FreeCalypso > hg > gsm-codec-lib
diff libtest/pcmwrite.c @ 11:a3aa152c4653
libtest: pcmwrite helper function and module
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 20 Nov 2022 00:31:42 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtest/pcmwrite.c Sun Nov 20 00:31:42 2022 +0000 @@ -0,0 +1,22 @@ +/* + * Here we implement our PCM write helper function. + */ + +#include <stdint.h> +#include "wavwriter.h" +#include "pcmwrite.h" + +void write_pcm_to_wav(void *wav, const int16_t *pcm) +{ + uint8_t bytes[320], *dp; + int16_t samp; + unsigned n; + + dp = bytes; + for (n = 0; n < 160; n++) { + samp = pcm[n]; + *dp++ = samp & 0xFF; + *dp++ = (samp >> 8) & 0xFF; + } + wav_write_data(wav, bytes, 320); +}