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livetrax/libs/ardour/lua_api.cc

837 lines
22 KiB
C++

/*
* Copyright (C) 2016 Robin Gareus <robin@gareus.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <cstring>
#include <vamp-hostsdk/PluginLoader.h>
#include "pbd/compose.h"
#include "pbd/error.h"
#include "pbd/failed_constructor.h"
#include "ardour/lua_api.h"
#include "ardour/luaproc.h"
#include "ardour/luascripting.h"
#include "ardour/plugin.h"
#include "ardour/plugin_insert.h"
#include "ardour/plugin_manager.h"
#include "ardour/readable.h"
#include "LuaBridge/LuaBridge.h"
#include "pbd/i18n.h"
using namespace ARDOUR;
using namespace PBD;
using namespace std;
int
ARDOUR::LuaAPI::datatype_ctor_null (lua_State *L)
{
DataType dt (DataType::NIL);
luabridge::Stack <DataType>::push (L, dt);
return 1;
}
int
ARDOUR::LuaAPI::datatype_ctor_audio (lua_State *L)
{
DataType dt (DataType::AUDIO);
// NB luabridge will copy construct the object and manage lifetime.
luabridge::Stack <DataType>::push (L, dt);
return 1;
}
int
ARDOUR::LuaAPI::datatype_ctor_midi (lua_State *L)
{
DataType dt (DataType::MIDI);
luabridge::Stack <DataType>::push (L, dt);
return 1;
}
boost::shared_ptr<Processor>
ARDOUR::LuaAPI::nil_processor ()
{
return boost::shared_ptr<Processor> ();
}
boost::shared_ptr<Processor>
ARDOUR::LuaAPI::new_luaproc (Session *s, const string& name)
{
if (!s) {
return boost::shared_ptr<Processor> ();
}
LuaScriptInfoPtr spi;
ARDOUR::LuaScriptList & _scripts (LuaScripting::instance ().scripts (LuaScriptInfo::DSP));
for (LuaScriptList::const_iterator i = _scripts.begin (); i != _scripts.end (); ++i) {
if (name == (*i)->name) {
spi = *i;
break;
}
}
if (!spi) {
warning << _("Script with given name was not found\n");
return boost::shared_ptr<Processor> ();
}
PluginPtr p;
try {
LuaPluginInfoPtr lpi (new LuaPluginInfo (spi));
p = (lpi->load (*s));
} catch (...) {
warning << _("Failed to instantiate Lua Processor\n");
return boost::shared_ptr<Processor> ();
}
return boost::shared_ptr<Processor> (new PluginInsert (*s, p));
}
PluginInfoPtr
ARDOUR::LuaAPI::new_plugin_info (const string& name, ARDOUR::PluginType type)
{
PluginManager& manager = PluginManager::instance ();
PluginInfoList all_plugs;
all_plugs.insert (all_plugs.end (), manager.ladspa_plugin_info ().begin (), manager.ladspa_plugin_info ().end ());
all_plugs.insert (all_plugs.end (), manager.lua_plugin_info ().begin (), manager.lua_plugin_info ().end ());
#ifdef WINDOWS_VST_SUPPORT
all_plugs.insert (all_plugs.end (), manager.windows_vst_plugin_info ().begin (), manager.windows_vst_plugin_info ().end ());
#endif
#ifdef LXVST_SUPPORT
all_plugs.insert (all_plugs.end (), manager.lxvst_plugin_info ().begin (), manager.lxvst_plugin_info ().end ());
#endif
#ifdef AUDIOUNIT_SUPPORT
all_plugs.insert (all_plugs.end (), manager.au_plugin_info ().begin (), manager.au_plugin_info ().end ());
#endif
#ifdef LV2_SUPPORT
all_plugs.insert (all_plugs.end (), manager.lv2_plugin_info ().begin (), manager.lv2_plugin_info ().end ());
#endif
all_plugs.insert (all_plugs.end (), manager.lua_plugin_info ().begin (), manager.lua_plugin_info ().end ());
for (PluginInfoList::const_iterator i = all_plugs.begin (); i != all_plugs.end (); ++i) {
if (((*i)->name == name || (*i)->unique_id == name) && (*i)->type == type) {
return *i;
}
}
return PluginInfoPtr ();
}
