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comparison libtest/pcmwrite.c @ 11:a3aa152c4653

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libtest: pcmwrite helper function and module
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 20 Nov 2022 00:31:42 +0000
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10:820d88b97924 11:a3aa152c4653
1 /*
2 * Here we implement our PCM write helper function.
3 */
4
5 #include <stdint.h>
6 #include "wavwriter.h"
7 #include "pcmwrite.h"
8
9 void write_pcm_to_wav(void *wav, const int16_t *pcm)
10 {
11 uint8_t bytes[320], *dp;
12 int16_t samp;
13 unsigned n;
14
15 dp = bytes;
16 for (n = 0; n < 160; n++) {
17 samp = pcm[n];
18 *dp++ = samp & 0xFF;
19 *dp++ = (samp >> 8) & 0xFF;
20 }
21 wav_write_data(wav, bytes, 320);
22 }