From 4b8423459332cc5ff6ba3b49f2b1d30738486f96 Mon Sep 17 00:00:00 2001 From: Peter Munch Date: Sun, 18 Sep 2022 22:20:37 +0200 Subject: [PATCH] Add DataOutBase::CompressionLevel::plain_text --- include/deal.II/base/data_out_base.h | 11 +- source/base/data_out_base.cc | 204 ++++--- .../data_out_base_vtu_compression_levels.cc | 5 +- ...u_compression_levels.with_zlib=true.output | 570 ++++++++++++++++++ 4 files changed, 711 insertions(+), 79 deletions(-) diff --git a/include/deal.II/base/data_out_base.h b/include/deal.II/base/data_out_base.h index 1eee188989..1b3a1ae174 100644 --- a/include/deal.II/base/data_out_base.h +++ b/include/deal.II/base/data_out_base.h @@ -222,7 +222,10 @@ namespace DataOutBase { /** * An enum for different levels of compression used in several places - * to determine zlib compression levels. + * to determine zlib compression levels for binary output. At some + * places, it is possible to output the data also as plain text as + * an alternative, which is convenient for debugging. We use + * this flag to indicate such an output as well. */ enum class CompressionLevel { @@ -243,7 +246,11 @@ namespace DataOutBase * Use the default compression algorithm. This is a compromise between * speed and file size. */ - default_compression + default_compression, + /** + * Output as plain text (ASCII) if available. + */ + plain_text }; diff --git a/source/base/data_out_base.cc b/source/base/data_out_base.cc index 0ebfb4e285..60e90d8e47 100644 --- a/source/base/data_out_base.cc +++ b/source/base/data_out_base.cc @@ -1921,20 +1921,25 @@ namespace void VtuStream::write_point(const unsigned int, const Point &p) { -#if !defined(DEAL_II_WITH_ZLIB) - // write out coordinates - stream << p; - // fill with zeroes - for (unsigned int i = dim; i < 3; ++i) - stream << " 0"; - stream << '\n'; -#else - // if we want to compress, then first collect all the data in an array - for (unsigned int i = 0; i < dim; ++i) - vertices.push_back(p[i]); - for (unsigned int i = dim; i < 3; ++i) - vertices.push_back(0); +#ifdef DEAL_II_WITH_ZLIB + if (flags.compression_level != DataOutBase::CompressionLevel::plain_text) + { + // if we want to compress, then first collect all the data in an array + for (unsigned int i = 0; i < dim; ++i) + vertices.push_back(p[i]); + for (unsigned int i = dim; i < 3; ++i) + vertices.push_back(0); + } + else #endif + { + // write out coordinates + stream << p; + // fill with zeroes + for (unsigned int i = dim; i < 3; ++i) + stream << " 0"; + stream << '\n'; + } } @@ -1942,10 +1947,13 @@ namespace VtuStream::flush_points() { #ifdef DEAL_II_WITH_ZLIB - // compress the data we have in memory and write them to the stream. then - // release the data - *this << vertices << '\n'; - vertices.clear(); + if (flags.compression_level != DataOutBase::CompressionLevel::plain_text) + { + // compress the data we have in memory and write them to the stream. + // then release the data + *this << vertices << '\n'; + vertices.clear(); + } #endif } @@ -1958,41 +1966,47 @@ namespace unsigned int d2, unsigned int d3) { -#if !defined(DEAL_II_WITH_ZLIB) - stream << start; - if (dim >= 1) +#ifdef DEAL_II_WITH_ZLIB + if (flags.compression_level != DataOutBase::CompressionLevel::plain_text) { - stream << '\t' << start + d1; - if (dim >= 2) + cells.push_back(start); + if (dim >= 1) { - stream << '\t' << start + d2 + d1 << '\t' << start + d2; - if (dim >= 3) + cells.push_back(start + d1); + if (dim >= 2) { - stream << '\t' << start + d3 << '\t' << start + d3 + d1 << '\t' - << start + d3 + d2 + d1 << '\t' << start + d3 + d2; + cells.push_back(start + d2 + d1); + cells.push_back(start + d2); + if (dim >= 3) + { + cells.push_back(start + d3); + cells.push_back(start + d3 + d1); + cells.push_back(start + d3 + d2 + d1); + cells.push_back(start + d3 + d2); + } } } } - stream << '\n'; -#else - cells.push_back(start); - if (dim >= 1) + else +#endif { - cells.push_back(start + d1); - if (dim >= 2) + stream << start; + if (dim >= 1) { - cells.push_back(start + d2 + d1); - cells.push_back(start + d2); - if (dim >= 3) + stream << '\t' << start + d1; + if (dim >= 2) { - cells.push_back(start + d3); - cells.push_back(start + d3 + d1); - cells.push_back(start + d3 + d2 + d1); - cells.push_back(start + d3 + d2); + stream << '\t' << start + d2 + d1 << '\t' << start + d2; + if (dim >= 3) + { + stream << '\t' << start + d3 << '\t' << start + d3 + d1 + << '\t' << start + d3 + d2 + d1 << '\t' + << start + d3 + d2; + } } } + stream << '\n'; } -#endif } void @@ -2005,17 +2019,23 @@ namespace static const std::array table = {{0, 1, 3, 2, 4}}; -#if !defined(DEAL_II_WITH_ZLIB) - for (unsigned int i = 0; i < n_points; ++i) - stream << '\t' - << start + - (reference_cell == ReferenceCells::Pyramid ? table[i] : i); - stream << '\n'; -#else - for (unsigned int i = 0; i < n_points; ++i) - cells.push_back( - start + (reference_cell == ReferenceCells::Pyramid ? table[i] : i)); +#ifdef DEAL_II_WITH_ZLIB + if (flags.compression_level != DataOutBase::CompressionLevel::plain_text) + { + for (unsigned int i = 0; i < n_points; ++i) + cells.push_back( + start + (reference_cell == ReferenceCells::Pyramid ? table[i] : i)); + } + else #endif + { + for (unsigned int i = 0; i < n_points; ++i) + stream << '\t' + << start + (reference_cell == ReferenceCells::Pyramid ? + table[i] : + i); + stream << '\n'; + } } template @@ -2024,24 +2044,32 @@ namespace const unsigned int start, const std::vector &connectivity) { -#if !defined(DEAL_II_WITH_ZLIB) - for (const auto &c : connectivity) - stream << '\t' << start + c; - stream << '\n'; -#else - for (const auto &c : connectivity) - cells.push_back(start + c); +#ifdef DEAL_II_WITH_ZLIB + if (flags.compression_level != DataOutBase::CompressionLevel::plain_text) + { + for (const auto &c : connectivity) + cells.push_back(start + c); + } + else #endif + { + for (const auto &c : connectivity) + stream << '\t' << start + c; + stream << '\n'; + } } void VtuStream::flush_cells() { #ifdef DEAL_II_WITH_ZLIB - // compress the data we have in memory and write them to the stream. then - // release the data - *this << cells << '\n'; - cells.clear(); + if (flags.compression_level != DataOutBase::CompressionLevel::plain_text) + { + // compress the data we have in memory and write them to the stream. + // then release the data + *this << cells << '\n'; + cells.clear(); + } #endif } @@ -2051,13 +2079,18 @@ namespace VtuStream::operator<<(const std::vector &data) { #ifdef DEAL_II_WITH_ZLIB - // compress the data we have in memory and write them to the stream. then - // release the data - write_compressed_block(data, flags, stream); -#else - for (unsigned int i = 0; i < data.size(); ++i) - stream << data[i] << ' '; + if (flags.compression_level != DataOutBase::CompressionLevel::plain_text) + { + // compress