boost::shared_ptr<Processor>
ARDOUR::LuaAPI::new_plugin (Session *s, const string& name, ARDOUR::PluginType type, const string& preset)
{
if (!s) {
return boost::shared_ptr<Processor> ();
}
PluginInfoPtr pip = new_plugin_info (name, type);
if (!pip) {
return boost::shared_ptr<Processor> ();
}
PluginPtr p = pip->load (*s);
if (!p) {
return boost::shared_ptr<Processor> ();
}
if (!preset.empty ()) {
const Plugin::PresetRecord *pr = p->preset_by_label (preset);
if (pr) {
p->load_preset (*pr);
}
}
return boost::shared_ptr<Processor> (new PluginInsert (*s, p));
}
bool
ARDOUR::LuaAPI::set_plugin_insert_param (boost::shared_ptr<PluginInsert> pi, uint32_t which, float val)
{
boost::shared_ptr<Plugin> plugin = pi->plugin ();
if (!plugin) { return false; }
bool ok=false;
uint32_t controlid = plugin->nth_parameter (which, ok);
if (!ok) { return false; }
if (!plugin->parameter_is_input (controlid)) { return false; }
ParameterDescriptor pd;
if (plugin->get_parameter_descriptor (controlid, pd) != 0) { return false; }
if (val < pd.lower || val > pd.upper) { return false; }
boost::shared_ptr<AutomationControl> c = pi->automation_control (Evoral::Parameter (PluginAutomation, 0, controlid));
c->set_value (val, PBD::Controllable::NoGroup);
return true;
}
float
ARDOUR::LuaAPI::get_plugin_insert_param (boost::shared_ptr<PluginInsert> pi, uint32_t which, bool &ok)
{
ok=false;
boost::shared_ptr<Plugin> plugin = pi->plugin ();
if (!plugin) { return 0; }
uint32_t controlid = plugin->nth_parameter (which, ok);
if (!ok) { return 0; }
return plugin->get_parameter ( controlid );
}
bool
ARDOUR::LuaAPI::set_processor_param (boost::shared_ptr<Processor> proc, uint32_t which, float val)
{
boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (proc);
if (!pi) { return false; }
return set_plugin_insert_param (pi, which, val);
}
float
ARDOUR::LuaAPI::get_processor_param (boost::shared_ptr<Processor> proc, uint32_t which, bool &ok)
{
ok=false;
boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (proc);
if (!pi) { return false; }
return get_plugin_insert_param (pi, which, ok);
}
bool
ARDOUR::LuaAPI::reset_processor_to_default ( boost::shared_ptr<Processor> proc )
{
boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (proc);
if (pi) {
pi->reset_parameters_to_default();
return true;
}
return false;
}
int
ARDOUR::LuaAPI::plugin_automation (lua_State *L)
{
typedef boost::shared_ptr<Processor> T;
int top = lua_gettop (L);
if (top < 2) {
return luaL_argerror (L, 1, "invalid number of arguments, :plugin_automation (plugin, parameter_number)");
}
T* const p = luabridge::Userdata::get<T> (L, 1, false);
uint32_t which = luabridge::Stack<uint32_t>::get (L, 2);
if (!p) {
return luaL_error (L, "Invalid pointer to Ardour:Processor");
}
boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (*p);
if (!pi) {
return luaL_error (L, "Given Processor is not a Plugin Insert");
}
boost::shared_ptr<Plugin> plugin = pi->plugin ();
if (!plugin) {
return luaL_error (L, "Given Processor is not a Plugin");
}
bool ok=false;
uint32_t controlid = plugin->nth_parameter (which, ok);
if (!ok) {
return luaL_error (L, "Invalid Parameter");
}
if (!plugin->parameter_is_input (controlid)) {
return luaL_error (L, "Given Parameter is not an input");
}
ParameterDescriptor pd;
if (plugin->get_parameter_descriptor (controlid, pd) != 0) {
