On Thu, Jul 11, 2019 at 10:26 AM Reinhold Hoffmann
<reinh...@notation.com> wrote:
>
> Hi,
>
>
>
> I want to display to the user the instrument names of the samples of a loaded
> soundfont file (sf2, sf3 format).
>
>
>
> Is there a public interface available in the libfluidsynth library where the
> instrument names of the soundfont samples can be obtained after a soundfont
> file is loaded with fluid_synth_sfload to a fluidsynth synthesizer? It looks
> as if those sample names are handled internally but I am not sure if those
> instrument sample names can be read using the public interface.
>
>
>
> Any idea, help, advice or code example is highly appreciated.
>
libgig has a pretty clear interface to parse sf2 files
This is from sf2dump.cpp in libgig:
void PrintPeresets(sf2::File* sf) {
cout << "Presets (" << sf->GetPresetCount() << "): " << endl;
for (int i = 0; i < sf->GetPresetCount(); i++) { /* exclude the
terminal header - EOP */
sf2::Preset* p = sf->GetPreset(i);
cout << "\t" << p->Name << " (Preset: " << p->PresetNum << ",
Bank: " << p->Bank;
if (p->pGlobalRegion) PrintRegion(-1, p->pGlobalRegion);
for (int j = 0; j < p->GetRegionCount(); j++) {
PrintRegion(j, p->GetRegion(j));
}
cout << endl;
cout << endl;
}
}
void PrintInstruments(sf2::File* sf) {
cout << "Instruments (" << sf->GetInstrumentCount() << "): " << endl;
for (int i = 0; i < sf->GetInstrumentCount(); i++) {
sf2::Instrument* instr = sf->GetInstrument(i);
cout << "Instrument bag: " << instr->InstBagNdx << ")" << endl;
cout << "\t Regions (" << instr->GetRegionCount() << ")" << endl;
if (instr->pGlobalRegion) PrintRegion(-1, instr->pGlobalRegion);
for (int j = 0; j < instr->GetRegionCount(); j++) {
PrintRegion(j, instr->GetRegion(j));
}
cout << "\t" << instr->Name << " (";
cout << endl;
}
}
To find out which samples are used in instruments and presets, you
look at the regions:
void PrintRegion(int idx, sf2::Region* reg) {
if (idx == -1) cout << "\t\tGlobal Region " << endl;
else cout << "\t\tRegion " << idx << endl;
sf2::Sample* s = reg->GetSample();
if (s != NULL) {
cout << "\t\t Sample: " << s->Name << ", Fine Tune: " <<
reg->fineTune;
...
cout << endl;
}
...
}
void PrintSamples(sf2::File* sf) {
cout << "Samples (" << sf->GetSampleCount() << "): " << endl;
for (int i = 0; i < sf->GetSampleCount(); i++) {
sf2::Sample* s = sf->GetSample(i);
cout << "\t" << s->Name << " (Depth: " << ((s->GetFrameSize()
/ s->GetChannelCount()) * 8);
...
}
}
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