bool
OpenEXRInput::read_native_deep_tiles (int xbegin, int xend,
int ybegin, int yend,
int zbegin, int zend,
int chbegin, int chend,
DeepData &deepdata)
{
if (m_deep_tiled_input_part == NULL) {
error ("called OpenEXRInput::read_native_deep_tiles without an open file");
return false;
}
#ifdef USE_OPENEXR_VERSION2
try {
const PartInfo &part (m_parts[m_subimage]);
size_t width = (xend - xbegin);
size_t npixels = width * (yend - ybegin) * (zend - zbegin);
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, &channeltypes[chbegin],
&channeltypes[chend]);
Imf::DeepFrameBuffer frameBuffer;
Imf::Slice countslice (Imf::UINT,
(char *)(&deepdata.nsamples[0]
- xbegin
- ybegin*width),
sizeof(unsigned int),
sizeof(unsigned int) * width);
frameBuffer.insertSampleCountSlice (countslice);
for (int c = chbegin; c < chend; ++c) {
Imf::DeepSlice slice (part.pixeltype[c],
(char *)(&deepdata.pointers[c-chbegin]
- xbegin*nchans
- ybegin*width*nchans),
sizeof(void*) * nchans, // xstride of pointer array
sizeof(void*) * nchans*width, // ystride of pointer array
part.chanbytes[c]); // stride of data sample
frameBuffer.insert (m_spec.channelnames[c].c_str(), slice);
}
m_deep_tiled_input_part->setFrameBuffer (frameBuffer);
int xtiles = round_to_multiple (xend-xbegin, m_spec.tile_width) / m_spec.tile_width;
int ytiles = round_to_multiple (yend-ybegin, m_spec.tile_height) / m_spec.tile_height;
// Get the sample counts for each pixel and compute the total
// number of samples and resize the data area appropriately.
m_deep_tiled_input_part->readPixelSampleCounts (0, xtiles-1, 0, ytiles-1);
deepdata.alloc ();
// Read the pixels
m_deep_tiled_input_part->readTiles (0, xtiles-1, 0, ytiles-1,
m_miplevel, m_miplevel);
}
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_tiles (int xbegin, int xend,
int ybegin, int yend,
int zbegin, int zend,
int chbegin, int chend,
DeepData &deepdata)
{
if (m_deep_tiled_input_part == NULL) {
error ("called OpenEXRInput::read_native_deep_tiles without an open file");
return false;
}
try {
const PartInfo &part (m_parts[m_subimage]);
size_t width = (xend - xbegin);
size_t npixels = width * (yend - ybegin) * (zend - zbegin);
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]
- xbegin
- ybegin*width),
sizeof(unsigned int),
sizeof(unsigned int) * width);
frameBuffer.insertSampleCountSlice (countslice);
for (int c = chbegin; c < chend; ++c) {
Imf::DeepSlice slice (part.pixeltype[c],
(char *)(&pointerbuf[0]+(c-chbegin)
- xbegin*nchans
- ybegin*width*nchans),
sizeof(void*) * nchans, // xstride of pointer array
sizeof(void*) * nchans*width, // ystride of pointer array
deepdata.samplesize()); // stride of data sample
frameBuffer.insert (m_spec.channelnames[c].c_str(), slice);
}
m_deep_tiled_input_part->setFrameBuffer (frameBuffer);
int xtiles = round_to_multiple (xend-xbegin, m_spec.tile_width) / m_spec.tile_width;
int ytiles = round_to_multiple (yend-ybegin, m_spec.tile_height) / m_spec.tile_height;
int firstxtile = (xbegin - m_spec.x) / m_spec.tile_width;
int firstytile = (ybegin - m_spec.y) / m_spec.tile_height;
// Get the sample counts for each pixel and compute the total
// number of samples and resize the data area appropriately.
m_deep_tiled_input_part->readPixelSampleCounts (
firstxtile, firstxtile+xtiles-1,
firstytile, firstytile+ytiles-1);
deepdata.set_all_samples (all_samples);
deepdata.get_pointers (pointerbuf);
// Read the pixels
m_deep_tiled_input_part->readTiles (
firstxtile, firstxtile+xtiles-1,
firstytile, firstytile+ytiles-1,
m_miplevel, m_miplevel);
} 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;
}