return luaL_error (L, "Cannot describe parameter");
}
boost::shared_ptr<AutomationControl> c = pi->automation_control (Evoral::Parameter (PluginAutomation, 0, controlid));
luabridge::Stack<boost::shared_ptr<AutomationList> >::push (L, c->alist ());
luabridge::Stack<boost::shared_ptr<Evoral::ControlList> >::push (L, c->list ());
luabridge::Stack<ParameterDescriptor>::push (L, pd);
return 3;
}
int
ARDOUR::LuaAPI::sample_to_timecode (lua_State *L)
{
int top = lua_gettop (L);
if (top < 3) {
return luaL_argerror (L, 1, "invalid number of arguments sample_to_timecode (TimecodeFormat, sample_rate, sample)");
}
typedef Timecode::TimecodeFormat T;
T tf = luabridge::Stack<T>::get (L, 1);
double sample_rate = luabridge::Stack<double>::get (L, 2);
int64_t sample = luabridge::Stack<int64_t>::get (L, 3);
Timecode::Time timecode;
Timecode::sample_to_timecode (
sample, timecode, false, false,
Timecode::timecode_to_frames_per_second (tf),
Timecode::timecode_has_drop_frames (tf),
sample_rate,
0, false, 0);
luabridge::Stack<uint32_t>::push (L, timecode.hours);
luabridge::Stack<uint32_t>::push (L, timecode.minutes);
luabridge::Stack<uint32_t>::push (L, timecode.seconds);
luabridge::Stack<uint32_t>::push (L, timecode.frames);
return 4;
}
int
ARDOUR::LuaAPI::timecode_to_sample (lua_State *L)
{
int top = lua_gettop (L);
if (top < 6) {
return luaL_argerror (L, 1, "invalid number of arguments sample_to_timecode (TimecodeFormat, sample_rate, hh, mm, ss, ff)");
}
typedef Timecode::TimecodeFormat T;
T tf = luabridge::Stack<T>::get (L, 1);
double sample_rate = luabridge::Stack<double>::get (L, 2);
int hh = luabridge::Stack<int>::get (L, 3);
int mm = luabridge::Stack<int>::get (L, 4);
int ss = luabridge::Stack<int>::get (L, 5);
int ff = luabridge::Stack<int>::get (L, 6);
Timecode::Time timecode;
timecode.negative = false;
timecode.hours = hh;
timecode.minutes = mm;
timecode.seconds = ss;
timecode.frames = ff;
timecode.subframes = 0;
timecode.rate = Timecode::timecode_to_frames_per_second (tf);
timecode.drop = Timecode::timecode_has_drop_frames (tf);
int64_t sample;
Timecode::timecode_to_sample (
timecode, sample, false, false,
sample_rate, 0, false, 0);
luabridge::Stack<int64_t>::push (L, sample);
return 1;
}
int
ARDOUR::LuaAPI::sample_to_timecode_lua (lua_State *L)
{
int top = lua_gettop (L);
if (top < 2) {
return luaL_argerror (L, 1, "invalid number of arguments sample_to_timecode (sample)");
}
Session const* const s = luabridge::Userdata::get <Session> (L, 1, true);
int64_t sample = luabridge::Stack<int64_t>::get (L, 2);
Timecode::Time timecode;
Timecode::sample_to_timecode (
sample, timecode, false, false,
s->timecode_frames_per_second (),
s->timecode_drop_frames (),
s->sample_rate (),
0, false, 0);
luabridge::Stack<uint32_t>::push (L, timecode.hours);
luabridge::Stack<uint32_t>::push (L, timecode.minutes);
luabridge::Stack<uint32_t>::push (L, timecode.seconds);
luabridge::Stack<uint32_t>::push (L, timecode.frames);
return 4;
}
int
ARDOUR::LuaAPI::timecode_to_sample_lua (lua_State *L)
{
int top = lua_gettop (L);
if (top < 5) {
return luaL_argerror (L, 1, "invalid number of arguments sample_to_timecode (hh, mm, ss, ff)");
}
Session const* const s = luabridge::Userdata::get <Session> (L, 1, true);
int hh = luabridge::Stack<int>::get (L, 2);
int mm = luabridge::Stack<int>::get (L, 3);
int ss = luabridge::Stack<int>::get (L, 4);