the data we have in memory and write them to the stream. + // then release the data + write_compressed_block(data, flags, stream); + } + else #endif + { + for (unsigned int i = 0; i < data.size(); ++i) + stream << data[i] << ' '; + } return stream; } @@ -5804,7 +5837,8 @@ namespace DataOutBase out << "\n-->\n"; out << " cell_types; -#else std::vector cell_types; -#endif cell_types.reserve(n_cells); unsigned int first_vertex_of_patch = 0; @@ -6089,7 +6119,21 @@ namespace DataOutBase << ascii_or_binary << "\">\n"; // this should compress well :-) - vtu_out << cell_types; +#ifdef DEAL_II_WITH_ZLIB + if (flags.compression_level != CompressionLevel::plain_text) + { + std::vector cell_types_uint8_t(cell_types.size()); + for (unsigned int i = 0; i < cell_types.size(); ++i) + cell_types_uint8_t[i] = static_cast(cell_types[i]); + + vtu_out << cell_types_uint8_t; + } + else +#endif + { + vtu_out << cell_types; + } + out << '\n'; out << " \n"; out << " \n"; @@ -7642,6 +7686,9 @@ namespace DataOutBase { boost::iostreams::filtering_ostream f; + AssertThrow(compression != CompressionLevel::plain_text, + ExcNotImplemented()); + if (compression != CompressionLevel::no_compression) # ifdef DEAL_II_WITH_ZLIB f.push(boost::iostreams::zlib_compressor( @@ -9335,6 +9382,11 @@ DataOutReader::read_whole_parallel_file(std::istream &in) std::vector temp_buffer(chunk_sizes[n]); in.read(temp_buffer.data(), chunk_sizes[n]); + AssertThrow(static_cast( + header.compression) != + DataOutBase::CompressionLevel::plain_text, + ExcNotImplemented()); + boost::iostreams::filtering_istreambuf f; if (static_cast(header.compression) != DataOutBase::CompressionLevel::no_compression) diff --git a/tests/data_out/data_out_base_vtu_compression_levels.cc b/tests/data_out/data_out_base_vtu_compression_levels.cc index 94dc6dcaeb..19dc89ae3f 100644 --- a/tests/data_out/data_out_base_vtu_compression_levels.cc +++ b/tests/data_out/data_out_base_vtu_compression_levels.cc @@ -56,7 +56,7 @@ template void check_all(std::ostream &log) { - for (unsigned int i = 0; i < 4; ++i) + for (unsigned int i = 0; i < 5; ++i) { DataOutBase::VtkFlags flags; switch (i) @@ -76,6 +76,9 @@ check_all(std::ostream &log) flags.compression_level = DataOutBase::CompressionLevel::default_compression; break; + case (4): + flags.compression_level = DataOutBase::CompressionLevel::plain_text; + break; default: Assert(false, ExcInternalError()); } diff --git a/tests/data_out/data_out_base_vtu_compression_levels.with_zlib=true.output b/tests/data_out/data_out_base_vtu_compression_levels.with_zlib=true.output index 9dcf9755be..40b33aa0f0 100644 --- a/tests/data_out/data_out_base_vtu_compression_levels.with_zlib=true.output +++ b/tests/data_out/data_out_base_vtu_compression_levels.with_zlib=true.output @@ -191,6 +191,76 @@ AQAAADgAAAA4AAAAGAAAAA==eJxjYACBBnsGBO2AynbAwm9wAACFNAV9 ============================== +11-4.vtu +============================== + + + + + + + +0 0 0 +1 0 0 +1 0 0 +1.5 0 0 +2 0 0 +2 0 0 +2.33333 0 0 +2.66667 0 0 +3 0 0 +3 0 0 +3.25 0 0 +3.5 0 0 +3.75 0 0 +4 0 0 + + + + + +0 1 +2 3 +3 4 +5 6 +6 7 +7 8 +9 10 +10 11 +11 12 +12 13 + + +2 4 6 8 10 12 14 16 18 20 + + +3 3 3 3 3 3 3 3 3 3 + + + + +0 1 1 1.5 2 2 2.33333 2.66667 3 3 3.25 3.5 3.75 4 + + +0 0 1 1 1 2 2 2 2 3 3 3 3 3 + + +0 0 1 1 1 2 2 2 2 3 3 3 3 3 + + +0 0 1 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