[ALSA] OSS PCM emulation - The 2nd final fix for SNDCTL_DSP_GETOPTR problem
ALSA<-OSS emulation
The problem was negative/wrong result (info.bytes) in a specific condition at
playback startup.
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 203470d..cab3097 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -1537,13 +1537,13 @@
snd_pcm_oss_simulate_fill(substream, delay);
info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX;
} else {
- delay = snd_pcm_oss_bytes(substream, delay) + fixup;
- info.blocks = delay / runtime->oss.period_bytes;
+ delay = snd_pcm_oss_bytes(substream, delay);
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
- if (runtime->oss.bytes == 0)
- delay = 0;
+ info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes;
info.bytes = (runtime->oss.bytes - delay) & INT_MAX;
} else {
+ delay += fixup;
+ info.blocks = delay / runtime->oss.period_bytes;
info.bytes = (runtime->oss.bytes + delay) & INT_MAX;
}
}