ALSA: snd-usb-caiaq: fix reported elapsed periods

Reset the internal period position counter upon stream startup. This
fixes initial aplay underruns and problems related to latency picky
applications such as pulseaudio.

Bumped the version number to 1.3.14.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Daniel Mack
2009-04-27 12:18:05 +02:00
zatwierdzone przez Takashi Iwai
rodzic 936e7d0339
commit a9b487fa1e
2 zmienionych plików z 8 dodań i 6 usunięć

Wyświetl plik

@@ -195,11 +195,14 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
debug("%s(%p)\n", __func__, substream);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
dev->period_out_count[index] = BYTES_PER_SAMPLE + 1;
dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1;
else
} else {
dev->period_in_count[index] = BYTES_PER_SAMPLE;
dev->audio_in_buf_pos[index] = BYTES_PER_SAMPLE;
}
if (dev->streaming)
return 0;
@@ -300,8 +303,7 @@ static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev,
if (!sub)
continue;
pb = frames_to_bytes(sub->runtime,
sub->runtime->period_size);
pb = snd_pcm_lib_period_bytes(sub);
cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
&dev->period_out_count[stream] :
&dev->period_in_count[stream];