35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
#include "opus_resampler.h"
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#include "silk_resampler.h"
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#include "esp_log.h"
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#define TAG "OpusResampler"
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OpusResampler::OpusResampler() {
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}
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OpusResampler::~OpusResampler() {
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}
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void OpusResampler::Configure(int input_sample_rate, int output_sample_rate) {
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int encode = input_sample_rate > output_sample_rate ? 1 : 0;
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auto ret = silk_resampler_init(&resampler_state_, input_sample_rate, output_sample_rate, encode);
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if (ret != 0) {
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ESP_LOGE(TAG, "Failed to initialize resampler");
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return;
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}
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input_sample_rate_ = input_sample_rate;
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output_sample_rate_ = output_sample_rate;
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ESP_LOGI(TAG, "Resampler configured with input sample rate %d and output sample rate %d", input_sample_rate_, output_sample_rate_);
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}
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void OpusResampler::Process(const int16_t *input, int input_samples, int16_t *output) {
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auto ret = silk_resampler(&resampler_state_, output, input, input_samples);
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if (ret != 0) {
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ESP_LOGE(TAG, "Failed to process resampler");
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}
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}
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int OpusResampler::GetOutputSamples(int input_samples) const {
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return input_samples * output_sample_rate_ / input_sample_rate_;
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}
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