3 #include "vamp-hostsdk/PluginLoader.h"
5 #include <glibmm/miscutils.h>
6 #include <glibmm/fileutils.h>
7 #include <glib/gstdio.h> // for g_remove()
11 #include "ardour/audioanalyser.h"
12 #include "ardour/readable.h"
13 #include "ardour/readable.h"
22 using namespace ARDOUR;
24 AudioAnalyser::AudioAnalyser (float sr, AnalysisPluginKey key)
28 /* create VAMP plugin and initialize */
30 if (initialize_plugin (plugin_key, sample_rate)) {
31 error << string_compose (_("cannot load VAMP plugin \"%1\""), key) << endmsg;
32 throw failed_constructor();
36 AudioAnalyser::~AudioAnalyser ()
42 AudioAnalyser::initialize_plugin (AnalysisPluginKey key, float sr)
44 using namespace Vamp::HostExt;
46 PluginLoader* loader (PluginLoader::getInstance());
48 plugin = loader->loadPlugin (key, sr, PluginLoader::ADAPT_ALL);
51 error << string_compose (_("VAMP Plugin \"%1\" could not be loaded"), key) << endmsg;
55 /* we asked for the buffering adapter, so set the blocksize to
56 something that makes for efficient disk i/o
62 if (plugin->getMinChannelCount() > 1) {
67 if (!plugin->initialise (1, stepsize, bufsize)) {
76 AudioAnalyser::reset ()
84 AudioAnalyser::analyse (const string& path, Readable* src, uint32_t channel)
87 Plugin::FeatureSet features;
91 nframes64_t len = src->readable_length();
93 float* bufs[1] = { 0 };
98 /* store data in tmp file, not the real one */
103 ofile.open (tmp_path.c_str());
109 data = new Sample[bufsize];
116 /* read from source */
118 to_read = min ((len - pos), bufsize);
120 if (src->read (data, pos, to_read, channel) != to_read) {
124 /* zero fill buffer if necessary */
126 if (to_read != bufsize) {
127 memset (data + to_read, 0, (bufsize - to_read) * sizeof (Sample));
130 features = plugin->process (bufs, RealTime::fromSeconds ((double) pos / sample_rate));
132 if (use_features (features, (path.empty() ? 0 : &ofile))) {
136 pos += min (stepsize, to_read);
143 /* finish up VAMP plugin */
145 features = plugin->getRemainingFeatures ();
147 if (use_features (features, (path.empty() ? &ofile : 0))) {
154 /* works even if it has not been opened */
158 g_remove (tmp_path.c_str());
159 } else if (!path.empty()) {
160 /* move the data file to the requested path */
161 g_rename (tmp_path.c_str(), path.c_str());