diff options
| -rw-r--r-- | sound/usb/card.h | 1 | ||||
| -rw-r--r-- | sound/usb/pcm.c | 2 | ||||
| -rw-r--r-- | sound/usb/quirks.c | 1 | ||||
| -rw-r--r-- | sound/usb/stream.c | 1 |
4 files changed, 4 insertions, 1 deletions
diff --git a/sound/usb/card.h b/sound/usb/card.h index 8a751b4887ea..d32ea411545a 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -116,6 +116,7 @@ struct snd_usb_substream { unsigned int altset_idx; /* USB data format: index of alternate setting */ unsigned int txfr_quirk:1; /* allow sub-frame alignment */ unsigned int fmt_type; /* USB audio format type (1-3) */ + unsigned int pkt_offset_adj; /* Bytes to drop from beginning of packets (for non-compliant devices) */ unsigned int running: 1; /* running status */ diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 815a37d2e3e0..9916c85d8cdb 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -1162,7 +1162,7 @@ static void retire_capture_urb(struct snd_usb_substream *subs, stride = runtime->frame_bits >> 3; for (i = 0; i < urb->number_of_packets; i++) { - cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; + cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset + subs->pkt_offset_adj; if (urb->iso_frame_desc[i].status && printk_ratelimit()) { snd_printdd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status); // continue; diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 292798185afc..175fbb7d334a 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -854,6 +854,7 @@ static void set_format_emu_quirk(struct snd_usb_substream *subs, break; } snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id); + subs->pkt_offset_adj = (emu_samplerate_id >= EMU_QUIRK_SR_176400HZ) ? 4 : 0; } void snd_usb_set_format_quirk(struct snd_usb_substream *subs, diff --git a/sound/usb/stream.c b/sound/usb/stream.c index 74beea237801..8951f77a7201 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -93,6 +93,7 @@ static void snd_usb_init_substream(struct snd_usb_stream *as, subs->dev = as->chip->dev; subs->txfr_quirk = as->chip->txfr_quirk; subs->speed = snd_usb_get_speed(subs->dev); + subs->pkt_offset_adj = 0; snd_usb_set_pcm_ops(as->pcm, stream); |