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some more lua-bindings

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* allow C memory allocation with lua-lifetime
* expose some ChanMapping methods
This commit is contained in:
Robin Gareus 2016-07-07 15:36:13 +02:00
parent 44a3f042a7
commit ef1e20f6a2
3 changed files with 8 additions and 2 deletions
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4
libs/ardour/ardour/dsp_filter.h
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@ -48,12 +48,13 @@ namespace ARDOUR { namespace DSP {
*/
class DspShm {
public:
DspShm ()
DspShm (size_t s = 0)
: _data (0)
, _size (0)
{
assert (sizeof(float) == sizeof (int32_t));
assert (sizeof(float) == sizeof (int));
allocate (s);
}
~DspShm () {
@ -65,6 +66,7 @@ namespace ARDOUR { namespace DSP {
* @param s size, total number of float or integer elements to store.
*/
void allocate (size_t s) {
if (s == _size) { return; }
_data = realloc (_data, sizeof(float) * s);
if (_data) { _size = s; }
}

2
libs/ardour/dsp_filter.cc
View file

@ -390,7 +390,7 @@ FFTSpectrum::execute ()
float
FFTSpectrum::power_at_bin (const uint32_t b, const float norm) const {
assert (b >= 0 && b < _fft_data_size);
assert (b < _fft_data_size);
const float a = _fft_power[b] * norm;
return a > 1e-12 ? 10.0 * fast_log10 (a) : -INFINITY;
}

4
libs/ardour/luabindings.cc
View file

@ -428,6 +428,9 @@ LuaBindings::common (lua_State* L)
.addVoidConstructor ()
.addFunction ("get", static_cast<uint32_t(ChanMapping::*)(DataType, uint32_t) const>(&ChanMapping::get))
.addFunction ("set", &ChanMapping::set)
.addFunction ("count", &ChanMapping::count)
.addFunction ("n_total", &ChanMapping::n_total)
.addFunction ("is_monotonic", &ChanMapping::is_monotonic)
.addConst ("Invalid", 4294967295U) // UINT32_MAX
.endClass ()
@ -1365,6 +1368,7 @@ LuaBindings::dsp (lua_State* L)
.endNamespace ()
.beginClass <DSP::DspShm> ("DspShm")
.addConstructor<void (*) (size_t)> ()
.addFunction ("allocate", &DSP::DspShm::allocate)
.addFunction ("clear", &DSP::DspShm::clear)
.addFunction ("to_float", &DSP::DspShm::to_float)