diff options
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/caiaq/device.c | 8 | ||||
| -rw-r--r-- | sound/usb/card.c | 2 | ||||
| -rw-r--r-- | sound/usb/pcm.c | 25 |
3 files changed, 25 insertions, 10 deletions
diff --git a/sound/usb/caiaq/device.c b/sound/usb/caiaq/device.c index c828f8189c25..e4d6dbb0342d 100644 --- a/sound/usb/caiaq/device.c +++ b/sound/usb/caiaq/device.c @@ -48,10 +48,10 @@ MODULE_SUPPORTED_DEVICE("{{Native Instruments, RigKontrol2}," "{Native Instruments, Audio 8 DJ}," "{Native Instruments, Traktor Audio 2}," "{Native Instruments, Session I/O}," - "{Native Instruments, GuitarRig mobile}" - "{Native Instruments, Traktor Kontrol X1}" - "{Native Instruments, Traktor Kontrol S4}" - "{Native Instruments, Maschine Controller}"); + "{Native Instruments, GuitarRig mobile}," + "{Native Instruments, Traktor Kontrol X1}," + "{Native Instruments, Traktor Kontrol S4}," + "{Native Instruments, Maschine Controller}}"); static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */ static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */ diff --git a/sound/usb/card.c b/sound/usb/card.c index ccf95cfe186f..803953a9bff3 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -646,7 +646,7 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) as->substream[0].need_setup_ep = as->substream[1].need_setup_ep = true; } - } + } } else { /* * otherwise we keep the rest of the system in the dark diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index d82e378d37cb..81f70a719bb9 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -59,7 +59,12 @@ snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs, /* Approximation based on number of samples per USB frame (ms), some truncation for 44.1 but the estimate is good enough */ - est_delay = subs->last_delay - (frame_diff * rate / 1000); + est_delay = frame_diff * rate / 1000; + if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) + est_delay = subs->last_delay - est_delay; + else + est_delay = subs->last_delay + est_delay; + if (est_delay < 0) est_delay = 0; return est_delay; @@ -78,8 +83,7 @@ static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream return SNDRV_PCM_POS_XRUN; spin_lock(&subs->lock); hwptr_done = subs->hwptr_done; - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - substream->runtime->delay = snd_usb_pcm_delay(subs, + substream->runtime->delay = snd_usb_pcm_delay(subs, substream->runtime->rate); spin_unlock(&subs->lock); return hwptr_done / (substream->runtime->frame_bits >> 3); @@ -1157,6 +1161,10 @@ static void retire_capture_urb(struct snd_usb_substream *subs, int i, period_elapsed = 0; unsigned long flags; unsigned char *cp; + int current_frame_number; + + /* read frame number here, update pointer in critical section */ + current_frame_number = usb_get_current_frame_number(subs->dev); stride = runtime->frame_bits >> 3; @@ -1171,9 +1179,7 @@ static void retire_capture_urb(struct snd_usb_substream *subs, if (!subs->txfr_quirk) bytes = frames * stride; if (bytes % (runtime->sample_bits >> 3) != 0) { -#ifdef CONFIG_SND_DEBUG_VERBOSE int oldbytes = bytes; -#endif bytes = frames * stride; snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n", oldbytes, bytes); @@ -1190,6 +1196,15 @@ static void retire_capture_urb(struct snd_usb_substream *subs, subs->transfer_done -= runtime->period_size; period_elapsed = 1; } + /* capture delay is by construction limited to one URB, + * reset delays here + */ + runtime->delay = subs->last_delay = 0; + + /* realign last_frame_number */ + subs->last_frame_number = current_frame_number; + subs->last_frame_number &= 0xFF; /* keep 8 LSBs */ + spin_unlock_irqrestore(&subs->lock, flags); /* copy a data chunk */ if (oldptr + bytes > runtime->buffer_size * stride) { |