bool
OpenEXRInput::read_native_deep_scanlines (int ybegin, int yend, int z,
int firstchan, int nchans,
DeepData &deepdata)
{
if (m_deep_scanline_input_part == NULL) {
error ("called OpenEXRInput::read_native_deep_scanlines without an open file");
return false;
}
#ifdef USE_OPENEXR_VERSION2
try {
const PartInfo &part (m_parts[m_subimage]);
size_t npixels = (yend - ybegin) * m_spec.width;
// Set up the count and pointers arrays and the Imf framebuffer
std::vector<TypeDesc> channeltypes;
m_spec.get_channelformats (channeltypes);
deepdata.init (npixels, nchans, &channeltypes[firstchan],
&channeltypes[firstchan+nchans]);
Imf::DeepFrameBuffer frameBuffer;
Imf::Slice countslice (Imf::UINT,
(char *)(&deepdata.nsamples[0]
- m_spec.x
- ybegin*m_spec.width),
sizeof(unsigned int),
sizeof(unsigned int) * m_spec.width);
frameBuffer.insertSampleCountSlice (countslice);
for (int c = 0; c < nchans; ++c) {
Imf::DeepSlice slice (part.pixeltype[c+firstchan],
(char *)(&deepdata.pointers[c]
- m_spec.x * nchans
- ybegin*m_spec.width*nchans),
sizeof(void*) * nchans, // xstride of pointer array
sizeof(void*) * nchans*m_spec.width, // ystride of pointer array
part.chanbytes[c+firstchan]); // stride of data sample
frameBuffer.insert (m_spec.channelnames[c+firstchan].c_str(), slice);
}
m_deep_scanline_input_part->setFrameBuffer (frameBuffer);
// Get the sample counts for each pixel and compute the total
// number of samples and resize the data area appropriately.
m_deep_scanline_input_part->readPixelSampleCounts (ybegin, yend-1);
deepdata.alloc ();
// Read the pixels
m_deep_scanline_input_part->readPixels (ybegin, yend-1);
}
catch (const std::exception &e) {
error ("Failed OpenEXR read: %s", e.what());
return false;
}
return true;
#else
return false;
#endif
}
bool
OpenEXRInput::read_native_deep_scanlines (int ybegin, int yend, int z,
int chbegin, int chend,
DeepData &deepdata)
{
if (m_deep_scanline_input_part == NULL) {
error ("called OpenEXRInput::read_native_deep_scanlines without an open file");
return false;
}
try {
const PartInfo &part (m_parts[m_subimage]);
size_t npixels = (yend - ybegin) * m_spec.width;
chend = clamp (chend, chbegin+1, m_spec.nchannels);
int nchans = chend - chbegin;
// Set up the count and pointers arrays and the Imf framebuffer
std::vector<TypeDesc> channeltypes;
m_spec.get_channelformats (channeltypes);
deepdata.init (npixels, nchans,
array_view<const TypeDesc>(&channeltypes[chbegin], chend-chbegin),
spec().channelnames);
std::vector<unsigned int> all_samples (npixels);
std::vector<void*> pointerbuf (npixels*nchans);
Imf::DeepFrameBuffer frameBuffer;
Imf::Slice countslice (Imf::UINT,
(char *)(&all_samples[0]
- m_spec.x
- ybegin*m_spec.width),
sizeof(unsigned int),
sizeof(unsigned int) * m_spec.width);
frameBuffer.insertSampleCountSlice (countslice);
for (int c = chbegin; c < chend; ++c) {
Imf::DeepSlice slice (part.pixeltype[c],
(char *)(&pointerbuf[0]+(c-chbegin)
- m_spec.x * nchans
- ybegin*m_spec.width*nchans),
sizeof(void*) * nchans, // xstride of pointer array
sizeof(void*) * nchans*m_spec.width, // ystride of pointer array
deepdata.samplesize()); // stride of data sample
frameBuffer.insert (m_spec.channelnames[c].c_str(), slice);
}
m_deep_scanline_input_part->setFrameBuffer (frameBuffer);
// Get the sample counts for each pixel and compute the total
// number of samples and resize the data area appropriately.
m_deep_scanline_input_part->readPixelSampleCounts (ybegin, yend-1);
deepdata.set_all_samples (all_samples);
deepdata.get_pointers (pointerbuf);
// Read the pixels
m_deep_scanline_input_part->readPixels (ybegin, yend-1);
// deepdata.import_chansamp (pointerbuf);
} catch (const std::exception &e) {
error ("Failed OpenEXR read: %s", e.what());
return false;
} catch (...) { // catch-all for edge cases or compiler bugs
error ("Failed OpenEXR read: unknown exception");
return false;
}
return true;
}
