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16-bit sound for winmm

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This commit is contained in:
Serge Zaitsev
2023-01-18 15:00:08 +01:00
parent 6defe57cd2
commit eb5e5674d5
1 changed files with 4 additions and 5 deletions
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9
fenster_audio.h
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@ -25,7 +25,7 @@ struct fenster_audio {
WAVEHDR header;
HWAVEOUT wo;
WAVEHDR hdr[2];
char buf[2][FENSTER_AUDIO_BUFSZ];
int16_t buf[2][FENSTER_AUDIO_BUFSZ];
};
#elif defined(__linux__)
struct fenster_audio {
@ -93,14 +93,13 @@ FENSTER_API void fenster_audio_write(struct fenster_audio *fa, float *buf,
}
}
#elif defined(_WIN32)
/* TODO */
FENSTER_API int fenster_audio_open(struct fenster_audio *fa) {
WAVEFORMATEX wfx = {
WAVE_FORMAT_PCM, 1, FENSTER_SAMPLE_RATE, FENSTER_SAMPLE_RATE, 1, 8, 0};
WAVE_FORMAT_PCM, 1, FENSTER_SAMPLE_RATE, FENSTER_SAMPLE_RATE*2, 1, 16, 0};
waveOutOpen(&fa->wo, WAVE_MAPPER, &wfx, 0, 0, CALLBACK_NULL);
for (int i = 0; i < 2; i++) {
fa->hdr[i].lpData = fa->buf[i];
fa->hdr[i].dwBufferLength = FENSTER_AUDIO_BUFSZ;
fa->hdr[i].dwBufferLength = FENSTER_AUDIO_BUFSZ*2;
waveOutPrepareHeader(fa->wo, &fa->hdr[i], sizeof(WAVEHDR));
waveOutWrite(fa->wo, &fa->hdr[i], sizeof(WAVEHDR));
}
@ -117,7 +116,7 @@ FENSTER_API void fenster_audio_write(struct fenster_audio *fa, float *buf,
for (int i = 0; i < 2; i++) {
if (fa->hdr[i].dwFlags & WHDR_DONE) {
for (unsigned j = 0; j < n; j++) {
fa->buf[i][j] = (uint8_t)(buf[j] * 256);
fa->buf[i][j] = (int16_t) (buf[j]*32767);
}
waveOutWrite(fa->wo, &fa->hdr[i], sizeof(WAVEHDR));
return;