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This commit is contained in:
Serge Zaitsev
2023-01-18 13:17:12 +01:00
parent 01b96eac45
commit 6ba8e02f44
2 changed files with 28 additions and 22 deletions
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33
examples/sound-c/main.c
View File

@ -20,25 +20,26 @@ static int run() {
.height = H,
.buf = buf,
};
struct fenster_audio fa = {0};
struct fenster_audio fa = {0};
fenster_open(&f);
fenster_audio_open(&fa);
fenster_audio_open(&fa);
uint32_t t, u = 0;
float audio[FENSTER_AUDIO_BUFSZ];
float audio[FENSTER_AUDIO_BUFSZ];
int64_t now = fenster_time();
while (fenster_loop(&f) == 0) {
t++;
int n = fenster_audio_available(&fa);
if (n > 0) {
for (int i = 0; i < n; i++) {
u++;
/*audio[i] = (rand() & 0xff)/256.f;*/
int x = u * 80/441;
audio[i] = ((((x >> 10) & 42) * x)&0xff)/256.f;
}
fenster_audio_write(&fa, audio, n);
}
if (f.keys[27]) break;
int n = fenster_audio_available(&fa);
if (n > 0) {
for (int i = 0; i < n; i++) {
u++;
/*audio[i] = (rand() & 0xff)/256.f;*/
int x = u * 80 / 441;
audio[i] = ((((x >> 10) & 42) * x) & 0xff) / 256.f;
}
fenster_audio_write(&fa, audio, n);
}
if (f.keys[27])
break;
for (int i = 0; i < 320; i++) {
for (int j = 0; j < 240; j++) {
@ -54,11 +55,11 @@ static int run() {
}
int64_t time = fenster_time();
if (time - now < 1000 / 60) {
fenster_sleep(time - now);
fenster_sleep(time - now);
}
now = time;
}
fenster_audio_close(&fa);
fenster_audio_close(&fa);
fenster_close(&f);
return 0;
}

17
fenster_audio.h
View File

@ -100,21 +100,26 @@ int snd_pcm_writei(void *, const void *, unsigned long);
int snd_pcm_recover(void *, int, int);
int snd_pcm_close(void *);
FENSTER_API int fenster_audio_open(struct fenster_audio *fa) {
if (snd_pcm_open(&fa->pcm, "default", 0, 0)) return -1;
int fmt = (*(unsigned char *)(&(uint16_t){1}))?14:15;
if (snd_pcm_open(&fa->pcm, "default", 0, 0))
return -1;
int fmt = (*(unsigned char *)(&(uint16_t){1})) ? 14 : 15;
return snd_pcm_set_params(fa->pcm, fmt, 3, 1, FENSTER_SAMPLE_RATE, 1, 100000);
}
FENSTER_API int fenster_audio_available(struct fenster_audio *fa) {
int n = snd_pcm_avail(fa->pcm);
if (n < 0) snd_pcm_recover(fa->pcm, n, 0);
int n = snd_pcm_avail(fa->pcm);
if (n < 0)
snd_pcm_recover(fa->pcm, n, 0);
return n;
}
FENSTER_API void fenster_audio_write(struct fenster_audio *fa, float *buf,
size_t n) {
int r = snd_pcm_writei(fa->pcm, buf, n);
if (r < 0) snd_pcm_recover(fa->pcm, r, 0);
if (r < 0)
snd_pcm_recover(fa->pcm, r, 0);
}
FENSTER_API void fenster_audio_close(struct fenster_audio *fa) {
snd_pcm_close(fa->pcm);
}
FENSTER_API void fenster_audio_close(struct fenster_audio *fa) { snd_pcm_close(fa->pcm); }
#endif
#endif /* FENSTER_HEADER */