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Soundboard: Arbitrary samplerate support for wave files

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furrtek
2016-08-26 09:54:17 +02:00
parent f7e0f36bd9
commit 808f99647e
21 changed files with 36 additions and 28 deletions
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7
firmware/baseband/proc_audiotx.cpp
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@@ -34,12 +34,12 @@ void AudioTXProcessor::execute(const buffer_c8_t& buffer){
if (!configured) return;
ai = 0;
//ai = 0;
for (size_t i = 0; i<buffer.count; i++) {
// Audio preview sample generation: 1536000/48000 = 32
// Audio preview sample generation: 1536000/divider = samplerate
if (!as) {
as = 32;
as = divider;
audio_fifo.out(sample);
//preview_audio_buffer.p[ai++] = sample << 8;
@@ -78,6 +78,7 @@ void AudioTXProcessor::on_message(const Message* const msg) {
// m = (262144 * a) / 1536000
// a = 262144 / 1536000 (*1000 = 171)
bw = 171 * (message->bw);
divider = message->divider;
as = 0;
configured = true;

4
firmware/baseband/proc_audiotx.hpp
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@@ -42,7 +42,9 @@ private:
FIFO<int8_t> audio_fifo = { audio_fifo_data, 11 }; // 43ms @ 48000Hz
uint32_t bw;
uint8_t as = 0, ai;
uint32_t divider;
uint8_t as = 0;
int8_t re, im;
int8_t sample;