diff options
Diffstat (limited to 'Alc/ambdec.cpp')
| -rw-r--r-- | Alc/ambdec.cpp | 436 |
1 files changed, 0 insertions, 436 deletions
diff --git a/Alc/ambdec.cpp b/Alc/ambdec.cpp deleted file mode 100644 index 0991cfc5..00000000 --- a/Alc/ambdec.cpp +++ /dev/null @@ -1,436 +0,0 @@ - -#include "config.h" - -#include "ambdec.h" - -#include <cctype> -#include <cstring> -#include <algorithm> - -#include <limits> -#include <string> -#include <fstream> -#include <sstream> - -#include "logging.h" -#include "compat.h" - - -namespace { - -template<typename T, std::size_t N> -constexpr inline std::size_t size(const T(&)[N]) noexcept -{ return N; } - -int readline(std::istream &f, std::string &output) -{ - while(f.good() && f.peek() == '\n') - f.ignore(); - - return std::getline(f, output) && !output.empty(); -} - -bool read_clipped_line(std::istream &f, std::string &buffer) -{ - while(readline(f, buffer)) - { - std::size_t pos{0}; - while(pos < buffer.length() && std::isspace(buffer[pos])) - pos++; - buffer.erase(0, pos); - - std::size_t cmtpos{buffer.find_first_of('#')}; - if(cmtpos < buffer.length()) - buffer.resize(cmtpos); - while(!buffer.empty() && std::isspace(buffer.back())) - buffer.pop_back(); - - if(!buffer.empty()) - return true; - } - return false; -} - - -std::string read_word(std::istream &f) -{ - std::string ret; - f >> ret; - return ret; -} - -bool is_at_end(const std::string &buffer, std::size_t endpos) -{ - while(endpos < buffer.length() && std::isspace(buffer[endpos])) - ++endpos; - return !(endpos < buffer.length()); -} - - -bool load_ambdec_speakers(al::vector<AmbDecConf::SpeakerConf> &spkrs, const std::size_t num_speakers, std::istream &f, std::string &buffer) -{ - while(spkrs.size() < num_speakers) - { - std::istringstream istr{buffer}; - - std::string cmd{read_word(istr)}; - if(cmd.empty()) - { - if(!read_clipped_line(f, buffer)) - { - ERR("Unexpected end of file\n"); - return false; - } - continue; - } - - if(cmd == "add_spkr") - { - spkrs.emplace_back(); - AmbDecConf::SpeakerConf &spkr = spkrs.back(); - const size_t spkr_num{spkrs.size()}; - - istr >> spkr.Name; - if(istr.fail()) WARN("Name not specified for speaker %zu\n", spkr_num); - istr >> spkr.Distance; - if(istr.fail()) WARN("Distance not specified for speaker %zu\n", spkr_num); - istr >> spkr.Azimuth; - if(istr.fail()) WARN("Azimuth not specified for speaker %zu\n", spkr_num); - istr >> spkr.Elevation; - if(istr.fail()) WARN("Elevation not specified for speaker %zu\n", spkr_num); - istr >> spkr.Connection; - if(istr.fail()) TRACE("Connection not specified for speaker %zu\n", spkr_num); - } - else - { - ERR("Unexpected speakers command: %s\n", cmd.c_str()); - return false; - } - - istr.clear(); - const auto endpos = static_cast<std::size_t>(istr.tellg()); - if(!is_at_end(buffer, endpos)) - { - ERR("Unexpected junk on line: %s\n", buffer.c_str()+endpos); - return false; - } - buffer.clear(); - } - - return true; -} - -bool load_ambdec_matrix(float (&gains)[MAX_AMBI_ORDER+1], al::vector<AmbDecConf::CoeffArray> &matrix, const std::size_t maxrow, std::istream &f, std::string &buffer) -{ - bool gotgains{false}; - std::size_t cur{0u}; - while(cur < maxrow) - { - std::istringstream istr{buffer}; - - std::string cmd{read_word(istr)}; - if(cmd.empty()) - { - if(!read_clipped_line(f, buffer)) - { - ERR("Unexpected