Exemplos de AudioBuffer::convert_channels em C++ (Cpp)

Exemplo n.º 1

Arquivo: audiobuffer.cpp Projeto: joncampbell123/IBMulator

void AudioBuffer::convert(const AudioSpec &_new_spec)
{
	if(_new_spec == m_spec) {
		return;
	}

	AudioSpec new_spec = _new_spec;
	AudioBuffer dest[2];
	unsigned bufidx = 0;
	AudioBuffer *source = this;

	if(source->rate() != new_spec.rate) {
#if HAVE_LIBSAMPLERATE
		if(source->format() != AUDIO_FORMAT_F32) {
			dest[1].set_spec({AUDIO_FORMAT_F32, source->channels(), source->rate()});
			source->convert_format(dest[1], source->frames());
			source = &dest[1];
		}
		dest[0].set_spec({source->format(), source->channels(), new_spec.rate});
		source->convert_rate(dest[0], source->frames(), nullptr);
		source = &dest[0];
		bufidx = 1;
#else
		new_spec.rate = source->rate();
#endif
	}
	if(source->channels() != new_spec.channels) {
		dest[bufidx].set_spec({source->format(),new_spec.channels,source->rate()});
		source->convert_channels(dest[bufidx], source->frames());
		source = &dest[bufidx];
		bufidx = (bufidx + 1) % 2;
	}
	if(source->format() != new_spec.format) {
		dest[bufidx].set_spec({new_spec.format,source->channels(),source->rate()});
		source->convert_format(dest[bufidx], source->frames());
		source = &dest[bufidx];
	}

	if(new_spec != m_spec) {
		m_data = source->m_data;
		m_spec = new_spec;
	}
}