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#include <vamp-sdk/hostext/PluginLoader.h>
#include <glibmm/miscutils.h>
#include <glibmm/fileutils.h>
#include <glib/gstdio.h> // for g_remove()
#include <pbd/error.h>
#include <ardour/audioanalyser.h>
#include <ardour/readable.h>
#include <ardour/readable.h>
#include "i18n.h"
using namespace std;
using namespace Vamp;
using namespace PBD;
using namespace ARDOUR;
AudioAnalyser::AudioAnalyser (float sr, AnalysisPluginKey key)
: sample_rate (sr)
, plugin (0)
, plugin_key (key)
{
}
AudioAnalyser::~AudioAnalyser ()
{
}
int
AudioAnalyser::initialize_plugin (AnalysisPluginKey key, float sr)
{
using namespace Vamp::HostExt;
PluginLoader* loader (PluginLoader::getInstance());
plugin = loader->loadPlugin (key, sr, PluginLoader::ADAPT_ALL);
if (!plugin) {
error << string_compose (_("VAMP Plugin \"%1\" could not be loaded"), key) << endmsg;
return -1;
}
/* we asked for the buffering adapter, so set the blocksize to
something that makes for efficient disk i/o
*/
bufsize = 65536;
stepsize = bufsize;
if (plugin->getMinChannelCount() > 1) {
delete plugin;
return -1;
}
if (!plugin->initialise (1, stepsize, bufsize)) {
delete plugin;
return -1;
}
return 0;
}
void
AudioAnalyser::reset ()
{
if (plugin) {
plugin->reset ();
}
}
int
AudioAnalyser::analyse (const string& path, Readable* src, uint32_t channel)
{
ofstream ofile;
Plugin::FeatureSet onsets;
int ret = -1;
bool done = false;
Sample* data = 0;
nframes64_t len = src->readable_length();
nframes64_t pos = 0;
float* bufs[1] = { 0 };
if (!path.empty()) {
ofile.open (path.c_str());
if (!ofile) {
goto out;
}
}
/* create VAMP percussion onset plugin and initialize */
if (plugin == 0) {
if (initialize_plugin (plugin_key, sample_rate)) {
goto out;
}
}
data = new Sample[bufsize];
bufs[0] = data;
while (!done) {
nframes64_t to_read;
/* read from source */
to_read = min ((len - pos), bufsize);
if (src->read (data, pos, to_read, channel) != to_read) {
cerr << "bad read\n";
goto out;
}
/* zero fill buffer if necessary */
if (to_read != bufsize) {
memset (data + to_read, 0, (bufsize - to_read));
}
onsets = plugin->process (bufs, RealTime::fromSeconds ((double) pos / sample_rate));
if (use_features (onsets, (path.empty() ? &ofile : 0))) {
goto out;
}
pos += stepsize;
if (pos >= len) {
done = true;
}
}
/* finish up VAMP plugin */
onsets = plugin->getRemainingFeatures ();
if (use_features (onsets, (path.empty() ? &ofile : 0))) {
goto out;
}
ret = 0;
out:
/* works even if it has not been opened */
ofile.close ();
if (ret) {
g_remove (path.c_str());
}
if (data) {
delete data;
}
return ret;
}
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