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| author |   Takashi Iwai <tiwai@suse.de> | 2015-01-23 16:58:30 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-01-28 07:21:52 +0100 |
| commit | 62a109d9e2ce948ee75222bbb92a97669f683875 (patch) | |
| tree | 55760a4a8d5c5b97e4e445f81750e53b9fa3640d /sound/usb | |
| parent | ALSA: line6: Do clipping in volume / monitor manipulations (diff) | |
| download | linux-dev-62a109d9e2ce948ee75222bbb92a97669f683875.tar.xz linux-dev-62a109d9e2ce948ee75222bbb92a97669f683875.zip | |
ALSA: line6: Skip volume manipulation during silence copying
A minor optimization; while pausing, the driver just copies the zero
that doesn't need any volume changes.
Tested-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/line6/playback.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sound/usb/line6/playback.c b/sound/usb/line6/playback.c index cbcd97f5d629..3762a98026aa 100644 --- a/sound/usb/line6/playback.c +++ b/sound/usb/line6/playback.c @@ -234,13 +234,14 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm) line6pcm->out.pos += urb_frames; if (line6pcm->out.pos >= runtime->buffer_size) line6pcm->out.pos -= runtime->buffer_size; + + change_volume(urb_out, line6pcm->volume_playback, + bytes_per_frame); } else { memset(urb_out->transfer_buffer, 0, urb_out->transfer_buffer_length); } - change_volume(urb_out, line6pcm->volume_playback, bytes_per_frame); - if (line6pcm->prev_fbuf != NULL) { if (line6pcm->flags & LINE6_BITS_PCM_IMPULSE) { create_impulse_test_signal(line6pcm, urb_out, |