int ff = luabridge::Stack<int>::get (L, 5);
Timecode::Time timecode;
timecode.negative = false;
timecode.hours = hh;
timecode.minutes = mm;
timecode.seconds = ss;
timecode.frames = ff;
timecode.subframes = 0;
timecode.rate = s->timecode_frames_per_second ();
timecode.drop = s->timecode_drop_frames ();
int64_t sample;
Timecode::timecode_to_sample (
timecode, sample, false, false,
s->sample_rate (),
0, false, 0);
luabridge::Stack<int64_t>::push (L, sample);
return 1;
}
int
ARDOUR::LuaOSC::Address::send (lua_State *L)
{
Address * const luaosc = luabridge::Userdata::get <Address> (L, 1, false);
if (!luaosc) {
return luaL_error (L, "Invalid pointer to OSC.Address");
}
if (!luaosc->_addr) {
return luaL_error (L, "Invalid Destination Address");
}
int top = lua_gettop (L);
if (top < 3) {
return luaL_argerror (L, 1, "invalid number of arguments, :send (path, type, ...)");
}
const char* path = luaL_checkstring (L, 2);
const char* type = luaL_checkstring (L, 3);
assert (path && type);
if ((int) strlen (type) != top - 3) {
return luaL_argerror (L, 3, "type description does not match arguments");
}
lo_message msg = lo_message_new ();
for (int i = 4; i <= top; ++i) {
char t = type[i - 4];
int lt = lua_type (L, i);
int ok = -1;
switch (lt) {
case LUA_TSTRING:
if (t == LO_STRING) {
ok = lo_message_add_string (msg, luaL_checkstring (L, i));
} else if (t == LO_CHAR) {
char c = luaL_checkstring (L, i) [0];
ok = lo_message_add_char (msg, c);
}
break;
case LUA_TBOOLEAN:
if (t == LO_TRUE || t == LO_FALSE) {
if (lua_toboolean (L, i)) {
ok = lo_message_add_true (msg);
} else {
ok = lo_message_add_false (msg);
}
}
break;
case LUA_TNUMBER:
if (t == LO_INT32) {
ok = lo_message_add_int32 (msg, (int32_t) luaL_checkinteger (L, i));
}
else if (t == LO_FLOAT) {
ok = lo_message_add_float (msg, (float) luaL_checknumber (L, i));
}
else if (t == LO_DOUBLE) {
ok = lo_message_add_double (msg, (double) luaL_checknumber (L, i));
}
else if (t == LO_INT64) {
ok = lo_message_add_double (msg, (int64_t) luaL_checknumber (L, i));
}
break;
default:
break;
}
if (ok != 0) {
return luaL_argerror (L, i, "type description does not match parameter");
}
}
int rv = lo_send_message (luaosc->_addr, path, msg);
lo_message_free (msg);
luabridge::Stack<bool>::push (L, (rv == 0));
return 1;
}
static double hue2rgb (const double p, const double q, double t) {
if (t < 0.0) t += 1.0;
if (t > 1.0) t -= 1.0;
if (t < 1.0 / 6.0) return p + (q - p) * 6.0 * t;
if (t < 1.0 / 2.0) return q;
if (t < 2.0 / 3.0) return p + (q - p) * (2.0 / 3.0 - t) * 6.0;
return p;
}
int
ARDOUR::LuaAPI::hsla_to_rgba (lua_State *L)
{
int top = lua_gettop (L);
if (top < 3) {
return luaL_argerror (L, 1, "invalid number of arguments, :hsla_to_rgba (h, s, l [,a])");
}
double h = luabridge::Stack<double>::get (L, 1);
double s = luabridge::Stack<double>::get (L, 2);
double l = luabridge::Stack<double>::get (L, 3);
double a = 1.0;
if (top > 3) {
a = luabridge::Stack<double>::get (L, 4);
}
// we can't use Gtkmm2ext::hsva_to_color here
// besides we want HSL not HSV and without intermediate
// color_to_rgba (rgba_to_color ())
double r, g, b;
const double cq = l < 0.5 ? l * (1 + s) : l + s - l * s;
const double cp = 2.f * l - cq;
r = hue2rgb (cp, cq, h + 1.0 / 3.0);
g = hue2rgb (cp, cq, h);
b = hue2rgb (cp, cq, h - 1.0 / 3.0);
luabridge::Stack<double>::push (L, r);
