size_t
AudioPlayer::Soundfile::_get_jack_sample_rate()
{
ECA_CONTROL_INTERFACE eca;
eca.command("cs-add dummy_chainsetup");
eca.command("c-add dummy_chain");
eca.command("ai-add jack");
eca.command("ao-add null");
eca.command("cs-connect");
if (eca.error())
{
throw soundfile_error("_get_jack_sample_rate(): " + eca.last_error());
}
eca.command("ai-get-format");
std::string str = eca.last_string();
eca.command("cs-disconnect");
eca.command("c-remove");
eca.command("cs-remove");
std::replace(str.begin(), str.end(), ',', ' ');
std::istringstream iss(str);
std::string format;
size_t channels, sample_rate;
iss >> format >> channels >> sample_rate;
if (iss.fail())
{
throw soundfile_error("Couldn't convert string for getting sample rate!");
}
assert(sample_rate >= 1);
return sample_rate;
}
std::string
AudioPlayer::Soundfile::get_format(const std::string& filename
, size_t& channels, size_t& sample_rate)
{
ECA_CONTROL_INTERFACE eca;
eca.command("cs-add dummy_chainsetup");
eca.command("c-add dummy_chain");
eca.command("ai-add sndfile,"
+ posixpathtools::get_escaped_filename(filename));
eca.command("ao-add null");
eca.command("cs-connect");
if (eca.error())
{
throw soundfile_error("get_format(): " + eca.last_error());
}
eca.command("ai-index-select 1");
eca.command("ai-get-format");
std::string str = eca.last_string();
eca.command("cs-disconnect");
eca.command("c-remove");
eca.command("cs-remove");
std::replace(str.begin(), str.end(), ',', ' ');
std::istringstream iss(str);
std::string format;
iss >> format >> channels >> sample_rate;
if (iss.fail())
{
throw soundfile_error("Couldn't convert format string!");
}
assert(sample_rate >= 1);
return format;
}
