
View File

@ -56,7 +56,7 @@ public:
return 8 * sizeof(unsigned short);
}
virtual void getScanline (int row, unsigned char* buffer, int bps);
virtual void setScanline (int row, unsigned char* buffer, int bps, float *minValue = nullptr, float *maxValue = nullptr);
virtual void setScanline (int row, unsigned char* buffer, int bps, unsigned int numSamples, float *minValue = nullptr, float *maxValue = nullptr);
// functions inherited from IImage16:
virtual MyMutex& getMutex ()

10
rtengine/image8.cc
View File

@ -55,7 +55,7 @@ void Image8::getScanline (int row, unsigned char* buffer, int bps)
}
}
void Image8::setScanline (int row, unsigned char* buffer, int bps, float *minValue, float *maxValue)
void Image8::setScanline (int row, unsigned char* buffer, int bps, unsigned int numSamples, float *minValue, float *maxValue)
{
if (data == nullptr) {
@ -67,7 +67,13 @@ void Image8::setScanline (int row, unsigned char* buffer, int bps, float *minVal
switch (sampleFormat) {
case (IIOSF_UNSIGNED_CHAR):
memcpy (data + row * width * 3u, buffer, width * 3);
if(numSamples == 1) {
for(size_t i = 0; i < static_cast<size_t>(width); ++i) {
data[row * width * 3 + 3 * i] = data[row * width * 3 + 3 * i + 1] = data[row * width * 3 + 3 * i + 2] = buffer[i];
}
} else {
memcpy (data + row * width * 3u, buffer, width * 3);
}
break;
case (IIOSF_UNSIGNED_SHORT): {

2
rtengine/image8.h
View File

@ -51,7 +51,7 @@ public:
return 8 * sizeof(unsigned char);
}
virtual void getScanline (int row, unsigned char* buffer, int bps);
virtual void setScanline (int row, unsigned char* buffer, int bps, float *minValue = nullptr, float *maxValue = nullptr);
virtual void setScanline (int row, unsigned char* buffer, int bps, unsigned int numSamples, float *minValue = nullptr, float *maxValue = nullptr);
// functions inherited from IImage*:
virtual MyMutex& getMutex ()

2
rtengine/imagefloat.cc
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@ -44,7 +44,7 @@ Imagefloat::~Imagefloat ()
}
// Call this method to handle floating points input values of different size
void Imagefloat::setScanline (int row, unsigned char* buffer, int bps, float *minValue, float *maxValue)
void Imagefloat::setScanline (int row, unsigned char* buffer, int bps, unsigned int numSamples, float *minValue, float *maxValue)
{
if (data == nullptr) {

2
rtengine/imagefloat.h
View File

@ -60,7 +60,7 @@ public:
return 8 * sizeof(float);
}
virtual void getScanline (int row, unsigned char* buffer, int bps);
virtual void setScanline (int row, unsigned char* buffer, int bps, float *minValue = nullptr, float *maxValue = nullptr);
virtual void setScanline (int row, unsigned char* buffer, int bps, unsigned int numSamples, float *minValue = nullptr, float *maxValue = nullptr);
// functions inherited from IImagefloat:
virtual MyMutex& getMutex ()

4
rtengine/imageio.cc
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@ -523,7 +523,7 @@ int ImageIO::loadJPEGFromMemory (const char* buffer, int bufsize)
return IMIO_READERROR;
}
setScanline (cinfo.output_scanline - 1, row, 8);
setScanline (cinfo.output_scanline - 1, row, 8, cinfo.num_components);
if (pl && !(cinfo.output_scanline % 100)) {
pl->setProgress ((double)(cinfo.output_scanline) / cinfo.output_height);
@ -860,7 +860,7 @@ int ImageIO::loadTIFF (Glib::ustring fname)
}
}
setScanline (row, linebuffer, bitspersample, nullptr, nullptr);
setScanline (row, linebuffer, bitspersample);
if (pl && !(row % 100)) {
pl->setProgress ((double)(row + 1) / height);

2
rtengine/imageio.h
View File

@ -113,7 +113,7 @@ public:
virtual int getBPS () = 0;
virtual void getScanline (int row, unsigned char* buffer, int bps) {}
virtual void setScanline (int row, unsigned char* buffer, int bps, float minValue[3] = nullptr, float maxValue[3] = nullptr) {}
virtual void setScanline (int row, unsigned char* buffer, int bps, unsigned int numSamples = 3, float minValue[3] = nullptr, float maxValue[3] = nullptr) {}
virtual bool readImage (Glib::ustring &fname, FILE *fh)
{