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Sound buffer size now configurable.

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This commit is contained in:
SarahW 2017-06-10 21:00:23 +01:00
commit 6e51e8975e
22 changed files with 92 additions and 26 deletions
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31
src/sound.c
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@ -120,7 +120,18 @@ static int16_t cd_buffer[CD_BUFLEN * 2];
static thread_t *sound_cd_thread_h;
static event_t *sound_cd_event;
static unsigned int cd_vol_l, cd_vol_r;
static int cd_buf_update = CD_BUFLEN / SOUNDBUFLEN;
int sound_buf_len = 48000 / 10;
void sound_update_buf_length()
{
int new_buf_len = (48000 / (1000 / sound_buf_len)) / 4;
if (new_buf_len > MAXSOUNDBUFLEN)
new_buf_len = MAXSOUNDBUFLEN;
SOUNDBUFLEN = new_buf_len;
}
void sound_set_cd_volume(unsigned int vol_l, unsigned int vol_r)
{
@ -194,7 +205,7 @@ void sound_init()
initalmain(0,NULL);
inital();
outbuffer = malloc(SOUNDBUFLEN * 2 * sizeof(int32_t));
outbuffer = malloc(MAXSOUNDBUFLEN * 2 * sizeof(int32_t));
sound_cd_event = thread_create_event();
sound_cd_thread_h = thread_create(sound_cd_thread, NULL);
@ -207,9 +218,17 @@ void sound_add_handler(void (*get_buffer)(int32_t *buffer, int len, void *p), vo
sound_handlers_num++;
}
static int cd_pos = 0;
void sound_poll(void *priv)
{
sound_poll_time += sound_poll_latch;
cd_pos++;
if (cd_pos == (CD_BUFLEN * 48000) / CD_FREQ)
{
cd_pos = 0;
thread_set_event(sound_cd_event);
}
sound_pos_global++;
if (sound_pos_global == SOUNDBUFLEN)
@ -238,14 +257,8 @@ void sound_poll(void *priv)
if (soundon) givealbuffer(outbuffer);
cd_buf_update--;
if (!cd_buf_update)
{
cd_buf_update = (48000 / SOUNDBUFLEN) / (CD_FREQ / CD_BUFLEN);
thread_set_event(sound_cd_event);
}
sound_pos_global = 0;
sound_update_buf_length();
}
}