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winealsa: Calculate the delay correctly as snd_pcm_delay is not reliable in this context.

This commit is contained in:
Reece Dunn 2008-11-21 21:14:32 +00:00 committed by Alexandre Julliard
parent 849c36ba8e
commit ef0069cbf5
1 changed files with 14 additions and 4 deletions
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18
dlls/winealsa.drv/waveout.c
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@ -98,19 +98,29 @@ static DWORD wodNotifyClient(WINE_WAVEDEV* wwo, WORD wMsg, DWORD dwParam1, DWORD
static BOOL wodUpdatePlayedTotal(WINE_WAVEDEV* wwo, snd_pcm_status_t* ps)
{
snd_pcm_sframes_t delay = 0;
snd_pcm_sframes_t avail = 0;
snd_pcm_uframes_t buf_size = 0;
snd_pcm_state_t state;
int err;
state = snd_pcm_state(wwo->pcm);
snd_pcm_delay(wwo->pcm, &delay);
avail = snd_pcm_avail_update(wwo->pcm);
err = snd_pcm_hw_params_get_buffer_size(wwo->hw_params, &buf_size);
delay = buf_size - avail;
if (state != SND_PCM_STATE_RUNNING && state != SND_PCM_STATE_PREPARED)
{
WARN("Unexpected state (%d) while updating Total Played, resetting\n", state);
delay=0;
}
/* A delay < 0 indicates an underrun; for our purposes that's 0. */
if (delay < 0)
{
WARN("Unexpected state (%d) or delay (%ld) while updating Total Played, resetting\n", state, delay);
WARN("Unexpected delay (%ld) while updating Total Played, resetting\n", delay);
delay=0;
}
if (state == SND_PCM_STATE_XRUN)
snd_pcm_start(wwo->pcm);
InterlockedExchange((LONG*)&wwo->dwPlayedTotal, wwo->dwWrittenTotal - snd_pcm_frames_to_bytes(wwo->pcm, delay));
return TRUE;
}