43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
#include <iostream>
|
|
#include <cstring>
|
|
#include "AudioResampler.h"
|
|
#include "../logger.h"
|
|
|
|
using namespace std;
|
|
using namespace tc::audio;
|
|
|
|
AudioResampler::AudioResampler(size_t irate, size_t orate, size_t channels) : _input_rate(irate), _output_rate(orate), _channels(channels) {
|
|
if(this->input_rate() != this->output_rate()) {
|
|
soxr_error_t error;
|
|
this->soxr_handle = soxr_create((double) this->_input_rate, (double) this->_output_rate, (unsigned) this->_channels, &error, nullptr, nullptr, nullptr);
|
|
|
|
if(!this->soxr_handle) {
|
|
log_error(category::audio, tr("Failed to create soxr resampler: {}. Input: {}; Output: {}; Channels: {}"), error, this->_input_rate, this->_output_rate, this->_channels);
|
|
}
|
|
}
|
|
}
|
|
|
|
AudioResampler::~AudioResampler() {
|
|
if(this->soxr_handle)
|
|
soxr_delete(this->soxr_handle);
|
|
}
|
|
|
|
ssize_t AudioResampler::process(void *output, const void *input, size_t input_length) {
|
|
if(this->io_ratio() == 1) {
|
|
if(input != output)
|
|
memcpy(output, input, input_length * this->_channels * 4);
|
|
|
|
return input_length;
|
|
}
|
|
if(!this->soxr_handle)
|
|
return -2;
|
|
|
|
size_t output_length = 0;
|
|
auto error = soxr_process(this->soxr_handle, input, input_length, nullptr, output, this->estimated_output_size(input_length), &output_length);
|
|
if(error) {
|
|
log_error(category::audio, tr("Failed to process resample: {}"), error);
|
|
return -1;
|
|
}
|
|
|
|
return output_length;
|
|
} |