luabridge::Stack<double>::push (L, g);
luabridge::Stack<double>::push (L, b);
luabridge::Stack<double>::push (L, a);
return 4;
}
int
ARDOUR::LuaAPI::color_to_rgba (lua_State *L)
{
int top = lua_gettop (L);
if (top < 1) {
return luaL_argerror (L, 1, "invalid number of arguments, color_to_rgba (uint32_t)");
}
uint32_t color = luabridge::Stack<uint32_t>::get (L, 1);
double r, g, b, a;
/* libardour is no user of libcanvas, otherwise
* we could just call
* Gtkmm2ext::color_to_rgba (color, r, g, b, a);
*/
r = ((color >> 24) & 0xff) / 255.0;
g = ((color >> 16) & 0xff) / 255.0;
b = ((color >> 8) & 0xff) / 255.0;
a = ((color >> 0) & 0xff) / 255.0;
luabridge::Stack <double>::push (L, r);
luabridge::Stack <double>::push (L, g);
luabridge::Stack <double>::push (L, b);
luabridge::Stack <double>::push (L, a);
return 4;
}
int
ARDOUR::LuaAPI::build_filename (lua_State *L)
{
std::vector<std::string> elem;
int top = lua_gettop (L);
if (top < 1) {
return luaL_argerror (L, 1, "invalid number of arguments, build_filename (path, ...)");
}
for (int i = 1; i <= top; ++i) {
int lt = lua_type (L, i);
if (lt != LUA_TSTRING) {
return luaL_argerror (L, i, "invalid argument type, expected string");
}
elem.push_back (luaL_checkstring (L, i));
}
luabridge::Stack<std::string>::push (L, Glib::build_filename (elem));
return 1;
}
luabridge::LuaRef::Proxy&
luabridge::LuaRef::Proxy::clone_instance (const void* classkey, void* p) {
lua_rawgeti (m_L, LUA_REGISTRYINDEX, m_tableRef);
lua_rawgeti (m_L, LUA_REGISTRYINDEX, m_keyRef);
luabridge::UserdataPtr::push_raw (m_L, p, classkey);
lua_rawset (m_L, -3);
lua_pop (m_L, 1);
return *this;
}
LuaTableRef::LuaTableRef () {}
LuaTableRef::~LuaTableRef () {}
int
LuaTableRef::get (lua_State* L)
{
luabridge::LuaRef rv (luabridge::newTable (L));
for (std::vector<LuaTableEntry>::const_iterator i = _data.begin (); i != _data.end (); ++i) {
switch ((*i).keytype) {
case LUA_TSTRING:
assign (&rv, i->k_s, *i);
break;
case LUA_TNUMBER:
assign (&rv, i->k_n, *i);
break;
}
}
luabridge::push (L, rv);
return 1;
}
int
LuaTableRef::set (lua_State* L)
{
if (!lua_istable (L, -1)) { return luaL_error (L, "argument is not a table"); }
_data.clear ();
lua_pushvalue (L, -1);
lua_pushnil (L);
while (lua_next (L, -2)) {
lua_pushvalue (L, -2);
LuaTableEntry s (lua_type (L, -1), lua_type (L, -2));
switch (lua_type (L, -1)) {
case LUA_TSTRING:
s.k_s = luabridge::Stack<std::string>::get (L, -1);
break;
;
case LUA_TNUMBER:
s.k_n = luabridge::Stack<unsigned int>::get (L, -1);
break;
default:
// invalid key
lua_pop (L, 2);
continue;
}
switch (lua_type (L, -2)) {
case LUA_TSTRING:
s.s = luabridge::Stack<std::string>::get (L, -2);
break;
case LUA_TBOOLEAN:
s.b = lua_toboolean (L, -2);
break;
case LUA_TNUMBER:
s.n = lua_tonumber (L, -2);
break;
case LUA_TUSERDATA:
{
bool ok = false;
lua_getmetatable (L, -2);
lua_rawgetp (L, -1, luabridge::getIdentityKey ());
if (lua_isboolean (L, -1)) {
lua_pop (L, 1);
const void* key = lua_topointer (L, -1);
lua_pop (L, 1);
void const* classkey = findclasskey (L, key);
if (classkey) {
ok = true;
s.c = classkey;
s.p = luabridge::Userdata::get_ptr (L, -2);
}
} else {
lua_pop (L, 2);
}
if (ok) {
break;
}
// invalid userdata -- fall through
}
// no break
case LUA_TFUNCTION: // no support -- we could... string.format("%q", string.dump(value, true))
case LUA_TTABLE: // no nested tables, sorry.
