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Semi-naive audio recording to SD card.

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This commit is contained in:
Jared Boone
2016-02-09 17:49:17 -08:00
parent c01f2d82e1
commit 59f1a32566
10 changed files with 227 additions and 3 deletions
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10
firmware/baseband/audio_output.cpp
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@@ -83,15 +83,21 @@ void AudioOutput::on_block(
}
}
fill_audio_buffer(audio);
fill_audio_buffer(audio, audio_present);
}
void AudioOutput::fill_audio_buffer(const buffer_f32_t& audio) {
void AudioOutput::fill_audio_buffer(const buffer_f32_t& audio, const bool send_to_fifo) {
std::array<int16_t, 32> audio_int;
auto audio_buffer = audio::dma::tx_empty_buffer();
for(size_t i=0; i<audio_buffer.count; i++) {
const int32_t sample_int = audio.p[i] * k;
const int32_t sample_saturated = __SSAT(sample_int, 16);
audio_buffer.p[i].left = audio_buffer.p[i].right = sample_saturated;
audio_int[i] = sample_saturated;
}
if( send_to_fifo ) {
stream.write(audio_int.data(), audio_int.size() * sizeof(int16_t));
}
feed_audio_stats(audio);