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Change baseband audio processing pipeline to all floats.

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This commit is contained in:
Jared Boone
2016-01-11 16:15:42 -08:00
parent b9f124850b
commit 55e3a70fde
12 changed files with 90 additions and 56 deletions
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25
firmware/baseband/audio_output.cpp
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@@ -29,11 +29,12 @@
#include <cstdint>
#include <cstddef>
#include <array>
void AudioOutput::configure(
const iir_biquad_config_t& hpf_config,
const iir_biquad_config_t& deemph_config,
const uint32_t squelch_threshold
const float squelch_threshold
) {
hpf.configure(hpf_config);
deemph.configure(deemph_config);
@@ -42,6 +43,20 @@ void AudioOutput::configure(
void AudioOutput::write(
const buffer_s16_t& audio
) {
std::array<float, 32> audio_f;
for(size_t i=0; i<audio.count; i++) {
audio_f[i] = audio.p[i];
}
write(buffer_f32_t {
audio_f.data(),
audio.count,
audio.sampling_rate
});
}
void AudioOutput::write(
const buffer_f32_t& audio
) {
const auto audio_present_now = squelch.execute(audio);
@@ -63,16 +78,18 @@ void AudioOutput::write(
fill_audio_buffer(audio);
}
void AudioOutput::fill_audio_buffer(const buffer_s16_t& audio) {
void AudioOutput::fill_audio_buffer(const buffer_f32_t& audio) {
auto audio_buffer = audio::dma::tx_empty_buffer();
for(size_t i=0; i<audio_buffer.count; i++) {
audio_buffer.p[i].left = audio_buffer.p[i].right = audio.p[i];
const int32_t sample_int = audio.p[i];
const int32_t sample_saturated = __SSAT(sample_int, 16);
audio_buffer.p[i].left = audio_buffer.p[i].right = sample_saturated;
}
feed_audio_stats(audio);
}
void AudioOutput::feed_audio_stats(const buffer_s16_t& audio) {
void AudioOutput::feed_audio_stats(const buffer_f32_t& audio) {
audio_stats.feed(
audio,
[](const AudioStatistics& statistics) {