🛠️🐜 Antkeeper superbuild with dependencies included
https://antkeeper.com
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
378 lines
13 KiB
378 lines
13 KiB
|
|
#include "config.h"
|
|
|
|
#include "ambdec.h"
|
|
|
|
#include <algorithm>
|
|
#include <cctype>
|
|
#include <cstddef>
|
|
#include <iterator>
|
|
#include <sstream>
|
|
#include <string>
|
|
|
|
#include "alfstream.h"
|
|
#include "core/logging.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());
|
|
}
|
|
|
|
|
|
al::optional<std::string> load_ambdec_speakers(AmbDecConf::SpeakerConf *spkrs,
|
|
const std::size_t num_speakers, std::istream &f, std::string &buffer)
|
|
{
|
|
size_t cur_speaker{0};
|
|
while(cur_speaker < num_speakers)
|
|
{
|
|
std::istringstream istr{buffer};
|
|
|
|
std::string cmd{read_word(istr)};
|
|
if(cmd.empty())
|
|
{
|
|
if(!read_clipped_line(f, buffer))
|
|
return al::make_optional<std::string>("Unexpected end of file");
|
|
continue;
|
|
}
|
|
|
|
if(cmd == "add_spkr")
|
|
{
|
|
AmbDecConf::SpeakerConf &spkr = spkrs[cur_speaker++];
|
|
const size_t spkr_num{cur_speaker};
|
|
|
|
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
|
|
return al::make_optional("Unexpected speakers command: "+cmd);
|
|
|
|
istr.clear();
|
|
const auto endpos = static_cast<std::size_t>(istr.tellg());
|
|
if(!is_at_end(buffer, endpos))
|
|
return al::make_optional("Extra junk on line: " + buffer.substr(endpos));
|
|
buffer.clear();
|
|
}
|
|
|
|
return al::nullopt;
|
|
}
|
|
|
|
al::optional<std::string> load_ambdec_matrix(float (&gains)[MaxAmbiOrder+1],
|
|
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))
|
|
return al::make_optional<std::string>("Unexpected end of file");
|
|
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()))
|
|
return al::make_optional("Extra junk on gain "+std::to_string(curgain+1)+": "+
|
|
buffer.substr(static_cast<std::size_t>(istr.tellg())));
|
|
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")
|
|
{
|
|
AmbDecConf::CoeffArray &mtxrow = matrix[cur++];
|
|
std::size_t curidx{0u};
|
|
float value{};
|
|
while(istr.good())
|
|
{
|
|
istr >> value;
|
|
if(istr.fail()) break;
|
|
if(!istr.eof() && !std::isspace(istr.peek()))
|
|
return al::make_optional("Extra junk on matrix element "+
|
|
std::to_string(curidx)+"x"+std::to_string(cur-1)+": "+
|
|
buffer.substr(static_cast<std::size_t>(istr.tellg())));
|
|
if(curidx < mtxrow.size())
|
|
mtxrow[curidx++] = value;
|
|
}
|
|
std::fill(mtxrow.begin()+curidx, mtxrow.end(), 0.0f);
|
|
}
|
|
else
|
|
return al::make_optional("Unexpected matrix command: "+cmd);
|
|
|
|
istr.clear();
|
|
const auto endpos = static_cast<std::size_t>(istr.tellg());
|
|
if(!is_at_end(buffer, endpos))
|
|
return al::make_optional("Extra junk on line: " + buffer.substr(endpos));
|
|
buffer.clear();
|
|
}
|
|
|
|
if(!gotgains)
|
|
return al::make_optional<std::string>("Matrix order_gain not specified");
|
|
return al::nullopt;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
AmbDecConf::~AmbDecConf() = default;
|
|
|
|
|
|
al::optional<std::string> AmbDecConf::load(const char *fname) noexcept
|
|