case LUA_TNIL: // fallthrough
default:
// invalid value
lua_pop (L, 2);
continue;
}
_data.push_back (s);
lua_pop (L, 2);
}
return 0;
}
void*
LuaTableRef::findclasskey (lua_State *L, const void* key)
{
lua_pushvalue (L, LUA_REGISTRYINDEX);
lua_pushnil (L);
while (lua_next (L, -2)) {
lua_pushvalue (L, -2);
if (lua_topointer (L, -2) == key) {
void* rv = lua_touserdata (L, -1);
lua_pop (L, 4);
return rv;
}
lua_pop (L, 2);
}
lua_pop (L, 1);
return NULL;
}
template<typename T>
void LuaTableRef::assign (luabridge::LuaRef* rv, T key, const LuaTableEntry& s)
{
switch (s.valuetype) {
case LUA_TSTRING:
(*rv)[key] = s.s;
break;
case LUA_TBOOLEAN:
(*rv)[key] = s.b;
break;
case LUA_TNUMBER:
(*rv)[key] = s.n;
break;
case LUA_TUSERDATA:
(*rv)[key].clone_instance (s.c, s.p);
break;
default:
assert (0);
break;
}
}
std::vector<std::string>
LuaAPI::Vamp::list_plugins ()
{
using namespace ::Vamp::HostExt;
PluginLoader* loader (PluginLoader::getInstance());
return loader->listPlugins ();
}
LuaAPI::Vamp::Vamp (const std::string& key, float sample_rate)
: _plugin (0)
, _sample_rate (sample_rate)
, _bufsize (1024)
, _stepsize (1024)
, _initialized (false)
{
using namespace ::Vamp::HostExt;
PluginLoader* loader (PluginLoader::getInstance());
_plugin = loader->loadPlugin (key, _sample_rate, PluginLoader::ADAPT_ALL_SAFE);
if (!_plugin) {
PBD::error << string_compose (_("VAMP Plugin \"%1\" could not be loaded"), key) << endmsg;
throw failed_constructor ();
}
size_t bs = _plugin->getPreferredBlockSize ();
size_t ss = _plugin->getPreferredStepSize ();
if (bs > 0 && ss > 0 && bs <= 8192 && ss <= 8192) {
_bufsize = bs;
_stepsize = ss;
}
}
LuaAPI::Vamp::~Vamp ()
{
delete _plugin;
}
void
LuaAPI::Vamp::reset ()
{
_initialized = false;
if (_plugin) {
_plugin->reset ();
}
}
bool
LuaAPI::Vamp::initialize ()
{
if (!_plugin || _plugin->getMinChannelCount() > 1) {
return false;
}
if (!_plugin->initialise (1, _stepsize, _bufsize)) {
return false;
}
_initialized = true;
return true;
}
int
LuaAPI::Vamp::analyze (boost::shared_ptr<ARDOUR::Readable> r, uint32_t channel, luabridge::LuaRef cb)
{
if (!_initialized) {
if (!initialize ()) {
return -1;
}
}
assert (_initialized);
::Vamp::Plugin::FeatureSet features;
float* data = new float[_bufsize];
float* bufs[1] = { data };
samplecnt_t len = r->readable_length();
samplepos_t pos = 0;
int rv = 0;
while (1) {
samplecnt_t to_read = std::min ((len - pos), _bufsize);
if (r->read (data, pos, to_read, channel) != to_read) {
rv = -1;
break;
}
if (to_read != _bufsize) {
memset (data + to_read, 0, (_bufsize - to_read) * sizeof (float));
}
features = _plugin->process (bufs, ::Vamp::RealTime::fromSeconds ((double) pos / _sample_rate));
if (cb.type () == LUA_TFUNCTION) {
cb (&features, pos);
}
pos += std::min (_stepsize, to_read);
if (pos >= len) {
break;
}
}
delete [] data;
return rv;
}
::Vamp::Plugin::FeatureSet
LuaAPI::Vamp::process (const std::vector<float*>& d, ::Vamp::RealTime rt)
{
if (!_plugin || d.size() == 0) {
return ::Vamp::Plugin::FeatureSet ();
}
const float* const* bufs = &d[0];
return _plugin->process (bufs, rt);
}
boost::shared_ptr<Evoral::Note<Temporal::Beats> >
LuaAPI::new_noteptr (uint8_t chan, Temporal::Beats beat_time, Temporal::Beats length, uint8_t note, uint8_t velocity)
{
return boost::shared_ptr<Evoral::Note<Temporal::Beats> > (new Evoral::Note<Temporal::Beats>(chan, beat_time, length, note, velocity));
}
std::list<boost::shared_ptr<Evoral::Note<Temporal::Beats> > >
LuaAPI::note_list (boost::shared_ptr<MidiModel> mm)
{
typedef boost::shared_ptr<Evoral::Note<Temporal::Beats> > NotePtr;
std::list<NotePtr> note_ptr_list;
const MidiModel::Notes& notes = mm->notes();
for (MidiModel::Notes::const_iterator i = notes.begin(); i != notes.end(); ++i) {
note_ptr_list.push_back (*i);
}
return note_ptr_list;
}