end of file\n"); - return false; - } - continue; - } - - if(cmd == "order_gain") - { - std::size_t curgain{0u}; - float value; - while(istr.good()) - { - istr >> value; - if(istr.fail()) break; - if(!istr.eof() && !std::isspace(istr.peek())) - { - ERR("Extra junk on gain %zu: %s\n", curgain+1, - buffer.c_str()+static_cast<std::size_t>(istr.tellg())); - return false; - } - if(curgain < size(gains)) - gains[curgain++] = value; - } - std::fill(std::begin(gains)+curgain, std::end(gains), 0.0f); - gotgains = true; - } - else if(cmd == "add_row") - { - matrix.emplace_back(); - AmbDecConf::CoeffArray &mtxrow = matrix.back(); - std::size_t curidx{0u}; - float value{}; - while(istr.good()) - { - istr >> value; - if(istr.fail()) break; - if(!istr.eof() && !std::isspace(istr.peek())) - { - ERR("Extra junk on matrix element %zux%zu: %s\n", curidx, - matrix.size(), buffer.c_str()+static_cast<std::size_t>(istr.tellg())); - matrix.pop_back(); - return false; - } - if(curidx < mtxrow.size()) - mtxrow[curidx++] = value; - } - std::fill(mtxrow.begin()+curidx, mtxrow.end(), 0.0f); - cur++; - } - else - { - ERR("Unexpected matrix command: %s\n", cmd.c_str()); - return false; - } - - istr.clear(); - const auto endpos = static_cast<std::size_t>(istr.tellg()); - if(!is_at_end(buffer, endpos)) - { - ERR("Unexpected junk on line: %s\n", buffer.c_str()+endpos); - return false; - } - buffer.clear(); - } - - if(!gotgains) - { - ERR("Matrix order_gain not specified\n"); - return false; - } - - return true; -} - -} // namespace - -int AmbDecConf::load(const char *fname) noexcept -{ - al::ifstream f{fname}; - if(!f.is_open()) - { - ERR("Failed to open: %s\n", fname); - return 0; - } - - std::size_t num_speakers{0u}; - std::string buffer; - while(read_clipped_line(f, buffer)) - { - std::istringstream istr{buffer}; - - std::string command{read_word(istr)}; - if(command.empty()) - { - ERR("Malformed line: %s\n", buffer.c_str()); - return 0; - } - - if(command == "/description") - istr >> Description; - else if(command == "/version") - { - istr >> Version; - if(!istr.eof() && !std::isspace(istr.peek())) - { - ERR("Extra junk after version: %s\n", - buffer.c_str()+static_cast<std::size_t>(istr.tellg())); - return 0; - } - if(Version != 3) - { - ERR("Unsupported version: %u\n", Version); - return 0; - } - } - else if(command == "/dec/chan_mask") - { - istr >> std::hex >> ChanMask >> std::dec; - if(!istr.eof() && !std::isspace(istr.peek())) - { - ERR("Extra junk after mask: %s\n", - buffer.c_str()+static_cast<std::size_t>(istr.tellg())); - return 0; - } - } - else if(command == "/dec/freq_bands") - { - istr >> FreqBands; - if(!istr.eof() && !std::isspace(istr.peek())) - { - ERR("Extra junk after freq_bands: %s\n", - buffer.c_str()+static_cast<std::size_t>(istr.tellg())); - return 0; - } - if(FreqBands != 1 && FreqBands != 2) - { - ERR("Invalid freq_bands value: %u\n", FreqBands); - return 0; - } - } - else if(command == "/dec/speakers") - { - istr >> num_speakers; - if(!istr.eof() && !std::isspace(istr.peek())) - { - ERR("Extra junk after speakers: %s\n", - buffer.c_str()+static_cast<std::size_t>(istr.tellg())); - return 0; - } - Speakers.reserve(num_speakers); - LFMatrix.reserve(num_speakers); - HFMatrix.reserve(num_speakers); - } - else if(command == "/dec/coeff_scale") - { - std::string scale = read_word(istr); - if(scale == "n3d") CoeffScale = AmbDecScale::N3D; - else if(scale == "sn3d") CoeffScale = AmbDecScale::SN3D; - else if(scale == "fuma") CoeffScale = AmbDecScale::FuMa; - else - { - ERR("Unsupported coeff scale: %s\n", scale.c_str()); - return 0; - } - } - else if(command == "/opt/xover_freq") - { - istr >> XOverFreq; - if(!istr.eof() && !std::isspace(istr.peek())) - { - ERR("Extra junk after xover_freq: %s\n", - buffer.c_str()+static_cast<std::size_t>(istr.tellg())); - return 0; - } - } - else if(command == "/opt/xover_ratio") - { - istr >> XOverRatio; - if(!istr.eof() && !std::isspace(istr.peek())) - { - ERR("Extra junk after xover_ratio: %s\n", - buffer.c_str()+static_cast<std::size_t>(istr.tellg())); - return 0; - } - } - else if(command == "/opt/input_scale" || command == "/opt/nfeff_comp" || - command == "/opt/delay_comp" || command == "/opt/level_comp") - { - /* Unused */ - read_word(istr); - } - else if(command == "/speakers/{") - { - const auto endpos = static_cast<std::size_t>(istr.tellg()); - if(!is_at_end(buffer, endpos)) - { - ERR("Unexpected junk on line: %s\n", buffer.c_str()+endpos); - return 0; - } - buffer.clear(); - - if(!load_ambdec_speakers(Speakers, num_speakers, f, buffer)) - return 0; - - if(!read_clipped_line(f, buffer)) - { - ERR("Unexpected end of file\n"); - return 0; - } - std::istringstream istr2{buffer}; - std::string endmark{read_word(istr2)}; - if(endmark != "/}") - { - ERR("Expected /} after speaker definitions, got %s\n", endmark.c_str()); - return 0; - } - istr.swap(istr2); - } - else if(command == "/lfmatrix/{" || command == "/hfmatrix/{" || command == "/matrix/{") - { - const auto endpos = static_cast<std::size_t>(istr.tellg()); - if(!is_at_end(buffer, endpos)) - { - ERR("Unexpected junk on line: %s\n", buffer.c_str()+endpos); - return 0; - } - buffer.clear(); - - if(FreqBands == 1) - { - if(command != "/matrix/{") - { - ERR("Unexpected \"%s\" type for a single-band decoder\n", command.c_str()); - return 0; - } - if(!load_ambdec_matrix(HFOrderGain, HFMatrix, num_speakers, f, buffer)) - return 0; - } - else - { - if(command == "/lfmatrix/{") - { - if(!load_ambdec_matrix(LFOrderGain, LFMatrix, num_speakers, f, buffer)) - return 0; - } - else if(command == "/hfmatrix/{") - { - if(!load_ambdec_matrix(HFOrderGain, HFMatrix, num_speakers, f, buffer)) - return 0; - } - else - { - ERR("Unexpected \"%s\" type for a dual-band decoder\n", command.c_str()); - return 0; - } - } - - if(!read_clipped_line(f, buffer)) - { - ERR("Unexpected end of file\n"); - return 0; - } - std::istringstream istr2{buffer}; - std::string endmark{read_word(istr2)}; - if(endmark != "/}") - { - ERR("Expected /} after matrix definitions, got %s\n", endmark.c_str()); - return 0; - } - istr.swap(istr2); - } - else if(command == "/end") - { - const auto endpos = static_cast<std::size_t>(istr.tellg()); - if(!is_at_end(buffer, endpos)) - { - ERR("Unexpected junk on end: %s\n", buffer.c_str()+endpos); - return 0; - } - - return 1; - } - else - { - ERR("Unexpected command: %s\n", command.c_str()); - return 0; - } - - istr.clear(); - const auto endpos = static_cast<std::size_t>(istr.tellg()); - if(!is_at_end(buffer, endpos)) - { - ERR("Unexpected junk on line: %s\n", buffer.c_str()+endpos); - return 0; - } - buffer.clear(); - } - ERR("Unexpected end of file\n"); - - return 0; -} |