{
|
|
al::ifstream f{fname};
|
|
if(!f.is_open())
|
|
return al::make_optional<std::string>("Failed to open file");
|
|
|
|
bool speakers_loaded{false};
|
|
bool matrix_loaded{false};
|
|
bool lfmatrix_loaded{false};
|
|
std::string buffer;
|
|
while(read_clipped_line(f, buffer))
|
|
{
|
|
std::istringstream istr{buffer};
|
|
|
|
std::string command{read_word(istr)};
|
|
if(command.empty())
|
|
return al::make_optional("Malformed line: "+buffer);
|
|
|
|
if(command == "/description")
|
|
readline(istr, Description);
|
|
else if(command == "/version")
|
|
{
|
|
istr >> Version;
|
|
if(!istr.eof() && !std::isspace(istr.peek()))
|
|
return al::make_optional("Extra junk after version: " +
|
|
buffer.substr(static_cast<std::size_t>(istr.tellg())));
|
|
if(Version != 3)
|
|
return al::make_optional("Unsupported version: "+std::to_string(Version));
|
|
}
|
|
else if(command == "/dec/chan_mask")
|
|
{
|
|
if(ChanMask)
|
|
return al::make_optional<std::string>("Duplicate chan_mask definition");
|
|
|
|
istr >> std::hex >> ChanMask >> std::dec;
|
|
if(!istr.eof() && !std::isspace(istr.peek()))
|
|
return al::make_optional("Extra junk after mask: " +
|
|
buffer.substr(static_cast<std::size_t>(istr.tellg())));
|
|
|
|
if(!ChanMask)
|
|
return al::make_optional("Invalid chan_mask: "+std::to_string(ChanMask));
|
|
}
|
|
else if(command == "/dec/freq_bands")
|
|
{
|
|
if(FreqBands)
|
|
return al::make_optional<std::string>("Duplicate freq_bands");
|
|
|
|
istr >> FreqBands;
|
|
if(!istr.eof() && !std::isspace(istr.peek()))
|
|
return al::make_optional("Extra junk after freq_bands: " +
|
|
buffer.substr(static_cast<std::size_t>(istr.tellg())));
|
|
|
|
if(FreqBands != 1 && FreqBands != 2)
|
|
return al::make_optional("Invalid freq_bands: "+std::to_string(FreqBands));
|
|
}
|
|
else if(command == "/dec/speakers")
|
|
{
|
|
if(NumSpeakers)
|
|
return al::make_optional<std::string>("Duplicate speakers");
|
|
|
|
istr >> NumSpeakers;
|
|
if(!istr.eof() && !std::isspace(istr.peek()))
|
|
return al::make_optional("Extra junk after speakers: " +
|
|
buffer.substr(static_cast<std::size_t>(istr.tellg())));
|
|
|
|
if(!NumSpeakers)
|
|
return al::make_optional("Invalid speakers: "+std::to_string(NumSpeakers));
|
|
Speakers = std::make_unique<SpeakerConf[]>(NumSpeakers);
|
|
}
|
|
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
|
|
return al::make_optional("Unexpected coeff_scale: "+scale);
|
|
}
|
|
else if(command == "/opt/xover_freq")
|
|
{
|
|
istr >> XOverFreq;
|
|
if(!istr.eof() && !std::isspace(istr.peek()))
|
|
return al::make_optional("Extra junk after xover_freq: " +
|
|
buffer.substr(static_cast<std::size_t>(istr.tellg())));
|
|
}
|
|
else if(command == "/opt/xover_ratio")
|
|
{
|
|
istr >> XOverRatio;
|
|
if(!istr.eof() && !std::isspace(istr.peek()))
|
|
return al::make_optional("Extra junk after xover_ratio: " +
|
|
buffer.substr(static_cast<std::size_t>(istr.tellg())));
|
|
}
|
|
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/{")
|
|
{
|
|
if(!NumSpeakers)
|
|
return al::make_optional<std::string>("Speakers defined without a count");
|
|
|
|
const auto endpos = static_cast<std::size_t>(istr.tellg());
|
|
if(!is_at_end(buffer, endpos))
|
|
return al::make_optional("Extra junk on line: " + buffer.substr(endpos));
|
|
buffer.clear();
|
|
|
|
if(auto err = load_ambdec_speakers(Speakers.get(), NumSpeakers, f, buffer))
|
|
return err;
|
|
speakers_loaded = true;
|
|
|
|
if(!read_clipped_line(f, buffer))
|
|
return al::make_optional<std::string>("Unexpected end of file");
|
|
std::istringstream istr2{buffer};
|
|
std::string endmark{read_word(istr2)};
|
|
if(endmark != "/}")
|
|
return al::make_optional("Expected /} after speaker definitions, got "+endmark);
|
|
istr.swap(istr2);
|
|
}
|
|
else if(command == "/lfmatrix/{" || command == "/hfmatrix/{" || command == "/matrix/{")
|
|
{
|
|
if(!NumSpeakers)
|
|
return al::make_optional<std::string>("Matrix defined without a count");
|
|
const auto endpos = static_cast<std::size_t>(istr.tellg());
|
|
if(!is_at_end(buffer, endpos))
|
|
return al::make_optional("Extra junk on line: " + buffer.substr(endpos));
|
|
buffer.clear();
|
|
|
|
if(!Matrix)
|
|
{
|
|
Matrix = std::make_unique<CoeffArray[]>(NumSpeakers * FreqBands);
|
|
LFMatrix = Matrix.get();
|
|
HFMatrix = LFMatrix + NumSpeakers*(FreqBands-1);
|
|
}
|
|
|
|
if(FreqBands == 1)
|
|
{
|
|
if(command != "/matrix/{")
|
|
return al::make_optional(
|
|
"Unexpected \""+command+"\" type for a single-band decoder");
|
|
if(auto err = load_ambdec_matrix(HFOrderGain, HFMatrix, NumSpeakers, f, buffer))
|
|
return err;
|
|
matrix_loaded = true;
|
|
}
|
|
else
|
|
{
|
|
if(command == "/lfmatrix/{")
|
|
{
|
|
if(auto err=load_ambdec_matrix(LFOrderGain, LFMatrix, NumSpeakers, f, buffer))
|
|
return err;
|
|
lfmatrix_loaded = true;
|
|
}
|
|
else if(command == "/hfmatrix/{")
|
|
{
|
|
if(auto err=load_ambdec_matrix(HFOrderGain, HFMatrix, NumSpeakers, f, buffer))
|
|
return err;
|
|
matrix_loaded = true;
|
|
}
|
|
else
|
|
return al::make_optional(
|
|
"Unexpected \""+command+"\" type for a dual-band decoder");
|
|
}
|
|
|
|
if(!read_clipped_line(f, buffer))
|
|
return al::make_optional<std::string>("Unexpected end of file");
|
|
std::istringstream istr2{buffer};
|
|
std::string endmark{read_word(istr2)};
|
|
if(endmark != "/}")
|
|
return al::make_optional("Expected /} after matrix definitions, got "+endmark);
|
|
istr.swap(istr2);
|
|
}
|
|
else if(command == "/end")
|
|
{
|
|
const auto endpos = static_cast<std::size_t>(istr.tellg());
|
|
if(!is_at_end(buffer, endpos))
|
|
return al::make_optional("Extra junk on end: " + buffer.substr(endpos));
|
|
|
|
if(!speakers_loaded || !matrix_loaded || (FreqBands == 2 && !lfmatrix_loaded))
|
|
return al::make_optional<std::string>("No decoder defined");
|
|
|
|
return al::nullopt;
|
|
}
|
|
else
|
|
return al::make_optional("Unexpected command: " + command);
|
|
|
|
istr.clear();
|
|
const auto endpos = static_cast<std::size_t>(istr.tellg());
|
|
if(!is_at_end(buffer, endpos))
|
|
return al::make_optional("Extra junk on line: " + buffer.substr(endpos));
|
|
buffer.clear();
|
|
}
|
|
return al::make_optional<std::string>("Unexpected end of file");
|
|
}
|